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 20 for “"floating body"”.
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Shape optimization of a floating body
… we consider a variational formulation of a floating body in a perfect fluid. In particular, we study the case of a stationary two-dimensional potential flow and thus we are able to replace the velocity potential by its harmonic conjugate which is called the stream function. Compared to the …
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A variational formulation of a floating body
… we consider a two-dimensional motion with a floating body from a variational point of view. We consider an irrotational flow of an inviscid, homogeneous and incompressible liquid of finite depth acted on by gravity and surface tension. We look for 2R-periodic waves which propagate steadily …
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Device design and process technology for sub-100 nm SOI MOSFET's
… PDSOI MOSFET's are difficult to design due to floating-body effects. FD-SOI MOSFET's are easier to design and are more scalable than PD-SOI MOSFET's. However, in the sub- 100 nm gate length regime, fully-depleted SOI MOSFET's are difficult to manufacture because a bottom gate is required for …
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Trade-offs between performance and reliability of sub 100-nm RF-CMOS technologies
… source/drain metal contact spacing, and d) floating-body/body-contact. The major contributions from this research are summarized as follows: 1) Role of floating-body effects on the performance and reliability of sub 100-nm CMOS-on-SOI technologies is investigated for the first time [1], [2]. …
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Analysis and design of an in-pipe system for water leak detection
… This thesis is on the analysis and design of a floating mobile sensor for leak detection in water distribution pipes. This work covers the study of two modules, namely a "floating body" along with its "sensing module". The Mobility Module or the floating body was carefully studied and designed …
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A high-speed, low-power analog-to-digital converter in fully depleted silicon-on-insulator technology
… by leveraging these advantages. However, the floating-body effect can create significant problems in analog circuits, leading to potential circuit malfunction. A single-ended auto-zeroed comparator topology is optimized to leverage the advantages of fully depleted SOI technology and avoid the …
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WEAKLY NONLINEAR DYNAMIC ANALYSIS OF FLOATING BODIES IN WAVES
Weakly nonlinear dynamic responses of rectangular floating bodies are studied in this work. This study is based on a modified linear wave theory that gives a reasonable Froude-Krylov pressure distribution near the free surface. The idea of strip theory is then adopted to evaluate the Froude-Krylov …
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The dynamics of floating bodies in a regular wave environment
… Theory problem of the interaction between a floating body and a train of regular waves in a two-dimensional domain. In particular, a numerical study has been carried out of the indirect method of solution of the integral equation resulting from a distribution of Green's Function sources over …
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Modeling, Simulation and Design of EOS/ESD Protection Devices and Circuits in Silicon-on-Insulator Technology
… for SOI circuits is discussed. Modeling the floating body effects in SOI MOSFETs and their effect on the device operation in the snapback mode is also discussed. The implementation of the parasitic BJT in the SOI MOSFET model is different from previously published models. Device simulation …
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Numerical models of Hall thruster ionization oscillations
… to determine the effects of macro-particle size, floating body potential, electron injection region, ion time step size, grid refinement, heavy particle mass reduction, and an artificial permittivity factor. These studies help to determine the parameters that will produce accurate simulations in …
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Numerical simulation of nonlinear response of moored floating structures to steep waves
… (QALE-FEM) for numerically simulating wave-body interaction problems based on the fully nonlinear potential theory. The boundary value problem in this model is solved by a finite element method (FEM). The main difference between this method and the conventional FEM is that the complex mesh …
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A higher-order method for large-amplitude simulations of bodies in waves
… is adopted in which the representation of the body surface is separated from the discretization of the hydrodynamic solution. Traditional formulations of the wave-body problem assume small-amplitude waves and body motions, and perturbation expansion about the mean position of the body and free …
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Real-time Forecasting and Control for Oscillating Wave Energy Devices
… fundamental properties of the radiation of the floating body and the prediction horizon required for an eff�ective implementation of complex-conjugate control is identi�fied. An extensive investigation of the problem of wave elevation and wave excitation force forecasting is then presented. The …
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Boat-shaped Buoy Optimization of an Ocean Wave Energy Converter Using Neural Networks and Genetic Algorithms
… to power the blue economy. The shape of the floating body, or buoy, of the point absorber type WEC is important for the wave energy capture ratio and for the current drag force. In this work, a new approach to optimize the shape of the point absorber buoy is developed to reduce the ocean …
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A study of silicon and germanium junctionless transistors
… IM devices are compared. It is observed that the floating body in JNT is relatively dynamic comparing with that in IM devices and proper design of the device structure may further reduce the VD for a sub- 60 mV/dec subthreshold slope. Diode configuration of the JNT has also been evaluated, which …
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A nonlinear wave load model for extreme and fatigue responses of offshore floating wind turbines
… sources of alternative energy and offshore floating wind turbines are considered viable and economical means of harnessing ocean energy. The accurate prediction of nonlinear hydrodynamic wave loads and the resulting nonlinear motion and tether tension is of crucial importance in the design …
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Wave loads on offshore wind turbines
… sources of alternative energy and offshore floating wind turbines are considered viable and economical means of harnessing ocean energy. The accurate prediction of nonlinear hydrodynamic wave loads and the resulting nonlinear motion and tether tension is of crucial importance in the design …
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Polycrystalline Silicon TFTs for Large Area Electronic Application
… characteristics, impact of hydrogenation, the floating body effect and the structural sensitive hydrogenation effect have been investigated. High voltage TFTs And their primary applications in large area electronics and flat panel displays in particular. A steady demand for a wider viewing …
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A hydrodynamic analysis of deep-water moorings
… which is representative of a Spar platform and a floating offshore wind turbine (FOWT). Emphasis is placed on the coupling effects between the floating body and mooring line and the nonlinear dynamic response of elastic mooring line. For a Spar platform, this thesis studied the behaviour of a …
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Reflection
… a meditator achieve a connection between the body and the soul.