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 37 for “"Synthesis design"”.
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Fighter Aircraft Synthesis/Design Optimization
… drives the fixed-wing AAF wing-geometry design to be at its best flying the supersonic mission segment, while the morphing-wing AFS-A wing design is able to effectively adapt to different flight conditions, cruising at subsonic speeds much more efficiently than the fixed-wing AAF and, …
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METAL NANOMATERIALS: SYNTHESIS, DESIGN, AND APPLICATIONS
… as an example to study the shape-controlled synthesis of metal nanocrystals by adjusting the injection temperature and the added halide ions (e.g., Cl-, Br-). Our findings indicated that due to the different electronegativities, halide ions are selectively adsorbed on specific crystal planes …
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The synthesis, design and study of new Type 3 porous liquids
This thesis details the synthesis of over 100 new Type 3 porous liquids based on a broad range of microporous solids dispersed in electrically neutral solvents. These new porous liquids were successfully characterised and their physical properties including viscosity, density, disperision stability …
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Mission-Integrated Synthesis/Design Optimization of Aerospace Subsystems under Transient Conditions
… model known as the "Tip-to-tail" model meets the design specifications set forth by the INVENT program. The system consists of six intimately linked subsystems that include a propulsion subsystem (PS), air vehicle subsystem (AVS), robust electrical power subsystem (REPS), high power electric …
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Synthesis, design, and fabrication techniques for reconfigurable microwave and millimeter-wave filters
… needed. This dissertation focuses on the theory, design, and implementation of reconfigurable microwave and millimeter-wave filters for use in such receivers.</p> <p>First, a theoretical framework is developed for absorptive bandstop filters, a new class of bandstop filters which overcomes some of …
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Optimization Strategies for the Synthesis / Design of Hihgly Coupled, Highly Dynamic Energy Systems
… work several decomposition strategies for the synthesis / design optimization of highly coupled, highly dynamic energy systems are formally presented and their implementation illustrated. The methods are based on the autonomous optimization of the individual units (components, sub-systems or …
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Performance improvement for robotic mechanisms by: synthesis design, dynamic balancing and adaptive control techniques
… through the approaches of robotic mechanism synthesis design, dynamic balance, and adaptive control. A novel three degrees of freedom hybrid manipulator is designed. After discussing the advantages of this new type of hybrid manipulator, the kinematic and Jacobian matrix of this manipulator …
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Synthesis, design and characterization of a distributed feedback grating based non-linear optical chemosensor
Current optical chemosensors that operate by a 3R sensing approach - recognize, relay and report -- generate a measurable luminescent signal in the presence of targeted analyte. However, the advancement of chemical sensing into the micro- and nanoscale regimes necessitates the development of new …
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Dynamic Proton Exchange Membrane Fuel Cell System Synthesis/Design and Operation/Control Optimization under Uncertainty
… level unit make the problems of dynamic system synthesis/design and operation/control highly complex. Typically, the synthesis/design optimization of energy systems is based on a single full load condition at steady state. However, a more comprehensive synthesis/design and operation/control …
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Application of a decomposition strategy to the optimal synthesis/design of a fuel cell sub-system
… of a decomposition methodology to the synthesis/design optimization of a stationary cogeneration fuel cell sub-system for residential/commercial applications is the focus of this work. To accomplish this, a number of different configurations for the fuel cell sub-system are presented …
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The Integration of State Space into the Dynamic Synthesis/Design and Operational/Control Optimization of a PEMFC System
A typical approach to the synthesis/design optimization of energy systems is to only use steady state operation and high efficiency (or low total life cycle cost) at full load as the basis for the synthesis/design. Transient operation is a secondary task to be solved by system and control engineers …
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Application of a Decomposition Strategy to the Optimal Synthesis/Design and Operation of a Fuel Cell Based Total Energy System
… of "thermoeconomic isolation" applied to the synthesis/design and operational optimization of a stationary cogeneration proton exchange membrane fuel cell (PEMFC) based total energy system (TES) for residential/commercial applications is the focus of this work. A number of different …
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A Decomposition Strategy Based on Thermoeconomic Isolation Applied to the Optimal Synthesis/Design and Operation of an Advanced Fighter Aircraft System
… of "thermoeconomic isolation" applied to the synthesis/design and operational optimization of an advanced tactical fighter aircraft is the focus of this research. Conceptual, time, and physical decomposition were used to solve the system-level as well as unit-level optimization problems. The …
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Dynamic Synthesis/Design and Operation/Control Optimization Approach applied to a Solid Oxide Fuel Cell based Auxiliary Power Unit under Transient Conditions
A typical approach to the synthesis/design optimization of energy systems is to only use steady state operation and high efficiency (or low total life cycle cost) at full load as the basis for the synthesis/design. Transient operation as reflected by changes in power demand, shut-down, and start-up …
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Synthesis, Design, and Biological Evaluation of Inhibitors and Activators of Src Homology 2 Domain-Containing Inositol Phosphatase (SHIP) and Synthetic Studies of Apicularen A and Maoecrystal V
… <p>The first part of this work involves the synthesis, design, and biological evaluation of aminosteroids as inhibitors for the SH2-containing inositol phosphatase 1 (SHIP1). SHIP1, a 145 kDa protein, is involved in regulating the formation of new blood cells. High- throughput screening …
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A Study of Morphing Wing Effectiveness in Fighter Aircraft using Exergy Analysis and Global Optimization Techniques
… and exergy-based methods to the integrated synthesis/design of an Air-to-Air Fighter (AAF) aircraft with and without wing-morphing capability. In particular, a morphing-wing AAF is compared to a traditional fixed-wing AAF by applying large-scale optimization using exergy- and energy-based …
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Exergy Methods for the Mission-Level Analysis and Optimization of Generic Hypersonic Vehicles
Though the field of hypersonic vehicle design is thriving again, few studies to date demonstrate the technology through a mission in which multiple flight conditions and constraints are encountered. This is likely due to the highly integrated and sensitive nature of hypersonic vehicle components. …
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High-Level CSP Model Compiler for FPGAs
… in stringent time-to-market goals and reduced design time available to engineers. Lesser design time has subsequently raised a need for high-level synthesis design methodologies that raise the design to a higher level of abstraction. Higher level of abstraction helps in increasing the …
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An Evolutionary Based Methodology for Representing and Evolving Structural Design Solutions
Performing synthesis during conceptual design provides substantial cost savings by selecting the structural topology and geometry of the design, in addition to selecting the member sizes. Traditional optimization methods, however, cannot synthesize design solutions that have diverse structural …
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Investigation of the Effects of Various Energy and Exergy-Based Objectives/Figures of Merit on the Optimal Design of High Performance Aircraft System
… analysis and optimization methods to the synthesis/design and operation an Advanced Aircraft Fighter (AAF) with three subsystems: a Propulsion Subsystem (PS), an Environmental Control Subsystem (ECS), and an Airframe Subsys-tem - Aerodyanmics (AFS-A) is used to illustrate these advantages. …
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