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L'UMTS est un nouveau standard de radiocommunications mobiles destiné à résoudre les problèmes des actuels réseaux de deuxième génération, proches localement de la saturation et limités dans leur offre de services multimédias par les faibles débits utiles supportés. L'UMTS représente une rupture technologique importante et nécessite un effort particulier pour la réa- lisation des équipements, car la complexité des traitements à effectuer a augmenté dans des proportions considérables. Les terminaux 3G, par exemple, devront embarquer une puissance de calcul supérieure de plus d'un ordre de grandeur à celle embarquée par leurs prédécesseurs. Après avoir introduit l'UMTS et une de ses interfaces radios, le Wideband CDMA, nous avons identifié l'estimation par le terminal du canal radiomobile par lequel a transité le signal émis par la station de base comme étant une des tâches susceptibles d'entraîner le plus grand nombre d'opérations à effectuer. Une solution originale à ce problème est proposée sous la forme d'un algorithme d'estimation itérative de canal à suppression de trajets. La complexité calculatoire de cet algorithme a l'inconvénient majeur de varier avec le carré du facteur de suréchantillonnage, ce qui empêche de travailler avec une valeur élevée de celui-ci, et par consé- quent ne permet pas d'obtenir une grande précision quant à l'estimation des instants d'arrivée des trajets. Ce problème est résolu en introduisant une version optimisée de cet algorithme, dont la complexité varie linéairement avec le facteur de suréchantillonnage. Conserver une com- plexité raisonnable tout en travaillant avec des facteurs de suréchantillonnage élevés devient réaliste, ce qui permet d'accéder à coût égal à une précision plus élevée qu'avec l'algorithme origininal. De plus, cette optimisation simplifie les opérations élémentaires effectuées par l'algo- rithme, ce qui a pour conséquence de rendre son implémentation sur une architecture hybride matérielle-logicielle plus efficace que son implémentation sur un seul processeur de signal. Une méthodologie de conception au niveau système est ensuite proposée pour réaliser cette architecture hybride dans un but de prototypage rapide. Cette méthodologie, bâtie autour du logiciel N2C, de la société CoWare, utilise un langage de haut niveau, surensemble du langage C auquel ont été rajoutées les constructions nécessaires pour décrire des architectures matérielles. L'algorithme est partitionné en une partie logicielle s'exécutant sur un cœur de DSP ST100 et un coprocesseur réalisé en logique câblée. De sévères incompatibilités logicielles ont empêché la réalisation de cette architecture hybride selon la méthodologie proposée, mais des résultats intéressants ont néanmoins été obtenus à partir d'une implémentation purement logicielle de l'algorithme proposé. L'architecture obtenue avec l'application des premières étapes de la méthodologie proposée à l'algorithme d'estimation de canal est décrite, ainsi que quelques suggestions faites à la société CoWare, Inc. pour l'amélioration de leur outil. Enfin, l'adéquation de la méthodologie proposée à un environnement de prototypage rapide est discutée et des pistes pour la réalisation d'un éventuel démonstrateur sont données.

Sony’s Support Application team wanted an experiment to be conducted by which they could determine if it was suitable to use Machine Learning to improve the quantity and quality of search results of the in-application search tool. By improving the quantity and quality of the results the team wanted to improve the customer’s journey. A supervised machine learning model was created to classify articles into four categories; Wi-Fi & Connectivity, Apps & Settings, System & Performance, andBattery Power & Charging. The same model was used to create a service that categorized the search terms into one of the four categories. The classified articles and the classified search terms were used to complement the existing search tool. The baseline for the experiment was the result of the search tool without classification. The results of the experiment show that the number of articles did indeed increase but due mainly to the broadness of the categories the search results held low quality.

Submitted by Raniere Barreto (raniere.barros@ufvjm.edu.br) on 2018-10-26T18:24:24Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) matheus_leao_melo.pdf: 2496459 bytes, checksum: d05e0424e48fc7c4bfc6ec5b57683faa (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-11-10T10:37:32Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) matheus_leao_melo.pdf: 2496459 bytes, checksum: d05e0424e48fc7c4bfc6ec5b57683faa (MD5) / Made available in DSpace on 2018-11-10T10:37:32Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) matheus_leao_melo.pdf: 2496459 bytes, checksum: d05e0424e48fc7c4bfc6ec5b57683faa (MD5) Previous issue date: 2016 / A presente disserta??o debate a import?ncia da comunica??o cient?fica, as tecnologias e softwares utilizados como forma de dissemina??o do conhecimento cient?fico-acad?mico. Neste universo surge a necessidade cria??o de um buscador de metadados de portais de peri?dicos cient?ficos eletr?nicos e reposit?rios institucionais de Acesso Aberto de pa?ses membros do MERCOSUL, promovendo uma inova??o e integra??o da Comunica??o Cient?fica dos pa?ses do bloco. H? mais de tr?s s?culos os pesquisadores utilizam as revistas cient?ficas e as bibliotecas universit?rias para resguardar, divulgar, disseminar, validar, promover e repercutir os seus estudos e pesquisas, mas tamb?m como um banco de dados e propaga??o cient?fica para a cria??o de novos estudos a partir dessas difus?es cient?ficas. Com o exponencial crescimento da produ??o cient?fica e a sua propaga??o na internet, na virada do s?culo, como ferramenta de dissemina??o da produ??o cient?fica, surge o desafio da cria??o de um instrumento pragm?tico de organiza??o e busca de pesquisas cient?ficas dos pa?ses membros do MERCOSUL: O Buscador B?ho. / Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Tecnologia, Sa?de e Sociedade, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / ABSTRACT This dissertation discusses the importance of scientific communication, technologies and software used as a means of dissemination of scientific and academic knowledge. In this universe there is a need create a search engine for electronic journals portals metadata and institutional repositories Open Access MERCOSUR member countries, promoting innovation and integration of Scientific Communication of the bloc's countries. For more than three centuries researchers use scientific journals and university libraries to protect, disclose, disseminate, validate, promote and pass on his studies and research, but also as a database and scientific spreading to the creation of new studies from these scientific broadcasts. With the exponential growth of scientific production and its spread on the Internet at the turn of the century, as dissemination tool of scientific production, the challenge of creating a pragmatic instrument of organization and search of scientific research of the MERCOSUR member countries arises: The B?ho Searcher.

M. Tech. (Department of Information Technology, Faculty of Applied and Computer Sciences), Vaal University of Technology. / Tracking involves information gathering, manipulation and proving information on the location of a set item. Many single or hybrid technologies – Global Positioning System (GPS), Radio Frequency (RF), Bluetooth (BLT) or Wireless Fidelity (WiFi) – have been used to provide tracking information of an asset of interest. The use of hybrid technology in tracking assets has proven to be effective if the selection of the technologies used is done correctly. This study used a hybrid of GPS and Radio Frequency technologies to track assets of interest because of their characteristics for use inside and outside a building. In this study GPS geo-fencing was used and time interval was used to receive data from the technology. Heuristic methodology, which enabled us to divide a room into sections, was used, where testing was done in sections in a room with different types of material, such as bricks, wood or metal, and the RF signal degradation, called attenuation, was measured. A straight-line distance and a sum of distances at 30-minute intervals were calculated to determine how far the asset had travelled from the point of origin to the new position. A distance of less than 10 metres was ignored. Geofencing was used to trigger an event since it indicates that the asset has crossed the permitted boundary. An RF reader was placed at the door to identify when the asset left a building and triggered an event. A model was used for searching for a missing item in a room. The results showed that the system was able to produce two distances, one straight-line distance and the other the approximate sum distance travelled by the asset in 30-minute intervals. The RF model was able to find an asset in a room filled with different materials.

Made available in DSpace on 2016-04-26T20:24:13Z (GMT). No. of bitstreams: 1 Lygia Maria Moreno Molina Henrique.pdf: 615418 bytes, checksum: c987b4fdb53a154420790f23c0ef6d1f (MD5) Previous issue date: 2016-02-22 / This work has as its central point the study of the right to protection of personal data and how this right is related to the flow of personal data, driven by dynamic new Internet economy. Reflectively, we will analyze issues relevant to the topic and to the current moment, starting with a social approach, broader and more comprehensive, which unfolded form will culminate in the development of the protection of personal data, both in international law, as in Brazil. Also, it will be object of study the use of data as a raw material for the provision of the services offered by companys.com, in order to create innovation and increase competition between them. As well as, we will demonstrate which options of control and protection of personal data the consumer / user has to protect their privacy. Conclusively, by evaluation of brazilian legislative propositions about personal data protection, we will issue a critical-reflective judgment about the failures and successes of each one front to the topics relevant to the protection of personal data / Essa dissertação tem como ponto central o estudo do direito à proteção de dados pessoais e de que modo este direito se relaciona com a circulação de dados pessoais, impulsionada pela nova e dinâmica economia da Internet. De forma reflexiva, analisaremos questões pertinentes ao tema e ao momento atual, iniciando com uma abordagem social, mais ampla e abrangente, a qual de forma desdobrada culminará na evolução da tutela de dados pessoais, tanto na legislação internacional, como na brasileira. Será ainda, objeto de estudo a utilização dos dados como matéria-prima para prestação dos serviços das empresas.com, de modo a criar inovações e acirrar a concorrência entre estas. Assim como, vamos demonstrar quais as opções de controle e tutela em relação à circulação de dados pessoais o consumidor/usuário possui a resguardar sua privacidade. De modo conclusivo, mediante a avaliação das proposituras legislativas brasileiras acerca da proteção de dados pessoais, emitiremos um juízo crítico-reflexivo sobre as falhas e êxitos de cada propositura, frente aos temas relevantes à tutela de dados pessoais