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 28 for “"parametric sensitivity"”.
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Effects of Tire Attributes on the Aerodynamic Performance of a Realisitic Car-Tire Assembly and the Sensitivity Analysis to Understand the Impact of the Rim Protector
… the vehicle based on a thorough and systematic sensitivity study. The effect of tire attributes in a vehicle assembly as well as the sensitivity study of a rim protector on a standalone tire is conducted. This helps in better understanding the flow structures around the car body and around the …
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Variational Analysis In Parametric Optimization
… spaces. This calculus is applied in the study of sensitivity analysis for solution maps to the parameterized generalized equations in Asplund spaces, where both bases and fields are parameter-dependent multifunctions. We analyze the parametric sensitivity of either stationary points or stationary …
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Managing the transition toward self-sustaining alternative fuel vehicle markets : policy analysis using a dynamic behavioral spatial model
… alternative vehicle technologies. Structural and parametric sensitivity analyses are used to build understanding of system behavior and to identify policy leverage points or the need for further model calibration.
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Objective assessment of static and dynamic seats under vehicular vibrations
… seat-passive load performance characteristics. A parametric sensitivity analysis is further carried out to investigate the influence of seat cushion parameters on the vibration transmission performance of the seat-human body model. Developments in dynamic seats (suspension seats) are briefly …
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Misalignment Effects of the Self-Tracking Laser Doppler Vibrometer
… in this thesis. The study consists of a parametric sensitivity analysis of misalignment variables, a parametric Monte Carlo analysis of misalignment variables, and a full interaction Monte Carlo analysis of misalignment variables. In addition, the results of the misalignment variable …
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Design Optimization of the First Stage Fan Blade of a Low Bypass Turbofan Engine
… the varied parameters across the given range in parametric sensitivity study fashion. Due to the selected range of the varied input parameters, the optimal design of the rotor geometry can then be carefully selected based upon the calculated fluid flow field parameters, solved for at each design …
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Modeling and analysis of market share dynamics in a duopoly subject to affine feedback advertising policies and delays
… and their stability properties, as well as parametric sensitivity, under the proposed advertising policies. All proposed models are analysed for stability, the presence of oscillations, existence of Hopf bifurcations when implementation or adoption delays are introduced. The extended models …
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Sensitivity analysis of oscillating hybrid systems
… on the dynamic behavior of such systems is sensitivity analysis. A theory for sensitivity analysis with respect to the initial conditions and/or parameters of oscillating hybrid systems is developed and discussed. Boundary-value formulations are presented for initial conditions, period, …
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Numerical Investigations of Geologic CO2 Sequestration Using Physics-Based and Machine Learning Modeling Strategies
… simulations, particularly in the context of parametric sensitivity. This work focuses on parametric uncertainty associated with multi-phase fluid dynamics that govern geologic CO2 storage. The effects of this uncertainty are interrogated through ensemble simulation methods that implement both …
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Pool Boiling of FC 770 on Graphene Oxide Coatings: A Study of Critical Heat Flux and Boiling Heat Transfer Enhancement Mechanisms
… porosity and thermal activity were observed. A parametric sensitivity analysis of these surface factors was performed to understand the CHF and BHT enhancement mechanisms. In the presence of graphene-oxide coating, the data indicated an increase of 50% in CHF. As the experiment continued, a …
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Modelling and Multi-objective Optimization of Continuous Protein Recovery in Liquid-Solid Circulating Fluidized Bed (LSCFB)
… good agreement with available experimental data. Parametric sensitivity analysis showed complex interplay of various operational parameters over the system performance indicators. Moreover, the change in operating conditions in one column affects the performance of the other column as the two …
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Macroscopic continuum and molecular dynamics modeling and simulation studies of the transport and adsorption of charged macromolecules in ion-exchange chromatography systems
… adsorbent particles is presented, and the parametric sensitivity of the concentration overshoot phenomenon with respect to its enhancement or suppression is studied. Practical implications of this phenomenon on operational policies and configurations of ion-exchange chromatography (IEC) …
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Empirical Multiphase Model for Strength Evolution of High-Chromium Steel Alloys
… (RMSE = 71.59 MPa, 6.06% beyond 2520h). Parametric sensitivity analysis reveals MoN activation energy critically governs intermediate-stage behaviour, which provides a clear pathway for model refinement. The systematic late-stage underprediction identifies the need for explicit TiN/VN …
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Performance of RC Columns Retrofitted with UHPFRC Jackets Under Cyclic Displacement Reversals
… contribution of curvature in bond strength, and parametric sensitivity FEA was conducted, where the spurious lateral effects occurring on the various bond test setups were captured.
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Optimization of Fast MR Imaging Technologies using the Case-PDM to Quantitatively Assess Image Quality
… to optimize various parameters and study parametric sensitivity, using a large number in vivo MRI data. We conclude that our PDM can faithfully represent human observer image quality evaluation and can be useful in evaluating reconstruction algorithms, especially in evaluating artifact …
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Mathematical modelling of drug metabolism : using <em>in silico</em> techniques to investigate the cytochrome P450 enzyme system in hepatic reductase null mice
… level. Once these models were developed the parametric sensitivity was derived in order to see whether there were any needless parameters so that the models were streamlined and to test the model`s robustness against error. The novel three-compartment model was developed in order to explain …
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On Aerothermal Optimization of Low-Pressure Steam Turbine Exhaust System
… geometries like LPES is unreliable. Thus, a Non-Parametric Surrogate Model (NPSM) is developed, which directly builds a mapping relationship between surface mesh and two-dimensional distribution of fluid variables. It can select sensitive geometric features from surface meshes by Graph Neural …
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Detailed Population Balance Modelling of Titanium Dioxide Nanoparticle Synthesis
… data with identical, simulated quantities. A parametric sensitivity study is performed to investigate key model parameters.
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European and German low-carbon energy transition
… and transportation transition, in particular. Parametric sensitivity analysis is performed, highlighting areas with high impact which policy makers should focus on. It can be shown that demand reductions, next to costs of renewables and carbon prices, have the highest effect on multiple …
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To What Extent Do Ride-Hailing Services Replace Public Transit? A Novel Geospatial, Real-Time Approach Using Ride-Hailing Trips in Chicago
… the robustness of this probability using a parametric sensitivity analysis, and performed a two-tailed t-test, with a 95% confidence interval. In combination with a Summation of Probabilities, the results indicate that the total travel time for a transit trip has the greatest influence on …
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