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 18 of 18 for “"Optimum designs"”.
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Optimal Row-Column Designs for Correlated Errors and Nested Row-Column Designs for Uncorrelated Errors
… optimality conditions are derived separately for designs in the plane and on the torus using more general linear models than those considered elsewhere in the literature. Examples of universally optimum planar designs are given, and a method is developed for the construction of optimum and near …
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Optimum experimental designs for models with a skewed error distribution: with an application to stochastic frontier models
In this thesis, optimum experimental designs for a statistical model possessing a skewed error distribution are considered, with particular interest in investigating possible parameter dependence of the optimum designs. The skewness in the distribution of the error arises from its assumed …
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Optimum Design of Spectral Efficient Green Wireless Communications
<p>This dissertation focuses on the optimum design of spectral efficient green wireless communications. Energy efficiency (EE), which is defined as the inverse of average energy required to successfully deliver one information bit from a source to its destination, and spectral efficiency (SE), …
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Nonlinear Analysis of the Load Transfer Mechanism in Rigid Pavement Systems Considering Various Interface Conditions
… parameter studies directed towards obtaining optimum designs.
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The Optimum Design of a Step Voltage Regulator.
Optimum designs of voltage regulating transformers can be achieved only when the designer knows the characteristics of the different design parameters and how they affect the total design. The criteria controlling the design of most voltage regulating transformers are not readily available since …
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Optimum design of structures with stability constraints using the evolutionary optimisation method
… until the structure evolves towards the desired optimum. From the results of finite element analysis, the contribution of each element to the required structural response may be assessed. Based on this assessment, material is gradually shifted or removed in the design domain. In doing so optimum …
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Design of Automotive Joints Using Response Surface Polynomials and Neural Networks
… used to optimize the overall car. The determined optimum performance characteristics of the components are used as performance targets to design these components. Since designers do not know the relation between the performance characteristics of the components and their dimensions and mass, this …
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Reliability-based Design Optimization of a Nonlinear Elastic Plastic Thin-Walled T-Section Beam
… The method started by obtaining a deterministic optimum design that has the lowest possible weight for a prescribed safety factor (SF), and based on that design, the method obtains an improved optimum design that has either a higher reliability or a lower weight or cost for the same level of …
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Application of Optimization Techniques to the Design of a Boost Power Factor Correction Converter
… to provide in a short period of time globally optimum designs of the system for different sets of specifications. The software design tool is then employed to optimize the system design, and the savings with respect to the traditional design methodology are highlighted. The optimization problem …
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Analysis, design, and evaluation of the optimum topology Cuk converter in comparison with the conventional Buck-Boost converter
… to the loss and weight breakdowns. of the optimum design of the two converters for a given set of performance specifications. The comparison shows that the Cuk converter outperforms the conventional Buck-Boost converter in both operating efficiency and weight considerations for both the …
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Economically optimum design of cusum charts when there is a multiplicity of assignable causes
… run average loss cost per hour for the process. Optimum designs for various sets of cost and risk factors are found by minimizing the long run average loss-cost per hour of the process with respect to the design parameters of a cusum chart. Optimization is accomplished by use of Brown's method. A …
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Designs for Zero Polarization-Mode Dispersion And Polarization-Maintaining Fibers
… polarizers or mode filters are presented. First, optimum designs for high-birefringence as well as single-polarization single-mode fibers are studied. For high-birefringence fibers, several index profiles were obtained that provided high birefringence while achieving zero or very small dispersion …
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The Development of a Novel Figure of Merit to Analyze Strain-Mediated Magnetoelectric Antennas
… strain-mediated antennas for its ability to find optimum designs while reducing the overall simulation run-time by an order of magnitude.
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Two-dimensional transient analysis of buried-channel charge-coupled devices
… kind of analysis can provide information for optimum designs and prediction of device performance. However, so far this kind of study has not been done accurately because of the prohibiting length of computer time required;With a new approach, an accurate two-dimensional transient analysis of …
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Distortion-Tolerant Communications with Correlated Information
… the correlation can be used to facilitate system designs and to improve system performance. First, the optimum</p> <p>node density, i.e., the optimum number of nodes in a unit area, is identified by utilizing the spatial data correlation in the one- and two-dimensional wireless sensor networks …
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Aeroacoustic transfer of leading edge serrations from single aerofoils to low-pressure fan applications
… of leading edge serrations to develop optimum designs. Second is the need to examine the transferability of the known effects of leading edge serrations from a single aerofoil to full rotors, which are considered to be the final area of application. This thesis aims to assist in the …
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Design and optimization of chalcogenide waveguides for supercontinuum generation
… SC never extended beyond 4.5 μm for any of our designs. However, SC could be extended to beyond 5 μmfor a pump wavelength of 3.1 μm. A broadband SC spanning from 2 to 6 μm and extending over 1.5 octave could be generated with a moderate peak power of 500 W at a pump wavelength of 3.1 μm using an …
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Design-Oriented Translators for Automotive Joints
… analysis of hundreds or thousands of joint designs. The elements of the database serve as examples for developing Translator A. Response surface polynomials and neural networks are used to develop translator A. Stepwise regression is used in this study to rank the design variables in terms …