نتایج جستجو برای: water network

تعداد نتایج: 1204521  

Afshin Maleki, Mahdi Hadi Mehri Solaimany-Aminabad

Application of a reliable forecasting model for any water treatment plant (WTP) is essential in order to provide a tool for predicting influent water quality and to form a basis for controlling the operation of the process. This would minimize the operation and analysis costs, and assess the stability of WTP performances. This paper focuses on applying an artificial neural network (ANN) approac...

2013
Samuel J. Peter José Carlos de Araújo Jürgen Herrmann

This study investigates flood avalanches in a dense reservoir network in the semiarid north-eastern Brazil. The population living in this area strongly depends on the availability of the water from this network. Water is stored during intense wet-season rainfall events and evaporates from the reservoir surface during the dry season. These seasonal changes are the driving forces behind the water...

Journal: :اکو هیدرولوژی 0
سید جواد ساداتی نژاد دانشیار دانشکدۀ علوم و فنون نوین، دانشگاه تهران محمدرضا شکاری دانشجوی دکتری بیابان زدایی، دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه کاشان عباسعلی ولی دانشیار دانشکدۀ منابع طبیعی و علوم زمین، دانشگاه کاشان

many of the meteorological variables such as precipitation, strongly depend on the large scale atmospheric and ocean surface circulations.in the current study, the effect of climatic signals on the average monthly rainfall of the adjacent stations of sheshdeh and gharebolagh area was investigated during the statistical period twenty five years from 1985 to 2009. the regression and neural networ...

Journal: :آب و خاک 0
علی داننده مهر محمدرضا مجدزاده طباطبائی

abstract accurate prediction of river flow is one of the most important factors in surface water recourses management especially during floods and drought periods. in fact deriving a proper method for flow forecasting is an important challenge in water resources management and engineering. although, during recent decades, some black box models based on artificial neural networks (ann), have bee...

Journal: :محیط شناسی 0
محمدرضا جلیلی قاضی زاده استادیار دانشکده عمران، آب و محیط زیست، دانشگاه شهید بهشتی ضیاالدین ایدی دانشجوی دکتری سازه های هیدرولیکی، دانشگاه رازی

extended abstract abstract pressure management is an effective method for water demand management. for evaluation of the effects of pressure changes on leakage level of water networks, the favad equation is usually used. however, in this equation, exponent of pressure parameter (n) needs to be determined. for estimation of n, either some information about the leak opening is necessary or networ...

Falaki, Mohsen ,

Abstract: Unified Power Flow Controller (UPFC) is one of the FACTS devices which plays a crucial role in simultaneous regulating active and reactive power, improving system load, reducing congestion and cost of production. Therefore, determining the optimum location of such equipment in order to improve the performance of the network is significant. In this paper, WCA algorithm is used to locat...

Barati, Hassan , Nasir, Mohammad, Shirinzaban, Amir ,

Abstract: Unified Power Flow Controller (UPFC) is one of the FACTS devices which plays a crucial role in simultaneous regulating active and reactive power, improving system load, reducing congestion and cost of production. Therefore, determining the optimum location of such equipment in order to improve the performance of the network is significant. In this paper, WCA algorithm is used to locat...

Mohammad Kavoosi Kalashami Morteza Tahami Pour

Economic valuation of water is useful in the administration and management of water. Population growth and urbanization caused municipal water demand increase in Iran. Limited water resource supply and urban water network capacity raised complexity in water resources management. Present condition suggests using economic value of water as a criterion for allocating policies and feasibility study...

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