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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

THE FUNCTIONAL PRINT WITHIN THE PRINT MARKET OF THE LATE FIFTEENTH AND EARLY SIXTEENTH CENTURY IN NORTHERN EUROPE AND ITALY

Bennion, Lyndsay M. 07 November 2006 (has links)
No description available.
12

Pumping iron: Exploring the systemic impacts of dietary iron and fat in mice

Predota, Alyssa Mae January 2016 (has links)
No description available.
13

Analysis of the Regulation of Renewable Energies in Peru / Análisis de la Regulación de Energías Renovables en el Perú

Mitma Ramírez, Riquel Ernes 10 April 2018 (has links)
This paper analyzes, from an auction design perspective, the results of the auction of renewable energy that the Peruvian State has initiated since 2008, allowing to show significant results such as the introduction of new technologies for power generation with low CO2 emissions, competitive prices and high levels of competition. Although they are also shown the outstanding issues as the lack of clear direction and heading for future of renewable energy, as well as the need to strengthen institutions to create areas of renewable energies to integrate synergies around the energy transition. / El presente artículo analiza, desde la perspectiva del diseño de subastas, los resultados obtenidos en las subastas de energías renovables que el Estado Peruano ha iniciado desde el año 2008, permitiendo mostrar importantes resultados como la introducción de nuevas tecnologías de generación de electricidad con bajas emisiones de CO2, precios competitivos y altos niveles de competencia. También se muestran los temas pendientes como la falta de dirección y rumbo claros para el futuro de las energías renovables, así como la necesidad de fortalecer las instituciones para crear áreas de energías renovables que integren las sinergiasexistentes en torno a la transición energética.
14

Cadastro ambiental rural: distribuição fundiária de propriedades rurais no Estado do Paraná / Rural environmental registry: rural property distribution in the state of Paraná

Seramim, Ronaldo Jose 17 March 2017 (has links)
Submitted by Neusa Fagundes (neusa.fagundes@unioeste.br) on 2017-09-13T14:48:54Z No. of bitstreams: 1 Ronaldo_Seramim2017.pdf: 9515794 bytes, checksum: bb2e03d22e1ff410d761ac5054a688fa (MD5) / Made available in DSpace on 2017-09-13T14:48:54Z (GMT). No. of bitstreams: 1 Ronaldo_Seramim2017.pdf: 9515794 bytes, checksum: bb2e03d22e1ff410d761ac5054a688fa (MD5) Previous issue date: 2017-03-17 / The Rural Environmental Registry (RER) is a mandatory electronic record for all rural properties, with the objective of forming a database for control, monitoring deforestation of forests and other forms of native vegetation in the country. This study surveyed the CAR data and analyzed the land structure in Paraná, considering that the distribution of properties in space is an important tool for planning and public management. Therefore, the general objective was to diagnose the state land distribution, to identify mesoregions with a greater number of small rural properties and to propose graphic representation as a support tool in the elaboration of policies for sustainable local development. The study has exploratory and descriptive steps, quantitative and qualitative approaches. Four stages were used: bibliographical and documentary research; diagnosis of RER data; mapping of the land distribution and proposition of means of use of the land map, elaborated from the software ArcGis, ArcMap 10.3.1. The survey began in 2015 with bibliographic reviews and follow-up of the data released on RER, ending in January 2017. The results indicated the Southwest, West and Southeast with the highest number of rural properties classified as up to 4 Fiscal Modules (FM). It was possible to show the partial land structure of the State of Paraná through maps, based on farmers' declarations, with the following classifications: rural properties of up to 4 FM; From 4.01 to 15 FM and above 15 FM. From this, maps were drawn up showing the percentages of area and number of registrations; the total number of registrations in the RER and the location of clusters of small rural properties. The contribution presented in this study considers the usefulness of a database that can be used in all regions of the State and other locations in Brazil, in the improvement of maps for defining public policies for sustainable development. / O Cadastro Ambiental Rural (CAR) é um registro eletrônico obrigatório para todos os imóveis rurais, com o objetivo de formar base de dados para controle, monitoramento do desmatamento de florestas e demais formas de vegetação nativa no país. Este estudo fez o levantamento dos dados do CAR e analisou a estrutura fundiária no Paraná, considerando que a distribuição das propriedades no espaço é ferramenta importante para o planejamento e gestão pública. Dessa forma, o objetivo geral foi diagnosticar a distribuição fundiária estadual, para identificar mesorregiões com maior número de pequenas propriedades rurais e propor a representação gráfica como ferramenta de apoio na elaboração de políticas para o desenvolvimento local sustentável. O estudo possui etapas exploratórias e descritivas, de abordagens quantitativas e qualitativas. Foram utilizadas quatro etapas: pesquisa bibliográfica e documental; diagnóstico dos dados do CAR; mapeamento da distribuição fundiária e proposição de meios de utilização do mapa fundiário, elaborados a partir do software ArcGis, ArcMap 10.3.1. A pesquisa iniciou em 2015 com revisões bibliográficas e acompanhamento dos dados divulgados sobre o CAR, encerrando em janeiro de 2017. Os resultados indicaram o Sudoeste, o Oeste e o Sudeste com maior número de propriedades rurais classificadas como até 4 Módulos Fiscais (MF). Foi possível mostrar a estrutura fundiária parcial do Estado do Paraná por meio de mapas, baseados nas declarações dos agricultores, com as seguintes classificações: propriedades rurais de até 4 MF; de 4,01 a 15 MF e acima de 15 MF. A partir disso, foram elaborados mapas ilustrando os percentuais de área e quantidade de cadastros; a quantidade total de cadastros no CAR e a localização dos aglomerados de pequenas propriedades rurais. A contribuição apresentada neste estudo considera a utilidade de uma base de dados que pode ser utilizada em todas as regiões do Estado e outras localidades do Brasil, no aperfeiçoamento de mapas voltados para a definição de políticas públicas de desenvolvimento sustentável.
15

A STUDY ON THE IMPACTS OF RMB EXCHANGE RATE FLUCTUATIONS ON ENTERPRISES’ CROSS-BORDER M&AS

Huang, Yuhui, 0000-0002-1203-1512 January 2021 (has links)
Do renminbi (RMB) exchange rate fluctuations affect cross-border M&A activities of enterprises at the micro level? This paper centers on this major issue, and we study and analyze the impacts of RMB internationalization on the magnitude and success of cross-border M&As. We investigate the impacts of exchange rate changes on the magnitude and success of enterprise-level cross-border M&As by developing nominal exchange rate (NER) and real exchange rate (RER) volatility indicators using data from the Thomson Financial SDC Platinum Merger and Acquisitions database. By applying a variety of indicators and subsample estimates in the study, we find that exchange rate volatility (of either NER or RER) is significantly negatively correlated with enterprise-level cross-border M&As, suggesting that RMB exchange rate movements deter cross-border M&As to some extent; fluctuations in RMB exchange rate have a significant negative impact on the success of cross-border M&As, and the exchange rate risk induced by exchange rate changes increases the risk of cross-border M&As; meanwhile, exchange rate fluctuations have a significant inhibitory effect on conglomerate M&As in addition to horizontal cross-border M&As. In addition, exchange rate fluctuations have a significant inhibitory effect on the profit-oriented cross-border M&As of enterprises in non-state-owned-or-controlled industries. Therefore, we should take prudent actions to prevent the impacts of RMB exchange rate movements on cross-border M&As, actively tap the potential of bilateral investment treaties in securing cross-border M&As, promote coordination between RMB exchange rate regulation iimechanisms and the “go global” strategy, and improve the level of internationalization and competitiveness of Chinese enterprises. / Business Administration/Finance
16

Porovnání obecných a specifických funkčních zátěžových testů u skialpinistů / Comparison of universal and specific functional stress tests of ski- mountaineerers

Formánková, Dita January 2011 (has links)
Title: Comparison of universal and specific functional stress tests of ski-mountaineerers. Objectives: The aim of the thesis is to compare maximal functional parameters of ski-mountaineerers measured during three functional laboratory stress tests. The functional stress tests were set on a treadmill, bicycle ergometer, and on a ski-mountaineer trainer. Consecutively, there is evaluated the meaning of testing of the functional parameters on the ski-mountaineer trainer. Methods: Interindividual and intraindividual descriptive study of 10 ski-mountaineerers of middle and high level performance. Results: The respondents reached the average value of VO2max 63,3 ml.kg-1 .min-1 on the ski-mountaineer trainer, 67,5 ml.kg-1 .min-1 on a treadmill and 66,5 ml.kg-1 .min-1 on a bicycle ergometer. The average measured HR on the ski-mountaineer trainer was 179 heartbeats/min, on the treadmill 185 heartbeats/min and on the bycicle ergometer 183 heartbeats/min. The average value of R reached the value of 1,09 on the ski-mountaineer trainer, 1,18 on the treadmill and 1, 19 on the bycicle ergometer. The highest measured value of VO2max reached on the treadmill was 79,3 ml.kg-1 .min-1 , the bycicle ergometer enabled to reach maximum 76,5 ml.kg-1 .min-1 and the highest value reached on the ski-mountaineer trainer was...
17

Analyse de l’environnement sonore pour le maintien à domicile et la reconnaissance d’activités de la vie courante, des personnes âgées / Sound analysis oh the environment for healthcare and recognition of daily life activities for the elderly

Robin, Maxime 17 April 2018 (has links)
L’âge moyen de la population française et européenne augmente, cette constatation apporte de nouveaux enjeux techniques et sociétaux, les personnes âgées étant les personnes les plus fragiles et les plus vulnérables, notamment du point de vue des accidents domestiques et en particulier des chutes. C’est pourquoi de nombreux projets d’aide aux personnes âgées : techniques, universitaires et commerciaux ont vu le jour ces dernières années. Ce travail de thèse a été effectué sous convention Cifre, conjointement entre l’entreprise KRG Corporate et le laboratoire BMBI (Biomécanique et Bio-ingénierie) de l’UTC (Université de technologie de Compiègne). Elle a pour objet de proposer un capteur de reconnaissance de sons et des activités de la vie courante, dans le but d’étoffer et d’améliorer le système de télé-assistance déjà commercialisé par la société. Plusieurs méthodes de reconnaissance de parole ou de reconnaissance du locuteur ont déjà été éprouvées dans le domaine de la reconnaissance de sons, entre autres les techniques : GMM (Modèle de mélange gaussien–Gaussian Mixture Model), SVM-GSL (Machine à vecteurs de support, GMM-super-vecteur à noyau linéaire – Support vector machine GMM Supervector Linear kernel) et HMM (Modèle de Markov caché – Hidden Markov Model). De la même manière, nous nous sommes proposés d’utiliser les i-vecteurs pour la reconnaissance de sons. Les i-vecteurs sont utilisés notamment en reconnaissance de locuteur, et ont révolutionné ce domaine récemment. Puis nous avons élargi notre spectre, et utilisé l’apprentissage profond (Deep Learning) qui donne actuellement de très bon résultats en classification tous domaines confondus. Nous les avons tout d’abord utilisés en renfort des i-vecteurs, puis nous les avons utilisés comme système de classification exclusif. Les méthodes précédemment évoquées ont également été testées en conditions bruités puis réelles. Ces différentes expérimentations nous ont permis d’obtenir des taux de reconnaissance très satisfaisants, les réseaux de neurones en renfort des i-vecteurs et les réseaux de neurones seuls étant les systèmes ayant la meilleure précision, avec une amélioration très significative par rapport aux différents systèmes issus de la reconnaissance de parole et de locuteur. / The average age of the French and European population is increasing; this observation brings new technical and societal challenges. Older people are the most fragile and vulnerable, especially in terms of domestic accidents and specifically falls. This is why many elderly people care projects : technical, academic and commercial have seen the light of day in recent years. This thesis work wasc arried out under Cifre agreement, jointly between the company KRG Corporate and the BMBI laboratory (Biomechanics and Bioengineering) of the UTC (Université of Technologie of Compiègne). Its purpose is to offer a sensor for sound recognition and everyday activities, with the aim of expanding and improving the tele-assistance system already marketed by the company. Several speech recognition or speaker recognition methods have already been proven in the field of sound recognition, including GMM (Modèle de mélange gaussien – Gaussian Mixture Model), SVM-GSL (Machine à vecteurs de support, GMM-super-vecteur à noyau linéaire – Support vector machine GMM Supervector Linear kernel) and HMM (Modèle de Markov caché – Hidden Markov Model). In the same way, we proposed to use i-vectors for sound recognition. I-Vectors are used in particular in speaker recognition, and have revolutionized this field recently. Then we broadened our spectrum, and used Deep Learning, which currently gives very good results in classification across all domains. We first used them to reinforce the i-vectors, then we used them as our exclusive classification system. The methods mentioned above were also tested under noisy and then real conditions. These different experiments gaves us very satisfactory recognition rates, with neural networks as reinforcement for i-vectors and neural networks alone being the most accurate systems, with a very significant improvement compared to the various speech and speaker recognition systems.
18

Knowledge Development : A dual perspective on Small Firms' development needs

Holfve, Malin, Pekár, Maria January 2010 (has links)
Background: Due to the increasing global competition managers must realize the importance of competitive advantage. This can be done by reconsider how new knowledge should be acquired into the organization.  The importance of new competence creation is well known as a factor for longitudinal success for companies. There is a growing trend in outsourcing human resources activities that used to be in-house. There are numerous training vendors active on the market offering training and development opportunities to small firms. It can therefore be questioned how well the programs offered by the training vendors suites the needs of small firms. Purpose: The purpose of this study is to investigating the perceived training and development needs for small firms. This to understand and overcome the differences in the perception of small firms’ needs, between training vendors and small firms. Method: The research approach of this study is inspired by Grounded theory. Ten in-depth interviews have been performed, four with training vendors and six with small firms. The findings where then coded and categorized to answer the research questions and purpose of the research. Conclusion: From this research it can be seen that both small firms and training vendors do understand the need for training and development of small firms. The areas where training and development is needed for small firms can be summarised to fields of general business management and business specific knowledge. However, this research also identifies barriers that prevent small firms from attending external training. These barriers are cost, time, relevance, pride, flexibility and suitability. Time and cost are the most commonly mentioned barriers, but not the primary barriers that training vendors and small firms should focus on overcoming. Instead we argue that, the efforts should be on the attitude driven barriers: relevance, suitability, flexibility and pride. If you change the attitude among small firms towards training, the perceived benefits will become larger and therefore cost and price will become less important. If the small firms and the training vendors co-operate these barriers could easier be decreased. This could be done by ensuring that the training results in practical tools that the firms use and that they work on building a trustworthy relationship. This will help the small firms to see the relevance and the suitability of the courses offered and the training vendors to understand how to make the courses appear more relevant and suitable to the small firms. / Bakgrund: I och med den ökade globala konkurrensen, måste företagsledare förstå vikten av att inneha och bevara en konkurrens fördel. Detta kan göras genom att fokusera på hur kunskap kan tas in i organisationen. Vikten av kompetens utveckling är en välkänd faktor för långsiktig framgång för företag. Det finns en ökad trend att lägga ut ansvaret för human resources på externa företag, vilket tidigare sköttes inom företaget. Det finns ett stort antal externa utvecklingsleverantörer på marknaden. Det kan därför ifrågasättas hur väl programmen, som de externa träningsleverantörerna erbjuder, passar med behoven hos småföretagarna. Syfte: Syftet med studien är att undersöka uppfattningen om tränings- och utvecklingsbehov hos småföretagare. Detta för att få en förståelse av småföretagarnas behov och komma över skillnaderna i uppfattningarna mellan externa utvecklingsleverantörer och småföretagare. Metod: Forskningsansatsen till den här studien är inspirerad av Grundad teori. Tio djupintervjuer har genomförts, fyra stycken med externa utvecklingsleverantörer och sex stycken med småföretagare. Det empiriska materialet har organiserats genom kodning och kategorisering enligt Grundad teori. Slutsats: Från den här studien kan det ses att både småföretagare och externa utvecklingsleverantörer ser behovet av träning och utveckling i småföretag. De områden där träningsbehov är identifierade kan summers till generell företagsekonomi och specifik kunskap inom företagets bransch. Genom denna studie har dock barriärer som motverkar träning och utveckling i småföretag identifierats. Barriärerna är: kostnad, tid, relevans, stolthet, flexibilitet och lämplighet. Tid och kostnad är de mest nämnda barriärerna, men dock inte de barriärer som primärts bör fokuseras på. Istället anser vi att kraften skall fokuseras på att minska de attityd drivna barriärerna: relevans, lämplighet, flexibilitet och stolthet hos företagarna. Om attityden hos småföretagarna ändras vad gäller träning så kommer den uppfattade fördelen av träning att öka, därmed minskar vikten av barriärerna kostnad och pris. Dessa barriärer kan lättare överbyggas om småföretagarna och de externa utvecklingsleverantörerna samarbetar. Samarbetet kan ske genom att fastställa att det praktiska verktygen, utvecklade av de externa utvecklingsleverantörerna, används av småföretagarna och att en tillförlitlig relation byggs. Detta skulle hjälpa småföretagarna att se relevansen och lämpligheten i de erbjudna kurserna och de externa utvecklingsleverantörerna skulle få en förståelse i hur man kan få kurserna att framstå som relevanta och lämpliga för småföretag.
19

Knowledge Development : A dual perspective on Small Firms' development needs

Holfve, Malin, Pekár, Maria January 2010 (has links)
<p><strong>Background: </strong>Due to the increasing global competition managers must realize the importance of competitive advantage. This can be done by reconsider how new knowledge should be acquired into the organization.  The importance of new competence creation is well known as a factor for longitudinal success for companies. There is a growing trend in outsourcing human resources activities that used to be in-house. There are numerous training vendors active on the market offering training and development opportunities to small firms. It can therefore be questioned how well the programs offered by the training vendors suites the needs of small firms.</p><p><strong>Purpose:</strong><strong> </strong><em>The purpose of this study is to investigating the perceived training and development needs for small firms. This to understand and overcome the differences in the perception of small firms’ needs, between training vendors and small firms. </em></p><p><strong>Method: </strong>The research approach of this study is inspired by Grounded theory. Ten in-depth interviews have been performed, four with training vendors and six with small firms. The findings where then coded and categorized to answer the research questions and purpose of the research.</p><p><strong>Conclusion: </strong>From this research it can be seen that both small firms and training vendors do understand the need for training and development of small firms. The areas where training and development is needed for small firms can be summarised to fields of <em>general business management</em> and <em>business specific knowledge</em>. However, this research also identifies barriers that prevent small firms from attending external training. These barriers are <em>cost</em>, <em>time</em>, <em>relevance</em>, <em>pride</em>, <em>flexibility</em> and <em>suitability</em>. Time and cost are the most commonly mentioned barriers, but not the primary barriers that training vendors and small firms should focus on overcoming. Instead we argue that, the efforts should be on the attitude driven barriers: relevance, suitability, flexibility and pride. If you change the attitude among small firms towards training, the perceived benefits will become larger and therefore cost and price will become less important. If the small firms and the training vendors co-operate these barriers could easier be decreased. This could be done by ensuring that the training results in practical tools that the firms use and that they work on building a trustworthy relationship. This will help the small firms to see the <em>relevance</em> and the <em>suitability</em> of the courses offered and the training vendors to understand how to make the courses appear more <em>relevant </em>and <em>suitable</em> to the small firms.</p> / <p><strong>Bakgrund: </strong>I och med den ökade globala konkurrensen, måste företagsledare förstå vikten av att inneha och bevara en konkurrens fördel. Detta kan göras genom att fokusera på hur kunskap kan tas in i organisationen. Vikten av kompetens utveckling är en välkänd faktor för långsiktig framgång för företag. Det finns en ökad trend att lägga ut ansvaret för human resources på externa företag, vilket tidigare sköttes inom företaget. Det finns ett stort antal externa utvecklingsleverantörer på marknaden. Det kan därför ifrågasättas hur väl programmen, som de externa träningsleverantörerna erbjuder, passar med behoven hos småföretagarna.</p><p><strong>Syfte: </strong><em>Syftet med studien är att undersöka uppfattningen om tränings- och utvecklingsbehov hos småföretagare. Detta för att få en förståelse av småföretagarnas behov och komma över skillnaderna i uppfattningarna mellan externa utvecklingsleverantörer och småföretagare. </em></p><p><strong>Metod: </strong>Forskningsansatsen till den här studien är inspirerad av Grundad teori. Tio djupintervjuer har genomförts, fyra stycken med externa utvecklingsleverantörer och sex stycken med småföretagare. Det empiriska materialet har organiserats genom kodning och kategorisering enligt Grundad teori.</p><p><strong>Slutsats: </strong>Från den här studien kan det ses att både småföretagare och externa utvecklingsleverantörer ser behovet av träning och utveckling i småföretag. De områden där träningsbehov är identifierade kan summers till generell företagsekonomi och specifik kunskap inom företagets bransch. Genom denna studie har dock barriärer som motverkar träning och utveckling i småföretag identifierats. Barriärerna är: <em>kostnad, tid, relevans, stolthet, flexibilitet </em>och<em> lämplighet.</em> Tid och kostnad är de mest nämnda barriärerna, men dock inte de barriärer som primärts bör fokuseras på. Istället anser vi att kraften skall fokuseras på att minska de attityd drivna barriärerna: relevans, lämplighet, flexibilitet och stolthet hos företagarna. Om attityden hos småföretagarna ändras vad gäller träning så kommer den uppfattade fördelen av träning att öka, därmed minskar vikten av barriärerna kostnad och pris. Dessa barriärer kan lättare överbyggas om småföretagarna och de externa utvecklingsleverantörerna samarbetar. Samarbetet kan ske genom att fastställa att det praktiska verktygen, utvecklade av de externa utvecklingsleverantörerna, används av småföretagarna och att en tillförlitlig relation byggs. Detta skulle hjälpa småföretagarna att se <em>relevansen</em> och <em>lämpligheten</em> i de erbjudna kurserna och de externa utvecklingsleverantörerna skulle få en förståelse i hur man kan få kurserna att framstå som <em>relevanta</em> och <em>lämpliga</em> för småföretag.</p>
20

Estudo do acoplamento entre superf?cies seletivas de frequ?ncia assim?tricas em estruturas de multicamadas / Estudo do acoplamento entre superf?cies seletivas de frequ?ncia assim?tricas em estruturas de multicamadas

Mani?oba, Robson Hebraico Cipriano 18 June 2012 (has links)
Made available in DSpace on 2014-12-17T14:55:05Z (GMT). No. of bitstreams: 1 RobsonHCM_TESE.pdf: 3686861 bytes, checksum: 9b78889548f4f5129d82c1a9c438aec4 (MD5) Previous issue date: 2012-06-18 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work presents the development of new microwaves structures, filters and high gain antenna, through the cascading of frequency selective surfaces, which uses fractals D?rer and Minkowski patches as elements, addition of an element obtained from the combination of the other two simple the cross dipole and the square spiral. Frequency selective surfaces (FSS) 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. In this work, we present results for simulated and measured transmission characteristics of cascaded structures (multilayer), aiming to investigate the behavior of the operation in terms of bandwidth, one of the major problems presented by frequency selective surfaces. Comparisons are made with simulated results, obtained using commercial software such as Ansoft DesignerTM v3 and measured results in the laboratory. Finally, some suggestions are presented for future works on this subject / Este trabalho apresenta o desenvolvimento de novas estruturas de micro-ondas, filtros multi-banda ou banda larga, atrav?s do cascateamento de superf?cies seletivas em frequ?ncia, que usa patches fractais de D?rer pentagonal e Minkowski como elementos, al?m de um elemento obtido a partir da combina??o de outros dois mais simples que s?o o dipolo em cruz e a espira quadrada. Superf?cies seletivas em frequ?ncia (FSS) 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 micro-ondas. 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 frequ?ncia elevadas t?m sido investigadas, assim como aplica??es destas estruturas em cascata ou multicamadas, FSS ativas. Nesse trabalho, s?o apresentados resultados simulados e medidos para as caracter?sticas de transmiss?o de estruturas cascateadas (multicamadas), com intuito de investigar o comportamento do funcionamento em termos de largura de banda, um dos grandes problemas apresentados por superf?cies seletivas em frequ?ncia. S?o feitas compara??es entre resultados simulados, obtidos utilizando software comercial como Ansoft DesignerTM v3 e resultados medidos em laborat?rio. S?o apresentadas, ainda, sugest?es de continuidade do trabalho

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