نتایج جستجو برای: artificial neural network method

تعداد نتایج: 2503874  

Hossein Ghayoumi zadeh Javad Haddadnia, Kazem Hassanpour Maryam Hashemian

Introduction This study is an effort to diagnose breast cancer by processing the quantitative and qualitative information obtained from medical infrared imaging. The medical infrared imaging is free from any harmful radiation and it is one of the best advantages of the proposed method. By analyzing this information, the best diagnostic parameters among the available parameters are selected and ...

H. Rezai Zhiani S. Dolatabadi

The paper deals with Data Envelopment Analysis (DEA) and Artificial Neural Network (ANN). We believe that solving for the DEA efficiency measure, simultaneously with neural network model, provides a promising rich approach to optimal solution. In this paper, a new neural network model is used to estimate the inefficiency of DMUs in large datasets.

Journal: :environmental health engineering and management 0
ali akbar mohammadi department of environmental health engineering, neyshabur university of medical sciences, neyshabur, iran mansour ghaderpoori department of environmental health engineering, faculty of health and nutrition, lorestan university of medical sciences, khorramabad, iran mahmood yousefi students research committee, neyshabur university of medical sciences, neyshabur, iran malihe rahmatipoor students research committee, neyshabur university of medical sciences, neyshabur, iran safoora javan students research committee, department of environmental health engineering, neyshabur university of medical sciences, neyshabur, iran

background: one issue of concern in water supply is the quality of water. measuring the qualitative parameters of water is time-consuming and costly. predicting these parameters using various models leads to a reduction in related expenses and the presentation of overall and comprehensive statistics for water resource management. methods: the present study used an artificial neural network (ann...

Journal: :gas processing 0
hamidreza yousefi department of petroleum engineering, amirkabir university of technology, iran ebrahim shamohammadi department of petroleum engineering, amirkabir university of technology, iran ehsan khamehchi department of petroleum engineering, amirkabir university of technology, iran

gas hydrates are a costly problem when they plug oil and gas pipelines. the best way to determine the hft and pressure is to measure these conditions experimentally for every gas system. since this is not practical in terms of time and money, correlations are the other alternative tools. there are a small number of correlations for specific gravity method to predict the hydrate formation. as th...

Journal: :iranian journal of environmental sciences 0
amir soltani mohammadi irrigation and drainage department, faculty of water sciences engineering, shahid chamran university, ahvaz, iran atefeh sayadi shahraki irrigation and drainage department, faculty of water sciences engineering, shahid chamran university, ahvaz, iran abd ali naseri irrigation and drainage department, faculty of water sciences engineering, shahid chamran university, ahvaz, iran

one of the main aims of water resource planners and managers is to estimate and predict the parameters of groundwater quality so that they can make managerial decisions. in this regard, there have many models developed, proposing better management in order to maintain water quality. most of these models require input parameters that are either hardly available or time-consuming and expensive to...

Journal: :iranian journal of science and technology (sciences) 2015
n. samani

a neural network is developed for the determination of leaky confined aquifer parameters. leakage into the aquifer takes place from the storage in the confining aquitard. the network is trained for the well function of leaky confined aquifers by the back propagation technique and adopting the levenberg–marquardt optimization algorithm. by applying the principal component analysis (pca) on the a...

Journal: :journal of agricultural science and technology 2012
l. momenzadeh a. zomorodian d. mowla

drying characteristics of green pea (pisum satium) with an initial moisture content of 76% (db) was studied in a fluidized bed dryer assisted by microwave heating. four drying air temperatures (30, 40, 50 and 60ºc) and five microwave powers (180, 360, 540, 720 and 900w) were adopted. several experiments were conducted to obtain data for sample moisture content versus drying time. the results sh...

Journal: :iranian red crescent medical journal 0
hadi ansarihadipour molecular and medicine research center, arak university of medical sciences, arak, ir iran; molecular and medicine research center, arak university of medical sciences, arak, ir iran. tel: +98-8634173502, fax: +98-8634173529 mohamadreza bayatiani department of radiotherapy, faculty of paramedicine, arak university of medical sciences, arak, ir iran

conclusions lead contamination in the presence of an emf exacerbates the oxidative damage to plasma proteins as well as the conformational changes in hb. an artificial neural network can be used as a predictive tool for the oxidative danger posed to workers in industrial fields, battery manufacturing companies, and power plants. patients and methods in this experimental study, the blood samples...

Journal: :international journal of transportation engineereing 2016
ali reza ghanizadeh mohammad reza ahadi

in this study, an artificial neural network was developed in order to analyze flexible pavement structure anddetermine its critical responses under the influence of standard axle loading. in doing so, more than 10000four-layered flexible pavement sections composed of asphalt concrete layer, base layer, subbase layer, andsubgrade soil were analyzed under the impact of standard axle loading. pave...

Journal: :practice in clinical psychology 0
ebrahim rezaei dogaheh department of clinical psychology, university of social welfare and rehabilitation sciences, tehran, iran.uswr

objective: social anxiety disorder (sad) is defined as a constant fear of being embarrassed or negatively evaluated in social situations or while doing activities in the presence of others. several studies have examined the role of certain variables that might predict response to treatment and may affect treatment outcome. the purpose of this study was to identify predictive variables of change...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید