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.
Results
Showing 1 to 20 of 232 for “"feedback loops"”.
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High power laser diode driver with plural feedback loops
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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The Mechanisms And Roles Of Feedback Loops For Visual Processing
Signal flow in the brain is not unidirectional; feedback represents a key element in neural signal processing. To address the question on how do neural feedback loops work in terms of synapses, microcircuitry, and systems dynamics, we developed a chick midbrain slice preparation to study and …
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Exploring Lean-Agile Adoption in Publishing: MVBs, Porous Books and Feedback Loops
… in the sense of the intentional, proactive feedback-driven process improvement approach that has more recently been synonymous with software engineering and interaction design in recent decades but which predates it, or other senses merely reflecting the general adjective or common noun …
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BReach-LP: a Framework for Backward Reachability Analysis of Neural Feedback Loops
… we move toward real-world deployment of neural feedback loops (NFLs), i.e., closed-loop systems containing NNs, it is critical that we develop methods to verify that these systems are safe. Previous works have developed forward reachability techniques to verify safety for NFLs, but these …
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How bacteria tune mixed positive/negative feedback loops to generate diverse gene expression dynamics
… 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 observed …
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Feedback Loops of Influence: An Agent-Based Simulation of Media-Voter Dynamics and Political Polarization
<p>Democracy thrives on compromise. However, in recent years, growing political polarization in many countries increasingly hinders political cooperation and fuels conflict among citizens. This research proposes an agent-based theoretical framework demonstrating how the dynamic interaction between …
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Feedback loops in educational environments using web-based survey tools : new technology development and three implementation case studies
… from the development of an on-line, web-based feedback system and preliminary analysis of the socio-technical interactions associated with the specification, design and use of this system. The system has been designed to facilitate many forms of feedback in educational environments. Novel …
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The Use of Organizational Learning Feedback Loops in the Practice of Planning: Citizen Participation and Virginia's Urban Development Area Comprehensive Plan Requirement
From 2007 to 2011, select Virginia localities were legislatively mandated to update their respective comprehensive plans to include Urban Development Areas. The completion of the Urban Development Area comprehensive plan requirement was complicated by uneven application and codification of the …
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Physics based supervised and unsupervised learning of graph structure
… (1) Brownian motion, (2) Gauss's law, (3) feedback loops, and (3) neural synapses, to discover patterns in graphs.
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Forest fire management in Portugal : developing system insights through models of social and physical dynamics
… System Dynamics, to explore how self-regulating feedback loops affect the outcomes of forest fire management decisions over time. Two models are developed. The strategic model explores the dynamic between suppression and prevention expenditure and its effect on long-term burned area. The …
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Negative feedback regulation as a means to constrain the oncogenic potential of mutant Egfr in NSCLC
… 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 converge on …
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Synthesis of neuromorphic circuits with neuromodulatory properties
… can be broken down into four essential feedback loops, and we introduce a simplified model of the neural membrane respecting this fundamental structure. We present a novel methodology for controlling the neuron's behaviour through the shaping of its I-V curves in distinct timescales, …
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Endogenous control of stochastic gene expression in the development of Caenorhabditis elegans
… leading to the discovery of multiple novel feedback loops within the Wnt pathway. Applying computational network inference, I revealed a network of interlocking positive and negative feedback loops, which I subsequently show to have a topological advantage in dampening stochastic noise in …
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User Engagement Dynamics: The Impact of Platform Design and Generative AI
… how specific design choices influence feedback loops, cognitive load, and content discovery has become critical for designing sustainable digital ecosystems. Through three empirical studies using large-scale behavioral data, this dissertation examines the consequences of two distinct …
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Agent-based Modelling and Social Theory Reveal How People Change Their Yards in Response to Wildlife
… between people and wildlife could form feedbacks with long-term consequences for biodiversity, but the way that wildlife presence in residential gardens affects people’s management ecisions remains largely unexplored. To understand how these relationships shape yard management decisions …
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Network Inference Using Independence Criteria
… we propose a novel method to infer networks with feedback loops. We use an MCMC sampler, which samples using a loss function based on an independence criterion. This allows us to find networks under very general assumptions, such as non-linear relationships, non-Gaussian noise distributions and …
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Interaction of lifecycle properties in High Speed Rail systems operation
… Shinkansen, three "ilities" form a positive feedback loop to make HSR operation successful. The NEC shows high profitability, but it does not perform as well in terms of safety and availability due to several systemic factors. System Dynamics (SD) is applied to visualize interactions of …
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Modeling the resource consumption of Housing in New Orleans using System Dynamics
… are proposed based on the interactions of feedback loops identified.
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Using Fuzzy Cognitive Maps to Engage Stakeholders in the Search for Solutions to Emerging Environmental Challenges
… perspectives, and (3) their dynamics - e.g., are feedback loops between environmental outcomes and management actions present in stakeholder FCMs and, if so, what might they imply for managing the SES? My results suggest that FCMs can reveal barriers and opportunities for collective salt …
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