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 28 for “"General Control"”.
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Domain-general control mechanisms underlying stopping of thought and action
… interactions that achieve proactive and reactive control, b) stopping actions and thoughts engages co-localized activity c) the right dorsolateral prefrontal cortex(DLPFC) and the right ventrolateral prefrontal cortex(VLPFC), dynamically inhibit different target regions depending on whether memory …
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Learning to Adapt Cognitive Control Across Paradigms: Evidence for Domain-General Control Strategies
… depends on how we learn to adapt cognitive control: Usually, we focus and redirect our behavior towards our objectives when facing a particularly challenging task or when irrelevant information activates a response that conflicts with our goals, while we relax and let events guide us when …
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Predictions in a dynamic world: the adaptive role of the Active Prediction Network
… network incorporating both semantic and domain-general control regions: the Active Prediction Network (APN). This distinctive topographical overlap suggests that the mechanism for active prediction repurposes the neural machinery typically involved in flexible semantic retrieval, applying it …
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Active Control of Structures Using Genetic Algorithms
… major design aspects: a genetic algorithm-based control parameter optimization based on the real design criteria, a state space reconstruction technique for estimating the full state of a structure using accelerations measured from sensors installed on the structure, and the robustness of …
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The response of eIF2α kinases to plant virus infection
… (eIF2α) is phosphorylated in several eukaryotes, general mRNA translation is inhibited, but some mRNA species that contain an upstream open reading frame (uORF) are preferentially translated. In plants, two types of eIF2α kinases have been reported - general control non-derepressible-2 kinase …
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Adaptive dead-time compensation
In this work a new paradigm for designing controllers for poorly modeled plants with significant dead time is proposed. We show how minimum variance control can be interpreted as dead-time compensation with infinite gain proportional feedback. Based on this interpretation, we develop more general …
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Stochastic Model Predictive Control via Fixed Structure Policies
<p>In this work, the model predictive control problem is extended to include not only open-loop control sequences but also state-feedback control laws by directly optimizing parameters of a control policy. Additionally, continuous cost functions are developed to allow training of the control policy …
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The financing of public junior colleges in Texas
… was the cost per student semester-credit hour of general control, instruction, and current educational expenditure for the public junior colleges included in this investigation? 4. What was the cost of education in the public junior colleges of Texas compared with junior college costs as revealed …
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The Integration of Explanation-Based Learning and Fuzzy Control in the Context of Software Assurance as Applied to Modular Avionics
… this architecture. Namely, the adaptation of control laws to changing hardware. This work proposes some approaches to address this issue. Control laws may require adaptation to overcome hardware degradation, or system upgrades. There is also a growing interest in the ability to change hardware …
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Model-based control of spatially extended systems
We extend a new method of control, model-based control, to the realm of partial differential equations. The hallmark of model-based control is that a particular goal dynamics is achieved by using a model for the observed dynamics to create the appropriate driving needed to make the goal dynamics an …
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The effect of alternative splicing on key regulators of the integrated stress response
The protein kinase General control non-derepressible-2 (GCN2) is a key regulator of the Integrated stress response that responds to various stress signals, including nutritional deprivation. As a result of high levels of uncharged tRNAs during amino acid depletion, GCN2 phosphorylates serine-51 of …
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A control-theoretic approach to dynamic optimization of metabolic networks
The characterization of general control principles that underpin metabolic dynamics is an important part of systems analysis in biology. It has been long argued that many biological regulatory mechanisms have evolved so as to optimize cellular adaptation in response to external stimuli. In this …
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Regulation of the GCV3 gene in Saccharomyces cerevisiae
… research was to study the regulatory mechanisms controlling GCS activity. The expression of GCV3 , a yeast gene that codes for one of the four GCS subunits, was analyzed in detail. This revealed that GCV3 expression is regulated by the availability of glycine, and cellular demand for the …
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Geometric algorithms for input constrained systems with application to flight control.
… developed to solve some problems of analysis and control design for unstable linear dynamical systems having their input constrained by maximum amplitude and rate of the control signals. Although the results obtained are of a general nature, all the problems considered are induced by flight …
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Issues in on-line optimisation
In general, on-line optimisation can be defined as the on-line process of finding the optimum set-points of the system. Several areas might be concerned in this procedure. This thesis evaluates algorithms for on-line Optimisation. Techniques for steady-state detection, static data reconciliation, …
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Development of a core design optimization tool and analysis in support of the planned LEU conversion of the MIT Research Reactor (MITR-II)
… employed. Relationships between burnup, critical control blade position, core Um mass, and power distribution are used to predict fuel element U²³⁵ depletion, critical control blade motion, and power peaking. The tool applies the correlations to identify an optimal loading pattern, defined as the …
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The relationships among ideational fluency, self-reports of creativity, intrinsic versus extrinsic motivation, and perceived parenting style in gifted and nongifted adolescents
… related to maternal negative affect and general control in the preschool and primary years. IQ was negatively related to maternal deprivation of privileges in the nongifted. For the nongifted, IEOS scores were negatively related to maternal control through reward in the preschool and …
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Essential Amino Acid (EAA) Regulation of Skeletal Muscle Protein Turnover with Age
… receiving one of the following treatments: control (CON), 0.2 x EAA, 1.0 x EAA, 3.0 x EAA with or without rapamycin (100 nm; rapamycin (RAP) for 1, 6, and 24 hours. All treatments were performed in triplicate and then each experiment was repeated three times, yielding nine wells per …
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A thesis on the application of neural network computing to the constrained flight control allocation problem
… a neural network to solve the constrained flight control allocation problem is investigated for the purposes of developing guidelines for the selection of a neural network structure as a function of the control allocation problem parameters. The control allocation problem of finding the …
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Primary structure and expression studies of the dihydrofolate reductase gene (DFRI) of Saccharomyces cerevisiae
… elements (TGACTC) required for tIle amino acid general control response, and "TATA H boxes as well as several consensus sequences thought to be required for transcriptional termination and polyadenylation. Analysis of the codon usage of the yeast DFRl coding region revealed a codon bias index of …
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