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 159 for “"Synthesis methods"”.
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Nonlinear Robust Control Synthesis Methods for Spacecraft Applications
This thesis focuses on practical methods for constructing robust nonlinear control systems. In general, the development of such control systems is characterized by the solution to one or more Hamilton-Jacobi partial differential equations (HJE). However, no general analytical solution has yet been …
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Algebraic synthesis methods for linear multivariable control systems
The mathematical formulation of various control synthesis problems , (such as Decentralized Stabilization Problem , (DSP) , Total Finite Settling Time Stabilization for discrete time linear systems, (TFSTS) , Exact Model Matching Problem, (EMMP), Decoupling and Noninteracting Control Problems) , …
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The Optimization of Gold Coated Iron Nanoparticle Synthesis Methods
… more common with the increase in available methods that allow for utilization of self-assembly or ordered chemistry at the particle level. Biosensors are medical devices that have employed such systems, and the biosensor market is on the rise as the focus of patient evaluation shifts to …
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Control of quad-rotor UAVs using switched-system synthesis methods
This thesis applies switched systems synthesis and linear quadratic regulator (LQR) theory to control of a quad-rotor unmanned aerial vehicle (UAV). The thesis presents the development of the system dynamics, the theory of LQR and its implementation, the synthesis and simulation results of switched …
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Evaluating Treatment of Antiphospholipid Syndrome during Pregnancy with Knowledge Synthesis Methods
… and safety for pregnant women with APS. Methods: Given variability of the published information on pregnancy uses of APS medications, I approached this research in a systematic manner combining multiple methodologies. My first study was a systematic review and meta-analysis of the …
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Analysis and development of selective synthesis methods of hierarchical micro- and mesoporous carbons
Loodussäästlikule ning jätkusuutlikule energeetikale pööratakse kogu maailmas järjest enam tähelepanu võitlemaks globaalsete kliimaprobleemidega. Selleks, et taastuvaid energiaallikaid kasutada, on vajalikud ka efektiivsed energiasalvestussüsteemid. Üheks neist on superkondensaatorid, mis …
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Exact modal synthesis methods for seismic analysis of primary and multiply supported secondary systems
New modal synthesis methods are developed for calculating the exact eigenproperties of structures divided into two substructures. Unlike the conventional mode synthesis techniques, here the synthesis of modes is carried out by solving a second eigenvalue problem by nontraditional means: the …
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EXPLORATIONS IN MEDIUM-RING ETHER SYNTHESIS VIA UMPOLUNG HETEROATOM ACTIVATION: TOTAL SYNTHESIS, METHODS DEVELOPMENT, AND REAGENT SYNTHESIS
… alcohols.This dissertation provides the unified synthesis and isolation of various electronically and sterically distinct N-HVIs to promote their continued investigation in the Wengryniuk group as well as synthetic groups across the globe. Additionally, synthetic efforts toward natural product …
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ON COMPUTATIONAL SYNTHESIS AND DYNAMIC ANALYSIS OF NONLINEAR RESONANT SYSTEMS WITH INTERNAL RESONANCES
This work is concerned with synthesis methods for nonlinear structures and the
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The Nucleation and Growth of Nanoparticles for Heterogeneous Catalysis
… heterogeneous catalyst. As capabilities in both synthesis methods and characterization methods advance, the use of nanoparticles and sub-nanometer species are more commonly used. These small particles introduce new factors that can cause differences in reactivity. Various catalyst synthesis …
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The synthesis and characterization of sodium polysulfides for Na-S battery application
… in the Na-S batteries. Meanwhile, although many synthesis methods for sodium polysulfides have been reported, many related studies offer unclear and misleading parameters. This work examines several reported synthesis methods for sodium polysulfide. The results show that the sodium polysulfides …
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Hybrid synthesis method for mass exchange networks
Process synthesis can be approached from three techniques: heuristics, physical and thermodynamic insight, and mathematical programming. Hybrid methods where two or all of the synthesis methods are combined are now becoming used, taking advantage of the combined strength of the individual …
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Functional Microperiodic Polyacrylamide Gels Fabricated by Opal Inversion and Direct-Write Processes
… and the larger for cell growth scaffolds. Two synthesis methods were employed; inversion of self-assembled monodisperse colloidal crystals which yields an inverted FCC lattice of polymer, and direct ink writing (DIW) in which a continuous filament is patterned layer-by-layer into a defined …
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Understanding phase transformations during flash sintering
Improving the efficiency of synthesis methods in addition to establishing methods to produce novel materials or materials that are difficult to synthesize are driving factors in research for materials science. Flash sintering is both a method to densify ceramics within seconds and a method to …
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Microwave plasma synthesis of nano-sized silicon carbide at atmospheric pressure
… high-temperature technologies. Many different synthesis methods for the creation of SiC nanoparticles have been studied, including carbothermic reduction, pulsed laser deposition, sol-gel processes, microwave heating and various plasma techniques. Among the different synthesis methods reported …
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Assessing the Quality of Synthetic Speech when using Enhanced Speech as Training Data
Both speech synthesis and speech enhancement are well researched fields, but their interaction remains under-explored. In particular, the effectiveness of using enhanced speech to train a speech synthesis model is still relatively unknown. This thesis investigates the effects of using enhanced …
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Synthesis of derivatizable semiconductor nanocrystals through rational ligand design, and applications thereof
Over the last decade, the synthesis methods of colloidal nanocrystals have advanced at an astonishing rate, producing particles that are chemically stable, monodisperse, and, in the case of semiconductor quantum dots (QDs), immensely bright. Inorganic nanocrystals linked to functional organic or …
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Development and validation of a computational approach to predicting the synthesis of inorganic materials
… those experimentally accessible using available synthesis methods. While first-principles property screening has become routine, the present lack of a robust method for the identification of synthetically accessible materials is an obstacle to true materials design. In this thesis, I develop a …
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Development of Novel Slow-Release Micronutrient Fertilizers Using Mechanochemical Synthesis
… possibility of applying a green mechanochemical synthesis method for the formulation of boron (B) and molybdenum (Mo) fertilizers. More generically, the aim was to combine sustainable engineering and fertilizer manufacturing. The thesis consists of 6 chapters, including an overview of the …
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Computer-assisted synthesis of wrapping cam mechanisms
… the development of an interactive wrapping cam synthesis package based on analytical methods. The software presented in this thesis generates cam profiles for eight configurations of wrapping cam-pulley or wrapping cam-sprocket mechanisms. This software package has a graphical user interface to …
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