نتایج جستجو برای: for forecasting river flow process

تعداد نتایج: 10890387  

Journal: :مرتع و آبخیزداری 0
مرتضی نبی زاده دانشجوی کارشناسی ارشد مهندسی منابع آب، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران. ابوالفضل مساعدی دانشیار دانشکده منابع طبیعی و محیط زیست، دانشگاه فردوسی مشهد، ایران. امیر احمد دهقانی استادیار گروه مهندسی آب، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، ایران.

river flow forecasting for a region has a special and important role for optimal allocation of water resources. in this research, for forecasting river flow process, fuzzy inference system (fis) is used. three parameters including precipitation, temperature and daily discharge are used for forecasting of daily river flow of lighvan river located in lighvanchai watershed. for the initial preproc...

Journal: :مدیریت آب و آبیاری 0
مرتضی نبی زاده دانش آموخته کارشناسی ارشد مهندسی منابع آب، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان - ایران ابوالفضل مساعدی دانشیار دانشکده منابع طبیعی و محیط زیست، دانشگاه فردوسی مشهد، مشهد – ایران امیر احمد دهقانی استادیار گروه مهندسی آب، دانشکده کشاورزی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گرگان - ایران

in recent years, use of fuzzy collection theories for modeling of hydrological phenomenon's that is including complexity and uncertainly is considered scholars. so in this research, adaptive neuro-fuzzy inference system (anfis) is used for performance of river flow forecasting process. in this research, three parameters such as raining, temperature and daily discharge of lighvanchai basin ...

  One of the most important issues in watersheds management is rainfall-runoff hydrological process forecasting. Using new models in this field can contribute to proper management and planning. In addition, river flow forecasting, especially in flood conditions, will allow authorities to reduce the risk of flood damage. Considering the importance of river flow forecasting in water resources ma...

Journal: :آب و خاک 0
محبوبه زارع زاده مهریزی امید بزرگ حداد

abstract one of the major factors on the amount of water resources is river flow which is so dependent to the hydrologic and meteorologic phenomena. simulation and forecasting of river flow makes the decision maker capable to effectively manage the water resources projects. so, simulation and forecasting models such as artificial neural networks (anns) are commonly used for simulation and predi...

2014
Galina V. Merkuryeva

The paper presents the state-of-the-art in flood forecasting and simulation applied to a river flood analysis and risk prediction. Different water flow forecasting and river simulation models are analysed. An advanced river flood forecasting and modelling approach developed within the ongoing project INFROM is described. It provides an integrated procedure for river flow forecasting and simulat...

2012
S. Ismail

Successful river flow forecasting is a major goal and an essential procedure that is necessary in water resource planning and management. There are many forecasting techniques used for river flow forecasting. This study proposed a hybrid model based on a combination of two methods: Self Organizing Map (SOM) and Least Squares Support Vector Machine (LSSVM) model, referred to as the SOM-LSSVM mod...

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...

2016
Abdalla Osman Mohammed Falah Allawi Haitham Abdulmohsin Afan Aboelmagd Noureldin Ahmed El-shafie

Abstract. River stream-flow is well-thought-out as an essential element in the hydrology studies, especially for reservoir management. Forecasting river stream-flow is the key for the hydrologists in 10 proposing certain short or long-term planning and management for water resources system. In fact, developing stream-flow forecasting models are generally categorized into two main classes; proce...

2007
M. Firat

The use of Artificial Intelligence methods is becoming increasingly common in the modeling and forecasting of hydrological and water resource processes. In this study, applicability of Adaptive Neuro Fuzzy Inference System (ANFIS) and Artificial Neural Network (ANN) methods, Generalized Regression Neural Networks (GRNN) and Feed 5 Forward Neural Networks (FFNN), for forecasting of daily river f...

1993
A. I. McLeod

The merits of the modelling philosophy of Box & Jenkins (1970) are illustrated with a summary of our recent work on seasonal river flow forecasting. Specifically, this work demonstrates that the principle of parsimony, which has been questioned by several authors recently, is helpful in selecting the best model for forecasting seasonal river flow. Our work also demonstrates the importance of mo...

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