Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 291 for “"negative feedback"”.
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Goal Orientation and Responses to Negative Feedback
… (GO) on responses to and attitudes toward negative feedback were examined. Seventy college students from a Midwest university were provided negative normative feedback regarding their performance on a Boggle® word finding task. Half of the participants received normative feedback only, …
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Mathematical modelling of negative feedback signal transduction processes
… this thesis we present mathematical models for negative feedback signal transduction processes. Signal transduction pathways are often equipped with negative feedbacks. Negative feedback loops are important components that exhibit oscillations in concentrations of the substances involved, both …
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The realisation of band-pass amplifier by utilising negative feedback principle
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1939.
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Dynamic Characterization of the IKK:κBα:NFκB Negative Feedback Loop Using Real-Time Bioluminescence Imaging
… canonical NF-κB signaling is the IKK:NF-κB: IκBα negative feedback loop that plays a major role in regulating the strength and duration of NF-κB transcriptional activity. We have developed and characterized an unique bioluminescent reporter (κB<sub>5</sub><sub>à</sub>IκBα-FLuc) that recapitulates …
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Tumor Suppressor APC and Musashi1: Double-Negative Feedback, Wnt Signaling and Colon Cancer
… epithelium. I have identified a double-negative feedback loop between APC and a sequence specific RNA binding protein, Mushashi-1 (MSI1). I hypothesize that this feedback loop serves to maintain a critical balance and that disruption of this balance leads to loss of homeostasis and …
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Theory and applications of delta-sigma analogue-to-digital converters without negative feedback
… In conventional oversampled modulators, negative feedback is applied in order to control the dynamic behavior of a system and to realize the attenuation of the quantization noise in the signal band due to noise shaping. However, feedback can also introduce undesirable effects such as …
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How bacteria tune mixed positive/negative feedback loops to generate diverse gene expression dynamics
… generate their response through a mixed positive/negative feedback loop (a common alternative sigma factor circuit motif). We use this fact to build a general sigma factor model. In it, we predict a range of behaviours that these circuits should be capable of producing, including both previously …
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Mitigating the effects of ribosome limitations on synthetic circuits via high-gain sRNA-mediated negative feedback
… of resource limitations by adding a high-gain negative feedback loop to one of the circuits. The loop includes an sRNA construct. We explore different implementations of this circuit and model them mechanistically. Furthermore, we begin physically implementing one of the circuit designs by …
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Negative feedback regulation as a means to constrain the oncogenic potential of mutant Egfr in NSCLC
… respond to an oncogenic lesion by upregulating negative feedback pathways to counteract the induction of aberrant signaling, and disabling these feedback mechanisms may be an essential component of the progression of EGFR mutant tumors. A multitude of positive and negative feedback loops …
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The Saccharomyces cerevisiae phosphatidylinositol/phosphatidylcholine transfer protein functions as a negative feedback regulator of the CDP-choline pathway
… (CCTase). The SEC14p is shown to act as a negative regulator of the CDP-choline pathway through the ligand-modulated SEC14p dependent inhibition of CCTase. PC bound SEC14p is identified as likely the active agent in the inhibition of CCTase. SEC14p is further shown to be conserved …
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Soften the pain, increase the gain: Interventions that mitigate the influences of negative feedback and improve online feedback exchange
This Dissertation was approved for publication on 2020-12-02 at 14:57.
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Familiarity with task and its effect on the way children negotiate for meaning, and provide and use implicit negative feedback
… for meaning, and provide and use implicit negative feedback to each other. The focus of this research is the interactions that occur between pairs of young primary school children between the ages of 7.0 to 8.6 years. Two studies were carried out. The first study investigated the effect of …
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A four-cysteine zinc finger in carboxyltransferase structurally links the functions of enzymatic activity and negative feedback regulation of translation
Acetyl-CoA carboxylase is the first and committed step of de novo fatty acid synthesis in all organisms. In Escherichia coli, the enzyme is expressed as separate proteins for the three functional components: a biotin carboxylase, a biotin carboxyl carrier protein, and a carboxyltransferase. The …
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The emergence of a negative feedback bias as a product of supervisor and subordinate dynamics: consequences of opportunity-based supervision and performance variation
Because the act of supervisory feedback can critically affect a subordinate's performance, it is imperative to explicate the various conditions in which the character of feedback is determined. The purpose of the following research was to model the conditions under which supervisors adopt a …
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Acipimox during Short-Term Exercise Exerts A Negative Feedback of Growth Hormone on Ghrelin Secretion in Patients with Bulimia Nervosa and in Healthy Women: The Role of Lipolysis
Název: Perorální podání acipimoxu během fyzické zátěže způsobuje negativní zpětnovazebný mechanismus růstového hormonu na sekreci ghrelinu u pacientek s mentální bulimií a zdravých žen: Úloha lipolýzy Úvod: Poruchy příjmu potravy, ke kterým patří mentální bulimie (MB) a mentální anorexie, jsou …
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Memory for performance feedback: a test of three self- motivation theories
… theories to predict recall of performance feedback, memory sensitivity, and ratings of perceived accuracy. Self-enhancement (Jones, 1973) predicts individuals are motivated to maintain their self-esteem. Individuals will therefore recall positive relative to negative feedback and will rate …
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ΜΕΛΕΤΗ ΣΥΜΜΕΤΟΧΗΣ ΤΩΝ ΝΤΟΠΑΜΙΝΕΡΓΙΚΩΝ ΝΕΥΡΩΝΩΝ ΣΤΗΝ ΑΡΝΗΤΙΚΗ ΠΑΛΙΝΔΡΟΜΗ ΡΥΘΜΙΣΗ ΤΩΝ ΓΟΝΑΔΟΤΡΟΦΙΝΩΝ ΜΕ ΟΙΣΤΡΟΓΟΝΑ
THE NEGATIVE FEEDBACK CONTROL OF OESTROGEN TO GONADOTROPIN SECRETION AND THE POSSIBILITY OF THE ACTIVATION OF DOPAMINERGIC NEURONS FOR ELICITING THIS OESTROGEN EFFECT HAS BEEN STUDIED IN 23 MENOPAUSE WOMEN. THE ADMINISTRATION OF OESTRADIOL BENZOATE (1 MGR I.M) RESULTED IN AN INITIAL DECLINE AT LH …
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