نتایج جستجو برای: distribution system

تعداد نتایج: 2729394  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند 1388

a significant problem in multicarrier communication systems is the necessity to reduce the value of papr (peak-to-average power ratio) of transmitting signal. in this thesis we study the effect of the system parameters such as coding and modulation types on papr and ultimate ber in a mc-cdma system. in this study we consider fading channel as well as the nonlinearity of transmitter’s amplifier ...

Journal: :international journal of industrial engineering and productional research- 0
e. teimoury assistance professor of industrial eng-iran university of science and technology i.g. khondabi student of industrial eng-shahed university m. fathi phd student of industrial eng-iran university of science and technology

discrete facility location,   distribution center,   logistics,   inventory policy,   queueing theory,   markov processes, the distribution center location problem is a crucial question for logistics decision makers. the optimization of these decisions needs careful attention to the fixed facility costs, inventory costs, transportation costs and customer responsiveness. in this paper we study t...

 Insufficient electrical endurance of equipment and insulation failure against overvoltage is one of the most effective reasons for failure the power line. Lightening, switching or other disruptive parameters can cause line outage or distribution substation failure. There are different devices used to improve the safety, reliability, and power quality of the system. Surge arresters are one of t...

Journal: :iranian journal of science and technology transactions of electrical engineering 2015
s. nojavan m. jalali k. zare

application of distributed generation (dg) units in distribution networks has increased in recent years. sizing and sitting of dg units are two important factors which should be considered, especially for reduction of power losses in distribution system. this paper presents a new approach for dg placement in distribution systems using the mixed integer nonlinear programming (minlp). this approa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - موسسه آموزش عالی غیرانتفاعی و غیردولتی سجاد مشهد - دانشکده فنی 1393

location verification system

State estimation is used in power systems to estimate grid variables based on meter measurements. Unfortunately, power grids are vulnerable to cyber-attacks. Reducing cyber-attacks against state estimation is necessary to ensure power system safe and reliable operation. False data injection (FDI) is a type of cyber-attack that tampers with measurements. This paper proposes network reconfigurati...

Atefeh Jaleilzadeh Mahdi Toosi Marzyeh Ghaesari Mohammad Safari Zahra Soleimani,

Controlling the microbiological quality of water is important for its uses. Microbiological requirements of drinking water ensure the absence of coliforms, but may indicate the potential presence of other potentially pathogenic microorganisms and viruses of fecal origin. A total of 36 water samples, representing the drinking water of the whole city of Aradan, Semnan, Iran, were randomly collect...

2007
Gerard Sanroma Francesc Serratosa

We present in this paper a new compact model to represent a data set based on the main idea of the Point Distribution Model (PDM). Our model overcomes PDM in two aspects, first, it is not needed all the objects to have the same number of points. This is a very important feature, since in real applications, not all the landmarks are represented in the images. And second, the model captures the n...

Golparipour , Soraya , Nabilou , Bahram , Yusefzadeh , Hasan ,

Background:  Equity in access to health care services is one of the main goals of health systems, so that inequality in the geographical distribution of health resources will make it difficult for individuals to access the health care facilities. This study aimed to determine the distribution status of hospital resources and inequality coefficient in the West Azarbaijan province before and afte...

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