نتایج جستجو برای: factor matrix

تعداد نتایج: 1173306  

Journal: :Statistics and Computing 2021

Data fusion involves the integration of multiple related datasets. The statistical file-matching problem is a canonical data in multivariate analysis, where objective to characterise joint distribution set variables when only strict subsets marginal distributions have been observed. Estimation covariance matrix full challenging given missing-data pattern. Factor analysis models use lower-dimens...

2006
Moody T. Chu Nickolay T. Trendafilov Nickolay Trendafilov

In the present paper the ORTHOMAX rotation problem is reconsidered. It is shown that its solution can be presented as a steepest ascent flow on the manifold of orthogonal matrices. A matrix formulation of the ORTHOMAX problem is given as an initial value problem for matrix differential equation of first order. The solution can be found by any available ODE numerical integrator. Thus the paper p...

GA Gholami, M. Mohammadi, MR. Abrishami,

  Objective: At present, growth factor-containing products such as enamel matrix derivatives, recombinant bone morphogenetic protein (rh-BMP), recombinant platelet derived growth factor and platelet rich plasma (PRP) have gained increasing attention. PRP is an autologous source of platelet growth factors used to enhance healing of soft and hard tissues. PRP has gained popularity due to its auto...

Journal: :journal of mathematical modeling 0
amir sadeghi department of mathematics, islamic azad university, robat karim branch, tehran, iran maryam shams solary department of mathematics, payame noor university, p.o. box 19395-3697, tehran, iran

it is well known that the matrix exponential function has practical applications in engineering and applied sciences. in this paper, we present some new explicit identities to the exponential functions of a special class of matrices that are known as central-symmetric $x$-form. for instance, $e^{mathbf{a}t}$, $t^{mathbf{a}}$ and $a^{mathbf{a}t}$ will be evaluated by the new formulas in this par...

Journal: :iranian journal of pharmaceutical sciences 0
saini nish school of pharmaceutical sciences, shoolini university solan (h.p), india george mathew school of pharmaceutical sciences, shoolini university solan (h.p), india joseph lincy school of pharmaceutical sciences, shoolini university solan (h.p), india

the purpose of this review article is to characterize all of the parameters regarding the types, polymers used, and release kinetics of matrix tablets. matrix system was the earliest oral extended release platform for medicinal use. matrix tablets are most commonly used methods to modulate the release profile of drugs. they are much desirable and preferred for such therapy because they offer be...

Journal: :journal of optoelectronical nano structures 0
marjan jafari imam khomeini international university, qazvin, iran

we describe how to obtain electronic transport properties of disordered graphene, including the tight binding model and nearest neighbor hopping. we present a new method for computing, electronic transport wave function and greens function of the disordered graphene. in this method, based on the small rectangular approximation, break up the potential barriers in to small parts. then using the f...

Three-factor interaction for the two-level, three-level, and four-level factorial designs was studied. A new technique and formula based on the coefficients of orthogonal polynomial contrast were proposed to calculate the effect of the three-factor interaction The results show that the proposed technique was in agreement with the least squares method. The advantages of the new technique are 1) ...

Journal: Vaccine Research 2015
MR Maleki , Y Diba ,

Introduction: This paper proposes an appropriate strategy for exporting Hepatitis B vaccine, manufactured by Pasteur Institute of Iran, to other countries. Methods: Eeffectiveness factors and their relative variables were found out by factor analysis method in SPSS software. Results: We could identify 6 main factors which can extremely affect the export of this product. We evaluated manufacture...

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