mation about the Collins and Sivers mechanisms, which are signals for the transverse parton distribution function hq1 in convolution with the Collins fragmentation function H⊥,q 1 , and of the Sivers distribution function f ⊥,q 1T with the spin-averaged fragmentation function Dh q , respectively. Furthermore, both the momentum and helicity distributions of the strange quark sea have been extrac...

We study the performance of several alternatives for implementing extendible arrays, which allow random access to elements stored in them, whilst allowing the arrays to be grown and shrunk. The study not only looks at the basic operations of grow/shrink and accessing data, but also the effects of memory fragmentation on performance.

The Horizontal Fragmentation (HF) is a process for reducing the number of disk access to execute a query by reducing the number of irrelevant objects accessed. In this paper, we present horizontal fragmentation based on a set of queries, and develop strategies for two versions of HF: primary and derived. Primary horizontal fragmentation of a class is performed using predicates of queries access...

A short review of theoretical and experimental results on fragmentation in e + e − annihilation is presented. Starting with an introduction of the concept of fragmentation functions in e + e − annihilation, aspects of scaling violation, multiplicities, small and large x, longitudinal, gluon, light and heavy quark fragmentation are summarized.

The conversion of tropical forest ecosystems to agro-pastoral ecosystems and other land uses continues unabated in Latin America. The present document constitutes a comparative study in which the degree of forest fragmentation through a 23-year period (between 1973 and 1996) was evaluated in two areas located within the same ecological region, but in two different countries (Colombia and Ecuado...

Ecological theory predicts that fragmentation aggravates the effects of habitat loss, yet empirical results show mixed evidences, which fail to support the theory instead reinforcing the primary importance of habitat loss. Fragmentation hypotheses have received much attention due to their potential implications for biodiversity conservation, however, animal studies have traditionally been their...

Introduction: tegrity is the most important component for transferring genetic information Sperm DNA fragmentation is considered a component of male infertility. Its assessment comprises conventional semen analysis of which emphasis is placed on its evaluation in fertility clinics. In this study, we investigate the relationship between sperm parameters of motility, morphology, concentratio...

Background: It is stated that pentoxifyline can improve sperm motility and suggested to use in ART for asthenozoospermia. But, probable effect of this drug on sperm DNA in unknown. Our main goal was to evaluate the impact of pentoxifyline on sperm DNA fragmentation. Materials and Methods: Thirty eight asthenozoospermic patients were selected for this prospective study. After direct swim-up, spe...

The first probe of the correlation of the T-odd one-particle fragmentation function responsible for the left–right asymmetry of fragmentation of a transversely polarized quark is done by using the 1991-95 DELPHI data for Z → 2-jet decay. Integrated over the fraction of longitudinal and transversal momenta, this correlation is of 1.5% order, which means order of 13% for the analyzing power. A ra...