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 71 for “"Parameter Sensitivity"”.
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Parameter sensitivity, estimation and convergence: an information approach
… which are suitable for the identification of the parameters in arbitrary state-space structures. Deterministic and stochastic versions of these identification algorithms are presented. These two classes indicate the number of realizations used in the identification, not the presence or absence of …
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An experimental analysis of two-fluid traffic model parameter sensitivity
… other cities around the world. In addition, the sensitivity of the Two-Fluid model parameters has been studied for different unit trip lengths used in calibration for the Roanoke CBD. The three-unit trip lengths tested were 1-mile, 2-mile, and 3-mile. Statistical analyses led to the conclusion …
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Numerical Solution Techniques for Reaction Parameter Sensitivity Coefficients in Multicomponent Subsurface Transport Models
… reaction source/sink terms. The corresponding sensitivity equations take the form of a system of linear PDEs and ODEs. Codes are developed to compare the practice of solving the entire system of sensitivity equations to applying the operator splitting approach to solve the sensitivity …
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Thermal Fe Analysis of Powder Bed Fusion Process: Power Input Evaluation and Parameter Sensitivity
… The primary objective was to study how selected parameters of the PBF process affect temperature distributions, since a high temperature gradient and cooling rate are associated with residual stress and deformation in the built part. Since it was difficult to devise an analytical solution for …
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Assessment of Morphology and Hemodynamics in Normal and Remodeled Microvasculature with Parameter Sensitivity Analysis
… effective. In order to improve the analysis a parameter sensitivity analysis tool (PSAT) was developed. The PSAT is helpful in teasing apart the individual effects of morphological parameters such as vessel connectivity, vessel diameters, and vessel lengths. In future, another important …
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Examination of model uncertainty and parameter sensitivity in correlated systems using covariance structure analysis
Correlated parameters are often expected when modeling a natural system. However, correlation among the variables often blurs the model uncertainty and makes it difficult to determine parameter sensitivity. In simple systems, model structure and uncertainty can be explained directly; however, …
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A novel approach to calculating relative scattering parameter sensitivity in computer-aided design programs
Relative sensitivity is a measure of the percentage change in a system parameter caused by a percentage change in a component parameter. The adjoint network method has previously been used by Monaco and Tiberio in the computation of relative scattering parameter sensitivity. A new approach is …
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Improvement of Anti-Lock Braking Algorithms Through Parameter Sensitivity Analysis and Implementation of an Intelligent Tire
… has been optimized by performing a threshold sensitivity analysis. The results show a definite improvement in control system strategy having known information at the tire contact patch.
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Mapreduce and heterogeneity: power-aware bag-of-tasks, framework parameter sensitivity, and dynamic cluster aware framework configuration
<p>This dissertation presents the techniques for adaptation of MapReduce frameworks to incorporate heterogeneity-aware scheduling algorithms, an inspection of cluster configurations and how they impact these scheduling algorithms, an analysis regarding how the cluster configuration and the …
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Longitudinal stability and control analysis and parameter sensitivity investigation of fixed wing aircraft in ground proximity using various aerodynamic approaches
… proximity; to assess the influence the design parameters such as the centre of the mass placement, tail length, tail height and wing aspect ration have on the stability of longitudinal motion; and to suggest a feedback control strategy that would alleviate the instability.
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Advanced Methods for Defect Engineering in Silicon
… utilizes rigorous system-based methods including parameter sensitivity analysis and maximum a posteriori (MAP) estimation to refine model parameters.
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Structural Condition Assessment Of Prestressed Concrete Transit Guideways
… models (FEMs) to be used in static and dynamic parameter sensitivity studies, as well load rating and reliability analysis of the structure. The FEMs are used for eigenvalue analysis and simulations. Parameter sensitivity studies consider the effect of changing critical parameters, including …
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A Systems Approach to the Modeling and Control of Molecular, Microparticle, and Biological Distributions
… simulation algorithm development, parameter sensitivity analysis, parameter estimation, model validation, optimal control formulation, and worst-case and distributional robustness analysis. Free radical bulk polymerization is the model system for molecular distributions. In situ …
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Parametric Design and Optimization of an Upright of a Formula SAE car
… and suspension geometry. By conducting parameter sensitivity analysis, three design variables were chosen from a pool of five, and response surfaces were constructed to represent the constraints and objective function to be used to solve the optimization problem using Sequential …
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Modelo paramétrico para extensão de deflúvios mensais
… of two parts: one for self-optimization of the parameters, and another for extension of the records. Parameter sensitivity tests were carried on in order to check their final variation when poorly evaluated in the start of the self-optimization process. The model was appplied to the Alto Tietê …
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A novel parameter compensation scheme for indirect vector controlled induction motor drives
… of these drives is lost as they are highly parameter sensitive. Studies have indicated that the decoupling of the torque and the flux channels is lost when machine parameters change with temperature, saturation, etc. Many schemes have been proposed to overcome these parameter sensitivity …
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Biologically-plausible six-legged running : control and simulation
… feedback loops and is defined by a total of 13 parameters. The control utilizes no vestibular-type inputs to actively control orientation. Evidence from perturbation, robustness, motion analysis, and parameter sensitivity tests indicate a high degree of stability in the simulated gait. The …
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Optimal control strategies for saccadic eye movements in humans
… system and nonlinear system, controllability, parameter sensitivity, and the use of time optimal control as an approach to understanding neural strategies that correspond to eye movement. In particular, optimization theory provides one scenario for the selection process of motor planning. By …
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Dynamic economic dispatch of power systems by multi-pass dynamic programming
… for cases involving several generators. Parameter sensitivity is also studied here. Finally, some consideration is given to the comparison of multi-pass dynamic programming and conventional dynamic programming.
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