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Feedback loop

Computational analysis reveals the coupling between bistability and the sign of a feedback loop in a TGF-β1 activation model

Computational analysis reveals the coupling between bistability and the sign of a feedback loop in a TGF-β1 activation model

... positive feedback region is also an interesting prop- erty of the system, since it suggests that in reality, a bistable TGF-β1 activation system most likely also has positive PLS-PAI1 ...negative feedback ...

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Qualitative control of undesired oscillations in a genetic negative feedback loop with uncertain measurements

Qualitative control of undesired oscillations in a genetic negative feedback loop with uncertain measurements

... In the context of gene regulatory networks, a negative feedback loop is modeled by N -coupled ordinary differential equations. The resulting system is highly non-linear due to the use of smooth Hill ...

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Caspase-2-Mediated Cleavage of Mdm2 Creates a p53-Induced Positive Feedback Loop

Caspase-2-Mediated Cleavage of Mdm2 Creates a p53-Induced Positive Feedback Loop

... SUMMARY Caspase-2 is an evolutionarily conserved caspase, yet its biological function and cleavage targets are poorly understood. Caspase-2 is activated by the p53 target gene product PIDD (also known as LRDD) in a ...

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The H19/let-7 double-negative feedback loop contributes to glucose metabolism in muscle cells

The H19/let-7 double-negative feedback loop contributes to glucose metabolism in muscle cells

... Our finding that let-7 targets H19 for destabilization in response to extracellular cues establishes the first example of miRNAs regulating their own sponges as a part of a reg- ulatory feedback loop. This ...

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Modeling and Design of High Bandwidth Feedback Loop for dv/dt Control in CMOS AGD for GaN

Modeling and Design of High Bandwidth Feedback Loop for dv/dt Control in CMOS AGD for GaN

... voltage of the feedback-loop starts to change in less than 1ns just after the GaN transistor v DS falling-edge. Fig. 9. Experimental waveforms of the propsed system showing an open-loop response with ...

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Global asymptotic stability of a genetic negative feedback loop with an affine control

Global asymptotic stability of a genetic negative feedback loop with an affine control

... In this context, this paper presents a N-dimensional com- petitive dynamical model for a genetic negative feedback loop that displays dyshomeostasis, leading to the emergence of undesired oscillations. This ...

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Feedback loop and upwind-propagating waves in ideally expanded supersonic impinging round jets

Feedback loop and upwind-propagating waves in ideally expanded supersonic impinging round jets

... Feedback loop in supersonic impinging round jets An additional indirect evidence of the role of the neutral acoustic wave modes in the upstream part of feedback loop is provided by the a[r] ...

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Chronic activation in presymptomatic amyotrophic lateral sclerosis (ALS) mice of a feedback loop involving Fas, Daxx, and FasL.

Chronic activation in presymptomatic amyotrophic lateral sclerosis (ALS) mice of a feedback loop involving Fas, Daxx, and FasL.

... remained possible that NO from the exogenous donor was provided at levels in excess of those generated by the Fas 兾NO pathway, and thereby led to nonphysiological activation of Fas. We therefore looked for evidence of ...

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Cross-Cohort Analysis Identifies a TEAD4–MYCN Positive Feedback Loop as the Core Regulatory Element of High-Risk Neuroblastoma

Cross-Cohort Analysis Identifies a TEAD4–MYCN Positive Feedback Loop as the Core Regulatory Element of High-Risk Neuroblastoma

... Abstract High-risk neuroblastomas show a paucity of recurrent somatic mutations at diagnosis. As a result, the molecular basis for this aggressive phenotype remains elusive. Recent progress in regulatory network ...

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Periodic solutions of piecewise affine gene network models: the case of a negative feedback loop

Periodic solutions of piecewise affine gene network models: the case of a negative feedback loop

... Unité de recherche INRIA Sophia Antipolis 2004, route des Lucioles - BP 93 - 06902 Sophia Antipolis Cedex France Unité de recherche INRIA Futurs : Parc Club Orsay Université - ZAC des Vi[r] ...

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A SUMO-dependent feedback loop senses and controls the biogenesis of nuclear pore subunits

A SUMO-dependent feedback loop senses and controls the biogenesis of nuclear pore subunits

... Strikingly, mutations or physiological perturbations altering pore integrity decrease the levels of the NPC-associated SUMO protease Ulp1, and trigger the accumulation of sumoylated vers[r] ...

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An analysis of the developer-user feedback loop in "The Edge"

An analysis of the developer-user feedback loop in "The Edge"

... The actual data collected by the Edge client is defined to help the server perform the analysis to predict user behavior and give insight to developers on how t[r] ...

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Feedback Control as MAPE-K loop in Autonomic Computing

Feedback Control as MAPE-K loop in Autonomic Computing

... of feedback loop to take this into ...this feedback loop is considered as a case of control loop where techniques stemming from Control Theory can be used to design efficient safe, and ...

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Le feedback en classe de langue : et si on inversait les rôles ? L'impact du feedback apprenant sur l'agir professoral

Le feedback en classe de langue : et si on inversait les rôles ? L'impact du feedback apprenant sur l'agir professoral

... Le premier élément qui ressort de ces entretiens est finalement le dernier évoqué, à savoir, le facteur culturel. Nous l'avions dit en introduction, le silence ainsi que l'absence d'autres vecteurs de communication ...

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Rdh54/Tid1 Inhibits Rad51-Rad54-Mediated D-loop Formation and Limits D-loop Length

Rdh54/Tid1 Inhibits Rad51-Rad54-Mediated D-loop Formation and Limits D-loop Length

... Figure 6: Tid1 affects kinetics of D-loop extension and cell survival depending on the length of homology between the donor and MAT during mating type switch (A) Schematic of the primer extension assay adopted ...

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Tractography of meyer's loop asymmetries

Tractography of meyer's loop asymmetries

... Accepted Manuscript ABSTRACT Purpose: The purpose of the current study was to use diffusion tensor imaging (DTI) to conduct tractography of the optic radiations (OR) and its component bundles and to assess both the ...

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Communication utilizing feedback channels.

Communication utilizing feedback channels.

... For example, a system operating over a white noise channel has an untimate error-free information rate attainable given by channel capacity; however, systems which signal at rates [r] ...

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Determinantal formulae and loop equations

Determinantal formulae and loop equations

... satisfy loop equations, implies by recursion, that each W n (g) is an algebraic function, with possible branchcut singularities at the odd zeroes, and poles at the even ...

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Automatic Verification of Loop Invariants

Automatic Verification of Loop Invariants

... candidate loop invariants need some kind of decision procedure to ensure the candi- dates are indeed ...the loop body code: a decision procedure is then needed to verify that the written code meets the ...

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Loop equations from differential systems

Loop equations from differential systems

... prove loop equations in an algebraic manner in a totally general ...having loop equations, is that, if our differential system satisfies further nice properties (called “topological type”, see section ...

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