Search results for "ESPACE"
showing 10 items of 218 documents
Convexities and optimal transport problems on the Wiener space
2013
The aim of this PhD is to study the optimal transportation theory in some abstract Wiener space. You can find the results in four main parts and they are aboutThe convexity of the relative entropy. We will extend the well known results in finite dimension to the Wiener space, endowed with the uniform norm. To be precise the relative entropy is (at least weakly) geodesically 1-convex in the sense of the optimal transportation in the Wiener space.The measures with logarithmic concave density. The first important result consists in showing that the Harnack inequality holds for the semi-group induced by such a measure in the Wiener space. The second one provides us a finite dimensional and dime…
Apprend-on mieux en école rurale ?
2007
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Espaces de la crise - crise de l'espace
2019
Comment étudier la production culturelle en Espagne et en Grèce au cours des deux premières décennies du XXIe siècle en faisant abstraction des circonstances socio-économiques et politiques ? La crise qui a frappé ces deux pays, ainsi que les politiques d’austérité qui ont suivi, sont au centre des travaux des chercheurs ici réunis. Dans une perspective d’interdisciplinarité, les quatre éditeurs de ce volume allient leurs compétences et leurs champs de recherche à ceux des autres auteurs – littérature, audiovisuel, histoire et science politique – pour proposer un ensemble de textes qui s’intéressent à la production culturelle grecque et espagnole en période de crise et aux nouvelles relatio…
Sobre la interiorización del espacio social
2009
The author explores the relationships between the exterior world and the inner world in the diverse types of messages and reproducing products of the mass media, analyzing the cultural roots, the ideological, political, and social features that these relationships show. The different reproducing cultural forms create passages and virtual spaces which mediates the space to link it with the inner life. Above all, the author finds that the meditating and informative processing of the public space has a direct link with the modern capitalism in its expansive and privatizing tendency, and it is essential to study today into depth the processes which connect the expansion pf cultural and informat…
The Modern Strategies in the Cyber Warfare
2018
As there is no generally accepted definition for cyber warfare, it is a term that is quite liberally used in describing events and actions in the digital cyber world. The concept of cyber warfare became extremely popular from 2008 to 2010, partly superseding the previously used concept of information warfare which was launched in the 1990s. For some, cyber warfare is war that is conducted in the virtual domain. For others, it is a counterpart to conventional “kinetic” warfare. According to the OECD’s 2001 report, cyberwar military doctrines resemble those of so-called conventional war: retaliation and deterrence. Researchers agree with the notion that the definition of cyberwar should addre…
Blending pieces of Dupin cyclides for 3D modeling and reconstruction : study in the space of spheres
2013
The thesis deals with the blending of canal surfaces in geometric modeling using pieces of Dupin Cyclides. We try to solve a problem of reconstructing real parts manufactured and controlled by the CEA of Valduc. Using the space of spheres in which we can manipulate both points, spheres and canal surfaces, we simplify some problems. This space is represented by a 4-dimensional quadric in a 5-dimensional space, equipped with the Lorentz form, it is the Lorentz space. In the space of spheres, problems of blending canal surfaces by pieces of Dupin cyclides are simplified in linear problems. We give algorithms to make such blends using the space of spheres and after we come back to 3 dimensions …
Streamlining distributed Deep Learning I/O with ad hoc file systems
2021
With evolving techniques to parallelize Deep Learning (DL) and the growing amount of training data and model complexity, High-Performance Computing (HPC) has become increasingly important for machine learning engineers. Although many compute clusters already use learning accelerators or GPUs, HPC storage systems are not suitable for the I/O requirements of DL workflows. Therefore, users typically copy the whole training data to the worker nodes or distribute partitions. Because DL depends on randomized input data, prior work stated that partitioning impacts DL accuracy. Their solutions focused mainly on training I/O performance on a high-speed network but did not cover the data stage-in pro…
Les droits de préemption de la SAFER
2016
SAFER = société d'aménagement foncier et d'établissement rural; National audience; La 4e de couverture indique : "Le droit de préemption de la SAFER est un mécanisme fondamental du droit de l'espace rural. Il plane au-dessus des mutations relatives à des biens ruraux, des terres, des exploitations agricoles ou forestières. Redoutable autant que redouté, l'instrument n'a cessé d'étendre son empire et de se sophistiquer au fil des lois. Le présent ouvrage explore, de manière inédite, tous les arcanes du droit de préemption de la SAFER. La première partie traite de son domaine d'application : quelles sont les opérations que la SAFER peut court-circuiter en faisant valoir ses prérogatives d'ord…
Les locuteurs confirmés du mandarin peuvent-ils concevoir le temps verticalement ?
2022
In Chinese, to express time, we take advantage not only of the horizontal metaphor – for example, qián and hòu (Mandarin 前 and 后 ; French avant and après) –, but also of the vertical metaphor – for example, shàng and xià (Mandarin 上 and 下 ; French haut and bas) –. But does this linguistic phenomenon reveal that confirmed Mandarin speakers can view time vertically? To resolve this problem, we sketched out a field survey; and the result obtained helps us to understand, in a psychosystematic way, the subductions of the so-called vertical characters shàng and xià (Mandarin 上 and 下 ; French haut and bas) in Chinese.
Polarization and suburbanisation in Warsaw
2001
The economic transition in Poland leads to a restructuration of economic activities which affects spatial patterns of cities, especially in Warsaw. Analyzing the location and re-location of population and employment in Poland’s capital allows to enlarge the debate on the suburbanization forms to the Central and Oriental European Countries. The results support the fact that the city center is still largely the most important district in terms of population andemployment, so that in 1999 the city keeps a strong monocentric character. However, from 1994 to 1999, population and employment move towards the Warsaw’s suburbs. Two significant observations, namely the suburbanization of retailing an…