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 51 for “"Response Surfaces"”.
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Bayesian hierarchical modelling of dual response surfaces
Dual response surface methodology (Vining and Myers (1990)) has been successfully used as a cost-effective approach to improve the quality of products and processes since Taguchi (Tauchi (1985)) introduced the idea of robust parameter design on the quality improvement in the United States in …
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Fractional Polynomial Response Surfaces and Tests for "Bumpature"
… the use of simple power transformations of the response and the predictors as originally proposed by Box and Tidwell (1962). Using these transformed variables, four types of fractional polynomial models are considered: a first-order model, a first-order model with cross-product terms, a …
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Building a knowledge based simulation optimization system with discovery learning
… in that it examines simulation outputs, called "response surfaces," and notes their behavior. In particular both point and region estimates are studied for different response surfaces: Conclusions are developed that indicate when and where simulation-optimization techniques such as Response …
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Improve the Active Subspace Method by Partitioning the Parameter Space
… our proposed algorithms produce more accurate response surfaces than those generated by the standard active subspace method. To evaluate the accuracy, we test the response surfaces with a separate test set of points and calculate their mean squared error for each response surface. Our proposed …
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Improve the Active Subspace Method by Partitioning the Parameter Space
… our proposed algorithms produce more accurate response surfaces than those generated by the standard active subspace method. To evaluate the accuracy, we test the response surfaces with a separate test set of points and calculate their mean squared error for each response surface. Our proposed …
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Reassessment of bone parameters and evaluation of a bone biopsy technique for determining calcium and phosphorus status of swine from weaning to market
… Ca/P status of postweaning swine, and to derive response surfaces relating diet and time effects to observed performance and bone characteristics. Pigs were slaughtered every 4 weeks following the start of the trials to obtain third and fourth metacarpals and metatarsals. Asymptotic response …
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Parametric Design and Optimization of an Upright of a Formula SAE car
… utilizing finite element analysis and response surfaces to minimize the weight of the upright. Various constraints such as frequency, stress, displacement, and fatigue are taken into consideration during this optimization process. A parametric finite element model of the upright was …
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A response surface for the complex modulus of composite materials
… program resulted in the development of response surfaces for the complex moduli of composite materials.
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Bayesian Inference and Experimental Design of Combustion Kinetic Models
… shock tube experiments. Neural networks serve as response surfaces. Maximum a posteriori estimation and Markov chain Monte Carlo sampling are employed to determine optimal parameters as well as their uncertainty. Three optimization strategies are employed: utilizing the entire species time-history …
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Response curves of deterministic and probabilistic cellular automata in one and two dimensions
… desired output. This allows us to construct a response curve - a relationship between the proportion of cells in state 1 after niterations as a function of the initial proportion. We derive response curve formulae for many two-dimensional deterministic CA rules with L-neighbourhood. For all …
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Evaluation of a particle beam interface for LC/MS
… minimum detectable quantities (MDQ), linear response, and band broadening contributions. The MDQ's of the analytes in electron impact and chemical ionization modes are extrapolated from experimental signal to noise data. The linearity study involves ten compounds analyzed at five different …
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Response surface approximations for pitching moment including pitch-up in the multidisciplinary design optimization of a high-speed civil transport
… included directly in the design process. Using response surface methodology, polynomial approximations to the results obtained from a computationally expensive estimation method were developed by analyzing a set of statistically selected wing shapes. These response surface models were then used …
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Uncertainty and sensitivity analysis for long-running computer codes : a critical review
… This thesis discusses the use of polynomial Response Surfaces (RS), Artificial Neural Networks (ANN), and Kriging/Gaussian Processes (GP) for metamodeling. Moreover, two methods are discussed for estimating the uncertainty introduced by the metamodel. The first of these methods is based on a …
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Probabilistic turbine blade thermal analysis of manufacturing variability and toleranced designs
… on both the finite element model as well as response surfaces built from the finite element model.
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DEVELOPMENT OF FATIGUE MODELS FOR COPPER TRACES ON PRINTED WIRING ASSEMBLIES UNDER QUASI-STATIC CYCLIC MECHANICAL BENDING
… generated during the cyclic bending tests, and response surfaces (RS) to facilitate iterative assessment of the model constants. Cyclic three-point bend tests were conducted on land grid array (LGA) components during this investigation. Failure analysis revealed the fatigue failure sites to be …
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The method of sectioning with application to simulation
… is to adapt the standard search by sectioning to response surfaces confounded by random error and to develop cost related termination criteria for the application thereof. Replication is employed at each point of the search in an effort to reduce the random error. Of particular concern is the …
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Sensitivity Analysis of the Forest Vegetation Simulator Southern Variant (FVS-Sn)for Southern Appalachian Hardwoods
… the FVS-Sn model using Latin hypercube sampling. Response surfaces were fitted to determine the magnitudes and directions of relationships between FVS-Sn model parameters and predicted 10-year basal area increment. Model sensitivities were calculated for five different test scenarios for both …
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A study of heuristic scheduling
… and the results presented in the form of reponse surfaces. The properties of the measured responses are examined using the techniques of Fourier and Walsh analysis and a model of 'regular' constituents of the surfaces is presented. The re:sponzue surfaces observed in job-shop scheduling problems …
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