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The effect of gas phase Cd/Te deposition ratio on the minority carrier lifetime and doping concentration of polycrystalline cadmium telluride (CdTe) was investigated. CdTe thin films were deposited by the elemental vapor transport (EVT) with various Cd/Te gas phase ratios. The films were fabricated into solar cells, and characterized by current–voltage (JV) and spectral response measurements. The...
This paper develops a novel optimization scheme for multi-domain optical network protection under multiple probabilistic failures arising from large-scale disasters. The model is solved using an approximation approach and the results compared with some advanced heuristics.
The semantic web popularity is basis for the development of RDF stores. Benchmarks are being used to validate the performance claim of RDF stores. The existing studies measure the stores' performance only in terms of time and do not cover resource utilization, particularly the main memory, for data manipulation operations of RDF stores. Therefore, their provided information on semantic stores is limited...
Modern mobile devices support diverse applications that are enabled by rapid increase of computational power of mobile platforms. A brisk performance evaluation phase is required after the application modelling to evaluate feasibility of new applications on the platform. GENESYS modelling methodology employing service-oriented component based application design has been extended for this purpose such...
A novel protection device providing ultra-low line capacitance and improved ESD (J. E. Vinson et al., 2003) and surge capability is presented. Applications include stand-alone protection arrays and integrated protection in baseband- or RF-filters. A proprietary epitaxial layer and isolation capability enable high levels of surge power handling capability, while keeping line capacitance low and reducing...
Web caches are deployed in order to quickly deliver the required information to user by placing data in proximity to users. Hierarchical Web caches are scalable, fault tolerant and enhance the degree of sharing. Typically data is either cached at each level or the most wanted data is cached at the leaf levels in the hierarchy. This strategy consumes much network bandwidth during the refreshment of...
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