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 133 for “"Physical constraints"”.
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Informed Planning and Safe Distributed Replanning under Physical Constraints
… arise by the presence of both dynamic motion constraints and time limitations. The thesis proposes the framework of Short-Term Safety Replanning (STSR), which achieves safety guarantees in this context while minimizing computational overhead. The final contribution corresponds to an …
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Physical constraints on phytoplankton in estuaries and shallow coastal waters
… Doppler current profilers (ADCP) and CTDs, the physical mixing processes within the estuary were determined and combined with high resolution phytoplankton species data to assess the physical pressures on the microalgal community. Initial surveys were conducted to provide snapshots of the …
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The role of stochastic resonance and physical constraints in the evolution of foraging strategy
… maximize foraging efficiency, regardless of the physical constraints imposed in the models. The results are presented as an example of natural stochastic resonance, in which some function of noise (in this case, the variability in parameter choices), when adapted to a biological process (e.g., …
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Physics-based machine learning and data-driven reduced-order modeling
… also be able to make predictions that enforce physical constraints. Achieving these tasks is particularly challenging for the case of systems governed by partial differential equations, where generating data (either from high-fidelity simulations or from physical experiments) is expensive. We …
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Positivity preserving solutions of partial integro-differential equations
… non-local phenomena, multi-dimensionality, and physical constraints. All of these issues ultimately determine the accuracy and solution time for a given problem. Typical solution techniques are designed to handle every system using the same methods. And often the physical constraints of the …
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Reversibility for efficient computing
… However, traditional models ignore important physical constraints on information processing. This thesis gives the first analysis demonstrating that in a realistic model of computation that accounts for thermodynamic issues, as well as other physical constraints, the judicious use of …
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Asymmetric flow measurement in space constrained cooling water ducts using a traversing probe
… a local flow measuring technique as a result of physical constraints on site. In addition, the flow profile in the CW ducts was unknown so that existing flow rate measurement standards could not be applied. Thus the focus of this research was to predict the expected accuracy of local flow …
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Experiments for the Control and Localization of Robots using Magnetic Induction
… a study on its design and implementation despite physical constraints.
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Inference of electromagnetic system behavior in the presence of variability
… procedure, enabling the enforcement of certain physical constraints, making the modeling procedure more flexible by accepting additional data to capture dependency, and taking advantage of universal statistics to reduce the sample requirement. Specifically, for the first time, a variational …
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Shape memory ceramics in small volumes
… applications. This is due to the inherent physical constraints of the grains that create stress concentrations and eventually leads to intergranular fracture. Here it is proposed that single crystalline and oligocrystalline ceramics-made with a single grain or very few grains-will avoid the …
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Constraint-aware distributed robotic assembly and disassembly
… of assembly or disassembly tasks while taking physical constraints into consideration. We then extend these algorithms to a variety of real-world situations, including when component parts are unavailable or when the time requirements of assembly tasks are non-uniform. We demonstrate the …
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Coarse-grained models for prediction, uncertainty quantification, and extreme event statistics of turbulent flows in engineering and geophysical settings using physics-consistent data-driven closures
… fluid flows found in engineering and geophysical settings. The generic form of the systems we study includes a linear operator, external forcing and a bi-linear, energy-preserving operator. We use the predictions of neural networks to integrate over a coarse grid the evolution of …
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Analysis and traction control of a rocker-bogie planetary rover
… the system is detailed. It considers realistic physical constraints such as wheel slip and actuator saturation. A computer simulation with a graphic interface is developed to evaluate performance and enhance the understanding of the system. The analysis leads to the design of a fuzzy logic …
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Physics-guided Machine Learning for Condition Assessment of Building Structures in Operational Environments
… machine learning methods further embed physical constraints into machine learning models to improve interpretability and reliability. The Parallel Neural Ordinary Differential Equations (PNODEs) framework integrates state-space equations to provide physical constraints, enabling accurate …
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Strategic dynamic vehicle routing with spatio-temporal dependent demands
… the space by an agent with selfish interests and physical constraints. In particular, we focus on the following problem: a team of vehicles seek to device dynamic routing policies that minimize the average waiting time of a typical demand, from the moment it is placed in the space until its …
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An analysis of alternative methods for loading provisions aboard AOEs 1 and 2
… to be infeasible because of the dimensions and physical constraints of the AOE hull. Comparison measures of effectiveness include total elapsed loading time, loading cost per measurement ton of cargo and qualitative considerations. In conclusion, recommendations for modification of the AOEs 1 …
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BEAM COMBINING OF FIBER LASERS AND VERTICAL EXTERNAL CAVITY SURFACE EMITTING LASERS USING VOLUME BRAGG GRATINGS
… enabled wide range of applications. However, physical constraints such as material heating and nonlinear effects limit the maximum achievable power of these laser sources. In order to obtain higher power level, beam combining techniques such as coherent beam combining and spectral beam …
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Functionalism and Strange Minds
… arguement with a special attention made to the physical constraints on what constitutes a sufficient realizer, the difficulties in multiple realizability, and the interpretation therein. This paper firstly demonstrates the functionalist arguement, its precedents, and the work of hillary putnam, …
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Tangible interfaces for manipulating aggregates of digital information
This thesis develops new approaches for people to physically represent and interact with aggregates of digital information. These support the concept of Tangible User Interfaces (TUIs), a genre of human-computer interaction that uses spatially reconfigurable physical objects as representations and …
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Programs and precedents : future prospects of housing theory and practice in Lebanon
… that of Greater Beirut, Lebanon, a site of rapid physical and social urbanization that is literally devouring the small country. The second is to broaden the range of housing options in that context, ones that have not yet been considered, possibly for political, institutional, economic, and/or …
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