京都大学 / 0048 / 新制・課程博士 / 博士(農学) / 甲第17898号 / 農博第2021号 / 新制||農||1017(附属図書館) / 学位論文||H25||N4794(農学部図書室) / 30718 / 京都大学大学院農学研究科森林科学専攻 / (主査)教授 水山 高久, 教授 神﨑 護, 教授 谷 誠 / 学位規則第4条第1項該当 / Doctor of Agricultural Science / Kyoto University / DFAM

Submitted by Fernanda Rodrigues de Lima (fernanda.rlima@ufpe.br) on 2018-07-04T20:32:47Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) DISSERTAÇÃO Marcio Francisco Alves de Souza.pdf: 9117283 bytes, checksum: a424671e2699cf987637d3885a709ab9 (MD5) / Made available in DSpace on 2018-07-04T20:32:47Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) DISSERTAÇÃO Marcio Francisco Alves de Souza.pdf: 9117283 bytes, checksum: a424671e2699cf987637d3885a709ab9 (MD5) Previous issue date: 2008-09-12 / CAPES / IFMS (Instantaneous Frequency Measurement Subsystem) é um sistema que monitora, de forma simultânea, todas as freqüências da sua banda de operação, sem a necessidade de fazer uma varredura de espectro, detectando instantaneamente os sinais desconhecidos. A velocidade e precisão na identificação de sinais irradiados é um parâmetro vital para a moderna Electronic Warfare (eletrônica com fins militares) e para sistemas inteligentes de supervisão de espetro. O IFMS é largamente usado em dispositivos eletrônicos militares e em sistemas inteligentes para a detecção de sinais desconhecidos sobre uma larga faixa de freqüência, e devido às suas características, possui alta probabilidade de interceptação de sinais em largas bandas de frequência. O componente principal do IFMS são os discriminadores. Cada um deles tem a função de fornecer, em sua saída, um sinal periódico com a freqüência, de modo que esse apresente uma alternância entre bandas rejeitadas e não rejeitadas ao longo da banda de operação. Os sinais de saída dos discriminadores dão origem a um código que associa uma palavra binária a uma sub-banda de freqüência. Nessa dissertação, para a implementação dos discriminadores, é proposto um método que utiliza filtros rejeita-bandas. Os filtros são projetados, em microfita, com uso de ressoadores de meio comprimento de onda acoplados a uma linha de transmissão principal. É feita uma análise de alguns tipos de ressoadores, e opta-se por usar o ressoador retangular de loop-aberto. É mostrado que esse ressoador, quando acoplado a uma linha de transmissão principal, pode ser modelado por um filtro rejeita-banda de Butterworth de um pólo. Além disso, é desenvolvida uma técnica para aumentar a largura da banda rejeitada. Sendo assim, consegue-se projetar os filtros, que apresentam larguras de bandas rejeitadas que variam de 125MHz a 1,0GHz. São projetados e fabricados cinco filtros rejeita-bandas para funcionarem como discriminadores de um IFMS de 5 bits, com resolução de 62,5MHz, que opere de 1,9375GHz a 3,9375GHz. Por fim, é feita uma comparação entre os resultados simulados e experimentais. / IFMS (Instantaneous Frequency Measurements Subsystem) is a system that supervises, simultaneously, its whole operation band, without scanning the spectrum, and the frequency detection of unknown signals is instantaneous. Speed and accuracy in the identification of irradiated signals is a vital parameter for modern Electronic Warfare and for intelligent spectrum supervision systems. The IFMS is widely used in military electronic devices and intelligent systems for the detection of unknown signals over a wide frequency range, and because of its characteristics, it has a high probability of intercepting signals in wide frequency bands. The IFMS main component is the discriminator. Every discriminator presents, at its output port, a frequency periodic signal. This signal must alternate between stopping and passing bands. The discriminators output signals generate a binary code, in which every word is associated to a unique frequency sub-band. In this dissertation, in order to project the discriminators, it is proposed a method using stop-bands filters. The filter projects use half-wavelength resonators coupled to a main transmission line. Some types of resonators are analyzed, and the rectangular open-loop resonator is chosen. It’s shown that this resonator, when coupled to a main transmission line, can be modeled by a Butterworth stop-band filter. In addiction, it’s developed a technique to increase the stopping bandwidth. Therefore, one can project the filters that present stopping bandwidth from 125MHz to 1,0GHz. Five stop-bands filters are projected in order to function as discriminators of a 5-bits IFMS. This IFMS operates from 1,9375GHz to 3,9375GHz, and its resolution is 62,5MHz. Finally, a comparison between experimental and simulated results is presented.

No description available.

Submitted by Edineia Teixeira (edineia.teixeira@unioeste.br) on 2018-02-09T17:42:55Z No. of bitstreams: 2 Tiago_Silva2015.pdf: 3596940 bytes, checksum: 8c05a9a3ef6c955497d9a0f4020c2399 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-02-09T17:42:55Z (GMT). No. of bitstreams: 2 Tiago_Silva2015.pdf: 3596940 bytes, checksum: 8c05a9a3ef6c955497d9a0f4020c2399 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2015-03-20 / The objective of this study is to analyze the physical education discipline in the context of professional technical education courses integrated high school of the Federal Institute of Education, Science and Technology of Mato Grosso do Sul - IFMS, between the years 2008 and 2013.To this end, we have established the following specific objectives: a) go through the historical process of education offered within the Federal Professional Education Network, Science and Technology; b) historicizing the political and pedagogical aspects of physical education in Brazil; c) to analyze the discipline physical education in professional education courses secondary technical integrated IFMS. To develop our study, we turn to literature, through primary and secondary sources and empirical research by means of interviews. For the literature study authors that deal with the implementation process of the Federal Vocational Education Network; the creation of the Federal Institutes and the route of physical education in Brazil. In documentary research analyzed the content of Law nº 9.394/1996; Law nº 11.892/2008; Decree nº. 2.208/1997; Decree nº 5.154/2004 and the National Curriculum Guidelines for technical vocational education integrated high school. The presentation of the dissertation is organized into three chapters. In the first, we discuss elements of Brazilian professional education related to the Federal Network of Vocational Education, Science and Technology. We approach political, institutional and pedagogical aspects, especially the high school technical professional education in the path of the federal institutions of education implemented in the years 1909-2013. In the second chapter, rescued the context of physical education as a field of knowledge along the lines of the Industrial Revolution, which took place in Europe between the seventeenth and eighteenth centuries, until its arrival in some schools in Brazil during the nineteenth century and the implementation of pedagogical theories to area. In the third chapter, using data obtained from the interviews and from the guidelines given in the course of projects, we seek to answer the following questions: What is the purpose of physical education in career technical education courses integrated high school? 2) How is it organized this school subject at the Federal Institute of Education, Science and Technology of Mato Grosso do Sul? The results obtained so far exceeded expectations in some aspects, such as the possibility of physical education be developed through research and extension projects; and disruption of evidence with traditional practices that marked the physical education from the early nineteenth century. Furthermore, the data indicate that the area is still short of an effective contribution to walk toward curriculum integration, therefore, both in official discourse as well as the perspectives of teachers, the rational and the practice of this form of education are far sustained perspective in polytechnic or omnilateral education. / O objetivo deste estudo consistiu em analisar a disciplina educação física no contexto dos cursos de educação profissional técnica de nível médio integrado do Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso do Sul - IFMS -, entre os anos de 2008 e 2013. Para tanto, estabelecemos os seguintes objetivos específicos: a) percorrer o processo histórico da educação profissional ofertada dentro da Rede Federal de Educação Profissional, Científica e Tecnológica; b) historicizar os aspectos políticos e pedagógicos da educação física no Brasil; c) analisar a disciplina educação física nos cursos de educação profissional técnica de nível médio integrado do IFMS. Para desenvolvermos nosso estudo, recorremos à pesquisa bibliográfica, por meio de fontes primárias e secundárias, e à pesquisa empírica, por intermédio de entrevistas. Para a pesquisa bibliográfica, estudamos autores que versam sobre o processo de implantação da Rede Federal de Educação Profissional; a criação dos Institutos Federais e o percurso da educação física no Brasil. Na pesquisa documental, analisamos os conteúdos da Lei nº 9.394/1996; Lei nº 11.892/2008; Decreto nº 2.208/1997; Decreto nº 5.154/2004 e as Diretrizes Curriculares Nacionais para a educação profissional técnica de nível médio integrado. A apresentação da dissertação foi organizada em 3 capítulos. No primeiro, discutimos elementos da educação profissional brasileira inerentes à Rede Federal de Educação Profissional, Científica e Tecnológica. Abordamos aspectos políticos, institucionais e pedagógicos, principalmente da educação profissional técnica de nível médio no percurso das instituições federais de ensino implementadas entre os anos de 1909 a 2013. No segundo capítulo, resgatamos o contexto da Educação Física como área do conhecimento nos moldes da Revolução Industrial, ocorrida na Europa entre os séculos XVII e XVIII, até sua chegada em algumas escolas no Brasil, durante o século XIX, e a implantação das teorias pedagógicas para a área. No terceiro capítulo, por meio dos dados obtidos nas entrevistas e a partir das orientações dadas nos projetos de cursos, procuramos responder às seguintes questões: Qual a finalidade da educação física nos cursos de educação profissional técnica de nível médio integrado? Como está organizada esta disciplina escolar no Instituto Federal de Educação, Ciência e Tecnologia do Mato Grosso do Sul? Os resultados obtidos até o momento superaram as expectativas em alguns aspectos, tais como a possibilidade da educação física ser desenvolvida por meio de projetos de pesquisas e extensão; e indícios do rompimento com as práticas tradicionais que marcaram a educação física desde o início do século XIX. Por outro lado, os dados apontaram que a área ainda está aquém de uma efetiva contribuição para caminharmos em direção a integração curricular, pois, tanto no discurso oficial como nas perspectivas dos professores, a fundamentação e a prática desta modalidade da educação estão distantes da perspectiva sustentada na educação politécnica ou omnilateral.

Thesis (M.S.)--Miami University, Dept. of Zoology, 2006. / Title from first page of PDF document. Includes bibliographical references (p. 56-61).

Muscle contraction is a highly fine-tuned process that requires the precise and timely construction of large protein sub-assemblies to form sarcomeres, the individual contractile units. Mutations in many of the genes encoding constituent proteins of this macromolecular machine result in defective functioning of the muscle tissue, and in humans, often lead to myopathic conditions like cardiomyopathies and muscular dystrophies, which affect a considerable number of people the world over. As more information regarding causative mutations becomes available, it becomes imperative to explore mechanisms of muscle development, maintenance and pathology. In striated muscles, contraction is regulated by the thin filament-specific tropomyosin (Tm) – troponin (Tn) complex (Ca2+-binding troponin-C, inhibitory troponin-I and tropomyosin-binding troponin-T). These troponin subunits are present in 1:1:1 ratio on thin filaments, with 1 Tm-Tn complex present on every 7th actin molecule. This stoichiometry is tightly regulated, and disturbances have been associated with functional defects. Each of these proteins has multiple isoforms, whose expression is controlled both spatially and temporally. The expression of specific combination of isoforms confers specific contractile properties to each muscle subtype. Drosophila melanogaster has been a preferred model of choice to study various aspects of muscle development for decades. In this study, the Indirect Flight Muscles (IFMs) of Drosophila have been used to investigate developmental and functional roles of two temporally regulated isoforms of a vital structural and regulatory component of the sarcomere – Troponin T (TnT). On a larger scale, whole genome expression profiles of mutants that are null for major myofbrillar proteins have also been discussed. IFMs serve as an excellent model system to address these questions, owing to the extreme ease of genetic manipulability in this system, and high degree of homology between mammalian and Dipteran cytoskeletal proteins. Chapter 1 covers basics of muscle biology, and the role of TnT in muscle contraction. Phenomena responsible for generating diversity in genes encoding muscle proteins – alternative splicing and isoform switching – have also been discussed. These mechanisms are highly conserved, as are patterns of TnT splicing and isoform expression across phyla. Mutations leading to altered splicing patterns lead to myopathic conditions, and the importance of model systems to study muscle biology has been emphasized. The advantages of studying Drosophila IFMs and a comprehensive overview of IFM development has been covered. The resources and experimental tools used have been described in Chapter 2. Two isoforms of TnT are alternatively spliced in the Drosophila thorax – one containing alternative exon 10a (expressed in adult IFMs and jump muscle); and one containing alternative exon 10b (expressed in pupae and newly eclosed flies). These exons are spliced in a mutually exclusive manner, and defects in splicing have been reported to cause uncontrolled, auto-destructive contractions. In Chapter 3, a splice mutant of TnT, up1, has been discussed, with respect to its developmental profile. Transgenic rescue experiments with two separate isoforms demonstrate rescue at the structural as well as functional level. Transgenic over-expression, however, leads to functional abnormalities, highlighting the importance of stoichiometry in multi-protein complexes. In Chapter 4, molecular signals that bring about the developmentally regulated TnT isoform switch are discussed. A splicing factor, Muscleblind, has been transgenically knocked down in normal and mutant IFMs to study effects on muscle function. Chapter 5 looks at whole genome transcriptional alterations in muscles null for either actin or myosin. All significant expression changes have been classified into categories based on different biological processes, and an attempt to differentiate generic muscle responses from filament-specific responses has been made. In conclusion, the studies have highlighted the importance of TnT isoform switching, and that extended expression of a pupal stage-specific isoform can partially compensate for loss of the adult isoform. Also, in the absence of major myofibrillar proteins, stress response pathways like heat shock response and protein degradation pathways are activated, along with a subset of metabolic responses that are unique to the thin or thick filament systems.