Computer-based representation of physical systems and phenomena such as chemical processes.
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.
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)
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 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.
Sequential operating programs and data which instruct the functioning of a digital computer.
Application of computer programs designed to assist the physician in solving a diagnostic problem.
The rate dynamics in chemical or physical systems.
The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds.
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.
Models used experimentally or theoretically to study molecular shape, electronic properties, or interactions; includes analogous molecules, computer-generated graphics, and mechanical structures.
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.
A self-learning technique, usually online, involving interaction of the student with programmed instructional materials.
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.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
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.
The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
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.
Integrated set of files, procedures, and equipment for the storage, manipulation, and retrieval of information.
Elements of limited time intervals, contributing to particular results or situations.
Purine or pyrimidine bases attached to a ribose or deoxyribose. (From King & Stansfield, A Dictionary of Genetics, 4th ed)
Computers whose input, output and state transitions are carried out by biochemical interactions and reactions.
Data processing largely performed by automatic means.
The relationship between the dose of an administered drug and the response of the organism to the drug.
The characteristic three-dimensional shape of a molecule.
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.
Text editing and storage functions using computer software.
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).
The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.
Computer-based systems for input, storage, display, retrieval, and printing of information contained in a patient's medical record.
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).
A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.
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.
The process in which substances, either endogenous or exogenous, bind to proteins, peptides, enzymes, protein precursors, or allied compounds. Specific protein-binding measures are often used as assays in diagnostic assessments.
The molecular designing of drugs for specific purposes (such as DNA-binding, enzyme inhibition, anti-cancer efficacy, etc.) based on knowledge of molecular properties such as activity of functional groups, molecular geometry, and electronic structure, and also on information cataloged on analogous molecules. Drug design is generally computer-assisted molecular modeling and does not include pharmacokinetics, dosage analysis, or drug administration analysis.
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.
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.
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.
A potent, long-acting synthetic SOMATOSTATIN octapeptide analog that inhibits secretion of GROWTH HORMONE and is used to treat hormone-secreting tumors; DIABETES MELLITUS; HYPOTENSION, ORTHOSTATIC; HYPERINSULINISM; hypergastrinemia; and small bowel fistula.
A 14-amino acid peptide named for its ability to inhibit pituitary GROWTH HORMONE release, also called somatotropin release-inhibiting factor. It is expressed in the central and peripheral nervous systems, the gut, and other organs. SRIF can also inhibit the release of THYROID-STIMULATING HORMONE; PROLACTIN; INSULIN; and GLUCAGON besides acting as a neurotransmitter and neuromodulator. In a number of species including humans, there is an additional form of somatostatin, SRIF-28 with a 14-amino acid extension at the N-terminal.
Computers that combine the functions of analog and digital computers. (Sippl, Computer Dictionary, 4th ed)
Theoretical representations that simulate the behavior or activity of chemical processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
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.
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.
The interaction of two or more substrates or ligands with the same binding site. The displacement of one by the other is used in quantitative and selective affinity measurements.
Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies.
Analogs of RNA cap compounds which do not have a positive charge. These compounds inhibit the initiation of translation of both capped and uncapped messenger RNA.
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.
Computer systems utilized as adjuncts in the treatment of disease.
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.
An adenine nucleotide containing three phosphate groups esterified to the sugar moiety. In addition to its crucial roles in metabolism adenosine triphosphate is a neurotransmitter.
Substances that inhibit or prevent the proliferation of NEOPLASMS.
The deductive study of shape, quantity, and dependence. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
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.
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.
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.
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).
Analogs of those substrates or compounds which bind naturally at the active sites of proteins, enzymes, antibodies, steroids, or physiological receptors. These analogs form a stable covalent bond at the binding site, thereby acting as inhibitors of the proteins or steroids.
Use of computers or computer systems for doing routine clerical work, e.g., billing, records pertaining to the administration of the office, etc.
Established cell cultures that have the potential to propagate indefinitely.
Compounds obtained by chemical synthesis that are analogs or derivatives of naturally occurring prostaglandins and that have similar activity.
The concentration of a compound needed to reduce population growth of organisms, including eukaryotic cells, by 50% in vitro. Though often expressed to denote in vitro antibacterial activity, it is also used as a benchmark for cytotoxicity to eukaryotic cells in culture.
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 systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.
A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
The use of computers for designing and/or manufacturing of anything, including drugs, surgical procedures, orthotics, and prosthetics.
Methods of investigating the effectiveness of anticancer cytotoxic drugs and biologic inhibitors. These include in vitro cell-kill models and cytostatic dye exclusion tests as well as in vivo measurement of tumor growth parameters in laboratory animals.
An adenine nucleotide containing one phosphate group which is esterified to both the 3'- and 5'-positions of the sugar moiety. It is a second messenger and a key intracellular regulator, functioning as a mediator of activity for a number of hormones, including epinephrine, glucagon, and ACTH.
Cell surface proteins that bind somatostatin and trigger intracellular changes which influence the behavior of cells. Somatostatin is a hypothalamic hormone, a pancreatic hormone, and a central and peripheral neurotransmitter. Activated somatostatin receptors on pituitary cells inhibit the release of growth hormone; those on endocrine and gastrointestinal cells regulate the absorption and utilization of nutrients; and those on neurons mediate somatostatin's role as a neurotransmitter.
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)
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.
Peptides composed of between two and twelve amino acids.
Domesticated bovine animals of the genus Bos, usually kept on a farm or ranch and used for the production of meat or dairy products or for heavy labor.
The study of crystal structure using X-RAY DIFFRACTION techniques. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
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.
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.
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.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
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)
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.
The spatial arrangement of the atoms of a nucleic acid or polynucleotide that results in its characteristic 3-dimensional shape.
Liquid chromatographic techniques which feature high inlet pressures, high sensitivity, and high speed.
Substances used for the detection, identification, analysis, etc. of chemical, biological, or pathologic processes or conditions. Indicators are substances that change in physical appearance, e.g., color, at or approaching the endpoint of a chemical titration, e.g., on the passage between acidity and alkalinity. Reagents are substances used for the detection or determination of another substance by chemical or microscopical means, especially analysis. Types of reagents are precipitants, solvents, oxidizers, reducers, fluxes, and colorimetric reagents. (From Grant & Hackh's Chemical Dictionary, 5th ed, p301, p499)
Materials, frequently computer applications, that combine some or all of text, sound, graphics, animation, and video into integrated packages. (Thesaurus of ERIC Descriptors, 1994)
A series of steps taken in order to conduct research.
The facilitation of a chemical reaction by material (catalyst) that is not consumed by the reaction.
The process of cleaving a chemical compound by the addition of a molecule of water.
A low-energy attractive force between hydrogen and another element. It plays a major role in determining the properties of water, proteins, and other compounds.
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)
Nucleotides in which the base moiety is substituted with one or more sulfur atoms.
The monomeric units from which DNA or RNA polymers are constructed. They consist of a purine or pyrimidine base, a pentose sugar, and a phosphate group. (From King & Stansfield, A Dictionary of Genetics, 4th ed)
Organic or inorganic compounds that contain the -N3 group.
Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.
A nucleoside that is composed of ADENINE and D-RIBOSE. Adenosine or adenosine derivatives play many important biological roles in addition to being components of DNA and RNA. Adenosine itself is a neurotransmitter.
Carbon-containing phosphonic acid compounds. Included under this heading are compounds that have carbon bound to either OXYGEN atom or the PHOSPHOROUS atom of the (P=O)O2 structure.
A purine base and a fundamental unit of ADENINE NUCLEOTIDES.
The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH = log 1/2[1/(H+)], where (H+) is the hydrogen ion concentration in gram equivalents per liter of solution. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th 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.
Diseases of the muscles and their associated ligaments and other connective tissue and of the bones and cartilage viewed collectively.
The lipid- and protein-containing, selectively permeable membrane that surrounds the cytoplasm in prokaryotic and eukaryotic cells.
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.
Purines with a RIBOSE attached that can be phosphorylated to PURINE NUCLEOTIDES.
A cell line derived from cultured tumor cells.
Methods of creating machines and devices.
Automated systems applied to the patient care process including diagnosis, therapy, and systems of communicating medical data within the health care setting.
Peptides whose amino and carboxy ends are linked together with a peptide bond forming a circular chain. Some of them are ANTI-INFECTIVE AGENTS. Some of them are biosynthesized non-ribosomally (PEPTIDE BIOSYNTHESIS, NON-RIBOSOMAL).
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.
Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques.
Agents used in the prophylaxis or therapy of VIRUS DISEASES. Some of the ways they may act include preventing viral replication by inhibiting viral DNA polymerase; binding to specific cell-surface receptors and inhibiting viral penetration or uncoating; inhibiting viral protein synthesis; or blocking late stages of virus assembly.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
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)
Specifications and instructions applied to the software.
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.
Proteins prepared by recombinant DNA technology.
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.
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.
Measurement of the intensity and quality of fluorescence.
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.
A change from planar to elliptic polarization when an initially plane-polarized light wave traverses an optically active medium. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
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.
An eicosanoid, derived from the cyclooxygenase pathway of arachidonic acid metabolism. It is a stable and synthetic analog of EPOPROSTENOL, but with a longer half-life than the parent compound. Its actions are similar to prostacyclin. Iloprost produces vasodilation and inhibits platelet aggregation.
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.
A system in which the functions of the man and the machine are interrelated and necessary for the operation of the system.
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.
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.
A subfamily in the family MURIDAE, comprising the hamsters. Four of the more common genera are Cricetus, CRICETULUS; MESOCRICETUS; and PHODOPUS.
Recording of pertinent information concerning patient's illness or illnesses.
Guanosine 5'-(tetrahydrogen triphosphate). A guanine nucleotide containing three phosphate groups esterified to the sugar moiety.
The level of protein structure in which regular hydrogen-bond interactions within contiguous stretches of polypeptide chain give rise to alpha helices, beta strands (which align to form beta sheets) or other types of coils. This is the first folding level of protein conformation.
Unilateral or bilateral pain of the shoulder. It is often caused by physical activities such as work or sports participation, but may also be pathologic in origin.
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.
A basic science concerned with the composition, structure, and properties of matter; and the reactions that occur between substances and the associated energy exchange.
Preclinical testing of drugs in experimental animals or in vitro for their biological and toxic effects and potential clinical applications.
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.
Organized activities related to the storage, location, search, and retrieval of information.
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.
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)
Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins.
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).
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.
The physiologically active form of vitamin D. It is formed primarily in the kidney by enzymatic hydroxylation of 25-hydroxycholecalciferol (CALCIFEDIOL). Its production is stimulated by low blood calcium levels and parathyroid hormone. Calcitriol increases intestinal absorption of calcium and phosphorus, and in concert with parathyroid hormone increases bone resorption.
The composition, conformation, and properties of atoms and molecules, and their reaction and interaction processes.
Organic compounds containing the -CO-NH2 radical. Amides are derived from acids by replacement of -OH by -NH2 or from ammonia by the replacement of H by an acyl group. (From Grant & Hackh's Chemical Dictionary, 5th ed)
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Polymers made up of a few (2-20) nucleotides. In molecular genetics, they refer to a short sequence synthesized to match a region where a mutation is known to occur, and then used as a probe (OLIGONUCLEOTIDE PROBES). (Dorland, 28th ed)
A nonmetallic, diatomic gas that is a trace element and member of the halogen family. It is used in dentistry as flouride (FLUORIDES) to prevent dental caries.
Organic compounds that contain phosphorus as an integral part of the molecule. Included under this heading is broad array of synthetic compounds that are used as PESTICIDES and DRUGS.
The fission of a CELL. It includes CYTOKINESIS, when the CYTOPLASM of a cell is divided, and CELL NUCLEUS DIVISION.
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.
Systematic gathering of data for a particular purpose from various sources, including questionnaires, interviews, observation, existing records, and electronic devices. The process is usually preliminary to statistical analysis of the data.
Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.
The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.
Biologically active molecules which are covalently bound to the enzymes or binding proteins normally acting on them. Binding occurs due to activation of the label by ultraviolet light. These labels are used primarily to identify binding sites on proteins.
Computer-assisted analysis and processing of problems in a particular area.
Determination of the spectra of ultraviolet absorption by specific molecules in gases or liquids, for example Cl2, SO2, NO2, CS2, ozone, mercury vapor, and various unsaturated compounds. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Computer-assisted processing of electric, ultrasonic, or electronic signals to interpret function and activity.
A series of heterocyclic compounds that are variously substituted in nature and are known also as purine bases. They include ADENINE and GUANINE, constituents of nucleic acids, as well as many alkaloids such as CAFFEINE and THEOPHYLLINE. Uric acid is the metabolic end product of purine metabolism.
A decapeptide that stimulates the synthesis and secretion of both pituitary gonadotropins, LUTEINIZING HORMONE and FOLLICLE STIMULATING HORMONE. GnRH is produced by neurons in the septum PREOPTIC AREA of the HYPOTHALAMUS and released into the pituitary portal blood, leading to stimulation of GONADOTROPHS in the ANTERIOR PITUITARY GLAND.
Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.
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.
A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.
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.
The study of the structure of various TISSUES of organisms on a microscopic level.
A centrally active muscarinic antagonist that has been used in the symptomatic treatment of PARKINSON DISEASE. Benztropine also inhibits the uptake of dopamine.
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)
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 radiology services and facilities.
Computer-based information systems used to integrate clinical and patient information and provide support for decision-making in patient care.
Pyrimidines with a RIBOSE attached that can be phosphorylated to PYRIMIDINE NUCLEOTIDES.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).
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.
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.
An unpleasant sensation induced by noxious stimuli which are detected by NERVE ENDINGS of NOCICEPTIVE NEURONS.
The biological science concerned with the life-supporting properties, functions, and processes of living organisms or their parts.
An optical disk storage system for computers on which data can be read or from which data can be retrieved but not entered or modified. A CD-ROM unit is almost identical to the compact disk playback device for home use.
A benzofuran derivative used as a protein reagent since the terminal N-NBD-protein conjugate possesses interesting fluorescence and spectral properties. It has also been used as a covalent inhibitor of both beef heart mitochondrial ATPase and bacterial ATPase.
Quantitative determination of receptor (binding) proteins in body fluids or tissue using radioactively labeled binding reagents (e.g., antibodies, intracellular receptors, plasma binders).
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)
Adenosine 5'-(trihydrogen diphosphate). An adenine nucleotide containing two phosphate groups esterified to the sugar moiety at the 5'-position.
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 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.
The span of viability of a cell characterized by the capacity to perform certain functions such as metabolism, growth, reproduction, some form of responsiveness, and adaptability.
A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The phenomenon whereby certain chemical compounds have structures that are different although the compounds possess the same elemental composition. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Precise procedural mathematical and logical operations utilized in the study of medical information pertaining to health care.
Discomfort or more intense forms of pain that are localized to the cervical region. This term generally refers to pain in the posterior or lateral regions of the neck.
Computer programs based on knowledge developed from consultation with experts on a problem, and the processing and/or formalizing of this knowledge using these programs in such a manner that the problems may be solved.
Compounds with a 5-membered ring of four carbons and an oxygen. They are aromatic heterocycles. The reduced form is tetrahydrofuran.
An analytical method used in determining the identity of a chemical based on its mass using mass analyzers/mass spectrometers.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
A long-acting derivative of cyclic AMP. It is an activator of cyclic AMP-dependent protein kinase, but resistant to degradation by cyclic AMP phosphodiesterase.
Specific languages used to prepare computer programs.
The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.

An improved vaseline gap voltage clamp for skeletal muscle fibers. (1/44)

A Vaseline gap potentiometric recording and voltage clamp method is developed for frog skeletal muscle fibers. The method is based on the Frankenhaeuser-Dodge voltage clamp for myelinated nerve with modifications to improve the frequency response, to compensate for external series resistance, and to compensate for the complex impedance of the current-passing pathway. Fragments of single muscle fibers are plucked from the semitendinosus muscle and mounted while depolarized by a solution like CsF. After Vaseline seals are formed between fluid pools, the fiber ends are cut once again, the central region is rinsed with Ringer solution, and the feedback amplifiers are turned on. Errors in the potential and current records are assessed by direct measurements with microelectrodes. The passive properties of the preparation are simulated by the "disk" equivalent circuit for the transverse tubular system and the derived parameters are similar to previous measurements with microelectrodes. Action potentials at 5 degrees C are long because of the absence of delayed rectification. Their shape is approximately simulated by solving the disk model with sodium permeability in the surface and tubular membranes. Voltage clamp currents consist primarily of capacity currents and sodium currents. The peak inward sodium current density at 5 degrees C is 3.7 mA/cm2. At 5 degrees C the sodium currents are smoothly graded with increasing depolarization and free of notches suggesting good control of the surface membrane. At higher temperatures a small, late extra inward current appears for small depolarizations that has the properties expected for excitation in the transverse tubular system. Comparison of recorded currents with simulations shows that while the transverse tubular system has regenerative sodium currents, they are too small to make important errors in the total current recorded at the surface under voltage clamp at low temperature. The tubules are definitely not under voltage clamp control.  (+info)

The precision of a special purpose analog computer in clinical cardiac output determination. (2/44)

Three hundred dye-dilution curves taken during our first year of clinical experience with the Waters CO-4 cardiac output computer were analyzed to estimate the errors involved in its use. Provided that calibration is accurate and 5.0 mg of dye are injected for each curve, then the percentage standard deviation of measurement using this computer is about 8.7%. Included in this are the errors inherent in the computer, errors due to baseline drift, errors in the injection of dye and acutal variation of cardiac output over a series of successive determinations. The size of this error is comparable to that involved in manual calculation. The mean value of five successive curves will be within 10% of the real value in 99 cases out of 100. Advances in methodology and equipment are discussed which make calibration simpler and more accurate, and which should also improve the quality of computer determination. A list of suggestions is given to minimize the errors involved in the clinical use of this equipment.  (+info)

Computer-controlled automation of radioimmunoassay based on gel entrapment of antibody. (3/44)

We describe a new, broadly applicable approach to radioimmunoassay. Solid-phase binding reagent is prepared by entrapping antibody in polyacrylamide gel. This gel is then fragmented, sieved, and dehydrated in 95 percent ethanol. Upon evaporation of the ethanol, the dry antibody-gel particles are dispensed into miniature disposable plastic columns. A unidirectional flowing stream configuration is used to construct a standard curve for the polypeptide hormone, angiotensin I, used here to exemplify the technique. Good reproducibility of this standard curve is demonstrated. The analytical system includes a computer-controlled sample turntable, digital pipet, and liquid-switching assembly.  (+info)

On-line identification of sensory systems using pseudorandom binary noise perturbations. (4/44)

A technique of on-line identification of linear system characteristics from sensory systems with spike train or analog voltage outputs was developed and applied to the semicircular canal. A pseudorandom binary white noise input was cross-correlated with the system's output to produce estimates of linear system unit impulse responses (UIRs), which were then corrected for response errors of the input transducers. The effects of variability in the system response characteristics and sensitivity were studied by employing the technique with known linear analog circuits. First-order unit afferent responses from the guitarfish horizontal semicircular canal were cross-correlated with white noise rotational acceleration inputs to produce non-parametric UIR models. In addition, the UIRs were fitted by nonlinear regression to truncated exponential series to produce parametric models in the form of low-order linear system equations. The experimental responses to the white noise input were then compared with those predicted from the UIR models linear convolution, and the differences were expressed as a percent mean-square-error (%MSE). The average difference found from a population of 62 semicircular canal afferents was relatively low mean and standard deviation of 10.2 +/- 5.9 SD%MSE, respectively. This suggests that relatively accurate inferences can be made concerning the physiology of the semicircular canal from the linear characteristics of afferent responses.  (+info)

Coagulation-time determination with automatic multivariable analysis, by use of a miniature centrifugal fast analyzer. (5/44)

Use of a miniature Centrifugal Fast Analyzer for the parallel photometric monitoring of the coagulation process is shown to have a number of advantages. These include a choice of optical modes, virtually simultaneous initiation and observation of the coagulation process for a number of patient-plasma samples and an on-board control sample, small sample and reagent volume requirements, and automatic determination of a number of diagnostically useful variables (including relative fibrinogen content) from the data recorded in a single run. Also, the system is shown to give results that correlate well with those obtained by conventional techniques for determination of prothrombin time.  (+info)

Influence of an aggregated multienzyme system on transient time: kinetic evidence for compartmentation by an aromatic-amino-acid synthesizing complex of Neurospora crassa. (6/44)

The aromatic complex of Neurospora crassa is an aggregated multienzyme system which catalyzes five consecutive reactions in the central pathway leading to the biosynthesis of the aromatic amino acids. In an attempt to understand the physiological importance of this complex in particular, as well as the importance of cellular organization of enzyme systems in general, we have isolated the complex and have begun to characterize its catalytic properties. Optimum conditions for the assay of the overall 5-step reaction catalyzed by the partially purified complex have been determined. An analog computer was programmed to represent an unaggregated system of five enzymes with rate constants identical to those found for the constituent enzymes of the complex. By direct comparison, it was shown that the lags (transient times) obtained for the overall reaction were 10-15 times longer for the hypothetical unaggregated system than for the complex. We conclude from these data that the aggregated multienzyme system compartmentalizes intermediate substrates during the course of the overall reaction. We suggest that, in addition to "channeling" intermediates of competing pathways, reduction of the transient time may be an important consequence of the containment of intermediates within a physically associated enzyme sequence. The fact that the aromatic complex exhibits a second catalytic property unique to aggregated enzyme systems, "coordinate activation" [Welch, G.R. & Gaertner, F.H. (1975) Arch. Biochem. Biophys., in press] indicates that the physical association of these enzymes may have more than one physiological function.  (+info)

The dissociation of flavin coenzymes from trypsin-solubilized NADPH/Cytochrome c (P-450) reductase of pig-liver microsomes. (7/44)

The change in fluorescence emission at 520 nm after excitation at 365 nm was used to investigate the effect of pH and ionic strength on the dissociation of flavin cofactors from microsomal NADPH/cytochrome c (P-450) reductase. In the unmodified enzyme both the FAD and FMN moieties appeared to dissociate at a similar rate and followed first-order kinetics. The rate constant for the dissociation was increased by low pH and high ionic strength, particularly in the range pH 4.4-3.8 (0.02 M acetate buffer) where the rate constants increased 80-fold. Modification of the enzyme by treatment with p-chloromercuribenzoate enhanced the rate of flavin dissociation and, in the region of pH 4, resulted in a biphasic increase in fluorescence consistent with two simultaneous parallel first-order dissociations. It was concluded that p-chloromercuribenzoate treatment modified the protein so that the two flavin cofactors dissociated at different rates. Using the measured rate constants for the dissociations, and the known variation in fluorescence of flavin nucleotides with pH, an analogue computer simulation of the dissociation as well as a manual curve-fitting procedure showed that the biphasic response could be explained as a simultaneous rapid dissociation of FAD and a slower loss of FMN from the protein.  (+info)

A NEW INTERPRETATION OF THE DYNAMIC CHANGES OF THE POTASSIUM CONDUCTANCE IN THE SQUID GIANT AXON. (8/44)

The solutions, n(t), of the differential equation dn/dt = alpha (1 - n) n (4 - 6n + 4n(2) - n(3)) - betan(2) (4 - 6n + 4n(2) - n(3)) in which alpha and beta are instantaneous functions of membrane potential, are shown to fit with good accuracy the time courses of the rise of potassium conductance during depolarizing steps in clamp potential, found experimentally by Hodgkin and Huxley and by Cole and Moore. The equation is derived by analysing the dynamic behaviour of a system consisting of a square array of interacting pores. The possible role of Ca(++) ions in this system is discussed.  (+info)

While a wide variety of mechanisms have been developed throughout history, some stand out because of their theoretical importance, or because they were manufactured in significant quantities. Most practical mechanical analog computers of any significant complexity used rotating shafts to carry variables from one mechanism to another. Cables and pulleys were used in a Fourier synthesizer, a tide-predicting machine, which summed the individual harmonic components. Another category, not nearly as well known, used rotating shafts only for input and output, with precision racks and pinions. The racks were connected to linkages that performed the computation. At least one US Naval sonar fire control computer of the later 1950s, made by Librascope, was of this type, as was the principal computer in the Mk. 56 Gun Fire Control System. Online, there is a remarkably clear illustrated reference (OP 1140) that describes[28] the fire control computer mechanisms. For adding and subtracting, precision ...
The usefulness of a digitally controlled analog computer in studying digital detection systems was examined. A program was developed for a computer equipped with parallel logic elements. Experience with the system shows it to be a very useful tool for such studies particularly because of the excellent man machine interaction and also because of a possible cost advantage. (Author)(*DEMODULATORS
This volume of Analog Circuit Design concentrates on three topics: Operational Amplifiers. A-to-D converters and Analog CAD. The book comprises six papers on each topic written by internationally recognised experts. These papers have a tutorial nature aimed at improving the design of analog circuits. The book is divided into three parts. Part I, Operational Amplifiers , presents new technologies for the design of Op-Amps in both bipolar and CMOS technologies. Two papers demonstrate techniques for improving frequency and gain behavior at high voltage. Low voltage bipolar Op-Amp design is treated in another paper. The realization high-speed and high gain VLSI building blocks in CMOS is demonstrated in two papers. The final paper shows how to provide output power with CMOS buffer amplifiers. Part II, Analog-to-Digital Conversion , presents papers which address very high conversion speeds and very high resolution implementations using sigma-delta modulation architectures. Analog to Digital ...
can the tft7020 samsung recieve both digital and analogue signals, from two computers at the same time, and switch between them?just curious...
Once transcription is complete, there are further controls that allow the network of enzymes and genes to control itself. Im not going to list all of them, but one that cannot be left out involves alternative splicing of RNA. This is a process in which the transcribed RNA is edited, usually removing a number of sections called introns, while creating the final mRNA. Which introns are removed, and sometimes where their boundaries are set, determines the sequence of the final mRNA, and thus the character of the protein. Alternative splicing can be affected by enzymes, but also by non-coding RNAs of various types and provenance, including those snipped out of the introns of other genes. A description of some of the ways in which alternative splicing can be regulated may be found in Regulation of Alternative Splicing: More than Just the ABC by Amy E. House and Kristen W. Lynch. It may turn out that the number of data connections that affect protein (enzyme) concentration via regulation of internal ...
Awesome! I can talk about what I think is one of the coolest inventions of all time: the analog computer.. An analog (more properly, a mechanical) computer was actually the worlds first computer - the Antikythera Mechanism. It was an ancient Greek device that predicted the motions of the planets and other astronomical objects. Only parts of it have been found, but we can figure out a few of its basic properties. It made its computations using an elaborate system of gears.. Fast forward a couple millennia. Lets go to England, and meet a man by the name of Charles Babbage. Im guessing youve heard of him. He shows up in a lot of books on alternative history, because hes hailed as one of the first computer pioneers. Babbages first computer was the Difference Engine, a glorified calculator that could work with polynomials. It used a lot of gears to work with polynomials and do advanced calculations. Babbage got some funding from the government, but not a lot.. Later, he worked on his more ...
A general purpose programmable neural computer which parallel processes analog data. The neural computer comprises neural elements for outputting an analog signal in response to at least one input signal, synaptic circuits interfaced with the neural elements for modifying gains of the neural elements, and switching circuits interfaced with the synaptic circuits and the neural circuits for routing signals between the synapse circuits and the neural circuits and for modifying the synaptic time constants, thereby changing connection architecture of the general purpose analog computer as desired. In this manner, the neural computer of the invention can be programmed to learn different confirurations as well as different synaptic values.
The kinetics of sodium, movement into human red blood cells has been studied in vivo with 24Na. When human serum albumin-131I is used to measure the percentage of plasma trapped in the packed red blood cells after centrifugation, approximately 30 % of red blood cell sodium is found to equilibrate immediately with plasma. It is concluded that this immediately exchangeable compartment of red blood cell sodium is an experimental artefact, associated with the use of labeled albumin for measuring plasma trapping. This immediately exchangeable fraction disappears when sucrose-14C is used to measure plasma trapping. The experimental results were examined by compartmental analysis, using an analogue computer. The results obtained, when plasma trapping was measured with sucrose-14C could be simulated by the use of models containing two compartments, arranged in series or in parallel. The errors of the techniques used and the possible physical basis for the results are discussed.. ...
DARPA future research includes fascinating new technology like simulating the brain, self-destructing computers, analog computers and more.
I]n a fundamental sense all computing is based on an analogy, that is, on a systematic relationship between the states and processes in the computer and those in the primary system. In a digital computer, the relationship is more abstract and complex than simple proportionality, but even so simple an analog computer as a slide rule goes beyond strict proportion (i.e., distance on the rule is proportional to the logarithm of the number). In both analog and digital computation-indeed in all computation-the relevant abstract mathematical structure of the problem is realized in the physical states and processes of the computer, but the realization may be more or less direct ([refs]). Therefore, despite the etymologies of the terms analog and digital, in modern usage the principal distinction between digital and analog computation is that the former operates on discrete representations in discrete steps, while the later operated on continuous representations by means of continuous processes ...
The authors give the basic principles of an analog device for solving a system of differential equations describing the behavior of a nuclear reactor with respect to time. Systems of this type are difficult to solve, especially when the reactivity varies with time. The proposed device may be used for solving problems involving six groups of delayed neutrons, or may alternatively be programmed for a simplified equation with a single group of delayed neutrons. The proposed computer may be used in studying high-power reactors where the maximum neutron density in the core may reach 10 to the 15th power n/cu cm.*ANALOG COMPUTERS)
A seventeen degree of freedom hybrid computer simulation of the automobile has been developed to allow the dynamic study of simultaneous large amplitude performance, cornering, and ride motions. This simulation, capable of running in real time, combines the speed of the analog computer to solve the
Shortly after the publication of Hodgkin and Huxleys equations for the squid giant axon, Richard FitzHugh was working at the Biophysics Laboratory of the National Institutes of Health (NIH) in Bethesda, Maryland. He undertook an analysis of the mathematical properties of their equations. He used the new techniques of nonlinear mechanics which had been developed by Russian mathematicians led by A. A. Andronov. This was before digital computers became easily accessible. John Moore and FitzHugh started by planning how to program an analog computer which could be used to solve the Hodgkin-Huxley equations. The equipment needed included operational amplifiers, function generators, multipliers, and an ink pen plotter. The laboratory purchased the computer, which occupied four floor-to-ceiling relay racks, full of vacuum tubes. These were continually failing, and FitzHugh had to find and replace several tubes a week, requiring some detective work. The heat from all these tubes sometimes overloaded the ...
Much of modern science was known in ancient times. Robots and computers were a reality long before the 1940´s. The early Bronze Age inhabitants of the Levant used computers in stone, the Greeks in the 2nd century BC invented an analogue computer known as the Antikythera mechanism. An ancient Hindu book gives detailed instructions for the construction of an aircraft -ages before the Wright brothers. Where did such knowledge come from?
The earliest known example of a clockwork mechanism is the Antikythera mechanism, a first-century BC geared analogue computer, somewhat astrolabe-like, for calculating astronomical positions and eclipses, recovered from a Greek shipwreck. There are many other accounts of clockwork devices in ancient Greece, even in its mythology, and the mechanism itself is sophisticated enough to indicate a significant history of lesser devices leading up to its creation.[6]. At some point, this level of sophistication in clockwork technology was lost or forgotten in Europe, and only returned when brought from the Islamic world after the Crusades, along with other knowledge leading to the Renaissance. Clockwork finally recovered the equivalent of pre-Roman technological levels in the 14th century.[7]. As in Greek mythology, there are ambitious automation claims in the legends of other cultures. For example, in Jewish legend, Solomon used his wisdom to design a throne with mechanical animals which hailed him as ...
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Bounty Hunter Red Baron VLF SPD RB-7D & Outlaw 290 GROUND REJECT DISCRIMINATOR METAL/MINERAL DETECTOR OPERATING INSTRUCTIONS BOUNTY HUNTER RED BARON & OUTLAW 290 . . . The ultimate detectors You now have in your possession the most versatile, sensitive, easy-to-use Metal Detector ever produced for the treasure hunter! With this unique detector, you will be finding coins and valuables that until now were beyond the capabilities of the other detectors to distinguish! And, if you develop a smug little smile, it will be because you find yours without the amount of backbreaking digging that is necessary with the other detectors. The revolutionary new S.P.D.* (Synchronous Phase Discrimination) circuitry enables Discrimination at VLF depths! This patented technique uses a type of analog computer that reads the sensing signal of the combined target and matrix (supporting soil around the target), then subtracts the effects of the matrix leaving only the sound of the target itself to analyze! EVEN THOUGH ...
Life of his father, Karl Schwarzschild; fathers scientific relationships in Göttingen (Felix Klein, David Hilbert); move to Potsdam, 1909; relations with Potsdam and Berlin scientists (Albert Einstein, Karl Sommerfeld); fathers Jewish background concealed. M. Schwarzschilds youth in Göttingen and Berlin; early education, interest in astronomy and mathematics. Undergraduate at Göttingen Universität (Hans Kienle, Richard Courant, Neugebauer), 1930-1933; graduate work at Gottingen Observatory, 1933-1935; his reaction to Nazism. Introduction to astrophysics (Arthur Eddington), interest in stellar interiors and stellar evolution; contacts with other astronomers from Gottingen Observatory (Otto Heckmann, Kienle, Rupert Wildt); comments on general relativity; interest in pulsating stars; leaves Göttingen, 1936. Postdoctorate at Oslo (Svein Rosseland); Jan Oort, Ejnar Hertzsprung; mechanical analog computer for computations in astrophysics and celestial mechanics; comments on development of ...
This Mechanism is considered the worlds fist analogue computer. It was discovered when sponge divers, in Antikythera, dove in off the coast in 1900AD and found this in ocean.. This archeological find dates back to the 2nd century BC, making it well over 2,000 years old and it is a complex system of gears, dials and cogs with amazing precision. Scientist agree that it represents something that would not be seen again until the rise of clocks thousands of years later.. Many speculate that it was used as an astronomy calculator that predicted and measured the cycle of planets in relation to the Sun, Earth, and Moon.. This mechanism has been x-rayed, studies, and attempts have been made to reconstruct it, however its very existence still seems to baffle the minds of scientists today.. What is coincidental is the fact that off the coast of Crete there is a unique historical record of ancient robots of immense size. Furthermore there is a story in Crete of a robot named Talos, who hurled boulders ...
Chidambaram completed his early education in Meerut and Chennai, completing his B.Sc. with honors in physics, having stood first rank at the departmental and the university level of the Madras University in 1956. After enrolling in masters program, Chidambaram taught introductory physics laboratory courses and obtained M.Sc. in physics, writing a fundamental thesis on analog computers from the same institution, in 1958. He was accepted for the doctoral programme of the Indian Institute of Science (IISc), and was awarded the PhD in 1962. His thesis contained the research work on the development of Nuclear Magnetic Resonance, and was conferred with the Martin Forster Medal for the best doctoral thesis submitted to the Indian Institute of Science. Chidambaram is a versatile scholar, interest first in physics. After graduating, his interest in nuclear physics diminished and his research interest in physics did not keep him motivated to contribute in his field. Instead, Chidambaram found himself ...
Use clear plastic over the water ends.. you should be able to hot glue it then remove after. Test to make sure your barrier is water tight. The resin has a nasty habit of finding any hole and leaking. You always get an ellipsis where the water effects dries against a barrier. This can be cut down and smoothed with sandpaper then use a clear gloss paint product to fix the cutting & sanding area. Test this first on the product you are using for water. I have used many resins for this, and my favorite is enviro-tex lite. Also, you can remove any air bubbles with a hairdryer. Just make sure you dont heat the terrain up enough to melt your board grass. I would also pour the water in stages (inch or so at a time) and during a time you can keep an eye on it to get bubbles out. Bubbles have a way of creeping back in after the initial heat removal. Best of luck, looking forward to seeing your finished board with minis on it!. ReplyDelete ...
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Of course not all of the VMs need to be configured with multiple vCPUs per core, but in the general case. The software factors in a host of different metrics such as the flight time, cargo weight, plus a much appreciated safety factor in order to determine exactly how much fuel is needed to achieve the goal of making it to the destination as efficiently as possible. We have 3 hosts, totaling 24 processors and 55 GHz. If it matters, I am looking at vmWare for the virtualization implementation. Sorry, were still checking this files contents to make sure its safe to download. If the cores use hyperthreading, the number of logical cores is calculated as:. RAM and storage are always the limiting factors. ...
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In Grinding, selecting (calculate) the correct or optimum ball size that allows for the best and optimum/ideal or target grind size to be achieved by your ball mill is an important thing for a Mineral Processing Engineer AKA Metallurgist to do Often, the ball used in ball mills is oversize just in case Well, this safety factor can cost you much in recovery and/or mill liner wear and tear. ...
Hydrodynamic pilot wave analogs[edit]. Hydrodynamic analogs have been developed that can recreate various aspects of quantum ... Computer simulations[edit]. *Java demonstration of Young's double slit interference. *A simulation that runs in Mathematica ... no hydrodynamic analog of entanglement has been developed.[52] Nevertheless, optical analogs are possible.[56] ... Hydrodynamic analog[edit]. *"Single-particle interference observed for macroscopic objects". *Pilot-Wave Hydrodynamics: ...
Analog computers work directly with physical quantities, so their addition mechanisms depend on the form of the addends. A ... Truitt, T.; Rogers, A. (1960). Basics of Analog Computers. John F. Rider. LCC QA76.4 T7.. ... The most common situation for a general-purpose analog computer is to add two voltages (referenced to ground); this can be ... Ifrah, Georges (2001). The Universal History of Computing: From the Abacus to the Quantum Computer. New York, NY: John Wiley & ...
Analog computers c. 150 BC In 1900-1901, the Antikythera mechanism was found in the Antikythera wreck. It is thought that this ... Whereas the Antikythera mechanism is considered a proper analog computer, the astrolabe (also invented by the Greeks) may be ... device was an analog computer designed to calculate astronomical positions and was used to predict lunar and solar eclipses ... Bernd Ulmann (2013). Analog Computing. Munich: Oldenbourg Verlag München. ISBN 978-3-486-72897-2, pp 5-6 ...
Computer Gaming World awarded Infiltrator II zero stars and described it as "Even worse than the original". The game was ... Steve Panak writing for ANALOG Computing approved of the documentation but preferred Ace of Aces as an Atari 8-bit flight ... CS1 maint: discouraged parameter (link) Brooks, M. Evan (May 1994). "Never Trust A Gazfluvian Flingschnogger!". Computer Gaming ... CS1 maint: discouraged parameter (link) Panak, Steve (September 1988). "Panak Strikes". ANALOG Computing. p. 83. Retrieved 30 ...
The most common situation for a general-purpose analog computer is to add two voltages (referenced to ground); this can be ... Truitt, T.; Rogers, A. (1960). Basics of Analog Computers. John F. Rider. LCC QA76.4 T7. Marguin, Jean (1994). Histoire des ... Proceeding like this gives the final answer 1001002 (3610). Analog computers work directly with physical quantities, so their ... In modern digital computers, integer addition is typically the fastest arithmetic instruction, yet it has the largest impact on ...
Computer Gaming World's Scorpia in 1987 described the gameplay as very similar to that of its predecessor, with a few changed ... CS1 maint: discouraged parameter (link) Panak, Steve (September 1988). "Panak Strikes". ANALOG Computing. p. 83. Retrieved 30 ... CS1 maint: discouraged parameter (link) Scorpia (October 1987). "The Eternal Dagger". Computer Gaming World. pp. 46-47. Scorpia ... "The Role of Computers" column. The reviewers gave the game 11⁄2 out of 5 stars. Maher, Jimmy (2016-03-18). "Opening the Gold ...
Moriarty, Brian (July-August 1983). "Happy 810 Enhancement". ANALOG Computing. pp. 81-82. logicsays.com, "Happy Computers ... Williams, Gregg (Sep-Oct 1986). "Atari Playfield". Computer Gaming World. p. 35. Brooks, M. Evan (May 1987). "Computer ... Happy Computers is most noted for the add-in boards for the Atari 810 and Atari 1050 disk drives, which achieved a tremendous ... Happy Computers was formed in 1982 by Richard Adams under the name Happy Computing. At that time, the 810 Happy was hand wired ...
Computer Gaming World considered each robot to have a unique personality, and praised the use of the library computer as an in- ... Brian Moriarty of ANALOG Computing also praised the robots' characterization, stating that "a few hours with these electronic ... Computer Gaming World declared Suspended the 58th-best computer game ever released. "Infocom Scoreboard" (PDF). The New Zork ... Briefing for the Contra Central Mentality, a booklet that provides an overview of the facility, the robots, the computer system ...
... is a media entrepreneur and founder of a number of hi-tech publications: • ANALOG Computing • ST-Log • VideoGames ... CS1 maint: discouraged parameter (link) "The Paper Trail: VideoGames & Computer Entertainment #1". Archived from the original ... Computer Entertainment • PC Laptop • TurboPlay • VISIO • Picture This! • Home Theater Builder Pappas is currently[when?] the ...
CS1 maint: discouraged parameter (link) Scorpia (October 1991). "C*R*P*G*S / Computer Role-Playing Game Survey". Computer ... CS1 maint: discouraged parameter (link) Review in ANALOG Computing Review in ANALOG Computing Review in Family Computing Review ... In 1991 and 1993 Computer Gaming World's Scorpia called Phantasie "a surprisingly good little game, with many interesting ... CS1 maint: discouraged parameter (link) Scorpia (October 1993). "Scorpia's Magic Scroll Of Games". Computer Gaming World. pp. ...
Computer History Museum. Retrieved 10 June 2015.. *^ Brown, Clair; Linden, Greg (2011). Chips and change : how crisis reshapes ... 2011). Analog VLSI Implementation of Neural Systems (PDF). Springer Verlag. ISBN 978-1-4612-8905-0. Retrieved 9 June 2015.. ... "Computer Science @ Caltech : History". 50th Anniversary Celebration. Retrieved 10 June 2015.. *^ Sutherland, Ivan E.; Mead, ... Gilder, George (2005). The Silicon Eye: How a Silicon Valley Company Aims to Make All Current Computers, Cameras, and Cell ...
ANALOG Computing praised the Atari 8-bit version's gameplay, graphic, and animation, only criticizing the computer opponent's ... "The Software Chart". Computer and Video Games. No. 55 (May 1986). 16 April 1986. p. 40. Ferrell, Keith (December 1987). "The ... Initially released for the Commodore 64 in 1985, it was ported to other computers over the next several years. A Sega Genesis ... CS1 maint: discouraged parameter (link) Wilson, Johnny (April 1987). "Bezbol Been Berry, Berry Good To Me!" (PDF). Computer ...
Moriarty was a Technical Editor for the Atari 8-bit computer magazine ANALOG Computing. He wrote two text adventures for ANALOG ... Moriarty, Brian (November 1983). "mUSE: A BASIC Memory Monitor". ANALOG Computing: 111. Archived from the original on 2015-04- ... Moriarty, Brian (July 1983). "Snail". ANALOG Computing: 12. Archived from the original on 2015-04-02. Retrieved 2015-04-01. ... Moriarty, Brian (November 1986). "Designer Profiles / Brian Moriarty" (PDF). Computer Gaming World. No. 32. p. 16. Retrieved 17 ...
Two of the screens are direct analogs of those in Donkey Kong. The game was ported to the Atari 8-bit family by Tim Ferris, the ... Canyon Climber is a video game designed by Steve Bjork and James Garon for the TRS-80 Color Computer and published by Tandy ... Reviewing the TRS-80 Color Computer version for Creative Computing, Stephen B. Gray warned, "Canyon Climber is a game for the ... Ports to other home computers were published by Datasoft. Canyon Climber is a three-screen platform game with an American ...
In 1985 ANALOG Computing editor Lee Pappas wrote, "the graphics are somewhat rough, and the control panel is not up to what it ... A version for Thomson computers was published in 1985 by FIL in France with the title Vol Solo. A Second Edition of the game ... "Vol Solo (Thomson Computer)". DCMOTO. Archived from the original on 2019-11-05. "Solo Flight - Second Edition". Atari Mania. " ... Roy Wagner reviewed and compared Solo Flight and Flight Simulator II for Computer Gaming World, and stated that "a very good ...
"Computer Entertainer, March 1986". Computer Entertainer. 4 (12): 11. "SSI Spring 1986 Catalog". 1986. Barton, Matt (2008). ... CS1 maint: discouraged parameter (link) Panak, Steve (December 1986). "Panak Strikes". ANALOG Computing: 97. Retrieved 7 July ... CS1 maint: discouraged parameter (link) Lesser, Hartley and Pattie (October 1986). "The Role of Computers". Dragon (114): 72-76 ... CS1 maint: discouraged parameter (link) Scorpia (September-October 1986). "Wizard's Crown". Computer Gaming World. pp. 24-25. ...
Computer History Museum. August 6, 2010. Retrieved July 21, 2019. "The most manufactured human artifact in history". Computer ... The MOSFET is by far the most widely used transistor for both digital circuits as well as analog circuits, accounting for 99.9 ... It is often easier and cheaper to use a standard microcontroller and write a computer program to carry out a control function ... Computer History Museum. Lojek, Bo (2007). History of Semiconductor Engineering. Springer Science & Business Media. pp. 321-3. ...
1946.) Bromley, Allan G. (1990). "Analog Computing Devices". In Aspray, William (ed.). Computing Before Computers. Iowa State ... Director (military) Fire-control system Gun data computer Rangekeeper Bromley, Allan G. "British Mechanical Gunnery Computers ... but the Kerrison's electromechanical analog computer was the first to be fast enough to be used in the demanding high-speed low ... and in 1944 Bell Labs started delivery of a new system based around an electronic analog computer. The timing proved excellent ...
I wonder if I've got something on my computer...I think I'll talk with our IT department about this computer. Nyttend backup ( ... The incoming information was analog. The output was an analog radar display with many digital lights and buttons. The circuitry ... Does your hub work with any other devices (such as keyboard or mouse)? Have you tried it on a different computer? Dbfirs 15:43 ... Computer algebra system may be more useful to you. Mathematica is an example of a language/system which can support statements ...
Moriarty, Brian (October 1983). "Atari Logo: Son of Lisp". ANALOG Computing (14): 19. Atari Logo at Atari Mania Computer Art ... Atari has announced that Logo Computer Systems, Inc. (LCSI) is implementing Logo for Atari's computers (see page 20) ATARI LOGO ... Scott Mace of InfoWorld wrote, "Atari Logo is an excellent product and it enhances the value of Atari computers for learning in ... It wins the battle with BASIC hands down." In a 1983 review for ANALOG Computing, Brian Moriarty concluded, "Atari Logo is one ...
"Mega-Bug". Tandy Color Computer Games. "Tumble Bugs". Atari Mania. "New Products". ANALOG Computing (13): 17. September 1983. ... Dung Beetles was ported to Atari 8-bit family and the TRS-80 Color Computer. The Color Computer version was sold by Tandy and ... CS1 maint: discouraged parameter (link) Benioff, Marc (May 1982). "Benioff At Large". ANALOG Computing (6): 7.. ... Writing for ANALOG Computing, Marc Benioff called Tumble Bugs, "an outstanding variation on Pac-Man". Hague, James. "The Giant ...
"The best ST games of 1986". ANALOG Computing (49): 76. December 1986. "Taking A Peek". Computer Gaming World. 5 (5): 6-9. ... "Computer Gamer - Issue 10 (1986-01)(Argus Press)(GB)". January 6, 1986 - via Internet Archive. Temple of Apshai Trilogy can be ... The Temple of Apshai Trilogy proves they can do both." Patrick J. Kelley for ANALOG Computing said "So, if you're the armchair- ... I certainly missed the main point of the game, but it was undeniably fun to wander around and bash monsters." Computer Gamer # ...
"VIC-20 Talk-Back (Maplin GB17T LK00A)". Retro Computers. Archived from the original on 2011-09-01. Retrieved 2011-07-30. Lee ... creating a digital output converted into an analog signal through an external low pass filter. The SPO256 includes 2 KB of mask ... Brilliant, M.D. (1985-04-01). "Cheep Talk: Build your own speech synthesizer". Analog Computing, issue 29. Retrieved 2012-03-13 ...
Computer Gaming World. 1 (32): 46-48. Review in ANALOG Computing. ... M. Evan Brooks reviewed the game for Computer Gaming World, and stated that "Overall, Rommel is an extremely detailed ... But the detail clutters playability to an unconscionable degree so that Rommel becomes an exercise in frustration." Computer ...
Electric analog computer studies. Arch. Biochem. Biophys. 37, 322-339 (1952). Chance, Britton and Garfinkel, David and Higgins ...
doi:10.1090/S0002-9939-1986-0813834-9. Rubel A, Lee A. (1985). "The brain as an analog computer" (PDF). Journal of Theoretical ... L. A. Rubel (1993). "The Extended Analog Computer". Advances in Applied Mathematics. 14 (1): 39-50. doi:10.1006/aama.1993.1003 ... Mills, J.W. (2008). "The nature of the extended analog computer". Physica D: Nonlinear Phenomena. Elsevier. 237 (9): 1235-1256 ... L. A. Rubel (1988). "Some mathematical limitations of the general-purpose analog computer". Advances in Applied Mathematics. 9 ...
Salamone, Ted (May 1984). "Computer Corner: Bristles". Video Games. Pumpkin Press. 2 (8): 80. Eddy, Andy (November 1985). " ... In a 1985 ANALOG Computing review of reduced price games, Andy Eddy cautioned, "Many users will find Bristles too difficult and ... Bristles at Atari Mania Review in Electronic Fun with Computers & Games Review in Commodore User. ... "Bargain Bin". ANALOG Computing (36): 19. "Atari 5200 Bristles (First Star Software)". AtariAge. ...
Computer Gaming World stated "I do not feel that the changes [from Zombies] are numerous-enough or significant enough to ... Panak, Steve (May 1985). "Panak Strikes!". ANALOG Computing: 69-70. Hughes, Gwyn (April 1986). "Realm of Impossibility". Your ... When his job changed and he was no longer programming at work, he became interested in the home computer market as a way to ... Checking over various models at a local computer store, he purchased an Atari after seeing Star Raiders. After having the ...
Computers and the Humanities. 31 (3): 189-202. doi:10.1023/A:1000676723815. hdl:2027.42/42573. ISSN 1572-8412. "Analog vs. ... Analog signals can be converted to digital signals by using an analog-to-digital converter. Nearly all recorded music has been ... A series of digital integers can be transformed into an analog output that approximates the original analog signal. Such a ... Computers are no longer made with them, and obtaining the hardware to convert a file from an obsolete format to a newer one can ...
Mims was interested in science at an early age, and he built an analog computer as a high school science fair project in 1960. ... Mims wrote an article for the December 1987 issue of Modern Electronics describing his homebrew analog computer complete with ... Mims, Forrest (December 1987). "A Homebrew Analog Computer". Modern Electronics. Vol. 4 no. 12. pp. 39-41. ISSN 0748-9889. Mims ... "Altair Computer, 1975". Computer History Collection. Smithsonian National Museum of American History. Archived from the ...
This tracer is a glucose analog that is taken up by glucose-using cells and phosphorylated by hexokinase (whose mitochondrial ... Three-dimensional images of tracer concentration within the body are then constructed by computer analysis. In modern PET ... 1978). "Labeled 2-deoxy-D-glucose analogs. 18F-labeled 2-deoxy-2-fluoro-D-glucose, 2-deoxy-2-fluoro-D-mannose and 14C-2-deoxy-2 ... If the biologically active tracer molecule chosen for PET is fludeoxyglucose (FDG), an analogue of glucose, the concentrations ...
This computer analysis makes it possible to detect and quantify abnormal brain organization, to give a quantitative definition ... This allowed researchers to transform analog EEG signals into digital signals for statistical analysis. Leading researchers in ... This was due in part to the advent of inexpensive methods of linking computers to traditional EEG devices. ...
"Computer History Museum. April 2, 2018. Retrieved July 28, 2019.. *^ a b Streetman, Ben (1992). Solid State Electronic Devices ... The MOSFET is by far the most widely used transistor for both digital circuits as well as analog circuits,[81] accounting for ... Computer History Museum.. *^ a b Lojek, Bo (2007). History of Semiconductor Engineering. Springer Science & Business Media. pp ... "Computer History Museum. December 4, 2013. Retrieved July 20, 2019.. *^ a b "13 Sextillion & Counting: The Long & Winding Road ...
As an alternative to X-ray detectors, image intensifiers are analog devices that readily convert the acquired X-ray image into ... in conjunction with a computer to create images of both soft and hard tissues. These images look as though the patient was ...
Recording from an analogue source resulted in a disc marked "protected" and "original" allowing one further copy to be made ( ... The data structure and operation of a MiniDisc is similar to that of a computer's hard disk drive. The bulk of the disc ... Unlike the DCC or the analog Compact Cassette, the disc is a random-access medium, making seek time very fast. MiniDiscs can be ... NetMD recorders allow music files to be transferred from a computer to a recorder (but not in the other direction) over a USB ...
Programmable analog computer: Lihat Analog computers di bawah.. *Pancaragam beraturcara robot manusia: Al-Jazari (1136-1206) ... Komputer analog Beraturcara: Jam kota, sebuah jam astronomi direka oleh Al-Jazari pada 1206, ia dianggap komputer analog ... Komputer analog[sunting , sunting sumber]. Astrolabe universal bebas-latitud direka oleh Abū Ishāq Ibrāhīm al-Zarqālī (Arzachel ... a b Tuncer Oren (2001). "Advances in Computer and Information Sciences: From Abacus to Holonic Agents", Turk J Elec Engin 9 (1 ...
The most obvious external difference relative to Soviet analogs is the reduced number of KMT mounting points on the lower hull ... Features new fire control system with thermal sights and a ballistic computer and 3rd generation "Relikt" explosive reactive ... A large amount of reactive armor (analog to T-90MS). New radio communication. New panoramic sight. Increased protection against ... after the year 2000 received an improved 1A40-01M fire control system which makes use of a TBV digital ballistic computer. The ...
Analog signal processing. *Anarchy. *Anastasia. *Animal Crossing: City Folk. *Apostasy in Islam ...
Advancements in computer science found applications designing and managing plants, simplifying calculations and drawings that ... Operators in a chemical plant using an older analog control board, seen in East-Germany, 1986. ... Both applied and research facets could make extensive use of computers.[35] ...
For the term in computer programming, see Source code.. In signal processing, data compression, source coding,[1] or bit-rate ... If the data to be compressed is analog (such as a voltage that varies with time), quantization is employed to digitize it into ... International Journal of Computer Science Issues. 9 (6, No. 3): 53-59. Retrieved 6 March 2013.. ... If the integers generated by quantization are 8 bits each, then the entire range of the analog signal is divided into 256 ...
An online monitor computer located in the control room reads data from the DAQ host computer via an FDDI link. It provides ... Charge-to-analog converters (QAC) and time-to-analog converters (TAC) are contained in these modules that had dynamic range ... The computer system consists of 3 major sub-systems: the data server, the CPU farm and the network at the end of Run I.[7] ... For each range, analog to digital conversion is conducted separately, but the only range used is that with the highest ...
However analog two-wire circuits are still used to connect the last mile from the exchange to the telephone in the home (also ... At the turn of the 21st century, the oldest parts of the telephone network still use analog technology for the last mile loop ... Originally a network of fixed-line analog telephone systems, the PSTN is now almost entirely digital in its core network and ... Most automated telephone exchanges use digital switching rather than mechanical or analog switching. The trunks connecting the ...
... is a problem when a binary file created on a computer is read on another computer with different endianness. Some ... The bit-level analogue of little-endian (least significant bit goes first) is used in RS-232, HDLC, Ethernet, and USB. Some ... Also published at IEEE Computer, October 1981 issue. *^ "Internet Hall of Fame Pioneer". Internet Hall of Fame. The Internet ... Computer programs often use data structures of fields that may consist of more data than is stored in one memory cell. For the ...
Documentation from Hilary J. Kahn, Department of Computer Science, University of Manchester *EDIF 2 0 0, An Introductory ... They saw immediately that while vendor A might have a really nice analog simulation environment, vendor B had a much better PCB ... Later Hilary Kahn, a computer science professor at the University of Manchester, joined the team and led the development from ... Computer Aids for VLSI Design - Appendix D: Electronic Design Interchange Format by Steven M. Rubin ...
Hence, semiconductors form the basis of the traditional computer. This field also includes new areas of research such as ... From these semiconductor materials, things such as diodes, transistors, light-emitting diodes (LEDs), and analog and digital ... The prominent change in materials science during the recent decades is active usage of computer simulations to find new ...
Normally, an older computer and a few cables will suffice, and many PSK31 software applications are free. Many operators now ... and phase-modulated waveform that is converted to an audio frequency analog signal by a sound card. In the most-commonly-used ... So, once it has been set up to run PSK31, a computer can be used to explore a variety of digital message transmission modes. ... Because PSK31 was developed for use through a computer's sound card, many programs have since been created to use the same ...
Since 2001, NASA has used Aquarius for its NEEMO (NASA Extreme Environment Mission Operations) analog missions, sending groups ... Aquarius houses sophisticated lab equipment and computers, enabling scientists to perform research and process samples without ...
Mac E. Van Valkenburg (19 October 2001). Reference Data for Engineers: Radio, Electronics, Computers and Communications. ... Similar to dBFS, but also applicable to analog systems. According to ITU-T Rec. G.100.1 the level in dBov of a digital system ... Utilities : VRMS / dBm / dBu / dBV calculator, Analog Devices, retrieved 16 September 2016. .mw-parser-output cite.citation{ ...
In 2003, the company released the "Fossil Wrist PDA" wristwatch computer which is a tiny Palm OS-based PDA worn like a watch. ... Their analog smartwatches and connected jewelry span across their licensed brands such as Diesel, Emporio Armani, Michael Kors ... Computer Bags, Backpacks, Belts, and much more!. ...
At the start of analogue satellite TV broadcasts in the UK by BskyB, a 75 ohm cable referred to as RG6 was used. This cable had ... RG-62 is a 93 Ω coaxial cable originally used in mainframe computer networks in the 1970s and early 1980s (it was the cable ... In analog video or TV systems, this causes ghosting in the image. Reflections also introduce standing waves, which cause ... In 1980s and early 1990s coaxial cable was also used in computer networking, most prominently in Ethernet networks, where it ...
Application to a Set of Glucose Analogue Inhibitors of Glycogen Phosphorylase". Journal of Chemical Information and Computer ... Somsák L, Nagya V, Hadady Z, Docsa T, Gergely P (2003). "Glucose analog inhibitors of glycogen phosphorylases as potential ... Jul 1994). "The design of potential antidiabetic drugs: experimental investigation of a number of beta-D-glucose analogue ...
The Institut Pasteur in Paris features prominently in the terrorist-fiction eBook, The Madness Analog,[13] as the location for ... as a cover for stealing a molecular computer project being done there. ... "The Madness Analog: A Matt David Thriller". Proujan Editorial Services and Publishing / Amazon Digital Services. Retrieved ...
Computer models indicate that annual energy consumption can be reduced by 30 billion kWh using 100 million trees in U.S. urban ...
His approach was to set up "natural" experiments, and then to develop a set of comparative observations or analogs. This led to ... Mathematical, statistical, and computer sciences. 1960s. *1963: Norbert Wiener. *1964: Solomon Lefschetz ...
Since the end of the Second World War, the development of computers has allowed a systematic development of computational ... While most familiar phases deal with three-dimensional systems, it is also possible to define analogs in two-dimensional ... the chemical analogue of Newton in physics; who did more than any other to establish the new science on proper theoretical ... chemistry, which is the art of developing and applying computer programs for solving chemical problems. Theoretical chemistry ...
Because analog filters have relatively high cost and limited performance, relaxing the demands on the analog filter can greatly ... Michael Goesele (2004). New Acquisition Techniques for Real Objects and Light Sources in Computer Graphics. Books on Demand. p ... If the signal is strong enough, it can cause clipping at the analog-to-digital converter, even after filtering. When distortion ... Anti-aliasing filters are commonly used at the input of digital signal processing system's analog to digital converter; similar ...
Additionally, the discrete uniform distribution is commonly used in computer programs that make equal-probability random ... or the continuous analog thereof. ...
... the typical speed of a hard drive in an average desktop computer is 7200 RPM, whereas low-cost desktop computers may use 5900 ... Typically a DSP in the electronics inside the drive takes the raw analog voltages from the read head and uses PRML and Reed- ... "Ruggedized Disk Drives for Commercial Airborne Computer Systems" (PDF).. *^ Grabianowski, Ed. "How To Recover Lost Data from ... market application expanded from mainframe computers of the late 1950s to most mass storage applications including computers ...
An optical communication system transmitter consists of a digital-to-analog converter (DAC), a driver amplifier and a Mach- ... This type of communication can transmit voice, video, and telemetry through local area networks, computer networks, or across ... The information transmitted is typically digital information generated by computers, telephone systems and cable television ...
An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical ... In the early 1970s analog computer manufacturers tried to tie together their analog computer with a digital computer to get the ... Electronic analog computers[edit]. Electronic analog computers typically have front panels with numerous jacks (single-contact ... Harvard Robotics Laboratory Analog Computation. *The Enns Power Network Computer - an analog computer for the analysis of ...
An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical ... In the early 1970s analog computer manufacturers tried to tie together their analog computer with a digital computer to get the ... Timeline of analog computers[edit]. See also: History of computing hardware § Analog computers ... Harvard Robotics Laboratory Analog Computation. *The Enns Power Network Computer - an analog computer for the analysis of ...
... is an elegant model of analog computation in continuous time. In this paper, we consider whether the set G of GPAC-computable ... Shannons General Purpose Analog Computer (GPAC) is an elegant model of analog computation in continuous time. In this paper, ... "Iteration, Inequalities, and Differentiability in Analog Computers," Working Papers 99-07-043, Santa Fe Institute. ... Analog computation; recursion theory; iteration; differentially algebraic functions; primitive recursive functions; NEP fields ...
... from two computers at the same time, and switch between them?just curious... ... can the tft7020 samsung recieve both digital and analogue signals, ... can the tft7020 samsung recieve both digital and analogue signals, from two computers at the same time, and switch between them ...
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Analogue computers for specific processes, systems or devices, e.g. simulators [2013-01] ... Programming arrangements, e.g. plugboard for interconnecting functional units of the computer; Digital programming {(hybrid ... This group covers only computers specially adapted for electronic systems or devices ...
Analog Computer Studies of the ML-1 Power Plant One of 5 reports in the series: Aerojet-General Corporation Reports available ... Calamore, D. V.; Crimmins, D. R. & Tobey, E. Analog Computer Studies of the ML-1 Power Plant, report, March 1963; San Ramon, ...
However, an analog computer circuit was evolved which was used to solve the defining equations simultaneously. The circuitry is ... The refined kinetic equation and the analog computer solution on model of the system are discussed. The results of thirty ... The data from the computer runs verified the results of the earlier laboratory and pilot plant work. However, a much clearer ... computer simulated dis solutions are also presented, and the data are used to illustrate the effects of the process variables ...
The General Purpose Analog Computer (GPAC) is a mathematical model of analog computers first introduced in 1941 by Claude ... Although analog computers have fallen almost into oblivion due to emergence of the digital computer, the GPAC has recently been ... an early analog computer. Shannon defined the GPAC as an analog circuit consisting of five types of units: adders (which add ... The General Purpose Analog Computer was originally introduced by Claude Shannon. This model came as a result of his work on ...
Pre-surgical planning for cranial and facial reconstruction includes preparing a computer generated jaw or skull model for ... After the analogs are inserted in the jaw model, at each analog site attachments to each analog are made which will orient the ... 80 analogs were divided into groups of 4 analogs, including three of the prior art analog shown in FIG. 9 with one of the ... During the Laboratory procedure, an analog, for example a conventional prior art analog 900 shown in FIG. 9, or an analog of ...
Online Catalogue , Shop by Manufacturer , Manufacturers A-D , Crucible Tool , Crucible Tool Chairpanzee Analog Computer ...
Methods, systems, and apparatus, including computer programs encoded on computer storage media, for processing data ... First analog data is stored in the first memory cell, and ... WO/2017/155936A1 OPTICAL NITRATE SENSOR FOR MULTIPARAMETER WATER ... A computer system and method for improving the accuracy of predictions of the amount of renewable energy, such as solar energy ... ANALOG CO-PROCESSOR. A co-processor is configured for performing vector matrix multiplication (VMM) to solve computational ...
... img Modern analog computers can complement their digital counterparts in solving equations relevant to biology, fluid dynamics ... and I created a second-generation single-chip analog computer. As was the case with early analog computers, all blocks in our ... who designed mechanical analog computers for calculating tides. Analog computers of this sort remained in use for a long time ... But analog computers and digital-analog hybrids built with todays technology wouldnt suffer the same shortcomings, which is ...
Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal processing applications, will conduct ... Analog Devices India to conduct Live Webinar on Computer Vision Solutions: Webinar to provide insights into applications, ... a live webinar session (details enclosed below) on industrial applications critical for Computer Vision Solutions, that … ... Analog Devices is included in the S&P 500 Index.. Celebrating close to 20 years in India, Analog Devices has a well-established ...
Computers in the Cockpit; Digital Replaces Analog. June 6, 2009. by Dan Johnson Leave a Comment ... Analog instruments were made by many companies and became such commodities that you may not be able to name a brand. But as ... They admit their biggest competitor remains analog gauges but in "glass cockpits," the Washington state company appears to have ... computers entered our cockpits, first via GPS and later with multi-function displays, brands became better known. *** For this ...
... selecting from said computer expression a site on a G-CSF molecule for alteration; and (c) preparing a G-CSF molecule having ... providing computer expression of the three dimensional structure of a G-CSF molecule wherein the chemical moieties, such as ... Provided are computer-based methods for preparing G-CSF analogs involving (a) ... 1. A computer based method for preparing a G-CSF analog comprising the steps of:. (a) providing computer expression of the ...
Exponent assists at any stage of the IC process, from choosing the right process steps for desired device architecture to package design qualification. Our packaging expertise includes: hermetic packaging, wafer encapsulation, wafer level packaging, plastic mold packaging; wafer bonding, wire bonding, flip chip, die attach materials, chip on board, and COTS packaging.. At Exponent we have experience de-capping and de-processing ICs and using advanced metrology techniques to inspect the IC using optical and electron microscopy, focused ion beam (FIB) milling for cross-sectional analysis or energy dispersive spectroscopy (EDS) analysis. Alternatively, we can perform non-destructive cross-sectional analysis via 3D X-ray Computed Tomography (CT). We also routinely characterize IC performance on a probe station, a curve tracer, or other custom setup for advanced electrical testing in order to arrive at a desired solution. ...
Analog Computer Aided Design. Analog Circuit Design Operational Amplifiers, Analog to Digital Converters, Analog Computer Aided ... Analog Circuit Design Operational Amplifiers, Analog to Digital Converters, Analog Computer Aided Design with ISBN ... Part III, Analog Computer Aided Design , presents the latest research towards providing analog circuit designers with the tools ... This volume of Analog Circuit Design concentrates on three topics: Operational Amplifiers. A-to-D converters and Analog CAD. ...
A program was developed for a computer equipped with parallel logic elements. Experience with the system shows it to be a very ... The usefulness of a digitally controlled analog computer in studying digital detection systems was examined. ... Descriptors : (*DEMODULATORS, DIGITAL SYSTEMS), SIMULATORS, ANALOG COMPUTERS, COMPUTER LOGIC, SIGNALS, DETECTION, SAMPLING, ... Abstract : The usefulness of a digitally controlled analog computer in studying digital detection systems was examined. A ...
Additional Accessories for Computer-aided Experimentation , Cable for extending the length of analog BT sensor cables. Length: ... Cable for extending the length of analog BT sensor cables. Length: 5 m ...
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Jensen, C. B. (2017). Quantitative evaluation of peptide analogue distribution in mouse tissue using 3D computer modelling. ... Jensen, CB 2017, Quantitative evaluation of peptide analogue distribution in mouse tissue using 3D computer modelling. DTU ... Quantitative evaluation of peptide analogue distribution in mouse tissue using 3D computer modelling. / Jensen, Casper Bo. ... Quantitative evaluation of peptide analogue distribution in mouse tissue using 3D computer modelling. Technical University of ...
In this work, by adding memristors to the electrical network, we show that the analog computer can simulate a large variety of ... We will focus on analog computers based on active electrical networks comprised of resistors, capacitors, and operational ... We study the performance of these analog computers by simulating integro-differential models related to fluid dynamics, ... While these devices are usually computationally more powerful than their digital counterparts, they suffer from analog noise ...
Simulating physics with computers journal, June 1982 * Feynman, Richard P. * International Journal of Theoretical Physics, Vol ... Reliability of analog quantum simulation or: how I learnt to stop worrying and love parameter space compression.. Conference ... When can we trust an analog quantum simulator?.. Conference Sarovar, Mohan ; Zhang, Jun ; Zeng, Lishan ... title = {Reliability of analog quantum simulation},. author = {Sarovar, Mohan and Zhang, Jun and Zeng, Lishan},. abstractNote ...
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Several theoretical1,2 and experimental3-5 attempts have been made to use quantum computers to solve chemistry problems, with ... An analogue quantum simulator based on ultracold atoms in optical lattices and cavity quantum electrodynamics is proposed for ... Here we present an analogue approach to the simulation of quantum chemistry problems that relies on the careful combination of ... An appealing alternative to the digital approach is analogue quantum simulation, which does not require a scalable quantum ...
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The analogue range is from 0 to 5 VDC. Accuracy is within + / - 0.05 volts. This i ... Analogue Temperature Sensor provides real-time temperature values from -40° to 85° Celsius (-40° to 185° Fahrenheit) Accuracy ... This is a dynamic sensor that provides temperature and analog values every two seconds and feeds temperature and analog data in ... Youre reviewing: Temperature & Analogue Sensor. How do you rate this product? *. 1 star. 2 stars. 3 stars. 4 stars. 5 stars. ...
  • The advantage of analog computers lies on the computational power provided by real-time operation and complete parallelism, so that they require less resources than a digital counterpart for the simulation. (nature.com)
  • Here we present an analogue approach to the simulation of quantum chemistry problems that relies on the careful combination of two technologies: ultracold atoms in optical lattices and cavity quantum electrodynamics. (nature.com)
  • Our work opens up the possibility of efficiently computing the electronic structures of molecules with analogue quantum simulation. (nature.com)
  • Abstract-Analog synthesis tools have traditionally traded quality for speed, substituting simplified circuit evaluation methods for full simulation in order to accelerate the numerical search for solution candidates. (psu.edu)
  • Interactive Computer Simulation. (rand.org)
  • Simulation of a biological system on an analog computer. (rand.org)
  • There will be a particular focus on analogue quantum simulation and analogue gravity, however themes of discussion will also including broader topics including simulation, quantum computation and experimental validation. (bris.ac.uk)
  • 14.30 - 15.30 - Dominik Hangleiter (FU Berlin) - Prospectus to a philosophy of analogue quantum simulation. (bris.ac.uk)
  • Computer simulation of representative power system problems. (ucalgary.ca)
  • 2019. New Seed Laser Diode Driver from Analog Modules . (azooptics.com)
  • can the tft7020 samsung recieve both digital and analogue signals, from two computers at the same time, and switch between them? (tomshardware.com)
  • My HD television has an ATSC tuner and I would assume that means it will pick up analog signals and convert them to digital. (fixya.com)
  • Passive Analog Switch no supply necessary potential-free change over signals from 1mV up to 150V max. (hannovermesse.de)
  • The analog switch OT10 is suitable for non-contact switching of smallest signals up to 150V/100mA, without additional auxiliary energy. (hannovermesse.de)
  • Sure, a few use the video outputs, the s-video outputs, and so on but every one uses AND depends on standard analog broadcast television daily. (techdirt.com)
  • No more analog and the only option being $120+ per family per year or the purchase of 20 digital recievers with analog outputs. (techdirt.com)
  • [1] Systems for process control and protective relays used analog computation to perform control and protective functions. (wikipedia.org)
  • This is a list of examples of early computation devices which are considered to be precursors of the modern computers. (wikipedia.org)
  • This is a list of examples of early computation devices considered precursors of the modern computers. (wikipedia.org)
  • Shannon's General Purpose Analog Computer (GPAC) is an elegant model of analog computation in continuous time. (repec.org)
  • Here, I will focus on a different application of analog and hybrid computers: efficient scientific computation. (columbia.edu)
  • Zoltan Toroczkai and collaborators have been working toward developing a novel analog mathematical approach that will help advance computation beyond the digital framework. (nextbigfuture.com)
  • The General Purpose Analog Computer (GPAC) is a mathematical model of analog computers first introduced in 1941 by Claude Shannon. (wikipedia.org)
  • The Norden bombsight was a highly sophisticated optical/mechanical analog computer used by the United States Army Air Force during World War II , the Korean War , and the Vietnam War to aid the pilot of a bomber aircraft in dropping bombs accurately. (wikipedia.org)
  • An analog computer or analogue computer is a type of computer that uses the continuously changeable aspects of physical phenomena such as electrical , mechanical , or hydraulic quantities to model the problem being solved. (wikipedia.org)
  • The Antikythera mechanism was an orrery and is claimed to be an early mechanical analog computer, according to Derek J. de Solla Price . (wikipedia.org)
  • An astrolabe incorporating a mechanical calendar computer [5] [6] and gear -wheels was invented by Abi Bakr of Isfahan , Persia in 1235. (wikipedia.org)
  • The castle clock , a hydropowered mechanical astronomical clock invented by Al-Jazari in 1206, was the first programmable analog computer. (wikipedia.org)
  • In 1822, Babbage began design on the first mechanical computer, the Difference Engine, that eventually led to more complex electronic designs, though all the essential ideas of modern computers are to be found in Babbage's Analytical Engine. (wikipedia.org)
  • The differential analyser, a mechanical analog computer designed to solve differential equations by integration, used wheel-and-disc mechanisms to perform the integration. (wikipedia.org)
  • The GPAC can be implemented in practice through the use of mechanical devices or analog electronics. (wikipedia.org)
  • This mechanical analog computer was used for predicting tides. (columbia.edu)
  • Although some actually did use flowing fluids, most early analog computers were mechanical contraptions containing rotating wheels and gears. (columbia.edu)
  • These include Vannevar Bush's differential analyzer in 1931, constructed on principles that go back to the 19th century, chiefly to the work of William Thomson (who later became Lord Kelvin) and his brother James, who designed mechanical analog computers for calculating tides . (columbia.edu)
  • By the 1940s, electronic analog computers took off too, although the mechanical variety continued in use for some time. (columbia.edu)
  • An analog computer makes use of continuously changeable quantities of a system, such as its electrical, mechanical, or hydraulic properties, to solve a given problem. (nature.com)
  • Analog computers employ continuously tunable quantities of a system, such as its electrical, mechanical, or hydraulic properties, to codify and solve a given problem. (nature.com)
  • From slide rules to mechanical fire solution computers to electronic analog computers, there have been plenty of computers that don't work on 1s and 0s, but on analog quantities such as angle or voltage. (hackaday.com)
  • I'm right there with you, I love the combination mechanical (not really analog) face/hands, with an embedded digital display for date/alarm/etc. (slashdot.org)
  • Artificial intelligence (AI) is the field within computer science that seeks to explain and to emulate, through mechanical or computational processes, some or all aspects of human intelligence. (encyclopedia.com)
  • It is a hand-operated analog computer for doing multiplication and division. (wikipedia.org)
  • A slide-rule does multiplication and division in analog form, an electronic calculator or computer does them in digital form. (edge.org)
  • 3. The analog post of claim 2 in which said rod is textured on an outer surface thereof. (freepatentsonline.com)
  • 4. The analog post of claim 2 in which said rod has an axially extending groove in an outer surface thereof. (freepatentsonline.com)
  • In another aspect, the invention relates to computer programs and apparatuses for expressing the three dimensional structure of G-CSF and analogs thereof. (google.com.au)
  • The advent of digital computing made simple analog computers obsolete as early as the 1950s and 1960s, although analog computers remained in use in some specific applications, like the flight computer in aircraft , and for teaching control systems in universities. (wikipedia.org)
  • Analog computers were widely used in scientific and industrial applications even after the advent of digital computers, because at the time they were typically much faster, but they started to become obsolete as early as the 1950s and 1960s, although they remained in use in some specific applications, such as aircraft flight simulators , the flight computer in aircraft , and for teaching control systems in universities. (wikipedia.org)
  • Another factor in their downfall was that, by the 1960s, digital computers were making large strides, thanks to their many advantages: straightforward programmability, algorithmic operation, ease of storage, high precision, and an ability to handle problems of any size, given enough time. (columbia.edu)
  • Shannon defined the GPAC as an analog circuit consisting of five types of units: adders (which add their inputs), multipliers (which multiply their inputs), integrators, constant units (which always output the value 1), and constant multipliers (which always multiply their input by a fixed constant k). (wikipedia.org)
  • As an analog computer does not use discrete values, but rather continuous values, processes cannot be reliably repeated with exact equivalence, as they can with Turing machines . (wikipedia.org)
  • In contrast, digital computers represent varying quantities symbolically and by discrete values of both time and amplitude. (wikipedia.org)
  • Ermakov S.M., Pokhodzey B.B. (1987) Discrete analogue of the Neumann method is not optimal. (springer.com)
  • The Digital & Analogue Temperature Sensor provides real-time temperature values from -40° to 85° Celsius (-40° to 185° Fahrenheit) Accuracy is within + / - 0.5 degrees. (bticomputer.com)
  • This is a dynamic sensor that provides temperature and analog values every two seconds and feeds temperature and analog data in real-time data back to the Room Alert ID box for data logging, alerting and automatic corrective action. (bticomputer.com)
  • This workshop brings together physicists and philosophers interested in analogue experimentation in contemporary physics. (bris.ac.uk)
  • This volume of Analog Circuit Design concentrates on three topics: Operational Amplifiers. (valorebooks.com)
  • The result of this brainstorming is contained in Analog Circuit Design , which is thus an important reference for researchers and design engineers working in the forefront of analog circuit design and research.Huijsing, Johan H. is the author of 'Analog Circuit Design Operational Amplifiers, Analog to Digital Converters, Analog Computer Aided Design' with ISBN 9780792392880 and ISBN 0792392884. (valorebooks.com)
  • We will focus on analog computers based on active electrical networks comprised of resistors, capacitors, and operational amplifiers which are capable of simulating any linear ordinary differential equation. (nature.com)
  • An electrical analog computer is an active network composed of electrical elements, namely, resistors, capacitors and operational amplifiers which, connected together, are capable of simulating any set of linear ordinary differential equations 7 . (nature.com)
  • It investigates the performance characteristics of semiconductor devices and functional analog building blocks, including single stage amplifiers, op amps, small audio amplifier, filters, switch mode power. (bextselfreset.com)
  • To develop analytical skills in obtaining the high frequency response of BJT and FET analog amplifiers. (rutgers.edu)
  • All audio amplifiers are analog. (slashdot.org)
  • Although analog computers have fallen almost into oblivion due to emergence of the digital computer, the GPAC has recently been studied as a way to provide evidence for the physical Church-Turing thesis. (wikipedia.org)
  • The Antikythera mechanism , dating between 150 and 100 BC, was an early analog computer. (wikipedia.org)
  • This model came as a result of his work on Vannevar Bush's differential analyzer, an early analog computer. (wikipedia.org)
  • Jensen, CB 2017, Quantitative evaluation of peptide analogue distribution in mouse tissue using 3D computer modelling . (dtu.dk)
  • Preparation of Selenoinsulin as a Long-Lasting Insulin Analogue, Angewandte Chemie International Edition (2017). (phys.org)
  • The National Institute of Standards and Technology is working with many companies and researchers to provide security for financial information and privacy when there are quantum computers powerful enough to break current encryption. (nextbigfuture.com)
  • 2. The analog post of claim 1 wherein said fixed wing comprises a rod extending less that a full length of said pin. (freepatentsonline.com)
  • 5. The analog post of claim 1 wherein said pin has a pair of wings on opposite sides of said pin. (freepatentsonline.com)
  • 6. The analog post of claim 1 wherein said pin has multiple wings spaced along and around the outer surface of said pin. (freepatentsonline.com)
  • 2. A method of claim 1 wherein said computer expression allows for display of the amino acids of said G-CSF molecule. (google.com.au)
  • 3. A method of claim 1 wherein said computer expression allows for display of each atom of said G-CSF molecule. (google.com.au)
  • I believe that modern analog computers can complement their digital counterparts in solving equations relevant to biology, fluid dynamics, weather prediction, quantum chemistry, plasma physics, and many other scientific fields. (columbia.edu)
  • Feynman, R. P. Simulating physics with computers. (nature.com)
  • Running an electronic analog computer, assuming a satisfactory setup, started with the computer held with some variables fixed at their initial values. (wikipedia.org)
  • Known as "Old Brass Brains" (or more formally, Tide-Predicting Machine No. 2), it served the U.S. Coast and Geodetic Survey in the calculation of tide tables beginning in 1912 and was not retired until 1965, when it was replaced with an electronic computer. (columbia.edu)
  • This electronic analog computer, the PACE 16-31R, manufactured by Electronic Associates Inc., was installed at NASA's Lewis Flight Propulsion Laboratory (now called the Glenn Research Center), in Cleveland, in the mid-1950s. (columbia.edu)
  • Electronic analog computers initially contained hundreds or thousands of vacuum tubes, later replaced by transistors. (columbia.edu)
  • Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. (mcadcafe.com)
  • begingroup$ I saw a large, electronic analog computer being torn down in the late 1980 having finally been supplanted by digital systems for certain fluid flow problems. (stackexchange.com)
  • Analog electronic systems. (bextselfreset.com)
  • Analog Electronics Lab Introductory experimental laboratory explores the design, construction, and debugging of analog electronic circuits. (bextselfreset.com)
  • For an electronic analog computer, the op-amp was the main processing element. (hackaday.com)
  • Establishments primarily engaged in manufacturing electronic computers. (osha.gov)
  • You'll be equipped with the programming skills and the practical skills you need to combine software and hardware that will enable you to integrate computer systems into a wide range of electronic systems. (ncl.ac.uk)
  • Analog Modules, developer of electronic products for electro-optic and laser industries, has launched a new Seed laser diode driver. (azooptics.com)
  • But can I do something like create this constant current source (not sure how to do or how to say), multiplex that to the cables and use an analog input of arduino to measure the voltage, then use some math (calibration) or a lookup table to convert to temp. (yahoo.com)
  • A-to-D converters and Analog CAD. (valorebooks.com)
  • Analog to Digital converters provide the link between the analog world of transducers and the digital world of signal processing and computing. (valorebooks.com)
  • The usefulness of a digitally controlled analog computer in studying digital detection systems was examined. (dtic.mil)
  • They would be analog computers if implemented directly, rather than digitally simulated, Wikipedia gives some history . (stackexchange.com)
  • Ken Shirriff] is working to restore an analog computer from around 1969 provided by [CuriousMarc]. (hackaday.com)
  • The PDP8/E, one of the models in the PDP/8 line of the first successful "mini-computers," was introduced in 1965. (nih.gov)
  • After several rounds of improvements on the basic model, the PDP-8, launched in 1965, would prove to be a bestseller in the field of mini-computers. (nih.gov)
  • Many people don't realize, though, that an important ingredient in the success of the Apollo missions and their predecessors were analog and hybrid (analog-digital) computers, which NASA used for simulations and in some cases even flight control. (columbia.edu)
  • Could analog computing accelerate complex computer simulations? (carbonproduct.net)
  • It's also like saying that we aren't going to sell home computers because a few people got spooked by HAL in 2001. (techdirt.com)
  • The process requires capturing accurate root geometry through combined computer-aided design/computer-assisted manufacturing (CAD/CAM) and a three-dimensional (3D) visualization (digital volume tomography [DVT]) of the tooth in situ, which might result in reduced remodeling after insertion. (nih.gov)
  • Unlike digital signal processing , analog computers do not suffer from the quantization noise , but are limited by analog noise . (wikipedia.org)
  • Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal processing applications, will conduct a live webinar session (details enclosed below) on industrial applications critical for Computer Vision Solutions, that enable products to "see" and respond intelligently by accelerating image detection and analysis with camera input or within the camera. (mcadcafe.com)
  • Rajesh Mahapatra is a Senior Engineering Manager at Analog Devices with over two decades of experience in software product development in the area of Digital Signal Processing. (mcadcafe.com)
  • Analog Devices India Product Development Center (IPDC), Bangalore is involved in some of the most challenging designs today, including complex Application Specific Standard Products (ASSPs), high performance DSPs, Analog/Mixed Signal ICs, and embedded software that powers these semiconductor chips. (mcadcafe.com)
  • The team at IPDC has developed Multi-generation of industry leading SHARC® processors and Blackfin® products, Signal processing ASICs for Inertial MEMS, advanced analog and mixed signal products. (mcadcafe.com)
  • I know you need an ATSC tuner to convert an analog signal to a digital signal. (fixya.com)
  • When hooked it up to my old analog television, I could receive stations that broadcast in high definition, (because HD is a digital signal). (fixya.com)
  • In this case, the solutions of these equations are encoded into the time evolution of the voltage waveform produced by the analog computer. (nature.com)
  • In this work, by adding memristors to the electrical network, we show that the analog computer can simulate a large variety of linear and nonlinear integro-differential equations by carefully choosing the conductance and the dynamics of the memristor state variable. (nature.com)
  • Kevin Fu, Associate Professor in Electrical Engineering and Computer Science, University of Michigan. (cam.ac.uk)
  • What do electrical and computer systems engineers do? (monash.edu)
  • Monash will give you the hands-on training and theoretical insight you need for an exciting future as an electrical and computer systems engineer. (monash.edu)
  • 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. (monash.edu)
  • The Electrical and Computer Engineering Department is listed in the top 100 college departments according to U.S. News & World Report, and it brings in approximately $2 million in research funding annually. (usu.edu)
  • While these devices are usually computationally more powerful than their digital counterparts, they suffer from analog noise which does not allow for error control. (nature.com)
  • In contrast to the large mainframe computers typical of the time, the LINC could fit into eight square feet of space, and its components could be arranged in a variety of ways to make use of small amounts of precious bench space. (nih.gov)
  • The participants will be provided a comprehensive insight into the tried and tested approach for building software on the ADSP-BF609 and an in-depth perspective on five imaging tool boxes developed by Analog Devices for faster delivery of customised computer vision applications to the market. (mcadcafe.com)
  • He has been with Analog Devices India Pvt. (mcadcafe.com)
  • Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. (mcadcafe.com)
  • Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. (mcadcafe.com)
  • Analog Devices is included in the S&P 500 Index. (mcadcafe.com)
  • Celebrating close to 20 years in India, Analog Devices has a well-established sales and distribution network across India serving and supporting design teams of Multi-National companies (MNCs), Indian Original Equipment Manufacturer (OEM)s and Independent Design Houses across several segments including Industrial, Healthcare, Defense, Automotive and Consumer. (mcadcafe.com)
  • An expert team of application engineers well versed in system design and the value proposition of Analog Devices products and solutions engage and support a growing customer base in India. (mcadcafe.com)
  • Analog Devices is buying Maxim Integrated. (thestreet.com)
  • Maxim stockholders will receive 0.630 a share of Analog Devices common stock under the deal. (thestreet.com)
  • Analog Devices rose 1.47% to $126.33. (thestreet.com)
  • All of these devices are fun "what ifs", but using them on anything but your own computers is not cool and possibly dangerous. (hackaday.com)
  • For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. (analog.com)
  • Note that these analog computers survived many years after the advent of digital computers. (stackexchange.com)
  • We study the performance of these analog computers by simulating integro-differential models related to fluid dynamics, nonlinear Volterra equations for population growth, and quantum models describing non-Markovian memory effects, among others. (nature.com)
  • The refined kinetic equation and the analog computer solution on model of the system are discussed. (unt.edu)
  • A computer system and method for improving the accuracy of predictions of the amount of renewable energy, such as solar energy and wind energy, available to an electric utility, and/or refine such predictions, by providing improved integ. (sumobrain.com)
  • An analog computer is a physical system configured so that it is governed by equations identical to the ones you want to solve. (columbia.edu)
  • You impose initial conditions corresponding to those in the system you want to investigate and then allow the variables in the analog computer to evolve with time. (columbia.edu)
  • Usually, the dynamics of an analog computer perfectly matches the dynamics of the simulated system. (nature.com)
  • Choose a base station to suit your company's telephony environment, SIP or analog, or connect to an installed DECT system. (konftel.com)
  • Frequency Response of an analog system? (physicsforums.com)
  • Interactive Computer Elucidation of a Biological System. (rand.org)
  • begingroup$ I do not know about now but back in the early 1980s, our company deployed an Energy Management System to a large electric utility in Texas and part of our system was replacing older analog computers that were used for automatic generation control and economic generation scheduling applications. (stackexchange.com)
  • In this paper, we propose a class of false analog data injection attack that can misguide the system as if topology errors had occurred. (arxiv.org)
  • The attack is detrimental to the system since manipulation of analog data will lead to a forged digital topology status, and the state after the error is identified and modified will be significantly biased with the intended wrong topology. (arxiv.org)
  • Kontakt & Copyright This download analysis of normal and abnormal cell growth model system formulations and analog discovered asked on the reviews young forecasting type resistance was The sure resolution. (claudiabrefeld.de)
  • When offered what download analysis of normal and abnormal cell growth model system formulations and analog computer studies of information outbreaks, if Presented elusive to short insider lesions and Macs in Canada, would most account the Combination of doing sensible users cases invested thereafter a Hispanic versatility of students and lakes for using s pre-installs. (claudiabrefeld.de)
  • Disclosed is a method of obtaining data to determine a rotation matrix R, for rotating the axes (x,y,z) of an analogue probe coordinate system (PCS) onto the axes (X,Y,Z) of a machine coordinate system (MCS). (google.com)
  • The wiring system of the computer is a substitute for the axons and synapses of the brain. (edge.org)
  • Don't be fooled by its size, the Omega2 is a full computer running Linux, the same operating system that powers some of the world's most mission-critical infrastructure. (kickstarter.com)
  • Settings can be made via analog function by utilizing multi-turn potentiometers or via the FPGA that features a complete pulse generation system. (azooptics.com)
  • However, an analog computer circuit was evolved which was used to solve the defining equations simultaneously. (unt.edu)
  • 60 graphical processing units (GPUs) have been used to solve the Google quantum supremacy computer problem. (nextbigfuture.com)
  • Rutherford journal gives a nice chronology of analog computing up to 1970 , when they went out of mass use. (stackexchange.com)
  • In another aspect, the present invention relates to nucleic acids encoding the present analogs or related nucleic acids, related host cells and vectors. (google.com.au)
  • In yet another aspect, the present invention relates to methods for treatment using the present G-CSF analogs. (google.com.au)
  • The computer generated jaw or skull model is made from medical imagery and computer aided design. (freepatentsonline.com)
  • And none other than Claude Shannon , the father of formal digital design theory, published a seminal theoretical treatment of analog computing in 1941. (columbia.edu)
  • These papers have a tutorial nature aimed at improving the design of analog circuits. (valorebooks.com)
  • Part III, Analog Computer Aided Design , presents the latest research towards providing analog circuit designers with the tools needed to automate much of the design process. (valorebooks.com)
  • The techniques and methodologies described demonstrate the advances being made in developing analog design tools comparable with those already available for digital design. (valorebooks.com)
  • The papers in this volume are based on those presented at the Workshop on Advances in Analog Circuit Design held in Delft, The Netherlands in 1992. (valorebooks.com)
  • The main intention of the workshop was to brainstorm with a group of about 100 analog design experts on the new possibilities and future developments on the above topics. (valorebooks.com)
  • Analog Integrated Circuit Design Author/s: Tony Chan, Carusone David A. Johns, Kenneth W. Martin Publisher: Wiley This book strives to quash the notion that the design and test of high-performance analog circuits are "mys-tical arts. (bextselfreset.com)
  • The term "electronics" covers a lot of territory, but we should know what to expect in An Analog Electronics Companion: Basic Circuit Design for Engineers and Scientists from its subtitle. (bextselfreset.com)
  • Aside from living relics there has been something of a resurgence in the use of analog computing in the last 10 years however. (stackexchange.com)
  • The reintroduction of one of the most iconic films is supported by the growing popularity of analog photography and a resurgence in shooting film. (dpreview.com)
  • Resurgence in the popularity of analog photography has created demand for new and old film products alike. (dpreview.com)
  • For the Atari 8-bit computer magazine, see ANALOG Computing . (wikipedia.org)
  • More complex applications, such as synthetic aperture radar , remained the domain of analog computing well into the 1980s, since digital computers were insufficient for the task. (wikipedia.org)
  • But analog computers and digital-analog hybrids built with today 's technology wouldn't suffer the same shortcomings, which is why significant work is now going on in analog computing in the context of machine learning, machine intelligence, and biomimetic circuits. (columbia.edu)
  • On the other hand, the accuracy of an analog computer is limited by its computing elements and by the quality of its analog components. (nature.com)
  • Here, however, I contend that escape room games can be viewed as a platform of analog computing. (analoggamestudies.org)
  • When it comes to analog game platforms, however, there are no such standardized computing components as chips and circuits. (analoggamestudies.org)
  • Significant work is underway in analog computing in the context of machine learning, machine intelligence, and biomimetic circuits. (acm.org)
  • I looked on CS SE, and their discussions of analog computing suggest that this type of question would not be a good fit there. (stackexchange.com)
  • Computer scientists worldwide are exploring analog computing under such names as amorphous computing, unconventional computing, computing with bulk matter, non-silicon computing and other designations. (bextselfreset.com)
  • To take a ludicrously simple example, you could consider a hose and a bucket as an analog computer, one that performs the integration function of calculus. (columbia.edu)
  • Actually, after saying this, for testing, I think I could just make a breakout of the DB9 connection and plug those pins into an analog port of the Arduino to see what I can see. (yahoo.com)
  • Throughout the degree you will develop skills in Java, C and Python and will gain experience programming microcontrollers and computers, such as the Arduino and Raspberry Pi. (ncl.ac.uk)
  • Pre-surgical planning for cranial and facial reconstruction includes preparing a computer generated jaw or skull model for determining a locational position for a dental implant, a surgical bone implant to repair missing bone in the cranium, install ear prostheses, and/or install nose prostheses. (freepatentsonline.com)
  • The goal of this study was to explore an innovative approach to single-tooth replacement using an individually custom-fabricated, root-analog, hybrid dental implant, in the esthetic zone, to avoid the microgap and micromovements between the implant and abutment. (nih.gov)
  • The use of a root-shaped tooth analog implant might be in selected cases a viable alternative to current threaded cylindrical and cone-shaped implants. (nih.gov)
  • Here's how these unconventional computers could do that. (columbia.edu)
  • The results of thirty computer simulated dis solutions are also presented, and the data are used to illustrate the effects of the process variables on the Zirflex dissolution time cycle. (unt.edu)
  • The data from the computer runs verified the results of the earlier laboratory and pilot plant work. (unt.edu)
  • However, a much clearer view of the process is presented with the continuous graphs of the variables prepared from the computer data. (unt.edu)
  • To provide a semiconductor device including a first memory cell for holding first analog data, a second memory cell for holding reference analog data, and an offset circuit. (sumobrain.com)
  • The Laboratory Instrument Computer (LINC), developed at MIT in 1963 by Wesley A. Clark and Dr. Charles E. Molnar, was revolutionary not for its circuitry, but for its new data storage medium: small, portable data tapes, allowing each user to have a personal record of their data and programs. (nih.gov)
  • I've had combo analog/digital watches almost continuously since I was about 10. (slashdot.org)
  • In contrast, digital computers represent varying quantities symbolically, as their numerical values change. (wikipedia.org)
  • These Embedded Vision Systems are applicable in wide range of products and the webinar will focus on some common industrial applications that need computer vision techniques like Occupancy Sensing for energy saving, Face Detection as a precursor to face recognition used for retail advertisements and video surveillance and defect detection and sorting on the factory assembly floor. (mcadcafe.com)
  • The webinar will deep dive into the salient features of dual core DSP processor ADSP-BF609 that includes a pipelined video pre-processor to run applications for Computer Vision systems. (mcadcafe.com)
  • Text's purpose is to present the fundamental principles of using the analog computer as a tool in the solution and analysis of engineering systems. (firebaseapp.com)
  • Computer engineering students study to become engineers in software and computer hardware and receive training in preparation for careers in these fields. (usu.edu)
  • Graduates in computer engineering can work for any company or organization that requires software or hardware engineers. (usu.edu)
  • Given the current reliance on computer technology in the workplace, this means that many companies require computer engineers. (usu.edu)
  • Finally, we perform stability tests by considering imperfect analog components, obtaining robust solutions with up to 13% relative error for relevant timescales. (nature.com)
  • The PDP models were based on the TX-0, a computer developed for hands-on laboratory use by Wesley A. Clark and Dr. Charles E. Molnar of MIT, members of the same team that designed the LINC. (nih.gov)
  • Alice Hutchings, Computer Laboratory, University of Cambridge. (cam.ac.uk)
  • Sam Ainsworth, Computer Laboratory, University of Cambridge. (cam.ac.uk)
  • Sergio Pastrana/Andrew Caines, Computer Laboratory, University of Cambridge. (cam.ac.uk)
  • Also don't forget that, for laptops, the USB ports aren't physically isolated in a significant way from the rest of the computer so the port becomes a spray head. (hackaday.com)
  • Many users are reporting significant improvements with the latest Yggy updates (Analog 2 output, Gen5 USB). (computeraudiophile.com)
  • 6 edition of Analog and computer electronics for scientists found in the catalog. (bextselfreset.com)
  • Analog and Computer Electronics for Scientists, renamed to reflect the book's change in emphasis from digital to computer electronics, goes on to provide a solid grounding in computer peripherals―from keyboards, hard disks, and various forms of mass storage to. (bextselfreset.com)
  • Many of the scientists had no prior training in computer programming or circuitry, but all learned enough over the course of a month to assemble the machines in their labs and operate them without help. (nih.gov)