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 24 for “"Hybrid optimization"”.
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Hybrid optimization in traffic networks
Thesis: M.S., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 1979
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Hybrid-optimization scheme for low-thrust trajectory design to the lunar gateway
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01
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A Hybrid Optimization Framework with POD-based Order Reduction and Design-Space Evolution Scheme
… multi-disciplinary design, analysis and optimization suite that integrates certain solution generation codes and newly developed innovative tools to improve the overall optimization process. The research performed herein is divided into two parts: (1) the development of an MDAO framework …
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Generative design algorithms in topology optimization of passive heat spreaders
… the execution of this framework. Topology optimization methods are now the state of the art for heat spreader design. These methods are introduced herein and are used to benchmark solutions obtained through generative design methods. The generative design methodology augments the existing …
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Integrated optimization of hybrid steam-solvent injection in post-CHOPS reservoirs with wormhole networks and foamy oil behaviour under uncertainty
… oil lead to a higher oil recovery than expected. Hybrid steam-solvent injection has been considered as the most effective recovery method for heavy oil reservoirs; however, the existence of wormhole networks makes it technically and operationally challenging and foamy oil may be artificially …
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Design analysis of potential grid connected floating photovoltaic system in UTHM
… distortion (THD), current and voltage waveforms. Hybrid Optimization Model for Electric Renewable (HOMER) software has been used to obtain results such as the net present cost (NPC), cost of operation (COE), CO2 emissions impact and the payback period of the grid connected FPV system. The FPV …
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The Electricity Crisis in Nigeria : Building a New Future to Accommodate 20% Renewable Electricity Generation by 2030
… this lofty goal, and as well determine the best hybrid configuration for off-grid rural/remote power generation across the six geopolitical zones of Nigeria.<br/><br/>The economic feasibility results, using Long-range Energy Alternative Planning (LEAP) tool, show that the 20% renewables goal in …
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Hybrid System Identification of Manual Tracking Submovements in Parkinson's Disease
… We focus on characterizing submovements through Hybrid System Identification, in which the dynamics of each submovement, the mode sequence and timing, and switching mechanisms are all unknown. We describe an initialization that provides a mode sequence and estimate of the dynamics of …
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Optimal distribution network reconfiguration using meta-heuristic algorithms
… systems topology is an NP-hard combinatorial optimization problem. It becomes more complex when time varying nature of loads in large-scale distribution systems is taken into account. In the second chapter of this dissertation, a systematic approach is proposed to tackle the computational …
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A hybrid crow search-based method for solving the closed loop supply chain network design
This thesis develops a hybrid optimization framework for large-scale facility location and Closed-Loop Supply Chain Network Design (CLSCND). The main contribution is a decomposition-based method that combines a Binary Crow Search Algorithm (BinCSA) with Mixed-Integer Linear Programming (MILP) exact …
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Feeder reconfiguration on distribution network considering harmonics
… with distributed generators. Following this, a hybrid optimization method is proposed based on the salient features of the ant colony system and particle swarm optimization. This hybrid method has a higher searching accuracy performance for feeder reconfiguration when compared, on test system, …
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ENAMS: Energy optimization algorithm for mobile wireless sensor networks using evolutionary computation and swarm intelligence.
… thesis contributes toward the design of a new hybrid optimization algorithm; ENAMS (Energy optimizatioN Algorithm for Mobile Sensor networks) which is based on the Evolutionary Computation and Swarm Intelligence to increase the life time of mobile wireless sensor networks. The presented …
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Influence of agglomeration phenomenon in machining of AISI D2 hardened steel using nano chromium powder mixed-EDM
… (ANOVA)-Response Surface Methodology (RSM), as hybrid optimization, boosted the composite desirability of Multiple-Response optimization produced by RSM from 0.6153 to 0.9997. Moreover, this hybrid technique has determined IP = 10 Amps, Ton = 30 μs, and PC = 2 g/L; IP = 20 Amps, Ton = 20 μs, and …
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Integrated Design of Complex Mechanical Products Considering Modeling, Simulation and Optimization Aspects
… considering modeling, simulation/evaluation, and optimization aspects. An integrated system for design of complex mechanical products has also been developed. In this system, first a hybrid scheme is introduced for integrated modeling of complex mechanical products considering conceptual design …
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Optimization of the holographic process for imaging and lithography
… systems is followed by a need for efficient optimization tools designed for maximizing the performance of the optical system. In this thesis, a variety of multi-domain optimization tools designed to improve the performance of holographic optical systems are proposed. These tools are designed …
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Toward enhancement of evolutionary multi- and many-objective optimization: algorithms, performance metrics, and visualization techniques
… last three decades, the focus of multi-criteria optimization has been solving problems containing two or three objectives. However, real-world problems generally involve multiple stakeholders and functionalities requiring relatively large number of objectives and decision variables to model these …
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Molten Regolith Electrolysis reactor modeling and optimization of in-situ resource utilization systems
… system, and other systems, is leveraged in a hybrid optimization scheme to study the optimal system design and performance characteristics. The optimized models predict that a 400 kg, 14 kW MRE-based ISRU system can produce 1,000 kg oxygen per year from lunar Highlands regolith. A 1593 kg, …
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Advances in aircraft design: multiobjective optimization and a markup language
… front approximation method for multiobjective optimization problems. The method employs a hybrid optimization approach using two derivative free direct search techniques, and is intended for solving blackbox simulation based multiobjective optimization problems with possibly nonsmooth functions …
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Decomposition-based, complementarity models for renewable energy generation system design optimization
… system design. Decomposition-based design optimization techniques provide the theoretical and computational framework for implementing such design processes. Existing models in the decomposition-based design optimization literature lie largely within the realm of nonlinear programs (NLP). …
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