Amino acid sequences found in transported proteins that selectively guide the distribution of the proteins to specific cellular compartments.
Computer-based representation of physical systems and phenomena such as chemical processes.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
The attitude and behavior associated with an individual using the computer.
Various units or machines that operate in combination or in conjunction with a computer but are not physically part of it. Peripheral devices typically display computer data, store data from the computer and return the data to the computer on demand, prepare data for human use, or acquire data from a source and convert it to a form usable by a computer. (Computer Dictionary, 4th ed.)
Familiarity and comfort in using computers efficiently.
Systems composed of a computer or computers, peripheral equipment, such as disks, printers, and terminals, and telecommunications capabilities.
A type of MICROCOMPUTER, sometimes called a personal digital assistant, that is very small and portable and fitting in a hand. They are convenient to use in clinical and other field situations for quick data management. They usually require docking with MICROCOMPUTERS for updates.
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Process of teaching a person to interact and communicate with a computer.
Input/output devices designed to receive data in an environment associated with the job to be performed, and capable of transmitting entries to, and obtaining output from, the system of which it is a part. (Computer Dictionary, 4th ed.)
The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.
Sequential operating programs and data which instruct the functioning of a digital computer.
Computers in which quantities are represented by physical variables; problem parameters are translated into equivalent mechanical or electrical circuits as an analog for the physical phenomenon being investigated. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Application of computer programs designed to assist the physician in solving a diagnostic problem.
Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
A system containing any combination of computers, computer terminals, printers, audio or visual display devices, or telephones interconnected by telecommunications equipment or cables: used to transmit or receive information. (Random House Unabridged Dictionary, 2d ed)
The process of pictorial communication, between human and computers, in which the computer input and output have the form of charts, drawings, or other appropriate pictorial representation.
Short, predominantly basic amino acid sequences identified as nuclear import signals for some proteins. These sequences are believed to interact with specific receptors at the NUCLEAR PORE.
Small computers that lack the speed, memory capacity, and instructional capability of the full-size computer but usually retain its programmable flexibility. They are larger, faster, and more flexible, powerful, and expensive than microcomputers.
Elements of limited time intervals, contributing to particular results or situations.
A self-learning technique, usually online, involving interaction of the student with programmed instructional materials.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
Established cell cultures that have the potential to propagate indefinitely.
Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations.
Integrated set of files, procedures, and equipment for the storage, manipulation, and retrieval of information.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Computers whose input, output and state transitions are carried out by biochemical interactions and reactions.
The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.
Data processing largely performed by automatic means.
Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.
A computer architecture, implementable in either hardware or software, modeled after biological neural networks. Like the biological system in which the processing capability is a result of the interconnection strengths between arrays of nonlinear processing nodes, computerized neural networks, often called perceptrons or multilayer connectionist models, consist of neuron-like units. A homogeneous group of units makes up a layer. These networks are good at pattern recognition. They are adaptive, performing tasks by example, and thus are better for decision-making than are linear learning machines or cluster analysis. They do not require explicit programming.
The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells.
RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
The visual display of data in a man-machine system. An example is when data is called from the computer and transmitted to a CATHODE RAY TUBE DISPLAY or LIQUID CRYSTAL display.
Recombinant proteins produced by the GENETIC TRANSLATION of fused genes formed by the combination of NUCLEIC ACID REGULATORY SEQUENCES of one or more genes with the protein coding sequences of one or more genes.
A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
The rate dynamics in chemical or physical systems.
Proteins which are found in membranes including cellular and intracellular membranes. They consist of two types, peripheral and integral proteins. They include most membrane-associated enzymes, antigenic proteins, transport proteins, and drug, hormone, and lectin receptors.
Text editing and storage functions using computer software.
Computer-based systems for input, storage, display, retrieval, and printing of information contained in a patient's medical record.
Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.
The degree of similarity between sequences of amino acids. This information is useful for the analyzing genetic relatedness of proteins and species.
A form of interactive entertainment in which the player controls electronically generated images that appear on a video display screen. This includes video games played in the home on special machines or home computers, and those played in arcades.
The level of protein structure in which combinations of secondary protein structures (alpha helices, beta sheets, loop regions, and motifs) pack together to form folded shapes called domains. Disulfide bridges between cysteines in two different parts of the polypeptide chain along with other interactions between the chains play a role in the formation and stabilization of tertiary structure. Small proteins usually consist of only one domain but larger proteins may contain a number of domains connected by segments of polypeptide chain which lack regular secondary structure.
Theoretical representations that simulate the behavior or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
The parts of a macromolecule that directly participate in its specific combination with another molecule.
The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.
Computers that combine the functions of analog and digital computers. (Sippl, Computer Dictionary, 4th ed)
A deoxyribonucleotide polymer that is the primary genetic material of all cells. Eukaryotic and prokaryotic organisms normally contain DNA in a double-stranded state, yet several important biological processes transiently involve single-stranded regions. DNA, which consists of a polysugar-phosphate backbone possessing projections of purines (adenine and guanine) and pyrimidines (thymine and cytosine), forms a double helix that is held together by hydrogen bonds between these purines and pyrimidines (adenine to thymine and guanine to cytosine).
Proteins which bind to DNA. The family includes proteins which bind to both double- and single-stranded DNA and also includes specific DNA binding proteins in serum which can be used as markers for malignant diseases.
Proteins found in any species of bacterium.
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.
Protective measures against unauthorized access to or interference with computer operating systems, telecommunications, or data structures, especially the modification, deletion, destruction, or release of data in computers. It includes methods of forestalling interference by computer viruses or so-called computer hackers aiming to compromise stored data.
Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process.
A broad category of carrier proteins that play a role in SIGNAL TRANSDUCTION. They generally contain several modular domains, each of which having its own binding activity, and act by forming complexes with other intracellular-signaling molecules. Signal-transducing adaptor proteins lack enzyme activity, however their activity can be modulated by other signal-transducing enzymes
The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.
Psychophysical technique that permits the estimation of the bias of the observer as well as detectability of the signal (i.e., stimulus) in any sensory modality. (From APA, Thesaurus of Psychological Index Terms, 8th ed.)
Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Within a eukaryotic cell, a membrane-limited body which contains chromosomes and one or more nucleoli (CELL NUCLEOLUS). The nuclear membrane consists of a double unit-type membrane which is perforated by a number of pores; the outermost membrane is continuous with the ENDOPLASMIC RETICULUM. A cell may contain more than one nucleus. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)
The arrangement of two or more amino acid or base sequences from an organism or organisms in such a way as to align areas of the sequences sharing common properties. The degree of relatedness or homology between the sequences is predicted computationally or statistically based on weights assigned to the elements aligned between the sequences. This in turn can serve as a potential indicator of the genetic relatedness between the organisms.
Specific amino acid sequences present in the primary amino acid sequence of proteins which mediate their export from the CELL NUCLEUS. They are rich in hydrophobic residues, such as LEUCINE and ISOLEUCINE.
Computer systems utilized as adjuncts in the treatment of disease.
A basic element found in nearly all organized tissues. It is a member of the alkaline earth family of metals with the atomic symbol Ca, atomic number 20, and atomic weight 40. Calcium is the most abundant mineral in the body and combines with phosphorus to form calcium phosphate in the bones and teeth. It is essential for the normal functioning of nerves and muscles and plays a role in blood coagulation (as factor IV) and in many enzymatic processes.
The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.
The process of moving proteins from one cellular compartment (including extracellular) to another by various sorting and transport mechanisms such as gated transport, protein translocation, and vesicular transport.
Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation.
Proteins prepared by recombinant DNA technology.
The part of CENTRAL NERVOUS SYSTEM that is contained within the skull (CRANIUM). Arising from the NEURAL TUBE, the embryonic brain is comprised of three major parts including PROSENCEPHALON (the forebrain); MESENCEPHALON (the midbrain); and RHOMBENCEPHALON (the hindbrain). The developed brain consists of CEREBRUM; CEREBELLUM; and other structures in the BRAIN STEM.
Surgical procedures conducted with the aid of computers. This is most frequently used in orthopedic and laparoscopic surgery for implant placement and instrument guidance. Image-guided surgery interactively combines prior CT scans or MRI images with real-time video.
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
The science of designing, building or equipping mechanical devices or artificial environments to the anthropometric, physiological, or psychological requirements of the people who will use them.
Harmful and painful condition caused by overuse or overexertion of some part of the musculoskeletal system, often resulting from work-related physical activities. It is characterized by inflammation, pain, or dysfunction of the involved joints, bones, ligaments, and nerves.
Methods of creating machines and devices.
Communication between animals involving the giving off by one individual of some chemical or physical signal, that, on being received by another, influences its behavior.
Theoretical representations that simulate the behavior or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain).
Conversion of an inactive form of an enzyme to one possessing metabolic activity. It includes 1, activation by ions (activators); 2, activation by cofactors (coenzymes); and 3, conversion of an enzyme precursor (proenzyme or zymogen) to an active enzyme.
Use of computers or computer systems for doing routine clerical work, e.g., billing, records pertaining to the administration of the office, etc.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
Signal transduction mechanisms whereby calcium mobilization (from outside the cell or from intracellular storage pools) to the cytoplasm is triggered by external stimuli. Calcium signals are often seen to propagate as waves, oscillations, spikes, sparks, or puffs. The calcium acts as an intracellular messenger by activating calcium-responsive proteins.
A signal transducer and activator of transcription that mediates cellular responses to INTERLEUKIN-6 family members. STAT3 is constitutively activated in a variety of TUMORS and is a major downstream transducer for the CYTOKINE RECEPTOR GP130.
A field of biology concerned with the development of techniques for the collection and manipulation of biological data, and the use of such data to make biological discoveries or predictions. This field encompasses all computational methods and theories for solving biological problems including manipulation of models and datasets.
The part of a cell that contains the CYTOSOL and small structures excluding the CELL NUCLEUS; MITOCHONDRIA; and large VACUOLES. (Glick, Glossary of Biochemistry and Molecular Biology, 1990)
The use of computers for designing and/or manufacturing of anything, including drugs, surgical procedures, orthotics, and prosthetics.
Transport proteins that carry specific substances in the blood or across cell membranes.
Systems where the input data enter the computer directly from the point of origin (usually a terminal or workstation) and/or in which output data are transmitted directly to that terminal point of origin. (Sippl, Computer Dictionary, 4th ed)
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
The deductive study of shape, quantity, and dependence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Devices capable of receiving data, retaining data for an indefinite or finite period of time, and supplying data upon demand.
Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.
Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS.
Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.
Progressive restriction of the developmental potential and increasing specialization of function that leads to the formation of specialized cells, tissues, and organs.
A system in which the functions of the man and the machine are interrelated and necessary for the operation of the system.
Single-stranded complementary DNA synthesized from an RNA template by the action of RNA-dependent DNA polymerase. cDNA (i.e., complementary DNA, not circular DNA, not C-DNA) is used in a variety of molecular cloning experiments as well as serving as a specific hybridization probe.
The phenotypic manifestation of a gene or genes by the processes of GENETIC TRANSCRIPTION and GENETIC TRANSLATION.
Microscopy of specimens stained with fluorescent dye (usually fluorescein isothiocyanate) or of naturally fluorescent materials, which emit light when exposed to ultraviolet or blue light. Immunofluorescence microscopy utilizes antibodies that are labeled with fluorescent dye.
One of the mechanisms by which CELL DEATH occurs (compare with NECROSIS and AUTOPHAGOCYTOSIS). Apoptosis is the mechanism responsible for the physiological deletion of cells and appears to be intrinsically programmed. It is characterized by distinctive morphologic changes in the nucleus and cytoplasm, chromatin cleavage at regularly spaced sites, and the endonucleolytic cleavage of genomic DNA; (DNA FRAGMENTATION); at internucleosomal sites. This mode of cell death serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth.
Any visible result of a procedure which is caused by the procedure itself and not by the entity being analyzed. Common examples include histological structures introduced by tissue processing, radiographic images of structures that are not naturally present in living tissue, and products of chemical reactions that occur during analysis.
Integrated, computer-assisted systems designed to store, manipulate, and retrieve information concerned with the administrative and clinical aspects of providing medical services within the hospital.
Genetically engineered MUTAGENESIS at a specific site in the DNA molecule that introduces a base substitution, or an insertion or deletion.
Any of various enzymatically catalyzed post-translational modifications of PEPTIDES or PROTEINS in the cell of origin. These modifications include carboxylation; HYDROXYLATION; ACETYLATION; PHOSPHORYLATION; METHYLATION; GLYCOSYLATION; ubiquitination; oxidation; proteolysis; and crosslinking and result in changes in molecular weight and electrophoretic motility.
Equipment that provides mentally or physically disabled persons with a means of communication. The aids include display boards, typewriters, cathode ray tubes, computers, and speech synthesizers. The output of such aids includes written words, artificial speech, language signs, Morse code, and pictures.
Methods developed to aid in the interpretation of ultrasound, radiographic images, etc., for diagnosis of disease.
Identification of proteins or peptides that have been electrophoretically separated by blot transferring from the electrophoresis gel to strips of nitrocellulose paper, followed by labeling with antibody probes.
The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior.
DNA sequences which are recognized (directly or indirectly) and bound by a DNA-dependent RNA polymerase during the initiation of transcription. Highly conserved sequences within the promoter include the Pribnow box in bacteria and the TATA BOX in eukaryotes.
Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.
A molecule that binds to another molecule, used especially to refer to a small molecule that binds specifically to a larger molecule, e.g., an antigen binding to an antibody, a hormone or neurotransmitter binding to a receptor, or a substrate or allosteric effector binding to an enzyme. Ligands are also molecules that donate or accept a pair of electrons to form a coordinate covalent bond with the central metal atom of a coordination complex. (From Dorland, 27th ed)
The spatial arrangement of the atoms of a nucleic acid or polynucleotide that results in its characteristic 3-dimensional shape.
Instrumentation consisting of hardware and software that communicates with the BRAIN. The hardware component of the interface records brain signals, while the software component analyzes the signals and converts them into a command that controls a device or sends a feedback signal to the brain.
Extensive collections, reputedly complete, of facts and data garnered from material of a specialized subject area and made available for analysis and application. The collection can be automated by various contemporary methods for retrieval. The concept should be differentiated from DATABASES, BIBLIOGRAPHIC which is restricted to collections of bibliographic references.
The movement of materials (including biochemical substances and drugs) through a biological system at the cellular level. The transport can be across cell membranes and epithelial layers. It also can occur within intracellular compartments and extracellular compartments.
The transmission and reproduction of transient images of fixed or moving objects. An electronic system of transmitting such images together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound. (From Webster, 3rd ed)
CELL LINES derived from the CV-1 cell line by transformation with a replication origin defective mutant of SV40 VIRUS, which codes for wild type large T antigen (ANTIGENS, POLYOMAVIRUS TRANSFORMING). They are used for transfection and cloning. (The CV-1 cell line was derived from the kidney of an adult male African green monkey (CERCOPITHECUS AETHIOPS).)
Materials, frequently computer applications, that combine some or all of text, sound, graphics, animation, and video into integrated packages. (Thesaurus of ERIC Descriptors, 1994)
Protein analogs and derivatives of the Aequorea victoria green fluorescent protein that emit light (FLUORESCENCE) when excited with ULTRAVIOLET RAYS. They are used in REPORTER GENES in doing GENETIC TECHNIQUES. Numerous mutants have been made to emit other colors or be sensitive to pH.
A non-essential amino acid. In animals it is synthesized from PHENYLALANINE. It is also the precursor of EPINEPHRINE; THYROID HORMONES; and melanin.
The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.
The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.
Cell surface proteins that bind signalling molecules external to the cell with high affinity and convert this extracellular event into one or more intracellular signals that alter the behavior of the target cell (From Alberts, Molecular Biology of the Cell, 2nd ed, pp693-5). Cell surface receptors, unlike enzymes, do not chemically alter their ligands.
A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.
Spectroscopic method of measuring the magnetic moment of elementary particles such as atomic nuclei, protons or electrons. It is employed in clinical applications such as NMR Tomography (MAGNETIC RESONANCE IMAGING).
Improvement of the quality of a picture by various techniques, including computer processing, digital filtering, echocardiographic techniques, light and ultrastructural MICROSCOPY, fluorescence spectrometry and microscopy, scintigraphy, and in vitro image processing at the molecular level.
Statistical formulations or analyses which, when applied to data and found to fit the data, are then used to verify the assumptions and parameters used in the analysis. Examples of statistical models are the linear model, binomial model, polynomial model, two-parameter model, etc.
Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
Strains of mice in which certain GENES of their GENOMES have been disrupted, or "knocked-out". To produce knockouts, using RECOMBINANT DNA technology, the normal DNA sequence of the gene being studied is altered to prevent synthesis of a normal gene product. Cloned cells in which this DNA alteration is successful are then injected into mouse EMBRYOS to produce chimeric mice. The chimeric mice are then bred to yield a strain in which all the cells of the mouse contain the disrupted gene. Knockout mice are used as EXPERIMENTAL ANIMAL MODELS for diseases (DISEASE MODELS, ANIMAL) and to clarify the functions of the genes.
Specifications and instructions applied to the software.
A technique applicable to the wide variety of substances which exhibit paramagnetism because of the magnetic moments of unpaired electrons. The spectra are useful for detection and identification, for determination of electron structure, for study of interactions between molecules, and for measurement of nuclear spins and moments. (From McGraw-Hill Encyclopedia of Science and Technology, 7th edition) Electron nuclear double resonance (ENDOR) spectroscopy is a variant of the technique which can give enhanced resolution. Electron spin resonance analysis can now be used in vivo, including imaging applications such as MAGNETIC RESONANCE IMAGING.
A superfamily of PROTEIN-SERINE-THREONINE KINASES that are activated by diverse stimuli via protein kinase cascades. They are the final components of the cascades, activated by phosphorylation by MITOGEN-ACTIVATED PROTEIN KINASE KINASES, which in turn are activated by mitogen-activated protein kinase kinase kinases (MAP KINASE KINASE KINASES).
In statistics, a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer. The name alludes to the randomness characteristic of the games of chance played at the gambling casinos in Monte Carlo. (From Random House Unabridged Dictionary, 2d ed, 1993)
That portion of the electromagnetic spectrum in the visible, ultraviolet, and infrared range.
The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups.
Predetermined sets of questions used to collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.
Controlled operation of an apparatus, process, or system by mechanical or electronic devices that take the place of human organs of observation, effort, and decision. (From Webster's Collegiate Dictionary, 1993)
A group of enzymes that catalyzes the phosphorylation of serine or threonine residues in proteins, with ATP or other nucleotides as phosphate donors.
The storing or preserving of video signals for television to be played back later via a transmitter or receiver. Recordings may be made on magnetic tape or discs (VIDEODISC RECORDING).
Automated systems applied to the patient care process including diagnosis, therapy, and systems of communicating medical data within the health care setting.
A technique that localizes specific nucleic acid sequences within intact chromosomes, eukaryotic cells, or bacterial cells through the use of specific nucleic acid-labeled probes.
The field of information science concerned with the analysis and dissemination of medical data through the application of computers to various aspects of health care and medicine.
Commonly observed structural components of proteins formed by simple combinations of adjacent secondary structures. A commonly observed structure may be composed of a CONSERVED SEQUENCE which can be represented by a CONSENSUS SEQUENCE.
Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)
The first continuously cultured human malignant CELL LINE, derived from the cervical carcinoma of Henrietta Lacks. These cells are used for VIRUS CULTIVATION and antitumor drug screening assays.
Information systems, usually computer-assisted, designed to store, manipulate, and retrieve information for planning, organizing, directing, and controlling administrative activities associated with the provision and utilization of ambulatory care services and facilities.
Organized activities related to the storage, location, search, and retrieval of information.
The time from the onset of a stimulus until a response is observed.
A mechanism of communication within a system in that the input signal generates an output response which returns to influence the continued activity or productivity of that system.
Diseases of the muscles and their associated ligaments and other connective tissue and of the bones and cartilage viewed collectively.
Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.
Cells grown in vitro from neoplastic tissue. If they can be established as a TUMOR CELL LINE, they can be propagated in cell culture indefinitely.
The relationships of groups of organisms as reflected by their genetic makeup.
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
A system of cisternae in the CYTOPLASM of many cells. In places the endoplasmic reticulum is continuous with the plasma membrane (CELL MEMBRANE) or outer membrane of the nuclear envelope. If the outer surfaces of the endoplasmic reticulum membranes are coated with ribosomes, the endoplasmic reticulum is said to be rough-surfaced (ENDOPLASMIC RETICULUM, ROUGH); otherwise it is said to be smooth-surfaced (ENDOPLASMIC RETICULUM, SMOOTH). (King & Stansfield, A Dictionary of Genetics, 4th ed)
The sequential correspondence of nucleotides in one nucleic acid molecule with those of another nucleic acid molecule. Sequence homology is an indication of the genetic relatedness of different organisms and gene function.
A variation of the PCR technique in which cDNA is made from RNA via reverse transcription. The resultant cDNA is then amplified using standard PCR protocols.
A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement.
Glycoproteins found on the membrane or surface of cells.
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in bacteria.
Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.
Gated transport mechanisms by which proteins or RNA are moved across the NUCLEAR MEMBRANE.
The biosynthesis of PEPTIDES and PROTEINS on RIBOSOMES, directed by MESSENGER RNA, via TRANSFER RNA that is charged with standard proteinogenic AMINO ACIDS.
A cell line derived from cultured tumor cells.
Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are proteins conjugated with nucleic acids, that are not necessarily present in the nucleus.
A light microscopic technique in which only a small spot is illuminated and observed at a time. An image is constructed through point-by-point scanning of the field in this manner. Light sources may be conventional or laser, and fluorescence or transmitted observations are possible.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
In vitro method for producing large amounts of specific DNA or RNA fragments of defined length and sequence from small amounts of short oligonucleotide flanking sequences (primers). The essential steps include thermal denaturation of the double-stranded target molecules, annealing of the primers to their complementary sequences, and extension of the annealed primers by enzymatic synthesis with DNA polymerase. The reaction is efficient, specific, and extremely sensitive. Uses for the reaction include disease diagnosis, detection of difficult-to-isolate pathogens, mutation analysis, genetic testing, DNA sequencing, and analyzing evolutionary relationships.
Proteins obtained from ESCHERICHIA COLI.
Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain.
Laboratory mice that have been produced from a genetically manipulated EGG or EMBRYO, MAMMALIAN.
A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments in classical plant genetics as well as molecular genetic studies in plant physiology, biochemistry, and development.
A series of steps taken in order to conduct research.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Recording of pertinent information concerning patient's illness or illnesses.
The properties, processes, and behavior of biological systems under the action of mechanical forces.
Application of statistical procedures to analyze specific observed or assumed facts from a particular study.
The determination of the pattern of genes expressed at the level of GENETIC TRANSCRIPTION, under specific circumstances or in a specific cell.
Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen.
The relationship between the dose of an administered drug and the response of the organism to the drug.
The restriction of a characteristic behavior, anatomical structure or physical system, such as immune response; metabolic response, or gene or gene variant to the members of one species. It refers to that property which differentiates one species from another but it is also used for phylogenetic levels higher or lower than the species.
Histochemical localization of immunoreactive substances using labeled antibodies as reagents.
Proteins and peptides that are involved in SIGNAL TRANSDUCTION within the cell. Included here are peptides and proteins that regulate the activity of TRANSCRIPTION FACTORS and cellular processes in response to signals from CELL SURFACE RECEPTORS. Intracellular signaling peptide and proteins may be part of an enzymatic signaling cascade or act through binding to and modifying the action of other signaling factors.
The study, control, and application of the conduction of ELECTRICITY through gases or vacuum, or through semiconducting or conducting materials. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Proteins found in plants (flowers, herbs, shrubs, trees, etc.). The concept does not include proteins found in vegetables for which VEGETABLE PROTEINS is available.
Any method used for determining the location of and relative distances between genes on a chromosome.
Computer-assisted analysis and processing of problems in a particular area.
A polynucleotide consisting essentially of chains with a repeating backbone of phosphate and ribose units to which nitrogenous bases are attached. RNA is unique among biological macromolecules in that it can encode genetic information, serve as an abundant structural component of cells, and also possesses catalytic activity. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
In INFORMATION RETRIEVAL, machine-sensing or identification of visible patterns (shapes, forms, and configurations). (Harrod's Librarians' Glossary, 7th ed)

Phase reversal of biomechanical functions and muscle activity in backward pedaling. (1/3966)

Computer simulations of pedaling have shown that a wide range of pedaling tasks can be performed if each limb has the capability of executing six biomechanical functions, which are arranged into three pairs of alternating antagonistic functions. An Ext/Flex pair accelerates the limb into extension or flexion, a Plant/Dorsi pair accelerates the foot into plantarflexion or dorsiflexion, and an Ant/Post pair accelerates the foot anteriorly or posteriorly relative to the pelvis. Because each biomechanical function (i.e., Ext, Flex, Plant, Dorsi, Ant, or Post) contributes to crank propulsion during a specific region in the cycle, phasing of a muscle is hypothesized to be a consequence of its ability to contribute to one or more of the biomechanical functions. Analysis of electromyogram (EMG) patterns has shown that this biomechanical framework assists in the interpretation of muscle activity in healthy and hemiparetic subjects during forward pedaling. Simulations show that backward pedaling can be produced with a phase shift of 180 degrees in the Ant/Post pair. No phase shifts in the Ext/Flex and Plant/Dorsi pairs are then necessary. To further test whether this simple yet biomechanically viable strategy may be used by the nervous system, EMGs from 7 muscles in 16 subjects were measured during backward as well as forward pedaling. As predicted, phasing in vastus medialis (VM), tibialis anterior (TA), medial gastrocnemius (MG), and soleus (SL) were unaffected by pedaling direction, with VM and SL contributing to Ext, MG to Plant, and TA to Dorsi. In contrast, phasing in biceps femoris (BF) and semimembranosus (SM) were affected by pedaling direction, as predicted, compatible with their contribution to the directionally sensitive Post function. Phasing of rectus femoris (RF) was also affected by pedaling direction; however, its ability to contribute to the directionally sensitive Ant function may only be expressed in forward pedaling. RF also contributed significantly to the directionally insensitive Ext function in both forward and backward pedaling. Other muscles also appear to have contributed to more than one function, which was especially evident in backward pedaling (i.e. , BF, SM, MG, and TA to Flex). We conclude that the phasing of only the Ant and Post biomechanical functions are directionally sensitive. Further, we suggest that task-dependent modulation of the expression of the functions in the motor output provides this biomechanics-based neural control scheme with the capability to execute a variety of lower limb tasks, including walking.  (+info)

Varying the degree of single-whisker stimulation differentially affects phases of intrinsic signals in rat barrel cortex. (2/3966)

Using intrinsic signal optical imaging (ISI), we have shown previously that the point spread of evoked activity in the rat barrel cortex in response to single-whisker stimulation encompasses a surprisingly large area. Given that our typical stimulation consists of five deflections at 5 Hz, the large area of evoked activity might have resulted from repetitive stimulation. Thus in the present study, we use ISI through the thinned skull to determine whether decreasing the degree of single-whisker stimulation decreases the area of the cortical point spread. We additionally outline a protocol to quantify stimulus-related differences in the temporal characteristics of intrinsic signals at a fine spatial scale. In 10 adult rats, whisker C2 was stimulated randomly with either one or five deflections delivered in a rostral-to-caudal fashion. Each deflection consisted of a 0.5-mm displacement of the whisker as measured at the point of contact, 15 mm from the snout. The number of whisker deflections did not affect the area or peak magnitude of the cortical point spread based on the intrinsic signal activity occurring from 0.5 up to 1.5 s poststimulus onset. In contrast, the magnitude and time course of intrinsic signal activity collected after 1.5-s poststimulus onset did reflect the difference in the degree of stimulation. Thus decreasing the degree of stimulation differentially affected the early and late phases of the evoked intrinsic signal response. The implications of the present results are discussed in respect to probable differences in the signal source underlying the early versus later phases of evoked intrinsic signals.  (+info)

A new filtering algorithm for medical magnetic resonance and computer tomography images. (3/3966)

Inner views of tubular structures based on computer tomography (CT) and magnetic resonance (MR) data sets may be created by virtual endoscopy. After a preliminary segmentation procedure for selecting the organ to be represented, the virtual endoscopy is a new postprocessing technique using surface or volume rendering of the data sets. In the case of surface rendering, the segmentation is based on a grey level thresholding technique. To avoid artifacts owing to the noise created in the imaging process, and to restore spurious resolution degradations, a robust Wiener filter was applied. This filter working in Fourier space approximates the noise spectrum by a simple function that is proportional to the square root of the signal amplitude. Thus, only points with tiny amplitudes consisting mostly of noise are suppressed. Further artifacts are avoided by the correct selection of the threshold range. Afterwards, the lumen and the inner walls of the tubular structures are well represented and allow one to distinguish between harmless fluctuations and medically significant structures.  (+info)

Image processing strategies in picture archiving and communication systems. (4/3966)

An image processing strategy is presented that assures very similar soft-copy presentation on diagnostic workstations of a picture archiving and communication system (PACS) over the lifetime of an image file and simultaneously provides efficient work-flow. The strategy is based on rigid partitioning of image processing into application- and display-device-specific processing. Application-specific processing is optimized for a reference display system. A description of this system is attached to the file header of the application-specifically processed image which is stored in the PACS. Every diagnostic display system automatically reproduces the image quality for which the application-specific processing was optimized by adjusting its properties by display-system-specific processing so that the system becomes effectively equal to the reference display system.  (+info)

A new tool for measuring the suckling stimulus during breastfeeding in humans: the orokinetogram and the Fourier series. (5/3966)

The Fourier series was used to analyse the oral movements recorded by the orokinetogram during breastfeeding in human babies. This is a new method that allows recording of oral movements without introducing any extrinsic element between the nipple and the mouth of the baby. The advantage of displaying suckling activity after fast Fourier transform (FFT) is that this algorithm allows storage, quantification and frequency analysis of the oral movements throughout a suckling bout, which enables the total oral activity to be measured. Two types of oral movements are found: slow high amplitude (SHA) and fast low amplitude (FLA). FLA movements may be derived from peristaltic movements of the tongue that result in tickling stimuli to the mechanoreceptors of the nipple and milk expression. The frequency bandwidth of oral movements is wider (0-8 Hz) than has been described previously (0-3 Hz) and this is due to the presence of the FLA oral movements. An indirect measurement of the energy of oral movements during suckling is obtained by the pattern of energy distribution used in each individual frequency band by oral movements. This pattern changes in relation to the periods of continuous and intermittent suckling activity. SHA and FLA oral movements are more intense during continuous suckling. Statistical analysis showed a correlation between the energy of SHA and FLA waves throughout the suckling bout, and also that the highest level of energy during suckling activity is displayed during the first 2 min. The novel tools described in this paper allow investigation of the role of suckling stimulus in reflex hormone release and other mother-infant interactions.  (+info)

Ryanodine and the left ventricular force-interval and relaxation-interval relations in closed-chest dogs: insights on calcium handling. (6/3966)

OBJECTIVE: Although the myocardial force-interval and relaxation-interval relations are considered to be mechanical expressions of myocardial Ca2+ handling, correlation of these phenomena with altered Ca2+ kinetics in the intact state is limited. Thus, I sought to determine the impact of selective impairment of physiologic sarcoplasmic reticulum Ca2+ release, achieved by the use of the drug ryanodine, on these relations in the intact animal. METHODS: Twelve dogs instrumented with left ventricular manometers and piezoelectric dimension crystals were studied before and after ryanodine (4 micrograms/kg intravenously). End-systolic elastance was measured at paced heart rates of 120-180 bpm to determine the force-frequency response. Mechanical restitution and relaxation restitution were determined by measuring contractile (single beat elastance) and relaxation (peak negative dP/dt) responses for beats delivered at graded extrasystolic intervals, with normalized responses expressed as a function of extrasystolic interval. RESULTS: Ryanodine accelerated mechanical restitution (time constant 60.3 +/- 3.9 versus 81.7 +/- 10.1 ms, p < 0.05) and reduced maximal contractile response (107.5 +/- 2.1 versus 122.1 +/- 5.7%, p < 0.05), slowed early relaxation restitution (time constant 65.5 +/- 13.8 versus 36.8 +/- 3.8 ms, p < 0.05) without changing late relaxation restitution kinetics, and amplified the force-frequency response (end-systolic elastance, 180 bpm, 19.4 +/- 4.3 versus 11.4 +/- 1.2 mm Hg/ml, p < 0.05). CONCLUSIONS: These findings suggest that in the intact animal, Ca2+ handling by the sarcoplasmic reticulum is a primary determinant of mechanical restitution and early relaxation restitution, but not late relaxation restitution. Conversely, ryanodine induced augmentation of the force-frequency response indicates a central role for sarcolemmal Ca2+ influx in producing frequency potentiation.  (+info)

Delayed rectifier potassium current in undiseased human ventricular myocytes. (7/3966)

OBJECTIVE: The purpose of the study was to investigate the properties of the delayed rectifier potassium current (IK) in myocytes isolated from undiseased human left ventricles. METHODS: The whole-cell configuration of the patch-clamp technique was applied in 28 left ventricular myocytes from 13 hearts at 35 degrees C. RESULTS: An E-4031 sensitive tail current identified the rapid component of IK (IKr) in the myocytes, but there was no evidence for an E-4031 insensitive slow component of IK (IKs). When nifedipine (5 microM) was used to block the inward calcium current (ICa), IKr activation was fast (tau = 31.0 +/- 7.4 ms, at +30 mV, n = 5) and deactivation kinetics were biexponential and relatively slow (tau 1 = 600.0 +/- 53.9 ms and tau 2 = 6792.2 +/- 875.7 ms, at -40 mV, n = 7). Application of CdCl2 (250 microM) to block ICa altered the voltage dependence of the IKr considerably, slowing its activation (tau = 657.1 +/- 109.1 ms, at +30 mV, n = 5) and accelerating its deactivation (tau = 104.0 +/- 18.5 ms, at -40 mV, n = 8). CONCLUSIONS: In undiseased human ventricle at 35 degrees C IKr exists having fast activation and slow deactivation kinetics; however, there was no evidence found for an expressed IKs. IKr probably plays an important role in the frequency dependent modulation of repolarization in undiseased human ventricle, and is a target for many Class III antiarrhythmic drugs.  (+info)

Neurocardiac and cerebral responses evoked by esophageal vago-afferent stimulation in humans: effect of varying intensities. (8/3966)

OBJECTIVE: This study was designed to determine whether esophageal vago-afferent electrostimulation, over a wide range of stimulus intensities, can sustain a cardiac vago-efferent effect by way of central nervous system processing. METHODS: Studies were performed in ten healthy male subjects (23.9 +/- 6.3 years). Esophageal electrostimulation was carried out using a stimulating electrode placed in the distal esophagus. Stimulation of esophageal vago-afferent fibres was employed using electrical impulses (200 microseconds at 0.2 Hz x 128 s) varying from 2.7 to 20 mA. Respiratory frequencies, beat-to-beat heart rate autospectra and cerebral evoked potentials were recorded at baseline and at each stimulus intensity in random order. RESULTS: With esophageal electrical stimulation, we observed a small non-significant decrease in heart rate. There was a dramatic shift of the instantaneous heart rate power spectra towards enhanced cardiac vagal modulation with intensities as low as 5 mA. This effect was sustained throughout all intensities with no further change in either the low frequency or high frequency power. Conversely, there was a linear dose response relationship between cerebral evoked potential amplitude and stimulus intensity mainly occurring above perception threshold (10 mA). Esophageal stimulation had no significant effect on heart rate or respiratory frequency at any stimulus intensity. CONCLUSIONS: These results indicate that electrical stimulation of the distal esophagus across a wide range of current intensities elicits a reproducible shift in the heart rate power spectrum towards enhanced vagal modulation. The data suggest a closed loop afferent/efferent circuitry wherein tonic visceral afferent impulses appear to elicit a phasic or modulatory vago-efferent cardiac response in healthy subjects.  (+info)

TY - JOUR. T1 - Blind source separation methods for deconvolution of complex signals in cancer biology. AU - Zinovyev, Andrei. AU - Kairov, Ulykbek. AU - Karpenyuk, Tatyana. AU - Ramanculov, Erlan. PY - 2013/1/18. Y1 - 2013/1/18. N2 - Two blind source separation methods (Independent Component Analysis and Non-negative Matrix Factorization), developed initially for signal processing in engineering, found recently a number of applications in analysis of large-scale data in molecular biology. In this short review, we present the common idea behind these methods, describe ways of implementing and applying them and point out to the advantages compared to more traditional statistical approaches. We focus more specifically on the analysis of gene expression in cancer. The review is finalized by listing available software implementations for the methods described.. AB - Two blind source separation methods (Independent Component Analysis and Non-negative Matrix Factorization), developed initially for ...
We address the problem of blind source separation of non-stationary signals of which only instantaneous linear mixtures are observed. A blind source separation approach exploiting both auto-terms and cross-terms of the time-frequency (TF) distributions of the sources is considered. The approach is b.... Full description. ...
With blind source separation (BSS) one can separate microstructure tissue components from the diffusion MRI signal, characterize the volume fractions, and T2 maps of these compartments. Scanning a typical diffusion protocol for two echo times and feeding these data into this BSS algorithm corrects the diffusion signal for CSF contamination, generates FLAIR equivalent T2 maps of tissue, and CSF and tissue volume fraction maps. It is necessary that used diffusion protocol includes at least one non-diffusion-weighted volume, and the difference between echo times is 70 ms. Due to hardware restriction in clinical MR scanners this is only possible up to two tissue components.. This method does not model the compartmental diffusion behavior. It replaces the ILTs by a blind source separation (BSS) technique, reducing the minimum number of distinct echo times required to the number of compartments in the tissue, less than for regularized inverse Laplace transforms (ILTs) based methods. Other than the ...
Over the last few years, the development of multi-channel sensors motivated interest in methods for the coherent processing of multivariate data. Some specific issues have already been addressed as testified by the wide literature on the so-called blind source separation (BSS) problem. In this context, as clearly emphasized by previous work, it is fundamental that the sources to be retrieved present some quantitatively measurable diversity. Recently, sparsity and morphological diversity have emerged as a novel and effective source of diversity for BSS. We give here some essential insights into the use of sparsity in source separation and we outline the essential role of morphological diversity as being a source of diversity or contrast between the sources. This paper overviews a sparsity-based BSS method coined Generalized Morphological Component Analysis (GMCA) that takes advantages of both morphological diversity and sparsity, using recent sparse overcomplete or redundant signal representations. GMCA
A method and apparatus for the application of Blind Source Separation (BSS), specifically independent Component Analysis (ICA) to mixture signals obtained by a pulse oximeter sensor. In pulse oximetry, the signals measured at different wavelengths represent the mixture signals, while the plethysmographic signal, motion artifact, respiratory artifact and instrumental noise represent the source components. The BSS is carried out by a two-step method including an ICA. In the first step, the method uses Principal Component Analysis (PCA) as a preprocessing step, and the Principal Components are then used to derive sat and the Independent Components, where the Independent Components are determined in a second step. In one embodiment, the independent components are obtained by high-order decorrelation of the principal components, achieved by maximizing the sum of the squares of the higher-order cumulants of the plurality of mixture signals.
Field programmable gate arrays (FPGAs) represent the currently the most popular and also the newest media for designing application specific integrated digital circuits. They contain an array of a large number of programmable sequential and combinational logic elements (called gates, logic blocks or look up tables). The array of such logic blocks, literally a sea of them, is distributed across a digital chip through interconnections that are programmable. This array is surrounded by a programmable input/output blocks ...
In this paper, we introduce a simple and effective scheme to achieve joint blind source separation (BSS) of multiple datasets using multiset canonical corr
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract-This paper deals with distributed demodulation of space-time transmissions of a common message from a multiantenna access point (AP) to a wireless sensor network. Based on local message exchanges with single-hop neighboring sensors, two algorithms are developed for distributed demodulation. In the first algorithm, sensors consent on the estimated symbols. By relaxing the finite-alphabet constraints on the symbols, the demodulation task is formulated as a distributed convex optimization problem that is solved iteratively using the method of multipliers. Distributed versions of the centralized zero-forcing (ZF) and minimum mean-square error (MMSE) demodulators follow as special cases. In the second algorithm, sensors iteratively reach consensus on the average (cross-) covariances of locally available per-sensor data vectors with the corresponding AP-tosensor channel matrices, which constitute sufficient statistics for
TY - JOUR. T1 - Linear multivariate models for physiological signal analysis. T2 - Applications. AU - Korhonen, Ilkka. AU - Mainardi, Luca. AU - Baselli, Guiseppe. AU - Bianchi, Anna. AU - Loula, Pekka. AU - Garrault, Guy. N1 - Project code: TTE3312. PY - 1996. Y1 - 1996. N2 - Some applications of linear multivariate modelling methods in the analysis of physiological signals are presented. These applications illustrate the methods in the analysis of cardiovascular dynamics, which has been one of the main application fields of the multivariate modelling during the last ten years. It is demonstrated that physiologically meaningful information about the causal interactions in the cardiovascular system can be drawn from the routinely available clinical signals. Both static and dynamic conditions are considered.. AB - Some applications of linear multivariate modelling methods in the analysis of physiological signals are presented. These applications illustrate the methods in the analysis of ...
A novel optical frequency-domain imaging system is demonstrated that employs a passive optical demodulation circuit and a chirped digital acquisition clock derived from a voltage-controlled oscillator. The demodulation circuit allows the separation of signals from positive and negative depths to better than 50 dB, thereby eliminating depth degeneracy and doubling the imaging depth range. Our system design is compatible with dual-balanced and polarization-diverse detection, important techniques in the practical biomedical application of optical frequency-domain imaging.. © 2006 Optical Society of America. Full Article , PDF Article ...
Glass Bottles and Jars - In the 1993 Plan Amendment, this material was referred to as Glass Containers, and the intent was that meant Glass Bottles and Jars. The phrase Bottles and Jars has been added to clarify the intent. For example, drinking glasses and Pyrex® containers are not included in this material. Otherwise, there is no change to the source separation requirement for Glass Bottles and Jars. It continues to be mandatory for all generators to source separate and recycle this material. Steel Cans - In the 1993 Plan Amendment, this material was referred to as Ferrous Containers. It is now felt that a more recognizable term to describe this material is Steel Cans. Otherwise, there is no change to the source separation requirement for Steel Cans. It continues to be mandatory for all generators to source separate and recycle this material. Leaves - In the 1993 Plan Amendment, this material was referred to as Yard Waste. Leaves has been included as a separate item, in lieu of the ...
A variable attenuation signal acquisition probing system and voltage measurement system uses an optical cavity to acquire a signal under test. The probing system has an optical transmitter and receiver that are coupled to the optical cavity via an optical transmission system. The optical cavity has an electrode structure having apertures formed in the optical cavity that are parallel to propagation path of the optical signal within the cavity. A modulated optical signal is generated by the optical cavity in response to the signal under test creating an electromagnetic field distribution in electro-optic material in the optical cavity that overlaps the optical path of the optical signal propagating in the optical cavity which varies the index of refraction of electro-optic material in the optical path. Changes in the polarization state of the optical signal attenuates the magnitude of the output electrical signal of the optical receiver.
Signal Analysis Shareware and Freeware Programs - Digital Signal Analysis (, Blue Cats Digital Peak Meter Pro x64 (Blue Cat Audio), Blue Cats Digital Peak Meter Pro for Mac OS X (Blue Cat Audio) ...
Bibliographic details on The Removal of EOG Artifacts From EEG Signals Using Independent Component Analysis and Multivariate Empirical Mode Decomposition.
The present invention relates to blind source separation. More specifically certain embodiments relate to the blind source separation using frequency domain processes. Aspects of the invention relate to methods and systems for receiving a set of frequency-domain first signals, and then separating the set of frequency-domain first signals into a set of frequency-domain second signals. The frequency-domain second signals may have a set of separated frequency-domain second signal elements corresponding to individual frequencies wherein each frequency-domain second signal element is assigned an identifier. The identifier may indicate which of the set of frequency-domain second signals includes the frequency-domain second signal element. Some aspects also include reordering the identifiers corresponding to at least one frequency to improve coherence of the frequency-domain second signals and to produce a set of frequency-domain third signals.
Tektronix Introduces RSA7100A Wideband Signal Analysis Solution Ideal for Radar/EW Design and Spectrum Management, New Solutions Combines 800 MHz Real-Time Bandwidth with 2-hours of Streaming Storage _____ BEAVERTON, Ore., Nov 29, 2016 - Tektronix, Inc., a leading worldwide provider of test, measurement and monitoring instrumentation, today announced the RSA7100A wideband signal analysis solution that combines 800 MHz of real-time bandwidth with up to 2 hours of streaming storage at full bandwidth in one solution. The new instruments 16 kHz to 26.5 GHz frequency range covers . . .
This seminar is organized by Drs. Cao and Lou. If you have questions about this seminar please contact Dr. Yan Cao. The members include both graduate and undergraduate students. Each week one of the students presents a paper in the field of image and signal analysis of his/her interest. The chosen paper will be announced prior to the meeting. The goal of the journal club is to introduce graduate and undergraduate students to image and signal analysis research and create an open venue for friendly but lively scientific discussion.. In Spring 2020, the journal club meets on Tuesdays at 12-12:50pm in CB3 1.314.. In Fall 2019, the journal club meets on Thursdays at 10-10:50am in GR4.208.. Fall 2018-Spring 2019 Archive. Fall 2017 - Spring 2018 Archive. Fall 2016 - Spring 2017 Archive. ...
I have been involved in a major project on contrast enhancement of Magnetic Resonance Images by using Independent Component Analysis (ICA) and Support Vector Machines (SVM) for the past couple of months. It is an extremely exciting project and also something new for me, as I have worked on bio-medical images just once before. In…
A field programmable gate array has a plurality of programmable resources addressable per respective x and y dimensions of an x,y two dimensional array. A memory device provides a plurality of memory units that store configuration data for configuring associated programmable resources of the field programmable gate array. A controller addresses the memory device with an N-bit address for retrieving given configuration data. An address decoder and sequencer divides the N-bit address into first, second, and third portions and employs the first and third portions interchangeably, in accordance with the second portion, for addressing respective x and y dimensions of the plurality of programmable resources for selecting an associated programmable resource to be configured in accordance with the retrieved configuration data.
Electroencephalographic (EEG) oscillations predominantly appear with periods between 1 s (1 Hz) and 20 ms (50 Hz), and are subdivided into distinct frequency bands which appear to correspond to distin
© Institute of Mathematical Statistics, 2018. We provide a new methodology for statistical recovery of single linear mixtures of piecewise constant signals (sources) with unknown mixing weights and change points in a multiscale fashion. We show exact recovery within an ε-neighborhood of the mixture when the sources take only values in a known finite alphabet. Based on this we provide the SLAM (Separates Linear Alphabet Mixtures) estimators for the mixing weights and sources. For Gaussian error, we obtain uniform confidence sets and optimal rates (up to log-factors) for all quantities. SLAM is efficiently computed as a nonconvex optimization problem by a dynamic program tailored to the finite alphabet assumption. Its performance is investigated in a simulation study. Finally, it is applied to assign copy-number aberrations from genetic sequencing data to different clones and to estimate their proportions.
In this short article, we limit our discussions to algorithms that separate multiple sources or extract information from a linear mix of multiple sources with no training data and no prior knowledge of the signal parameters with or without multiple reception sensors.
In this paper, we investigate the self-adaptive source separation problem for convolutively mixed signals. The proposed approach uses a recurrent structure
Hello! My name is Hugo Flores Garcia. I have been selected to build source separation and other music information retrieval (MIR) tools for Audacity, as a project for Google Summer of Code. My mentor is Dmitry Vedenko from Audacitys new development team, with Roger from the old team providing assis
Embedded control of process plants is the state-of-the art development gaining importance by research community. Field Programmable Gate Array (FPGA) is a versatile tool for implementing embedded controller. In this paper the process of interfacing the Shell and Tube Heat Exchanger (STHE) with Compact Reconfigurable Input Output (CRIO) based FPGA through VDPID03DAQ card has been presented. The STHE VTPA-H-353 is a versatile and reliable computer based temperature process having microcontroller based data acquisition hardware unit. The DAQ card used for data acquisition consists of analog to digital converter, digital to analog converter and a microcontroller on a single board. A graphical program has been developed for the real time data acquisition using CRIO based FPGA. CRIO-9012 was interfaced with RS232 to the data acquisition card of STHE process plant. FPGA acts as a standalone processor instead of the PC for controlling the process plant.. ...
Disclosed is a demodulation apparatus for receiving signals by an adaptive modulation and coding method, and demodulating the signals, in an OFDMA based packet communication system, comprising: a QAM
Epilepsy is a serious neurological disorder which disturbs the common activities of a human brain. It is detected with the help of electroencephalogram (EEG) recording of the brain as it covers detailed information related to the different physiological states of the brain. A novel method based on empirical mode decomposition (EMD) with amplitude and frequency based parameters is presented in this paper to classify the seizure activity from an EEG signal. A well-known dataset consisting of EEG signals of healthy volunteers and epileptic patients, under different stages, has been used in this study. EMD has been employed for the decomposition of an EEG signal into a set of intrinsic mode functions (IMFs). First four IMFs have been considered in this work. Two amplitude based parameters and one frequency based parameter have been extracted from each of the four IMFs. The validation of the extracted parameters of all IMFs has been carried out by Kruskal-Wallis statistical test and box plot method. ...
This paper aim to generate and take Action potential signal (AP) then converts it to digital signal based on one bit Sigma-Delta converter (∑-∆) to produce a 1-bit stream represent this signal with resolution of 10 bit. This data has been stored in proposed memory created in electronic device called Field Programmable Gate Array (FPGA) by which also the proposed converter had been designed and implemented practically. Finally, the obtained results analyzed and compared with other converter techniques to show the difference in the results and performance ...
Abstract:The maximum community speed was 144 µm/sec, and the maximum individual burst velocity was 407 µm/sec. P.882 left column bottom paragraph:In the swarm, at an average speed of 144µm/sec, the time [signal-processing time] is about 0.048 s. The maximum available processing time for the highest observed burst speed (407µm/sec) is 0.006 s. From this, [investigators] propose that signal-processing times are less than 0.1 s for some marine bacteria ...
The local polynomial approximation of time-varying phase is used in order to estimate the instantaneous frequency and its derivatives for a complex-valued harmonic signal given by discrete-time observations with a noise. The considered estimators are high-order nonparametric generalizations of the short-time Fourier transform and the Wigner-Ville distribution. The asymptotic variance and bias of the estimates are obtained. © 1997 IEEE ...
In the earlier studies, many methods have been used for TVEP P100 latency analysis and those methods have adopted only time domain analysis. In time domain analysis, at higher rate of stimulation, it is very difficult to identify the exact P100 values due to the irregular peaks. As the rate of stimulation increases, the visual system will not get time to come back to the original state before the next stimulation. Because of this reason, the responses will overlap, thus making it difficult to measure the exact P100 value. At the higher rate of stimulation, the TVEP is almost similar to sinusoidal waveform (Heravian et al 1999) and it is called SSVEP. Many researchers have utilized the frequency domain analysis for SSVEP (Tobimatsu et al 1996, Nakayama 1994, Suttle 2001, Marreli et al 2001). In our previous studies (Sivakumar and Ravindran 2002, Sivakumar and Ravindran 2004), the frequency domain method has been utilized for TVEP analysis for a constant stimulation rate (1Hz). In this study, TVEP ...
VMEbus Automatic Video Tracker. The Model 7005-CL VMEbus Automatic Video Tracker (AVT) represents the latest tracker technology in our continued commitment to product innovation and improvement. The tracker provides the user a system easily adapted to a wide range of targets and tracking environments. The single board tracker incorporates the latest in digital signal processing (DSP) and field programmable gate array (FPGA) technology providing a flexible architecture for customization. The tracker interfaces with both analog and digital video sources, providing ease in interfacing with a wide variety of sensor systems. The analog video interface provides full 12-bit, 4096 gray level capability, supporting camera resolutions up to 1024 x 1024. The Camera Link digital video interface can support resolutions up to 2048 x 2048 with 16-bit depth and frame rates up to 4000 Hz. The tracker design incorporates a multiple DSP implementation allowing concurrent operation of algorithms in realtime.. The ...
0102] Image processor 830 is configured to receive image frames from sensor 820 (and other data gathering devices, such as trajectory sensors or the like) and perform image processing, as discussed herein. Image processor 830 may include hardware, such as Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), digital signal processors (DSPs), or other integrated formats. However, those skilled in the art will recognize that processor 830 may, in whole or in part, be equivalently implemented in integrated circuits, as one or more computer programs having computer-executable instructions or code running on one or more computers (e.g., as one or more programs running on one or more computer systems), as one or more programs running on one or more processors (e.g., as one or more programs running on one or more microprocessors), as firmware, or as any combination thereof, and that designing the circuitry and/or writing the code for the software and/or firmware ...
A Turing machine is a model describing the fundamental limits of any realizable computer, digital signal processor (DSP), or field programmable gate array (FPGA). This paper shows that there exist very simple linear time-invariant (LTI) systems which can not be simulated on a Turing machine. In particular, this paper considers the linear system described by the voltage-current relation of an ideal capacitor. For this system, it is shown that there exist continuously differentiable and computable input signals such that the output signal is a continuous function which is not computable. ...
Visible light communications (VLC) based on light-emitting diodes (LEDs) merges lighting and data communications in applications of Internet-of-Things and 5G networks. However, phosphor-based white LED has a limited linear dynamic range and limited modulation bandwidth. In practical indoor mobile communications, complex channel conditions change dynamically in real-time, and line of sight (LOS) links may be blocked by obstructions. We propose a real-time software-defined adaptive multi-input multi-output (MIMO) VLC system, that both modulation formats (QPSK,16-QAM,64-QAM, 256QAM) and MIMO reconfigurations (Spatial Diversity and Spatial Multiplexing) are dynamically adapted to the changing channel conditions, for enhancing both link reliability and spectral efficiency. Real-time and software defined digital signal processing (DSP) are implemented by Field Programmable Gate Array (FPGA) based Universal Software Radio Peripheral (USRP) devices. We theoretically analysed and experimentally evaluated
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Methods and devices for reducing noise effects in a system for measuring a physiological parameter, including receiving an input signal; obtaining an assessment of the signal quality of the input sign
An image scanner for microscopic objects. The image scanner has a microscope with a high precision computer controlled motor driven stage to provide X,Y plane displacements in order to scan microscopic objects under the microscope. There is an image sensor and a digitizer in association with the microscope to sense a horizontal image line or a two dimensional image and provide a digital representation of the line or image. A digital signal processor processes digitized signals from the sensor. There is a computer to control the mechanical and electronic scanning and to store and display information from the digital signal processor. Methods of scanning a microscopic object are also described. The methods comprise positioning the object on a motorized stage of a microscope having an image sensor in a focal plane. The object is scanned and signals received from the sensor during scanning are digitized. The digitized signals are processed with a digital signal processor in order to automatically recognize
This review provides an introduction to the use of parametric modelling techniques for time series analysis, and in particular the application of autoregressive modelling to the analysis of physiological signals such as the human electroencephalogram. The concept of signal stationarity is considered and, in the light of this, both adaptive models, and non-adaptive models employing fixed or adaptive segmentation, are discussed. For non-adaptive autoregressive models, the Yule-Walker equations are derived and the popular Levinson-Durbin and Burg algorithms are introduced. The interpretation of an autoregressive model as a recursive digital filter and its use in spectral estimation are considered, and the important issues of model stability and model complexity are discussed.
Cray has turned to a small start-up for possible help with its grand plan to win a multi-million dollar contract from the US government.. Cray this week announced that it will use a specialized coprocessor from DRC to slot into its Opteron-based systems. The DRC product - an FPGA (field programmable gate array) module - will allow Crays supercomputers to churn through specific workloads such as algorithms and subroutines at a much quicker pace than standard Opteron chips alone. Cray plans to use FPGA-ready servers as one piece of its Cascade project that is competing with rival projects from Sun Microsystems and IBM for a piece of a $200m DARPA contract.. Cray has been going the FPGA route for quite awhile, and, in fact, purchased OctigaBay in 2004 to boost these efforts. The OctigaBay gear was turned into the XD1 systems, which can have up to 144 Opteron chips. Each XD1 chassis can currently hold up to six Xilinx Virtex-4 FPGAs.. Now, however, customers will use the DRC FPGA modules in ...
A field programmable gate array (FPGA) implementation of the Gabor-type filter is presented. The implementation uses the forward Euler approximation with optimal step size to solve the CNN cell-state equation. The FPGA is ...
A. Singh, Mukherjee, A., and Marek-Sadowska, M., Interconnect pipelining in a throughput-intensive FPGA architecture, in FPGA 01: Proceedings of the 2001 ACM/SIGDA ninth international symposium on Field programmable gate arrays, 2001, pp. 153-160. ...
Xilinx Integrated Block for the PCI Express Gen3 Standard Accelerates Productivity and Increases System Performance: �Xilinx, Inc. (NASDAQ: XLNX) today announced its solution for designs using the Virtex®-7 field programmable gate array (FPGA) integrated block for PCI Express® x8 Gen3 with DDR3 external memory, providing developers with all the building blocks needed to get started on PCI Express Gen3-based designs immediately. The Xilinx® integrated blocks for the PCI …
Progeniq has announced a Universal version of its BioBoost Accelerated HMMer application for Mac OS X, which provides hardware accelerated processing for Hidden Markov models (HMMs) -- generally used for protein and DNA sequence analysis. The new release uses Field Programmable Gate Array (FPGA) tec
N. Steiner, A. Wood, H. Shojaei, J. Couch, P. Athanas, and M. C. French, Torc: towards an open-source tool flow, Proceedings of the 19th ACM/SIGDA international symposium on Field programmable gate arrays, New York, NY, USA, ACM, pp. 41-44, 2011. ...
Physiological signals such as the electrocardiogram (ECG) and arterial blood pressure (ABP) in the intensive care unit (ICU) are often severely corrupted by noise, artifact and missing data, which lead to large errors in the estimation of the heart r
Something called the fast Fourier transform is running on your cell phone right now. The FFT, as it is known, is a signal-processing algorithm that you use more than you realize. It is, according to the title of one research ...
To accurately extract the fault characteristics of vibration signals of rotating machinery is of great significance to the unit online monitoring and evaluation. However, because the current feature extraction methods are mainly for single channel, the results of feature extraction are often inaccurate. To this end, a coupling fault feature extraction method based on bivariate empirical mode decomposition (BEMD) and full spectrum is proposed for rotating machinery. Firstly, the two-dimensional orthogonal signal obtained by orthogonal sampling technique is decomposed by bivariate empirical mode decomposition to obtain the intrinsic mode function with phase information. In order to obtain the sensitive modal components, the sensitivity coefficients are constructed on the basis of mutual information. Then, the sensitivity coefficient of each intrinsic mode function is calculated, and the intrinsic mode function with the larger sensitive coefficient is selected as the sensitive component. Finally, the full
The electrocardiogram (ECG) signal is a fundamental tool for patient treatment, especially in the cardiology domain, due to the high mortality rate of heart diseases. The main objective of this paper is to present the most optimal techniques that can link the processing and analysis of ECG signals. This work is divided into two steps. In the first one, we propose a comparison between some denoising techniques that can reduce noise affecting the ECG signals; these techniques are the empirical mode decomposition (EMD), the ensemble empirical mode decomposition (EEMD), and the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN). In the second one, we make a comparison of three time-frequency techniques: the Choi-Williams (CW), the periodogram (PE), and the smoothed pseudo Wigner-Ville (SPWV). Firstly, the obtained results illustrate the effectiveness of the CEEMDAN in reducing noise that interferes with ECG signals compared to other denoising methods. Secondly, they show that the
Lease. Request Sample Report @ Important Key questions answered in MPV ACC Digital Signal Processor market report:. What will the market growth rate, Overview, and Analysis by Type of MPV ACC Digital Signal Processor in 2024?. What are the key factors affecting market dynamics? What are the drivers, challenges, and business risks in MPV ACC Digital Signal Processor market?. What is Dynamics, This Overview Includes Analysis of Scope and price analysis of top Manufacturers Profiles?. Who Are Opportunities, Risk and Driving Force of MPV ACC Digital Signal Processor market? Knows Upstream Raw Materials Sourcing and Downstream Buyers.. Who are the key manufacturers in space? Business Overview by Type, Applications, Gross Margin, and Market Share. What are the opportunities and threats faced by manufacturers in the global market?. You can Buy This Report from Here @ ...
The present invention provides a digital signal processing method and system thereof for producing precision platform orientation measurements and local Earths magnetic measurements by measuring threes axes gravity acceleration digital signals by an acceleration producer, detecting Earths magnetic field vector measurement by an Earths magnetic field detector to achieve digital three-axes Earths magnetic field vector signals, and producing pitch, roll, and heading angles using said three-axes gravity acceleration digital signals and said digital three-axes Earth magnetic field vector signals by a Digital Signal Processor (DSP) chipset.
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0045] The ECG signal may experience rapid and wide variations in amplitude due to interference from unrelated signals. For example, the ECG signal may include noise due to a nearby electronic device. ECG signal noise can also be caused by electrodes sliding on the patients body due to extreme patient movement, such as vigorous exercise. A poorly fit electrode belt or garment can allow the electrodes to slide on the patients body even with minor patient movement. Typically, the dynamic range of the signal acquisition circuit 300 is limited and not suited to accommodate large fluctuations of the signal input. The ALC 314 allows the signal acquisition circuit 300 to use the entire dynamic range of the ECG signal by controlling the amount of attenuation provided at the programmable attenuation/gain stage 306. The signal acquisition circuit 300 is configured to detect ECG signals between the range of about 100 microvolts and about 5 millivolts, with signals below about 80 microvolts being ...
The goal of DSP is usually to measure, filter and/or compress continuous real-world analog signals. The first step is usually to convert the signal from an analog to a digital form, by sampling it using an analog-to-digital converter (ADC), which turns the analog signal into a stream of numbers. However, often, the required output signal is another analog output signal, which requires a digital-to-analog converter (DAC). Even if this process is more complex than analog processing and has a discrete value range, the application of computational power to digital signal processing allows for many advantages over analog processing in many applications, such as error detection and correction in transmission as well as data compression.[1] DSP algorithms have long been run on standard computers, on specialized processors called digital signal processors (DSPs), or on purpose-built hardware such as application-specific integrated circuit (ASICs). Today there are additional technologies used for digital ...
A new method of spectral analysis, using an approach we call the empirical mode decomposition (EMD) and the Hilbert spectrum analysis (HSA), is presented. The EMD method decomposes any data into a finite number of intrinsic mode function (IMF) components with time-variable amplitudes and frequencies. This decomposition is nearly orthogonal and totally adaptive. With the decomposition, a Hilbert, rather than Fourier, transform is applied to each IMF component, which gives each component instantaneous frequency and energy density. This approach is totally new, and it is different from any of the existing methods: it uses differentiation to define the frequency rather than the traditional convolution computation; thus, it gives the instantaneous frequency and energy density. The greatest advantage of the new approach is that it is the only spectral analysis method applicable to nonstationary and nonlinear data. To illustrate the capability of his new method, we have applied it to the earthquake ...
article{3004d42f-c464-4188-bf60-ba0491925d72, author = {Bennhagen, Rolf and Sörnmo, Leif and Pahlm, Olle and Pesonen, Erkki}, issn = {1399-3046}, language = {eng}, number = {6}, pages = {773--779}, publisher = {Wiley-Blackwell}, series = {Pediatric Transplantation}, title = {Serial signal-averaged electrocardiography in children after cardiac transplantation.}, url = {}, volume = {9}, year = {2005 ...
Designed for a first course in digital signal processing, Digital Signal Processing: Spectral Computation and Filter Design covers two major topics: the computation of frequency contents of signals and the design of digital filters. While it focuses on basic ideas and procedures and covers the standard topics in the field, this unique text distinguishes itself from competing texts by extensively employing the fast Fourier transform (FFT).
Get this from a library! Pattern recognition and signal analysis in medical imaging. [Anke Meyer-Bäse; Volker Schmid] -- Medical imaging is one of the heaviest funded biomedical engineering research areas. The second edition of Pattern Recognition and Signal Analysis in Medical Imaging brings sharp focus to the ...
A textbook suitable for either a one-semester or a two-semester undergraduate course in discrete systems and digital signal processing, or a one-semester first-year graduate course in digital signal processing. It presents the fundamentals of discrete-time signals, systems, and modern digital proces
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Abstract Blind Source Separation (BSS) techniques aim to extract a set of source signals from a measured mixture in an unsupervised manner. In the chemical instrumentation domain source signals typically refer to time-varying analyte concentrations, while the measured mixture is the set of observed spectra. Several techniques exist to perform BSS on Ion Mobility Spectrometry, being Simple-to-use interactive self-modeling mixture analysis (SIMPLISMA) and Multivariate Curve Resolution (MCR) the most commonly used. The addition of a multi-capillary gas chromatography column using the ion mobility spectrometer as detector has been proposed in the past to increase chemical resolution. Short chromatography times lead to high levels of co-elution, and ion mobility spectra are key to resolve them. For the first time, BSS techniques are used to deconvolve samples of the gas chromatography - ion mobility spectrometry tandem. We propose a method to extract spectra and concentration profiles based on the ...
Is sewer-based wastewater treatment really the optimal technical solution in urban water management? This paradigm is increasingly being questioned. Growing water scarcity and the insight that water will be an important limiting factor for the quality of urban life are main drivers for new approaches in wastewater management. Source Separation and Decentralization for Wastewater Management sets up a comprehensive view of the resources involved in urban water management. It explores the potential of source separation and decentralization to provide viable alternatives to sewerbased urban water management. During the 1990s, several research groups started working on sourceseparating technologies for wastewater treatment. Source separation was not new, but had only been propagated as a cheap and environmentally friendly technology for the poor. The novelty was the discussion whether source separation could be a sustainable alternative to existing end-of-pipe systems, even in urban areas and ...
We have developed a high-performance signal-processing and image-rendering heterogeneous computation system for optical coherence tomography (OCT) on mobile processor. In this paper, we reveal it by demonstrating real-time OCT image processing using a Snapdragon 800 mobile processor, with the introduction of a heterogeneous image visualization architecture (HIVA) to accelerate the signal-processing and image-visualization procedures. HIVA has been designed to maximize the computational performances of a mobile processor by using a ...
Sampling. Discrete Fourier Transform. IIR filter design. FIR filter design. Digital filter structures. Digital filter implementations. Fast Fourier transforms. Digital signal processors. Numerical errors. Spectral analysis. Two-dimensional discrete signals. Two-dimensional z-tranform. Two-dimensional Discrete Fourier Transform. Design and realization of two-dimensional digital filters. Applications in voice processing and biomedical signals. ...
Signal mixtures tend to have Gaussian probability density functions, and source signals tend to have non-Gaussian probability density functions. Each source signal can be extracted from a set of signal mixtures by taking the inner product of a weight vector and those signal mixtures where this inner product provides an orthogonal projection of the signal mixtures. The remaining challenge is finding such a weight vector. One type of method for doing so is projection pursuit.[8][9] Projection pursuit seeks one projection at a time such that the extracted signal is as non-Gaussian as possible. This contrasts with ICA, which typically extracts M signals simultaneously from M signal mixtures, which requires estimating a M × M unmixing matrix. One practical advantage of projection pursuit over ICA is that fewer than M signals can be extracted if required, where each source signal is extracted from M signal mixtures using an M-element weight vector. We can use kurtosis to recover the multiple source ...
This is Digital Version of (Ebook) 978-1441951816 Retargetable Code Generation for Digital Signal Processors Product Will Be Delivered Via Email Or Cl
This is the eBook version of the printed book.The Most Complete, Modern, and Useful Collection of DSP Recipes: More Than 50 Practical Solutions and More than 30 Summaries of Pertinent Mathematical Concepts for Working Engineers Notes on Digital Signal Processing is a comprehensive, easy-to-use collection of step-by-step procedures for designing and implementing modern DSP solutions. Leading DSP expert and IEEE Signal Processing Magazine associate editor C.
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Show moreBlind Source Separation (BSS) is a vital unsupervised stochastic area that seeks to estimate the underlying source signals from their mixtures with minimal assumptions about the source signals and/or the mixing environment. BSS has been an active area of research and in recent years has been applied to numerous domains including biomedical engineering, image processing, wireless communications, speech enhancement, remote sensing, etc. Most recently, Independent Component Analysis (ICA) has become a vital analytical approach in BSS. In spite of active research in BSS, however, many foundational issues still remain in regards to convergence speed, performance quality and robustness in realistic or adverse environments. Furthermore, some of the developed BSS methods are computationally expensive, sensitive to additive and background noise, and not suitable for a real4time or real world implementation. In this thesis, we first formulate new effective ICA4based measures and their ...
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Info concerning Wilkes University digital signal processing. To earn a higher salary, compare accredited engineering concentrations, and research technical certificate programs in your chosen field.
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Find information about Baldwin Wallace College digital signal processing. As the entrance requirements for engineering programs vary, learn about the various specialization options available.
A moment-enhanced spectrogram is an iteratively improved spectrogram whose useful low-order time frequency moments (e.g. spectral energy, group delay, instantaneous power or envelope power, and instantaneous frequency) are identical to those of commonly used time-frequency distributions, (e.g. Wigner-Ville), without having any negative values or interference terms. This paper presents a detailed intercomparison of moment-enhanced spectrograms, Wigner-Ville distributions, and spectrograms for a...
Linear Independent Components Analysis (ICA) has become an important signal processing and data analysis technique, the typical application being blind source separation in a wide range of signals, such as biomedical, acoustical and astrophysical ones. Nonlinear ICA is less developed, but has the potential to become at least as powerful. This paper presents MISEP, an ICA technique for linear and nonlinear mixtures, which is based on the minimization of the mutual information of the estimated components. MISEP is a generalization of the popular INFOMAX technique, which is extended in two ways: (1) to deal with nonlinear mixtures, and (2) to be able to adapt to the actual statistical distributions of the sources, by dynamically estimating the nonlinearities to be used at the outputs. The resulting MISEP method optimizes a network with a specialized architecture, with a single objective function: the output entropy. Examples of both linear and nonlinear ICA performed by MISEP are presented in the ...
Digital Signal Processing Using MATLAB for Students and Researchers Book Summary : Quickly Engages in Applying Algorithmic Techniques to Solve Practical Signal Processing Problems With its active, hands-on learning approach, this text enables readers to master the underlying principles of digital signal processing and its many applications in industries such as digital television, mobile and broadband communications, and medical/scientific devices. Carefully developed MATLAB® examples throughout the text illustrate the mathematical concepts and use of digital signal processing algorithms. Readers will develop a deeper understanding of how to apply the algorithms by manipulating the codes in the examples to see their effect. Moreover, plenty of exercises help to put knowledge into practice solving real-world signal processing challenges. Following an introductory chapter, the text explores: Sampled signals and digital processing Random signals Representing signals and systems Temporal and ...
There are 200+ professionals named ramesh subramanian, who use linkedin to exchange information, ideas, and opportunities.. Introduction to digital signal processing, reviewof discrete- time signals and systems, analysis of discrete- time linear time invariant systems,. If you re writing a signals and systems essay and need some advice, post your p. Ramesh babu essay signal and system book by ramesh babu subramanian question on our facebook page where fellow bookworms are always glad to help! The system via block diagrams. Co 3 apply fourier series and fourier transform for signal analysis co 4 apply sampling theorem signal and system book by ramesh babu subramanian to sample and reconstruct an analog signal.. Co 5 analyze lti systems signal and system book by ramesh babu subramanian using z- transforms. Unit- i ( 10 lectures) signals: signal definition, continuous time, discrete time and digital signals,. No ebook available a. Anand kumar i have been through, 2 other text books but this is ...
The rapid growth of data size and accessibility in recent years has instigated a shift of philosophy in algorithm design for artificial intelligence. Instead of engineering algorithms by hand, the ability to learn composable systems automatically from massive amounts of data has led to ground-breaking performance in important domains such as computer vision, speech recognition, and natural language processing. The most popular class of techniques used in these domains is called deep learning, and is seeing significant attention from industry. However, these models require incredible amounts of data and compute power to train, and are limited by the need for better hardware acceleration to accommodate scaling beyond current data and model sizes. While the current solution has been to use clusters of graphics processing units (GPU) as general purpose processors (GPGPU), the use of field programmable gate arrays (FPGA) provide an interesting alternative. Current trends in design tools for FPGAs ...
The imaging payload of the Corvus-BC satellites comprises three nearly identical imagers that are only distinguished by their spectral filters to collect imagery in the Landsat bands. Corvus-BC covers a green band (520-600nm), red (630-690nm) and a near infrared band (770-900nm) using imagers with a 21.0 by 14.9-degree field of view to capture imagery across a 220-Kilometer swath with a nominal resolution of 22 meters.. The 70-megapixel CMOSIS CHR70M image sensors employ electronic rolling shutters and operate at a frame rate of 0.5 frames per second; Field Programmable Gate Array technology is used for conversion of the analog sensor data to digital images with a 12-bit depth.. Corvus-BC has a 1TB data storage and a daily imaging capacity of 1.2 TB, corresponding to a ground coverage area of 150 million square Kilometers (for a Ka-Band link of 170Mbps).. The Landmapper-HD constellation will comprise 20 Corvus-HD satellites that comply with the 16U form factor and weigh around 20 Kilograms, ...
How to achieve it? Try to use more intelligent industrial cameras, which have a built-in internal memory sometimes called a buffer. Together with FPGA (field programmable gate array) they will do a lot of work that will appreciate your software for image processing. These functions are often also called pre-processing features.. What if you have a project where the camera must send images much faster than the USB or Ethernet interface allows?. For simple cameras, this would mean using a much faster interface, which of course would make the complete solution more expensive. Instead, you can use the Smart Framer Recall function in standard USB and GigE cameras, which generates small preview images with reduced resolution (thumbnails) with an extremely accelerated number of frames per second, which are transferred to the host PC with IDs. At the same time, the corresponding image in full resolution is archived in the cameras image memory. If the image is required in full resolution, the ...
Data Acquisition Systems help you to measure the real-world physical problems such as pressure, force, temperature, current, an electrical signal, etc. These Analog signals are then converted into digital signals with the help of an Analog to Digital Conversion system, also called the ADC system. These digital signals are then analysed for their credibility and hooked up with the software installed in your computer. What Does a Data Acquisition System Do Internally?. A DAQ system uses sensors which are called transducers, to transform the physical parameters such as temperature, current, pressure, force, etc into Analog electrical signals such as AC/DC currents, AC/DC volts, etc. In the next step, a DAQ system has in-built circuitries that carry out signal conditioning, i.e., the DAQ system reduces the unwanted noise signals and makes them easier to measure, boost signals and gives them immunity to noise. These circuitries filter out the unwanted noise and attenuate the signals. Mentioned below ...
He is currently a post-doc research fellow at the Biophysics and Biosignals Laboratory of the Department of Physics at the University of Trento. He collaborates with the Local Health Authority (APSS) in the research management of the ESEM-FEG electron microscope located at the Microbiology and Virology Laboratory of S. Chiara general hospital in Trento. Degrees: ...
Abstract. Background: Accurate, non-invasive diagnosis of, and screening for, coronary artery disease (CAD) and restenosis after coronary revascularization has been a challenge due to either low sensitivity/specificity or relevant morbidity associated with current diagnostic modalities.. Methods: To assess sensitivity and specificity of a new computerized, multiphase, resting electrocardiogram analysis device (MultiFunction-CardioGramsm or MCG a.k.a. 3DMP) for the detection of relevant coronary stenosis (,70%), a meta-analysis of three published prospective trials performed in the US on patient data collected using the US manufactured device and analyzed using the US-based software and New York data analysis center from patients in the US, Germany, and Asia was completed. A total of 1076 patients from the three trials (US - 136; Germany - 751; Asia - 189) (average age 62 ± 11.5, 65 for women, 60 for men) scheduled for coronary angiography, were included in the analysis. Patients enrolled in the ...
Aim: To explore adequate parameters for EMD of ABP signal; to determine the intrinsic characteristics of ABP waveform through the analysis of IMFs averaged period ..
We will make the innovative HC-1 servers available to computer science and application researchers in our NSF-funded GreenLight Project to find more examples of such dramatic results, said Dr. Thomas DeFanti, GreenLights principal investigator and a Calit2 Senior Research Scientist. Project GreenLight is an environmental initiative at UC San Diego that is investigating energy efficient, high-performance computing [HPC] solutions and new ways to boost performance while simultaneously reducing power, cooling and energy needs.. The HC-1 is a remarkably ingenious and innovative HPC architecture, which combines the best of both worlds of general purpose multi-core and special-purpose Field Programmable Gate Arrays, said Dr. Larry Smarr, director of the California Institute for Telecommunications and Information Technology (Calit2) and a professor of Computer Science and Engineering (CSE) in UCSDs Jacobs School of Engineering. Once again, Steve Wallach has introduced a new class into HPC ...
In this subject, students explore advance digital signal processing (DSP) by analysing and solving problems in real world digital signal systems. Students first study the necessary analytical DSP skills including fast Fourier transform, discrete cosine transform, spectrum analysis and digital models of speech, and then apply these tools to audio, communication systems and image processing applications by analysing and implementing linear predictive codes, polyphase filters and finite and infinite impulse response filters. This subject provides excellent exposure of DSP to students wishing to pursue a career in fields involving digital audio, communication and image processing. ...
"A computer-assisted thin-section study of Lake Baikal sediments: a tool for understanding sedimentary processes and deciphering ... their climatic signal". International Journal of Earth Sciences. 89 (2): 260-267. doi:10.1007/s005319900064. Hutchinson, D.R.; ... "Sedimentation processes and new age constraints on rifting stages in Lake Baikal: results of deep-water drilling". ... Academician Ridge also plays an important role in deep-water mixing processes and the circulation of bottom currents. Water ...
The excited atoms emit a radio frequency (RF) signal, which is measured by a receiving coil. The RF signal may be processed to ... Journal of Computer Assisted Tomography. 16 (6): 956-65. doi:10.1097/00004728-199211000-00024. PMID 1430448. Gore, J. C.; ... International Journal of Signal Processing, Image Processing and Pattern Recognition. 6 (1): 49-53. Nolen-Hoeksema S (2014). ... "Iterative Sparse Asymptotic Minimum Variance Based Approaches for Array Processing". IEEE Transactions on Signal Processing. 61 ...
... formula for the variance Computational learning theory Computational statistics Computer experiment Computer-assisted survey ... signal processing) Innovations vector Institutional review board Instrumental variable Intention to treat analysis Interaction ... Markov process Markov property Markov random field Markov renewal process Markov's inequality Markovian arrival processes ... signal processing) Coherence (statistics) Cohort (statistics) Cohort effect Cohort study Cointegration Collectively exhaustive ...
... computer-based education technology, portrait compression, signal processing for the hearing impaired, document recognition and ... Another important project appears to have been computer assisted medical diagnosis - a computer-based system to aid physicians ... Haifa's expertise in signal processing was key to the development of this project. ... This allowed the Haifa team to buy their first computer. It was a 5110-a portable computer roughly the size of a suitcase. The ...
Surgical process models are described from observer based acquisition, or sensor-based acquisition (such as signals, or videos ... International Conference on Information Processing in Computer-Assisted Interventions (IPCAI) The Computer Assisted Radiology ... Computer-based technology assists medical professional in processing and acting on complex information . In order to gain an ... ISBN 978-3-319-24601-7. Lalys F, Jannin P. Surgical process modelling: a review. International Journal of Computer Assisted ...
"Complex cognitive processes account for the human ability to associate acoustic signals with meanings and intentions. For a ... Computer-assisted language learning (CALL), British, or Computer-Aided Instruction (CAI)/Computer-Aided Language Instruction ( ... and mobile-assisted language learning (MALL). The term CALI (computer-assisted language instruction) was in use before CALL, ... Warschauer M. (1996) "Computer-assisted language learning: an introduction". In Fotos S. (ed.) Multimedia language teaching, ...
2012). Accent reduction for computer-aided language learning. 20th European Signal Processing Conference 335-339. van Doremalen ... Al-Awidi, H. and S. Ismail (2012). Teachers' Perceptions of the Use of Computer Assisted Language Learning to Develop ... In recent years, several countries have begun to employ computer-aided language learning (CALL) systems to assist their ... Computer Language systems have now come to the forefront and now have the ability to broadcast or playback audio for use in the ...
Medical Image Computing and Computer-Assisted Intervention-MICCAI 2012. Lecture Notes in Computer Science. 7510. Springer. pp. ... IEEE Signal Processing Magazine. 31 (1): 45-54. arXiv:1310.5107. Bibcode:2014ISPM...31...45C. doi:10.1109/msp.2013.2279179. ... Lecture Notes in Computer Science. 3559. Springer. pp. 470-485. CiteSeerX doi:10.1007/11503415_32. ISBN 978-3- ... Lecture Notes in Computer Science. 3559. Springer. pp. 486-500. CiteSeerX doi:10.1007/11503415_33. ISBN 978-3- ...
Works such as Sound and Fury are of interest because of the use of computer-assisted composition. Sound and Fury also uses a ... are among the first pieces to utilize real-time audio signal processing, and Pluton was the first ever composition using ... In 1975, he undertook studies in computer assisted composition with Pierre Barbaud [fr], and joined IRCAM as a composer and ... Since the 1980s, Manoury has been closely associated with the American computer researcher Miller Puckette, first at IRCAM and ...
The sound processing is done on a separate computer. The XTH Sense is a wearable instrument that uses muscle sounds from the ... An electronic keyboard sends a signal to a synth module, computer or other electronic or digital sound generator, which then ... Lejaren Hiller and Leonard Issacson composed Illiac Suite for string quartet, the first complete work of computer-assisted ... including computer-played music (software sequencer), computer-composed music (music synthesis), and computer sound generation ...
CS1 maint: discouraged parameter (link) Computer-Assisted Eye Surgery in Computer-integrated Surgery: Technology and Clinical ... Richard Mammone, Digital Signal Processing". Rutgers, The State University of New Jersey. Retrieved January 31, 2010. CS1 maint ... He performed research on Neural networks and signal processing, generating over 15 patents and producing 150 published papers.[ ... Mammone's research interests lie in computational pattern recognition and signal processing. ...
... the first computer-assisted instructional program and the plasma TV. Today, research thrusts include computer vision, economics ... signal, image and speech processing and thin film electronics. Research at CSL is conducted by more than 100 faculty members ... the first computer-based education system) Flat panel plasma displays Deuterium Method for processing microchips (extends the ...
Image and Signal Processing for Networked E-health Applications. Morgan & Claypool Publishers. p. 41. ISBN 978-1-59829-036-3. ... SCP-ECG, which stands for Standard communications protocol for computer assisted electrocardiography, is a standard for ECG ...
... and Signal Processing. In 2018, Kundu was a speaker at the United Nations A.I. for Good global summit in Geneva, Switzerland, ... in Journal of Computer Assisted Tomography 28(3): 485-87. S. Kundu, J. Bryk and A. Alam, Resolution of Suicidal Ideation With ... Before completing high school at 16, Kundu would help her father, a computer engineer, take apart computers. This influenced ... Speech and Signal Processing (ICASSP). pp. 1349-1352. doi:10.1109/ICASSP.2012.6288140. ISBN 978-1-4673-0046-9. ITU (2018-05-21 ...
SigLab, a Common Lisp platform for signal processing used in missile defense, built by Raytheon NASA's Mars Pathfinder Mission ... PWGL is a sophisticated visual programming environment based on Common Lisp, used in Computer assisted composition and sound ... Opusmodus is a music composition system based on Common Lisp, used in Computer assisted composition Prototype Verification ... OpenMusic is an object-oriented visual programming environment based on Common Lisp, used in Computer assisted composition. ...
An integrated DAW consists of a digital signal processing, control surface, audio converters, and data storage in one device. ... DAW can simply refer to the software itself, but traditionally, a computer-based DAW has four basic components: a computer, a ... it may also assist in further processing of the audio. The software controls all related hardware components and provides a ... In a traditional recording studio additional rackmount processing gear is physically plugged into the audio signal path to add ...
The simulators include development and debugging environments that assist in the design of the logic for chips and computer ... Cadence has granted CoWare an exclusive license to sell and develop Cadence's Signal Processing Workstation (SPW) tool, and Co- ... In 2005, CoWare acquired the Signal Processing department from Cadence. On February 8, 2010, Synopsys has announced an ... Its products included: Platform Architect, Model Designer, Model Library, Processor Designer, Signal Processing Designer and ...
In order to distinguish between humans, heavy objects, and empty seats, signal processing techniques are used. The first robot ... This test is used to ensure that computer is operated by a human, preventing spam robots. Face detection Human sensing Captcha ... assist in the digitization of books. A sensor based on a piezoelectric film (EMFI sensor) is used to detect mechanical ... In 1997 CAPTCHA ("Completely Automated Public Turing test to tell Computers and Humans Apart") was invented. ...
Processing of sound and music signals: This subfield focuses on audio signal processing techniques for the analysis, ... Assisted sound and music creation: This subfield focuses on the development of computer tools for assisting Sound design and ... Interfaces for sound and music: This subfield focuses on the design and implementation of computer interfaces for sound and ... Summer School of Systematic Musicology Darmstadt School European Summer School in Information Retrieval IEEE Signal Processing ...
Digital Signal Processing and Logic Design Lab classes. Also other departments have well equipped lab facilities. The Students ... The Computer Science and Engineering department has state of the art network of computers to cater the needs of students. There ... of Karnataka also assisting in building SC/ST Book Bank in the library. From recent past, the collection has also been ... GEC Hassan is one such college established with four branches of engineering, namely, Civil Engineering, Computer Science & ...
Frank Gilmurray assisted with the initial part of this implementation. At Stanford in 1979 Bill wrote the ttyftp serial line ... Here, Bill was responsible for a small computer laboratory for biomedical applications of mass spectrometry. This laboratory in ... Critical signal thread] [US Patent 6,457,064 - Method and apparatus for detecting input directed to a thread in a multi- ... threaded process] [US Patent 7,065,579 - System using peer discovery and peer membership protocols for accessing peer-to-peer ...
Natural Language Processing and Computer-Assisted Language Learning. The goal of ILSP is to support the growth of Language ... Expertise used by the Institute includes basic fields as natural language processing, digital signal processing and pattern ... The research taking place both for Natural Language Processing and Speech Processing gives these areas new impetus, which stems ... ILSP carries out applied research in Man-Machine Interfaces, machine learning, speech processing, text processing, theoretical ...
Signal Image and Video Processing 3 (2): 137-144. Jafar FA, et al (Mar 2011). "An Environmental Visual Features Based ... "Searching for the most important feature types signalling emotion-related user states in speech." Computer Speech and Language ... Trejos AL, et al (Sep 2009). "Robot-assisted Tactile Sensing for Minimally Invasive Tumor Localization." International Journal ... It enables the robot to predict the resulting sensor signals of its internal motions, screening these false signals out. The ...
Signal Processing and their Applications. pp. 264-268. Peng, Yi; Chen, Li; Ou-Yang, Fang-Xin; Chen, Wei; Yong, Jun-Hai (2015 ... International Conference on Medical Image Computing and Computer-Assisted Intervention. pp. 916-924. doi:10.1007/978-3-540- ... Vineet, Vibhav; Narayanan, PJ (2008). CUDA cuts: Fast graph cuts on the GPU (PDF). IEEE Computer Society Conference on Computer ... IEEE Computer Society Conference on Computer Vision and Pattern Recognition. 2. pp. 939-946. Goldberg, Andrew V; Tarjan, Robert ...
... a process known as 'patching') either pre-defined or user-defined modules, in a similar manner to graphical signal-processing ... OpenMusic is the last in a series of computer-assisted composition software designed at IRCAM. Versions of OpenMusic are ...
... and processes; process engineering; quality process improvement and health information technology; computer hardware; software ... Signal Processing, Image Processing". Medical Informatics in Neurology. Nadri H, Rahimi B, Timpka T, Sedghi S (August 2017). " ... Mihailidis A, Boger JN, Craig T, Hoey J (November 2008). "The COACH prompting system to assist older adults with dementia ... computer medicine, medical electronic data processing, medical automatic data processing, medical information processing, ...
Computer Aided Design and Engineering systems, and complex signal processing algorithms and circuits. Singleton was born in ... led a team that developed one of the first computer assisted integrated circuit design systems. He was awarded "Innovator of ... He explored advanced analog signal processing during this period and received patent 3,898,375 for a special remotely ... Singleton then joined the RCA Computer Division where he became senior scientist of the division and focused his efforts on ...
Computer vision Digital signal processing / signal processing Control engineering[citation needed] Operations research ... An EyeTap video-based featureless projective motion estimation assisted by gyroscopic tracking for wearable computer mediated ... to use a GPU for digital signal processing (DSP) Analog signal processing Speech processing Digital image processing Video ... "Computer Vision Signal Processing on Graphics Processing Units", Proceedings of the IEEE International Conference on Acoustics ...
Processing of sound and music signals: This subfield focuses on audio signal processing techniques for the analysis, ... Assisted sound and music creation: This subfield focuses on the development of computer tools for assisting Sound design and ... In 1977 the Computer Music Journal was founded. The Center for Computer Research in Music and Acoustics (CCRMA) at Stanford ... In 1974, the research community established the International Computer Music Association and the International Computer Music ...
Methods International Journal of Computer Assisted Radiology and Surgery International Journal of Computer Processing of ... in Theoretical Computer Science Empirical Software Engineering Journal EURASIP Journal on Advances in Signal Processing ... The Collection of Computer Science Bibliographies Lists List of important publications in computer science List of computer ... Organization Theory Computational Intelligence Computational Mechanics Computer Aided Surgery The Computer Journal Computer Law ...
Journal of Computer Assisted Tomography. 8 (2): 306-316. PMID 6608535.. *^ Vardi, Y.; L. A. Shepp; L. Kaufman (1985). "A ... One of the disadvantages of PET scanners is their operating cost.[3] A similar imaging process to PET is single-photon emission ... As the timing resolution improves, the signal-to-noise ratio (SNR) of the image will improve, requiring fewer events to achieve ... Journal of Computer Assisted Tomography. 3 (6): 804-814. doi:10.1097/00004728-197903060-00018. ISSN 0363-8715. PMID 315970.. ...
If the fluorescent signal is weak, amplification of the signal may be necessary in order to exceed the detection threshold of ... Preparation and hybridization process - DNA[edit]. Scheme of the principle of the FISH Experiment to localize a gene in the ... Microfluidics-assisted FISH (MA-FISH) uses a microfluidic flow to increase DNA hybridization efficiency, decreasing expensive ... Q-FISH combines FISH with PNAs and computer software to quantify fluorescence intensity. This technique is used routinely in ...
In the F8 the control bus regulates the use of the data bus through the use of timing signals and state controls. The phi clock ... The computer needed to be electrically frugal. It needed characteristics that permitted easy interface to standard SSI and MSI ... The F3850 held the Central Processing Unit. The F3851 held a Read-Only Memory that contained a program called Fairbug. The ... The objective in providing the Fairbug routines in 1975 was to assist engineers in speeding up the creation of applications for ...
Computers and mobile technologyEdit. Access technology such as screen readers, screen magnifiers and refreshable Braille ... Such software can assist blind people with orientation and navigation, but it is not a replacement for traditional mobility ... It has been shown that blind echolocation experts use what is normally the "visual" part of their brain to process the echoes.[ ... Tactile paving and audible traffic signals can make it easier and safer for visually impaired pedestrians to cross streets. In ...
... revealed that her password-protected computer account shows activity on the home computer at 1:39 p.m., with activity on her ... The process has not been affirmed by a Daubert Test in the courts.[57] Dr. Vass' group also stated there was chloroform in the ... Anthony is not competent to aid and assist in her own defense".[87] The trial resumed on June 27 when the judge announced that ... Kristin Brewer also testified that her K9 partner, Bones, signaled decomposition in the backyard during a search in July 2008. ...
... to a wireless computer system it developed to assist nursing.[88] Hospitals. Four hospitals in Istanbul are named after ... There was no equipment to process food for the patients. " This frail young woman [...] embraced in her solicitude the sick of ... As Mark Bostridge has demonstrated, one of Nightingale's signal achievements was the introduction of trained nurses into the ... Nightingale was assisted in Paris by her friend Mary Clarke.[19] They were deployed about 295 nautical miles (546 km; 339 mi) ...
This may signal to others that the altruist is a valuable potential partner. It may also be a signal of interactive and ... is sensitive to subtle cues such as people being more helpful when there were stylized eyespots instead of a logo on a computer ... Volunteers assist Hurricane victims at the Houston Astrodome, following Hurricane Katrina.. Both indirect reciprocity and ... Costly signaling and the handicap principle.[13] Since altruism takes away resources from the altruist it can be an "honest ...
... a situation or process); spec. produce a computer model of (a process). (SOED mid-20th Century usage). If the AC machine were ... Back when there was no assisted locomotion other than that provided by animals had the concept of artificial locomotion been ... then that gives it a positive signal. What is necessary for that is imagination, ie generating all relevant possibilities for ... In computer the pulses go in and the pulses go out, we can interpret them as text, as images, as sounds etc. The same happens ...
All of these interfaces are digital; electronics on the drive process the analog signals from the read/write heads. Current ... Typically used with multiple-user computers running enterprise software. Examples are: transaction processing databases, ... still remain under development include heat-assisted magnetic recording (HAMR),[72][73] microwave-assisted magnetic recording ( ... Older interfaces had separate cables for data signals and for drive control signals. ...
All police vehicles are now equipped with computer keyboards, and, since 1973, air conditioning. ... claiming the hiring process is biased toward white males. The county has denied any intentional discrimination, and there have ... but the air unit was revived in 1968 with the purchase of four helicopters to assist in pursuits and medical evacuations. The ... two intersections equipped with traffic signals, an overpass, two tunnels, a simulated railroad crossing and 21 buildings. ...
Further signal processing such as clock recovery from data (CDR) performed by a phase-locked loop may also be applied before ... This type of communication can transmit voice, video, and telemetry through local area networks, computer networks, or across ... These repeaters convert the signal into an electrical signal, and then use a transmitter to send the signal again at a higher ... The process of communicating using fiber-optics involves the following basic steps: *creating the optical signal involving the ...
"Robustness Analysis of Sparsity Based Tumor Localization under Tissue Configuration Uncertainty". IEEE Signal Processing in ... Computer-controlled x-ray accelerators distribute precise radiation doses to malignant tumors or specific areas within the ... the use of assisted reproductive technologies and micromanipulation techniques might increase this risk.[27] ... The process involves inserting the x-ray tube through the anus into the rectum and placing it against the cancerous tissue, ...
Błażewicz, Jacek; Ecker, K.H.; Pesch, E.; Schmidt, G.; Weglarz, J. (2001). Scheduling computer and manufacturing processes (2 ... In these cases, special-purpose job scheduler software is typically used to assist these functions, in addition to any ... an operating system call or another form of signal. Thus the short-term scheduler makes scheduling decisions much more ... So, process A executes for 1 ms, then process B, then process C, then back to process A. ...
Children with CP may also have sensory processing issues.[18]` Skeleton[edit]. For bones to attain their normal shape and size ... Early use of augmentative and alternative communication systems may assist the child in developing spoken language skills.[32] ... and communication aids such as computers with attached voice synthesisers.[citation needed] A Cochrane review published in 2004 ... leading to hypertonia in the muscles signaled by those damaged nerves.[citation needed] ...
Flashing turn signals on the front, side, and rear of the vehicle indicate an intended change of position or direction. In the ... This certification process is one of three national (U.S.) examinations (the others are CLEP and CLMC) in the lighting industry ... ASSIST recommends: Guide to Light and Color in Retail Merchandising. 2010. Volume 8, Issue 1. Available online at: "Archived ... Uplighting (indirect) uses a diffuse surface to reflect light in a space and can minimize disabling glare on computer displays ...
He assisted in developing Virtual Earth.[16][17][18] He was also one of the co-founders of the Conference on Innovative Data ... The Benchmark Handbook: For Database and Transaction Processing Systems (1991). Morgan Kaufmann. ISBN 978-1-55860-159-8. ... nor was any signal detected from the boat's automatic Emergency Position-Indicating Radio Beacon. ... IEEE Computer Society Charles Babbage Award (1998). James Nicholas Gray (1944 - declared dead in absentia 2012) was an American ...
... would be to assist with processing once the orbiter was back at the Kennedy Space Center. ... All SSMEs had their own computers to regulate, monitor, and shut them down in case of trouble; the new system extends and ... S-Band Antenna Structural Assembly (SASA) relocation from P6 to P1, installation of S-Band Baseband Signal Processor and ... Endeavour (OV-105) was moved from the Orbiter Processing Facility, bay OPF-2 to the Vehicle Assembly Building on 2 July 2007.[ ...
... feature in computer word processing programs, which both help individuals with mobility impairments to complete tasks. ... Features that assist people with visual impairments include braille signs and tactile paving to allow a user with a cane to ... Accessible facilities[13] therefore extend to areas such as Braille signage, elevators, audio signals at pedestrian crossings, ... Accessibility - mass communication process of agenda-setting[edit]. Main article: Accessibility process of agenda-setting ...
... which converts fluctuating light signals into electrical signals, which can be electronically analysed. If a receiver is being ... The services carried out by Capita on behalf of the BBC include dealing with TV licence queries, processing TV licence ... Other technologies for receiving visual media, such as mobile phones and computers connected to the Internet, has led to ... we can respond and assist licence fee payers or correct inaccurate information as well as flag up customer complaints." Part of ...
Combined measurement with NIRS shows good correlation with both the oxy- and deoxyhemoglobin signal compared to the BOLD signal ... This process also produces one molecule of carbon monoxide for every molecule of heme degraded.[73] Heme degradation is one of ... This nitric oxide transport to peripheral tissues is hypothesized to assist oxygen transport in tissues, by releasing ... brain computer interface, urology (bladder contraction), neurology (Neurovascular coupling) and more. ...
Andrey Markov introduced[21] the notion of Markov chains (1906), which played an important role in stochastic processes theory ... An assessment by a commodity trader that a war is more likely can send that commodity's prices up or down, and signals other ... computer science, game theory, and philosophy to, for example, draw inferences about the expected frequency of events. ... risk assessment can be used as a statistical tool to calculate the likelihood of undesirable events occurring and can assist ...
The study was requested by the U.S. Congress and "enlisted NASA engineers with expertise in areas such as computer controlled ... a US federal grand jury in New York began the process of determining if there is probable cause to charge Toyota criminally for ... but may cause lockage of the steering wheels and will also disable the power steering and the brake assist.[82] ... converts the position of the pedal arm to an electronic signal which is sent to an electronic control unit (ECU). ...
... all new television devices that receive signals over-the-air, including pocket-sized portable televisions, personal computer ... To assist consumers through the conversion, the Department of Commerce through its National Telecommunications and Information ... Genachowski's predecessor Michael Copps called the process A huge transition with significant impact on consumers that was not ... VHF analog signals travel further than UHF signals, but watchable VHF digital signals appear to have a more limited range than ...
"Process and apparatus for the continuous preparation of cacao butter or similar fat-containing masses to be processed", ... Heating the working areas of the table-mill, an innovation that emerged in France in 1732, also assisted in extraction.[26] ... Chocolate tempering machines (or temperers) with computer controls can be used for producing consistently tempered chocolate. ... Antioxid Redox Signal. 2011;15(10):2779-2811. doi:10.1089/ars.2010.3697. ...
The emission data are computer-processed to produce 2- or 3-dimensional images of the distribution of the chemicals throughout ... Event-related optical signalEdit. Event-related optical signal (EROS) is a brain-scanning technique which uses infrared light ... There are many uses for MEG, including assisting surgeons in localizing a pathology, assisting researchers in determining the ... Such processing causes the involved area of the brain to increase metabolism and "light up" on the scan. One of the more ...
The signals are processed in these layers. First, the signals start as raw outputs of points in the rod and cone cells. Then ... Wong TY, Knudtson MD, Klein R, Klein BE, Meuer SM, Hubbard LD (2004). "Computer assisted measurement of retinal vessel ... Neural signals from the rods and cones undergo processing by other neurons, whose output takes the form of action potentials in ... Computers operate on a single floating point number that is essentially constant from each input pixel. (The computer pixel is ...
This process was so fast that Francis Barrallier (surveyor on early expeditions around the colony at Port Jackson) discovered ... using chemical signals from their urine, feces, and scent glands. Males scent mark more frequently than females, especially ... these habitats may have been assisted by their relationship with indigenous Australians.[13] ... "Computer simulation of feeding behaviour in the thylacine and dingo as a novel test for convergence and niche overlap" ...
C signal from the process blank measures the amount of contamination introduced during the preparation of the sample. These ... Researchers have studied other radioactive isotopes created by cosmic rays to determine if they could also be used to assist in ... its use was limited by the need to use mainframe computers to perform the calculations, but the technique has since been ... and a sample known as a process blank made from dead carbon that is processed into target material in exactly the same way as ...
The processes involved included EEG monitoring, ocular signaling, incorporation of reality in the form of red light stimuli and ... Evans, C.; Newman, E. (1964). "Dreaming: An analogy from computers". New Scientist. 419: 577-579.. ... Other prominent theories include those suggesting that dreams assist in memory formation, problem solving, or simply are a ... Zhang, Jie (2004). Memory process and the function of sleep (PDF) (6-6 ed.). Journal of Theoretics. Archived (PDF) from the ...
Strong hybridization signals from a given spot on the array identifies its sequence in the DNA being sequenced.[106] ... DNA sequencing is the process of determining the precise order of nucleotides within a DNA molecule. It includes any method or ... Matrix-assisted laser desorption ionization time-of-flight mass spectrometry, or MALDI-TOF MS, has specifically been ... "A strategy of DNA sequencing employing computer programs". Nucleic Acids Research. 6 (7): 2601-10. doi:10.1093/nar/6.7.2601 ...
It was shown that animal hypnosis had very long-lasting trace processes, i.e., hypnotic structure of coherent relations of ... Perspective-taking and personal distress are argued to play contrasting roles in empathic processing, with perspective-taking ... A coherent EEG analysis in the trace processes of animal hypnosis in rabbits]. ...
Signal Processing, Computer-Assisted* ... These methods are sensitive to signal heterogeneity and outlier ...
Signal Processing, Computer-Assisted • Strepsirhini • Swine • Tooth Crown • Tooth Wear • Tupaia • Wavelets (Mathematics) • X- ... Computer-Assisted • Image Processing, Computer-Assisted • Industry • Inverse problems • Machine learning • Magnetic Resonance ... Ieee Transactions on Image Processing : a Publication of the Ieee Signal Processing Society, vol. 26 no. 2 (February, 2017), pp ... Ieee Transactions on Image Processing : a Publication of the Ieee Signal Processing Society, vol. 26 no. 1 (January, 2017), pp ...
... time-frequency analysis of atrial signal has been applied to describe fibrillatory frequency trends. Recently, temporal changes ... Signal Processing, Computer-Assisted ... time-frequency analysis of atrial signal has been applied to ...
Signal Processing, Computer-Assisted • Strepsirhini • Swine • Tooth Crown • Tooth Wear • Tupaia • Wavelets (Mathematics) • X- ... Computer-Assisted • Image Processing, Computer-Assisted • Industry • Inverse problems • Machine learning • Magnetic Resonance ... Proceedings of the Ieee Computer Society Conference on Computer Vision and Pattern Recognition (December, 2018), pp. 2743-2751 ... Ingrid Daubechies, James B. Duke Professor of Mathematics and Professor of Electrical and Computer Engineering. Contact Info:. ...
2) Multimedia Signal Processing (ex. Speech, Audio, Text, Image and Video Signal Processing) ... Demo: Voice Assisted Car Navigation System Speech is the most natural, powerful and universal media for human-machine/computer ... Therefore, we would like to build a computer-assisted language learning system that could simultaneously detect pronunciation ... structure and training algorithm that can successfully separate wanted signals and noises. ...
Signal Processing, Computer-Assisted. Statistics, Nonparametric. Chemical. Reg. No./Substance: 9002-72-6/Growth Hormone ...
Signal Processing, Computer-Assisted. Stroke Volume*. Time Factors. Ventricular Function, Left*. Ventricular Pressure*. ...
Audio Signal Processing Computational Lexicography Computational Linguistics Computational Morphology Computer Assisted ... Robust Semantic Processing Speech Analysis Speech Pathology Speech Recognition Speech Signal Processing Speech Technologies ... Spoken Dialogue Processing Spoken Dialogue Systems Tokenisation Vector Quantization Word meaning Photograph. Description or CV ... Natural Language Processing Natural Language Semantics Naturalistic Spoken Language Neural network Neural Networks Parsing ...
Computer-Assisted Prototyping of Advanced Microsystems. Section 2: Digital Signal Processing. 1.. Digital Signal Procesing ...
Signal Processing, Computer-Assisted. 1. 2007. 1619. 0.010. Why? Treatment Outcome. 2. 2017. 57271. 0.010. Why? ...
Signal Processing, Computer-Assisted. 1. 2004. 1611. 0.010. Why? Research Design. 1. 2011. 5619. 0.010. Why? ...
BIIP - Biomedical Imaging & Image Processing. BSP - Biomedical Signal Processing. CSPE - Cardiopulmonary Systems. ... Call for Participation in IEEE P2731, Standard for a Unified Terminology for Brain-Computer Interfaces ...
Wavelet-based signal and image processing � Wavelet-based numerical computation � Wavelets in applied mathematics � Wavelets ... Computer-assisted proofs and verification for differential equations � Interval analysis and its applications � Industrial and ... Evaluation Process Papers will be evaluated for originality, significance, clarity, and soundness. Per ITNG policy, except for ... NLPIR--ACM, Ei and Scopus 2019 ACM2019 3rd International Conference on Natural Language Processing and Information Retrieval ( ...
... image processing), biomedical engineering [algorithm(s), signal processing, signal processing computer assisted], and clinical ...
... materials but also through creating completely new use cases made possible by technological improvements in signal processing ... The working prototype of StudyIntonation Computer-Assisted Pronunciation Training (CAPT) system is a tool for mobile devices, ... This article contributes to the discourse on how contemporary computer and information technology may help in improving foreign ... Speech Processing for Language Learning: A Practical Approach to Computer-Assisted Pronunciation Teaching by Natalia Bogach ...
Signal Processing; Computer-Assisted, Tachycardia/*physiopathology/surgery National Category Medical and Health Sciences ... Temporal signal averaging of the surface QRS (VI + V3 + V5) was performed in 16 patients with arrhythmogenic right ventricular ... 429±942 fiV, P ,0001), and the root mean square voltage of the signals in the terminal 40 and 50 ms of the FQRS (RMS40 and ... Quantitative analysis of the signal-averaged QRS in patients with arrhythmogenic right ventricular dysplasia. Blomström- ...
International Journal of Computer Assisted Radiology and Surgery" on DeepDyve, the largest online rental service for scholarly ... Peyré G (2011) The numerical tours of signal processing. Comput laparoscopic videos of the liver. In: SPIE, vol 10135, pp ... Computer assisted minimally invasive surgery: Is medical computer vision the answer to improving laparosurgery? ... International Journal of Computer Assisted Radiology and Surgery. , Volume 13 (6) - May 7, 2018 ...
Signal Processing, Computer-Assisted, Time Factors, Time Perception, Acoustic properties, Acoustic waves, Adaptive systems, ...
Image Interpretation, Computer-Assisted/methods*. *Signal Processing, Computer-Assisted*. Minor. *Brain/anatomy & histology ... showing that asymmetric k-space coverage in widely used Partial Fourier acquisitions results in locally differing signal loss ... showing that asymmetric k-space coverage in widely used Partial Fourier acquisitions results in locally differing signal loss ...
A processing unit (201) receives signals from the micro-sensor elements (152, 154) of the network. The processing unit (201) ... has a model generator (216) producing a model of the selected surface of the object from the signals of the network of ... Computer Assisted Surgery (CAS) such as hip joint resurfacing surgery and, more precisely, to a method for assisting hip joint ... A processing unit (201) receives signals from the micro-sensor elements (152, 154) of the network. The processing unit (201) ...
IEEE transactions on signal processing 57 (2009): 9, pp. 3347-3360.. Shimitsu, Shohei; Hoyer, Patrik O; Hyvärinen, Aapo.. ... Evaluating methods for computer-assisted stemmatology using artificial benchmark data sets. Literary and linguistic computing ... Tampere International Center for Signal Processing, 2009.. Ikonen, Marko.. Ohjelmistotuotantoprojektin tapaustutkimus: ... 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing 4 pp. ...
Cardiotocography, computer-assisted signal processing, deceleration, fetal monitoring, interobserver variation National ... Medical Image Processing Identifiers. urn:nbn:se:kth:diva-227232 (URN)000430280500135 () ... computer analysis, fetal heart rate monitoring, fetal scalp blood sampling, hypoxia, intrapartum, lactate, short-term variation ... The outcome measures were bias in seconds (width), beats per minute (depth), and beats (area) between computer and observers ...
The sequence of heartbeats is also processed to detect and diagnose heart murmurs by adjusting a murmur count threshold ... A method for assisting in the diagnosis of heart murmurs. The method calculates a normalized measure of mid-range energy for at ... which instruct the general purpose computer to perform step of processing the audio signal instruct the computer to process the ... Computer-assisted detection of systolic murmurs associated with hypertrophic cardiomyopathy - Google Patents. Computer-assisted ...
"for contributions in nonlinear signal processing". Website. B Wayne Bequette. Rensselaer Polytechnic Institute. "for ... "for contributions to medical robotics and computer-assisted intervention". Patrick French. Tu-Delft-Delft University of ... "for contributions to computer-aided biomedical imaging and diagnosis". Anthony Guiseppi-Elie. Clemson University. "for ... "for contributions to genomic signal analytics and image-based tissue characterization". Chenyang Xu. Siemens Technology-to- ...
... digital signal processing and computer-assisted composition. One of the most striking developments in this encounter has been ... This latter type of process ranges from the interactive partnership that might be called computer-assisted composition, through ... The computer is central to both types of process. However, as in any close relationship, each of the partners may be changed by ... This is obtained by recording a short burst of a broadband signal as it is processed by the reverberant characteristics of the ...
Measures assessing therapeutic process and outcomes such as the Assessment for Signal Clients (ASC). ... Evidence-based, nationally used, computer assisted surveys such as Lamberts Outcomes Quotient (OQ) to assess symptom level and ... the formulation of treatment process, and the recognition of therapy as an intrapsychic/interactive process between patient and ... The application process is quick and easy, but if you have. any questions, our admissions counselors are here to help.. Apply ...
Computer Simulation ; Drosophila melanogaster ; Female ; Homeodomain Proteins ; Signal Processing, Computer-Assisted ; Signal- ... Bicoid signal extraction with a selection of parametric and nonparametric signal processing techniques.pdf - Published Version ... Bicoid signal extraction with a selection of parametric and nonparametric signal processing techniques. Genomics Proteomics ... Bicoid signal extraction with a selection of parametric and nonparametric signal processing techniques. ...
Signal Processing, Computer-Assisted ; Size Perception ; Vision Disparity ; Visual Acuity ; Visual Fields ; Visual Perception ... Experiment 1 demonstrated that PM does not increase the amount of text that is processed, supporting an attentional-based ...
Signal Processing, Computer-Assisted. Honors and Awards. Winner of NASA-Innocentive Challenge on Noninvasive Intracranial ... Bai Y, Sow D, Vespa P, Hu X. Real-Time Processing of Continuous Physiological Signals in a Neurocritical Care Unit on a Stream ... Our teams core expertise lies in various physiological signal modeling and processing and developing machine learning models. ... Yang L, Zhao M, Peng C, Hu X, Feng H, Ji Z. Waveform descriptor for pulse onset detection of intracranial pressure signal. Med ...
  • Computers and humans can both include extra space, other things not needed, because of not knowing the language and thus not knowing what is significant. (
  • This article contributes to the discourse on how contemporary computer and information technology may help in improving foreign language learning not only by supporting better and more flexible workflow and digitizing study materials but also through creating completely new use cases made possible by technological improvements in signal processing algorithms. (
  • Furthermore, since we can pre-process the CT scan before surgery, the proposed method runs faster than current algorithms. (
  • Its focus is on biomedical integrative research, including mathematical and computational models, algorithms and systems for computer-aided diagnosis and treatment of health problems. (
  • This volume unifies and extends the theories of adaptive blind signal and image processing and provides practical and efficient algorithms for blind source separation: Independent, Principal, Minor Component Analysis, and Multichannel Blind Deconvolution (MBD) and Equalization. (
  • Moreover, Fusion exploits graphic processing technology and the latest algorithms for real-time super-resolution imaging, signalling the future in computer-assisted microscopy. (
  • Mr. Jacobs' research work included mathematical modeling of evoked potentials, analog circuit design, and image processing. (
  • Containing over 1400 references and mathematical expressions Adaptive Blind Signal and Image Processing delivers an unprecedented collection of useful techniques for adaptive blind signal/image separation, extraction, decomposition and filtering of multi-variable signals and data. (
  • As a result, the way in which we visualize the white matter tracts can be very different based on the different mathematical equations used in the process of modeling. (
  • Aubert, G., Kornprobst, P.: Mathematical Problems in Image Processing: Partial Differential Equations and the Calculus of Variations. (
  • The involvement and the regulation of the ion channels involved in mediating ion fluxes during an AP will be intensively investigated, resulting finally in a mathematical model of electrical signalling in plants. (
  • The proposal will bring together three groups with expertise in (i) molecular electrophysiology of plant ion channels, (ii) electrophysiology, especially in relation to electrical signalling and (iii) computer-assisted mathematical modelling of plant biological processes, along with a returning European electrophysiologist with expertise in ion transport. (
  • Myron Brown, Gordon Christie, Kevin Foster, Shea Hagstrom and Rai Munoz-Abujder for "Learning Geocentric Object Pose in Oblique Monocular Images," published in the Proceedings of Computer Vision and Pattern Recognition. (
  • The field can also include topics such as software engineering, digital signal processing, data compression, pattern recognition, and the Internet. (
  • To examine the effect of noise on coherence estimation, we systematically varied the noise by changing its variance relative to the signal and estimated the coherence between channel X and Z in the above simulation. (
  • While the amount of noise derived from this particular simulation is empirical, it indicates that the amount of noise should be four orders of magnitude less than the signal. (
  • The U.S. Defense Department is developing a new simulation environment to provide readily available, operationally valid, computer-assisted instruction for commanders in chief. (
  • Known as the joint simulation system, the assemblage will train the commanders, their components and commands, other joint organizations, and the services and agencies in computer-assisted joint exercises. (
  • The joint simulation system, or JSIMS, is a single, seamlessly integrated joint synthetic battlespace that provides a common environmental and operational picture of the battle area, an effective combat adjudication process, and a robust after-action review capability. (
  • At maturity, the technology will allow globally dispersed forces-including deployed U.S. forces, research and development test facilities and ranges, defense educational institutions, Reserve components, U.S. government agencies, allies and multinational forces-to participate simultaneously in multiechelon, simulation-assisted training events. (
  • For the preoperative planning, a computer simulation was developed that allows the quantification of the malunion by comparing the 3-d surface model of the impaired bone with the contralateral anatomy. (
  • Well equipped, modem laboratories for signal and data compression, real time digital simulation, microelectronics, VLSI design, and parallel processing assist in the course work. (
  • Improving the Centre For Medical Image Computing, University College London, London, UK robustness, accessibility and reliability of image-guidance Division of Surgery and Interventional Science, University College London, London, UK 123 948 International Journal of Computer Assisted Radiology and Surgery (2018) 13:947-956 systems could potentially increase the number of patients of an additional CT or MRI scan immediately before the benefiting from minimally invasive surgeries. (
  • International Congress and Exhibition on Computer Assisted Radiology and Surgery accepted. (
  • These methods are sensitive to signal heterogeneity and outlier sources. (
  • Evaluating methods for computer-assisted stemmatology using artificial benchmark data sets. (
  • A class of contemporary methods of sound synthesis and signal processing known as time-frequency models that emerged over the last two decades has their basis at this quantum level such that changes in a signal's time domain result in spectral alterations and vice versa. (
  • This paper seeks to explore the applicability of a variety of signal processing techniques at extracting bicoid expression signal, and whether these methods can outperform the current model. (
  • Advanced signal processing methods such as machine learning will analyze the data to allow us to discriminate between different bone tissues. (
  • However, whereas applications (1) and (3) are open-ended, and highly specialized according to the agendas/methods of particular research labs, application (2) - computer-assisted data and signal processing, including statistical analyses - involves skills that are more universally applicable. (
  • We describe a new approach, the constrained adaptive beamformer (CAB), which builds on classic array processing methods. (
  • The inherent nonlinearity and non-stationarity of physiological processes limits the methods based on simpler underlying assumptions to point out the pathway to a more comprehensive understanding of their behavior and relation with certain diseases. (
  • This review aims to provide a sketchy overview of the methods derived from different disciplines lucubrating to the complexity of bio-signals in the field of epilepsy monitoring. (
  • The aim of the present work was to use two methods working in the time domain, an independent component analysis algorithm (FastICA) and an adaptive maternal beat subtraction technique (AMBS), for the retrieval of fetal cardiac signals from fMCGs. (
  • Depicting several applications of different methods to analyze NLO signals. (
  • The study is based on EEG signals from six full term infants who have suffered from perinatal asphyxia, and the methods have been trained with reference data classified by an experienced electroencephalographer. (
  • A method for assisting in the diagnosis of heart murmurs. (
  • Dr. El-Baz is an expert in the fields of bioimaging modeling and computer assisted diagnosis systems. (
  • Since its establishment in 1972, the IBM Haifa Research Lab described itself as trying to be responsive to both the research goals of IBM and the specific needs of Israeli industry - from medical non-invasive diagnosis projects, to computer-controlled irrigation, scheduling El Al flight crews, and Hebrew voice recognition. (
  • PhysioBank, PhysioToolkit, and PhysioNet: Components of a New Research Resource for Complex Physiologic Signals. (
  • Noise-assisted instantaneous coherence analysis of brain connectivity. (
  • Characterizing brain connectivity between neural signals is key to understanding brain function.In our method, fully data-driven MEMD, together with Hilbert transform, is first employed to provide time-frequency power spectra for neural data.Furthermore, a statistical randomization procedure is designed to cancel out the effect of the added noise. (
  • Characterizing brain connectivity between neural signals is key to understanding brain function. (
  • Brain-computer interfaces ( BCI ) or brain-neural computer interfaces ( BNCI ) are technologies used in successful science-fiction movies in the past. (
  • patients in locked-in state can paint without any muscular activity, solely by having their brain signals processed. (
  • Via a BNCI , the sensor system (a cap with sensors that you wear on your head) detects your brain activity and transmits your brain signals via the internet to the avatar, which then acts according to your orders . (
  • and (3) conducting computer-assisted simulations of natural systems, e.g., functional brain circuits. (
  • Intel also will demonstrate a computer that is able to recognize and respond to brain waves when a user thinks about controlling a particular device. (
  • His major interests are in Signal and Image Processing, Visualization and Biophysics for better healthcare design, delivery and therapy. (
  • Its research activities include medical data computing and computer assisted interventions. (
  • These research areas are applied electrostatics and electromagnetics, biomedical systems, computer-assisted medical interventions, communication systems and data networking, microsystems and digital signal processing, power systems engineering, robotics and control and software engineering. (
  • Computer simulations are first performed to verify the effectiveness of NAIC. (
  • It has a team of 60 full time researchers working on computational simulations, medical image analyses, signal processing, machine learning, computer-assisted surgery and biomedical electronics. (
  • Engineering of Computer-Based Systems, IEEE International Conference on the. (
  • In IEEE computer information systems and industrial management applications (CISIM) . (
  • A number of different sensor systems are exemplified, leak detection systems, liquid sensing, the Biacore instrument, glucose sensors, computer screen assisted technology. (
  • I am interested in the engineering of complex biological systems through synthetic biology to achieve programmable information and energy processing. (
  • The Challenge of Mesh Routing in Ubiquitous Sensor Networks In 22nd International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC) . (
  • Today, its contributions play a role in emerging technologies such as IBM's eLiza project for self-managing computer systems, iSCSI for the IBM TotalStorage IP Storage 200i, the InfiniBand high bandwidth network protocol, Enterprise Storage Systems, and information retrieval engines. (
  • 3/ Adversarial attacks: ASV systems to assist the spoofed speech. (
  • They learn to use tools such as computer languages and software, standardized data related to computer systems and equipment, optimization programs, electronics components, networks, and control equipment. (
  • Computer Engineering represents a combination of Electrical Engineering (as it relates to the design of computer hardware and engineering systems that interact with computers) and Computer Science (as it relates to software design). (
  • Rehabilitation systems for physically disabled patients: A brief review of sensor-based computerised signal-monitoring systems. (
  • Nizam Uddin Ahamed NU, Sundaraj K, Ahmad B, Rahman M, Ali MA, Islam MA, Palaniappan R. Rehabilitation systems for physically disabled patients: A brief review of sensor-based computerised signal-monitoring systems. (
  • This brief review addresses the existing systems and challenges and provides future recommendations on computer- and biosensor-assisted rehabilitation systems for physically disabled patients. (
  • We further list the types of sensors, technical issues, and different software and hardware technologies that are currently used in rehabilitation systems to make the whole process dynamic and real-time. (
  • We found that 54 types of biosensors have been used for real-time and computer-assisted rehabilitation systems. (
  • Physio logical sensors are one of the fundamental parts of biosignal processing, and are thus important in automatic rehabilitation systems because they offer considerable advantages in the clinical and biomedical industry, such as specificity, small size, faster response, and low cost [ 8 ]. (
  • What do electrical and computer systems engineers do? (
  • Monash will give you the hands-on training and theoretical insight you need for an exciting future as an electrical and computer systems engineer. (
  • As an electrical and computer systems engineer, you can design and develop digital products such as smartphones, virtual reality systems or computer games, or maybe robotic medical devices to assist in surgery and rehabilitation. (
  • Energy diagrams of linear and nonlinear optical process. (
  • Bicoid signal extraction with a selection of parametric and nonparametric signal processing techniques. (
  • We evaluate the use of six different powerful and widely-used models representing both parametric and nonparametric signal processing techniques to determine the most efficient method for signal extraction in bicoid. (
  • I engineered autonomous and programmable biosensors integrating multiplexed pathological biomarker detection and complex biological signal processing as intelligent diagnostic devices. (
  • 2. Engineer novel biocomputing devices that solve complex problems and process/interface biological information at the microscale. (
  • In short, a biosensor converts a biological response into an electrical signal. (
  • IEEE Computer , 37 (8), 41-49. (
  • In IEEE international conference on computer communications (INFOCOM) . (
  • Proceedings eighth IEEE international conference on computer vision. (
  • Proceedings Third IEEE Workshop on Applications of Computer Vision. (
  • An Analysis of the Heterogeneity and IP Packet Reordering Over Multiple Wireless Networks In IEEE Symposium on Computers and Communications (ISCC) . (
  • A Network-Layer Proxy for Bandwidth Aggregation and Reduction of IP Packet Reordering In The 34rd Annual IEEE Conference on Local Computer Networks (LCN) . (
  • A Robust Model-Based Approach to Indoor Positioning Using Signal Strength In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) , Edited by P. Friedel , H. Aghvami , M. Dohler and A. Sibille . (
  • 360] N. Alamdari, F. Saki, A. Sehgal, and N. Kehtarnavaz, An unsupervised noise classification smartphone app for hearing improvement devices, to appear in Proceedings of IEEE Signal Processing in Medicine and Biology Symposium, Dec 2017. (
  • 356] N. Dawar and N. Kehtarnavaz, Continuous detection and recognition of actions of interest among actions of non-interest using a depth camera, Proceedings of IEEE International Conference on Image Processing, Beijing, China, September 2017. (
  • 355] F. Saki, and N. Kehtarnavaz, Real-time unsupervised classification of environmental noise signals, IEEE Trans. (
  • 352] A. Bhattacharya, A Sehgal, and N. Kehtarnavaz, Low-latency smartphone app for real-time noise reduction of noisy speech signals, Proceedings of IEEE International Symposium on Industrial Electronics, Edinburgh, Scotland, June 2017. (
  • 351] N. Dawar, C. Chen, R. Jafari, and N. Kehtarnavaz, Real-time continuous action detection and recognition using depth images and inertial signals, Proceedings of IEEE International Symposium on Industrial Electronics, Edinburgh, Scotland, June 2017. (
  • IEEE Trans Image Process, 19 (5). (
  • This link will be achieved by means of a hardware/software architecture based on (a) a network of different wearable distributed interfaces working in synergy, orchestrated by an (b) adaptive controller that interprets and fuses bio-signals and hand sensor signals exchanging therefore action and perception information between the HAD and the patient. (
  • 365] S. Saki, A. Bhattacharya, and N. Kehtarnavaz, Real-time Simulink implementation of noise adaptive speech processing pipeline of cochlear implants, to appear in Speech Communication Journal, 2018. (
  • Time course reconstruction of fetal cardiac signals from fMCG: independent component analysis versus adaptive maternal beat subtraction. (
  • It was shown that 'animal hypnosis' had very long-lasting trace processes, i.e., hypnotic structure of coherent relations of electrical activity in the cerebral cortex was maintained during several days. (
  • Mr. Jacobs previously served as an adjunct faculty member in the Department of Electrical and Computer Engineering at Villanova University. (
  • At the IBM Haifa Research Lab, 25% of the technical staff have doctoral degrees in computer science, electrical engineering, mathematics, or related fields. (
  • Computer Engineering students have a common first year with other engineering disciplines, then study most of the core material in the same classes as Electrical Engineering students. (
  • Technical electives can be selected from a large group of courses in computer engineering, computer science, and electrical engineering. (
  • Research in Electrical and Computer Engineering Publications falls into eight broad and interlaced areas. (
  • Electrical signals such as action potentials (APs) are by far the fastest signalling mechanisms in plants. (
  • Despite their importance, huge questions remain about the mechanisms behind electrical signalling. (
  • This project will therefore bring together ion transport mechanisms and electrical signalling in Arabidopsis. (
  • Theoretical computer science 410 (2009), pp. 5354-5364. (
  • Theoretical computer science 410 (2009), pp. 2999-3005. (
  • With solid theoretical foundations and numerous potential applications, Blind Signal Processing (BSP) is one of the hottest emerging areas in Signal Processing. (
  • 364] C-H. Chang and N. Kehtarnavaz, A computationally efficient pipeline for 3D point cloud reconstruction from video sequences, to appear in Proceedings of SPIE Conference on Real-Time Image and Video Processing, April 2018. (
  • 363] F. Saki and N. Kehtarnavaz, Real-time hierarchical classification of sounds signals for hearing improvement devices, to appear in Applied Acoustics Journal, vol. 132, pp. 26-32, March 2018. (
  • On the application of the auto mutual information rate of decrease to biomedical signals. (
  • The DTI-data obtained were processed using a FDA approved surgical navigation system program which uses a straightforward fiber-tracking approach known as fiber assignment by continuous tracking (FACT). (
  • Computer translators such as Babelfish and Google Translate work best when they have a lot of translation data to work from, says University of Maryland professor Philip Resnik. (
  • This paper provides an overview of the data mining process, as well as its benefits and drawbacks, as well as data mining methodologies and tasks. (
  • It can be thought of as computer-assisted exploratory data analysis of massive, complex data sets from a statistical standpoint. (
  • The investigation includes sample preparation, sample analysis, displacing fluid formation, rheological properties test, foam stability test and electrokinetic signal measurement by using NI Data Acquisition System (NIDAS). (
  • Keywords Image guidance · Laparoscopic liver surgery · Global registration · Shape matching · Surface descriptors · Computer-assisted surgery Introduction tion, constrained vantage point, limited field of view, poor haptic feedback and occluded anatomy [1]. (
  • Image guidance Minimally invasive surgery offers the patient major bene- aims to assist the clinicians in localising and tracking sub- fits over open surgery, including less trauma, less pain and surface structures such as abnormalities or major vessel trees. (
  • 4. The model generator system according to claim 1, wherein the object is a bone element and the model generator system is used in computer-assisted surgery. (
  • Prof. Mirmehdi has been involved in computer vision research for 22 years, particularly in the areas of medical imaging, quality inspection, and scene understanding. (
  • In this sense, screening seeks to help in cancer diagnostic process before symptoms became evident in a person, different imaging techniques are employed for this purpose (Mammography, Ultrasonography, X-ray, Magnetic Resonance, etc). (
  • (2) Multimedia Signal Processing (ex. (
  • The essence of the research stems in this country encumbers the USBM with this research from the need to use sensors and computers for much of responsibility. (
  • 1] Federico Alegre, Ravichander Vipperla, Nicholas Evans and Benoît Fauve, 'On the vulnerability of automatic speaker recognition to spoofing attacks with artificial signals,' in Proc. (
  • During the last half century, the computer has become the central site of this research, including sound synthesis, digital signal processing and computer-assisted composition. (
  • Assuming that all components are readily available, a team of several researchers experienced in optics, electronics, digital signal processing, microfluidics, mechatronics, and flow cytometry can complete this protocol in ~3 months. (
  • The present invention concerns computer assisted detection of heart sounds and, in particular, the detection of systolic murmurs. (
  • The research findings could lead to a new approach in monitoring a FAWAG process. (
  • Biostatistical Analysis and Wavelet Analysis are widely utilized in various fields such as image processing, statistical learning, medical informatics, and so on. (
  • Shahriari Y, Fidler R, Pelter M, Bai Y, Villaroman A, Hu X. Electrocardiogram Signal Quality Assessment Based on Structural Image Similarity Metric. (
  • Justin Joyce for "Leveraging Tools from Autonomous Navigation for Rapid, Robust Neuron Connectivity," published in Medical Image Computing and Computer Assisted Intervention - 2020. (
  • The computer supplies a signal for displaying the position of the tool in the image reference system R i on a monitor and for controlling the position and shifting of said tool as a function of the control signals from the control unit. (
  • Signal Processing: Image Communication 27, no. 4 (2011): 312-328. (
  • 359] (Editorial) M. Carlsohn and N. Kehtarnavaz, Journal of Real-Time Image Processing, vol. 13, no. 4, pp. 665-667, Dec 2017. (
  • 358] R. Pourreza-Shahri and N. Kehtarnavaz, Automatic exposure selection and fusion for high-dynamic-range photography via smartphones, Journal of Signal, Image and Video Processing, vol. 11, pp. 1437-1444, Nov 2017. (
  • 354] (Editorial) N. Kehtarnavaz and M. Carlsohn, Journal of Real-Time Image Processing, vol. 13, no. 2, pp. 245-247, June 2017. (
  • It is regularly the first step in the process of image analysis that uses histograms to classify the pixels in the image. (
  • Image Process. (
  • In the new era of digital pathology, advanced image analysis can objectively, consistently, and quantitatively characterize the different components of the tumor and how they spatially interact, and as a result assist pathologists in tasks such as tumor grading ( 2 ). (
  • Therefore, we would like to build a computer-assisted language learning system that could simultaneously detect pronunciation errors, speech prosody deviations and dialogue act mistakes. (
  • 7. The model generator system according to claim 4, wherein the surface digitizing tool is used with a bone element having a generally semi-spherical shape, and the processing unit has a center calculator for receiving the model of the selected surface of the bone element and determining a center of the bone element from said model. (
  • Computer-assisted microsurgery equipment, of the type including an articulated tool support, with one of the ends being integral with a fixed reference system Rc. (
  • The system will improve efficiency by incorporating tools and automated routines that facilitate responsive design, planning, preparation processes for training events, event execution, and a timely and relevant after-action review. (
  • The first and second semesters form a self-contained Postgraduate Diploma course which provides the necessary music, video, computational and technological skills to allow creative individuals to engage in computer-assisted audio-visual composition and production, engage in audio signal processing system design, apply software tools for the music and media industries and/or enter the arena of media production. (
  • It has a telemonitoring and home support system to allow and assist BNCI home use. (
  • The CMR paradigm led hearing scientists to view the auditory periphery as a multi-channel signal processing system ultimately impacting the development of processing strategies for hearing aids and cochlear implants. (
  • computer-assisted mining system research program was thus conceived. (
  • The Bureau's research on a computer- the machine control because the safest position for the enhanced mining system under its Equipment Safety machine operator is not within a direct line of sight of the division of the Health and Safety Research program, machine. (
  • 2 College of Computer Science and Information System, Najran University, Kingdom of Saudi Arabia. (
  • The review focused on 36 consolidated studies that were found using the following keywords: rehabilitation system, sensor, and computer. (
  • A system for biosignal based device applications contains a biosignal sensor (e.g. biosensor) or multiple biosensors (e.g. multiple biosensors for EEG detection, or multiple biosensors that can each detect different types of biosignals), a biosignal processing unit, the apparatus (hardware), and a software application(s) that operate the biosignal information for different applications [ 6 ]. (
  • This is the timing of a child's processing system, which helps them recognize differences in speech sounds (such as mat versus pat). (
  • Furthermore, the AMIF rate of decrease (AMIFRD) is correlated with signal entropy. (
  • There are several supported mechanisms that are used to actively monitor the rehabilitation process in real time. (
  • Ding Q, Bai Y, Erol YB, Salas-Boni R, Zhang X, Hu X. Robust QRS peak detection by multimodal information fusion of ECG and blood pressure signals. (
  • Prior to attending law school, he worked as an engineer on technologies including sonar signal processing, biomedical signal processing and instrumentation, and computer-assisted tomography. (
  • Acoustics, Speech and Signal Processing, 2007. (
  • Our team's core expertise lies in various physiological signal modeling and processing and developing machine learning models. (
  • This research project aims to reduce errors in the process by developing an objective and sensor-based method to assist practitioners in conducting the drilling process. (
  • The concept of establishing a research center for IBM in Israel was the idea of the late David Cohen, then general manager of IBM Israel, and the late Prof. Josef Raviv, an Israeli computer scientist who headed a research group at the IBM T.J. Watson Research Center in New York City. (
  • In the course, the MATLAB ecosystem serves as a vehicle for learning computer programming concepts that are useful in the context of applications of computer programming to scientific research. (
  • This paper in the face area with them, thus greatly reducing, if not reports progress of the research that is developing and will eliminating, their exposure to dust, noise, machine and demonstrate the technologies required for the computer- geological hazards. (
  • Firms such as research organizations, consultants, computer software and hardware companies, equipment and product manufacturers, and telecommunications utilities hire computer engineers. (
  • Computer Engineering professors are award winners in teaching, research, community and professional areas. (
  • With a background in computer vision, machine learning or related fields, the successful candidate will contribute to research and development in the context of automatic analysis of surgical video content. (
  • The candidate should have a PhD degree and a strong background and experience in computer vision and machine learning with a proven record in research. (
  • Our method will analyze the sounds generated during implant drillings to monitor the process and recognize different bone tissues, providing real-time feedback on whether the practitioner is taking the correct line. (
  • files of the database) include at least 3 EEG channels (F3 or F4, C3 or C4 and O1 or O2, referred to A1 or A2), EOG (2 channels), EMG of the submentalis muscle, bilateral anterior tibial EMG, respiration signals (airflow, abdominal and thoracic effort and SaO2) and EKG. (