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 17 of 17 for “"higher order model"”.
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Investigation of a contact resonance atomic force microscopy scan speed phenomenon
… AFM and other contact-mode AFM techniques at higher scan speeds. This thesis presents evidence to confirm the existence of a scan speed dependent contact-mode AFM phenomenon and applies a squeeze film hydrodynamic lubrication model to explain it. Contact-resonance spectroscopy is used to …
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Development of a Higher-Order Ice Sheet Model Using a Rescaled Coordinate System
… in response to climate forcings, whereas IPCC models show that ice is not responsive to climate change over such short periods of time. Many believe the IPCC type models fail to show short term climate responses due to the simplifications they make to ice sheet mechanics. Here, we develop a …
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Development of a Higher-Order Ice Sheet Model Using a Rescaled Coordinate System
… in response to climate forcings, whereas IPCC models show that ice is not responsive to climate change over such short periods of time. Many believe the IPCC type models fail to show short term climate responses due to the simplifications they make to ice sheet mechanics. Here, we develop a …
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Turbulence modeling in hypersonic inlets
… analyze the performance of different turbulence models when applied to flow through a Mach 7.4 hypersonic inlet. The analysis, which is two-dimensional, is done by comparing computational results from a Parabolized Navier Stokes code, with experimental data. The McDonald Camarata (MC) and Baldwin …
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Discrepancies in Parent and Child Assessment of Child's Posttraumatic Stress Symptoms Using the Ptsd Checklist
… adolescent self-reports suggested a two-factor model provided the best fit to the data. Specifically, a two-factor higher order model was the model of best fit. However, a small sample size made conclusions tentative. Implications for PTSD assessment and the DSM-IV conceptualization of PTSD are …
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Development and Initial Validation of the Managerial Success Factors Inventory: Transportation Version (MSFI: TV)
… management is summarized. Reigning models of general managerial competency were used with focus group and cognitive interview data to develop the scale. The conventional three-phase scale development research design was followed (exploratory factor analysis, confirmatory factor …
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Psychometric Evaluation of the Return to Duty Readiness Questionnaire
… evidence has supported use of the Fear Avoidance Model as a suitable model to address pain-related disability and chronicity from a multidimensional pain neuroscience approach. While several fear avoidance measurement tools exist, one that addresses the complexity of the Army environment requires …
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The Role Of Memory, Personality, And Thought Processes In Posttraumatic Stress Disorder
<p>Abstract</p> <p>The autobiographical memory model of PTSD posits that the memory for the traumatic experience is influential in development of the disorder (Rubin, Berntsen, & Bohni, 2008). In particular, Berntsen & Rubin (2006) argue that the degree of event centralization, the incorporation of …
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Integration of Higher-Order Physics in the Community Ice Sheet Model: Scientific and Software Concerns
The Community Ice Sheet Model (CISM) is a next-generation land ice model that is designed to answer important questions regarding the response of Earth’s land ice to climate forcing. The program extends Glimmer, an ice sheet model based on the shallow ice approximation. This thesis concerns a …
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Integration of Higher-Order Physics in the Community Ice Sheet Model: Scientific and Software Concerns
The Community Ice Sheet Model (CISM) is a next-generation land ice model that is designed to answer important questions regarding the response of Earth’s land ice to climate forcing. The program extends Glimmer, an ice sheet model based on the shallow ice approximation. This thesis concerns a …
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Getting back to connectedness: an exploration of a team reflective practice group in a personality disorder service
… staff working with clients with a personality disorder diagnosis. These staff can experience powerful feelings and behaviours and respond with defensive practices and/or withdrawal. These reactions to the psychological disturbance encountered can manifest at an individual staff, team and …
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Performance of Nonlinear Mechanical, Resonant-Shunted Piezoelectric, and Electronic Vibration Absorbers for Multi-Degree-of-Freedom Structures
… A single, consistent, physically similar model capable of examining the response of all three devices is developed. The performance of vibration absorbers attached to single-degree-of-freedom structures is next examined for performance, robustness, and stability. Perturbation techniques …
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Relational mapping in symbolic tasks by young children
… This requires (1) an appreciation of the higher-order symbol-referent relation (i.e., that the symbol stands for the referent) and (2) mapping information from one to the other. Using a road map to navigate, for example, requires (1) understanding that the map corresponds to a particular …
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Nonlinear and Linearized Analysis of Vibrations of Loaded Anisotropic Beam/Plate/Shell Structures
L'abstract è presente nell'allegato / the abstract is in the attachment
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Modelling and Control of Chemical Processes using Local Linear Model Networks
… such as chemical process engineering. The modelling and control may face some challenges as the procedures applied to chemical reactors and processes are nonlinear. Therefore, the aim of this research is to overcome these challenges by applying a local linear model networks technique to …
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Analysis of Low-Energy Lunar Transfers in a High-Fidelity Dynamics Model
… transfers take place in simplified dynamical models, such as the Planar Circular Restricted Three Body Problem, with very few higher-fidelity models being implemented. This approach is good to understand the dynamics of these trajectories as well as provide initial guesses for higher-fidelity …
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Advanced PID Control Optimisation and System Identification for Multivariable Glass Furnace Processes by Genetic Algorithms
… a strong emphasis is given on the realistic model parameters identi cation method, which is illustrated to be applicable to a wide range of higher order model parameters identi cation problems. A complete, realistic and continuous excess oxygen model with nonlinearity effect was developed and …