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 42 for “"Emulators"”.
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Deep Learning Emulators for Accessible Climate Projections
Climate change has shifted from a purely scientific topic to a deeply politicized issue. To combat climate change we need to create mutual understanding on the links between policies, global warming, and city-scale impacts. Climate models have been incredibly helpful in generating this causal …
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Biomimetic emulators of high potential peroxygenases: Implications in bioremediation and metabolic studies
Nowadays, classical (bio)remediation processes are affected by some economical and environmental drawbacks. These approaches often seem to be inadequate, particularly in the perspective of sustainable green processes. Since immobilized metalloporphines can emulate the active site of peroxidases and …
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On Uncertainty Quantification for Systems of Computer Models
… the possibility of using independent GaSP emulators of computer models for fast construction of emulators of systems of computer models. The resulting approximation to a system of computer models is called the linked emulator. The third chapter discusses the irrelevance of attempting to …
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Reconfigurable Hardware-Based Simulation Modeling of Flexible Manufacturing Systems
… desktop FMS. It is composed of several micro-emulators, which are capable of mimicking operations of equipment in FMS, such as machine centers, transporters, and load/unload stations. To design possible architectures for the simulator, a mapping technology is applied using the physical layout …
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Scattering and Optimization Methods for Radar and Millimeter Wave Applications
… High performance computing based EM emulators are used to simulate real-time complex EM wave interactions between multiple radar targets, transmitters, and receivers. The RCS of the radar targets are required to be stored as a table; however, the needed storage size increases …
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Design and implementation of a digital real-time secondary surveillance radar/identification friend or foe target emulator
… There is thus a need for specialized target emulators to be developed and used as laboratory test equipment. This thesis describes the design and implementation of a transistor-transistorlogic (TTL) real-time SSRlIFF target emulator.
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Numerical modeling, uncertainty analyses, and machine learning for decision support in the geosciences.
… phenomena in subsurface porous media. The 20 ML emulators included linear methods, Bayesian methods, ensemble learning methods, and a multilayer perceptron (MLP). The ML emulators were trained to classify the state of mixing and predict three quantities of interest (QoIs) characterizing species …
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Validating Gaussian Process Models in Computer Experiments
… Gaussian process models: Gaussian process emulators and simulator discrepancy models. A Gaussian process emulator is a representation of our beliefs about a mathematical model implemented in a computer program known as a simulator. By ``simulator discrepancy'', we mean the difference …
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Machine Learning for Computational Optimization
… (1) developing novel machine learning-based emulators that enhance computational efficiency while maintaining solution quality, and (2) creating adaptive computational reasoning models that optimize resource allocation across different approximation fidelities. In ice-sheet modeling—our …
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Robust design methodologies: application to compressor blades
… of Experiment techniques and Gaussian Process emulators are employed to develop efficient surrogate models for uncertainty analysis and exploring the design space.<br/>Efficient multiobjective optimization based robust design methodologies are presented. The robust design methods in conjunction …
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Transparent and Precise Malware Analysis Using Virtualization: From Theory to Practice
… into emulation and hardware virtualization. Emulators have the advantages of <em>flexibility of analysis tool development</em> and <em>efficiency for fine-grained analysis</em>; however, emulators suffer from the <em>transparency</em> problem. That is, malware can employ methods to determine …
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Using derivative information in the statistical analysis of computer models
… which have shorter correlation lengths and emulators without derivatives generally tend to require twice as many model runs as the emulators with derivatives to produce a similar predictive performance. We conclude that an optimal solution is likely to be a hybrid design consisting of …
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Adaptive neural network control of discrete-time nonlinear systems
… and multi layer neural networks are used as the emulators for the desired feedback controls. State feedback, output feedback, backstepping design are used respectively in developing the stable adaptive controls. By using Lyapunov method, semi globally uniformly ultimate boundedness stability is …
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Doppler channel emulation of high-bandwidth signals
… bandwidth capabilities than commercial channel emulators and the creation of a flexible framework for future implementation of more complex channel models. Following construction of the emulator's framework, a module capable of applying Doppler shifting to the input signal was created and tested …
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Emulation framework for testing higher level control methodology
… control programs. These representations or "emulators" mimic the behavior of the system, or factory being controlled. The advantages of such a scheme are that developers of control software, are able to test out new control methodologies without actually connecting to the hardware system …
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Classical and Quantum Computational Methods for Predicting Fluid Transport in Fracture Networks
… to replace costly solvers with parsimonious emulators. In combination with multi-fidelity and quantum techniques, they make physics-informed modeling computationally feasible. One of our studies involves the use of Gaussian process regression to generate Bayesian predictions for gas transport …
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New Security Paradigms for Spacecraft and Networks: Metrics, Testbeds, and Scalable Solutions
… made to several open-source network emulators, enhancing their utility for future space networking research.
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Gaussian Process Emulation: Theory and Application to Coupled Physics
… space and time. We develop Gaussian process (GP) emulators as fast surrogates of computationally expensive coupled computer models for uncertainty estimation. A GP can be thought of as an interpolator for a limited number of computer runs of a physics simulator. The predictive mean of the GP is …
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CALIFORNIA STATE UNIVERSITY SAN BERNARDINO WiN GPS
… software development kits, and mobile device emulators were analysed and compared.</p> <p>Once the tools were selected. It was necessary to study, to become familiar with and to learn how to use them. Finally an application is developed and its main functions/code will be explained. This …
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LARGE SCALE NETWORK PROTOCOL EMULATION ON COMMODITY CLOUD
… in higher fidelity than simulations. Most emulators allow execution of code in the platform or environment similar to the target platform on which the protocol will be deployed. This advantage comes at a cost. Emulation often requires much larger IO or computational resources than …
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