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 27 for “"Wear out"”.
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Fault sensitivity and wear-out analysis of VLSI systems
… approaches to conduct fault sensitivity and wear-out failure analysis of VLSI systems. A fault-injection approach to study transient impact in VLSI systems is developed. Through simulated fault injection at the device level and subsequent fault propagation at the gate, functional and software …
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Green Improvements: A Consumer's Guide to Environmentally and Economically Responsible Home Repairs and Improvements for the North Central Texas Region
… tend to purchase quickly when their older models wear out and with little research into their energy and/or water efficiency. The guide begins with a general introduction and an explanation of the need for energy conservation. Explanations of how they work, purchasing tips, installation tips, …
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Modeling of a Single-Phase Liquid Cooling System for Power Electronics Applications
… system under ideal conditions as well as various wear out conditions (e.g. channel blockage, erosion of channel walls). Properties of used 50/50 ethylene glycol water coolant were evaluated to discover additional causes of reduced thermal performance. After completing the cooling system evaluation …
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Quantitative Determination of Acetylsalicyclic Acid and Acetaminophen by Q-NMR (Quantitative Nuclear Magnetic Resonance) Technique
… the chromatographic columns and the instruments wear out. On the other hand, Nuclear Magnetic Resonance (NMR) technique is mainly used for qualitative analysis to determine the identity of compounds. However, Proton-NMR technique does provide quantitative information of compounds but to develop a …
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Managing Many-Core Aging
… dd for a month or so each, until they completely wear out. Our simulations show that a 32-core BubbleWrap many-core provides substantial improvements over a plain chip. For example, on average, one design runs fully sequential applications at a 22% higher frequency, and fully parallel applications …
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Polyurethane inserts for comfort and injury prevention while dancing en pointe
… 6 mm/s in order to ensure that they would not wear out and become unusable. Inserts were also molded to the foot of a semi-professional dancer and tested to measure the force on the hallux. Using a polyurethane insert, this force was reduced to less than 10% of a ballerina's body weight. This …
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Coupling the effects of rubber aging and wear and studying its effect on motorcycle performance
… simulation models to predict how much the rubber wears out over time. It was found that as rubber gets older it doesn't wear out much faster. This might be because the changes in the rubber properties as it ages are very small. The rubber material also gets stiffer as it ages, leading to minimal …
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Predictive Modeling for Assessing the Reliability of Bypass Diodes in Photovoltaic Modules
… to facilitate widespread use of solar energy without the need for subsidies. This dissertation is focused on frameworks for assessing reliability of bypass diodes in PV modules. Bypass diodes are critical components in PV modules that provide protection against shading. Failure of bypass diode in …
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Total Knee Arthroplasty Wear Is Caused by Malrotation and Excessive Laxity
… knee arthroplasty components will eventually wear out, causing rejection and necessitating the need for a replacement. For this reason, it would be beneficial to experts if the primary causes of this wear could be identified in order to minimize the number of replacements.</p> <p>This study …
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An improved reliability assessment of a modular robot controller
… A new framework to monitor and predict hardware wear-out in real-time. The author identifies simple, quality metrics such as reliability and availability. These metrics are intimately connected to the customer experience. Additionally, this thesis outlays how to translate these customer-driven …
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Tecniche di progettazione tollerante alle variazioni per circuiti digitali in tecnologie nanometriche
… and frequently thermal cycles, are speeding up wear out processes. Those effects are no longer addressable only at the process level. Consequently the deep sub-micron devices will require solutions which will imply several design levels, as system and logic, and new approaches called Design For …
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The development of hydraulic ram for village use in developing countries : a dissertation submitted for the degree of Diploma in Natural Resources, Lincoln College and University of Canterbury
… (a) replacement of the rubber valves if they wear out, (b) adjusting the 'tuning' of the waste valve. Occasionally, the ram is dismantled for cleaning. It is important to prevent the debris, leaves and branches from entering the ram by using strainer at the intake of water.
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Mechanical Analyses of Multi-piece Mining Vehicle Wheels to Enhance Safety
… assembly, geometry degradation (material wear out at critical regions) and material degradation (fatigue and corrosion) were studied to estimate their effects on fatigue lives. Two design innovations were proposed to enhance safety and fatigue life of the five-piece wheel. The …
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Rolling contact orthopaedic joint design
… to replace bone and articular cartilage often wear out too soon, leading to significant morbidity. This thesis explores the use of kinetic-mimicry, instead of bio-mimicry, to design prosthetic rolling contact joints, including knee braces, limb prosthetics, and joint prostheses, with the intent …
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Understanding and circumventing censorship on Chinese social media
… Users deliberately self-censor their speech out of caution, because they do not have a clear understanding of what content is being censored and what risks are associated with censorship on Chinese social media. Although on-platform effects of censorship are present on social media usage …
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Built-in controller for self-test and repair of 3D integrated Nand flash memory chip, used in radiation intense space environment
… and dependable. Research is continuously carried out on making storage systems vast and reliable. The development of 3D integration has spawned the idea of a new generation of memory based on 3D stackable chips. In an era where there is a continuous demand for larger, faster, denser and robust …
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Low-cost error detection through high-level synthesis
… challenges including logic bugs, hot spots, wear-out, and soft errors. To make matters worse, as we reach the limits of Dennard scaling, efforts to improve system performance and energy efficiency have resulted in the integration of a wide variety of complex hardware accelerators in SoCs. …
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Performance of reduced-scale Vortex amplifiers used to control glovebox dust
… devices lack. Fluidic devices will not easily wear out, they have a relatively fast response and in some cases they may be cheaper than an equivalent conventional device. Most importantly, they have fewer moving parts (usually none) so are inherently reliable, so long as the fluidic design is …
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Multi-wavelength, multi-beam, photonic based sensor for object discrimination and positioning
… use as an active optical sensor for indoors and outdoors perimeter security. A laser scanning technique with moving parts was tested in the British Home Office - Police Scientific Development Branch (PSDB) in 2004. It was found that laser scanning has the capability to detect humans in 30m range …
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Reliability Studies of TiN/Hf-Silicate Based Gate Stacks
… IL degradation triggers gate stacks BD, and the wear-out during TDDB.
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