ABSTRACT This work seeks to determinate whether the transient simulation on two PCs employing diakoptics to partition short cables is better, flop-wise, than using one PC─even for a small network. A methodology for the parallel simulation of a shipboard power system coupled by short lines is presented. Loop analysis, suggested by the nature of ungrounded power systems, is applied to formulate a...

This paper presents the basis of Property Grammars, a fully constraintbased theory. In this approach, all kinds of linguistic information is represented by means of constraints. The constraint system constitutes then the core of the theory: it is the grammar, but it also constitutes, after evaluation for a given input, its description. Property Grammars is then a non-generative theory in the se...

The integration of wind power into power grid will bring some impacts on the multiple subjects of electric power system. Economic impacts of wind power integration on multiple subjects of China’s electric power system were quantitatively assessed from Quasi-public goods property perspective in this paper. Firstly, the Quasi-public goods property of transmission services provided by power grid c...

Following the U.S. Clean Air Act Amendments of 1990, electric utilities dramatically increased their utilization of low-sulfur coal from the Powder River Basin (PRB). Recent studies indicate that railroads hauling PRB coal exercise a substantial degree of market power and that relative price changes in the mining and transportation sectors were contributing factors to the observed pattern of in...

This paper analyzes short-run interfuel substitution between fossil fuels in West European power generation. The problem is studied within a restricted translog cost model, which is estimated by pooling time-series data across eight countries in West Europe. The empirical results indicate that interfuel substitution in existing power plants is substantial, especially that between oil and gas. T...

This study focuses on the effect of the synthetic conditions on the stability, particle size, redox chemistry of cobalt into the framework of CoAlPO-34. It seems that the most sufficient pH for the substitution of Co into the framework of CoAlPO-34 was pH around 7.5 when the assynthesized bifunctional catalyst has the best redox property. The pH of the initial gel has strong effect on the parti...

background: this study is the first research investigating the possible effect of pulsed power signals on the characteristics of cortical bone by comparing the mechanical properties of this type of bone pre and post expose to pulsed power. methods: a positive buck-boost converter was applied to generate adjustable high voltage, high frequency pulses (up to 500 v and 10 khz). the functional beha...

We present and explore a general method for deriving a Lie-Markov model from a finite semigroup. If the degree of the semigroup is k, the resulting model is a continuous-time Markov chain on k states and, as a consequence of the product rule in the semigroup, satisfies the property of multiplicative closure. This means that the product of any two probability substitution matrices taken from the...

This research studies the relationship between socio-economic status and music consumption among the youth. The socio-economic indexes include prestige, power and property from Max Weber's Theory. This survey covers a researcher-made questionnaire along with 200 young ones between 15-35 years of age living in Tehran (areas: Elahieh, Jourdan, Apadana, Enghlab, Kianshahr, Ra-ahan). Nine hypothese...