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.
Results
Showing 1 to 20 of 245 for “"to cut"”.
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Self-propelled rotary tool for turning difficult-to-cut materials
Hard turning of difficult-to-cut materials is an economical method of machining components with high surface quality and mechanical performance. Conventionally in the machining industry, generating a component from raw goods includes a casting or forging process, rough machining, heat treatment to …
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Towards sustainable machining of difficult-to-cut materials using nano-cutting fluids
… are two essential requirements in order to achieve sustainable machining processes. One of the major sustainable machining concerns is the implementation of cutting fluids due to its significant impact on the machining quality characteristics. In addition, several economic, environmental, …
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The effort to cut out-of-pocket medical expenses and the political constraints : examples from the New Cooperative Medical Scheme in China
… The thesis first uses quantitative methods to identify the statistical relationships between NCMS and rural OOP and finds that enrolling in NCMS is associated with higher OOP. Then, using the 2009 reform, also known as Healthy China 2020, as a starting point, the thesis further explores the …
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Emissões de gases fluorados causadores de efeitoestufa: desenvolvimento e análise de cenários para o Brasil até 2050
… Although, presently less than 2% a year, the total global emissions of these compounds have been growing sharply in the last years. This study aims to elaborate scenarios for fluorinated greenhouse gas (HFC, PFC and SF6) emissions in Brazil up to 2050, and to evaluate potentials and costs of …
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Three dimentional control of a diode based laser cutter
Laser cutting is a widely used technology in many areas of industry and research. Conventional laser cutters only offer control of two axes and either cut through a material or rudimentary control of the third dimension is possible by varying the power, pulse rate and travel rate of the laser beam. …
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Mechanisms Associated with Attachment of Escherichia coli O157:H7 to Lettuce Surfaces
… associated with foodborne outbreaks. In order to develop effective intervention and measures to reduce microbial risks, it is essential to attain a better understand the mechanisms of attachment of foodborne pathogens to fruits and vegetables. Using lettuce as a model, the attachment of …
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Applications of RAPD Markers in Soybean: Genetic Diversity and Linkage Analysis
To determine the efficacy of the pollen tube pathway transformation procedure plasmids carrying the bar and gus genes were applied to cut stigmas. Approximately 5000 seeds were produced from treated flowers. No plants derived from seeds produced by flowers treated with the plasmid carrying the bar …
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High pulse repetition frequency XeCl laser and its applications
… frequencies (prf) >1kHz. The use of this laser to cut polymer films by ablative etching is also presented.The device uses a closed-cycle gas flow loop, constructed from stainless-steel for corrosive gas compatibility, and a total volume of 6 litres and a working pressure of 4 atmospheres. A …
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The Intuition of Knowing: Its Biological Function and Natural Triggering-Conditions
… competing and incompatible positions in relation to basic problems of knowledge and the use of the verb ‘to know’ have multiplied; and the prospect of a consensus solution emerging with respect to any of the problems has not seemed particularly good. We have a Gordian knot. Even so, I suggest that …
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Two Tier Hybrid Routing Schemes for Vehicular Ad Hoc Networks Based on Reinforcement Learning
… the issue of routing messages from vehicles to specific geographical locations in VANETs. To overcome this challenge we propose a hybrid system consisting of traffic-aware located RSUs and a reinforcement learning routing strategy. Our proposed method includes two main tiers. We first divided …
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Nationalization as an economic tool
… it can become difficult for fruitful discussion to emerge and real debate can be stifled. The nationalisation of mines in South Africa is a discussion that has been debated in such an environment. The aim of this dissertation is to cut through the political posturing and get to the fundamental …
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Reduction of process monitoring in semiconductor chip manufacturing
… inspection scheduling policies in semiconductor chip manufacturing. Intel uses extensive monitoring (inspections) in the manufacturing process. While the inspections help safeguard process stability and boost manufacturing yield, they also account for a substantial fraction of the company's …
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Functional thinking in cost estimation through the tools and concepts of axiomatic design
… been an increasing demand for cost estimation tools which aid in the reduction of system cost or the active consideration of cost as a design constraint. The existing tools are currently incapable of anticipating the unseen or latent effects of design changes made in an effort to cut cost. This …
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An investigation into indigenous knowledge practices on environmental conservation among the Batswana in the North West Province : the case of Taung
… the North West Province, with special reference to Taung. The study found the following aspects: (i) The Taung area has a diversity of indigenous biological resources, such as lengana, ditlhekwa, tlhoka la tsela, etc. Most of the Batswana in Taung especially the elderly are of. (ii) Due to …
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A Community In Motion: A Multimodal Transit and Waterfront Activity Center at the University of Washington
… communities. As urban centers continue to grow, they are increasingly looking to new or expanding systems of mass transit in order to cut down on congestion in crowded urban streets. These systems are integral to moving a city’s population on a daily basis, but are absent in typical …
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Genetic Evaluation and Parameter Estimation Using Marker and Trait Information
… QTL. Maximum likelihood methods are widely used to estimate genetic parameters. This thesis presents a new approximation to the likelihood for a pedigree with loops, based on cutting all loops and extending the pedigree at the cuts. An optimum strategy to cut loops and an iterative extension …
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A three axis CNC router design
… the advantages of numerically controlled machine tools to the woodshop. To reduce cost, a novel single rail design was employed. The number of custom parts was kept to a minimum and, where necessary, every effort was made to minimize manufacturing cost. The novel features of the design include …
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Design of a chain flail mower for leveling rough terrain
… uses bladed attachments rotating around a drum to cut down bushes and grassy terrain. One major drawback to the flail mower is the rapid wear that happens almost immediately when any sort of rocks, gravel, or rough terrain are encountered. The goal of this project was to design and manufacture a …
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Moving forward equitably? : analyzing the impact of transportation changes on Boston's neighborhoods
… Act of 1956 provided the funds for Massachusetts to build a system of highways that threatened to cut through various neighborhoods in the greater Boston area. A broad coalition of people put a stop to these plans in 1972, and advocacy at the federal level allowed for highway funds to be shifted …
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Polyethylene fiber drawing optimization
… thermal conductivity and strength compared to bulk polymer because drawing aligns the molecular chains. I optimize the polymer fiber drawing method in order to achieve polymer fibers that are drawn to lengths exceeding 1cm and develop a method to cut and store them for future experimental …
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