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 471 for “"Optimization techniques"”.
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Optimization Techniques for Image Restoration
Many fields of study use images to make discoveries about the past, decisions for the present and predictions for the future. Images often acquire degradations such as a blur due to a patient moving during an x-ray or noise picked up through remote sensing imaging equipment. Images may also lose …
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Memory optimization techniques for embedded systems
… systems have become ubiquitous and as a result optimization of the design and performance of programs that run on these systems have continued to remain as significant challenges to the computer systems research community. This dissertation addresses several key problems in the optimization of …
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Optimization Techniques for Instream Flow Allocations
… control or economic efficiency. The constrained optimization approach used combines an implicitly stochastic modeling technique for surface reservoirs known as the linear decision rule (LDR) with an objective function representing the instream value of reservoir releases to downstream fisheries. …
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Spatial Optimization Techniques for School Redistricting
… In this dissertation, we propose algorithmic techniques for solving the problem of (school) redistricting, which is an NP-hard problem. We primarily investigate optimization-based algorithms for solving the problem. Our approaches include (i) clustering, (ii) local search, and (iii) memetic …
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Optimization Techniques for Complex Multi-query Applications
… essential in these applications. Multiple query optimization (MQO), which aims to identify the CSEs among multiple queries and exploit them to reduce the overall query evaluation cost, has been extensively studied for over two decades. In this thesis, we present novel MQO techniques that are …
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Optimization Techniques for Trustworthy 3D Object Understanding
… optimality conditions of the non-convex optimization problem to a nonlinear eigenproblem in the quaternion representation of orientation. We use self-consistent field iteration to efficiently arrive at a local stationary point, finding solutions more than an order of magnitude faster than …
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Register allocation and optimization techniques in compiler construction
… the implementation of register allocation and optimization techniques used in the process of compiler construction. The implementation issues were investigated by choosing an architecture and examining various register allocation and optimization techniques. In choosing the techniques to be …
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Design of Low-Order Controllers using Optimization Techniques
… been to provide simple tuning procedures, either optimization-based methods or tuning rules, for design of low-order controllers. The first part of this thesis deals with PID tuning. Design methods or both SISO and MIMO PID controllers based on convex optimization are presented. The methods …
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Compiler Optimization Techniques for Scheduling and Reducing Overhead
… develops and evaluates several compiler optimizations aimed at improving the performance of loops on processors. An important feature of a class of scientific computing problems is the regularity exhibited by their access patterns. Chapter 2 presents an approach of optimizing the address …
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Multi-objective optimization techniques in electricity generation planning
… is to develop a framework of multi-objective optimization (MOO) models that are better capable of providing decision support on future long-term electricity generation planning (EGP), in the context of insufficient electricity capacity and to apply it to the electricity system for a developing …
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Data visualization and optimization techniques for urban planning
… we describe a number of data visualization and optimization techniques for urban planning. Many of these techniques originate from contributions to the Social Computing Group's "You Are Here" project, which publishes maps intended to be viewed as a blend between art and urban planning tools. In …
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Prediction and optimization techniques to streamline surgical scheduling
… of software: a prediction tool and a schedule optimization tool. The prediction tool predicts time that is available each day between one and three weeks in advance to accommodate wait list cases, and the schedule optimization tool automates the consolidation process for all cases that are …
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Behavior-driven optimization techniques for scalable data exploration
… visualization experience. This thesis blends optimization techniques from databases and methodology from HCI and visualization in order to support interactive and iterative exploration of large datasets. Our main goal is to reduce latency in visualization systems, i.e., the time these systems …
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Continuous Low-Thrust Trajectory Optimization: Techniques and Applications
Trajectory optimization is a powerful technique to analyze mission feasibility during mission design. High-thrust trajectory optimization problems are typically formulated as discrete optimization problems and are numerically well-behaved. Low-thrust systems, on the other hand, operate for …
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Optimization Techniques Exploiting Problem Structure: Applications to Aerodynamic Design
… a Reduced Hessian formulation which projects the optimization problem to a lower dimension design space. The second method exploits the sparse structure in a given problem which can yield significant savings in terms of computational effort as well as storage requirements. An underlying theme in …
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Optimization Techniques for Minimizing Energy Consumption in Approximate Circuits
This work presents different global and local optimization techniques for designing "approximate" circuits which decrease energy consumption, one of the most important criteria in present day circuit design. The concept of "approximate" circuits which trades off energy consumption to output …
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Circuit modeling and optimization techniques for next-generation radar.
… The first goal is to demonstrate circuit optimization algorithms implemented in real-time with two types of fast tuners. The optimization algorithms can tune the fundamental tuning elements of the tuner to quickly find an efficient operating point for the power amplifier while staying …
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Robust optimization techniques and design of Li-ion batteries
This thesis applies robust optimization techniques to the design of Lithium-ion batteries with spatially varying porosities. The microstructure of a porous electrode was designed to minimize the Ohmic resistance. The spatial variation in the porosities was found to provide enhanced robustness of …
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Optimization techniques for human computation-enabled data processing systems
… the systems-building, operator design, and optimization challenges involved in building a crowd-powered workflow management system. We describe a system called Qurk that utilizes techniques from databases such as declarative workflow definition, high-latency workflow execution, and query …
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Design Optimization Techniques for Time-Critical Cyber-Physical Systems
… complex, there is an urgent need for efficient optimization techniques that can aid the design of large-scale systems. Specifically, techniques that can find good design options in a reasonable amount of time while meeting all the timing and other critical requirements are becoming vital. …
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