نتایج جستجو برای: non radial model

تعداد نتایج: 3252176  

In this article, a time dependent partial differential equation is used to model the nonlinear boundary value problem describing heat transfer through a radial porous moving fin with rectangular profile. The study is performed by applying a numerical solver in MATLAB (pdepe), which is a centered finite difference scheme. The thermal conductivity and fin surface emissivity are linearly ...

E. Mirzaie N. Malekmohammadi

Bankruptcy in the same amount of time and history is very rampant and therefore the vision of the future can be prevented. Using data envelopment analysis (DEA) and malmquist index can precise evaluating of the performances of many different kinds of decision making units (DMU) such as hospitals, universities, business firms, etc. In this paper, we will modify directional distance formulation o...

In this paper, the cell-centered finite volume method (CC-FVM) has been presented to simulate the axisymmetric radial flow toward a pumping well. The model is applied to the unstructured triangular grids which allows to simulate inhomogeneous and complex-shaped domains. Due to the non-orthogonality of the irregular grids, the multipoint flux approximation (MPFA) methods are used to discretize t...

1998
A. Del Popolo M. Gambera

In this paper we show how non-radial motions, originating from the tidal interaction of the irregular mass distribution within and around protoclusters, can solve some of the problems of the CDM model. Firstly the discrepancy between the CDM predicted twopoints correlation function of clusters and the observed one. We compare the two-points correlation function, that we obtain taking account of...

Journal: :CoRR 2003
Lili Ma Yangquan Chen Kevin L. Moore

-Most algor i thms in 3D computer vision rely on the pinhole camera model because of its simplicity, whereas virtually all imaging devices int roduce certain amoun t of nonlinear distort ion, where the radial dis tor t ion is the most severe part. Common approach to radial dis tor t ion is by the means of polynomial approximat ion, which introduces distortion-specific pa ramete rs into the came...

Journal: :trauma monthly 0
adel ebrahimpour taleghani hospital, shahid beheshti university of medical sciences, tehran, ir iran shahram nazerani tehran university of medical sciences, tehran, ir iran reza tavakoli darestani imam hossein hospital, shahid beheshti university of medical sciences, tehran, ir iran; imam hossein hospital, shahid madani st., tehran, ir iran. tel.: +98-2188306564, fax: +98-2122569149 salim khani imam hossein hospital, shahid beheshti university of medical sciences, tehran, ir iran

conclusions complete recovery of the hand and finger extension was achieved in nine months. case presentation a 61 year-old man presented with the chief complaint of inability to extend the wrist and the fingers of the left hand which began suddenly the night before admission, following a three-week history of pain, numbness and tingling sensation of the affected extremity. he had no history of...

Mehdi Tajdari Saeed Zare Chavoshi

In the present study, five modeling approaches of RA, MLP, MNN, GFF, and CANFIS were applied so as to estimate the radial overcut values in electrochemical drilling process. For these models, four input variables, namely electrolyte concentration, voltage, initial machining gap, and tool feed rate, were selected. The developed models were evaluated in terms of their prediction capability with m...

M. Hemmat M.R. Mozaffary

In this paper, using the Value Efficiency in DEA pattern by taking decisive obtain. Generally, non-radial model of VE and use proper weight to reduce input and output gain are the appropriate pattern. This paper introduces a multi-objective linear programming problem and efficiency determines the value of inefficient units. Use interactive methods to solve MOLP proposed and applied. In conclusi...

2009
Bharat Ratra

We use the radial baryon acoustic oscillation (BAO) measurements of Gaztañaga et al. (2008a) to constrain parameters of dark energy models. These constraints are comparable with constraints from other “non-radial” BAO data. The radial BAO data are consistent with the time-independent cosmological constant model but do not rule out time-varying dark energy. Subject headings: cosmological paramet...

Karim Salahshoor, Mohammad Reza Jafari

An adaptive version of growing and pruning RBF neural network has been used to predict the system output and implement Linear Model-Based Predictive Controller (LMPC) and Non-linear Model-based Predictive Controller (NMPC) strategies. A radial-basis neural network with growing and pruning capabilities is introduced to carry out on-line model identification.An Unscented Kal...

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