نتایج جستجو برای: support matrices

تعداد نتایج: 729430  

2017
Jennifer Seberry Mieko Yamada

New constructions for amicable orthogonal designs are given. These new designs then give new amicable Hadamard matrices and new skew-Hadamard matrices. In particular we show that if p is the order of normalized amicable Hadamard matrices there are normalized amicable Hadamard matrices of order (p 1)u + 1, u > 0 an odd integer. Tables are given for the existence of amicable and skew-Hadamard mat...

2004
PETER ELBAU GIOVANNI FELDER

The relation between random normal matrices and conformal mappings discovered by Wiegmann and Zabrodin is made rigorous by restricting normal matrices to have spectrum in a bounded set. It is shown that for a suitable class of potentials the asymptotic density of eigenvalues is uniform with support in the interior domain of a simple smooth curve.

ژورنال: علوم آب و خاک 2009
جوزی شکاگورابی, ساحره, شادپرور, عبدالاحد,

In selection index procedure, phenotype and genetic (co)variance matrices of traits are used for calculating different genetic parameters like index coefficients, index variance, genetic gain in selection goal and selection accuracy. Sometimes, it is possible that these matrices become inconsistent or they are not positive, nor definite. In the current study, for investigation of the effect of ...

Journal: :Australasian J. Combinatorics 1992
Christos Koukouvinos Jennifer Seberry

The Hadamard conjecture is that Hadamard matrices exist for all orders 1,2, 4t where t 2 1 is an integer. We have obtained the following results which strongly support the conjecture: (i) Given any natural number q, there exists an Hadamard matrix of order 2 q for every s 2 [2log2 (q 3)]. (ii) Given any natural number q, there exists a regular symmetric Hadamard matrix with constant diagonal of...

2009
V. B. Afanassiev A. A. Davydov V. V. Zyablov

The following two important problems are considered in the paper: constructing a low density parity check code on a bipartite graph and rapid encoding of this code. For a given constituent code, the first problem solving is reduced to constructing and investigation of parameters of the matrix describing connections of two vertex subsets of a regular bipartite graph (biadjacency matrix). It is c...

Journal: :iranian journal of basic medical sciences 0
fatemeh sadeghi department of pharmaceutics, school of pharmacy and pharmaceutical research center, mashhad university of medical sciences, mashhad, iran fatemeh mosaffa school of pharmacy, mashhad university of medical sciences, mashhad, iran hadi afrasiabi garekani department of pharmaceutics, school of pharmacy and pharmaceutical research center, mashhad university of medical sciences, mashhad, iran

objective eudragits are widely used polymers in the production of oral sustained release dosage forms. the application of these polymers in the production of inert insoluble matrices has been investigated. however the effect of particle size, compaction force and presence of aerosil 200 as a glidant on the properties of eudragit rs and rl matrices prepared by direct compression of their physica...

2007
Stephan Dahlke

Some speciic box splines are reenable functions with respect to nn expanding integer scaling matrices M satisfying M n = 2I: Therefore they can be used to deene a multiresolution analysis and a wavelet basis associated with these scaling matrices. In this paper, we construct biorthogonal wavelet bases for this special subclass of box splines. These speciic bases can also be used to derive wavel...

Journal: :IEEE Trans. Signal Processing 2011
Meng Wang Weiyu Xu Ao Tang

This paper investigates the uniqueness of a nonnegative vector solution and the uniqueness of a positive semidefinite matrix solution to underdetermined linear systems. A vector solution is the unique solution to an underdetermined linear system only if the measurement matrix has a row-span intersecting the positive orthant. Focusing on two types of binary measurement matrices, Bernoulli 0-1 ma...

2015
Walid Hachem Adrien Hardy Jamal Najim

We study the asymptotic behavior of eigenvalues of large complex correlated Wishart matrices at the edges of the limiting spectrum. In this setting, the support of the limiting eigenvalue distribution may have several connected components. Under mild conditions for the population matrices, we show that for every generic positive edge of that support, there exists an extremal eigenvalue which co...

Journal: :JSW 2010
Qingsheng Zhu Yanxia Wang Huijun Liu

In this paper we present an auto-detection corner based on eigenvalues product of covariance matrices (ADEPCM) of boundary points over multi-region of support. The algorithm starts with extracting the contour of an object, and then computes the eigenvalues product of covariance matrices of this contour at various regions of support. Finally determine automatically peaks of the graph of eigenval...

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