نتایج جستجو برای: تجزیه qr

تعداد نتایج: 115152  

Journal: :Food chemistry 2009
Bradley W Bolling Jeffrey B Blumberg C-Y Oliver Chen

Gastrointestinal (GI) mimic and organic solvent extracts of whole soybean powder (WSP), soy protein concentrate (SPC), and soy protein isolate (SPI) as well as soy isoflavone concentrate (SIC) were analyzed for total phenols; quinone reductase (QR) induction in hepa1c1c7 cells; antioxidant scavenging of DPPH, HOCl, ONOO(-), and O(2) (-.); and total antioxidant capacity via FRAP and ORAC assays....

Journal: :Numerische Mathematik 2010
Marc Van Barel Raf Vandebril Paul Van Dooren Katrijn Frederix

In this paper an implicit (double) shifted QR-method for computing the eigenvalues of companion and fellow matrices will be presented. Companion and fellow matrices are Hessenberg matrices, that can be decomposed into the sum of a unitary and a rank 1 matrix. The Hessenberg, the unitary as well as the rank 1 structures are preserved under a step of the QR-method. This makes these matrices suita...

2014
JIANQIANG GAO LIZHONG XU

In this paper, a kernel fuzzy discriminant analysis minimum distance-based approach for the classification of face images is proposed to deal with face classification problem (we call this method mdkfda/qr as an abbreviation). A superiority of the mdkfda/qr is its computational efficiency and can avoid the singularity. In the proposed method, the membership degree is incorporated into the defin...

2010
TAN SHIANG-YEN LONG YOON FOO ROSNAH IDRUS

The purpose of this paper is to introduce an integrated mobile tagging system, which can be used by consumers to retrieve product information about Genetically Modified Food (GMF) products in the market. In the proposed mobile tagging system, 2 dimensional Quick Response (QR) codes are adopted as the tag for identification purpose. Consumers can use the camera on their mobile phone to capture t...

2014
Omar Ahsan

In this study we examine performance benefits of implementing the QR decomposition in a way that takes advantage of multiple processes or threads. This is done by partitioning the matrix into blocks of a certain number of rows, which is called the blocksize. We examine this algorithm on “tall and skinny” matrices, which are matrices that have a very large number of rows, but comparatively fewer...

2007
Daniel Kressner

Aggressive early deflation [1] has proven to significantly enhance the convergence of the QR algorithm for computing the eigenvalues of a nonsymmetric matrix. It is shown that this deflation strategy is equivalent to extracting converged Ritz vectors from certain Krylov subspaces. As a special case, the single-shift QR algorithm enhanced with aggressive early deflation corresponds to a Krylov s...

2012
Silke Auras Werner de Cruppé Karl Blum Max Geraedts

BACKGROUND Public reporting of hospital quality is to enable providers, patients and the public to make comparisons regarding the quality of care and thus contribute to informed decisions. It stimulates quality improvement activities in hospitals and thus positively impacts treatment results. Hospitals often use publicly reported data for further internal or external purposes.As of 2005, German...

Journal: :Linear Algebra and its Applications 1987

Journal: :Parallel Computing 2014
Robert Andrew Nicholas J. Dingle

Linear least squares problems are commonly solved by QR factorization. When multiple solutions have to be computed with only minor changes in the underlying data, knowledge of the difference between the old data set and the new one can be used to update an existing factorization at reduced computational cost. This paper investigates the viability of implementing QR updating algorithms on GPUs. ...

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