Made available in DSpace on 2014-06-11T19:29:40Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-03-31Bitstream added on 2014-06-13T18:59:19Z : No. of bitstreams: 1 crepaldi_lg_me_sjrp.pdf: 1446703 bytes, checksum: 5212981cdddeca5acc9e64906c893d50 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Universidade Estadual Paulista (UNESP) / Para simplificar o gerenciamento de computadores, vários sistemas de administração estruturados por conexões físicas adotam técnicas avançadas para gestão de configuração de software. No entanto, a forte ligação entre hardware e o software faz com que haja uma individualização desta gerência, além da penalização da mobilidade e ubiqüidade do poder computacional. Neste cenário, cada computador torna-se uma entidade individual a ser gerenciada, exigindo operações manuais de configuração da imagem de sistema. Tecnologias que oferecem gestão centralizada baseadas em conexões físicas cliente-servidor, combinando técnicas de virtualização com a utilização de sistemas de arquivos distribuídos, refletem a degradação em flexibilidade e facilidade de instalação deste sistema gerenciador. Outras arquiteturas para gerenciamento centralizado que estruturam o compartilhamento de dados através de conexões físicas e dependem do protocolo PXE, apresentam os mesmos impasses descritos anteriormente. Diante das limitações dos modelos de gerenciamento centralizado baseado em conexões físicas, o objetivo deste trabalho é o desenvolvimento de um middleware de comunicação cliente-servidor como parte integrante e necessária para um ambiente de gerenciamento centralizado em redes de comunicações sem fio. Este ambiente, denominado WSE-OS (Wireless Sharing Enviroment ? Operating Systems), é um modelo baseado Virtual Desktop Infrastructure (VDI) que associa técnicas de virtualização e sistema de acesso remoto seguro para criação de uma arquitetura distribuída como base de um sistema de gestão. WSE-OS é capaz de realizar a replicação de sistemas operacionais em um ambiente de comunicação sem fio além de oferecer abstração de hardware aos clientes. O WSE-OS pode substituir o boot local com disco rígido por um boot de uma Imagem de Sistema Única... / To simplify computer management, various administration systems structured with physical connections adopt advanced techniques to manage software configuration. Nevertheless, the strong link between hardware and software makes for an individualism of that management, besides penalizing computational mobility and ubiquity. In this scenario, each computer becomes an individual entity to be managed, requiring manual operations of the system image configuration. Technologies that offer centralized management based on client-server physical connections, combining virtualization techniques with the use of distributed file systems in clusters with distributed processing on network computers reflect the deterioration in flexibility and ease of installation and maintenance of distributed applications. Other architectures for centralized management that structure the sharing of data through physical connections and depend on the PXE protocol, present the same dilemmas described above. Given the limitations models of centralized management based on physical connections, the objective of this project is the development of a middleware for client-server communication as part necessary of an environment for centralized management in wireless communications networks. This environment, called WSE-OS (Wireless Sharing Environment ? Operating Systems), is a model based Virtual Desktop Infrastructure (VDI), which combines virtualization techniques and secure access system for creating a distributed architecture as the basis for a management system. WSE-OS is capable of replicating operating systems in a wireless environment, addition to providing hardware abstraction to clients. The WSE-OS can replace the boot with local hard disk to a boot from SSI (Single System Image) virtualized in server via communication middleware, increasing flexibility and allowing multiple operating systems... (Complete abstract click electronic access below)

L'écrit judiciaire s’analyse à la fois comme un moyen de communication et d'argumentation devant les juridictions répressives françaises. C'est un instrument utile et nécessaire à la bonne administration de la justice qui connaît à l'ère des nouvelles technologies, de profondes mutations. Extrêmement formel dans ses retranchements, ce n’est que par sa présence que le jugement peut trouver force exécutoire. Mais si sa fonction demeure purement probatoire au sein de l’institution judiciaire, sa nature tend aujourd’hui à évoluer. Il est en effet plus aisé d’accéder aux bases juridiques constituées de ces écrits, notamment via l’internet. L’écrit judiciaire se démocratise donc par sa facilité d’accès alors même qu’il reste abscons et que le nombre de ses rédacteurs habilités reste très limité. Présent à tous les niveaux de la procédure pénale française en ce qu’il permet d’assurer le secret (de l’enquête, de l’instruction, des délibérations), l’écrit devient cependant de moins en moins sûr. Informatisé, il est souvent la cible d’intrusion et de convoitise, ce qui pourrait mettre à mal les tribunaux répressifs astreints à la discrétion. Informatique, il permet un archivage et une rapidité de traitement hors pair. Certaines procédures telle celle que l’on retrouve devant la chambre criminelle de la Cour de cassation sont complètement numériques et non plus seulement numérisées, grâce à un bureau virtuel spécialement conçu à cet effet. Le changement de support de l’écrit judiciaire est en définitive ambivalent. Des progrès sans précédent sont à en attendre, de même que les dangers actuels qu’il présente sont préoccupants. L’écrit papier traditionnel ne satisfait plus les besoins de notre temps, or l’écrit électronique n’a pas connu un essor suffisant et n’a pas acquis assez d’autorité pour être accepté comme tel. Le présent travail universitaire se situe lui-même à la croisée des chemins, entre un écrit papier imparfait et un écrit électronique toujours tâtonnant. / Legal writing can be analyzed both as a communication and an argumentation means before the French criminal courts. It is undoubtedly a useful and required way to a good rendering of justice, and moreover a deeply mutating one in our era of new technologies. Formal by essence, it is only through writing that the legal decision can be executed. If it mainly functions as way of proof within the institution, its nature is evolving. The access to databases consisting of these written records is easier through the internet. The legal writing is both more democratic through easier access, and hermetic as its authorized producers are limited in number. While present at every layer of the criminal procedure as it assures its secrecy (from the investigation to the deliberation), it is becoming less safe. Digitalized, it is coveted and sometimes penetrated from the outside, thwarting the obligation of confidentiality that binds the institution. Digital, it allows an unmatched archiving and data-processing. Some procedures, beyond their mere digitalization, are exclusively digital before the “Cour de cassation” criminal chamber, thanks to a tailored virtual desktop. This change in support is double-sided. Unprecedented progress as well as potential threats are to be expected. While the traditional paper writing no longer matches our modern needs, its digital counterpart has not grown enough in usage and authority to be accepted as such. The current dissertation thesis itself is a the crossroads of these trends, between an imperfect paper writing and a still struggling digital writing.