Search results for "Number"
showing 10 items of 3939 documents
On the Influence of PRNGs on Data Distribution
2012
The amount of digital information produced grows rapidly and constantly. Storage systems use clustered architectures designed to store and process this information efficiently. Their use introduces new challenges in storage systems development, like load-balancing and data distribution. A variety of randomized solutions handling data placement issues have been proposed and utilized. However, to the best of our knowledge, there has not yet been a structured analysis of the influence of pseudo random number generators (PRNGs) on the data distribution. In the first part of this paper we consider Consistent Hashing [1] as a combination of two consecutive phases: distribution of bins and distrib…
Dynamic Test Methods for COTS SRAMs
2014
International audience; In previous works, we have demonstrated the importance of dynamic mode testing of SRAM components under ionizing radiation. Several types of failures are difficult to expose when the device is tested under static (retention) mode. With the purpose of exploring and defining the most complete testing procedures and reveal the potential hazardous behaviors of SRAM devices, we present novel methods for the dynamic mode radiation testing of SRAMs. The proposed methods are based on different word address accessing schemes and data background: Fast Row, Fast Column, Pseudorandom, Adjacent (Gray) and Inverse Adjacent (Gray). These methods are evaluated by heavy ion and atmos…
Some classes of finite groups and mutually permutable products
2008
[EN] This paper is devoted to the study of mutually permutable products of finite groups. A factorised group G=AB is said to be a mutually permutable product of its factors A and B when each factor permutes with every subgroup of the other factor. We prove that mutually permutable products of Y-groups (groups satisfying a converse of Lagrange's theorem) and SC-groups (groups whose chief factors are simple) are SC-groups, by means of a local version. Next we show that the product of pairwise mutually permutable Y-groups is supersoluble. Finally, we give a local version of the result stating that when a mutually permutable product of two groups is a PST-group (that is, a group in which every …
Le jeu du meme et de l'autre : "Le Horla" de Guy de Maupassant, un récit "dédoublé" en deux versions
2015
The Horla , written twice, is considered as a masterpiece of a short horror story. Its two versions are still objects of critics’ arguments : some of them see in the second text an amplified and revised version of the first one, whereas others consider the two texts as two separate stories. The paper tries to consider the two Horlas as two complementary parts of the same story ; the first is told by a completely ‘normal’ person who has asked to live in a lunatic asylum, and the second, full of striking, strong emotions, is given by someone who gives up more and more to mental troubles caused by his fear of the unknown, the unnamed, the invisible. Considered in this way, the texts of the two…
Negative Platonism and Maximal Existence in the Thought of Jan Patocka
2010
According to Jan Patocka’s “negative Platonism,” ordinary, or “positive” Platonism makes a fundamental mistake in formulating Plato’s true “discovery,” i.e., the Idea, as a non-objective determination of objectivity, in terms of an ideal object that sensible objects are supposed to imitate. Does this mean that Plato himself misunderstood the epimeleia tēs psychēs and human self-knowledge (exetasis)? Analogously, Patocka states that “classical phenomenology fell victim to its own discoveries and their imprecise formulation.” Is this due to the transcendental subjectivism of Husserlian thought or, rather, to the fact that Husserl could theorize only the modes of givenness of an object? These …
Childhood trauma and substance use underlying psychosis: a systematic review
2020
[EN] Background: Schizophrenia spectrum disorders (SSD) are mental diseases caused by a combination of genetic susceptibility and a number of environmental factors. Among these factors, the role of traumatic events suffered in childhood, as well as that of substance use, have been of particular research interest. Objectives: To conduct a systematic review to clarify whether there is an interaction between childhood trauma and substance use related to the diagnosis or symptoms of SSD. It was also the objective of this review to collate the associations that may exist between the three variables of the study (trauma, substance use and psychosis). Methods: We conducted a systematic search resu…
On the exponent of mutually permutable products of two abelian groups
2016
In this paper we obtain some bounds for the exponent of a finite group, and its derived subgroup, which is a mutually permutable product of two abelian subgroups. They improve the ones known for products of finite abelian groups, and they are used to derive some interesting structural properties of such products.
Cocharacters of group graded algebras and multiplicities bounded by one
2017
Let G be a finite group and A a G-graded algebra over a field F of characteristic zero. We characterize the (Formula presented.)-ideals (Formula presented.) of graded identities of A such that the multiplicities (Formula presented.) in the graded cocharacter of A are bounded by one. We do so by exhibiting a set of identities of the (Formula presented.)-ideal. As a consequence we characterize the varieties of G-graded algebras whose lattice of subvarieties is distributive.
Ulrich bundles on K3 surfaces
2019
We show that any polarized K3 surface supports special Ulrich bundles of rank 2.
The diamond partial order in rings
2013
In this paper we introduce a new partial order on a ring, namely the diamond partial order. This order is an extension of a partial order defined in a matrix setting in [J.K. Baksalary and J. Hauke, A further algebraic version of Cochran's theorem and matrix partial orderings, Linear Algebra and its Applications, 127, 157--169, 1990]. We characterize the diamond partial order on rings and study its relationships with other partial orders known in the literature. We also analyze successors, predecessors and maximal elements under the diamond order.