Thesis (M.A.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains iv, 32 p. Vita. Includes abstract. Includes bibliographical references (p. 30-31).

Submitted by Marco Antônio de Ramos Chagas (mchagas@ufv.br) on 2017-06-20T16:31:34Z No. of bitstreams: 1 texto completo.pdf: 443327 bytes, checksum: 5dacc858720c3f3f3562b9c76b172d07 (MD5) / Made available in DSpace on 2017-06-20T16:31:34Z (GMT). No. of bitstreams: 1 texto completo.pdf: 443327 bytes, checksum: 5dacc858720c3f3f3562b9c76b172d07 (MD5) Previous issue date: 2001-02-06 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Objetivou-se avaliar o controle biológico de B. cinerea por C. rosea, como componente do manejo integrado do mofo cinzento em roseiras, com as seguintes hipóteses de trabalho: i- C. rosea pode colonizar endofiticamente, diferentes tecidos de roseira, em diferentes estádios de desenvolvimento; ii- C. rosea possui habilidade saprofítica para se estabelecer na comunidade microbiana dos restos culturais de roseira; iii- C. rosea coloniza eficientemente ferimentos nos tecidos de roseira e limita a colonização do patógeno; e iv- C. rosea reduz eficientemente a produção de inóculo de B. cinerea em condições de cultivo protegido. Clonostachys rosea germinou, estabeleceu endofiticamente e esporulou abundantemente, em tecidos maduros, senescentes ou mortos. A germinação foi mais alta em tecidos mortos (>98% de conídios germinados) que em folhas e pétalas maduras e senescentes (31% a 47%). Quando folhas maduras foram feridas antes da aplicação de C. rosea, o número de conídios germinados dobrou, mas a área com esporulação do fungo não se alterou e foi alta (>75%). Em folhas maduras, aplicou-se C. rosea imediatamente ou até 24 h após ferimento, e, a seguir, inoculou-se B. cinerea; a germinação do patógeno reduziu-se em até 41% e a esporulação em mais de 99%. O período de 24h de alta umidade, antes das aplicações em folhas senescentes e mortas, estimulou o crescimento de fungos indígenas presentes e reduziu a esporulação de C. rosea e B. cinerea. Em folhas mortas, a associação de fungos indígenas com C. rosea contribuiu para o controle do patógeno. Entretanto, quando aplicados em alta densidade de esporos, Penicillium sp. e Alternaria alternata interagiram negativamente com C. rosea e reduziram sua eficiência em 16 e 21%, respectivamente. Em folhas, estudou-se o efeito de infestações de pulgões (Macrosiphum rosae L.) e de ácaros (Tetranychus urticae Koch) no crescimento e esporulação de C. rosea e B. cinerea e na supressão do patógeno pelo antagonista. A germinação dos dois fungos foi maior nas folhas previamente infestadas por pulgões e ácaros. Naaplicação combinada C. rosea+B. cinerea, em folhas não infestadas, o antagonista suprimiu a germinação do patógeno em mais que 50%, mas, nas infestadas, a germinação do patógeno foi alta (>75%). A infestação com pulgões e ácaros aumentou significativamente a esporulação de C. rosea, independentemente da presença de B. cinerea, e a de B. cinerea, quando inoculado isoladamente. Entretanto, na aplicação combinada, o antagonista suprimiu quase que completamente a esporulação do patógeno, tanto nas folhas infestadas quanto nas não infestadas. Em condições de casa de vegetação, avaliaram-se os efeitos de C. rosea na esporulação de B. cinerea e de variáveis climáticas sobre a colonização dos restos culturais de roseiras (‘Sônia’ e ‘Red Success’) por ambos os fungos. Em ambas as cultivares, a esporulação do patógeno foi consistentemente reduzida em 30 a 50% nos tratamentos onde se aplicou C. rosea (C. rosea e C. rosea+mancozeb, para ‘Red Success’, e C. rosea, para ‘Sônia’). Na aplicação de C. rosea+mancozeb, a esporulação do antagonista reduziu-se em 10 a 15%, ao longo do ensaio, apesar de não ter reduzido significativamente o controle da esporulação de B. cinerea. Nos tratamentos onde foi aplicado, C. rosea estabeleceu-se eficientemente nos restos culturais de roseira, em vista do incremento da sua esporulação a cada avaliação, pelo alto valor da área abaixo da curva de esporulação do antagonista e pela redução crescente na esporulação de B. cinerea. Entretanto, não houve redução significativa da incidência da doença, provavelmente, porque as aplicações de C. rosea iniciaram-se ao final de janeiro, quando a epidemia do mofo cinzento já estava em estádio avançado; não se realizaram práticas de saneamento ao longo do ensaio; e nem todas as roseiras da casa de vegetação foram tratadas com C. rosea, o que permitiu a multiplicação do patógeno. Entretanto, espera-se que, em casas de vegetação, mesmo sob condições favoráveis ao patógeno, a aplicação de C. rosea ao longo de vários ciclos produtivos possa reduzir a população de B. cinerea e, conseqüentemente, a incidência do mofo cinzento em botões. A umidade relativa máxima foi o principal fator de estímulo à colonização de ambos os fungos, por sua influência direta no teor de umidade dos restos culturais; enquanto a umidade relativa mínima e a temperatura máxima reduziram a colonização de ambos, por estarem associadas ao dessecamento dos restos. O fato de os requerimentos ambientais para os dois fungos serem similares é relevante em termos do estabelecimento de estratégias de controle biológico de B. cinerea. / To evaluate the biological control of B. cinerea by C. rosea as a component of the integrated management of rose gray mould, the following hypothesis were tested: i- C. rosea is able to grow endophyticaly on different rose tissues at different developmental stages; ii- C. rosea is able to establish on the microbial community of rose debris; iii- C. rosea is able to colonize wounds and restrict the growth of the pathogen in rose tissues; and iv- C. rosea can inhibit B. cinerea sporulation on rose debris in commercial greenhouse. Clonostachys rosea germinated, established, and sporulated abundantly on mature, senescent, and dead tissues. Germination was higher on dead tissues (>98%) than on mature and senescent tissues (31% to 47%). On wounded mature leaves, germination of C. rosea was twice higher than on non-wounded leaves. The area covered by conidiophores was not affected by wounds and was high (>75%) on all instances. On mature leave that were wounded, inoculated with C. rosea immediately or until 24 h after wounded, and challenge inoculated with the pathogen, the germination of B. cinerea was reduced by 41% and the sporulation on more than 99%. When senescent and dead leaves were subjected to a 24h of high humidity before the inoculations, the growth of indigenous fungi was stimulated and the sporulation of both C. rosea and B. cinerea was reduced. The association of the indigenous fungi with C. rosea contributed for the control of the pathogen on dead leaves. However, when applied on high inoculum density, Penicillium sp. and Alternaria alternata interacted negatively with C. rosea and reduced the antagonist efficiency by 16 and 21%, respectively. The effects of aphids (Macrosiphum rosae L.) and mites (Tetranychus urticae Koch) infestations on growth and sporulation of C. rosea and B. cinerea and on the control of the pathogen by the antagonist were evaluated on rose leaves. When applied alone, the germination of both fungi was greater on infested leaves than on the control leaves. In the combined application, C. rosea inhibited the germination of the pathogen on non-infested leaves by 50%. However, on infested leaves the germination of B. cinerea was high (>75%) despite the presence of the antagonist. Similarly, the infestations of aphids and mites increased the sporulation of both B. cinerea and C. rosea when each fungus was applied alone. However, in the combined application C. rosea inhibited the sporulation of B. cinerea on more than 99% on infested and non-infested leaves. The reduction on B. cinerea sporulation by C. rosea and the effects of climatic factors on pathogen and antagonist growth on rose debris of ‘Sônia’ and ‘Red Success’ plants were evaluated in a plastic covered greenhouse. For both cultivars, B. cinerea sporulation was consistently reduced by 30 to 50% on the treatments were C. rosea was applied (C. rosea and C. rosea+mancozeb, for ‘Red Success’, and C. rosea, for ‘Sônia’). When C. rosea was associated with mancozeb, fungal sporulation was reduced by 10 to 15%, but the efficiency of the antagonist in controlling pathogen sporulation was not significantly reduced. C. rosea established efficiently on rose debris, as verified by the increment of the antagonist sporulation at each evaluation, the high values of area under sporulation curve, and the crescent reduction on B. cinerea sporulation. However, the incidence of gray mould was not significantly reduced, probably due to three main reasons: the applications of C. rosea started by the end of January, when gray mould epidemic was advanced; no sanitation practices were performed during the experiment; and the production of B. cinerea spores on border plants (untreated) in the greenhouse. The daily maximum relative humidity was the main factor that stimulated the debris colonization by both fungi, probably by its influence on the humidity content of the debris. The daily minimal relative humidity and maximum temperature, probably because of their association to the debris dryness, reduced the growth of both fungi. The find that the environmental requirements for C. rosea and B. cinerea are similar can be of paramount importance to establish a biocontrol strategy against the pathogen. From the present and previous studies, the continuous applications of C. rosea can be expected to markedly reduce inoculum production by B. cinerea and, consequently, gray mould incidence in rose production systems, regardless the favorable conditions for the pathogen in the greenhouse. / Tese importada do Alexandria

Made available in DSpace on 2014-12-17T14:55:09Z (GMT). No. of bitstreams: 1 MarceloRS.pdf: 2073600 bytes, checksum: e2793a47da1f2a66e002106dee02b631 (MD5) Previous issue date: 2008-12-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / The characteristic properties of the fractal geometry have shown to be very useful for the construction of filters, frequency selective surfaces, synchronized circuits and antennas, enabling optimized solutions in many different commercial uses at microwaves frequency band. The fractal geometry is included in the technology of the microwave communication systems due to some interesting properties to the fabrication of compact devices, with higher performance in terms of bandwidth, as well as multiband behavior. This work describes the design, fabrication and measurement procedures for the Koch quasi-fractal monopoles, with 1 and 2 iteration levels, in order to investigate the bandwidth behavior of planar antennas, from the use of quasi-fractal elements printed on their rectangular patches. The electromagnetic effect produced by the variation of the fractal iterations and the miniaturization of the structures is analyzed. Moreover, a parametric study is performed to verify the bandwidth behavior, not only at the return loss but also in terms of SWR. Experimental results were obtained through the accomplishment of measurements with the aid of a vetorial network analyzer and compared to simulations performed using the Ansoft HFSS software. Finally, some proposals for future works are presented / As propriedades ?nicas da geometria fractal t?m-se mostrado bastante ?teis para a constru??o de filtros, superf?cies seletivas em freq??ncia, circuitos sintonizados e antenas, possibilitando solu??es otimizadas para uma variedade de usos comerciais na faixa de microondas. A geometria fractal est? inclu?da na tecnologia dos sistemas de comunica??o por microondas devido a algumas propriedades interessantes para a fabrica??o de dispositivos compactos, com desempenho superior em termos de largura de banda, bem como, comportamento multibanda. Neste trabalho, descrevem-se os procedimentos para o projeto, constru??o e medi??o de monopolos quase-fractais de Koch, com n?veis 1 e 2, projetados para se investigar o efeito produzido na largura de banda de antenas planares, a partir da utiliza??o de estruturas quase-fractais nos seus patches retangulares. O efeito eletromagn?tico da varia??o do n?vel dos fractais, bem como, da miniaturiza??o das estruturas, foram avaliados. Tamb?m foram realizadas parametriza??es com o intuito de se verificar o comportamento da largura de banda, tanto para a perda de retorno quanto para o SWR. Os resultados foram obtidos atrav?s de medi??es realizadas por um analisador de redes vetorial e por meio de simula??es no Ansoft HFSS. Algumas propostas para trabalhos futuros foram citadas

Fractal is a recursively-generated object describing a family of complex shapes that possess an inherent self-similarity in their geometrical structure. When used in antenna engineering, fractal geometries provide multi-band characteristics and lowering resonance frequencies by enhancing the space filling property. Moreover, utilizing fractal arrays, controlling side lobe-levels and radiation patterns can be realized. In this thesis, the performance of Koch curve as antenna is investigated. Since fractals are complex shapes, there is no well&ndash / established for mathematical formulation to obtain the radiation properties and frequency response of Koch Curve antennas directly. The Koch curve antennas became famous since they exhibit better frequency response than their Euclidean counterparts. The effect of the parameters of Koch geometry to antenna performance is studied in this thesis. Moreover, modified Koch geometries are generated to obtain the relation between fractal properties and antenna radiation and frequency characteristics.

Made available in DSpace on 2014-12-17T14:55:39Z (GMT). No. of bitstreams: 1 RobsonHCM.pdf: 3964230 bytes, checksum: b66d62a3ab0ff3d24888963581fbde31 (MD5) Previous issue date: 2009-08-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This work presents a theoretical and numerical analysis for the cascading of frequency selective surfaces, which uses rectangular patches and triangular Koch fractals as elements. Two cascading techniques are used to determine the transmission and reflection characteristics. Frequency selective surfaces includes a large area of Telecommunications and have been widely used due to its low cost, low weight and ability to integrate with others microwaves circuits. They re especially important in several applications, such as airplane, antennas systems, radomes, rockets, missiles, etc.. FSS applications in high frequency ranges have been investigated, as well as applications of cascading structures or multi-layer, and active FSS. Furthermore, the analyses uses the microwave circuit theory, with the Floquet harmonics, it allows to obtain the expressions of the scattering parameters of each structure and also of the composed structure of two or more FSS. In this work, numeric results are presented for the transmission characteristics. Comparisons are made with experimental results and simulated results using the commercial software Ansoft Designer? v3. Finally, some suggestions are presented for future works on this subject / Este trabalho apresenta uma an?lise te?rica e num?rica do cascateamento de superf?cies seletivas de frequ?ncia, que usa patches retangulares e fractais de Koch triangular como elementos. Para isto, s?o utilizadas duas t?cnicas de cascateamento, visando ? determina??o das caracter?sticas de transmiss?o e de reflex?o. Superf?cies seletivas de frequ?ncia abrangem uma grande ?rea das Telecomunica??es e t?m sido largamente utilizadas devido a seu baixo custo, peso reduzido e possibilidade de se integrar com outros circuitos de microondas. Elas s?o especialmente importantes em diversas aplica??es, como avi?es, sistemas de antenas, radomes, foguetes, m?sseis, etc. Aplica??es de FSS em faixas de freq??ncia elevadas t?m sido investigadas, assim como aplica??es destas estruturas em cascata ou multicamadas, e FSS ativas. Especificamente, as an?lises usam a teoria de circuitos de microondas, em conjunto com os harm?nicos de Floquet, permite a obten??o das express?es dos par?metros de espalhamento de cada estrutura e tamb?m da estrutura composta por duas ou mais FSS. Nesse trabalho, s?o apresentados resultados num?ricos para as caracter?sticas de transmiss?o. S?o feitas compara??es com resultados experimentais e tamb?m com resultados simulados utilizando o software comercial Ansoft Designer? v3. S?o apresentadas, ainda, sugest?es de continuidade do trabalho

Orientador: Helena Jank / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes / Made available in DSpace on 2018-08-19T13:28:55Z (GMT). No. of bitstreams: 1 Barros_CassianodeAlmeida_D.pdf: 5341810 bytes, checksum: 99a81dac22a72cb50b776b11a769f334 (MD5) Previous issue date: 2011 / Resumo: Este trabalho propõe a abordagem hermenêutica da teoria fraseológica de Heinrich Christoph Koch (1749-1816), considerada, desde o século XVIII, a mais clara e completa sistematização fraseológica de sua época. O objetivo é compreender historicamente como se manifesta a relação entre a gramática musical, a retórica e a estética nessa teoria, investigando as técnicas de invenção, concatenação e desenvolvimento do pensamento musical elaboradas para a persuasão, além da natureza das próprias unidades de pensamento musical, como a frase, o período, estrutura e forma. A fim de reconstituir o horizonte de sentido dessa teoria e compreender a relação entre suas partes constituintes, são examinados os tratados, ensaios e artigos de Koch e os estudos atuais relacionados. O estudo do pensamento musical setecentista e de seus mecanismos criativos conduz a uma compreensão particular do repertório neles fundamentado, na medida em que recupera parâmetros próprios dessa produção musical para os quais nossa percepção não é sensível. Isso se torna evidente na última parte do trabalho, na qual a teoria fraseológica de Koch é aplicada na análise do primeiro movimento do quarteto de cordas em sol maior, KV 387 de W. A. Mozart, obra recomendada por Koch como modelar de seu gênero / Abstract: This work proposes the hermeneutical approach of Heinrich Christoph Koch's (1749-1816) phraseological theory, considered the most clear and complete phraseological systematization of his time since eighteenth century. The objective consists in achieving a historical comprehension of how the relation among musical grammar, rhetoric and aesthetics manifests itself in this theory. It will be investigated the techniques of creation, concatenation and development of musical thought, the influence of persuasion in the application of these techniques and the nature of the units of musical thought, such as phrase, period, structure and form. In order to reconstruct the horizon of meaning of this theory and to comprehend the relation among its constituent parts, it will be examined Koch's treatises, essays and articles and the contemporary studies related to them. The study of the eighteenth century musical thought and its creative procedures conducts to a particular comprehension of the repertoire founded on them, in so far as this study recovers the own parameters of this musical production, to which our perception is not sensible. It becomes evident in the last part of this work, in which Koch's phraseological theory is applied in an analysis of the first movement of W. A. Mozart's string quartet in G major, KV 387, a piece that is recommended by Koch as being a model for its genre / Doutorado / Fundamentos Teoricos / Doutor em Música

Heinrich Koch completed his treatise in 1793, a pioneering work regarding the musical phrase as well as a sonata form description (lacking that term). Composition of Opus 18 began in 1798, a momentous project for several reasons in Beethoven's early career. Here, the theories expressed in Koch's Versuch are taken as an analytic springboard into a thorough analysis of the first movement of the quartet published no. 3, which was the first composed; additionally, nos. 1 and 6 are explored to a lesser degree. This study in phrase-analysis demonstrates significance in the fundamental ideas of Koch as applied to a masterwork of the turn of the 19th century.

The aim of the study is to examine how different factors,such as views on how knowledge is produced and howlearning takes place, effect the way an academic librarymanages space. This is done by looking into how a specificlibrary, namely Library & Learning Resources (LLR) at theUniversity of Borås, by re-planning the building’s structure,design and functions, can support the students’ differentstudying habits. The analysis is performed by using a theoreticalperspective built by a model first created by thearchitect Daniel Koch. The model is designed to look uponhow space produces meaning and knowledge. To this I haveadded a socio-cultural perspective on learning.Koch’s theoretical model is used as a method with the aim tostudy how the library is structured and designed. The modelis used to analyse three types of space distribution; in space,by space and through space. After analysing the materialwith these different ways of distribution the results processedonce more to obtain an approach to how knowledge isproduced and to see how that corresponds with a socioculturallearning perspective.It is concluded that the LLR has an open approach to howknowledge is produced and that the library supports thesocio-cultural way in which the students learn and conducttheir studies in. The Library has an open and flexible viewon how different functions in the library can be used and theaim is to support the many different ways in which studiesare conducted. / Program: Bibliotekarie

1795 erschien in Erfurt das „Journal der Tonkunst“ des Rudolstädter Hofmusikers und Musiktheoretikers Heinrich Christoph Koch. Koch bestückte das Journal großenteils mit eigenen Texten. Insbesondere kreisen sie um das Konzept von Mode in der Musik, die Koch als Gefahr für die Kultur seiner Zeit betrachtet. Darüber hinaus gibt der Text einen Überblick über Facetten des Musikdiskurses im ausgehenden 18. Jahrhundert, die von ästhetischen über praktische Erwägungen bis zu lexikalischen Daten reichen.

Bibliography: leaves 201-208 / iv, 208 leaves ; 31 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide, Dept. of English, 1992