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Spatial Information Grid (SIG) is a spatial information infrastructure that has the capability of providing services on-demand. It provides a new distributed computing pattern for sharing and operating the massive distributed spatial information resources. The global spatial data directory is an information tree organization used to quickly locate spatial data resources and spatial database nodes...
This paper proposes a fuzzy linear programming (LP) based solution approach for the long term multistages best generation mix (BGM) problem considering wind turbine generators (WTG) and solar cell generators (SCG), and CO2 emissions constraints. The proposed method uses fuzzy set theory to consider the uncertain circumstances ambiguities associated with budgets and reliability criterion level. The...
The importance of renewable energy sources has been growing at a high rate as a result of being environment friendly. In particular, wind energy is one of the most successfully utilized of such sources to produce electrical energy. Because of the randomness of wind speed, the two-state model used for modeling conventional generator is not suited for modeling wind turbine generators(WTG). Although...
As flash memory became popular over various platforms, there is a strong demand on the performance degradation problem, due to the special characteristics of flash memory. This research proposes the design of a file-system-aware flash translation layer, in which a filter mechanism is designed to separate the access requests of file-system metadata and file contents for better performance. A recovery...
MEMS (microelectromechanical system) reliability has been a very important issue, especially for safety-critical applications. Due to the diversity and multiple energy domains involved, MEMS devices are vulnerable to various failure mechanisms. MEMS reliability under different failure mechanisms should be analyzed separately. Since most of MEMS devices contain movable parts, material fatigue and aging...
MEMS (micro electromechanical system) yield and reliability have been a very critical issue. In our previous paper, the authors have proposed a self-repairable MEMS comb accelerometer device, and the yield analysis has demonstrated effective yield increase due to the BISR (built-in self-repair) design. In this paper, the authors developed a MEMS reliability model for quantitative assessment of the...
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