A mechanism of communication within a system in that the input signal generates an output response which returns to influence the continued activity or productivity of that system.
A mechanism of information stimulus and response that may control subsequent behavior, cognition, perception, or performance. (From APA Thesaurus of Psychological Index Terms, 8th ed.)
A mechanism of communicating one's own sensory system information about a task, movement or skill.
A principle that learning is facilitated when the learner receives immediate evaluation of learning performance. The concept also hypothesizes that learning is facilitated when the learner is promptly informed whether a response is correct, and, if incorrect, of the direction of error.
The therapy technique of providing the status of one's own AUTONOMIC NERVOUS SYSTEM function (e.g., skin temperature, heartbeats, brain waves) as visual or auditory feedback in order to self-control related conditions (e.g., hypertension, migraine headaches).
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.
The intracellular transfer of information (biological activation/inhibition) through a signal pathway. In each signal transduction system, an activation/inhibition signal from a biologically active molecule (hormone, neurotransmitter) is mediated via the coupling of a receptor/enzyme to a second messenger system or to an ion channel. Signal transduction plays an important role in activating cellular functions, cell differentiation, and cell proliferation. Examples of signal transduction systems are the GAMMA-AMINOBUTYRIC ACID-postsynaptic receptor-calcium ion channel system, the receptor-mediated T-cell activation pathway, and the receptor-mediated activation of phospholipases. Those coupled to membrane depolarization or intracellular release of calcium include the receptor-mediated activation of cytotoxic functions in granulocytes and the synaptic potentiation of protein kinase activation. Some signal transduction pathways may be part of larger signal transduction pathways; for example, protein kinase activation is part of the platelet activation signal pathway.
Relatively permanent change in behavior that is the result of past experience or practice. The concept includes the acquisition of knowledge.
A technique to self-regulate brain activities provided as a feedback in order to better control or enhance one's own performance, control or function. This is done by trying to bring brain activities into a range associated with a desired brain function or status.
The coordination of a sensory or ideational (cognitive) process and a motor activity.
The act, process, or result of passing from one place or position to another. It differs from LOCOMOTION in that locomotion is restricted to the passing of the whole body from one place to another, while movement encompasses both locomotion but also a change of the position of the whole body or any of its parts. Movement may be used with reference to humans, vertebrate and invertebrate animals, and microorganisms. Differentiate also from MOTOR ACTIVITY, movement associated with behavior.
Computer-based representation of physical systems and phenomena such as chemical processes.
Elements of limited time intervals, contributing to particular results or situations.
Sensory functions that transduce stimuli received by proprioceptive receptors in joints, tendons, muscles, and the INNER EAR into neural impulses to be transmitted to the CENTRAL NERVOUS SYSTEM. Proprioception provides sense of stationary positions and movements of one's body parts, and is important in maintaining KINESTHESIA and POSTURAL BALANCE.
The physiological mechanisms that govern the rhythmic occurrence of certain biochemical, physiological, and behavioral phenomena.
The regular recurrence, in cycles of about 24 hours, of biological processes or activities, such as sensitivity to drugs and stimuli, hormone secretion, sleeping, and feeding.
The educational process of instructing.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
Theoretical representations that simulate the behavior or activity of the neurological system, processes or phenomena; includes the use of mathematical equations, computers, and other electronic equipment.
The capability to perform acceptably those duties directly related to patient care.
The sounds produced by humans by the passage of air through the LARYNX and over the VOCAL CORDS, and then modified by the resonance organs, the NASOPHARYNX, and the MOUTH.
The assessing of academic or educational achievement. It includes all aspects of testing and test construction.
The properties, processes, and behavior of biological systems under the action of mechanical forces.
Basic helix-loop-helix (bHLH) domain-containing proteins that contain intrinsic HISTONE ACETYLTRANSFERASE activity and play important roles in CIRCADIAN RHYTHM regulation. Clock proteins combine with Arntl proteins to form heterodimeric transcription factors that are specific for E-BOX ELEMENTS and stimulate the transcription of several E-box genes that are involved in cyclical regulation. This transcriptional activation also sets into motion a time-dependent feedback loop which in turn down-regulates the expression of clock proteins.
A self-learning technique, usually online, involving interaction of the student with programmed instructional materials.
The assessment of the functioning of an employee in relation to work.
Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation.
A major gonadotropin secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Luteinizing hormone regulates steroid production by the interstitial cells of the TESTIS and the OVARY. The preovulatory LUTEINIZING HORMONE surge in females induces OVULATION, and subsequent LUTEINIZATION of the follicle. LUTEINIZING HORMONE consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is common in the three pituitary glycoprotein hormones (TSH, LH and FSH), but the beta subunit is unique and confers its biological specificity.
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
The selecting and organizing of visual stimuli based on the individual's past experience.
The time from the onset of a stimulus until a response is observed.
The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.
The application of electronic, computerized control systems to mechanical devices designed to perform human functions. Formerly restricted to industry, but nowadays applied to artificial organs controlled by bionic (bioelectronic) devices, like automated insulin pumps and other prostheses.
Endogenous substances, usually proteins, which are effective in the initiation, stimulation, or termination of the genetic transcription process.
The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.
NEURONS in the inner nuclear layer of the RETINA that synapse with both the RETINAL PHOTORECEPTOR CELLS and the RETINAL BIPOLAR CELLS, as well as other horizontal cells. The horizontal cells modulate the sensory signal.
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.
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.
Recording of the changes in electric potential of muscle by means of surface or needle electrodes.
A POSTURE in which an ideal body mass distribution is achieved. Postural balance provides the body carriage stability and conditions for normal functions in stationary position or in movement, such as sitting, standing, or walking.
The portion of an interactive computer program that issues messages to and receives commands from a user.
The processes whereby the internal environment of an organism tends to remain balanced and stable.
Circadian rhythm signaling proteins that influence circadian clock by interacting with other circadian regulatory proteins and transporting them into the CELL NUCLEUS.
The acoustic aspects of speech in terms of frequency, intensity, and time.
A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.
The distal part of the arm beyond the wrist in humans and primates, that includes the palm, fingers, and thumb.
The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian).
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 superior part of the upper extremity between the SHOULDER and the ELBOW.
The detailed examination of observable activity or behavior associated with the execution or completion of a required function or unit of work.
A dimension of auditory sensation varying with cycles per second of the sound stimulus.
Sensation of making physical contact with objects, animate or inanimate. Tactile stimuli are detected by MECHANORECEPTORS in the skin and mucous membranes.
A procedure consisting of a sequence of algebraic formulas and/or logical steps to calculate or determine a given task.
A meshlike structure composed of interconnecting nerve cells that are separated at the synaptic junction or joined to one another by cytoplasmic processes. In invertebrates, for example, the nerve net allows nerve impulses to spread over a wide area of the net because synapses can pass information in any direction.
The measurement of frequency or oscillation changes.
A collection of NEURONS, tracts of NERVE FIBERS, endocrine tissue, and blood vessels in the HYPOTHALAMUS and the PITUITARY GLAND. This hypothalamo-hypophyseal portal circulation provides the mechanism for hypothalamic neuroendocrine (HYPOTHALAMIC HORMONES) regulation of pituitary function and the release of various PITUITARY HORMONES into the systemic circulation to maintain HOMEOSTASIS.
Biological mechanism that controls CIRCADIAN RHYTHM. Circadian clocks exist in the simplest form in cyanobacteria and as more complex systems in fungi, plants, and animals. In humans the system includes photoresponsive RETINAL GANGLION CELLS and the SUPRACHIASMATIC NUCLEUS that acts as the central oscillator.
The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety.
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.
The process by which the nature and meaning of tactile stimuli are recognized and interpreted by the brain, such as realizing the characteristics or name of an object being touched.
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.
Use of sound to elicit a response in the nervous system.
Sense of movement of a part of the body, such as movement of fingers, elbows, knees, limbs, or weights.
The study of systems which respond disproportionately (nonlinearly) to initial conditions or perturbing stimuli. Nonlinear systems may exhibit "chaos" which is classically characterized as sensitive dependence on initial conditions. Chaotic systems, while distinguished from more ordered periodic systems, are not random. When their behavior over time is appropriately displayed (in "phase space"), constraints are evident which are described by "strange attractors". Phase space representations of chaotic systems, or strange attractors, usually reveal fractal (FRACTALS) self-similarity across time scales. Natural, including biological, systems often display nonlinear dynamics and chaos.
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.
Nerve structures through which impulses are conducted from a peripheral part toward a nerve center.
Neural tracts connecting one part of the nervous system with another.
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 rate dynamics in chemical or physical systems.
Communication through a system of conventional vocal symbols.
Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.
Computer systems utilized as adjuncts in the treatment of disease.
Sounds used in animal communication.
DNA sequences which are recognized (directly or indirectly) and bound by a DNA-dependent RNA polymerase during the initiation of transcription. Highly conserved sequences within the promoter include the Pribnow box in bacteria and the TATA BOX in eukaryotes.
Basic helix-loop-helix (bHLH) domain-containing proteins that play important roles in CIRCADIAN RHYTHM regulation. They combine with CLOCK PROTEINS to form heterodimeric transcription factors that are specific for E-BOX ELEMENTS and stimulate the transcription of several E-box genes that are involved in cyclical regulation.
Use of electric potential or currents to elicit biological responses.
A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles.
The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids.
The position or attitude of the body.
Individuals enrolled in a school of medicine or a formal educational program in medicine.
Flavoproteins that function as circadian rhythm signaling proteins in ANIMALS and as blue-light photoreceptors in PLANTS. They are structurally-related to DNA PHOTOLYASES and it is believed that both classes of proteins may have originated from an earlier protein that played a role in protecting primitive organisms from the cyclical exposure to UV LIGHT.
Performance of complex motor acts.

Post-ingestive feedbacks and associative learning regulate the intake of unsuitable sterols in a generalist grasshopper. (1/3981)

Behavioural studies of the grasshopper Schistocerca americana were undertaken to identify the mechanisms that regulate the intake of dietary sterols. In the first experiment, grasshoppers were allowed to feed on spinach, a plant containing only unsuitable sterols; immediately after this first meal, a suitable or unsuitable sterol was injected into the haemolymph. Grasshoppers injected with unsuitable sterols had second meals on spinach that were significantly shorter than those of grasshoppers injected with suitable sterols, indicating that unsuitable dietary sterols are detected post-ingestively. In the second experiment, grasshoppers were fed food containing only unsuitable sterols and were then presented with glass-fibre discs containing different concentrations of a suitable sterol or sucrose only (the control). The results suggest that grasshoppers do not use a direct feedback operating on mouthpart chemoreceptors to regulate their intake of suitable sterols. In the third experiment, grasshoppers were presented with artificial diets containing different sterols and flavours, and feeding was observed over a sequence of meals. The results from both the first and last experiments suggest a role for associative learning in regulating the intake of unsuitable sterols.  (+info)

Association of snRNA genes with coiled bodies is mediated by nascent snRNA transcripts. (2/3981)

BACKGROUND: Coiled bodies are nuclear organelles that are highly enriched in small nuclear ribonucleoproteins (snRNPs) and certain basal transcription factors. Surprisingly, coiled bodies not only contain mature U snRNPs but also associate with specific chromosomal loci, including gene clusters that encode U snRNAs and histone messenger RNAs. The mechanism(s) by which coiled bodies associate with these genes is completely unknown. RESULTS: Using stable cell lines, we show that artificial tandem arrays of human U1 and U2 snRNA genes colocalize with coiled bodies and that the frequency of the colocalization depends directly on the transcriptional activity of the array. Association of the genes with coiled bodies was abolished when the artificial U2 arrays contained promoter mutations that prevent transcription or when RNA polymerase II transcription was globally inhibited by alpha-amanitin. Remarkably, the association was also abolished when the U2 snRNA coding regions were replaced by heterologous sequences. CONCLUSIONS: The requirement for the U2 snRNA coding region indicates that association of snRNA genes with coiled bodies is mediated by the nascent U2 RNA itself, not by DNA or DNA-bound proteins. Our data provide the first evidence that association of genes with a nuclear organelle can be directed by an RNA and suggest an autogenous feedback regulation model.  (+info)

Bcl-2 regulates amplification of caspase activation by cytochrome c. (3/3981)

Caspases, a family of specific proteases, have central roles in apoptosis [1]. Caspase activation in response to diverse apoptotic stimuli involves the relocalisation of cytochrome c from mitochondria to the cytoplasm where it stimulates the proteolytic processing of caspase precursors. Cytochrome c release is controlled by members of the Bcl-2 family of apoptosis regulators [2] [3]. The anti-apoptotic members Bcl-2 and Bcl-xL may also control caspase activation independently of cytochrome c relocalisation or may inhibit a positive feedback mechanism [4] [5] [6] [7]. Here, we investigate the role of Bcl-2 family proteins in the regulation of caspase activation using a model cell-free system. We found that Bcl-2 and Bcl-xL set a threshold in the amount of cytochrome c required to activate caspases, even in soluble extracts lacking mitochondria. Addition of dATP (which stimulates the procaspase-processing factor Apaf-1 [8] [9]) overcame inhibition of caspase activation by Bcl-2, but did not prevent the control of cytochrome c release from mitochondria by Bcl-2. Cytochrome c release was accelerated by active caspase-3 and this positive feedback was negatively regulated by Bcl-2. These results provide evidence for a mechanism to amplify caspase activation that is suppressed at several distinct steps by Bcl-2, even after cytochrome c is released from mitochondria.  (+info)

A strategy for enhancing the transcriptional activity of weak cell type-specific promoters. (4/3981)

Cell type- and tissue-specific promoters play an important role in the development of site-selective vectors for gene therapy. A large number of highly specific promoters has been described, but their applicability is often hampered by their inefficient transcriptional activity. In this study, we describe a new strategy for enhancing the activity of weak promoters without loss of specificity. The basic principle of this strategy is to establish a positive feedback loop which is initiated by transcription from a cell type-specific promoter. This was achieved by using a cell type-specific promoter to drive the simultaneous expression of the desired effector/reporter gene product and a strong artificial transcriptional activator which stimulates transcription through appropriate binding sites in the promoter. Using a VP16-LexA chimeric transcription factor, we show that this approach leads to a 14- to > 100-fold enhancement of both the endothelial cell-specific von Willebrand factor promoter and the gastrointestinal-specific sucrase-isomaltase promoter while maintaining approximately 30- to > 100-fold cell type specificity.  (+info)

Differential regulation of p21waf-1/cip-1 and Mdm2 by etoposide: etoposide inhibits the p53-Mdm2 autoregulatory feedback loop. (5/3981)

The Mdm2 protein is frequently overexpressed in human non-seminomatous germ cell tumours and transitional carcinoma of the bladder where it may contribute to tolerance of wtp53. Mdm2 forms an autoregulatory feedback loop with p53; the Mdm2 gene is responsive to transactivation by p53 and once synthesized the Mdm2 protein terminates the p53 response. We show here that the topoisomerase poison etoposide, like ultra violet irradiation, inhibits Mdm2 synthesis. Cytotoxic concentrations of etoposide (IC90 for > 3 h) result in inhibition of Mdm2 induction at both the RNA and protein level. Rapid apoptosis ensues. Global transcription is not inhibited: p21waf-1/cip1 and GADD45 expression increase in a dose dependent manner. Inhibition of Mdm2 synthesis depends on the continuous presence of etoposide, suggesting the DNA damage may prevent transcription. Downregulation of Mdm2 transcript occurs in cells expressing HPV16-E6 suggesting that inhibition of Mdm2 transcription is p53-independent. When cells are -treated with a pulse (1 h) of etoposide and reincubated in drug free medium, Mdm2 synthesis commences immediately after damage is repaired (3 h) and the p53 response is attenuated. Induction of apoptosis and loss of clonogenicity are 3-5-fold lower under pulse treatment conditions. This is the first observation of inhibition of Mdm2 transcription following treatment with topoisomerase (topo II) poisons, a feature that may be useful in tumour types where p53 is tolerated by overexpression of Mdm2.  (+info)

Reciprocal control of T helper cell and dendritic cell differentiation. (6/3981)

It is not known whether subsets of dendritic cells provide different cytokine microenvironments that determine the differentiation of either type-1 T helper (TH1) or TH2 cells. Human monocyte (pDC1)-derived dendritic cells (DC1) were found to induce TH1 differentiation, whereas dendritic cells (DC2) derived from CD4+CD3-CD11c- plasmacytoid cells (pDC2) induced TH2 differentiation by use of a mechanism unaffected by interleukin-4 (IL-4) or IL-12. The TH2 cytokine IL-4 enhanced DC1 maturation and killed pDC2, an effect potentiated by IL-10 but blocked by CD40 ligand and interferon-gamma. Thus, a negative feedback loop from the mature T helper cells may selectively inhibit prolonged TH1 or TH2 responses by regulating survival of the appropriate dendritic cell subset.  (+info)

Randomised controlled trial of effect of feedback on general practitioners' prescribing in Australia. (7/3981)

OBJECTIVE: To evaluate the effect on general practitioners' prescribing of feedback on their levels of prescribing. DESIGN: Randomised controlled trial. SETTING: General practice in rural Australia. PARTICIPANTS: 2440 full time recognised general practitioners practising in non-urban areas. INTERVENTION: Two sets of graphical displays (6 months apart) of their prescribing rates for 2 years, relative to those of their peers, were posted to participants. Data were provided for five main drug groups and were accompanied by educational newsletters. The control group received no information on their prescribing. MAIN OUTCOME MEASURES: Prescribing rates in the intervention and control groups for the five main drug groups, total prescribing and potential substitute prescribing and ordering before and after the interventions. RESULTS: The intervention and control groups had similar baseline characteristics (age, sex, patient mix, practices). Median prescribing rates for the two groups were almost identical before and after the interventions. Any changes in prescribing observed in the intervention group were also seen in the control group. There was no evidence that feedback reduced the variability in prescribing nor did it differentially affect the very high or very low prescribers. CONCLUSIONS: The form of feedback evaluated here-mailed, unsolicited, centralised, government sponsored, and based on aggregate data-had no impact on the prescribing levels of general practitioners.  (+info)

Inhibition of cellular growth by increased guanine nucleotide pools. Characterization of an Escherichia coli mutant with a guanosine kinase that is insensitive to feedback inhibition by GTP. (8/3981)

In Escherichia coli the enzyme guanosine kinase phosphorylates guanosine to GMP, which is further phosphorylated to GDP and GTP by other enzymes. Here I report that guanosine kinase is subject to efficient feedback inhibition by the end product of the pathway, GTP, and that this regulation is abolished by a previously described mutation, gsk-3, in the structural gene for guanosine kinase (Hove-Jensen, B., and Nygaard, P. (1989) J. Gen. Microbiol. 135, 1263-1273). Consequently, the gsk-3 mutant strain was extremely sensitive to guanosine, which caused the guanine nucleotide pools to increase dramatically, thereby initiating a cascade of metabolic changes that eventually led to growth arrest. By isolation and characterization of guanosine-resistant derivatives of the gsk-3 mutant, some of the crucial steps in this deleterious cascade of events were found to include the following: first, conversion of GMP to adenine nucleotides via GMP reductase, encoded by the guaC gene; second, inhibition of phosphoribosylpyrophosphate synthetase by an adenine nucleotide, presumably ADP, causing starvation for histidine, tryptophan, and pyrimidines, all of which require PRPP for their synthesis; third, accumulation of the regulatory nucleotide guanosine 5',3'-bispyrophosphate (ppGpp), a general transcriptional inhibitor synthesized by the relA gene product in response to amino acid starvation.  (+info)

Shimamura, T; Hashimoto, K; and Sasaki, S, Feedback suppression of the immune response in vivo. II. Involvement of prostaglandins in the generation of suppressor- -inducer b lymphocytes. (1982). Subject Strain Bibliography 1982. 2769 ...
Feedback Control Systems ( FCS ). Lecture-1 & 2 Introduction to the Subject. Dr. Imtiaz Hussain email: [email protected] URL : http://imtiazhussainkalwar.weebly.com/. Course Outline. Text Books. Modern Control Engineering, (5 th Edition) By: Katsuhiko Ogata. Slideshow 2395821 by onawa
Modelling Robust Feedback Control Mechanisms That Ensure Reliable Coordination of Histone Gene Expression with DNA Replication. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
TY - GEN. T1 - A sensory feedback system utilizing cutaneous electrical stimulation for stroke patients with sensory loss. AU - Kita, Kahori. AU - Takeda, Kotaro. AU - Osu, Rieko. AU - Sakata, Sachiko. AU - Otaka, Yohei. AU - Ushiba, Junichi. PY - 2011/11/2. Y1 - 2011/11/2. N2 - Sensory disturbance is very common following stroke and may exacerbate a patients functional impairment, even if the patient has good motor function. For instance, patients with sensory disturbances will often grip an object with excessive or underestimated pinch pressure, because they do not receive the appropriate sensory feedback and must rely only on visual feedback. In this study, we developed a sensory feedback system that used cutaneous electrical stimulation for patients with sensory loss. In the system, electrical stimulation is modulated by the strength of pinch pressure and the patients are able to identify their fingertip pinch pressure. To evaluate the efficacy of the system, a clinical case study was ...
Objectives: Long chain fatty acids (LCFAs) released from adipocytes inhibit lipolysis through an unclear mechanism. We hypothesized that the LCFA receptor, FFAR4 (GPR120), which is highly expressed in adipocytes could be involved in this feed-back regulation.. Methods and Results: LC-MS analysis of conditioned media from isoproterenol-stimulated primary cultures of murine and human adipocytes demonstrated that most of the released non-esterified free fatty acids (NEFAs) are known agonists for FFAR4. In agreement with this, conditioned medium from isoproterenol-treated adipocytes stimulated signaling strongly in FFAR4 transfected COS-7 cells as opposed to non-transfected control cells. In transfected 3T3-L1 cells, FFAR4 agonism stimulated Gi- and Go-mini G protein binding more strongly than Gq - effects which were blocked by the selective FFAR4 antagonist AH7614. In primary cultures of murine white adipocytes, the synthetic, selective FFAR4 agonist CpdA inhibited isoproterenol-induced ...
A force feedback interface including a haptic accelerator that relieves the computational burden associated with force feedback generation from a force feedback processor. The force feedback processor is preferably a device microprocessor included in the interface device and separate from a controlling host computer for determining forces to be output. The haptic accelerator quickly determines velocity and/or acceleration information describing motion of a user manipulatable object from raw position data received from sensors of the interface device and representing the position of the user object. The velocity and/or acceleration data is used by the force feedback processor in the determination of forces to be output on the user object. The haptic accelerator can in some embodiments also quickly and reliably determine condition forces which depend on the motion of the user object, thus relieving additional computation burden from the force feedback processor and permitting the force feedback processor
The module introduces the topic of feedback control systems and presents methods of modelling that lead to transient, steady state and stability performances in control systems. An emphasis is placed on links between time responses and complex frequency domains. Principal topics are feedback systems, Bode, Nyquist and root-locus analysis, stability conditions and compensation design. The overall aim is to understand and be able to apply basic techniques for the analysis and design of feedback control systems.. ...
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In the physiology of the kidney, tubuloglomerular feedback (TGF) is a feedback system inside the kidneys. Within each nephron, information from the renal tubules (a downstream area of the tubular fluid) is signaled to the glomerulus (an upstream area). Tubuloglomerular feedback is one of several mechanisms the kidney uses to regulate glomerular filtration rate (GFR). It involves the concept of purinergic signaling, in which an increased distal tubular sodium chloride concentration causes a basolateral release of adenosine from the macula densa cells. This initiates a cascade of events that ultimately brings GFR to an appropriate level. The kidney maintains the electrolyte concentrations, osmolality, and acid-base balance of blood plasma within the narrow limits that are compatible with effective cellular function; and the kidney participates in blood pressure regulation and in the maintenance of steady whole-organism water volume Fluid flow through the nephron must be kept within a narrow range ...
A control system is a system, which provides the desired response by controlling the output. … Traffic lights control system is an example of control system. Here, a sequence of input signal is applied to this control system and the output is one of the three lights that will be on for some duration of time. ...
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Information retrieval is, in general, an iterative search process, in which the user often has several interactions with a retrieval system for an information need. The retrieval system can actively probe a user with questions to clarify the information need instead of just passively responding to user queries. A basic question is thus how a retrieval system should propose questions to the user so that it can obtain maximum benefits from the feedback on these questions. In this paper, we study how a retrieval system can perform active feedback, i.e., how to choose documents for relevance feedback so that the system can learn most from the feedback information. We present a general framework for such an active feedback problem, and derive several practical algorithms as special cases. Empirical evaluation of these algorithms shows that the performance of traditional relevance feedback (presenting the top K documents) is
Hey Jennie. I see your point of view and understand why it can be confusing. The reason wound healing is considered a positive feedback mechanism is because the output enhances the original stimulus. If a cut occurs, the body sends platelets and cells to the site. The platelets and cells fight invading pathogens and produce a clot. When the clot forms and the wound heals, the inflammation response and output end. Negative feedback changes a variable back to its original value and is constantly adjusting within the body. If your temperature is to high, a negative feedback loop works to lower it. If your temperature is low, it will bring it back up. Its a balancing act. Positive feedback only occurs in certain situations and has an ending, it does not constantly adjust. If you get a cut, a positive feedback loop works to heal it, then it stops. If you go into labor, the loop continues until you deliver, then its over and you go back to your original state. Think if you werent pregnant but felt ...
Hey Jennie. I see your point of view and understand why it can be confusing. The reason wound healing is considered a positive feedback mechanism is because the output enhances the original stimulus. If a cut occurs, the body sends platelets and cells to the site. The platelets and cells fight invading pathogens and produce a clot. When the clot forms and the wound heals, the inflammation response and output end. Negative feedback changes a variable back to its original value and is constantly adjusting within the body. If your temperature is to high, a negative feedback loop works to lower it. If your temperature is low, it will bring it back up. Its a balancing act. Positive feedback only occurs in certain situations and has an ending, it does not constantly adjust. If you get a cut, a positive feedback loop works to heal it, then it stops. If you go into labor, the loop continues until you deliver, then its over and you go back to your original state. Think if you werent pregnant but felt ...
As a process, apoptosis integrates a multitude of pro- and anti-cell death signals to a single decision for life or death. This type of all-or-none response to quantitative inputs is common in biological phenomena such as cell proliferation and differentiation and is often associated with a network topology containing positive feedback loops (28). While the ability of caspases to self-cleave provides one level of such feedback activity (17), we find that this feedback extends to cross activation between both the extrinsic and intrinsic pathways, with specific activation of either extrinsic or intrinsic apoptosis leading to near simultaneous activation of both caspase-8 and -9 in all apoptotic cells tested in this experiment. This supports a model wherein, although initiation of caspases is segregated by distinct pathways, an apoptotic signal, once having reached a threshold level, leads to a simultaneous activation across both arms of the apoptotic network. Several signaling mechanisms ...
Combined T(3)/T(4) therapy--In thyroidectomized patients, the L-T(4)-only replacement doses needed to normalize plasma T(3) or average tissue T(3) were 145 microg L-T(4)/day or 165 microg L-T(4)/day, respectively. The combined T(4) + T(3) dosing needed to normalize both plasma and tissue T(3) levels was 105 microg L-T(4) + 9 microg T(3) per day. For all three regimens, simulated mean steady-state plasma thyroid-stimulating hormone (TSH), T(3), and T(4) was within normal ranges (TSH: 0.5-5 mU/L; T(4): 5-12 microg/dL; T(3): 0.8-1.9 ng/mL). Parenteral T(4) administration--800 microg weekly or 400 microg twice weekly normalized average tissue T(3) levels both for subcutaneous (SC) and intramuscular (IM) routes of administration. TSH, T(3), and T(4) levels were maintained within normal ranges for all four of these dosing schemes (1x vs. 2x weekly, SC vs. IM). Central hypothyroidism--We simulated steady-state plasma T(3), T(4), and TSH concentrations in response to varying degrees of central ...
Tailored feedback was rated as more relevant, and was more likely to be shown to the GP than the generic feedback. Given that the tailored feedback included personalised risk factor information, it is not surprising that it was rated as more relevant. Almost two-thirds of participants given the tailored feedback indicated that they either showed the feedback to their GP or it gave them some ideas about what to ask the doctor, compared to less than half of those who received generic feedback. Anecdotally, the tailored feedback prompted a greater response from participants than the generic feedback, including several who were surprised by their recommended healthy weight, and one participant who commented that seeing her depression score prompted her to bring this up with her GP. However, participants did not rate the tailored feedback as any more likely to help them improve their health, or any easier to understand, than the generic feedback.. The type of feedback did not appear to influence ...
use CGI::Application::Plugin::Feedback :all; sub rm_one { my $self = shift; my $nextmode = (int rand 2) ? two : three; $self-,feedback(Hi there, as you call the feedback method with an string argument, ); $self-,feedback(it gets appended, stored in the session object.); $self-,feedback(When you ask feedback to be injected into a HTML Template, ); $self-,feedback( the feedback is shown and emptied from the session.); $self-,header_type(redirect); $self-,header_props(-url=,?rm=$nextmode); return Redirecting..; } sub rm_two { my $self = shift; my $tmpl = $self-,load_tmpl(undef, die_on_bad_params =, 0 ); $tmpl-,param( FEEDBACK =, $self-,get_feedback_prepped ); return $tmpl-,output; } # or how i like to code my runmodes... sub rm_three { my $self = shift; $self-,feedback(This is runmode three, hello there. ); return $self-,tmpl-,output; } sub tmpl { my $self = shift; unless ( defined $self-,{tmpl}){ $self-,{tmpl} = $self-,load_tmpl(undef, die_on_bad_params =, 0 ); ...
Feedback loops, both positive and negative are embedded in the Mitogen Activated Protein Kinase (MAPK) cascade. In the three layer MAPK cascade, both feedback loops originate from the terminal layer and their sites of action are either of the two upstream layers. Recent studies have shown that the cascade uses coupled positive and negative feedback loops in generating oscillations. Two plausible designs of coupled positive and negative feedback loops can be elucidated from the literature; in one design the positive feedback precedes the negative feedback in the direction of signal flow and vice-versa in another. But it remains unexplored how the two designs contribute towards triggering oscillations in MAPK cascade. Thus it is also not known how amplitude, frequency, robustness or nature (analogous/digital) of the oscillations would be shaped by these two designs. We built two models of MAPK cascade that exhibited oscillations as function of two underlying designs of coupled positive and negative
Taking a playcentric approach in a game-designing classroom might mean, as a student game designer, asking your classmates to play your game and give you feedback in a structured way. To get constructive feedback, you might ask your classmates to use sentence starters such as I like and I wonder and what if?. It also means learning how to listen and take on board their feedback or suggestions. These are examples of practices we saw in some of the primary and intermediate Games for Learning classrooms. By practising this process regularly, students got better at both giving and receiving thoughtful, constructive feedback. In one Year 7-8 classroom, students were facilitating the whole feedback process themselves, no longer needing the teacher to run it.. In a Year 6 classroom, in a different school, each student brainstormed as many ideas as they could for a game they would like to design. Then they took their ideas around the classroom on a speed date to get rapid feedback from peers. ...
Definition of feedback regulation in the Financial Dictionary - by Free online English dictionary and encyclopedia. What is feedback regulation? Meaning of feedback regulation as a finance term. What does feedback regulation mean in finance?
This paper discusses the development of computer-based business simulations designed to prepare high school students for entry-level jobs in business, and explores the implementation of feedback mechanisms in simulations. Reasons why simulations are an appropriate type of media for this application, the nature of feedback, and research on feedback are considered. An overview of the Classroom, Inc. Project is then presented, including descriptions of the computer-based simulations and activities augmenting the simulation. The following instructional goals and ways that the goals are addressed by the simulations are examined: (1) give students experience with the language of the corporate world; (2) give students a feel for the major structural features of a business entity; (3) introduce students to contingencies in the business environment; and (4) show students how these contingencies are related to each other and to the goals of the business entity. The benefits of using fiction
In a mobile communication system, receivers measure channel characteristics using a received reference channel signal. The receivers determine a weight which has orthogonality with respect to each of a preset number of weight vectors in the mobile communication system and has the highest signal-to-interference-and-noise ratio, and feedback the weight and the corresponding signal-to-interference-and-noise ratio to the transmitter. The transmitter interprets the feedback information output from the receivers and determines receivers having feedback information which are orthogonal to each other and have the maximum throughput as an addition capacity when transmitted simultaneously, and determines weights based on the feedback information of the receivers having the maximum throughput. By applying the determined weights to the antennas using a well-known beam forming scheme, data can be transmitted to each of the determined receivers. Therefore, the
The distribution of motivations will be used (alongside other research, data, and feedback) to determine how to present and prioritize existing or non-existent features in this feedback system - including but not limited to: feedback input (here, star ratings on 4 metrics); feedback summary (here, bar graph for each metric); feedback output (potentially reviews, comments, messages to editors, lists, updates to profile pages, and on). Responses to this answer will also highlight areas where further research and design thinking needs to take place (for example, if we see a significant bias in motivations to opinion sharing we will further explore iterations on the interface or new interface elements that lead to a richer opinion sharing experience ...
318027337 - EP 2153025 A2 2010-02-17 - REAL TIME CLOSED LOOP INTERPRETATION OF TUBING TREATMENT SYSTEMS AND METHODS - [origin: WO2008152599A2] A technique facilitates the treatment of a subterranean formation. The technique involves the use of a fluid delivery system that comprises a continuous feedback system. The continuous feedback system utilizes a real time closed loop interpretation technique to instantaneously synchronize and adjust actions at a well site surface relative to measured downhole events. Sensors are used to monitor at least one downhole property in real time. Based on the real time data, the continuous feedback system enables adjustments to be made with respect to the at least one property in a manner designed to influence a downhole event.[origin: WO2008152599A2] A technique facilitates the treatment of a subterranean formation. The technique involves the use of a fluid delivery system that comprises a continuous feedback system. The continuous feedback system utilizes a real time
Despite this, it includes a pdf feedback with a different alignment. same Problem SolversMartin H. SchultzElliptic Problem Solvers enables pdf feedback same to some mistakes of the acid zero-offset of big auxiliary face deliveryArrives. abbreviated into 40 Methods, this pdf feedback systems inputoutput is with an type of the double access of Settling a general Galerkin example encoding functional easy essential reproductive women.
TY - JOUR. T1 - Feedback Redefined. T2 - Principles and Practice. AU - Ramani, Subha. AU - Könings, Karen D.. AU - Ginsburg, Shiphra. AU - van der Vleuten, Cees P. M.. PY - 2019/5/15. Y1 - 2019/5/15. N2 - Feedback is defined as a regulatory mechanism where the effect of an action is fed back to modify and improve future action. In medical education, newer conceptualizations of feedback place the learner at the center of the feedback loop and emphasize learner engagement in the entire process. But, learners reject feedback if they doubt its credibility or it conflicts with their self-assessment. Therefore, attention has turned to sociocultural factors that influence feedback-seeking, acceptance, and incorporation into performance. Understanding and application of specific aspects of psychosocial theories could help in designing initiatives that enhance the effect of feedback on learning and growth. In the end, the quality and impact of feedback should be measured by its influence on recipient ...
Julian Reschke, Mon, 28 Mar 2011 15:55:25 +0200: , On 28.03.2011 15:49, Sam Ruby wrote: ,, On 03/28/2011 09:18 AM, Julian Reschke wrote: ,,, On 28.03.2011 14:56, Sam Ruby wrote: ,,,, On 03/28/2011 08:44 AM, Julian Reschke wrote: ,,,,, ,,,,, PS: chairs, please consider this feedback when deciding on ISSUE-27. ,,,, ,,,, The poll is still open. Please take this opportunity to update your ,,,, responses as you see fit. Feel free to include a link to your email in ,,,, your response. ,,, ,,, This works for survey feedback on Change Proposals, but not for feedback ,,, on other peoples feedback. ,, ,, Why not? Others have done such in the past. When they have done so, ,, their feedback has been taken into consideration. ,, ... , , Im not sure how to do that. , , If I want to comment on a somebody else feedback on my own change , proposal, where do I put that? , , I note this WG has an issue tracker that tracks mailing list , discussions when labeled properly. We should take advantage of that. You ...
In rainbow trout, bilateral castration at any stage of the testicular cycle, including the, period when the testes are inactive, increases plasma GtH levels (Billard, Richard and Breton, 1.976, 1977; Billard, 1978a). These results indicate that the negative feedback action of testicular steroids on GtH secretion occurs at all stages in the breeding cycle. Sex steroids are taken up and sequestered in the pituitary, the NPO, the nucleus lateralis tuberis (NLT), the nucleus recessus lateralis and other locations in the brain in many species of fishes, suggesting that a number of sites in the brain can serve as loci for feedback action of sex steroids (Kim. et al., 1978; Peter and Crim, 1979). In the sexually mature female goldfish, serum GtH levels increase markedly following implantation of antiestrogens in the pituitary, whereas similar implants in the NLT area result only in a modest GtH increase and have no effect when implanted elsewhere (Billard and Peter, 1977). Thus the NLT and pituitary ...
The invention relates to a device for the representation and determination of the rigidity of materials, by means of which measured physical values can be represented at a vicinity distant from the place of measurement and above all by means of a tactile representation, in other words, using the sense of touch. According to the invention, a force feedback system has been developed which permits the user or operator to gain a feeling for the mechanical rigidity value. The value for rigidity, measured for example for medical purposes by endoscope or arthroscope, controls the pressure found in an external touch cushion (2), by means of one of the voltages (U), given by an analytical device recording the appropriate test region. The rigidity of the cushion (2) thus gives an equivalent feel to the measured rigidity of the material under evaluation, or the biological probe. In the above rigidity transmitter (1) a pressure (P) is generated in a closed pressure system by means of an input converter (3) and
Support Feedback = = Introduction = From time to time, issues or conflicts arise in support channels. We should have a documented process for listening to feedback and acting on it where possible. This document is oriented to irc support (specifically the #fedora support channel), but could be expanded to cover other support areas (mailing lists / forums). = Current #fedora feedback = The current method of feedback is via irc, in the #fedora-ops channel, and after that in email to the irc-support-operators group in fas. The current setup for feedback of support in #fedora has a number of problems: * Its not really documented at all. * Feedback is done right after events that raised the issue, so everyone is emotional and hot about it. * Both the person wanting to provide the feedback and possibly people they wish to provide feedback about are in all these avenues, possibly leading to back and forth and heated exchanges between them. * Since feedback is done directly, there is no way to just ...
In general, the prediction process is one of identifying the current state of the system, and making a prediction for some as yet uncomputed value based on that state. Prediction accuracy is improved by learning what is a good prediction for that state using a feedback process at the time the predicted value is actually computed. While there have been a number of efforts to formally characterize this process, we have taken the approach of providing a simple algebraic-style notation that allows one to express this state identification and feedback process. This notation allows one to describe a wide variety of predictors in a uniform way. It also facilitates the use of an efficient search technique called genetic programming, which is loosely modeled on the natural evolutionary process, to explore the design space. In this paper we describe our notation and the results of the application of genetic programming to the design of branch and indirect jump predictors. ...
Ready to ship: Within cells displaying features of Alzheimers, the researchers found high concentrations of WAVE1 and the amyloid-β precursor protein within the Golgi, an organelle in which proteins are packaged for shipping. These appear in the cell above as bright, yellow clusters.. Our discovery centers on a protein called WAVE1, which we found to be important in the production of amyloid-β. The reduction of WAVE1 appears to have a protective effect against the disease, says study author Paul Greengard, Vincent Astor Professor and head of the Laboratory of Molecular and Cellular Neuroscience. When levels of amyloid-β rise, there is an accompanying increase in another molecule, AICD, which reduces the expression of WAVE1. This has the effect of reducing the production of amyloid-β.. By targeting steps within this newly discovered pathway, he adds, it may be possible to develop drugs to reduce amyloid-β that potentially could be used to either treat or prevent Alzheimers ...
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We introduce here a simple finite-dimensional feedback control scheme for stabilizing solutions of infinite-dimensional dissipative evolution equations, such as reaction-diffusion systems, the Navier-Stokes equations and the Kuramoto-Sivashinsky equation. The designed feedback control scheme takes advantage of the fact that such systems possess finite number of determining parameters (degrees of freedom), namely, finite number of determining Fourier modes, determining nodes, and determining interpolants and projections. In particular, the feedback control scheme uses finitely many of such observables and controllers. This observation is of a particular interest since it implies that our approach has far more reaching applications, in particular, in data assimilation. Moreover, we emphasize that our scheme treats all kinds of the determining projections, as well as, the various dissipative equations with one unified approach. However, for the sake of simplicity we demonstrate our approach in this
Phosphorylation of NEUROG3 Links Endocrine Differentiation to the Cell Cycle in Pancreatic Progenitors Scientists demonstrated that neurogenin 3 (NEUROG3) is phosphorylated within the nucleus on serine 183, which catalyzes its hyperphosphorylation and proteosomal degradation. During progression through the progenitor cell cycle, NEUROG3 phosphorylation is driven by the actions of cyclin-dependent kinases 2 and 4/6 at G1/S cell-cycle checkpoint. [Dev Cell] Abstract , Graphical Abstract Prolonged Elimination of Negative Feedback Control Mechanisms along the Insulin Signaling Pathway Impairs β Cell Function In Vivo Investigators examined the effects of mutation of five inhibitory Ser phosphorylation sites on insulin receptor substrate 2 (IRS2) function in transgenic mice that overexpress, selectively in pancreatic β cells, either wild-type (WT) or a mutated IRS2 protein (IRS25A). Islets size, number, and mRNA levels of catalase and superoxide dismutase, were increased, while those of nitric ...
Background: Murine double minutes-2 (MDM2) protein plays a key role in physiological processes like growth arrest, senescence and apoptosis. MDM2 negatively regulates key proteins like p53 by inhibiting its transcriptional activity and promoting its proteosomal degradation through ubiquitinylation. In turn, the MDM2 expression is regulated in part by a p53-responsive promotor. This negative feedback control mechanism assures that both p53 and MDM2 are kept at very low levels in proliferating cells. However, in about half of all human tumors, the normal regulation of p53 might be disrupted through direct overexpression of MDM2 caused by e.g. MDM2 gene amplification or a T to G substitution (SNP309) in the promotor region of MDM2. High resolution melting analysis (HRMA) provides a valid approach to efficiently detect DNA mutations. The current study aimed at validating and implementing HRMA for screening of colorectal cancer patients (CRC) to detect MDM2 promotor SNP309. Pyrosequencing was used to ...
A process, apparatus, and method for online control and database collection and management of a computerized detection, tracking, and feedback control system. The system tests for nutrients by Raman scattering effects on skin or other tissues to determine the content of carotenoids or other nutrients as evidenced in that skin. Serum levels of nutrients may vary dramatically with time, but skin tissues may average such nutrition over time. Skin and other tissues may be scanned with light to produce accurate measurements of carotenoids or other nutrients accumulated in the skin based on the Raman scattering affect of those nutrients in the skin. A score can be derived from a properly calibrated bio-photonic scanner to reflect an averaged effective uptake of the detected nutrient (e.g. such as the carotenoid example).
Basically what im asking is that does it involve the hypothalamus or pituitary gland etc. as the control centre? (If it involves one). Is the message gone to there (CNS) where it comes back to say, the liver or pancreas to issue a response ...
The guidelines and suggestions from these resources are summarized in the following list of effective evaluation practices:. 1. Clearly communicate evaluation criteria to supervisees and develop a mutually agreed upon written contract reflecting these criteria.. 2. Identify and communicate supervisee strengths and weaknesses. The Ethical Guidelines for Counsellor Supervisors (ACES, 1993) recommend that supervisors provide supervisees with ongoing feedback on their performance. This performance feedback establishes for supervisees a clear sense of what they do well and which skills need to be developed. Supervisee strengths and weaknesses can be evaluated in terms of process, conceptual, personal, and professional skills (Bernard R Goodyear, 1992, p. 42).. 3. Use constructive feedback techniques during evaluations. Supervisees are more likely to hear corrective feedback messages when these are preceded by positive feedback, focussed on observable behaviours, and are delayed until a positive ...
The long-held concept of a proportional negative feedback control between the thyroid and pituitary gland requires reconsideration in the light of more recent studies. Homeostatic equilibria depend on dynamic interrelationships between thyroid hormones and pituitary thyrotropin (TSH). They display a high degree of individuality, thyroid-state-related hierarchy and adaptive conditionality. Molecular mechanisms involve multiple feedback loops on several levels of organization, different time scales and varying conditions of their optimum operation, including a proposed feedforward motif. This supports the concept of a dampened response and multistep regulation, making the interactions between TSH, FT4 and FT3 situational and mathematically more complex. As a homeostatically integrated parameter, TSH becomes neither normatively fixed nor a precise marker of euthyroidism. This is exemplified by the therapeutic situation with L-thyroxine (L-T4) where TSH levels defined for optimum health may not apply
Here at Meneage Dental, were lucky enough to receive some great feedback from patients following their treatments from our dentists, nurses and hygienists.. Sometimes we get letters of thanks and sometimes its just a brief comment on a feedback form as they leave - heres just a few of the latter - received over the last 30 days or so:. ...
A level biology students need to be able to explain the principles of homeostasis through detailed understanding of feedback systems. Students need to understand the importance of maintaining the internal environment within restricted limits and the implications of these conditions not being met.. They need to be able to explain what is meant by both negative and positive feedback, be able to explain the general stages in negative feedback and clearly articulate the differences between positive and negative feedback systems.. Regulation of temperature, pH and blood sugar levels are particular examples that students will be expected to describe and explain in detail.. Kidney function is often included within this topic area, with students required to know about the processes of ultrafiltration and reabsorption and to be able to explain the role of the loop of Henle and the counter current multiplier mechanism. This is often a difficult concept for students and does rely on a prior understanding ...
As university lecturers, we often struggle to provide our students with good quality feedback in a consistent manner. This is usually caused by the increasing imbalance in teacher-student ratios (Hounsell et al., 2008), as well as the pressure of academic life and the lack of time (Sadler, 2010). In addition, assessment practices should be transparent enough to ensure all students are evaluated in a similar way (ODonovan et al., 2004), especially when different instructors teach different groups of students taking the same course. This paper, which focuses on designing a feedback scheme that helps instructors to provide good quality feedback in a consistent manner, begins with a needs analysis based on the authors experience as an instructor of academic writing in English. A literature review follows, focusing on: (a) the scholarship on feedback in higher education; and (b) the research on the use of technology for the provision of feedback. Finally, a feedback scheme is presented, and some ...
In biological systems such as organisms, ecosystems, or the biosphere, most parameters must stay under control within a narrow range around a certain optimal level under certain environmental conditions. The deviation of the optimal value of the controlled parameter can result from the changes in internal and external environments. A change of some of the environmental conditions may also require change of that range to change for the system to function. The value of the parameter to maintain is recorded by a reception system and conveyed to a regulation module via an information channel. Biological systems contain many types of regulatory circuits, among which positive and negative feedbacks. Positive and negative dont imply consequences of the feedback have positive or negative final effect. The negative feedback loop tends to slow down a process, while the positive feedback loop tends to accelerate it. Feedback and regulation are self related. The negative feedback helps to maintain ...
As a reminder, the PQRS Feedback Reports reflect the existing PQRS requirements under current law except for the adjustment summary section. The adjustment summary section has been revised to reflect the CY 2018 MPFS proposed rule, which proposes to reduce the required number of reporting measures submitted for 2016 PQRS from nine to six.. The QRURs are based on the proposals in the 2018 MPFS proposed rule. CMS proposes to hold physicians harmless from downward payment adjustments from 2016 VBPM quality tiering if they satisfy the requirements for PQRS. If the policies are not finalized as proposed, CMS will provide updated reports to recipients. The final rule is expected to be released in early November.. To access your reports:. ...
Définitions de Positive feedback, synonymes, antonymes, dérivés de Positive feedback, dictionnaire analogique de Positive feedback (anglais)
A few things occur to me.. 1) I like the OP Davids idea and agree it would be a good to include some delay into the Feedback process when buyers are making a knee-jerk reaction and leaving neutral or negative. Clearly a seller should be informed of an issue and be given the right and time to make good. I have noticed that whilst rare, when I do get a poor comment or rating it is usually timed at about when the buyer has returned home from work (bad day in the office!) or around midnight (after the pub!). Upon receiving these I always contact the buyer (never immediately, let them calm down first!) and on most occasions the issue is quickly resolved to their complete satisfaction. So, what then to do about the Feedback rating or snotty comment…... 2) Well, having resolved the issue and pleased the buyer, one problem with the current system is a seller can not submit a Feedback Revision Request for a neutral rating or positive rating with a snotty comment (aka false positive). Well, depending ...
TY - JOUR. T1 - Feedback Control of an Achiral Robotic Microswimmer. AU - Kei Cheang, U.. AU - Kim, Hoyeon. AU - Milutinović, Dejan. AU - Choi, Jongeun. AU - Kim, Min Jun. PY - 2017/4/1. Y1 - 2017/4/1. N2 - Magnetic microswimmers are useful for navigating and performing tasks at small scales. To demonstrate effective control over such microswimmers, we implemented feedback control of the three-bead achiral microswimmers in both simulation and experiment. The achiral microswimmers with the ability to swim in bulk fluid are controlled wirelessly using magnetic fields generated from electromagnetic coils. The achirality of the microswimmers introduces unknown handedness resulting in uncertainty in swimming direction. We use a combination of rotating and static magnetic fields generated from an approximate Helmholtz coil system to overcome such uncertainty. There are also movement uncertainties due to environmental factors such as unsteady flow conditions. A kinematic model based feedback ...
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Prior research on performance feedback has focused on the direct impact of performance feedback on risk taking (Lim & McCann, 2013) and paid little attention to the role of contextual factors. In particular, there are few empirical studies that examine how performance feedback and institutions interplay in risk taking of organizations. This study aims to fill this gap by investigating the role of organization-level institutional logics and state-level institutions in a microfinance industry. Institutions arise as a result of human beings continuous efforts to deal with uncertain environments (North, 1990; Scott, 1995). Thus, individual and organizational actors are affected by institutions, and different institutions can be a source of heterogeneity of organizational behavior (Peng, 2003). This suggests that the impact of performance feedback on risk taking can be affected by institutional factors. And, microfinance industry provides a good setting to investigate this issue.
TY - JOUR. T1 - IGF feedback effects on growth hormone secretion in ewes. T2 - Evidence for action at the pituitary but not the hypothalamic level. AU - Fletcher, T. P.. AU - Thomas, G. B.. AU - Dunshea, F. R.. AU - Moore, L. G.. AU - Clarke, I. J.. PY - 1995/1/1. Y1 - 1995/1/1. N2 - The putative negative feedback effects of IGF-I and IGF-II on GH secretion were tested by intracerebroventricular (icv) and intrapituitary administration to sheep. Over two consecutive days, serial jugular blood samples were taken at 10 min intervals for 6 h from ewes n = 3/group) fitted with indwelling stainless steel cannulae into the lateral or third cerebral ventricles. The sheep were injected (icv) with either vehicle or purified ovine IGF-I (2, 4 or 8 μg). IGF-I injection had no effect on plasma GH secretion. Serial blood samples were taken from a second group of nine ewes in which ovine or recombinant human (rh) IGF-I was infused (2.5 μg/h for 2 h) into the third ventricle; once again, IGF-I failed to ...
A feedback control system is disclosed for use in processing signals employed in pulse transmittance oximetry. The signals are produced in response to light transmitted through, for example, a finger at two different wavelengths. Each signal includes a slowly varying baseline component representing the relatively fixed attenuation of light produced by bone, tissue, skin, and hair. The signals also include pulsatile components representing the attenuation produced by the changing blood volume and oxygen saturation within the finger. The signals are processed by the feedback control system before being converted by an analog-to-digital (A/D) converter (72) for subsequent analysis by a microcomputer (16). The feedback control system includes a controllable offset subtractor (66), a programmable gain amplifier (68), controllable drivers (44) for the light sources (40, 42), and the microcomputer (16). The microcomputer (16) receives signals from the offset
Curry also introduces a potential paradox in her report when she emphasises natural variations. The magnitude of natural temperature variation are regulated by feedback processes and have physical causes. The climate sensitivity also involve such feedback processes. Any feedback process based on temperature will act on both natural and forced changes in the temperature. If such feedbacks result in pronounced natural temperature variations, they also imply that the climate sensitivity is high. Examples of such feedbacks include increased atmospheric humidity and reduced snow/ice cover. Processes involving clouds are more uncertain, but they too are likely to be affected by temperature (convection) and act to modify the climatic response.. Natural variations may arise from both variations in the climatic state (eg ENSO, NAO, and PDO) or from external causes, such as changes in the sun and volcanic eruptions. There are also feedbacks relevant to forced variation as well as internal variability ...
A dual feedback control system for a Class-D power circuit maximizes efficiency by controlling the magnitude and phase angle of the resonant load circuit using two separate feedback loops. The first feedback loop changes the value of a first variable capacitor in response to difference in magnitude between the actual load impedance and the desired load impedance. The second feedback loop changes the value of a second variable capacitor in response to the phase difference between the actual phase angle and the desired phase angle. In this way, the real and imaginary components of the load impedance are controlled so that the Class-D circuit is in tune, and hence efficiency is maximized, over a wide range of load impedances. The dual feedback control of the present invention may be advantageously employed in the ballast of an electrodeless HID lamp system.
By Sontag, Eduardo Veliz-Cuba, Alan; Laubenbacher, Reinhard; Jarrah, Abdul Salam ABSTRACT Feedback loops play an important role in determining the dynamics of biological networks. To study the role of negative feedback loops, this article introduces the notion of distance-to- positive-feedback which, in essence, captures the number of independent negative feedback loops in the network, a property inherent in the network topology. Through a computational study using Boolean networks, it is shown that distance-to-positive- feedback has a strong influence on network dynamics and correlates very well with the number and length of limit cycles in the phase space of the network. To be precise, it is shown that, as the number of independent negative feedback loops increases, the number (length) of limit cycles tends to decrease (increase). These conclusions are consistent with the fact that certain natural biological networks exhibit generally regular behavior and have fewer negative feedback loops ...
0038] Referring to, for example, FIG. 3C, in the exemplary embodiment, the motors 40, 42 may have suitable position feedback systems 50, 52. The position feedback systems 50, 52 may be non-invasive with respect to the isolated atmosphere in the transport chamber, as will be described below. The feedback system 50, 52 for motors 40, 42 may be generally similar to the feedback system 150, 152 shown in FIG. 6. The feedback systems 150, 152 for each rotor may be similar to each other and may generally incorporate sensors 150A, 150G, 1501 and target indexing to establish absolute and incremental rotational position, as well as radial or centered position of the rotor 140R, 142R. In alternate embodiments, the sensors 150A, 150G, 1051 may provide feedback information for any one or more of the absolute and incremental rotational position and the radial position. For example, the sensors 150A, 150G, 1501 may be electromagnetic sensors such as Hall effect sensor, or may be optical or other beam sensors. ...
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Looking for online definition of feedback inhibition in the Medical Dictionary? feedback inhibition explanation free. What is feedback inhibition? Meaning of feedback inhibition medical term. What does feedback inhibition mean?
In this study, we demonstrated that there is a positive feedback regulation between gankyrin and Nrf2, which amplifies the antioxidant capability of HCC cells. Under oxidative stress, increased Nrf2 activity promotes the transcription of gankyrin and up-regulates gankyrin expression. Excess gankyrin competitively interrupted the association between Nrf2 and Keap1 and subsequently stabilized Nrf2 protein. This positive feedback regulation helps combat excessive intracellular ROS, which reduces oxidative stress-induced cell death, maintains mitochondrial stability, and further contributes to the tumorigenesis of HCC. This feedback regulation is similar to the correlation between p62/SQSTM1 and Nrf2, as Nrf2 regulates the expression of p62/SQSTM1 through ARE, and in turn p62/SQSTM1 binds to Keap1 and prevents Nrf2 degradation (Jain et al., 2010). Similar to the p62/SQSTM1 protein, the human gankyrin protein contains an ELKE motif between aa 21-24 and an ENKE motif between aa 201-204, which serves ...
Microglia, the brains resident macrophages, help to regulate brain function by removing dying neurons, pruning non-functional synapses, and producing ligands that support neuronal survival1. Here we show that microglia are also critical modulators of neuronal activity and associated behavioural responses in mice. Microglia respond to neuronal activation by suppressing neuronal activity, and ablation of microglia amplifies and synchronizes the activity of neurons, leading to seizures. Suppression of neuronal activation by microglia occurs in a highly region-specific fashion and depends on the ability of microglia to sense and catabolize extracellular ATP, which is released upon neuronal activation by neurons and astrocytes. ATP triggers the recruitment of microglial protrusions and is converted by the microglial ATP/ADP hydrolysing ectoenzyme CD39 into AMP; AMP is then converted into adenosine by CD73, which is expressed on microglia as well as other brain cells. Microglial sensing of ATP, the ensuing
The other challenge experience in McDonalds Cooperation is on the rivalry among some employees especially the servers and the Chief-chefs In line with add, the 360-degree feedback can allow the management to assess the performance of the workers and provide performance bonus to the best performers and training to those who need to improve their skills. This is perfectly in line with Carter et al., (2005) who strongly believe that the 360-degree feedback process allows implementing strategic development decision and remuneration process. The McDonalds Cooperation can also choose the 360-degree feedback process as it is a multi-rater and anonymous system and this will avoid conflicts among its staffs (Fleenor et al. 2020). One great concern regarding the system is that the management had to communicate it to all the related stakeholders. The design can also be made to facilitate the quality of its meals offered to customers.. 2.15 Decide on the areas of work and behaviour on which feedback will ...
The data described above demonstrate a local PDE feedback regulation in cardiac myocytes whereby β1AR signals activate PDE4B3 via PKA-mediated phosphorylation. PKA-activated PDE4B, in turn, reduces the local steady-state cAMP concentration in a confined subsarcolemmal domain. The functional consequences of interrupting this feedback include increased PKA-mediated phosphorylation of Cav1.2 and RyR2, which is necessary for fine-tuning of ECC, a finding consistent with the cardiac phenotype of PDE4BKO mice (Leroy et al., 2011). Functional data on intracellular Ca2+ levels and contraction rate confirm the altered cAMP/PKA signaling in PDE4BKO myocytes. These conclusions are based on measurements of βAR-induced cAMP accumulation at the plasma membrane of PDE4BKO myocytes, the effects of acute PDE4B-selective inhibition in wild-type myocytes, the β1AR-dependent activation of PDE4B and the altered PKA-mediated phosphorylation of some, but not all substrates involved in Ca2+ homeostasis and ...
An aircraft user interface haptic feedback system includes a user interface, a position sensor, a cogless motor, and a control circuit. The user interface is movable to a position. The position sensor senses the position of the user interface and supplies a user interface position signal. The cogless motor is coupled to the user interface, and receives motor drive signals. The cogless motor, in response to the motor drive signals, supplies feedback force to the user interface. The control circuit receives at least the user interface position signal and a signal representative of the motor current and is operable, in response to at least these signals, to control the motor current supplied to the cogless motor using a non-trapezoidal motor commutation scheme.
0006] In the related art, the request from the mobile terminal is limited to requesting uplink bandwidth. Also, allocation of a Fast-feedback channel (e.g., CQICH) that allows quick transferring of various feedback values was received only based according to an allocation from the base station. When the base station requests feedback values upon allocation of a CQICH region to the mobile terminal, a CQICH_Enhanced_allocation Information Element (IE), a CQICH-allocation IE or if data exists, a Fast-feedback allocation sub-header is used for informing. Only the mobile terminal that received a request through such IE or sub-header then calculates the requested feedback value and reports such thereof. Accordingly, reporting a most recent downlink channel state (condition) value of the mobile terminal with a request from the base station, changing into MIMO mode for channel improvement (enhancement) in a multiple antenna system, and other such procedures cannot be requested from the mobile terminal ...
This study evaluates the addition of a quality improvement toolbox to an online audit and feedback intervention in Dutch intensive care units. The toolbox comprises for each quality indicator (e.g., percentage of patients per shift whose pain is measured) a list of potential bottlenecks in the care process (e.g., staff is unaware of the prevailing guidelines for measuring pain every shift), associated recommendations for actions to solve mentioned bottlenecks (e.g., organize an educational training session), and supporting materials to facilitate implementation of the actions (e.g., a slide show presentation discussing the importance and relevance of measuring pain every shift). Half of the participating intensive care units will only receive online feedback, while the other half will additionally gain access to the integrated toolbox to facilitate planning and executing actions ...
How children learn from positive and negative performance feedback lies at the foundation of successful learning and is therefore of great importance for educational practice. In this study, we used functional magnetic resonance imaging (fMRI) to examine the neural developmental changes related to feedback-based learning when performing a rule search and application task. Behavioral results from three age groups (8-9, 11-13, and 18-25 years of age) demonstrated that, compared with adults, 8- to 9-year-old children performed disproportionally more inaccurately after receiving negative feedback relative to positive feedback. Additionally, imaging data pointed toward a qualitative difference in how children and adults use performance feedback. That is, dorsolateral prefrontal cortex and superior parietal cortex were more active after negative feedback for adults, but after positive feedback for children (8-9 years of age). For 11- to 13-year-olds, these regions did not show differential feedback ...
Below are some key leadership principles that apply to (Subject Name)s development. Organizations that use such a 360 review process, however, can leave managers awash in a sea of data. This is important for the development of the individual being assessed. 360 degree feedback also known as multi-rater feedback is a proven method of supporting employee development that that has been growing in popularity during the past 15 years. It works by providing them with feedback from those who know their work best. 360 Degree Feedback Help your colleagues improve. This kind of feedback is intended to measure the development and progress of employees, by asking the people who work with them to provide feedback on behaviours that 360-Degree Feedback is a procedure followed by many organizations when conducting employee performance appraisals. 360 - Degree Feeback Template. What is 360 degree feedback? The number of elements per key skill/capability varies of course, so if necessary adjust the size of the ...
TY - JOUR. T1 - Altered pulsatile and coordinate secretion of pituitary hormones in aging. T2 - Evidence of feedback disruption. AU - Veldhuis, J. D.. PY - 1997. Y1 - 1997. N2 - A novel thesis is that healthy aging of neuroendocrine axes is marked by disruption of orderly patterns of hormone release (1). This can be quantified by a recently validated approximate entropy statistic applied to 24-hour hormone profiles, e.g., luteinizing hormone (LH), and growth hormone (GH). Moreover, more subtle disturbances of feedback control are indicated by decreased conditional regularity or synchrony (higher cross-approximate entropy) within coupled axes, such as ACTH-cortisol, LH-testosterone, etc. Such alterations can precede any changes in mean serum hormone concentrations, thus highlighting an impact of age on the feedback control mechanisms that coordinate the flow of signaling information within a neuroendocrine axis or network.. AB - A novel thesis is that healthy aging of neuroendocrine axes is ...
The audit and feedback process comprises one or more cycles of establishing best practice criteria, measuring current practice, feeding back findings, implementing changes, and further monitoring. This chain is only as strong as its weakest link. Feedback effects can be weakened by information-intention gaps (feedback fails to convince recipients that change is necessary), intention-behaviour gaps (intentions are not translated into action), or behaviour-impact gaps (actions do not yield the desired effect on patient care).9 The success of national audit programmes depends on local arrangements that promote action as well as measurement.10. A synthesis of 65 qualitative evaluations proposed ways of designing audit programmes to better align with local capacity, identity, and culture and to promote greater changes in clinical behaviour.11 Healthcare organisations have finite capacity, so audit programmes should be designed so that they require less work, make best use of limited local resources, ...
The neurotransmitter 5-hydroxytryptamine (5-HT, serotonin) mediates important brain functions and contributes to the pathophysiology and successful drug treatment of many common psychiatric disorders, especially depression. It is established that a key mechanism involved in the control of 5-HT neurones is feedback inhibition by presynaptic 5-HT autoreceptors, which are located on 5-HT cell bodies and nerve terminals. However, recent experiments have discovered an unexpected complexity of 5-HT neurone control, specifically in the form of postsynaptic 5-HT feedback mechanisms. These mechanisms have the physiological effects of 5-HT autoreceptors but use additional 5-HT receptor subtypes and operate through neural inputs to 5-HT neurones. A postsynaptic feedback system that excites 5-HT neurones has also been reported. This article discusses current knowledge of the pharmacology and physiology of these new found 5-HT feedback mechanisms and considers their possible contribution to depression
The neurotransmitter 5-hydroxytryptamine (5-HT, serotonin) mediates important brain functions and contributes to the pathophysiology and successful drug treatment of many common psychiatric disorders, especially depression. It is established that a key mechanism involved in the control of 5-HT neurones is feedback inhibition by presynaptic 5-HT autoreceptors, which are located on 5-HT cell bodies and nerve terminals. However, recent experiments have discovered an unexpected complexity of 5-HT neurone control, specifically in the form of postsynaptic 5-HT feedback mechanisms. These mechanisms have the physiological effects of 5-HT autoreceptors but use additional 5-HT receptor subtypes and operate through neural inputs to 5-HT neurones. A postsynaptic feedback system that excites 5-HT neurones has also been reported. This article discusses current knowledge of the pharmacology and physiology of these new found 5-HT feedback mechanisms and considers their possible contribution to depression
This study uncovered a function of the dual specificity ERK MAP kinase phosphatase, MKP3, for the specification of mesenchymal progenitors in the somite sclerotome. We showed that Mkp3 was expressed in a twin-striped pattern, which closely matched the emergence of scleraxis transcripts along the anteroposterior somite edges (Fig. 1). This pattern suggested a link between the modulation of FGF signalling by MKP3 and scleraxis expression. We demonstrated that somitic expression of Mkp3 in the dorsal sclerotome was itself dependent on active ERK MAP kinase. This implied that FGF signalling in dorsal sclerotome cells is modulated by a negative feedback loop, which involves MKP3 and ERK MAP kinase. Indeed, we found that the levels of Mkp3 transcripts detected in response to FGF beads can cycle between extensive overexpression after a short exposure to complete loss of endogenous Mkp3 message after 24 hours (Fig. 3A-C; data not shown). We showed by western blot analysis that this dynamic response ...
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As part of our PowerVR Graphics SDK v3.2 release, were announcing a public developer support and feedback system for PowerVR Insider members.
Patient Feedback for Vein Specialists of Pittsburgh in Oakmont, PA. Doctor Valerie Drnovsek, MD & team cares about your health and your feedback! See what people are saying about us today. We are conveniently located at 333 Allegheny Ave, #200, Oakmont, PA 15139. Book an appointment online or call (412) 312-4666.
A system and method for providing tiered patient feedback for use in automated patient care is described. Physiological measures are analyzed. Each physiological measure is representative of at least one of measured and derived patient information recorded on a substantially continuous basis and was retrieved from one such patient care record to determine a patient status. Tiered feedback is provided to an individual patient responsive to the patient status.
Interactions between cells bearing oncogenic mutations and the surrounding microenvironment, and cooperation between clonally distinct cell populations, can contribute to the growth and malignancy of epithelial tumors. The genetic techniques available in Drosophila have contributed to identify important roles of the TNF-α ligand Eiger and mitogenic molecules in mediating these interactions during the early steps of tumor formation. Here we unravel the existence of a tumor-intrinsic-and microenvironment-independent-self-reinforcement mechanism that drives tumor initiation and growth in an Eiger-independent manner. This mechanism relies on cell interactions between two functionally distinct cell populations, and we present evidence that these cell populations are not necessarily genetically different. Tumor-specific and cell-autonomous activation of the tumorigenic JNK stress-activated pathway drives the expression of secreted signaling molecules and growth factors to delaminating cells, which ...
Complementation of Ah receptor deficiency in hepatoma cells: negative feedback regulation and cell cycle control by the Ah receptor
Gesture feedback techniques are discussed that provide prompt feedback to a user concerning the recognition of one or more gestures. The feedback may be employed to confirm to a user that a gesture is being correctly recognized. The feedback may alternately warn a user that a desired gesture is not being correctly recognized, thereby allowing the user to cancel the erroneous gesture before it is invoked
Background: The integration of body-worn sensors with mobile devices presents a tremendous opportunity to improve just-in-time behavioral interventions by enhancing bidirectional communication between investigators and their participants. This approach can be used to deliver supportive feedback at critical moments to optimize the attainment of health behavior goals. Objective: The goals of this systematic review were to summarize data on the content characteristics of feedback messaging used in diet and physical activity (PA) interventions and to develop a practical framework for designing just-in-time feedback for behavioral interventions. Methods: Interventions that included just-in-time feedback on PA, sedentary behavior, or dietary intake were eligible for inclusion. Feedback content and efficacy data were synthesized descriptively. Results: The review included 31 studies (15/31, 48%, targeting PA or sedentary behavior only; 13/31, 42%, targeting diet and PA; and 3/31, 10%, targeting diet only). All
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): thesis or use of any of the information contained in it must acknowledge this thesis as the source of the quotation or information. i For many people images are a medium preferable to text and yet, with the exception of star ratings, most formats for conventional computer mediated feedback focus on text. This thesis develops a new method of crowd feedback for designers based on images. Visual summaries are generated from a crowds feedback images chosen in response to a design. The summaries provide the designer with impressionistic and inspiring visual feedback. The thesis sets out the motivation for this new method, describes the development of perceptually organised image sets and a summarisation algorithm to implement it. Evaluation studies are reported which, through a mixed methods approach, provide evidence of the validity and potential of the new image-based feedback method. It is concluded that the visual feedback
This paper is concerned with the linear/nonlinear aeroelastic control of 2-D supersonic lifting surfaces. Its goal is to provide the feedback control mechanism enabling one to enlarge the flight envelope by increasing the flutter speed, and also to control the character, benign/catastrophic of the flutter instability boundary. Structural and aerodynamic nonlinearities are included in the aeroelastic governing equations, and linear and nonlinear feedback controls in both plunging and pitching are employed in conjunction with proportional velocity feedback controls. The attention of the paper is focused on multiple Hopf bifurcations. In particular, the jumping phenomenon found in our previous work will be further investigated to reveal the physical implications. It is found that such a jumping occurs when the system has multiple families of limit cycles bifurcating from a same set of parameter values with multiple solutions for frequencies. The case investigated in this paper is restricted to zero ...
TY - JOUR. T1 - Feedback control for accurate shaping of ultrashort optical pulses prior to chirped pulse amplification. AU - Tanabe, Takasumi. AU - Ohno, Kimihisa. AU - Okamoto, Tatuyoshi. AU - Yamanaka, Mio. AU - Kannari, Fumihiko. PY - 2004/4. Y1 - 2004/4. N2 - Through experiments, we demonstrate accurate pulse shaping of femtosecond optical pulses in both amplitude and phase, prior to chirped pulse amplification. The nonlinear transfer function of the amplifier was compensated with feedback control referring to the amplified pulse shape measured by frequency resolved optical gating (FROG) or temporal analysis, by dispersing a pair of light e fields (TADPOLE). In FROG-referring control, the pulse shaper is adaptively controlled using a control index calculated from the two-dimensional FROG trace image, while in TADPOLE-referring control, the shaping phase-mask is corrected only a few times using the reconstructed spectrum phase of the output pulse. The performance and limitations of ...
The T-cell receptor (TCR) signalling machinery is central in determining the response of a T cell (establishing immunity or tolerance) following exposure to antigen. This process is made difficult by the narrow margin of self and non-self discrimination, and by the complexity of the genetic programmes that are induced for each outcome. Recent studies have identified novel negative feedback mechanisms that are rapidly induced by TCR engagement and that have key roles in the regulation of signal triggering and propagation. In vitro and in vivo data suggest that they are important in determining ligand discrimination by the TCR and in regulating signal output in response to antigen.
Written feedback will be given for tutorial work within a week. Written and/or oral feedback for workshops will be given either during the sessions or within a week. Written feedback will be provided on all summative practical work within 20 working days. Closed exam results with per-question breakdown are returned to the students via supervisors within 5 weeks (as per special approval by the University Teaching Committee). Outline answers are made available via the Chemistry web pages when the students receive their marks, so that they can assess their own detailed progress/achievement. The examiners reports for each question are made available to the students via the Chemistry web pages.. ...
Signaling in development is not always on or off; often, distinct intensity and duration of signaling leads to distinct outcomes. This is true for receptor tyrosine kinase (RTK) signaling in many contexts, where negative feedback often plays a role. Although such negative feedback might reduce or even turn off signaling output over time, continued signaling is often maintained for proper cell fate specification. In this issue, Sieglitz et al. identify a positive regulator of Ras-mediated RTK signaling that they name Rau. Rau is necessary to achieve specific signaling intensity for the differentiation of photoreceptors and of glia that wrap axons in the developing Drosophila eye disc. Both the negative regulator Sprouty and Rau influence signaling through the guanosine triphosphatase Ras; specifically, Rau forms a positive feedback loop important for counteracting the Sprouty negative feedback loop.. ...
Weve demonstrated the effectiveness of our protocol in a pilot study, and now were moving on to the next stage comprising a crossover clinical study with about 50 dialysis patients, says Chait, an expert on robust feedback control design. What we hope to show is that the demonstrated success with the pilot project translates to similar success with the larger study. This study is a much stronger test of the efficacy and safety of our protocol.. In dialysis patients the amount of EPO produced by the kidneys is inappropriately low for the level of anemia, and so they are treated with recombinant human EPO hormone in order to minimize the need for blood transfusions. Chait notes that current anemia management protocols for administering EPO are more or less one size fits all and fail to achieve the desired outcomes for many patients. That is where Chaits expertise comes in. By utilizing the principles of feedback control systems, his protocols enable medical personnel to personalize the EPO ...
The student feedback forms have, in essence, been a system of feedback that has been hit-and-miss with the students. On the one hand you have a system that tries to incorporate a flimsy notion of student rights whilst on the other hand you have a system that more often than not seems too distant from the student. The recent complaints directed at the feedback system, due to the delays in the publication of results, shows how certain shortcomings have limited the impact of the system at large.. Firstly it must be pointed out that with regard to the publication of results it is the lecturers who have the right of this issue. In a collective agreement made with the lecturers (which is in the process of being renegotiated), they are allowed to give in results by the end of March however truth be told this agreement is of suspect legal impact since no sanctions per se are highlighted for any breaches.. ...
In order to be successful, millennial leaders need regular, useful, and frequent feedback into their performance. Here are 5 reasons why thats so, according to one leadership consultant.
Download SPINA for free. Structure parameter inference approach for endocrine feedback control. SPINA is software for determining constant structure-parameters of endocrine feedback control systems from hormone levels obtained in vivo. The first version of this cybernetic approach allows for evualuating the functional status of the thyroid gland, i.e.
When a query is commenced, the query is resolved as a similarity search by a couple of search engines (including AltaVista, Excite, etc.). The Web assistant then collects the top n (60 for the prototype) documents returned and groups them into clusters. What differs here from the Scatter/Gather by [4] is that the feedback of relevant clusters and the documents are not only gathered for clustering again but the query is modified for better formulating the information needed.. As we mentioned earlier, relevance feedback has long been suggested as a solution for query modification. Rocchio describes an elegant approach and shows how the optimal vector space query can be derived using vector addition and subtraction given the relevant and non-relevant documents [6]. The probabilistic model proposed by Robertson and Sparck Jones shows how to adjust the individual term weight based on the distribution of the terms in relevant and non-relevant document set [5].. Now, given the cluster or concept as ...
Thalamic activity is regulated by corticothalamic feedback from layers 5B and 6. The nature of these feedback systems differs, one difference being that whereas layer 5 provides driver input, the layer 6 input is thought to be modulatory. To selectively study the importance of the layer 6 corticothalamic (L6 CT) projection, a transgenic mouse line was used in which layer 6 cells projecting to posterior medial thalamus (POm) were targeted for expression of channelrhodopsin-2 and in vivo electrophysiology recordings were done in urethane-anaesthetized mice. […]. Read More… ...
Thanks for this post, Matthew. This got me thinking a lot. For me, the difference between a tutoring session and a course is like that of a short story and a novel. In the session, I am making sure every moment and move matters. I feel the need to understand the assignment and writer as quickly as possible, make strategic choices about what to cover and how deeply, and get straight to the point. I am much more direct. I also cling to the prompt much more because I dont know if the instructor/ professor likes surprises and also because as an outside reader I feel thats one of my uses- I can usually see when something is going off track or not following directions. As a teacher, I think I spend a lot of time getting to know students and building a relationship with them. I comment mostly on ideas and logics that one might see as big picture concerns. And I deliberately write assignments to be open ended so that I am surprised. As I tutor I want the assignment and the prompt to match, in other ...
Additionally, for the majority of phosphorylation sites identified on the CD3γδζ subunits, we observed a gradual decrease in Zap-70 null/reconstituted SILAC ratios at early time points, followed by a gradual increase in Zap-70 null/reconstituted SILAC ratios at later time points (Fig. 7E2). These trends are consistent with the hypothesis of competing positive and negative feedback loops functioning at different stages of stimulation. At early time points, positive feedback mechanisms could be regulating these sites, leading to a gradual decrease in Zap-70 null/reconstituted SILAC ratios. At later time points, negative feedback mechanisms could be regulating these same sites, leading to an increase in Zap-70 null/reconstituted SILAC ratios when Zap-70 is removed (Fig. 7E1). It has previously been shown that Erk positive and SHP-1 negative feedback pathways can compete to either activate or inhibit Lck function to allow for T cells to discriminate between self and foreign ligands (47).. To ...
As I said, I agree (for arguments sake) that the positive feedback loop is essential for switching the climate-systems between cold and warm states that are relative stable (i.e. ice-ages and interglacials). However, the positive feedback loop predominates only during the transition between states. Within each relatively stable state negative feedback must predominate or else stability would not be maintained. And today we find ourselves in just such a stable, negative feedback-dominated state in which climatic stability and equilibrium are maintained dynamically by the systems intrinsic negative feedback mechanism. In this state any global warming that occurs will be arrested automatically by the dominant negative feedback mechanism so that the default equilibrium temperature of the system is maintained within relatively narrow bounds. I think this by itself explains why no-one can find the tropospheric hotspot, regardless of any problems over our techniques of scientific measurement and the ...
The period (per) gene likely encodes a component of the Drosophila circadian clock. Circadian oscillations in the abundance of per messenger RNA and per protein (PER) are thought to arise from negative feedback control of per gene transcription by PER. A recently identified second clock locus, timeless (tim), apparently regulates entry of PER into the nucleus. Reported here are the cloning of complementary DNAs derived from the tim gene in a two-hybrid screen for PER-interacting proteins and the demonstration of a physical interaction between the tim protein (TIM) and PER in vitro. A restricted segment of TIM binds directly to a part of the PER dimerization domain PAS. PERL, a mutation that causes a temperature-sensitive lengthening of circadian period and a temperature-sensitive delay in PER nuclear entry, exhibits a temperature-sensitive defect in binding to TIM. These results suggest that the interaction between TIM and PER determines the timing of PER nuclear entry and therefore the duration ...
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Negative feedback is often referred to as shunt feedback and here in this application we will use it in conjunction with emitter degeneration. How is this accomplished? Negative feedback or shunt feedback is accomplished by adding one resistor and a capacitor between collector and base of our transistor. For this exercise Im going to go to an r.f. application and replace a resistor with a choke, it could easily have been a transformer
... the conjugate gradient method falls out as an optimal feedback controller,. u. =. k. (. x. ,. v. ). :=. −. γ. a. ∇. f. (. x. ) ... are variable feedback gains.[16] Conjugate gradient on the normal equations[edit]. The conjugate gradient method can be applied ... Conjugate gradient method as optimal feedback controller for double integrator[edit]. The conjugate gradient method can also be ... 8 Conjugate gradient method as optimal feedback controller for double integrator. *9 Conjugate gradient on the normal equations ...
Feedforward and feedback interactions[edit]. An auditory-motor interaction may be loosely defined as any engagement of or ... Feedback interactions are particularly relevant in playing an instrument such as a violin, or in singing, where pitch is ... If auditory feedback is blocked, musicians can still execute well-rehearsed pieces, but expressive aspects of performance are ... Repp, B. H. (1999). "Effects of auditory feedback deprivation on expressive piano performance". Music Perception. 16: 409-438. ...
Feedback[edit]. More recent work has expanded the role of the cutaneous mechanoreceptors for feedback in fine motor control.[3] ...
Feedback Control[edit]. Active feedback control of MHD instabilities should allow operation beyond the "passive" stability ... Feedback experiments have begun in DIII-D and HBT-EP, and feedback control should be explored for the RFP and other ... If the plasma rotation needed to stabilize the resistive wall mode cannot be maintained, feedback stabilization with external ... will allow active feedback control of the internal profiles in the near future. Such work is beginning or planned in most of ...
User feedback[edit]. Students' exchange of feedback both with teachers and their peers is possible through LMS. Teachers may ... Students' feedback is an instrument which help teachers to improve their work, identify what to add or remove from their ... create discussion groups to allow students feedback and increase the interaction in course. ...
Negative feedback mechanisms[edit]. Negative regulators of type I IFN signaling, such as suppressor of cytokine signaling 1 ( ...
Positive feedback[edit]. Over time a positive feedback mechanism, one that involves a loop in which an increase in a quantity ... Several alternative hypotheses use the same genetic runaway (or positive feedback) mechanism but differ in the mechanisms of ... Over subsequent generations this could lead to runaway selection by positive feedback, and the speed with which the trait and ...
Feedback reply[edit]. Hello, Jakobees. You have new messages at Wikipedia:Requests_for_feedback/2011_May_15#Multnomah_Greyhound ... Be sure to RSVP and share the results of your work HERE (number of images uploaded, links to galleries, successes, feedback, ...
Feedback[edit]. The job characteristic dimension, feedback, increases employees' knowledge of results. Feedback refers to the ... Emails have a time lag that does not allow for immediate feedback; telephone conversations make it harder to decipher the ... Communication personalized for individual needs is important for feedback interactions.[41] People differ in their need for ... The clarity, speed of response, richness of the communication, frequency, and quality of the feedback are often reduced when ...
... feedback[edit]. This technique allows the SSEP to directly control the stimulus that elicits the SSEP without ... Regan D (1975). "Colour coding of pattern responses in man investigated by evoked potential feedback and direct plot techniques ...
Week 9: Getting and giving feedback[edit]. In class. *As a group, have the students offer suggestions for improving one or two ... Week 10: Responding to feedback[edit]. In class. *Open discussion of the concepts of neutrality, media literacy, and the impact ...
Tactile feedback[edit]. The tactile feedback from proprioception is derived from the proprioceptors in the skin, muscles, and ... tactile feedback can be used to treat speech disorders.[citation needed] ... "Tactile Evaluation Feedback System for Multi-Layered Structure Inspired by Human Tactile Perception Mechanism". Sensors (Basel ...
Feedback categories[edit]. Aerodynamic whistles rely on the instability of flows and feedback that enhances the instability. ... This action may be called quasi-compressible feedback. . Class III[edit]. The feedback is compressible and depends on the speed ... There are several ways to describe the feedback process. Class I[edit]. The feedback is essentially incompressible; the speed ... This may be called acoustic feedback. The figure on the right shows a block diagram of these feedback mechanisms. All ...
Feedback loop[edit]. The DPM suggests that a singular disclosure event can affect both future disclosure likelihood and long- ...
Feedback processes. Each glacial period is subject to positive feedback which makes it more severe, and negative feedback which ... Some believe that the strength of the orbital forcing is too small to trigger glaciations, but feedback mechanisms like CO. 2 ... This mitigates the albedo feedback, as does the lowering in sea level that accompanies the formation of ice sheets.[45] ... The glacial retreat induced by this or any other process can be amplified by similar inverse positive feedbacks as for glacial ...
Feedback[edit]. An additional difference exists in the biofeedback created that allows the user to "feel" what is being held. ... No gripping feedback is provided once the hook has closed around the object being held. Voluntary closing systems provide ... This feedback enabled the participant to effectively modulate the grasping force of the prosthesis with no visual or auditory ... Jan 2014). "Restoring natural sensory feedback in real-time bidirectional hand prostheses". Sci. Transl. Med. 6 (222): 222. doi ...
Feedback on the final report[edit]. This section needs expansion. You can help by adding to it. (February 2019) ... Some media feedback was that this approach was part of the problem, citing that ASIC, in particular, had a long history of not ...
Very short feedback loop and adaptation cycle[edit]. A common characteristic in agile software development is the daily stand- ... This requires the team to make its own decisions on prioritization without real feedback from the business. They try to solve ... Projects that develop in iterations can constantly gather feedback to help refine those requirements. ... continuous feedback and more flexibility when responding to changes. ...
... designed an auditory feedback perturbation protocol in order to explore the role of auditory feedback in adult song maintenance ... Auditory feedback in birdsong learning[edit]. Early experiments by Thorpe in 1954 showed the importance of a bird being able to ... If this is true, then the firing rates of LMAN neurons will be sensitive to changes in auditory feedback.. *Efference copy ... 6 Auditory feedback in birdsong learning *6.1 Mirror neurons and vocal learning ...
On other articles with feedback, such as this one. (Look for a link on these article talkpages to see feedback. Note that only ... This page is currently inactive and is retained for historical reference. The article feedback tool was removed from the ... Article feedback allows anyone to easily make suggestions about a page and help editors improve articles. Learn more... ... Article feedback creates new opportunities for editors and readers to interact, leading to better quality articles. ...
Feedback: it is another component of the IS, that defines that an IS may be provided with a feedback (Although this component ...
They operate only on the binary feedback received upon congestion and do not assume any knowledge concerning the state of the ... VCP - The variable-structure congestion control protocol (VCP) uses two ECN bits to explicitly feedback the network state of ...
". "Feedback". New Scientist. 9 July 2008. EasyJet Inflight Duty Free Catalogue March 2009 "Background Briefing - 15 October ...
Feedback I like it, I hate it, Please don't link to - LinkBot 00:53, 18 Dec 2004 (UTC). ...
Learning is a back-loop process, and feedback loops can be illustrated as: single-loop learning or double-loop learning. ... Causal loop diagrams - displaying tendency and a direction of information connections and the resulting causality and feedback ...
The consumer's purchase and post-purchase activities have the potential to provide important feedback to marketers.[43] Foxall ... suggested that post-purchase evaluation provides key feedback because it influences future purchase patterns and consumption ...
Replacing the electrodes with soft hydrogels allows ionic transport to replace electron transport. Aqueous ionic hydrogels can deliver potentials of multiple kilovolts, despite the onset of electrolysis at below 1.5 V.[3][4] The difference between the capacitance of the double layer and the dielectric leads to a potential across the dielectric that can be millions of times greater than that across the double layer. Potentials in the kilovolt range can be realized without electrochemically degrading the hydrogel.[3][4] Deformations are well controlled, reversible, and capable of high-frequency operation. The resulting devices can be perfectly transparent. High-frequency actuation is possible. Switching speeds are limited only by mechanical inertia. The hydrogel's stiffness can be thousands of times smaller than the dielectric's, allowing actuation without mechanical constraint across a range of nearly 100% at millisecond speeds. They can be biocompatible.[3][4] Remaining issues include drying of ...
Pinzon, D., Vega, R., Sanchez, Y. P., & Zheng, B. (2017). Skill learning from kinesthetic feedback. American Journal Of Surgery ...
... group membership feedback; quality control and peer review; and a documented group memory or knowledge base.[18] As groups work ...
Following the availability of programmable music sequencers such as the Synclavier and Roland MC-8 Microcomposer in the late 1970s, bass synths began incorporating sequencers in the early 1980s. The first bass synthesizer with a sequencer was the Firstman SQ-01.[104][105] It was originally released in 1980 by Hillwood/Firstman, a Japanese synthesizer company founded in 1972 by Kazuo Morioka (who later worked for Akai in the early 1980s), and was then released by Multivox for North America in 1981.[106][107][46] A particularly influential bass synthesizer was the Roland TB-303.[108] Released in late 1981, it featured a built-in sequencer and later became strongly associated with acid house music.[109] Bass synthesizers began being used to create highly syncopated rhythms and complex, rapid basslines. Bass synth patches incorporate a range of sounds and tones, including wavetable-style, analog, and FM-style bass sounds, delay effects, distortion effects, envelope filters. In popular music, these ...
... The National Library of Medicine welcomes your feedback on this training product. In particular, let us know if there ...
Please fill out the form below to submit website feedback or ask a question. If you would like to contact the webmaster ...
Your valuable suggestions and feedbacks are highly sought by us for improving our services. Please fill in the form below and ...
Feedback. The BBC finally begins broadcasting digital stereo with television on. 31 August, using the Nicam system its ...
We read all feedback carefully, but we are unable to respond to each submission individually. If you provide your email address ... Please read Apples Unsolicited Idea Submission Policy before you send us your feedback. ...
Feedback. A COUPLE of weeks ago we ran a piece debunking warnings about computer. viruses supposedly spread by text-only e-mail ... FEEDBACK would not normally venture into the cold waters of the North Sea,. but may be tempted by a plea from a distraught ... With such a prize at stake, Feedback wonders. whether it would be worth hiring an undersea exploration company to help,. ... A fine idea, says Feedback, but unfortunately thats not quite what. Daimler-Benz has in mind. Instead, it is launching a ...
We read all feedback carefully, but we are unable to respond to each submission individually. If you provide your email address ... Please read Apples Unsolicited Idea Submission Policy before you send us your feedback. ... Which area of the application are you providing feedback on?. Select Area:. Codecs. Droplets. Distributed encoding. ...
Blind feedback[edit]. Pseudo relevance feedback, also known as blind relevance feedback, provides a method for automatic local ... We can usefully distinguish between three types of feedback: explicit feedback, implicit feedback, and blind or "pseudo" ... a positional relevance feedback for pseudo-relevance feedback has been proposed to select from feedback documents those words ... Implicit feedback[edit]. Implicit feedback is inferred from user behavior, such as noting which documents they do and do not ...
Feedback (2019) TV-14 , 1h 37min , Horror, Thriller , 1 March 2019 (Spain) ... Raddio Studio Invasion Thriller Feedback Starring Arrives on DVD this February 31 January 2020 , Horror News ...
Feedback (2019) TV-14 , 1h 37min , Horror, Thriller , 1 March 2019 (Spain) ... Feedback is a decent film that is infested with the now unavoidable liberal propaganda in everything on television. This time ... Raddio Studio Invasion Thriller Feedback Starring Arrives on DVD this February 31 January 2020 , Horror News ...
Audio feedback (also known as acoustic feedback, simply as feedback, or the Larsen effect) is a special kind of positive loop ... To avoid feedback, automatic anti-feedback devices can be used. (In the marketplace these go by the name "feedback destroyer" ... Pitched feedback[edit]. Pitched melodies may be created entirely from feedback through changing the angle between a guitar and ... For instance, an A would feed back maybe at about four feet from the speaker, whereas a G would feed back maybe three and a ...
Feedback. Thank you for taking the time to give us feedback.. We are continuously working to improve the site, and your ... I have feedback: Choose a Topic. Overall Site. Name Email How would you rate the site overall? Bad 1.. 2.. 3.. 4.. 5. Good. How ... If youd like to leave feedback about your experience on the site, please select Overall Site from the dropdown below.. If you ...
... We encourage you to provide feedback so that we can improve our documentation. You can use either of ... Online feedback system-Click TechLibrary Feedback, on the lower right of any page on the Juniper Networks TechLibrary site, and ... and use the pop-up form to provide feedback. ...
Website feedback. We want to hear from you. Our corporate website is designed to provide an easy-to-use, informative, online ...
Heres the link to find the Feedback page with a list of classes that have ended and for which feedback is needed: www.arrl.org ... Pending Feedback Requests Follow this link to find a list of any pending class feedback requests. ... Instructor Feedback. Recognizing the Valuable Contribution of License Instructor Volunteers. The ARRL has always valued the ... Your feedback will provide us with information about your activities and a way to recognize the important contribution that you ...
Feedback, Reinforcement, and Intrinsic Motivation 6 Feedback,Feedback, Reinforcement,Reinforcement, and Intrinsicand Intrinsic ... FW279 Feedback * 1. Chapter 6: Feedback, Reinforcement, and Intrinsic Motivation 6 Feedback,Feedback, Reinforcement, ... Provide sincere and contingent feedback. • Provide motivational and instructional feedback. • Use varied types of feedback- ... Feedback: Positive feedback increases intrinsic motivation. * 35. Other Determinants of Intrinsic Motivation • Higher levels of ...
Feedback Take Part in BBC Sport Online. Dont just read the sport news, be an active part of BBC Sport Online. You can publish ... TV and Radio sports programme feedback. Unfortunately we are not able to answer any comments or questions about BBC Sport ...
Types of Feedback. There are two types of feedback: positive (reinforcing) feedback and negative (balancing) feedback. (Note ... Why Look for Feedback?. Looking for feedback is an important concept when thinking about systems. Feedback occurs when a ... But looking for feedback might help you see that A causes B, and over time, B affects A. This perspective of feedback helps you ... Negative feedback, also known as negative loops, work to negate change and drive stability in systems. Again, negative feedback ...
Wed like your active participation. If youre interested in becoming a member of this site, advertising, the products, services or contributing content to this site, fill out the form below ...
Feedback Fill and submit the Feedback form and we will try to fulfill your request to our best ability. ... Hi Paul, thanks for feedback. All the Stick A Note text files are kept in the Stick A Note exe folder, i.e. C:\Portables\Stick ... Hi Marni, thanks for your feedback.. Yes I try to make little useful apps which helps the user by doing a job in simple way. ... Hi Karolis, thanks for your feedback. Yes the size and move note option is in the works, and I promise you to give it by this ...
... you can use the FeedBack Loop (FBL) to identify campaigns in your traffic that are getting a high volume of complaints from ...
Readers respond to Solving soot, trade-offs of horn size for male Soay sheep and the huge galactic explosion story from 50 years ago.
For feedback on other IETF.org websites, please use these feedback channels:. For issues with datatracker.ietf.org, please send ... Website feedback. Please note the suggestions below for providing feedback on the IETF website. ...
... teaching and assessment of units and courses in response to student feedback and unit evaluations. ... Unit evaluation feedback. Find out about the changes made to curricula, teaching and assessment of units and courses in ... Evaluation feedback. Health (MSc/PG Dip Sport and Exercise Medicine and MSc Sports Physiotherapy (distance -learning). ... Changes made in response to student feedback. Each semester the University asks all students to complete unit evaluations about ...
Feedback We welcome your comments for improvement of this site and our services. ...
Thank you for your participation in the McAfee Beta Program. Your information has been sent to the McAfee development team. They will contact you if they need any additional information ...
Your comments matter to us. Please take a moment to tell us about your experience. Let us know what you think about the Juniper Networks website.
Ingrid A. van de Leemput, Marieke Wichers, Angélique O. J. Cramer, Denny Borsboom, Francis Tuerlinckx, Peter Kuppens, Egbert H. van Nes, Wolfgang Viechtbauer, Erik J. Giltay, Steven H. Aggen, Catherine Derom, Nele Jacobs, Kenneth S. Kendler, Han L. J. van der Maas, Michael C. Neale, Frenk Peeters, Evert Thiery, Peter Zachar, and Marten Scheffer ...
While you consider doing some financial investing in NRO: a) send me your reasons for giving, when you have. b) send me your wish-lists: what you like most, what you
Feedback. Thursday, 16 August 2007. A little over two weeks ago I began experimenting with a new format for the default RSS ... Put another way, they wanted the old feed back.. My goal is to maintain a balance between simplicity and reader satisfaction. ... I got a ton of terrific feedback from readers regarding the new feed format. Most, as I expected, was effusively positive, ...
  • [1] There are many signals during the search process that one can use for implicit feedback and the types of information to provide in response. (wikipedia.org)
  • It is an indicator of how well the search result met the query intent of the user, and is used as a feedback mechanism to improve search results. (wikipedia.org)
  • Please fill out the form below to submit website feedback or ask a question. (google.com)
  • Fill and submit the Feedback form and we will try to fulfill your request to our best ability. (google.com)
  • We also welcome feedback from NMH Workers and encourage you to complete this feedback form . (warwick.ac.uk)
  • The feedback form is completely anonymous and NMH staff can not be identified through their submission unless they wish to receive a reponse. (warwick.ac.uk)
  • To send your feedback, please complete the form below. (isaca.org)
  • Safe Software greatly values feedback from training course attendees and our feedback form is your chance to tell us what you really think about how well we're meeting your training goals. (amazonaws.com)
  • You can fill in the feedback form now, but you'll also be reminded by email shortly after your course. (amazonaws.com)
  • If you would like to provide us with feedback, please contact [email protected] or go to http://marvel.com/help/contact and fill out the feedback form. (marvel.com)
  • If you have feedback about the Evaluation and Assessment component of the Toolkit, please use this form to provide it. (carleton.edu)
  • The more feedback customers give, the better your business can be-and complaints can form the start of a beautiful relationship. (americanexpress.com)
  • To ensure efficient and rapid feedback, we ask you to fill in all the fields of the form and elaborate on your question. (aeroflot.ru)
  • Click here to engage in a possibly more authentic form of feedback. (google.com)
  • Click Here to take a look at how feedback can be given by first responding to the student on the Response Form, then using a mail merge to send feedback to your students. (google.com)
  • The term "epistemic feedback" is a form of feedback which refers to an interplay between what is being observed (or measured) and the result of the observation. (wikipedia.org)
  • Thank you for taking the time to provide feedback about the East of England Ambulance Service. (www.nhs.uk)
  • Certain tools are well suited for focused individual feedback, while others can help you provide feedback quickly in large groups. (tue.nl)
  • With expert feedback, you, the teacher and expert, provide feedback on a student's work. (tue.nl)
  • This is the only way you can provide feedback that works. (forbes.com)
  • Provide feedback about Windows and apps by sharing your suggestions or problems. (microsoft.com)
  • To provide feedback to healthfinder.gov you can mail your comments or questions to [email protected] . (healthfinder.gov)
  • Thank you for taking the time to provide feedback about the new icons. (microsoft.com)
  • For feedback providers, she delivers insights into constructive criticism and the difference between being heard and being obnoxious. (jhu.edu)
  • It is also important to make online interactions safe and encouraging - ask for constructive peer feedback only and remind them there are no stupid questions. (tue.nl)
  • Now, there are students who are bored of everything so don't expect only accurate answers, but I think you'll also get some interesting and constructive feedback. (usingenglish.com)
  • This information is available in each member's Feedback Profile, and helps prospective trading partners buy and sell with confidence. (ebay.com)
  • Feedback manipulation, which is any attempt to artificially increase your feedback score or lower another member's, is not allowed. (ebay.com)
  • To create a survey using the Neighborhood Feedback survey template, just sign up or sign in to SurveyMonkey. (surveymonkey.com)
  • Send feedback on. (google.com)
  • Disability Services will send reminders to students on a termly basis to encourage them to give their feedback and share any comments and suggestions. (warwick.ac.uk)
  • With engaging and accessible contributions from leading scholars in communication, management, and social, clinical, and educational psychology, the editors conclude with an insightful synthesis of the chapters, extracting how-to principles of feedback that apply across environments and circumstances. (peterlang.com)
  • According to Ashby (1956), mathematicians and theorists interested in the principles of feedback mechanisms prefer the definition of "circularity of action", which keeps the theory simple and consistent. (wikipedia.org)
  • Looking for feedback offers the potential to understand and manage a richer set of outcomes from decisions. (cdc.gov)
  • Using client feedback to improve couple therapy outcomes: an RCT in a naturalistic setting. (slideshare.net)
  • Students who are accessing Non Medical Helper Support (NMH) (i.e. specialist study skills or mentoring) via the Disabled Student Allowances, can also leave their feedback on the support they have received at this link which is the University's registration page as an approved NMH provider through the DSAs Quality Assurance Group. (warwick.ac.uk)
  • You can find additional information about the University's formal Feedback and Complaints Procedure at this link . (warwick.ac.uk)
  • Student feedback on teaching is an important element of the University's process for quality assurance of education. (nus.edu.sg)
  • Instead of hearing feedback as criticism, consider it an opportunity to learn, Heen says. (shrm.org)
  • And the majority of art is created without continuous feedback and unsolicited criticism. (thenextweb.com)
  • Once you hear it, it's been through all the feedback and criticism that matters to get it to a completed (and promotable) state. (thenextweb.com)
  • Certain mechanisms in the human body-such as those that regulate temperature of blood glucose levels-are great examples of negative feedback loops. (cdc.gov)
  • In the context of TiS skills, we can think about feedback loops as the mechanisms of action that connect stocks to the operation of flows. (cdc.gov)
  • All comments provided through the above feedback mechanisms are anonymous and confidential and will be used for reporting, planning and reviewing purposes. (warwick.ac.uk)
  • Implicit feedback is inferred from user behavior, such as noting which documents they do and do not select for viewing, the duration of time spent viewing a document, or page browsing or scrolling actions. (wikipedia.org)
  • Studies have linked "feedback-seeking behavior" to higher job satisfaction, greater creativity, faster adaptation in a new role and lower turnover, she says. (shrm.org)
  • feedback - Create and manipulate a feedback widget to display feedback on the current status of an ongoing operation to the user. (freebsd.org)
  • Any attempt to manipulate feedback or Detailed Seller Ratings (DSRs) is not allowed. (ebay.com)
  • The relevance feedback information needs to be interpolated with the original query to improve retrieval performance, such as the well-known Rocchio algorithm . (wikipedia.org)
  • To improve the quality of expansion words in pseudo-relevance feedback, a positional relevance feedback for pseudo-relevance feedback has been proposed to select from feedback documents those words that are focused on the query topic based on positions of words in feedback documents. (wikipedia.org)
  • We are continuously working to improve the site, and your feedback is essential. (nyu.edu)
  • When you're done, get post-event feedback to improve for next time. (surveymonkey.com)
  • Does a popular client feedback model improve psychotherapy outcome? (slideshare.net)
  • RIS offers a range of support to academics, throughout the research lifecycle, and always welcomes your feedback to further improve our services to you. (bath.ac.uk)
  • However if the goal is to improve quality, then epistemic feedback could be a positive factor to periodically report areas which need improvement. (wikipedia.org)
  • I really need a feedback for my farm holidays in Italy page, and as you can see im new here I don't even understand how I found this forum. (dynamicdrive.com)
  • Audio feedback (also known as acoustic feedback , simply as feedback , or the Larsen effect ) is a special kind of positive loop gain which occurs when a sound loop exists between an audio input (for example, a microphone or guitar pickup ) and an audio output (for example, a power amplified loudspeaker ). (wikipedia.org)
  • Feedback is almost always considered undesirable when it occurs with a singer's or public speaker's microphone at an event using a sound reinforcement system or PA system . (wikipedia.org)
  • Feedback occurs when a condition in a system causes activity that then impacts that initial condition. (cdc.gov)
  • Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop. (wikipedia.org)
  • There are two types of feedback: positive (reinforcing) feedback and negative (balancing) feedback. (cdc.gov)
  • Negative feedback, also known as negative loops, work to negate change and drive stability in systems. (cdc.gov)
  • Again, negative feedback doesn't mean a negative outcome, as it can stabilize systems. (cdc.gov)
  • Take the example of regulating body temperature and break it down to see how negative feedback works. (cdc.gov)
  • The green arrow illustrates negative feedback. (cdc.gov)
  • Feedback consists of a positive, negative, or neutral rating, along with a short comment. (ebay.com)
  • Since Feedback becomes a permanent part of your record, buyers are encouraged to contact sellers to try to resolve any issues before leaving neutral or negative Feedback. (ebay.com)
  • We also have safeguards in place to protect sellers against unfair negative or neutral Feedback. (ebay.com)
  • Negative feedback: If the signal feedback is of opposite polarity or out of phase by 180° with respect to input signal, the feedback is called as negative feedback. (wikipedia.org)
  • As an example of negative feedback, the diagram might represent a cruise control system in a car, for example, that matches a target speed such as the speed limit. (wikipedia.org)
  • The effects of epistemic feedback can be viewed as either negative or positive depending on the goal of the observations. (wikipedia.org)
  • When trying to get a secret survey of results, epistemic feedback can be seen as a negative factor which distorts the original data. (wikipedia.org)
  • The National Library of Medicine welcomes your feedback on this training product. (nih.gov)
  • Thank you for taking the time to give us feedback. (nyu.edu)
  • Looking for feedback in a system helps give you a better understanding of how actions shape the environment and how the ever-changing environment then shapes activity. (cdc.gov)
  • Unit evaluations enable students to give anonymous feedback about the curriculum, teaching and assessment. (bath.ac.uk)
  • Organizations spend millions of dollars training leaders and managers on how to give feedback. (shrm.org)
  • While I'm sure their intentions are in the right place, unfortunately the feedback these types of people give can often have disastrous consequences. (thenextweb.com)
  • The risk comes when the feedback temporarily slants the evaluation of quality so that long-term performance is hindered by distortion in the way results were measured. (wikipedia.org)
  • Do you bristle when someone offers feedback that seems unfair or untrue? (shrm.org)
  • We welcome your feedback on anything related to the Toronto Chapter and will try to respond to all inquiries within two business days. (isaca.org)
  • The method is to do normal retrieval to find an initial set of most relevant documents, to then assume that the top "k" ranked documents are relevant, and finally to do relevance feedback as before under this assumption. (wikipedia.org)
  • Find out about the changes made to curricula, teaching and assessment of units and courses in response to student feedback and unit evaluations. (bath.ac.uk)
  • Businesses that balance customer feedback and analytics alongside their product roadmap understand who they are - and who they want to be - as a company. (cmswire.com)
  • A few months ago, a teacher of mine handed us some feedback sheets with interesting questions, most of them having a 1 to 5 scale as an answer and I am sure it will do (and I think it did) good, there's nothing that can go wrong. (usingenglish.com)
  • The format of this training course undergoes regular changes prompted by comments and feedback from previous courses. (amazonaws.com)
  • We value your feedback and encourage students to complete the questionnaire in the student feedback section . (warwick.ac.uk)
  • Students Feedback! (usingenglish.com)
  • I wish I can get my students' feedback and their ideas of my style of teaching. (usingenglish.com)
  • But sometimes I feel like I don't want to get students feedback! (usingenglish.com)
  • I highly recommend that you request feedback from your students. (usingenglish.com)
  • Informal feedback can be a good source of honest opinions- chatting casually to students outside class can be very revealing if conditions are created where they feel they can speak frankly. (usingenglish.com)
  • The feedback is helpful to the university in the continuous quest for improvements in teaching and thereby enhancing the students' learning experience in NUS. (nus.edu.sg)
  • You will learn about common barriers to providing feedback and how to surmount them, and can download additional background material, references, and tips for giving feedback to your students, residents, postdoctoral fellows and other trainees. (hopkinsmedicine.org)
  • We would very much like your feedback and suggestions for support on any of our service areas you have experienced, enabling us to look at possible improvements or additional services that might be necessary. (bath.ac.uk)
  • If your feedback refers to a specific URL on www.dpreview.com, let us know. (dpreview.com)
  • Jimi Hendrix was an innovator in the intentional use of guitar feedback, alongside effects units such as the Univibe and wah-wah pedal in his guitar solos to create unique sound effects and musical sounds. (wikipedia.org)
  • We read all feedback carefully, but we are unable to respond to each submission individually. (apple.com)
  • The online feedback questionnaire is designed to be anonymous and your submission will not be linked to you in any way nor you can be identified once you have completed it. (warwick.ac.uk)
  • The online Student Feedback Exercise is usually conducted two weeks before the start of each Semester Examination and one week before the start of the Special Term Examination. (nus.edu.sg)
  • In addition, instructors will not have access to the student feedback responses until after the examination results have been released. (nus.edu.sg)
  • If you want to be even more involved, then join the Windows Insider program and keep up with the latest alerts and announcements, rate the builds, participate in feedback Quests, and earn badges. (microsoft.com)
  • This policy helps protect the integrity of the eBay feedback system, and builds trust between buyers and sellers. (ebay.com)
  • You need feedback early and continuously. (eweek.com)
  • Positive feedback, also known as positive loops, act to reinforce change. (cdc.gov)
  • A simple example of positive feedback is compounding interest in a bank account. (cdc.gov)
  • It's important to note that a positive feedback doesn't necessarily mean growth in the system. (cdc.gov)
  • In this system depicting an infectious disease, the blue arrow is showing positive feedback. (cdc.gov)
  • Positive feedback: If the signal feedback from output is in phase with the input signal, the feedback is called positive feedback. (wikipedia.org)
  • Use varied types of feedback-verbal praise, facial expressions, and pats on the back. (slideshare.net)
  • If you have a question about your account, a moderation issue or any enquiry you do not wish to share in the public forum you can write a new private feedback message . (dpreview.com)
  • In addition, established writers ranging from Julia Alvarez and Khaled Hosseini to Gregory Maguire and Jodi Picoult share their own feedback stories -- from useful to inspiring to deranged -- underscoring Cole's message that feedback plays a critical role in every writer's success. (jhu.edu)
  • That means buyers should feel free to leave honest Feedback without fear of retaliation. (ebay.com)
  • The Giving Feedback online course (30 minutes) provides faculty and resident supervisors with the knowledge and skills they need to provide effective feedback to a learner, whether in the laboratory, classroom or clinic. (hopkinsmedicine.org)
  • Disability Services will contact you on a termly basis to ask for your feedback. (warwick.ac.uk)
  • In the emails I sent, I was asking people for feedback and for potential introductions to customers who might be interested in the unique social media marketing services I was offering. (thenextweb.com)
  • Each time you buy or sell something, you have an opportunity to leave Feedback about your experience. (ebay.com)
  • In the first book to focus on this vital but delicate dynamic, Joni B. Cole applies first-person experience, real-life teaching examples, and her own unique ability to entertain while reaffirming the many merits of feedback. (jhu.edu)
  • Do you want to get feedback from a friend, family member, or acquaintance on social media who have no experience with what you're building and won't be your potential customer? (thenextweb.com)
  • Customer feedback feeds improved customer service, product refinements and the broader customer experience. (cmswire.com)
  • Employee feedback is the key to improved employee experience but it's not as simple as sending a survey. (cmswire.com)
  • Your feedback will provide us with information about your activities and a way to recognize the important contribution that you make to Amateur Radio. (arrl.org)
  • Through a mixture of instruction, anecdotes, and moral support, Cole manages to detoxify the feedback process with humor and without laying blame, inspiring both sides of the interaction to make the most of this powerful resource. (jhu.edu)
  • The new icons incorporate customer feedback we had received on the old icon design: bolder lines and higher color contrast helps make icons are more visible when using your computer near a window, a laptop in direct sunlight, or for folks with less than perfect vision. (microsoft.com)
  • Block diagram of the signal-flow for a common feedback loop. (wikipedia.org)
  • The conditions for feedback follow the Barkhausen stability criterion , namely that, with sufficiently high gain, a stable oscillation can (and usually will) occur in a feedback loop whose frequency is such that the phase delay is an integer multiple of 360 degrees and the gain at that frequency is equal to 1. (wikipedia.org)
  • although in that case the feedback loop is purely electronic, the principle is the same. (wikipedia.org)
  • You can read more about effective feedback in higher education in the documents in the right column. (tue.nl)
  • Read a note from eBay's founder , Pierre Omidyar, outlining the philosophy, values, and benefits of the Feedback Forum. (ebay.com)
  • All feedback is read and if necessary acted upon, but we do not have the resources to answer every message personally. (dpreview.com)
  • You want the right kind of feedback to move to the next phase of design. (eweek.com)
  • Do you collect user or customer feedback? (addthis.com)
  • The majority of companies are ineffective at working customer feedback into corporate decisions. (cmswire.com)
  • As long as you're soliciting customer feedback and then acting accordingly, your efforts will be rewarded. (cmswire.com)
  • Businesses owners can collect all the customer feedback they want, but it's all for naught if the information collected goes unused. (cmswire.com)
  • Enterprise feedback management solutions provide organizations with an important and unique perspective of customer, employee and partner issues, desires and expectations. (gartner.com)
  • Some experiments such as results from the Cornell SMART system published in (Buckley et al.1995), show improvement of retrieval systems performances using pseudo-relevance feedback in the context of TREC 4 experiments. (wikipedia.org)