نتایج جستجو برای: artificial neural networks

تعداد نتایج: 834162  

Journal: :desert 2008
a. m. kalteh p. hjorth

over the last decade or so, artificial neural networks (anns) have become one of the most promising tools formodelling hydrological processes such as rainfall runoff processes. however, the employment of a single model doesnot seem to be an appropriate approach for modelling such a complex, nonlinear, and discontinuous process thatvaries in space and time. for this reason, this study aims at de...

Journal: :journal of advances in computer research 2015
zabihallah pargam yazdan jamshidi

the successful key of trading in the forex market is the selection of correct exchange in proper time based on an exact prediction of future exchange rate. foreign exchange rates are affected by many correlated economic, political and even psychological factors. therefore, in order to achieve a profitable trade these factors should be considered. the application of intelligent techniques for fo...

Ali Jafari, Asadolah Akram Fatemeh Almasi Hadi Afazeli Mosen Nosrati

During the past few years, modeling in agriculture has attracted considerable attention. New modeling methods including neural networks are employed in various industries, and it is necessary that their use in agriculture be also considered. This research addressed the trend of energy use in broiler farms in Alborz Province and sought to model the trend of energy consumption and production in t...

2002
R. Nayak L. C. Jain K. H. Ting

This paper presents a review of applications of artificial neural networks in biomedical engineering area. Artificial neural networks in general are explained; some limitations and some proven benefits of neural networks are discussed. Use of art ificial neural network techniques in various biomedical engineering applications is summarised. A case study is used to demonstrate the efficacy of ar...

Journal: :راهبرد مدیریت مالی 0
شهاب الدین شمس استادیار مدیریت، دانشگاه مازندران بهروز عطایی کارشناس ارشد مدیریت بازرگانی (گرایش مالی)، دانشگاه مازندران

the purpose of this research is to detect manipulation of stock prices in tehran stock exchange that it has been done through hybrid genetic algorithm-artificial neural network (ann-ga) model and the simplified quadratic discriminant function (sqdf) model. in this study, the variables of price, trading volume and free float stock to match the results of the model and the actual data of price ma...

Journal: :مهندسی بیوسیستم ایران 0
محمد شهابی قویونلویی دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران شاهین رفیعی استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران سید سعید محتسبی استاد ،پردیس کشاورزی و منابع طبیعی دانشگاه تهران سلیمان حسین پور دانش آموخته دورۀ دکتری، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

using image processing and artificial intelligence systems in agriculture and food industry is increasing daily. the purpose of this research is to study the feasibility of using image processing technique in predicting process of moisture content changes on green tea sheets during the drying using predictive artificial intelligence systems such as: artificial neural networks and adaptive neuro...

H. Harandizadeh, M. M. Toufigh, V. Toufigh,

The prediction of the ultimate bearing capacity of the pile under axial load is one of the important issues for many researches in the field of geotechnical engineering. In recent years, the use of computational intelligence techniques such as different methods of artificial neural network has been developed in terms of physical and numerical modeling aspects. In this study, a database of 100 p...

Journal: :نشریه علمی - پژوهشی هیدرولوژی کاربردی 0
fatemeh shokrian sari agricultural sciences and natural resources university k. shahedi

estimate of sediment load is required in a wide spectrum of water resources engineering problems. the nonlinear nature of suspended sediment load series necessitates the utilization of nonlinear methods to simulate the suspended sediment load. in this study artificial neural networks (anns) are employed to estimate daily suspended sediment load. two different ann algorithms, multi layer percept...

ژورنال: علوم آب و خاک 2010
آخوندعلی, علی محمد, امیری چایجان, رضا, زارع ابیانه, حمید, شریفی, محمدرضا, طبری, حسین, معروفی, صفر,

In mountainous basins, snow water equivalent is usually used to evaluate water resources related to snow. In this research, based on the observed data, the snow depth and its water equivalent was studied through application of non-linear regression, artificial neural network as well as optimization of network's parameters with genetic algorithm. To this end, the estimated values by artificial n...

Mahmoud Reza Pishvaie, Najeh Alali Vahid Taghikhani

Production of highly viscous tar sand bitumen using Steam Assisted Gravity Drainage (SAGD) with a pair of horizontal wells has advantages over conventional steam flooding. This paper explores the use of Artificial Neural Networks (ANNs) as an alternative to the traditional SAGD simulation approach. Feed forward, multi-layered neural network meta-models are trained through the Back-...

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