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 612 for “"Sizing"”.
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Right sizing for government review
The U.S. Navy has changed many of its acquisition practices. One of these changes is from performing the early design work primarily in-house, to contracting private shipyards to do the design. This change has shifted the government's role in design to a predominantly review function. Therefore, …
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CHEETA aircraft sizing, performance, and sensitivity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Laser diffraction particle sizing : sampling and inversion
The inverse problem of obtaining particle size distributions from observations of the angular distribution of near forward scattered light is reexamined. Asymptotic analysis of the forward problem reveals the information content of the observations, and the sources of non-uniqueness and instability …
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Propulsive Battery Packs Sizing for Aviation Applications
<p>This thesis derives analytical methods for sizing the propulsive battery packs for designing an electric-driven aircraft. Lithium-Ion (Li-Ion) battery is the primary choice of battery cell chemistry in this thesis research due to its superior specific energy and market availability. The …
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Sizing Tool for Quadrotor Biplane Tailsitter UAS
… including: a QBT weight model, preliminary sizing framework, and vehicle analysis tools. The preliminary sizing tool presented here shows the advantage afforded by QBT designs in missions with aggressive cruise requirements, such as offshore wind turbine inspections, wherein transition from …
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Uncapacitated Lot-Sizing Problems With Setup Interactions
Lot-sizing problems focus on determining a minimal total production cost schedule. These production costs are generally composed of three components: a variable production cost, an inventory holding cost, and a setup cost. The optimal solution balances the holding costs against the setup and …
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Laser diffraction particle sizing : sampling and inversion
Thesis (Ph. D.)--Joint Program in Oceanographic Engineering (Massachusetts Institute of Technology, Dept. of Ocean Engineering; and the Woods Hole Oceanographic Institution), 1987.
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Lot-sizing in the wood furniture industry
We consider the problem of scheduling production in a wood furniture plant. In particular, we consider the problem of selecting orders from various types of furniture products and determining their lot-sizes for production when there are sequence dependent setup times involved in the production of …
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Optimal Sizing and Control of Hybrid Rocket Vehicles
… to fuel ratio in order to perform an optimal sizing of the rocket.</p>
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Performance envelopes for preliminary sizing of aircraft structures
… structural design are loads development and sizing. The first deals with the development of all the load cases that an aircraft may encounter in service, whereas the latter is responsible for the design of the structural components required to carry the predicted loads.<br/><br/>A significant …
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Microfluidic diffusional sizing at the single molecule level
… the single-molecule microfluidic diffusional sizing (sm-MDS) platform and demonstrates its capabilities at performing diffusional sizing at picomolar sensitivity. Microfluidic diffusional sizing (MDS) is a robust, in-solution method to measure hydrody- namic radii (Rhyd) of particles. The …
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Lot sizing in multi-level multi-echelon inventory system
Typescript (photocopy).
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Incorporating cycle time uncertainty to improve railcar fleet sizing
This thesis involves railcar fleet sizing strategies with a specific company in the chemical industry. We note that the identity of the company in this report has been disguised, and some portions of the fleets have been omitted to mask their actual sizes. However, all analysis in this thesis was …
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Turbofan engine sizing and tradeoff analysis via signomial programming/
… is integrated with a simple commercial aircraft sizing model. The turbofan model is validated against the Transport Aircraft System OPTimization turbofan model as well as two Georgia Tech Numerical Propulsion System Simulation turbofan models. Four integrated engine/aircraft parametric studies …
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Direct-Current Power Flow Solvers and Energy Storage Sizing
… This thesis also deals with the task of sizing ESS under a model predictive control (MPC) operation for a single ESS used to smoothen out a random energy signal. To account for correlations in the energy signal and enable charging adjustments in response to real-time fluctuations, we …
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Fit and sizing evaluation of limited-use protective coveralls
… a recommendation for revision of current sizing specifications has been made by the Industrial Safety Equipment Association (ISEA). The purpose of this research was to evaluate the fit of limited-use protective clothing manufactured to the proposed size revision of ANSI/ISEA 101-1985 Men’s …
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Discrete Gate Sizing Methodologies for Delay, Area and Power Optimization
… In this work, we first study of the gate sizing problem for today's industrial designs, and explore the contributions and limitations of all the existing approaches, which mainly suffer from producing only continuous solutions, using outdated timing models or experiencing performance …
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Power system sizing and analysis for electric aircraft conceptual design
… development of a suggested methodology for the sizing of an electrical power generation, distribution, and propulsion system for electric airplanes at the conceptual design level. Considerations for machine type, energy storage technology, volume packaging, and modeling are discussed. The …
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Optimal sizing of hybrid renewable energy systems for rural electrification
… feasibility assessment and recommendations of sizing of hybrid renewable energy systems in rural areas in South Africa. This involves the development of a tool which would analyse information input about the climate of the area and the load demand.
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