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 17 of 17 for “"optimal replacement"”.
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Decision Support Tool for Optimal Replacement of Plumbing Systems
… among all subscribers. The home plumbing repair/replacement cost and possible water damage cost must be addressed by the home owner. There are also issues of the value of home, insurance rates, health consequences, and taste and odor problems. These issues have become major concerns to home …
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An optimal replacement-design model for a reliable water distribution network system
… over time, these pipes need to be considered for replacement. Meanwhile, increasing urban development and water use rates dictate the need for larger and larger pipes to handle increased flow rates, while keeping water pressure within an acceptable range. However, larger pipes cost considerably …
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Optimal replacement in the proportional hazards model and its applications in a product-service system
… consists of three papers, in which the optimal replacement policies for systems whose deterioration process follows the PHM are developed under different settings; and a joint optimization of the asset and inventory management problem in the context of a product-service system is …
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An Optimal Pipe Replacement Scheduling Model for Water Distribution Systems
… rate equation gives a rule of thumb for pipe replacement decision. Input parameters to obtain the threshold break rate of a pipe are repair and replacement costs, interest rate, and the length of the pipe. In addition, a methodology that enables the use of threshold break rate with the failure …
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An Assessment and Modeling of Copper Plumbing pipe Failures due to Pinhole Leaks
… A probabilistic model is presented to evaluate optimal replacement time for plumbing systems. Methodologies for mechanistic modeling based on corrosion thermodynamics and kinetics are presented.
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Life Data Analysis of Repairable Systems: A Case Study on Brigham Young University Media Rooms
… the failure rate of such systems, predict the optimal replacement time for the parts with the view of maximizing the reliability of the systems and finally formulate a cost model that will be used to estimate the optimal cost involve in servicing a failed projector.
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Reliability Analysis of Boeing's Dreamlifter Large Cargo Freighter
… relatively small data sets, provide insight into optimal replacement intervals, and help prioritize risk management targets. We also share recommendations for successful project continuity.
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A Comprehensive Decision Support System(CDSS) for Optimal Pipe Renewal using Trenchless Technologies
… a deteriorating water main be replaced at an optimal time instead of continuing to repair it. In addition, expanding business districts, indirect costs, and interruptions including protected areas, waterways and roadways require examination of trenchless technologies for pipe installation. In …
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Improving cache replacement policy using deep reinforcement learning
… of reinforcement learning approaches to improve replacement policies of caches. In today's internet, caches play a vital role in improving performance of data transfers and load speeds. From video streaming to information retrieval from databases, caches allow applications to function more …
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Effects of pelleting millet-based diets on the performance of broiler chickens
… methods (grinding and pelleting) and three replacement levels (50%, 75% and 100%). A commercial finisher pelleted diet was used as a positive control. The first experiment investigated the effects of pelleting on nutritional composition of broiler diets when maize was replaced with PM at …
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Performance of composite sand cement brick containing recycled concrete aggregate and waste polyethylene terepthalate
… (PET) waste bottles as sand aggregate replacement. RCA was obtained from crushed laboratory concrete cubes while PET bottles were collected around UTHM and Parit Raja areas. The objectives of this study are to determine the optimum cement-sand ratio (1:5, 1:6 and 1:7) for composite …
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Design and analysis of spatially-partitioned shared caches
… to minimize data movement. Second, analytical replacement policies make better use of scarce cache capacity, reducing expensive main memory accesses: Talus eliminates performance cliffs by guaranteeing convex performance, and EVA uses planning theory to derive the optimal replacement metric …
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Application of Geographic Information System and Probabilistic Analysis for Water Pipeline Renewal Prioritization
… system to implement the analysis and provide optimal replacement schedules to decision makers and city planners, but also a user-friendly system with the developed GUIs in ArcGIS.
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A Mechanistic Analysis Based Decision Support System for Scheduling Optimal Pipeline Replacement
… cost of restoring the failed pipe. The cost of replacement and rehabilitation in the United States is estimated at 23 plus billion dollars. It is virtually impossible to replace all vulnerable pipes at the same time. As a result, there is a need for methods that can help in progressive system …
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The optimization of plant protein meat re-placers and clean label water binders in processed meat (white pudding and chicken)
… vegan product, or failing this, identifying the optimal replacement level that was acceptable to consumers and would not compromise on technological quality. The technological, compositional and sensory quality of the samples were analysed. Replacement was performed in 10% increments from 10% to …
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Essays on the economics of local labor markets
… Kroft, studies theoretically and empirically how optimal Unemployment Insurance (UI) benefits vary with local labor market conditions. Theoretically, we derive the relationship between the moral hazard cost of UI and the unemployment rate in a standard search model. The model motivates our …
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Investigation of polyhydroxyalkanoate production by an activated sludge microbial consortium treating artificial dairy wastewater
… of microbial polyesters, widely considered as optimal replacement polymers, are the Polyhydroxyalkaonates (PHAs). Primary research in this area has focused on using recombinant pure cultures to optimise PHA yields, however, despite considerable success, the high costs of pure culture …