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 12 of 12 for “"steepest ascent"”.
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Multivariate Steepest Ascent Using Bayesian Reliability
The path of steepest ascent can used to optimize a response in an experiment, but problems can occur with multiple responses. Past approaches to this issue such as Del Castillo’s overlap of confidence cones and Mee and Xiao’s Pareto Optimality, have not considered the correlations of the responses …
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Precision of the path of steepest ascent in response surface methodology
… of determining the precision of the path of steepest ascent in response surface methodology to cover situations with correlated and heteroscedastic responses, including the important class of generalised linear models. It is shown how the eigenvalues of a certain matrix can be used to express …
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Some optimization procedures used in response surface methodology
… response are discussed, such as: the method of steepest ascent, sequential one-factor at a time procedure, a random balance method also known as random evolutionary operation (REVOP), rotating square evolutionary operation (ROVOP), and some one-factor optimization techniques. In addition two …
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Fractional Polynomial Response Surfaces and Tests for "Bumpature"
… polynomial model.</p> <p>While performing the steepest ascent procedure in a sequential experimentation framework, the researcher is searching for a maximum (or minimum) in the response surface. Traditionally the search stops when overall curvature is detected; unfortunately, the presence of …
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Metodologias de superfície de resposta : uma investigação no âmbito da indústria cerâmica e do vido
… pelo método da máxima inclinação ascendente (steepest ascent) se procuramos um ponto de máximo, ou pelo método da máxima inclinação descendente (steepest descent) se procuramos um mínimo. Chegados à superfície de resposta ou ajustamos um novo modelo de primeira ordem ou realizamos experiências …
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Response surface methods applied to submarine concept exploration
… techniques including Lagrange multipliers, steepest ascent methods, linear programming, non-linear programming, and dynamic programming. To further improve submarine concept exploration, this thesis examines a statistical technique called Response Surface Methods (RSM). The purpose of RSM is …
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A robustness type optimality criterion for experimental design
… a new stopping rule procedure for the method of steepest ascent used in response surface experiments. The new procedure is designed to provide an increase in the efficiency of the existing stopping rules. It is based on a sequential hypothesis testing controlled by two stopping bounds. These …
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Control scheme for cathode airflow during load swings in a solid oxide fuel cell/gas turbine system
… The first was an initial trajectory based on steepest ascent method to minimize valve movement. The second and more optimal trajectory determines the trajectories taking into account safe operation with the least penalty in efficiency particularly during load variations. This was achieved by …
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Effective design augmentation for prediction
… early stages of the study and obtain the path of steepest ascent. The path leads the experimenter out of this initial region of interest and into a new region of interest. The experimenter may fit another first order model here or, if curvature is believed to be present in the underlying system, a …
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Evaluating the recyclability of wet-strength sacks and liquid packaging board through repulping
… repulping conditions were determined using the steepest ascent method and central composite design, investigating consistency (3-9%), time (30-300 minutes), and persulphate dosage (1-12%). Optimal consistencies of 8% (WS Sacks) and 6% (LPB) were identified. For LPB, maximum pulp yield (68%) was …
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In Pursuit of Local Correlation for Reduced-Scaling Electronic Structure Methods in Molecules and Periodic Solids
… much more quickly and consistently than either a steepest ascent (SA) or a non-linear conjugate gradient (CG) based solver, with this fact demonstrated for a number of 1-, 2-, and 3-dimensional systems. Armed with our real, localized Wannier functions, we are now in a position to pursue the …
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In-Vivo and In-Vitro Cholesterol Removal by Lactobacilli and Bifidobacteria
… experimental regions were developed using the steepest ascent. Subsequent second-order polynomial regression model estimated that the optimum condition of the factors for cholesterol removal by L. casei ASCC 292 was 1.71% (wt/vol) inoculum size, 4.95% (wt/vol) FOS, and 6.62% (wt/vol) …