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 20 for “"Reliability Improvement"”.
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Distribution system reliability improvement using distributed generators
… Generator. Investigation will be done on reliability improvement for Distribution system by using this Distributed Generator. Distributed Generator installed at Station Solar Hybrid in Tanjung Labian will be investigate. The SAIDI used as the Indices to show the reliability improvement for …
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Reliability improvement and assessment of safety critical software
… method for ensuring high software quality and reliability is testing. An integrated methodology is developed in this thesis for reliability assessment and improvement of safety critical software through testing. The methodology is based upon input domain-based reliability modeling and …
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Reliability improvement project decision making : water cooling system redesign
Deciding on which reliability & performance improvement projects to launch or to reject has historically been an extremely challenging responsibility of Teradyne management. Incorrect decisions can lead to major customer dissatisfaction, which may subsequently lead to loss of market share. Teradyne …
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Risk Analysis and Reliability Improvement of Mechanistic-Empirical Pavement Design
<p>Reliability used in the Mechanistic Empirical Pavement Design Guide (MEPDG) is a congregated indicator defined as the probability that each of the key distress types and smoothness will be less than a selected critical level over the design period. For such a complex system as the MEPDG which …
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The analysis and synthesis of dependable digital systems.
… amongst other things, the performance of the reliability, maintainability, safety and performance of the system. The concept of a dependable system, is one which encompasses a sub-set, if not all, of the dependability factors, not just during its operation but throughout every stage of its …
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Investigation into low power and reliable system-on-chip design
… (MPSoC) with low power consumption and high reliability in the presence of soft errors will continue to increase. However, low power and reliable MPSoC design is challenging due to conflicting trade-off between power minimisation and reliability objectives. This thesis is concerned with the …
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Fine-grained fault-tolerance : reliability as a fungible resource
… and power consumption. Using this, we show that reliability can be a fungible resource, interconvertible with other physical resources in multiple, unusual ways, via fault-tolerant architectures. This thesis investigates the potentialities offered by a fault-tolerant design in devices whose …
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A Multi-layer Dependency Model for Analysis of Safety-critical Embedded Systems
… affordability. However, conventional safety and reliability engineering methods, including redundancy or conventional dependency analysis, often lead to expensive and complex system designs. In this work, we propose a multi-layer dependency framework to analyze safety-critical systems. This …
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Evolution des herbiers à Posidonia oceanica (L.) Delile dans la baie de Calvi (Corse, France) et influence de l’ancrage dans la baie de l’Alga
… better identification of the habitats and a map reliability improvement. In several places in the bay, especially near the waste waters rejection site, the lower limit of the meadow is shallower than in the past. The diminution of the meadow surface in the 21-30 m bathymetric section is more …
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Modelling of solder interconnection’s performance in photovoltaic modules for reliability prediction
… joint is carried-out towards thermo-mechanical reliability improvement. Analysis of results shows the design with optimal parameter setting to be: TIMC -2.5μm, TSJ -20μm and WSJ -1000μm. In addition, the optimized model has 16,264 cycles to failure which is 18.82% more than the expected 13,688 …
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Electric Distribution Reliability Analysis Considering Time-varying Load, Weather Conditions and Reconfiguration with Distributed Generation
… study of electric power distribution system reliability evaluation and improvement. Reliability evaluation of electric power systems has traditionally been an integral part of planning and operation. Changes in the electric utility coupled with aging electric apparatus create a need for more …
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Standard operating procedure for Highly Accelerated Life Testing (HALT) : design and standardization of fixture setup for circuit boards
… in a multinational corporation as part of a reliability improvement process for printed circuit boards (PCBs). More specifically, the thesis focuses on drafting a standard operating procedure (SOP) to standardize the fixture setup process so as to minimize variation in vibrational responses …
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Design and Analyses of a Dimple Array Interconnect Technique for Power Electronics Packaging
… materials, electrical and thermal performance, reliability, and the fabrication process of the DAI. It was found that due to the use of solder material, the current handling capability and thermal management of Dimple Array interconnected devices are significantly better than those using wire …
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Density Functional Simulations of Defect Behavior in Oxides for Applications in MOSFET and Resistive Memory
… suffers from Ge/oxide interface quality and reliability problems, which originates from the charge traps and defect states in the oxide or at the Ge/oxide interface. The sub-oxide layers composed of GeII states at the Ge/GeO2 interface seems unavoidable with normal passivation methods like …
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Cost of Electricity Interruption to Commercial and Industrial End-Users
… of electricity interruptions to suit value-based reliability planning and power system operations management. The cost assessment was done from the business customer’s viewpoint via a firm-level survey of commercial and manufacturing businesses in Cape Town. Three CIC models were developed from an …
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Simplified approach for the reliability estimation of large transmission and sub-transmission systems
Various specialised power system reliability modelling software are commercially available to analyse the expected performance of a utility’s transmission and sub-transmission network. The software requires a physical network model to be constructed, representing all network components. A high …
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Development of regional reliability hurdle rate for South Africa
… leading up to this thesis has been to develop reliability hurdle rates that include the effect of the IBR scheme implemented by the national regulator authority of South Africa. This will enable the network planner to compare the investment decision with the reward / penalty scheme. The thesis …
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Integration Challenges In High Power Density Wide Bandgap Based Circuits for Transportation Applications
… such as size reudcetion, costs saving, and reliability improvement, integration technologies have been widely adopted in power electronic systems, especially with the emergence of WBG semiconductor devices. These improvements will futher translate into reduced fuel consumption, extended …
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Robust and reliable hardware accelerator design through high-level synthesis
… complexity has resulted in a variety of reliability and validation 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 …
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Processing and Reliability Assessment of Solder Joint Interconnection for Power Chips
… packaging density, and performance, improved reliability and low cost these technologies offer. With all these benefits to offer, solder joint area-array technology has yet to be implemented for power electronics packaging. Therefore, the first objective of this study is to design and develop …