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 936 for “"Multilevel"”.
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Multilevel Parallel Communications
… can be used to achieve high reliability as well. Multilevel parallelism is flexible since the degree of parallelism provided at any level can be matched to protocol processing demands and application requirements.</p>
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Multilevel adaptive security system
… existing ad hoc secure routing protocols and multilevel security are first reviewed. Then a new system, called the Multilevel Adaptive Security System, which incorporates the multilevel security concept at both the application layer and the network layer, is proposed to provide adaptive …
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Broadband Multilevel Fast Multipole Methods
Numerical simulations of electromagnetic fields are very important for a plethora of modern applications like antenna design, wireless communication systems, optical systems, high-frequency circuits and so on. As a consequence, there is much interest in finding algorithms that make these …
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Techniques for Analog Multilevel Simulation
System-level and multilevel simulations are becoming more and more important in the design and verification of analog circuits and systems. Due to certain limitations in SPICE, new simulation and modeling techniques must be developed for this purpose. This dissertation proposes efficient algorithms …
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Bayesian Multilevel-multiclass Graphical Model
… to learn multiple Gaussian graphical models at multilevel from unknown classes. Another one is to select Gaussian process in semiparametric multi-kernel machine regression. The first problem is approached by Gaussian graphical model. In this project, I consider learning multiple connected graphs …
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Multilevel modeling of item position Effects
… hierarchical generalized linear model, a type of multilevel model, for estimating item position effects. Previous approaches to estimating and modeling position effects are described within a multilevel framework, and an extension of these approaches is demonstrated, one which incorporates item …
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Multilevel multidimensional scaling on the GPU
We present Glimmer, a new multilevel visualization algorithm for multidimensional scaling designed to exploit modern graphics processing unit (GPU) hard-ware. We also present GPU-SF, a parallel, force-based subsystem used by Glimmer. Glimmer organizes input into a hierarchy of levels and …
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Dynamic multilevel graph layout and visualisation
… (FDP) is described, exploiting use of a multilevel scheme to approximate distance between groups of vertices much like the Barnes Hut Octree. The method suggests better representation of the graphs underlying relationships. In experiments this algorithm, referred to as Multilevel Global …
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Multilevel inverters for renewable energy systems
… and to reduce the filtering requirements, multilevel inverters (MLI's) are preferred over two level voltage source inverters (VSI's). This thesis discusses the implementation of various types of MLI's and compares four different pulse width modulation (pwm) techniques that are often used in …
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PWM strategies for multilevel multiphase AC drives
Pulse width modulation (PWM) strategies for multilevel multiphase ac drives have been analysed in this thesis. The large amount of published work in the area of multiphase drives recognises their advantages compared to the standard three-phase solutions. Some of them arc improved power sharing …
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Multilevel Buck Converter Topologies and Their Applications
Multilevel buck topologies eliminate the limitations of conventional buck converters in some specific areas. In this thesis, novel multilevel buck topologies are proposed to meet the specific requirements of two particular applications respectively. In case I, a two-stage power conversion structure …
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Innovative GaN Multilevel Inverter For Motorsport Applications
L'abstract è presente nell'allegato / the abstract is in the attachment
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Balanced Multiresolution in Multilevel Focus+Context Visualization
… scheme in constructing an interactive multilevel focus+context visualization framework for the navigation and exploration of large-scale 2D and 3D images. Typically, the given filters are floating-point values, so our BWTs reversibly map integers to floating-point i.e. real values. We …
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Multilevel Methods for the Poisson-Boltzmann Equation
… we study the PBE, discretizations, and develop multilevel-based methods for approximating the solutions of these types of equations.
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The institutionalization of multilevel politics in Europe
This thesis addresses the question as to why multilevel politics is becoming an integral part of politics in Europe. Multilevel politics is conceptualized as a system which functions through a complex web of political relations within and across levels of decision making. The thesis argues that the …
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Multilevel frameworks for studying protein energy landscapes
… a major challenge. This thesis introduces multilevel computational frameworks that integrate diverse theoretical approaches (Chapter 2) to analyse protein energy landscapes. A key development is the lwONIOM library (Chapter 3), a freely accessible, multilevel, multicentre tool enabling …
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