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We apply a three-dimensional (3D) physical simulator, coupling self-consistently stochastic kinetic Monte Carlo descriptions of ion and electron transport, to investigate switching in silicon-rich silica (SiOx) redox-based resistive random-access memory (RRAM) devices. We explain the intrinsic nature of resistance switching of the SiOx layer, and demonstrate the impact of self-heating effects and...
This paper proposes a method for standardizing the measurement of carbon reduction when using renewable energy sources in conjunction with utility grid energy. The term renewable energy will be used to describe systems that do not depend on the burning of hydrocarbon based fuels to produce electricity. Greenhouse gasses will be used to describe emissions like carbon dioxide, carbon monoxide, nitrous...
Evaluating an energy source based on the amount of invested energy needed to access, use, and dispose of waste for a resource, is crucial to economic stability. Using energy return on investment (EROI) as a tool to measure the investment yield of an energy source provides a large pool of information on which future energy investment decisions cam be based. High yield energy sources are critical to...
Effective cooling is required in power generation, processing, and distribution to avoid failure that could occur during operations. As heat loads continue to increase, manufacturers of wind turbines are turning to improve the cooling system to remove high intensity heat loads from many active parts particularly in the generator part. Wind generators need an effective cooling system due to the large...
This paper proposes an optimal PMU placement (OPP) model to make power system observable for normal operation condition as well as controlled islanding scenario. The optimization objective of proposed model is to minimize the number of installed PMUs and then maximize the measurement redundancy. To take advantage of the power network topology, the effect of zero-injection bus is incorporated into...
This paper presents the relationship between ac flashover voltage and the varying positioning of iced insulator strings under different icing condition. The results were obtained through laboratory test in multifunction artificial climate chamber located at Chongqing University, China. Also difference of the ac icing flashover performance of single insulator string, double insulator strings, inverted...
Increasing complexity of microprocessor-based systems puts pressure on a product's time-to-market. We describe a methodology used in designing the system interface of UltraSPARC-I. This methodology allowed us to define the system interface architecture, verify the functionality, perform timing and noise analysis and do the physical board design in parallel. This concurrency permitted rapid implementation...
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