نتایج جستجو برای: neural mass model

تعداد نتایج: 2720238  

ژورنال: :مکانیک سازه ها و شاره ها 2013
سید علی سلیمانی ایوری امین صاحبی

when a vehicle travels on a road, different parts of vehicle vibrate because of road roughness. this paper proposes a method to predict road roughness based on vertical acceleration using neural networks. to this end, first, the suspension system and road roughness are expressed mathematically. then, the suspension system model will identified using neural networks. the results of this step sho...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
amir heidari mansour shirvani

in this contribution, linearized dynamic model of cumulative mass fraction (cmf) of potassium nitrate-water seeded continues mixed suspension mixed product removal (cmsmpr) crystallizer is approximated by a simplified model in frequency domain. frequency domain model simplification is performed heuristically using the frequency response of the derived linearized models data. however, the cmf fr...

In this paper, two kinds of chaotic neural networks are proposed to evaluate the efficiency of chaotic dynamics in robust pattern recognition. The First model is designed based on natural selection theory. In this model, attractor recurrent neural network, intelligently, guides the evaluation of chaotic nodes in order to obtain the best solution. In the second model, a different structure of ch...

Constrained optimization problems have a wide range of applications in science, economics, and engineering. In this paper, a neural network model is proposed to solve a class of nonsmooth constrained optimization problems with a nonsmooth convex objective function subject to nonlinear inequality and affine equality constraints. It is a one-layer non-penalty recurrent neural network based on the...

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...

Journal: :مرتع و آبخیزداری 0
ام البنین بذرافشان استادیار دانشکدة منابع طبیعی دانشگاه هرمزگان علی سلاجقه دانشیار دانشکدة کشاورزی و منابع طبیعی دانشگاه تهران احمد فاتحی مرج استادیار مرکز تحقیقات کم آبی و خشک سالی در کشاورزی و منابع طبیعی، تهران محمد مهدوی استاد دانشکدة کشاورزی و منابع طبیعی دانشگاه تهران جواد بذرافشان استادیار دانشکدة کشاورزی و منابع طبیعی دانشگاه تهران سمیه حجابی دانشجوی دکتری دانشکدة کشاورزی و منابع طبیعی دانشگاه تهران

drought is random and nonlinear phenomenon and using linear stochastic models, nonlinear artificial neural network and hybrid models is advantaged for drought forecasting. this paper presents the performances of autoregressive integrated moving average (arima), direct multi-step neural network (dmsnn), recursive multi-step neural network (rmsnn), hybrid stochastic neural network of directive ap...

A. Ghomashi, M. Abbasi

In this paper we present an improved neural network to solve strictly convex quadratic programming(QP) problem. The proposed model is derived based on a piecewise equation correspond to optimality condition of convex (QP) problem and has a lower structure complexity respect to the other existing neural network model for solving such problems. In theoretical aspect, stability and global converge...

Journal: :journal of optimization in industrial engineering 2016
hamed fazlollahtabar mohamma saidi-mehrabad

we compare two approaches for a markovian model in flexible manufacturing systems (fmss) using monte carlo simulation. the model which is a development of fazlollahtabar and saidi-mehrabad (2013), considers two features of automated flexible manufacturing systems equipped with automated guided vehicle (agv) namely, the reliability of machines and the reliability of agvs in a multiple agv jobsho...

Journal: :iranian journal of medical physics 0
payam samadi miandoab department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. ahmad esmaili torshabi department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. saber nankali department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran. mohammad reza rezaie department of electrical and computer engineering, medical radiation group, graduate university of advanced technology, haft bagh highway, knowledge paradise, kerman, iran.

introduction patient set-up optimization is required in radiotherapy to fill the accuracy gap between personalized treatment planning and uncertainties in the irradiation set-up. in this study, we aimed to develop a new method based on neural network to estimate patient geometrical setup using 4-dimensional (4d) xcat anthropomorphic phantom. materials and methods to access 4d modeling of motion...

Journal: :hepatitis monthly 0
bahareh khosravi department of biostatistics, shiraz university of medical sciences, shiraz, ir iran saeedeh pourahmad department of biostatistics, shiraz university of medical sciences, shiraz, ir iran; colorectal research center, shiraz university of medical sciences, shiraz, ir iran; department of biostatistics, shiraz university of medical sciences, p. o. box: 71345-1874, shiraz, ir iran. tel/fax: +98-7132349330 amin bahreini department of organ transplantation, ahvaz university of medical sciences, ahvaz, ir iran saman nikeghbalian department of organ transplantation, shiraz university of medical sciences, shiraz, ir iran goli mehrdad center of namazee hospital organ transplant, shiraz, ir iran

conclusions the present study detected more accurate results for ann method compared to those of cox ph model to analyze the survival of patients with liver transplantation. furthermore, the order of effective factors in patients’ survival after transplantation was clinically more acceptable. the large dataset with a few missing data was the advantage of this study, the fact which makes the res...

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