In this work we present a formalization of the QR decomposition, an algorithm which decomposes a real matrix A in the product of another two matrices Q and R, where Q is an orthogonal matrix and R is invertible and upper triangular. The algorithm is useful for the least squares problem, i.e. the computation of the best approximation of an unsolvable system of linear equations. As a side-product...

The regulation of the circadian rhythm is relayed from the central nervous system to the periphery by melatonin, a hormone synthesized at night in the pineal gland. Besides two melatonin G-coupled receptors, mt(1) and MT(2), the existence of a novel putative melatonin receptor, MT(3), was hypothesized from the observation of a binding site in both central and peripheral hamster tissues with an ...

-This learning built-up a QR-based U-Learning Material Production System (QR-ULMPS) thathas lecturers with associate education tool to encourage level students listed in a very arts course. QR-ULMPS was specifically designed to support the event of u-learning materials and make an enticing context-aware u-learning settin analysis style g for college students. A quasi experimental was accustomed...

The main aim of the project is to propose a QR-based U-Learning Material Production System (QR-ULMPS) to develop context-aware u-learning environment during outdoor learning activities. As portability and mobility are necessary factors for an authentic outdoor learning experience, our QR-ULMPS needed to incorporate versatile mobile devices. With the help of word net tool and natural language pr...

This paper describes a Multilevel Incomplete QR (MIQR) factorization for solving large sparse least-squares problems. The algorithm builds the factorization by exploiting structural orthogonality in general sparse matrices. At any given step, the algorithm finds an independent set of columns, i.e., a set of columns that have orthogonal patterns. The other columns are then block orthogonalized a...

Methyl jasmonate (MeJA) spray treatments were applied to the kale varieties 'Dwarf Blue Curled Vates' and 'Red Winter' in replicated field plantings in 2010 and 2011 to investigate alteration of glucosinolate (GS) composition in harvested leaf tissue. Aqueous solutions of 250 µM MeJA were sprayed to saturation on aerial plant tissues four days prior to harvest at commercial maturity. The MeJA t...

The QR-algorithm is a renowned method for computing all eigenvalues of an arbitrary matrix. A preliminary unitary similarity transformation to Hessenberg form is indispensible for keeping the computational complexity of the QRalgorithm applied on the resulting Hessenberg matrix under control. The unitary factor Q in the QR-factorization of the Hessenberg matrix H = QR is composed of n − 1 rotat...

QR-32 is a regressive murine fibrosarcoma cell clone which cannot grow when they are transplanted in mice; QRsP-11 is a progressive malignant tumor cell clone derived from QR-32 which shows strong tumorigenicity. A recent study showed there to be differentially expressed up-regulated and down-regulated proteins in these cells, which were identified by proteomic differential display analyses by ...

Quercetin (QR) is a strong antioxidant and has been shown to reduce oxidative stress in the long-term treatment of streptozotocin (STZ)-induced diabetes in animal models. Antioxidants have significant effects on spermatogenesis, sperm biology and oxidative stress, and changes in antioxidant capacity are considered to be involved in the pathogenesis of chronic diabetes mellitus. The present stud...

In this paper an approach to adaptive IIR ltering based on a pseudo-linear regression and applying an iterative QR matrix decomposition is developed. In simulations, the algorithm has shown a high stability and excellent convergence properties. The derivation of the IIR-QR adaptive lter is straightforward and the computational complexity of the algorithm is comparable to the FIR-QR adaptive alg...