نتایج جستجو برای: polynomial fitting

تعداد نتایج: 142953  

ابراهیمی جابری, ریحانه, مختاری, علی,

In this paper, we have simulated the physical properties of BaMnxMo1-xO3 (x=0, 0.5, 1) perovskite compound by the density functional theory and Hubbard model, using the Espersso code. To calculate the exchange-correlation potential in the Kohn Sham equations, the generalized gradient approximation (GGA) has been used.  Also, because the calculated results indicate that U parameter plays a vital...

In order to investigate the milk and its components curve of Khuzestani buffaloes a total of 9061 data of test-day milk, fat and protein yield of the first lactation period buffaloes collected during 1993-2013 were used. The buffaloes having less than 4 test-day records were removed. The lactation days was considered from the 5th to 210th days of lactation. Five different functions of Wood, Wil...

Journal: :journal of the iranian chemical research 0
adnan a. bekhit department of pharmaceutical chemistry, school of pharmacy, addis ababa university, addis ababa1176 ethiopia. adissu alemayehu department of pharmaceutical chemistry, school of pharmacy, addis ababa university, addis ababa1176 ethiopia. abdel-maaboud i. mohamed department of pharmaceutical chemistry, school of pharmacy, addis ababa university, addis ababa1176 ethiopia. ariaya hymete department of pharmaceutical chemistry, school of pharmacy, addis ababa university, addis ababa1176 ethiopia.

a simple, accurate and precise hptlc- densitometry method for the simultaneousdetermination of abacavir, lamivudine and zidovudine in pharmaceutical tablet has beendeveloped. separation of tablet components was performed on aluminum backed hptlc plates(silica gel 60 f254 20×20 cm with 0.2 mm thickness, camag, muttenz, switzerland ) usingmethanol : chloroform : acetonitrile (4 : 8 : 3 v/v). good...

2003
Christian J. Walder Brian C. Lovell Peter J. Kootsookos

An algebraic curve is defined as the zero set of a multivariate polynomial. We consider the problem of fitting an algebraic curve to a set of vectors given an additional set of vectors labelled as interior or exterior to the curve. The problem of fitting a linear curve in this way is shown to lend itself to a support vector representation, allowing non-linear curves and high dimensional surface...

Journal: :Automatika 2022

Induction Motors (IM) are known to lag behind the rated speed when operating at different loads. In this context, controllers gain importance. This problem has attracted attention of many scientists from past present. study, it was carried out increase control performance IM. Scalar Control (SC) method is used in Variable Frequency (VFC) technique preferred SC. Thus, frequency change will be pe...

Journal: :Applied optics 2006
M Ares S Royo

We analyze an alternative to classical Zernike fitting based on the cubic B-spline model, and compare the strengths and weaknesses of each representation over a set of different wavefronts that cover a wide range of shape complexity. The results obtained show that a Zernike low-degree polynomial expansion or a cubic B-spline with a low number of breakpoints are the best choices for fitting simp...

2009
Pasi Rastas

We present a novel dynamic programming framework that allows one to compute tight upper bounds for the p-values of gapped local alignments in pseudo–polynomial time. Our algorithms are fast and simple and unlike most earlier solutions, require no curve fitting by sampling. Moreover, our new methods do not suffer from the so–called edge effects, a by–product of the common practice used to comput...

Journal: :علوم دامی ایران 0
عبداله رضاقلی وند لاهرود دانشجوی کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمد مرادی شهربابک استاد پردیس کشاورزی و منابع طبیعی دانشگاه تهران عباس پاکدل دانشیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران

in this research, in order to describe milk production traits lactation mahabadi goat breed, seven statistical functions were fitted using 1665 milk production traits records and 833 body weight records. the milk production traits were milk yield, fat percent, fat yield, protein percent, protein yield, lactose percent and snf percent. these records have been recorded on 123 goats during years o...

Journal: :Neural networks : the official journal of the International Neural Network Society 2003
Nikolay I. Nikolaev Hitoshi Iba

This paper presents a constructive approach to neural network modeling of polynomial harmonic functions. This is an approach to growing higher-order networks like these build by the multilayer GMDH algorithm using activation polynomials. Two contributions for enhancement of the neural network learning are offered: (1) extending the expressive power of the network representation with another com...

2003
Christian J. Walder Brian C. Lovell

An algebraic curve is defined as the zero set of a multivariate polynomial. We consider the problem of fitting an algebraic curve to a set of vectors given an additional set of vectors labelled as interior or exterior to the curve. The problem of fitting a linear curve in this way is shown to lend itself to a support vector representation, allowing non-linear curves and high dimensional surface...

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