نتایج جستجو برای: power model
تعداد نتایج: 2493468 فیلتر نتایج به سال:
This paper proposes a method for extending the ability of rotary power flow controller (RPFC) using tap-changer of the RPFC’s transformers. A detailed model of the device is presented to analyze the effects of the tap changer operation on the performance of the RPFC. To evaluate the results, the RPFC model is simulated using PSCAD/EMTDC software. Dynamic operation of the RPFC on a 400 kV transm...
In this study polycrystaline samples of Y1-2xCaxThxBa2Cu3O7-δ with x=0, 0.025, 0.05, 0.075 were made by standard solid state methods. The transport and superconducting properties have been studied by the thermoelectric power S(x,T) measurements as a function of temperature and doping concentration. The critical temperature decreased linearly by increasing the doping concentration. S(x,T) was a...
A countable group is C∗-simple if its reeduced C∗-algebra is a simple algebra. Since Powers recognised in 1975 that non-abelian free groups are C∗-simple, large classes of groups which appear naturally in geometry have been identified, including non-elementary Gromov hyperbolic groups and lattices in semisimple groups. In this exposition, C∗-simplicity for countable groups is shown to be an ext...
Empresas e Instituições públicas de médio e grande porte dispõem usualmente de diversas unidades operacionais, que têm cada vez mais liberdade para definir as próprias regras de desenvolvimento de suas atividades, procedimentos e formas de atuação. No caso de uma aplicação composta por vários subsistemas, a existência de um repositório de dados comum a todos esses subsistemas significa que, ind...
Resumo. O Twitter se consolidou como uma plataforma popular para fornecer conteúdo gerado por usuários, que varia de simples conversação a informação em tempo real sobre eventos recentes. Muitas pesquisas demostraram que o conteúdo produzido no Twitter possui alto grau de correlação com o que ocorre no mundo real, o que levou ao desenvolvimento de aplicações em diversas áreas, abrangendo desde ...
Se. por um lade, os custos das comunicac6es ir5o baixar para o mesmo volume de trdfego, quer por via da evoluc5o das tarifas quer peta oferta de novos servicos de telecomunicac6es que suportam soiuc6es mais eficientes, per outro, o desenvolvimente tecnol6gico ird dar-nos novas aplicaC6es que farAe recurso k comunicac5e entre sistemas de maiores volumes de informac5o, exigindo larguras de banda ...
water contaminated with petroleum hydrocarbons has harmful effects on health, economy and environment. in this study, photolysis process for treating petroleum hydrocarbons was investigated. hence different initial cods with different uv-c radiation power were examined. based on the energy consumption per unit of cod removed, cod of 350 mg/l and radiation power of 80 w were chosen as the optimu...
this paper presents a novel indirect adaptive power system stabilizer (pss) via a developed synergetic control methodology and fuzzy systems. fuzzy system is utilized in an adaptive scheme to estimate the system using a nonlinear model. the synergetic control guarantees robustness of the controller and makes the controller easy to implement because of using a chatter free continuous control law...
This paper based on the new empirical industrial organization model (NEIO) examines the impact of market concentration and cost efficiency on bank's profit rate margin in Iran. The study uses the model developed by Azzam (1997) to evaluate the market power and cost efficiency for 15 active banks in the banking industry. The empirical findings indicate a decrease in the market power of banks dur...
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