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 35 for “"dynamic structures"”.
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Robust Engineering of Dynamic Structures in Complex Networks
<p>Populations of nearly identical dynamical systems are ubiquitous in natural and engineered systems, in which each unit plays a crucial role in determining the functioning of the ensemble. Robust and optimal control of such large collections of dynamical units remains a grand challenge, …
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Bayesian networks for uncertainty estimation in the response of dynamic structures
… with stress/strain prediction procedures from dynamic test data used in turbine blade analysis. An accurate prediction of the maximum response levels for physical components during in-field operating conditions is essential for evaluating their performance and life characteristics, as well as …
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Use of Response Surface Metamodels in Damage Identification of Dynamic Structures
… has become apparent in many structural dynamics applications where structural health monitoring and damage prognosis programs are implemented. These programs require that damage identification routines have low computational requirements and be reliable with some quantifiable degree of …
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The fourier spectral element method for vibration analysis of general dynamic structures
… plates and beams is further developed. A general dynamic structure is then analyzed by dividing the structure into coupled triangular plates, rectangular plates, and beams. The accuracy and fast convergence of FSEM method is repeatedly benchmarked by analytical, experimental, and numerical results …
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Characterization of Dynamic Structures Using Parametric and Non-parametric System Identification Methods
… behaviors are important issues in structural dynamics. System identification is an important technique to characterize linear and nonlinear dynamic structures. The identification methods are usually classified into the parametric and non-parametric approaches based on how to model dynamic …
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Collective behavior of driven Janus colloids in external fields
… has focused on their equilibrium self-assembly structures by engineering static interactions between the colloids. The introduction of the fourth dimension, time, gives rise to a new generation of dynamic structures with novel functions. In this thesis, magnetic and electric fields are employed …
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Dynamic Acoustic -Articulatory Relations
… the relationship between tongue movement and dynamic formant patterns. Based on an analysis of tongue edge deformation from Lateral X-Ray Cineflurographic films, I argue that there are only two basic dynamic patterns: the pivot and the arch. These dynamic structures emerge when the analysis …
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Skeletal muscle fibre-type comparison of whole tissue and subcellular membrane phospholipids and fatty acids
Membranes are dynamic structures that affect cell structure and function. Compositional changes ofmembranes have been shown with the application of a perturbation; however these are limited to whole tissue analysis. The purpose of this thesis was to compare the phospholipid (PL) fatty acid (FA) …
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A Dynamic Correlation Model for Pricing Credit Derivatives in A Lattice Framework
… the operator methods which are applied to a new dynamic correlation model extended to the class of affine reduced-form models. The proposed operator methods for lattice representations are robust and allow one to specify rich dynamic structures for the hazard rates during the portfolio credit …
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Contextual Constraints: An Examination of Implicit Followership Theories
… was designed to assess follower prototypes as dynamic structures. Connectionist theory is a good framework to understand the process by which followership perceptions are altered by contextual factors. Organizational culture, change in immediate leader and follower prototypes were measured in …
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Structure and dynamics of mangetorheological fluids confined in microfluidic devices
… to interact and self-assemble into solid-like structures. In the past few years, self-assembled MR fluids have found use as structural components in a variety of micro-scale applications since their use provides an attractive alternative to traditional lithography as a means to create …
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Urban complex : between institutions and space
… informal institutional setups interact to invent dynamic structures for collective action and governance to address the limited common-pool resources inside the informally repurposed, mix-use buildings, a unique urbanism in the inside begins to emerge. To analyze such an environment, I propose to …
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Photonic Metasurfaces for Spatiotemporal and Ultrafast Light Control
The emergence of photonic metasurfaces - planar arrays of nano-antennas - has enabled a new paradigm of light control through wave-front engineering. Space-gradient metasurfaces induce spatially varying phase and/or polarization to propagating light. As a consequence, photons propagating through …
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Compressed Sensing Beyond the IID and Static Domains: Theory, Algorithms and Applications
… sparsity to recover low dimensional signal structures in high ambient dimensions using few measurements, where i.i.d measurements are at disposal. However real world scenarios typically exhibit non i.i.d and dynamic structures and are confined by physical constraints, preventing …
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Applications of Solid State Nuclear Magnetic Resonance Spectroscopy as a Tool for Structure Based Drug Design
… studies to investigate the static and dynamic structures of bisphosphonates bound to bone. I also initiated preliminary research on the interaction of lipids and sterols in bilayers to pave the way for better understanding the transport of drugs through cell membranes. The results of …
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Molecular mechanisms of kinetochore microtubule attachment
… chromosome movement. Microtubules are highly dynamic structures that undergo dramatic structural changes during depolymerization. The results presented in this thesis define essential functions of the Astrin-SKAP-LC8 and Skal complexes at the kinetochore-microtubule interface. First, we …
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Public-private partnerships in space projects : an analysis of stakeholder dynamics
… challenges such as conflicts of interest. If the dynamic structures which cause challenges in PPPs are identified, they will help to predict potential challenges in future PPP projects. Therefore, this research develops a dynamics model of which challenges arise in the application of PPP …
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Using phase space attractors to evaluate system safety constraint enforcement : case study in space shuttle mission control procedure rework
… to evaluate how well STAMP safety control structures enforce system safety constraints. Phase space attractors are mathematical results that emerge from the behavior of systems with dynamic structures that draw or constrain these systems to specific regions of their phase space in spite of …
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Torsion heating in complex plasma crystals.
… plasmas. Complex plasmas host analogous structures to naturally occurring ones, like crystals, and may be studied to observe previously inaccessible features and effects in naturally occurring systems. Microparticles levitated in the plasma may form two-dimensional crystalline structures …
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