L'objectif de cette thèse est de démontrer la faisabilité d'oscillateurs contrôlés en tension (O.C.T.) rivalisant en termes de bruit de phase avec les O.C.T. fabriqués en technologies III V. Cet O.C.T. doit être complètement intégré, adresser la bande Ku et utiliser la technologie QUBiC4X de NXP Semiconductors. Les travaux de cette thèse sont articulés autour de trois chapitres principaux, le premier revient sur les bases fondamentales à la compréhension des phénomènes inhérents aux composants électroniques et présents dans les oscillateurs plus particulièrement. Le second explique, en s'appuyant sur l'analyse des formes d'ondes et sur des calculs analytiques, les choix retenus en termes d'architecture pour la partie active ainsi que pour le résonateur afin de minimiser la conversion du bruit AM/PM et atteindre les meilleures performances possibles en bruit de phase. Il décrit les quatre versions d'O.C.T. réalisés et analyse les résultats de simulations post-layout obtenus pour justifier leur fabrication. Il présente notamment une architecture innovante utilisant les avantages d'un montage cascode ainsi qu'un résonateur à trois inductances différentielles imbriquées les unes dans les autres. Le troisième chapitre détaille les choix de design faits lors du dessin des masques ainsi que les résultats de mesures obtenus pour les quatre versions fabriquées. Enfin, il se termine par une énumération des recherches menées dans le but d'expliquer les différences observées entre les résultats de mesure et de simulation. / The thesis goal is to demonstrate the feasibility of voltage controlled oscillator (VCO) challenging the VCOs using III-V technologies regarding phase noise performances. This VCO must be fully integrated, target the Ku-band and use the QUBiC4X process from NXP Semiconductors. This thesis work is based on three main chapters, the first one reviews the fundamentals to understand the intrinsic phenomena in electronics components and more particularly in oscillators. The second explains, by using the waveforms analysis and analytical demonstrations, the choices made regarding both the active part and the resonator architecture in order to minimize the AM/PM noise conversion and then to reach the best phase noise performances. It describes the four versions of the realized VCOs and analyzes the post-layout simulations results to justify their fabrications. It shows more specifically an innovative architecture using the advantages of a cascode configuration and a resonator based on three interlocked differential inductors. Finally, the third chapter focuses on the masks' layout and measurements results of the four VCOs. It also details the investigations made to explain the differences between measurements and simulations.

Orientador: Thomas Patrick Dwyer / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciências Humanas / Made available in DSpace on 2018-08-26T12:32:10Z (GMT). No. of bitstreams: 1 Andrade_AldairOliveirade_D.pdf: 4368124 bytes, checksum: 81087b83c5a8a7b1cd387097bb972460 (MD5) Previous issue date: 2014 / Resumo: A presente pesquisa aborda o processo de reconstrução da vida de migrantes na cidade de Manaus, que chegaram à capital a partir da década de 1960, onde desempenham ou desempenharam atividades no Polo Industrial de Manaus (PIM). A intenção deste trabalho é, a partir das narrativas dos migrantes, situar a construção do projeto migratório, os dilemas que envolveram o ato de migrar, a chegada à capital, a inserção no mundo do trabalho, a construção de novos espaços de sociabilidade, dentre outras questões, as quais nos ajudam a identificar se o projeto construído na origem se consolidou no destino. Para tanto, lançamos mão da pesquisa bibliográfica, o que inclui também as matérias jornalísticas e os relatórios oficiais do poder público, bem como da pesquisa de campo. Para a coleta de dados, realizamos entrevistas semiestruturadas com trabalhadores que atuam ou atuaram no PIM, com base nos critérios previamente estabelecidos, no intuito de conhecer como era a vida na origem, o que determinou a decisão de migrar, como se deu o deslocamento, como foi o estabelecimento em Manaus, quais as principais dificuldades enfrentadas, como se tornaram industriários, como é a vida no espaço fabril e como eles construíram novas relações sociais. O estudo evidenciou que nem todos construíram seus próprios projetos migratórios, visto que eram crianças e adolescentes, que tiveram a decisão tomada por pais ou responsáveis. A presença de familiares e conhecidos na capital foi um elemento fundamental para subsidiar a decisão de migrar. Os migrantes se tornaram industriários somente após a chegada à Manaus, por isso, nesta pesquisa adota-se o termo migrantes industriários. Ao comparar a vida na origem e no destino, podemos inferir que houve melhoria de vida, sendo que os principais objetivos do projeto migratório, que eram estudo, trabalho e moradia, foram alcançados para a maioria, embora os relatos não deixem de revelar a dureza da vida de um industriário, que tem a maior parte de seu tempo consumida pelo trabalho / Abstract: This research addresses the process of migrants¿ life reconstruction in the city of Manaus who arrived in the capital from the 1960¿s on, where they developed activities in the Industrial Pole of Manaus (PIM). The intention of this work is, from the migrants¿ narratives, to place the construction of the migratory project, the dilemmas involved in the act of migrating, the arrival in the capital, their entering in the market place, the construction of new spaces of sociability, among other questions, which help us identify if the project in its origin was consolidated at the end. To achieve that, the literature we used also includes newspaper articles and official reports of public institutions, as well as field research. For data collection, we conducted semi-structured interviews with workers who worked at the PIM, based on previously established criteria, in order to know what life was like at the beginning, what determined their decisions to migrate, how the displacement took place, the way their establishment in Manaus occurred, which were the main difficulties they faced, how they became industry workers, what was life like in the factory space and how they built their new workplace relationships. The study showed that not all of them created their own migration projects, since they were children and teenagers who had the decision made by their parents or guardians. The presence of family members and acquaintances in the capital was a key element to support the decision to migrate. Migrants have become industrial workers only after their arrival in Manaus, therefore, this research adopts the term migrant industrial workers. Comparing life in the origin and destination, we can infer that there was an improvement in the migrants¿ lives, and the main objectives of the migration project, which were the study, the work and the housing, were achieved by most of them, although the reports do not fail to reveal the hard life of an industrial worker, who has most of his/her time consumed by the job / Doutorado / Ciencias Sociais / Doutor em Ciências Sociais

The theme of this diploma work is to introduce spectrum analzyer Agilent CSA N1996A to readers. In the work there are explained in detail all measuring functions of this machine, there are also mentioned all engineering characteristics and described all operating elements of this machine. In the diploma work is also mentioned the basice division of spectrum analyzers and their principles of activity. In the pracical part there are proposed the measurement assignments for hearers of subject MEMT, where is the possibility to use already mentioned spectrum analyzer. Including of the assignments there are also theoretical analysis of each assignment, their diagrams of wiring, practical metering and interpretation of results.

Hardware updates and feature updates of electronic equipment can take a long time for market implementations. Technology tends to become obsolete by the time the update is launched into the market. In the automotive industry, the service entertainment module (SEM) containing the core logic for Amplitude Modulation (AM), Frequency Modulation (FM), and Digital Audio Broadcasting (DAB) radio tuners lack the facility for software-based updates. One of the major challenges for the infotainment/entertainment modules in the automotive industry is to have a single radio module that can support software updates and multistandard radio technologies from different countries. Software Defined Radios (SDR) can be used to deal with this problem as SDR is a platform to prototype or develop new communication protocols as well as add new features or capabilities to the existing protocols without requiring major capital expenditures. SDR is a cost-effective radio platform because it can update radio equipment on the fly and provide additional functionality without requiring hardware modifications. By means of software instead of hardware updates, development loops could be shortened and manufacturing costs are reduced. In this thesis, a thorough comparison of a hardware-based tuner and a software-based tuner is performed in the presence of AM/FM/DAB modulated signals based on the metrics specified in ETSI EN 303 345-1 including sensitivity, adjacent channel suppression, far-off channel suppression, cross-modulation, third-order intermodulation, etc. After performance evaluation and comparison, it can be proven that the SDR based system can perform as well as the hardware tuner used in the SEM unit. / Hårdvaruuppdateringar och funktionsuppdateringar av elektronisk utrustning kan ta lång tid för marknadsimplementeringar. Teknik tenderar att bli föråldrad när uppdateringen lanseras på marknaden. Inom fordonsindustrin saknar servicunderhållningsmodulen (SEM) som innehåller kärnlogiken för Amplitude Modulation (AM), Frequency Modulation (FM) och Digital Audio Broadcasting (DAB) radiostemmare möjligheten för programvarubaserade uppdateringar. En av de största utmaningarna för infotainment/ underhållningsmodulerna i bilindustrin är att ha en enda radiomodul som kan stödja programvaruuppdateringar och multistandardradioteknologier från olika länder. Programvarudefinierade radioapparater (SDR) kan användas för att hantera detta problem eftersom SDR är en plattform för att prototypa eller utveckla nya kommunikationsprotokoll samt lägga till nya funktioner eller kapaciteter till de befintliga protokollen utan att kräva stora investeringar. SDR är en kostnadseffektiv radioplattform eftersom den kan uppdatera radioutrustning i farten och ge ytterligare funktionalitet utan att kräva hårdvaruändringar. Med hjälp av mjukvara istället för hårdvaruuppdateringar kan utvecklingsslingor förkortas och tillverkningskostnaderna reduceras. I denna avhandling utförs en grundlig jämförelse av en hårdvarubaserad tuner och en mjukvarubaserad tuner i närvaro av AM / FM / DABmodulerade signaler baserade på mätvärden som specificeras i ETSI EN 303 345-1 inklusive känslighet, intilliggande kanalsuppression, avlägsna kanalundertryckning, tvärmodulering, tredje ordning intermodulering etc. Efter utvärdering och jämförelse av prestanda kan det bevisas att det SDR-baserade systemet kan fungera liksom hårdvarutunern som används i SEM-enheten.

No description available.

Made available in DSpace on 2015-04-14T13:47:08Z (GMT). No. of bitstreams: 1 381563.pdf: 13870360 bytes, checksum: af0b9b6df640291a4ecc3d03c6416965 (MD5) Previous issue date: 2006-08-10 / O Brasil se envolveu no seq?estro de seis argentinos do grupo Montoneros, entre 1974 e 1980, quando vigorou o pacto secreto entre as ditaduras militares do Cone Sul para perseguir advers?rios pol?ticos. Os guerrilheiros ligados ao Peronismo foram capturados no Paran?, no Rio de Janeiro e na fronteira do Rio Grande do Sul. Removidos para a Argentina, foram torturados e mortos em pris?es clandestinas, os corpos desapareceram. O epis?dio ? um dos mais reveladores da Opera??o Condor, como foi chamada a articula??o entre os aparatos repressivos da Argentina, do Brasil, do Chile, da Bol?via, do Paraguai e do Uruguai. Tamb?m evidencia como o Terrorismo de Estado praticado pelos regimes autorit?rios ultrapassou as fronteiras entre os pa?ses.

Made available in DSpace on 2015-04-14T14:27:08Z (GMT). No. of bitstreams: 1 418189.pdf: 1586821 bytes, checksum: 7ecc3da182a1c889a20983cc06121e1a (MD5) Previous issue date: 2014-03-21 / This dissertation has as main objective to test empirically what are the main determinants of foreign direct investment flows (FDI) for developing economies and in transition and whether for the region of Latin America and Caribbean, those same determinants remains or not. To support the empirical part of the job, chapter two, which is divided into two sections, started showing the evolution theory of the main approaches about the FDI including the Theory of Industrial Organization of Hymer (1976), the Theory of Internalization of Buckley and Casson (1976), the Product Cycle Theory of Vernon (1966), the Eclectic Theory of Dunning (1988, 1993 and 2000) and the New Trade Theory. And in the second section of the chapter, we reviewed a total of twenty articles with emphasis on empirical determinants of FDI flows to developing countries and in transition and for the countries of Latin America and Caribbean. In the third chapter will appear the evolution of the global FDI flows with two separate analyses: one for developing countries and in transition and one for the countries of Latin America and Caribbean. In the fourth chapter, using a methodology of panel data, regressions were estimated for a wide sample of 118 countries being 27 of Latin America and Caribbean for the period 1996-2011. The results show that there are differences in factors that determine inflows of FDI. Giving evidence that while in developing countries and in transition the main determinants are the search for markets (Market-seeking), and search for efficiency (Efficiency-seeking). The economies of Latin America and Caribbean prevails just search for markets (Market-seeking). / Esta disserta??o tem como objetivo principal testar empiricamente quais os principais fatores determinantes dos fluxos de Investimento Direto Externo (IDE) para as economias em desenvolvimento e em transi??o e saber se para a regi?o da Am?rica Latina e Caribe, esses mesmos determinantes se mant?m ou n?o. Para dar apoio ? parte emp?rica do trabalho, o cap?tulo dois, que est? dividido em duas se??es, iniciou apresentando a evolu??o te?rica das principais abordagens sobre o IDE compreendendo a Teoria da Organiza??o Industrial de Hymer (1976), a Teoria da Internaliza??o de Buckley e Casson (1976), a Teoria do Ciclo do Produto de Vernon (1966), a Teoria Ecl?tica de Dunning (1988, 1993 e 2000) e a Nova Teoria do Com?rcio. E na segunda se??o do cap?tulo, foram revisados um total de vinte artigos emp?ricos com ?nfase nos determinantes dos fluxos de IDE para os pa?ses em desenvolvimento e em transi??o e para os pa?ses da Am?rica Latina e Caribe. No terceiro cap?tulo ser? apresentada a evolu??o dos fluxos mundiais de IDE com duas analises separadas: uma para os pa?ses em desenvolvimento e em transi??o e outra para os pa?ses da Am?rica Latina e Caribe. No quarto cap?tulo, utilizando uma metodologia de dados em painel, foram estimadas regress?es para uma ampla amostra composta por 118 pa?ses sendo 27 da Am?rica Latina e Caribe para o per?odo 1996-2011. Os resultados mostram que existem diferen?as nos fatores que determinam os fluxos de entrada de IDE. Dando evid?ncias de que enquanto nos pa?ses em desenvolvimento e em transi??o os principais determinantes s?o a busca por mercados (Market-seeking), e busca por efici?ncia (Efficiency-seeking). Nas economias da Am?rica Latina e Caribe prevalece apenas a busca por mercados (Market-seeking).

Submitted by Edisangela Bastos (edisangela@ufpa.br) on 2013-03-06T22:32:07Z No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_DispersaoSementesSauins.pdf: 475569 bytes, checksum: 66bb665e5686709ccfde8b3b667fc097 (MD5) / Approved for entry into archive by Ana Rosa Silva(arosa@ufpa.br) on 2013-03-08T15:04:35Z (GMT) No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_DispersaoSementesSauins.pdf: 475569 bytes, checksum: 66bb665e5686709ccfde8b3b667fc097 (MD5) / Made available in DSpace on 2013-03-08T15:04:35Z (GMT). No. of bitstreams: 2 license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Dissertacao_DispersaoSementesSauins.pdf: 475569 bytes, checksum: 66bb665e5686709ccfde8b3b667fc097 (MD5) Previous issue date: 2012 / Quantificar a sombra de sementes gerada por um dispersor, ou seja, a maneira como as sementes são distribuídas em função do tempo que o dispersor as retém e de como este se desloca pelo habitat, é etapa essencial para avaliar os impactos do dispersor na estruturação e funcionamento de populações e comunidades vegetais. Este é o primeiro estudo com o primata S. bicolor como dispersor de sementes e teve como objetivo investigar o padrão de formação de sombra de sementes e sua relação com o padrão de deslocamento da espécie. O deslocamento de quatro grupos de S. bicolor foi monitorado em três fragmentos florestais em Manaus, Amazonia Central. O posicionamento dos animais em um sistema de trilhas foi registrado em intervalos de cinco minutos, ao longo de todo período de atividade, cinco dias ao mês durante o mínimo de 15 meses cada grupo. O tempo de retenção de sementes foi estimado registrando-se o tempo de ingestão, de defecação e o número de sementes de cinco espécies de frutos cultivados ofertados a quatro indivíduos criados em cativeiro. Sombras de sementes foram estimadas através da combinação de dados do padrão de deslocamento com dados do tempo de retenção de sementes. Para cada grupo, foram obtidas a distância média de dispersão e a proporção da área de uso ocupada em uma base mensal, e a relação destas duas variáveis foi verificada através de uma regressão linear simples. O tempo de retenção de sementes variou de 27 a 295 minutos (N = 394), sendo que mais da metade das sementes ficam retidas em até duas horas no trato digestivo, e o número médio de sementes por defecação foi de 3,5 (± 3,7; N = 111). Probabilidades de dispersão de sementes para fora das imediações da planta-matriz ultrapassam 80%, além de incluírem distâncias maiores do que 1 km. Apenas para dois grupos foi verificado que há relação entre a proporção da área de uso e as distâncias de dispersão sendo que para um destes o poder explanatório do modelo foi menor do que 20%. Os resultados indicam que S. bicolor dispersa sementes de forma efetiva e, assim como outros calitriquíneos, pode contribuir para a estruturação e regeneração de ecossistemas florestais. / Quantifying the seed shadow generated by a disperser, which is the way seeds are distributed as a function of both the time seeds are retained in its digestive tract and of its ranging patterns through the habitat, is a key step to assess the impact of the seed disperser on structuring and functioning of plant populations and communities. This is the first study concerning the primate S. bicolor as a seed disperser and aimed to investigate the formation pattern of seed shadow in relation to the ranging patterns of the species. The moving of four groups of S. bicolor was monitored in three forest fragments in Manaus, Central Amazonia. The position of the animals in a trail grid was registered at five minutes intervals over the whole period of activity for five days a month over at least 15 months each group. The seed retention time were estimated by records of the time of ingestion, defecation and number of seeds of five species of cultivated fruits offered to four captive tamarins. Seed shadows were estimated by combining ranging patterns data with the seed retention time data. To each group, mean dispersal distance and the proportion of the home range used were obtained on a monthly basis, and their relation was accessed by a simple linear regression. The seed retention time ranged from 27 to 295 minutes (N = 394), with more than half of the seeds being retained up to two hours in the gut, and average number of seeds per defecation was 3,5 (± 3,7; N = 111). Probabilities of seed dispersal out of the vicinity of the parent plant are greater than 80% besides including distances greater than 1 km. For only two groups was verified a relation between the proportion of home range used and the dispersal distance, on a monthly basis, and one of them the explanatory power of the model reached less than 20%. The results indicate that S. bicolor disperses seeds effectively and, like other callitrichines, may contribute to the structuring and regeneration of forest ecosystems.

Submitted by Glauber de Assunção Moreira (glauber.moreira@ufba.br) on 2018-09-21T14:56:17Z No. of bitstreams: 1 Tese Ricardo Barreto Biriba - Parintins cidade Ritual.pdf: 37463798 bytes, checksum: b02b1996a9a02756f1870257f5081d43 (MD5) / Approved for entry into archive by Marly Santos (marly@ufba.br) on 2018-09-24T20:59:56Z (GMT) No. of bitstreams: 1 Tese Ricardo Barreto Biriba - Parintins cidade Ritual.pdf: 37463798 bytes, checksum: b02b1996a9a02756f1870257f5081d43 (MD5) / Made available in DSpace on 2018-09-24T20:59:56Z (GMT). No. of bitstreams: 1 Tese Ricardo Barreto Biriba - Parintins cidade Ritual.pdf: 37463798 bytes, checksum: b02b1996a9a02756f1870257f5081d43 (MD5) / Parintins CIDADE RITUAL: BOI-BUMBÁ PERFORMANCE E ESPETACULARIDADE, concentrado na linha temática Matrizes Culturais na Cena Contemporânea do Curso de Doutorado do Programa de Pós Graduação em Artes Cênicas da Escola de Teatro e Escola de Dança da Universidade Federal da Bahia trata dos processos de transformação ocorridos nos Bois- Bumbás de Parintins, Amazonas. Estes Grupos incorporaram novas tecnologias desenvolvidas por artistas locais, como recursos cênicos para as suas apresentações, que foram intensificadas com a criação do Festival Folclórico no ano de 1965. Situado na investigação de questões relativas a estudos etnocenológicos sobre a linguagem cênica dos Bois-Bumbás Garantido e Caprichoso enquanto fenômenos da cultura amazônica; discute a transculturação, a performance e o ritual enquanto processos dialógicos, entre os valores culturais locais, o imaginário indígena e as novas tecnologias na cena espetacular do Festival Folclórico de Parintins, e, como este interfere na construção da identidade cultural parintinense; contribui para estudos das formas cênicas, métodos e processos criativos de manifestações da cultura brasileira com perfil étnico. Este trabalho traz também para o âmbito acadêmico das artes, estudos a partir de análises dos métodos e dos processos criativos e das linguagens que compõem as cenas dessas manifestações com foco de atenção situado na condição de um espetáculo-ritual-performático e suas relações que se estabelecem entre o artista, a obra de arte e o público. / Parintins Ritual City: Boi-bumbá, Perfomance and Spectacularity concentrated on the themattic line culltural matrixes on the comtemporary scene of the doctorate cource for the Post Graduation Program in Scenic Arts at the Theater School and Dance School at Bahia Federal University deals with the processes of transformation occurred on the Bois-Bumbás of Parintins, Amazon. These groups have incorporated new technologies developed by local artists, as scenic resources to their presentations, that were intensified with the creation of the Folk Festival in 1965. Situated in the investigation of issues related to ethnocenological studies about the scenic language for Bois-Bumbás Garantido and Caprichoso as Amazonic culture phenomena. It discusses the transcultural and transformation processes, performance and ritual, as dialogic processes, among the local cultural values, the indian imaginary and the new technologies on the spectacular scene of the Parintins Folk Festival and as it interferes on the Parintinian cultural identity construction. It contributes to the studies of the scenic forms, methods and creative processes of manifestations with the ethnical profile of the Brazilian Culture. This work also brings to the arts academic extent studies starting from the analysis of the methods and creative processes and of styles that compose the scenes of the manifestation focusing on the condition of the performing ritual spectacle and its relations that are established among the artist, the work of art and the public.

International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / Aerospace Report No. TOR-0059(6110-01)-3, section 1.3.3 outlines the design and performance requirements of SGLS (Space Ground Link Subsystem) uplink services equipment. This modulation system finds application in the U.S. Air Force satellite uplink commanding system. The SGLS signal generator is specified as an FSK (Frequency Shift Keyed)/AM (Amplitude Modulation)/PM (Phase Modulation) sub-carrier modulator. GDP Space Systems has implemented, on a single 6U-VME card, a SGLS signal generator. The modulator accepts data from several possible sources and uses the data to key one of three FSK tone frequencies. This ternary FSK signal is amplitude modulated by a synchronized triangle wave running at one half the data rate. The FSK/AM signal is then used to phase modulate a tunable HF (High-Frequency) sub-carrier. A digital design approach and the availability of integrated circuits with a high level of functionality enabled the realization of a SGLS signal generator on a single VME card. An analog implementation would have required up to three rack-mounted units to generate the same signal. The digital design improve performance, economy and reliability over analog approaches. This paper describes the advantages of a digital FSK/AM/PM modulation method, as well as DDS (Direct Digital Synthesis) and digital phase-lock techniques.