نتایج جستجو برای: interval prediction neural networks

تعداد نتایج: 1045591  

Journal: :journal of agricultural science and technology 2014
i. yildirim s. ozsahin o. t. okan

wood and non-wood resources in the forests have occupied a very important place in human’s life, since the advent of history. and today, developing technology along with increasing needs enhance the importance of the other functions of forests, in parallel with wood production. both in the world and as well in turkey, one of the featured functions of forests is the production of non-woodforest ...

Journal: :journal of optimization in industrial engineering 2012
amir mohammadzadeh nasrin mahdipour arash mohammadzadeh

decision making on budgeting is one of the most important issues for executing managers. budgeting is a major tool for planning and control of projects. in public and non-profit organizations and institutions, estimating the costs and revenues plays an important role in receiving credit and budgeting. in this regard, in the present paper the case of isfahan municipality is considered. one of th...

Journal: :آب و خاک 0
فتحی فتحی محمدی محمدی همایی همایی

abstract prediction of input flow into water resources is regarded as one of the most important issues in optimum planning and management in producing electro-water energy and optimum allocation of water into different consumption sources. different parameters affect on input discharge into dams. climate variables including temperature and rainfall have the most effect on input runoff rate to w...

اشرفی, فرزانه, اشرفی, مهدی, حمیدی بهشتی, محمد تقی, شهیدی, شهرزاد,

Background: Kidney transplantation had been evaluated in some researches in Iran mainly with clinical approach. In this research we evaluated graft survival in kidney recipients and factors impacting on survival rate. Artificial neural networks have a good ability in modeling complex relationships, so we used this ability to demonstrate a model for prediction of 5yr graft survival after ki...

Journal: :journal of computer and robotics 0
leila khalatbari department of computer engineering, faculty of electrical, it and computer science, qazvin branch, islamic azad university, qazvin, iran mohammad reza kangavari department of computer engineering, iran university of science and technology, tehran, iran

dna sequence, containing all genetic traits is not a functional entity. instead, it transfers to protein sequences by transcription and translation processes. this protein sequence takes on a 3d structure later, which is a functional unit and can manage biological interactions using the information encoded in dna. every life process one can figure is undertaken by proteins with specific functio...

ژورنال: :چشم انداز مدیریت صنعتی 0
نظام الدین فقیه دانشگاه شیراز حبیب اله رعنایی کرد شولی دانشگاه شیراز علی محمدی دانشگاه شیراز علی حسین صمدی دانشگاه شیراز محمد هاشم موسوی حقیقی مرکز تحقیقات کشاورزی و منابع طبیعی فارس محمد غفورنیان دانشگاه شیراز

چکیده      در این پژوهش بااستفاده از تفکر سیستم­های پویا به مدل سازی ریاضی سیستم زنجیره تأمین ارتباط ثابت در شرکت مخابرات ایران پرداخته ایم و بدین منظور از اطلاعات موجود و مستند شرکت مخابرات ایران از سال 1384 تا 1391 و نتایج شبیه­سازی مدل پویایی­های سیستم تا سال 1404 استفاده کرده ایم. برای تجزیه و تحلیل و تعیین ماهیت سیستم، از مفهوم مدل سازی ریاضی سیستم­های پویا استفاده کردیم. نتایج مدل سازی نش...

Journal: :iranian journal of applied animal science 2014
s. ghazanfari

this study was conducted to investigate the prediction of growth performance using linear regression and artificial neural network (ann) in broiler chicken. artificial neural networks (anns) are powerful tools for modeling systems in a wide range of applications. the ann model with a back propagation algorithm successfully learned the relationship between the inputs of metabolizable energy (kca...

امامقلی زاده, صمد, اکبرزاده, فرزانه, حسن پور, حمید,

     Groundwater level prediction is an important issue in scheduling and managing water resources. A number of approaches such as stochastic, fuzzy networks and artificial neural network have been used for such prediction. A neural network model has been employed in this research for Shahrood plain groundwater level prediction. For this reason, statistical parameters of groundwater level fluct...

Journal: :مدیریت صنعتی 0
محمدرضا نیک بخت دانشگاه تهران مریم شریفی دانشگاه تهران

the main purpose of this paper is prediction of tse corporate financial bankruptcy using artificial neural networks. the mean values of key ratios reported in past bankruptcy studies were selected for neural network inputs (working capital to total assets, net income to total assets, total debt to total assets, current assets to current liabilities, quick assets to current liabilities). the neu...

F. Forughimanesh H. Bagherpour M. Abdollahian Noghabi M.E. Khorasani Fardvani S. Minaei

This paper reports on the use of Artificial Neural Networks (ANN) and Partial Least Squareregression (PLS) combined with NIR spectroscopy (900-1700 nm) to design calibration models for thedetermination of sugar content in sugar beet. In this study a total of 80 samples were used as the calibration set,whereas 40 samples were used for prediction. Three pre-processing methods, including Multiplic...

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