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 296 for “"Design problems"”.
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Search Strategies in Holistic Design Problems
… research examines the search process of holistic design in three cases that differ markedly in their complexity, namely graphical design, small household appliance design, and automotive design. Design, as a creative activity, employs a search process because solutions cannot be found by …
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Network design problems for improving facility locations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1989.
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Node-weighted prize-collecting survivable network design problems
We consider node-weighted network design problems, in particular the survivable network design problem SNDP and its prize-collecting version PC-SNDP. The input consists of a node-weighted undirected graph $G=(V,E)$ and integral connectivity requirements $r(st)$ for each pair of nodes $st$. The goal …
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Concept generation methods in highly constrained design problems
… in engineering solutions, yet engineers and designers must also grapple with complex design problems which are highly constrained by requirements, regulations, and limited resources. This research seeks to understand the relationship between design constraints and concept generation methods …
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The Application Of Object-oriented Techniques To Preliminary Design Problems
Preliminary structural design is an early stage in building design during which the engineer formulates and assesses a number of different structural schemes. It is conceptual in nature and involves decision making, which relies on heuristics. Whilst preliminary structural design has not been well …
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Algorithmic results on physical design problems in VLSI and FPGA
Various physical design problems in Very Large Scale Integrated (VLSI) circuits and Field-Programmable Gate Arrays (FPGA) are studied in this thesis. Specifically, we study (1) the area minimization problem in floorplans with L-shaped modules; (2) the channel routing problem in the single layer …
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Survivable network design problems with element and vertex connectivity requirements
… element-connectivity Survivable Network Design Problem (Elem-SNDP) and degree-bounded Rooted k-outconnectivity Problem. We suggest bicriteria approximation algorithms that are motivated by Ene and Vakilian's work in [1] and Lau and Zhou's work in [2]. The algorithm follows the iterated …
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Formulations and algorithms for network design problems with connectivity requirements
Thesis (Ph. D. in Operations Research)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Informing decision-making in single-objective, mixed-variable design problems
Data-driven decision-making in mixed-variable design problems presents a variety of challenges and opportunities, especially in the increasingly data-rich field of emissions in architectural and structural design. Designers can benefit from an underlying knowledge about, for example, whether …
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Modeling and evaluation of design problems in a network-centric environment
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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A Hermite Cubic Immersed Finite Element Space for Beam Design Problems
… for numerical simulations arising from beam design with multiple materials. This IFE space is based upon meshes that can be independent of interface of the materials used to form a beam. Both the forward and inverse problems associated with the beam equation are considered. The order of …
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Tackling the ‘right’ problem: Investigating cognitive strategies used in understanding design problems
… and creative solutions. Current engineering and design research has primarily focused on the generation of ideas, and little research has investigated how engineering designers engage in identifying and refining problem definitions, a process called “problem exploration.” Past research has …
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An effective optimisation method for multifactor and reliability-related structural design problems
This thesis first presents a systematic design procedure which satisfies the required strength and stiffness, and structural mass for conceptual engineering structural designs. The procedure employs a multi-objective and multi-disciplinary (MO–MD) optimisation method (multifactor optimisation of …
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Design problems in crowdsourcing: improving the quality of crowd-based data collection
… modeling and better collection-time design decisions. Crowd-contributed data is affected by many inconsistencies that differ from automated processes: differences in attention, interpretation, skill, and engagement. The types of tasks that we require of humans are also more inherently …
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Fundamental design problems of distributed systems for the hard-real-time environment
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1983.
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Global Optimization of Nonconvex Factorable Programs with Applications to Engineering Design Problems
… to solve a class of nonconvex programming problems, and to test it using a collection of engineering design problem applications.The class of problems we consider involves the optimization of a general nonconvex factorable objective function over a feasible region that is restricted by a …
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Optimization Models and Analysis of Routing, Location, Distribution, and Design Problems on Networks
A variety of practical network optimization problems arising in the context of public supply and commercial transportation, emergency response and risk management, engineering design, and industrial planning are addressed in this study. The decisions to be made in these problems include the …
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Optimal design problems for quasidisks and partially clamped drums: Existence, symmetrization, and numerical methods
… its extrema over each of these classes. The design problem of extremizing the fundamental tone of a drum fastened only on a fraction of the boundary is considered. The special case of minimizing the fundamental frequency of a circular drum is solved using symmetrization. The gradient of the …
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Generative Adversarial Networks for Inverse Design Problems in Engineering: Methods to handle performance, constraints, and creativity requirements
Engineering design tasks often require synthesizing new designs that meet desired performance requirements. The conventional design process, which requires iterative optimization and performance evaluation, is slow and dependent on initial designs. Automating this process in its entirety, therefore …
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