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1
Stile, Concetta. "Il processo di cambiamento nelle pubbliche amministrazioni e il percorso verso l'eccellenza: il caso del comune di Pisa." Doctoral thesis, Universita degli studi di Salerno, 2014. http://hdl.handle.net/10556/1841.
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2011 - 2012<br>La ricerca si propone di analizzare, attraverso lo studio di un caso pratico riguardante una Amministrazione Comunale italiana che ha intrapreso con successo il percorso verso l'eccellenza utilizzando il Common Assessment framework, gli innumerevoli processi di riforma che hanno investito la pubblica amministrazione nel suo complesso... [a cura dell'autore]<br>XI n.s.
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Miller, Peter Scott 1960. "PERFORMANCE OF DRAINAGE CHANNELS IN PIMA COUNTY, ARIZONA." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276476.
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An analysis of drainage channel stability in urbanizing watersheds was completed in this study for areas in Pima County, Arizona. Existing channel geometry and longitudinal slope were compared to original design channel geometry and longitudinal slope. Original design channels existed in undeveloped watersheds. Information on current amounts and types of development were gathered for each channel location as well as current channel geometry and longitudinal slope. The analysis of these data showed a significant relationship between basin urbanization and reduced channel stability.
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Avery, T. S. (Timothy S. ). "CEMENT PLUG PERFORMANCE WHEN TESTED IN SITU IN A GRANITIC ROCK MASS." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275547.
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Bernardes, Maurício. "Tecnologia construtiva de piso elevado para áreas externas de edifícios." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-10032010-153812/.
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No atual cenário da construção civil brasileira, onde há vigorosa competição, as empresas construtoras que conseguirem aplicar tecnologias que aumentem a eficiência econômica ou o desempenho de seus imóveis estarão em melhores condições de perpetuar os seus negócios. A tecnologia construtiva de piso elevado para áreas externas de edifícios apresenta-se como uma das alternativas que tem elevado potencial de contribuir com incremento do desempenho e da eficiência econômica dos edifícios, já que permite a racionalização da manutenção de parte das vedações horizontais exteriores e da manutenção de eventuais instalações dispostas em seu espaço de entrepiso. Estas possibilidades permitem uma redução do custo global da edificação, ao viabilizar intervenções de menor custo. Porém, para que sejam atingidos os benefícios propostos com a utilização desta tecnologia, é necessário dispor de informações técnicas capazes de orientar satisfatoriamente a concepção e a seleção entre alternativas disponíveis no mercado, para que as exigências dos usuários sejam respeitadas. Diante desta situação, justifica-se o presente projeto de pesquisa, cujo objetivo é a sistematização e análise crítica das informações pertinentes à tecnologia construtiva de piso elevado para áreas externas de edifícios, apresentando os principais aspectos que condicionam sua especificação, projeto e execução. Por meio do estabelecimento do estado da arte, são abordados os principais conceitos associados à tecnologia, à luz das principais funções e requisitos de desempenho de uma vedação horizontal exterior. Após a avaliação destas informações, e através da análise crítica das práticas de comercialização e de produção identificadas em estudo de campo, são apresentadas diretrizes para especificação, projeto e execução do sistema de piso elevado para áreas externas.<br>In the Brazilian building market, where there is a vigorous competition, the companies that have efficient technological process of production, based on product performance, will be able to turn themselves more competitive. The technology of raised access floor used in exterior areas appears as an alternative that can both increase the performance and increase the economical efficiency of the building. This technology may turn easier and cheaper the process of planned maintenance. In order to reach those benefits, it is essential to have technical information about raised access floor used in exterior areas to support the stage of design and the stage of technological selection, making the alternative selected, suitable to the user requirements. With this background justifies a project aiming the systematization and critical analysis of the main characteristics and requirements of the technology that regulate the selection, design and production stages. This dissertation will present the state of the art on raised access floor in external areas and will use the functions and requirements related to exterior floors, in order to discuss the main parameters which influence its conception and its production system. This discussion will use field information research.
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Piñeiro, Maria Carolina de Hollanda Cavalcanti. "Estudos em reperformance: registro da prática Pina, Marina em Carolina." PROGRAMA DE PÓS-GRADUAÇÃO EM ARTES CÊNICAS, 2016. https://repositorio.ufrn.br/jspui/handle/123456789/25333.
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Previous issue date: 2016-07-15<br>Esta dissertação descreve o percurso de sete experimentos onde investiguei a possibilidade de
criação através da reperformance. Para conseguir desenvolver esta prática investigo três obras
de Pina Bausch, duas de Marina Abramovic e dois trabalhos autorais, a partir de laboratórios e
investigações desenvolvidas no “Workshop de Estudos em Reperformance” para artistas e
pesquisadores da região metropolitana do Natal, Rio Grande do Norte e em Bogotá,
Colômbia. Para desenvolver tal trajetória, foi realizado um estudo reflexivo sobre a
documentação de registros, que culminam nas impressões da visita à exposição de Marina
Abramovic no Sesc Pompéia, assim como levantamentos bibliográficos a fim de refletir sobre
o conceito de reperformance, e breve um mapeamento afetivo da história da performance em
Natal no período de 2007 à 2016.<br>This dissertation describes the trajectory of seven experiments based on studies in which I investigate
the possibility of creation through reperformance. In order to develop my practice, I analyzed three
works from Pina Bausch, two from Marina Abramovic, and two of my own works from laboratories
and researches developed in "Workshop de Estudos em Reperformance" in which I teach artists and
researchers in, both, the metropolitan region of Natal, Rio Grande do Norte, and Bogota, Colombia.
To develop such a course, not only a reflective study on records documentation was held, culminating
in the impressions of the visit of Marina Abramovic's exhibition at SESC Pompeia, but also literature
surveys was made in order to reflect on the concept of reperformance, in which I identify the need to
develop an affective mapping of the history of performance in Natal from 2007 to 2016.
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Clairet, Pierre. "Approche algorithmique pour l’amélioration des performances du système de détection d’intrusions PIGA." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2016/document.
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PIGA est un outil permettant de détecter les comportements malicieux par analyse de trace système. Pour cela, il utilise des signatures représentant les comportements violant une ou plusieurs propriétés de sécurité définies dans la politique. Les signatures sont générées à partir de graphes modélisant les opérations entre les différentes entités du système et sont stockées en mémoire pendant la détection d’intrusion. Cette base de signatures peut atteindre une taille de plusieurs Mo et ainsi réduire les performances du système lorsque la détection d’intrusion est active. Durant cette thèse, nous avons mis en place plusieurs méthodes pour réduire la mémoire nécessaire pour stocker les signatures, tout en préservant leur qualité. La première méthode présentée est basée sur la décomposition modulaire des graphes. Nous avons utilisé cet outil de la théorie des graphes pour réduire la taille du graphe et, ainsi, diminuer le nombre de signatures, ainsi que leur longueur. Appliquée à des propriétés de confidentialité sur un système servant de passerelle, cette méthode divise par 20 le nombre de signatures générées. La seconde méthode réduit directement la base de signatures en supprimant des signatures inutiles lorsque PIGA est en mode IPS. Appliquée sur les mêmes propriétés, cette méthode divise par 5 le nombre de signatures générées. En utilisant les deux méthodes, on divise le nombre de signatures par plus de 50. Ensuite, nous avons adapté le mécanisme de détection afin d’utiliser les nouvelles signatures générées. Les expérimentations que nous avons effectuées montrent que notre système est équivalent à l’ancien système. De plus, nous avons réduit le temps de réponse de PIGA<br>PIGA is a tool for detecting malicious behaviour by analysing system activity. This tool uses signatures representing illegal behaviours that violate security properties defined in the policy. The signatures are generated from graphs modelling the operation between different system entities and stored in the memory during the intrusion detection. The signature base can take up several MB (Megabytes). This will reduce system performance when the intrusion detection is running. During this thesis, we set up two methods to reduce the memory used to store the signatures while also preserving their quality. The first method is based on the modular decomposition of graphs. We used this notion of graph theory to reduce the size of the graph and lower the number and length of signatures. Applied to confidentiality properties on a gateway system, this method divides by 20 the number of generated signature. The second method reduces directly the signature base by deleting useless signatures when PIGA is used as an IPS. Applied to the same properties, this method divides by 5 the number of generated signatures. Using both methods together, the number of signatures is divided by more than 50. Next, we adapted the detection mechanism to use the new generated signatures. The experiments show that the new mechanism detects the same illegal behaviours detected by the previous one. Furthermore, we reduced the response time of PIGA
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Lima, Anderson Lazarini. "Resfriamento do piso da maternidade para porcas em lactação no verão." Universidade Federal de Viçosa, 2008. http://locus.ufv.br/handle/123456789/5619.
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Previous issue date: 2008-07-29<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This study was realized to evaluate the effect of cooling the cage floor under the lactating sows on productive performance receiving different amounts of feed in the summer. Forty two sows with different parturition orders were used (1º to 5º), distributed in three treatments (floor not cooled and free intake; floor cooled and 5,5 kg/day of intake; floor cooled and free intake), in a completely randomized experimental block design, with 14 repetitions, being each animal considered an experimental unit. The animals were distributed in treatments considering the order of parturition and body weight. The sows were in experiment during 21 days. Duringthis period received the same food and the water ad libitum. The data of the temperature of dry bulb, humidity bulb and black globe were registered in the experimental period and converted in to the index of temperature of black globe and humidity (ITGU), which was used to characterize the thermal environment in which the sows were maintained. The sows were maintained in cage with cooled floor and received food ad libitum showed larger feed intake, metabolizable energy and digestible lysine. The animals maintained in cooled floor and received restricted food showed larger mobilization of body reserves. The period to return estrus to was larger in the same animals. The piglets of sows that maintained in cooled floor showed larger weight at weaning and weight gain per day. Cooling floor too affect the physiologic parameters, with the animals submitted to the cooled floor presenting smaller values in respiratory frequency, rectal temperature and superficial temperatures. The cooling the cage floor under the lactating sows, favors the dissipation of heat, improves the thermal condition, the capacity of feed intake and productive performance of lactating sows in the summer.<br>Este estudo foi realizado para avaliar o efeito do resfriamento do piso da gaiola de maternidade no desempenho produtivo de porcas em lactação recebendo diferentes quantidades de ração no período de verão. Foram utilizadas 42 porcas de 1o a 5o partos, distribuídas em três tratamentos (piso não resfriado e consumo à vontade; piso resfriado e consumo de 5,5 kg/dia; e piso resfriado e consumo à vontade), em delineamento de blocos ao acaso com 14 repetições, no qual cada porca foi considerada uma unidade experimental. Na distribuição dos animais nos tratamentos, a fim de garantir maior uniformidade, foram considerados o peso corporal e a ordem de parto das porcas. As porcas foram mantidas no experimento do parto até o desmame, realizado aos 21 dias de lactação. Os animais foram alimentados com a mesma ração de lactação e receberam água à vontade. O ambiente térmico no interior das maternidades foi monitorado por meio de termômetros de máxima e mínima, de bulbo seco e bulbo úmido e de globo negro. Os dados de temperatura foram posteriormente convertidos no índice de temperatura de globo e umidade (ITGU) para caracterizar o ambiente térmico em que estes animais foram alojados. As porcas mantidas em gaiola com piso resfriado e que receberam ração à vontade apresentaram maiores consumos de ração, de energia metabolizável e de lisina digestível. Maior mobilização de reservas corporais foi verificada nos animais mantidos em piso resfriado com restrição do consumo de ração. O intervalo desmame-estro também foi maior nestes animais. Os leitões das porcas mantidas em piso resfriado tiveram maior peso ao desmame e maior ganho de peso diário. O resfriamento do piso também influenciou as variáveis fisiológicas determinadas, uma vez que os animais apresentaram menor freqüência respiratória e mais baixas temperatura retal e temperaturas superficiais da nuca, pernil e peito. O resfriamento do piso da gaiola de maternidade favorece a dissipação de calor corporal, melhorando a condição térmica, a capacidade de consumo e o desempenho produtivo das porcas em lactação durante o verão.
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Wong, Ching-ping. "The manifestation of Chinese philosophy and aesthetics in the performance of the pipa music." Thesis, Kingston University, 1989. http://eprints.kingston.ac.uk/20532/.
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This thesis attempts to identify the philosophical and aesthetic concepts of pipa music. The discussion is approached from a performer's point of view and is supported by the author's demonstrations on the pipa, in conjunction with the discussion of artistic theories of other Chinese traditional arts. The introductory chapter involves an examination of thehistorical perspective of the pipa, a discussion of the problems of pipa notation and an explanation of the approach of this thesis. Part I (Chapters 1-6) concentrates on the discussion of theoretical matters. An investigation of the various meanings and the evolution of the concepts qi and yun is the first step to approaching Chinese philosophy and aesthetics. The “three levels of qi” involve playing technique, aesthetic and philosophical considerations. The capturing of “qi of intentional effort” is determined by “combined technique” and breathing methods. The articulation of timbre and “slide” are the essence of “yun”. The manipulation of “qi-yun” deals with the art of performance, interpretation and re-creation, as well as major aesthetic concepts and philosophical ideas of other traditional arts. The final approach of Part I (Chapter 6) probes in to the relationship of poetry and music. Pipa music shares a similar artistic appreciation of consummate beauty to that of Chinese poetry. The focus of Part II (Chapters 7 & 8) attempts to present a detailed analytical study of pipa right-hand “combined technique” and left-hand “slide” skills, accompanied by the study of their historical context. Apart from these matters, Part II acts as a support for the aesthetic and philosophical concepts of Part I.
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Rastello, María Carolina Díaz. "Otimização de parâmetros de projeto de tubulações de sistemas de calefação por piso radiante." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-11072014-020209/.
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Devido à climatização dos ambientes internos condicionar o bem estar e o conforto térmico das pessoas é que se fazem necessárias novas pesquisas que procurem potencializar as tecnologias existentes e reduzir tanto os custos de instalação quanto o consumo de energia. É sabido que os sistemas convencionais de calefação proporcionam um alto consumo de energia e uma emissão de níveis de ruído muitas vezes inaceitáveis, entretanto os sistemas radiantes ganham, a cada dia, uma maior abrangência como alternativa de climatização devido às suas vantagens comparativas com relação aos sistemas convencionais. O emprego de sistemas de calefação por piso radiante em muitos países é limitada pelo preço da instalação como consequência do elevado custo dos materiais como é o caso da fabricação das tubulações. Estas geralmente são fabricadas de polietileno ou de cobre, sendo este ultimo o que entrega um maior desempenho térmico e, por conseguinte um melhor fornecimento de energia, mas o elevado custo deste material restringe o seu uso principalmente ao setor residencial, podendo atingir um mercado maior que compreenda edifícios públicos, de escritório, escolas, hospitais, etc. Com isso, este trabalho procura reduzir a quantidade de materiais de tubulação necessários para garantir o desempenho do sistema e o conforto térmico de uma habitação aquecida com um sistema radiante. Para isto, foi desenvolvida a resolução numérica do modelo matemático da transferência de calor no interior do piso pelo método dos volumes finitos na formulação implícita e implementada em código computacional na linguagem Matlab. Para isto, foram considerados dois parâmetros fundamentais para garantir o conforto térmico da habitação que correspondem à temperatura da água e a distancia entre os tubos que compõem o sistema. A análise corresponde ao cálculo da temperatura superficial do piso para distintas temperaturas da água e distintas distâncias, obtendo resultados interessantes que permitem reduzir o custo da instalação em até um 40%.<br>Due to temperature control of interiors conditioning the well-being and the thermal comfort of people, it is necessary to make new researches aiming to improve the existing technologies and to reduce both installation costs and energy consumption. It is known that the use of traditional heating systems involves high energy consumption and, in some cases, unacceptable noise levels; while radiant systems are gaining a wider scope as a heating alternative due to its advantages compared to conventional systems. The use of radiant floor heating systems in Brazil is limited by installation cost due to the high price of required materials. This fact restricts the use of these systems primarily to the residential sector. However, it may be possible for this technology to reach a larger market, including public buildings, offices, schools and hospitals. Therefore, to optimize the most relevant design parameters relating to the thermal performance of the system and reduce both the amount of required materials and the system operating time, this paper elaborates on a method consisting of a high-resolution numerical mathematical model of the heat transfer within a floor using a finite control volume method with an implicit solution scheme. In this work, we consider how the properties of the materials, environmental thermal comfort factors and the performance of the system work together with the theoretical underpinnings of the heat transfer phenomenon to define the design parameters to optimize the materials and provide greater control over the energy consumption. This optimization is achieved without changing any environmental thermal comfort conditions or the well-being of the occupants. Finally, a numerical solution for the heat transfer within the floor is implemented using the computer code Matlab.
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Melchior, Raquel. "PRODUTIVIDADE E BEM-ESTAR DE PORCAS GESTANTES ALOJADAS EM BAIAS COLETIVAS COM PISO DE CONCRETO OU CAMA SOBREPOSTA." Universidade Federal de Santa Maria, 2012. http://repositorio.ufsm.br/handle/1/10784.
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The aim of this dissertation was to study through meta-analysis the cortisol levels and productivity of sows via a field study the effects of housing on behavior and productivity of sows. The database was composed of 22 articles published between 1996 to 2010, totaling 170 treatments and 1,941 sows. The meta-analysis was performed by sequential analysis: graphical, correlation and variance-covariance. To evaluate the systems of gestation were used 42 sows in a randomized block design with two treatments (T1 - 28 days in gestation crates and 82 days in concrete floor collective pens and T2 - 28 days in gestation crates and 82 days in deep bedding collective pens) three replicates each. Salivary cortisol was positively correlated (P<0.05) with feed intake, of crude protein and lysine and lysine level. Plasmatic cortisol was negatively correlated (P<0.01) with metabolizable energy level and positively correlated (P<0.01) with level and crude protein intake. Individual housing in deep bedding reduced (P<0.01) 47% the salivary cortisol in relation to concrete floor housing. In housing collective on deep bedding this level was 10% higher (P<0.01) in relation housing collective to concrete floor. The piglet birth weight decreased by 0.0002 kg for each increase of one unit nMol.L-1 in plasmatic cortisol (Y=1.6032-0.0002X) or salivary (Y=1.6026-0.0002X). The incidence of stereotyped behaviors was 71% lower (P<0.05) in sows housed in pens of deep bedding, at 90th days gestation. The activities increased on average by 60% (P<0.05) for sows housed in pens of deep bedding during collective pens housing (transfer, after transfer, 90th days of gestation and the average total period). Sows housed in pens concrete floor showed an increase of 66% (P<0.05) in interactions social, the average of the total period. Sows housed in pens of deep bedding had 60% more (P<0.05) skin lesions on the 1st and 2nd days after being transferred to collective pens. The housing system did not affect (P>0.05) backfat thickness and feed conversion the sows during lactation, body weight and weight gain of piglets and the duration total of the farrowing. Sows housed in pens concrete floor during pregnancy reached the end of lactation with 7% more (P<0.05) pigs than sows housed in pens of deep bedding. The pens housing deep bedding for sows in gestation provides better welfare, increases physical activity and does not affect the productive performance of animals.<br>O objetivo desta dissertação foi estudar através de meta-análise os níveis de cortisol e a produtividade de porcas gestantes e através de um estudo a campo os efeitos do sistema de alojamento sobre o comportamento e a produtividade de porcas gestantes. A meta-análise foi composta por 22 artigos publicados entre 1996 a 2010, totalizando 170 tratamentos e 1.941 porcas. A meta-análise foi realizada por análise sequencial: correlação, gráfica e de variância-covariância. Para avaliar os sistemas de gestação foram utilizadas 42 porcas em um delineamento de blocos ao acaso com dois tratamentos (T1 - 28 dias em celas de gestação e 82 dias em baias coletivas de piso concreto e T2 - 28 dias em celas de gestação e 82 dias em baias coletivas de cama sobreposta) três repetições cada. Para cortisol salivar houve correlação positiva (P<0,05) com consumo de ração, de proteína bruta e de lisina. Para cortisol plasmático a correlação foi negativa (P<0,01) com nível de energia metabolizável e positiva (P<0,01) com nível e consumo de proteína bruta. O alojamento individual em cama sobreposta reduziu (P<0,01) 47% o cortisol salivar em relação ao alojamento individual em piso concreto. No alojamento coletivo em cama sobreposta esse nível foi 10% maior (P<0,01) que o alojamento coletivo em piso concreto. O peso ao nascer dos leitões reduziu em 0,0002 kg a cada aumento de um nMol.L-1 no cortisol plasmático (Y=1,6032-0,0002X) ou salivar (Y=1,6026-0,0002X). A incidência de comportamentos estereotipados foi 71% menor (P<0,05) em porcas alojadas em baias de cama sobreposta, aos 90 dias de gestação. As atividades aumentaram em média 60% (P<0,05) para porcas alojadas em baias de cama sobreposta, durante o alojamento em baias coletivas (transferência, pós-transferência, 90 dias de gestação e na média do período total). Porcas alojadas em baias de piso concreto apresentaram aumento de 66% (P<0,05) nas interações sociais, na média do período total. As porcas alojadas em baias de cama sobreposta apresentaram 60% mais (P<0,05) lesões de pele no 1º e 2º dias após a transferência para baias coletivas. O sistema de alojamento não afetou (P>0,05) a espessura de toucinho e a conversão alimentar das porcas na lactação, o peso vivo e ganho de peso dos leitões e a duração total do parto. Porcas alojadas em baias de piso concreto durante a gestação chegaram ao final da lactação com 7% mais (P<0,05) leitões do que as porcas alojadas em baias de cama sobreposta. O alojamento em baias de cama sobreposta para porcas em gestação proporciona melhor bem-estar, aumenta a atividade física e não altera o desempenho produtivo dos animais.
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Silva, Maurício Batista da. "Caracterização de misturas asfálticas de alto desempenho tipo SMA e avaliação do processo executivo em pista experimental no Estado do Rio Grande do Sul." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/96472.
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Esta pesquisa foi baseada em um projeto de Stone Mastic Asphalt – SMA na faixa I da especificação ET-DE-P00-031 do Departamento de Estradas de Rodagem do Estado de São Paulo, com ligante modificado por polímero, classificação 60/85, em trecho experimental da rodovia ERS-122, km 6+400 ao km 7+000. O volume elevado de veículos pesados neste trecho e as deformações decorrentes desta carga motivaram o estudo de novas tecnologias. Foram realizados ensaios laboratoriais para confirmar a dosagem da mistura e determinar as propriedades mecânicas através de ensaios de módulo de resiliência, resistência a tração na compressão diametral e deformação permanente em trilha de roda. A mistura apresentou bom desempenho a deformação permanente, módulo de resiliência e resistência a tração no teor de projeto. Além disso, foi analisado o processo executivo da mistura, desde a produção do agregado, passando pelo processo de usinagem, transporte, lançamento e compactação. Inicialmente, foi executada pista teste na praça de pedágio do Departamento Autônomo de Estradas de Rodagem do Estado do Rio Grande do Sul (DAER/RS) localizada no município de Portão/RS para posterior execução no trecho experimental. Constatou-se que o processo de usinagem produziu misturas com variações positivas de até +0,3% em relação ao teor de ligante, influenciando no desempenho da mistura no que se refere aos ensaios de desempenho. Os resultados e análises apontam para uma mistura que requer uma metodologia de controle de qualidade efetiva, mas que mesmo com algumas variações, o revestimento ainda apresentou bom desempenho.<br>This research was based on a Stone Mastic Asphalt- SMA project in the grading smolop #1 of ET-DE-P00/031 specification of São Paulo Highways Department , with modified binder, grade 60/85, in a test section in ERS-122 highway, between km 6+400 and km 7 +0. The high volume of heavy vehicles on this highway and the resulting deformations, led to the study of new technologies. Laboratory tests were conducted to confirm the mixture design and determine the mechanical properties through resilient modulus test, tensile strength in diametrical compression and wheel-tracking test. The mixture had a good performance at the Wheel-tracking test, resilient modulus and tensile strength at the design binder content. In addition, it was analyzed the production process of the mixture, since the production at the crushing plant, mix plant facilities, delivery and compaction process. Initially, the test was performed at the toll plaza of DAER/RS in the city of Portão/RS for later execution in test section. It was found that the mixing plant produced mixtures up to 0.3% over the design binder content, influencing in the performance of the mixture on performance tests. The results and analyzes indicate that the mixture requires a effective methodology of quality control, but even with some variations, the layer still performed well.
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Panayi, Petros K. "Design and comparative performance evaluation of novel mobile handset antennas and their radiative effects on users." Thesis, University of South Wales, 2000. https://pure.southwales.ac.uk/en/studentthesis/design-and-comparative-performance-evaluation-of-novel-mobile-handset-antennas-and-their-radiative-effects-on-users(f084a72c-b06d-47a6-8546-8ada0844c981).html.
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The beginning of the 21 st century is characterised, among others, by the evolution in telecommunications. The rapid growth of mobile communications and the variety of applications proposed for the third generation (3G) systems require long operation time, low weight and cost for terminals, as well as improved link quality. For this reason a good efficiency and low profile antennas with low absorption losses by the user are desirable. The Planar Inverted-F Antenna (PIFA) is shown to result into low SAR values and high efficiency when operating in the proximity of the user. Despite these advantages, PIFA is also characterised by narrow bandwidth that limits its practical use. The first part of this work is dedicated to the measurements and evaluation of the radiation characteristics of the PIFA and other wire antennas both in the near and far fields. In addition, novel methods of PIFA tuning are presented. These include the repositioning of the shorting pin and modification of its capacitance. By using these techniques, the effective bandwidth of the PIFA can be increased to satisfy the GSM900 and DCS 1800 system bandwidth requirements. Dual-band and electronically tuned PIFA prototypes are also included. The effects of the handset size on the mass averaged Specific Absorption Rate (SAR), and antenna efficiency are investigated. The appropriate choice of handset can result in up to 30%-reduced peak SAR. The computed SAR values from PIFA are compared with those resulting from the use of a handset equipped with quarter wavelength monopole antenna. A new measure referred to as the 3dB SAR volume is proposed. This measure provides better understanding of the absorbed power distribution in the operator's head. Results obtained in the course of study show that low profile handset antennas, such as the PIFA, present in addition to dual resonance and low reflection losses, reduced SAR values, high efficiency and low 3dB SAR volume. Finally, SAR and 3dB SAR volume values from simulations on 5- and 10- years old child head models are compared with their equivalents for adult models from which appropriate conclusions are drawn.
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Wang, Tracy (Chun-Chia). "Expanding the Violin's Possibilities in Chinese Music: A Case Study of Transcription and Performance Issues Related to Pipa Music Played on the Violin." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1248509/.
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In recent years, a large part of the erhu's repertoire has been arranged for performance on the violin and vice versa. Given the difficulties involved in transcribing the music of plucked or woodwind instruments for the violin, the erhu has been the most popular choice for transcribing Chinese music for the violin. However, the erhu and violin are radically dissimilar instruments based on different principles. Pipa music is an essential part of traditional Chinese music from as early as 202 BCE, and the instrument's repertoire represents a large portion of East Asian music aesthetics, and this context should be considered to successfully transcribe pipa music for violin. This dissertation talks briefly about Chinese music history and its categories and also focuses on the history and development of the pipa as well as its repertoire categories to provide context for the following musical examples. I use existing transcription examples from different categories of pipa music as an avenue to discuss how to transcribe pipa music for the violin. Even though the violin has some limitations for use as a plucked instrument, the instrument can still make use of several different kinds of techniques in order to play the music in a way that can represent certain features of the pipa while retaining the violin's characteristics.
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Angeli, Ana Laura [UNESP]. "Efeito da aquacupuntura sobre a performance de cavalos puro-sangue inglês, treinados em pista e avaliados por meio do teste de velocidade escalonada a campo." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/101185.
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angeli_al_dr_botfmvz.pdf: 862748 bytes, checksum: f1d2f5c79f3766ee78b1a8522d2b67e8 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>O objetivo deste estudo foi mensurar o efeito positivo da acupuntura nos parâmetros de performance atlética e verificar o uso do teste de velocidade escalonada a campo em cavalos da raça puro-sangue-inglês. Foram utilizados 24 indivíduos, machos e fêmeas, atletas em campanha e hígidos. Os animais foram divididos em três grupos, sendo o GI o controle, o GII, os animais tratados com acupuntura falsa e o GIII, os animais tratados com acupuntura verdadeira. A performance foi avaliada a campo em dois testes de esforço crescente, submáximos, num intervalo de três semanas entre eles e compostos pelas seguintes avaliações: lactato basal, VLa4, lactato de recuperação, V200, cortisol, enzimas musculares, temperatura retal, eritrograma e leucograma. As vitórias obtidas por cada animal num período máximo de dois meses antes e depois dos tratamentos foram computadas para análise posterior...<br>The objectives of this study were to evaluate the effect of acupuncture on performance variables and the efficacy of the field velocity test on thoroughbred racehorses. Twenty four individuals, males and females, on actual race activity, all sound were used. All animals were divided into three groups: GI was the control one, GII the sham acupuncture group and GIII the real acupuncture treated animals. The performance was evaluated on field conditions, by two submaximal incremental tests, separated by a three week period each. The tests included the following measurements: rest lactate values, VLa4, active recovery lactate values, V200, cortisol, muscle enzymes, rectal temperature and red and white blood cell analysis. During two months before and after treatments, the victories of each animal were observed to late examination... (Complete abstract click electronic access below)
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Borges, Gabriel Adão. "Comparação do desempenho energético entre sistema de condicionamento de ar com distribuição pelo piso e pelo teto, utilizando o modelo computacional EnergyPlus." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3153/tde-13072018-111127/.
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Em pauta já há algum tempo, os impactos ambientais, possivelmente gerados pela ação humana, são cada vez mais discutidos e estudados. A busca por um desenvolvimento sustentável e formas mais eficientes do consumo de energia é abordada frequentemente. No Brasil, os edifícios comerciais e públicos apresentam alta demanda de energia elétrica e os sistemas de condicionamento de ar são responsáveis por uma parcela relevante do consumo no país. Para mitigar esse consumo, o sistema de ar condicionado distribuído pelo piso tem sido proposto como uma solução, pois este é intrinsecamente mais eficiente que o sistema de ar condicionado convencional, com distribuição de ar pelo teto. O presente trabalho tem como propósito identificar o potencial de economia de energia de um sistema de condicionamento de ar com distribuição pelo piso em relação a um sistema com distribuição pelo teto, por meio da simulação computacional. Avaliaram-se também o impacto do aumento da temperatura de insuflação e do pé-direito da edificação, além do uso de ciclo economizador (controle entálpico) aplicado aos sistemas na economia de energia. Para a modelagem computacional, realizada pela ferramenta computacional EnergyPlus, tomou-se como referência uma sala de aula que contém um sistema de condicionamento de ar com distribuição pelo piso. O primeiro sistema modelado foi pelo piso, e este serviu como base para a modelagem do sistema pelo teto. Após a criação dos modelos foram executadas as simulações cujos resultados permitiram a comparação entre os consumos de energia de cada um dos sistemas. Em conformidade com a literatura, onde se afirmam que os sistemas com distribuição de ar pelo piso são mais eficientes que os convencionais (distribuição de ar pelo teto), este trabalho também concluiu que este sistema é mais eficiente, apresentando um indicador de economia de energia da ordem de 33%, para a condição: pé-direito de 3,50 m; temperatura de insuflação de 19 °C; e controle entálpico. Os resultados desta pesquisa indicam ainda que a utilização do controle entálpico tem maior influência na economia de energia se comparada ao aumento da temperatura de insuflação ou do pé-direito.<br>On the agenda for some time, the environmental impacts, possibly generated by human action, are increasingly discussed and studied. The demand for sustainable development and more efficient ways of energy consumption is often addressed. In Brazil, commercial and public buildings have high demand for electricity and air conditioning systems are responsible for a significant portion of this consumption in the country. The underfloor air conditioning system has been proposed as a solution to mitigate such consumption because it is intrinsically more efficient than the ceiling-based air conditioning system. The present work aims to identify the energy saving potential of an air conditioning system with underfloor air distribution comparatively to a system with ceiling air distribution, through computational simulation. Also, the impact of increased supply air temperature and the floor to ceiling height, and the use of the economizer cycle (enthalpy control) was evaluated. For the computational modeling, carried out by the EnergyPlus computational tool, a classroom that contains an air conditioning system with floor distribution was used as reference. The first modeled air distribution system was the underfloor air distribution system, and this served as a basis for the modeling of the ceiling air distribution system. After performing the models, the simulations were carried out, whose results allowed the comparison the energy consumptions between the two systems. According to the literature, where it is stated that the systems with underfloor air distribution are more efficient than the conventional ones (ceiling air distribution), this work also concludes that the system with underfloor air distribution is more efficient, presenting an energy saving indicator around 33%, for the following condition: floor to ceiling height of 3.50 m; supply air temperature of 19 ° C; and enthalpy control. The results of this research also indicate that the use of the enthalpy control has a greater influence on the energy savings compared to the increase of the supply air temperature or the floor to ceiling height.
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Angeli, Ana Laura. "Efeito da aquacupuntura sobre a performance de cavalos puro-sangue inglês, treinados em pista e avaliados por meio do teste de velocidade escalonada a campo /." Botucatu : [s.n.], 2005. http://hdl.handle.net/11449/101185.
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Orientador: Stelio Pacca Loureiro Luna<br>Resumo: O objetivo deste estudo foi mensurar o efeito positivo da acupuntura nos parâmetros de performance atlética e verificar o uso do teste de velocidade escalonada a campo em cavalos da raça puro-sangue-inglês. Foram utilizados 24 indivíduos, machos e fêmeas, atletas em campanha e hígidos. Os animais foram divididos em três grupos, sendo o GI o controle, o GII, os animais tratados com acupuntura falsa e o GIII, os animais tratados com acupuntura verdadeira. A performance foi avaliada a campo em dois testes de esforço crescente, submáximos, num intervalo de três semanas entre eles e compostos pelas seguintes avaliações: lactato basal, VLa4, lactato de recuperação, V200, cortisol, enzimas musculares, temperatura retal, eritrograma e leucograma. As vitórias obtidas por cada animal num período máximo de dois meses antes e depois dos tratamentos foram computadas para análise posterior... (Resumo completo, clicar acesso eletrônico abaixo)<br>Abstract: The objectives of this study were to evaluate the effect of acupuncture on performance variables and the efficacy of the field velocity test on thoroughbred racehorses. Twenty four individuals, males and females, on actual race activity, all sound were used. All animals were divided into three groups: GI was the control one, GII the sham acupuncture group and GIII the real acupuncture treated animals. The performance was evaluated on field conditions, by two submaximal incremental tests, separated by a three week period each. The tests included the following measurements: rest lactate values, VLa4, active recovery lactate values, V200, cortisol, muscle enzymes, rectal temperature and red and white blood cell analysis. During two months before and after treatments, the victories of each animal were observed to late examination... (Complete abstract click electronic access below)<br>Doutor
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Skryja, Jan. "Predikce řezných sil a výkonů při řezání kotoučovou pilou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-402548.
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This thesis deals with the cutting of steel thin-walled parts by slitting saw. Its subject is to study and test of cutting edges of slitting saws with a goal to reduce cutting forces to a minimum. The thesis is divided into the theoretical and practical part. In the theoretical part, existing knowledge about slitting saws and general cutting technology is analyzed. In the practical part testing of four slitting saws with different geometries of cutting edges during machining of chosen thin-walled part is performed. The performed measurements show that by the proper choice of the geometry of cutting edge, the cutting force can be reduced approximately by 30 %.
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Silva, Filho Geraldo. "Higher salaries, more teaching, better performance? The effects of the introduction of the minimum salary for teachers in Brazil." reponame:Repositório Institucional do FGV, 2016. http://hdl.handle.net/10438/15477.
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Previous issue date: 2016-01-29<br>The empirical literature has produced strong evidence that, after controlling for pupils’ socioeconomic characteristics, teacher quality is the most important school factor in explaining pupil’s performance in standardized tests. However, there is no consensus on how public school systems could improve teacher quality. Do higher salaries impact teacher quality? Brazilian federal government introduced in 2009 a national minimum base salary for public school teachers that triggered a noticeable exogenous increase in municipal teachers’ salaries. The main objective of this dissertation is to assess the short-run impacts of a linear unconditional teacher salary hike on education quality. Due to the lack of secondary data for base teacher salary from 2008 to 2013, we had to carry out a survey with municipal department of education to gather information about teacher career structure and base salaries for that period. Based on our survey information, the first chapter investigates the compliance of municipal school systems with the national minimum salary for teacher law. We find that unobserved factors are determinant in explaining salary variability among municipalities and the compliance with the law, which supports our identification strategy based on difference-in-differences methods combined with propensity score matching. The second chapter focuses on the estimation of the impact of teachers’ salaries hike on students’ proficiency. According to these results, unconditional salary increase does not trigger better pupils’ performance, at least in the short-run. Although impacts on pupils’ learning have not been detected, some transmission mechanisms from salary increase to better education outcomes may have been activated. Thus, the main objective of the third chapter is to assess the impact of salary hikes on teachers’ quality. We assess the impact of salary hikes on a proxy for teachers’ quality, namely, their scores on ENADE, and on teaching career attractiveness, that could induce improvements in teacher quality in the long-run. Career attractiveness is measured by the quality of entrants into teaching profession related college courses, according to their Enem scores. In this last chapter, we apply a Triple-Differences model aiming at controlling for two kinds of potentially confounding trends: (i) changes in the performance of teachers (potential future teachers) across municipalities unrelated to the policy; and (ii) changes in performance of all teachers (students) living in municipalities affected by the new policy. Triple-differences estimates reveal mild effects of teachers’ salary hikes on municipal teachers’ quality and on the attractiveness of College courses related to teaching career.<br>De acordo com a literatura empírica, há fortes evidências de que, após o controle de características socioeconômicas dos alunos, a qualidade dos professores é o fator mais importante para explicar o desempenho do aluno em testes padronizados. No entanto, não há consenso sobre como sistemas públicos de ensino podem melhorar a qualidade dos professores. Será que o pagamento de salários mais elevados a professores da rede pública impactam a qualidade dos professores nas escolas públicas? O Governo Federal brasileiro introduziu, em 2009, piso salarial nacional para os professores de escolas públicas, provocando um perceptível aumento exógeno dos salários dos professores municipais. O principal objetivo desta tese é avaliar os impactos de curto prazo da elevação linear e incondicional do salário do professor na qualidade da educação. Devido à ausência de dados secundários sobre o valor do salário-base de professores entre 2008 e 2013, tivemos que realizar um levantamento com as Secretarias Municipais de Educação para reunir informação sobre a estrutura da carreira docente e sobre os salários-bases nesse período. Com base em nossa pesquisa de campo, o primeiro capítulo investiga a conformidade dos sistemas municipais de ensino ao piso salarial nacional para professores de redes públicas. Encontramos que fatores não observáveis/observados são determinantes para explicar a variabilidade salarial verificada entre os municípios e o cumprimento da lei, o que embasa nossa estratégia de identificação com base em métodos de diferença em diferenças, combinados com pareamento com base em escore de propensão. O segundo capítulo centra-se na estimativa do impacto da elevação dos salários dos professores sobre a proficiência dos alunos de 5º ano do ensino fundamental municipal. De acordo com estes resultados, o aumento salarial incondicional não gerou uma expansão da proficiência escolar dos alunos, pelo menos no curto prazo. Embora não tenham sido detectados impactos na aprendizagem dos alunos, alguns mecanismos de transmissão do aumento salarial para melhores resultados educacionais podem já ter sido ativados. Assim, o principal objetivo do terceiro capítulo é avaliar o impacto dos aumentos de salário sobre a qualidade dos professores atuais e dos potenciais futuros professores. Avaliamos o impacto de aumentos de salário sobre o desempenho dos professores no ENADE, uma proxy de sua qualidade, e sobre a atratividade dos cursos de ensino superior associados à carreira docente. Essa atratividade é medida por meio da qualidade dos que entram nos respectivos cursos superiores, de acordo com seu desempenho no Enem. Neste último capítulo, aplicamos modelo de Tripla-Diferenças visando controlar dois tipos de potenciais fatores de confusão: (i) mudanças no desempenho dos professores (potenciais futuros professores) entre grupos de municípios, que foram submetidos ao tratamento e os que não foram tratados, que nada têm a ver com a política; e (ii) as alterações no desempenho de todos os professores (alunos) que vivem no município em que houve a elevação salarial devido à introdução da lei. As estimativas obtidas indicam que a elevação salarial gerou efeitos leves sobre a qualidade dos professores e sobre a atratividade dos cursos relacionados à carreira docente.
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Souza, FÃbio Henrique de. "Desempenho energÃtico de um trator agrÃcola 4x2 â TDA, em funÃÃo da pressÃo de inflaÃÃo dos pneus em pista de concreto e em solo mobilizado, conforme a norma OECD â cÃdigo 2." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=9840.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>A adequaÃÃo de um trator agrÃcola, visando utilizaÃÃo de pressÃes de inflaÃÃo dos pneus adequadas, para diferentes condiÃÃes superficiais de solo, resulta em melhor desempenho geral, com consequente aumento da capacidade operacional e melhor qualidade de operaÃÃo. Assim este trabalho teve como objetivo avaliar o desempenho energÃtico de um trator agrÃcola 4x2 - TDA trabalhando com diferentes forÃas na barra de traÃÃo, pressÃo de inflaÃÃo dos pneus em superfÃcie de concreto e em solo mobilizado, utilizando como norma de ensaio a OECD â âCÃdigo 2â (2012). Os ensaios foram realizados, no NÃcleo de Ensaios de MÃquinas e Pneus Agroflorestais â NEMPA, com delineamento experimental em faixas e esquema fatorial 2x3x2 com cinco repetiÃÃes, sendo duas pressÃes de inflaÃÃo dos pneus do trator 165,4 kPa (24 psi) nos rodados traseiro e 220,6 kPa (32 psi) nos rodados dianteiro do trator, correspondente a mÃxima pressÃo de inflaÃÃo recomendada pelo fabricante dos pneus e 110,3 kPa (16 psi) nos rodados traseiro e 110,3 kPa (16 psi) nos rodados dianteiro do trator, correspondente a mÃnima pressÃo de inflaÃÃo recomendada pelo fabricante dos pneus, trÃs forÃas aplicadas na barra de traÃÃo 100%, 75% e 50% da forÃa mÃxima de traÃÃo na potÃncia mÃxima e velocidade nominal do motor e dois tipos de superfÃcies de rolamento. Esses fatores foram arranjados para permitir a avaliaÃÃo dos efeitos das variÃveis de desempenho individualmente ou em grupos, sendo todos os dados que apresentaram normalidade foram submetidos à anÃlise de variÃncia, aplicando o teste DMS a 5% de significÃncia, para a comparaÃÃo das mÃdias, os dados que nÃo apresentaram distribuiÃÃo normal foram arranjados para analise estatÃstica atravÃs da MÃdia MÃvel Exponencialmente Ponderada - MMEP. O trator avaliado no ensaio foi o New Holland TM 7040 com potÃncia mÃxima no motor indicada pelo fabricante de 132 kW a 2200 rpm, tracionando a Unidade MÃvel de Ensaio na Barra de TraÃÃo - UMEB. Nos ensaios de campo observou-se que a mÃnima pressÃo de inflaÃÃo dos pneus recomendada pelo fabricante dos pneus melhorou o desempenho energÃtico do trator, reduzindo o consumo especifico de combustÃvel e aumentando o rendimento na barra de traÃÃo do trator. Em superfÃcie de concreto o trator obteve forÃa mÃxima de traÃÃo 32,6% superior à forÃa mÃxima de traÃÃo obtida em superfÃcie de solo mobilizado. Os critÃrios de ensaio empregados da norma OECD - âCÃdigo 2â proporcionaram uma padronizaÃÃo no ensaio facilitando a comparaÃÃo entre os fatores avaliados.<br>Agricult tractor adequation aiming the use of appropriated tire inflation pressures for different surface conditions results in better overall performance with consequent increase in operational capacity and better quality of service. Thus this study aimed to assess the energy performance of a farm tractor 4x2 - TDA working with different forces in the drawbar, inflation pressure of tires on concrete surface and tilled soil, using as a testing standard OECD â âCode 2" (2012). The tests were conducted at the Center for Testing Machines and Tires Agroforestry - NEMPA, a randomized 2x3x2 factorial and tracks with five repetitions, two tire inflation pressures Tractor 165.4 kPa (24 psi) in rear axles and 220.6 kPa (32 psi) front axles on the tractor, corresponding to maximum inflation pressure recommended by the tire manufacturer and 110.3 kPa (16 psi) in rear axles and 110.3 kPa (16 psi) in front wheelsets Tractor, corresponding to minimal inflation pressure recommended by the tire manufacturer, three forces applied to the drawbar 100%, 75% and 50% of the maximum force of traction at maximum power and rated speed of the engine and two types of bearing surfaces . These factors were arranged to allow evaluation of the effects of performance variables individually or in groups, with all data presented normality were subjected to analysis of variance, using the DMS test at 5% significance for the comparison of means, the data not normally distributed were arranged for statistical analysis by Exponentially Weighted Moving Average - MMEP. The tractor test was evaluated in the 7040 New Holland TM engine with maximum power specified by the manufacturer of 132 kW at 2200 rpm, pulling the Mobile Unit Testing in Drawbar - UMEB generated. In field trials showed that the minimum tire inflation pressure recommended by the tire manufacturer has improved the energy performance of the tractor, reducing specific consumption of fuel and increasing the yield on the tractor drawbar. In concrete surface the tractor got maximum tensile strength 32.6% higher than the maximum tensile strength obtained in surface soil mobilized. The test criteria employed the standard OECD - "Code 2" provided a standardized test in facilitating the comparison between the factors evaluated.
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Souza, Fábio Henrique de. "Desempenho energético de um trator agrícola 4x2 – TDA, em função da pressão de inflação dos pneus em pista de concreto e em solo mobilizado, conforme a norma OECD – código 2." reponame:Repositório Institucional da UFC, 2013. http://www.repositorio.ufc.br/handle/riufc/18594.
Full textAbstract:
SOUZA, Fábio Henrique de. Desempenho energético de um trator agrícola 4x2 – TDA, em função da pressão de inflação dos pneus em pista de concreto e em solo mobilizado, conforme a norma OECD – código 2. 2013. 111 f. Dissertação (Mestrado em engenharia agrícola)- Universidade Federal do Ceará, Fortaleza-CE, 2013.<br>Submitted by Elineudson Ribeiro (elineudsonr@gmail.com) on 2016-06-21T18:16:56Z
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Previous issue date: 2013<br>Agricult tractor adequation aiming the use of appropriated tire inflation pressures for different surface conditions results in better overall performance with consequent increase in operational capacity and better quality of service. Thus this study aimed to assess the energy performance of a farm tractor 4x2 - TDA working with different forces in the drawbar, inflation pressure of tires on concrete surface and tilled soil, using as a testing standard OECD – “Code 2" (2012). The tests were conducted at the Center for Testing Machines and Tires Agroforestry - NEMPA, a randomized 2x3x2 factorial and tracks with five repetitions, two tire inflation pressures Tractor 165.4 kPa (24 psi) in rear axles and 220.6 kPa (32 psi) front axles on the tractor, corresponding to maximum inflation pressure recommended by the tire manufacturer and 110.3 kPa (16 psi) in rear axles and 110.3 kPa (16 psi) in front wheelsets Tractor, corresponding to minimal inflation pressure recommended by the tire manufacturer, three forces applied to the drawbar 100%, 75% and 50% of the maximum force of traction at maximum power and rated speed of the engine and two types of bearing surfaces . These factors were arranged to allow evaluation of the effects of performance variables individually or in groups, with all data presented normality were subjected to analysis of variance, using the DMS test at 5% significance for the comparison of means, the data not normally distributed were arranged for statistical analysis by Exponentially Weighted Moving Average - MMEP. The tractor test was evaluated in the 7040 New Holland TM engine with maximum power specified by the manufacturer of 132 kW at 2200 rpm, pulling the Mobile Unit Testing in Drawbar - UMEB generated. In field trials showed that the minimum tire inflation pressure recommended by the tire manufacturer has improved the energy performance of the tractor, reducing specific consumption of fuel and increasing the yield on the tractor drawbar. In concrete surface the tractor got maximum tensile strength 32.6% higher than the maximum tensile strength obtained in surface soil mobilized. The test criteria employed the standard OECD - "Code 2" provided a standardized test in facilitating the comparison between the factors evaluated.<br>A adequação de um trator agrícola, visando utilização de pressões de inflação dos pneus adequadas, para diferentes condições superficiais de solo, resulta em melhor desempenho geral, com consequente aumento da capacidade operacional e melhor qualidade de operação. Assim este trabalho teve como objetivo avaliar o desempenho energético de um trator agrícola 4x2 - TDA trabalhando com diferentes forças na barra de tração, pressão de inflação dos pneus em superfície de concreto e em solo mobilizado, utilizando como norma de ensaio a OECD – “Código 2” (2012). Os ensaios foram realizados, no Núcleo de Ensaios de Máquinas e Pneus Agroflorestais – NEMPA, com delineamento experimental em faixas e esquema fatorial 2x3x2 com cinco repetições, sendo duas pressões de inflação dos pneus do trator 165,4 kPa (24 psi) nos rodados traseiro e 220,6 kPa (32 psi) nos rodados dianteiro do trator, correspondente a máxima pressão de inflação recomendada pelo fabricante dos pneus e 110,3 kPa (16 psi) nos rodados traseiro e 110,3 kPa (16 psi) nos rodados dianteiro do trator, correspondente a mínima pressão de inflação recomendada pelo fabricante dos pneus, três forças aplicadas na barra de tração 100%, 75% e 50% da força máxima de tração na potência máxima e velocidade nominal do motor e dois tipos de superfícies de rolamento. Esses fatores foram arranjados para permitir a avaliação dos efeitos das variáveis de desempenho individualmente ou em grupos, sendo todos os dados que apresentaram normalidade foram submetidos à análise de variância, aplicando o teste DMS a 5% de significância, para a comparação das médias, os dados que não apresentaram distribuição normal foram arranjados para analise estatística através da Média Móvel Exponencialmente Ponderada - MMEP. O trator avaliado no ensaio foi o New Holland TM 7040 com potência máxima no motor indicada pelo fabricante de 132 kW a 2200 rpm, tracionando a Unidade Móvel de Ensaio na Barra de Tração - UMEB. Nos ensaios de campo observou-se que a mínima pressão de inflação dos pneus recomendada pelo fabricante dos pneus melhorou o desempenho energético do trator, reduzindo o consumo especifico de combustível e aumentando o rendimento na barra de tração do trator. Em superfície de concreto o trator obteve força máxima de tração 32,6% superior à força máxima de tração obtida em superfície de solo mobilizado. Os critérios de ensaio empregados da norma OECD - “Código 2” proporcionaram uma padronização no ensaio facilitando a comparação entre os fatores avaliados.
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Elfergani, Issa T. "Investigation, design and implementation of frequency tuneable antennas for mobile handset and UWB applications : simulation and measurement of tunable antennas for handheld mobile handsets and UWB system, investigations of frequency tuneable range, antenna radiation performance and antenna design optimisation using parametric studies." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/13761.
Full text
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Hraga, Hmeda I. "Modelling and design of compact wideband and ultra-wideband antennas for wireless communications. Simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/5668.
Full textAbstract:
The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing UWB antenna as compared to narrowband antenna. The primary requirement of UWB antennas is be able to operate over frequencies released by the FCC. Moreover, the satisfaction of radiation properties and good time domain performance over the entire frequency range are also necessary.
In this thesis, designing and analysing printed crescent shape monopole antenna, Planar Inverted F-L Antenna (PIFLA) and Planar Inverted FF Antenna (PIFFA) are focused. A Planar Inverted FF Antenna (PIFFA) can be created to reduce the potential for interference between a UWB system and other communications protocols by using spiral slot.
The antennas exhibits broadside directional pattern. The performances such as return loss, radiation pattern and current distribution of the UWB antennas are extensively investigated and carried out. All the results have been demonstrated using simulation and experimentally whereby all results satisfy the performance under - 10dB point in the bandwidth of UWB.
In addition the miniaturization of MIMO/diversity Planar Inverted-F antenna (PIFA) which is suitable for pattern diversity in UWB applications is presented. This antenna assembly is formed by two identical PIFAs, a T-shaped decoupling structure which connects the two PIFAs and a finite ground plane with a total compact envelope dimension of 50 ¿ 90 ¿ 7.5mm3. The radiation performance of the proposed MIMO antenna was quite encouraging and provided an acceptable agreement between the computed and measured envelope correlation coefficient and channel capacity loss.<br>General Secretariat of Education and Scientific Research Libya
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Hraga, Hmeda Ibrahim. "Modelling and design of compact wideband and ultra-wideband antennas for wireless communications : simulation and measurement of planer inverted F antennas (PIFAs) for contemporary mobile terminal applications, and investigations of frequency range and radiation performance of UWB antennas with design optimisation using parametric studies." Thesis, University of Bradford, 2013. http://hdl.handle.net/10454/5668.
Full textAbstract:
The rapidly growing demand for UWB as high data rates wireless communications technology, since the Federal Communications Commission (FCC) allocated the bandwidth of UWB from 3.1GHz to 10.6 GHz. Antenna also plays an essential role in UWB system. However, there are some difficulties in designing UWB antenna as compared to narrowband antenna. The primary requirement of UWB antennas is be able to operate over frequencies released by the FCC. Moreover, the satisfaction of radiation properties and good time domain performance over the entire frequency range are also necessary. In this thesis, designing and analysing printed crescent shape monopole antenna, Planar Inverted F-L Antenna (PIFLA) and Planar Inverted FF Antenna (PIFFA) are focused. A Planar Inverted FF Antenna (PIFFA) can be created to reduce the potential for interference between a UWB system and other communications protocols by using spiral slot. The antennas exhibits broadside directional pattern. The performances such as return loss, radiation pattern and current distribution of the UWB antennas are extensively investigated and carried out. All the results have been demonstrated using simulation and experimentally whereby all results satisfy the performance under - 10dB point in the bandwidth of UWB. In addition the miniaturization of MIMO/diversity Planar Inverted-F antenna (PIFA) which is suitable for pattern diversity in UWB applications is presented. This antenna assembly is formed by two identical PIFAs, a T-shaped decoupling structure which connects the two PIFAs and a finite ground plane with a total compact envelope dimension of 50 x 90 x 7.5mm³. The radiation performance of the proposed MIMO antenna was quite encouraging and provided an acceptable agreement between the computed and measured envelope correlation coefficient and channel capacity loss.
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Stewart, Sally. "Contemporary Kitsch: An examination through creative practice." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2015. https://ro.ecu.edu.au/theses/1717.
Full textAbstract:
This exegesis examines the theoretical concept of contemporary kitsch within a creative practice that incorporates sculptural and installation art. Kitsch is a distinct aesthetic style. Once designated to the rubbish bin of culture, kitsch was considered to be low class, bad taste cheap fakes and copies (Greenberg, 1961; Adorno & Horkheimer, 1991; Calinescu, 1987; Dorfles, 1969). I argue, however, that this is no longer the case. This research critically examines the way in which contemporary kitsch now plays a vital and positive role in social and individual aesthetic life.
Although there are conflicting points of view and distinct variations between recent cultural commentators (Olalquiaga, 1992; Binkley, 2000; Attfield, 2006) on what kitsch is, there is a common sentiment that “the repetitive qualities of kitsch address . . . a general problem of modernity” (Binkley, p. 131). The research aligns the repetitive qualities to what sociologist Anthony Giddens (1991) refers to as “dissembeddedness” (1991) or “the undermining of personal horizons of social and cosmic security” (Binkley, 1991, p.131). The research investigates: how the sensory affect of sentimentality imbued in the kitsch experiences, possessions and material objects people covet and collect, offer a way of the individual moving from disembeddedness to a state of being re-embedded; and locates the ways in which the artist can facilitate the re-embedding experience.
Through this lens it is demonstrated that kitsch has become firmly rooted in our “lifeworlds” (Habermas, 1971), as an aesthetic that reveals “how people make sense of the world through artefacts” (Attfield, 2006, p. 201) and everyday objects; that the sensory affect of sentimentality on connections to possessions and material objects that contemporary kitsch offers is shared across cultures and societies
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Tai, Ming-Fu, and 戴銘福. "The Analysis of Sixth Grade Students' Performance in PISA Test." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/72676663993021230610.
Full textAbstract:
碩士<br>國立臺南大學<br>應用數學系數學科教學碩士班<br>103<br>This paper examines the PISA (Programme for International Student Assessment) performance of primary school sixth grade students. Survey research method has been used to collect the student information. The examination paper (questionnaire) used in this report is “PISA2012 math sample test for primary school students (Chinese version)” published by Taiwan National PISA research center. It contains 4 mathematical content areas and 3 mathematical processes.The examination paper is divided into 9 parts (20 questions in total, 5 marks for each question). The quantitative analysis will be based on the examination scores of 338 sixth grade primary school students in Tainan city.
Key finding of the report:
1. The average PISA score of sixth grade students is 52.29, the standard deviation is 18.09. The students’ grade performance is symmetric (normal distribution). No skewed distribution or U shape distribution are shown. It represents the students’ academic achievement has not yet polarized in primary education.
2. The performance ranking of sixth grade students in mathematical content area from High to low is “Uncertainty and data”, “Space and shape”, ”quantity” and “change and relationship”.
3. The performance ranking of sixth grade students in mathematical process from High to low is “interpret”, “employ” and “formulate”.
4. There is no significant difference between male and female students in overall PISA performance.
5. In mathematical content area, the male students’ performance in “space and shape”is better than female students. However, it shows no difference in other 3 areas.
6. There is no significant difference between male and female students in mathematical process performance.
7. There is a highly positive relationship between “PISA performance” and school mathematical academic performance.
8. There is a positive relationship between “PISA performance” and school Chinese academic performance.
9. For those students who rank in the top of the school mathematic academic performance, the school Chinese academic performance has significant influence on their PISA performance.
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Hsieh, Shin Yu, and 謝欣祐. "Input-output performance PISA international comparisons: Context dependent models and bootstrapping application." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/er2t9a.
Full textAbstract:
碩士<br>健行科技大學<br>國際企業經營系碩士班<br>103<br>The Programme for International Student Assessment (PISA) is a survey conducted by the Organization for Economic Cooperation and Development (OECD) on the skills of international students. The critical abilities assessed correspond with the trending course and educational objectives worldwide, and the assessment results have mostly exhibited satisfactory reliability and validity. Currently, most studies based on the PISA have focused directly on the academic achievements of students in each country without considering the country’s input factors such as national circumstances and economy. Therefore, this study investigated the input–output performance by applying the efficiency model, bootstrapping, and context-dependent model of performance analysis. According to the 2012 PISA results, this study involved assigning mathematics, reading, and scientific capability as input items and designating gross domestic product, the human development index, educational expenditure, urbanization, and student–teacher ratio as output items to investigate the difference in the educational performance of Taiwan and 34 OECD countries.
In academic research, data envelopment analysis is a commonly used method for measuring input–output performance, enabling input–output performance of each decision unit to be objectively assessed. The context-dependent model in data envelopment analysis can be divided into different levels of efficient frontiers, enabling low-ranked countries to emulate the educational performance of middle-ranked countries, and middle-ranked countries to emulate the performance of high-ranked countries. Furthermore, this study incorporated standard deviation and performed bootstrapping through repeated sampling to enhance accuracy. The results indicated that, among high-income countries, Taiwan, Estonia, Finland, Germany, Ireland, Japan, and South Korea exhibited the highest relative efficiency and were worth imitating by other high-income countries. Among low-income countries, Chile, Mexico, Poland, Slovakia, Slovenia, and Turkey demonstrated the most satisfactory educational performance and were worth imitating by other low-income countries.
In the context-dependent model, we employed the relative attractiveness and progress between high and low levels to analyze the improvement directions of and competition among countries of each level. Mexico, Hungary, and Mexico individually exhibited the highest relative attractiveness towards the countries of other levels, indicating that their educational performance was superior and sufficiently satisfactory for imitation by other countries. Luxembourg, Spain, Norway, Sweden, and Iceland required different improvements in progress and should therefore inspect their current educational policies and seek directions of improvement to promote educational performance.
In the performance analysis of bootstrapping, we determined the countries that could be referred to and emulated by countries exhibiting unfavorable educational performance. Moreover, we found that low-income countries can emulate countries with low income and unsatisfactory educational performance because overly discrepant national circumstances inhibited immediate efficiency improvement through imitation. Several low-input countries were imitated numerous times; for example, Turkey was imitated 21 times, followed by Poland (16 times). The educational performance data acquired using the context-dependent model and bootstrapping efficiency analysis can be mutually compared and verified to identify the exact policy orientations and role models for emulation.
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Faria, Liliana Filipa Machado da Silva. "Alunos portugueses no PISA: modelos de regressão multinível." Master's thesis, 2014. http://hdl.handle.net/1822/34674.
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Dissertação de mestrado em Estatística<br>Nas últimas décadas houve uma massificação do ensino, o que incrementou a
heterogeneidade e a diversidade cultural dos alunos com interesses e motivações diversas,
provocando a formação de turmas com características bastantes díspares entre elas e entre
os seus elementos constituintes, onde as motivações, os interesses, os níveis sócio culturais,
as aptidões e os recursos são diferentes e muito diversificados.
Em muitos trabalhos científicos, as populações estudadas têm uma estrutura hierárquica, ou
seja, os indivíduos em estudo estão agrupados em unidades de nível mais baixo, que por sua
vez pertencem a unidades de um nível mais alto e assim sucessivamente.
Quanto à educação, tem-se um exemplo clássico: os alunos descritos por notas, estatuto
social, idade, entre outros pertencem às turmas (e cada aluno não pertence a mais do que
uma turma) que, por sua vez podem ser caracterizadas pelas médias das notas, pelos
professores, entre outros, e as turmas pertencem às escolas (e cada turma não faz parte de
mais do que uma escola). As escolas estão agrupadas nas Direções Regionais de Educação
que por sua vez dependem, em última análise, do Ministério da Educação.
Os modelos multinível são frequentemente utilizados na análise de dados com estrutura
hierárquica.
Neste trabalho pretende-se aplicar os modelos de regressão logística multinível a dados de
alunos (nível 1) e de escolas nacionais (nível 2), com o objetivo de identificar os principais
fatores que podem determinar os resultados escolares dos alunos portugueses
relativamente à literacia em matemática e ciências.
Estes modelos foram aplicados aos dados dos alunos portugueses obtidos no âmbito dos
testes administrados pelo Programa Internacional de Avaliação de Estudantes (PISA) 2009 na
disciplina de matemática e ciências da natureza.<br>In the last few decades there has been a mass education, which increased the heterogeneity
and cultural diversity of students with diverse interests and motivations, causing the
formation of classes with quite disparate characteristics among them and among their
constituents, where the motivations, the interests, the socio-cultural levels, the skills and
resources are different and very diverse.
In many scientific studies, the study populations have a hierarchical structure, therefore, the
subjects in study are grouped in units of lower level, which in turn belong to a higher level
and so on.
Regarding education, we have a classic example: the students are described, among others,
by their grades, social status and age, belong to the classes (each student does not belong to
more than one class) which in turn can be characterized, among others, by their students
average grades and by teachers. The classes belong to schools (and each class is not part of
more than one school) they are grouped into Regional Directorates of Education which in
turn depend, ultimately, on the Ministry of Education.
Multilevel models are often used in the analysis of data with hierarchical structure.
In this work we intend to apply the multilevel logistic regression models to data from
students (level 1) and national schools (level 2), the aim is to identifying the key factors that
may determine the educational achievement of Portuguese pupils in relation to
mathematics and science literacy.
These models were applied to the Portuguese students data obtained from the tests
administered by the Programme for International Student Assessment (PISA) 2009 in the
school subjects of mathematics and natural sciences.
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Chou, Yueh-Ling, and 周玥伶. "A Study on Performance of Educational Resources：Taking PISA 2012 Reading Literacy Results for Example." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/f52ccw.
Full textAbstract:
碩士<br>健行科技大學<br>國際企業經營系碩士班<br>103<br>This paper aims at comparing the correlations between the educational investment and the result of reading education in various countries. The research takes the 15-year-old school-age teenagers from thirty-five major countries in the world as the subject, including the United Kingdom, the United States, Japan, Austria, South Korea and Taiwan. The data are retrieved from the report of “the Programme for International Student Assessment 2012” by the Organization for Economic Cooperation and Development (OECD). The study method adopts data envelopment analysis model.
The data indicate that the average score of reading literacy is 497 points，and Japan gets the highest scores (539 points), followed by South Korea and Finland. Taiwan (523 points) is listed the sixth. Furthermore, according to the analysis of the correlation coefficient between inputs and outputs variables, we observe PISA 2012 reading literacy is in positive correlation with Human Development Index ( HDI) and the percentage of the education expenditure in GDP; the correlation with HDI is higher. When we continue using the data envelopment analysis basic model CCR and BCC to analyze the education performance in all the countries, we find that the relative efficiency value is 1 in the countries including Japan, South Korea, Hungary, Luxembourg, Poland and Turkey, which can be used for the information of the other countries. Finally, when giving the new weights through the Objective Weighting Methods, the results show that the overall technical efficiency value and the pure technical efficiency value decrease a little, but the scale efficiency increases a little. The number of the constant returns to scale (CRS) countries reduces from 27 to 17, and the number of decreasing returns to scale (DRS) countries increases from 6 to 18. By changing weight efficiency value, the study expects to contribute a more reasonable and on-site point of view for the educational researchers in the world to better understand the educational performance and accordingly to give more effective suggestions for the plans and reforms of educational policy.
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Liang, Huimien, and 梁惠棉. "A Comparative Study on reading literacy performance of PISA 2009 between Taiwan and Shanghai." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/39553936715194236426.
Full textAbstract:
碩士<br>國立暨南國際大學<br>教育政策與行政學系<br>99<br>This study aims to analyze Taiwanese students’ reading literacy performance in PISA 2009 reading assessment and to analyze the differences between students’ performance in PISA 2009 reading assessment in Taiwan and Shanghai. In addition, policy orientation made by the Taiwanese government was explored based on the results. The researcher used the results from the PISA 2009 reading assessment of 15-year-olds in Taiwan and Shanghai as content analysis category to explore the students’ reading literacy performance, and their reading engagement and learning strategies in reading.
In this study, assessment results of「access and retrieve」,「integrate and interpret」, and 「reflect and evaluate」 are three main analysis categories to analyze the students’ reading literacy. Students’ reading engagement and learning strategies in reading involve 「reading for enjoyment」,「reading attitude」,「reading diversity」,「online reading activities」,「memorization strategies」,「elaboration strategies」,「control strategies」,「understanding and remembering」, and 「summarizing」。Data were analyzed by means of descriptive statistic, T-test, correlation analysis, and canonical correlation.
Results of this study can be divided into three parts. First, Taiwanese students scored lower in reading engagement and reading strategies.。Second, The statistical quality of reading literacy to reading engagement is high. Third, The statistical quality of reading literacy to reading strategy is high. According to the findings, further suggestions were made as follows. First, education systems should attach importance to students’ reading literacy and modify present education policy. Second, school education should increase students’ reading courses and enhance teacher training. Third, reading engagement and reading strategies of Taiwanese students need improving. Further research is called for by increasing more related variables, comparing the results of difference countries and areas, and monitoring the progress of the reading policy in long term.
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Moreira, Luís Jorge Falcão. "Determinantes do desempenho dos alunos: evidência do programa PiSA para Portugal e Finlândia." Master's thesis, 2019. http://hdl.handle.net/1822/64685.
Full textAbstract:
Dissertação de mestrado em Economia<br>Depois das preocupações relativamente aos níveis de escolaridade que conduziram à
expansão do acesso à educação nos mais variados países, vieram para a esfera pública as
preocupações com a sua qualidade. A qualidade da educação de uma escola ou de um país é
difícil de medir, sendo muitas vezes avaliada através do desempenho dos alunos conduzindo à
produção de rankings. Portugal não é exceção neste domínio. Assumindo o desempenho dos
estudantes um papel central nestas apreciações da qualidade da educação oferecida e recebida,
torna evidente uma necessidade de perceber de forma detalhada o que se esconde por trás do
desempenho dos alunos.
Este trabalho surge assim com o objetivo de perceber quais são os principais
determinantes do desempenho dos alunos (no final do ensino básico). Para o efeito são usados
os dados do Programa PISA (Programme of International Student Assessment ), sendo estudado
o desempenho dos alunos nas principais literacias avaliadas: Matemática, Leitura e Ciências.
Tendo em vista identificar possíveis diferenças em termos de sistemas de ensino, é feita a
comparação entre Portugal e a Finlândia, um país muitas vezes apontado como exemplo em
matéria de sistema de ensino e com muito bons resultados nos testes internacionais.
Com esses dados, é estimado um modelo de regressão linear múltipla, para explicar os
fatores determinantes do desempenho dos alunos nos dois países nas três literacias, em 2015.
Os resultados da estimação revelam a existência de vários determinantes que influenciam a
pontuação das várias Literacias, nomeadamente as características do aluno como o seu género,
a sua idade, se repetiu o ano, a frequência do pré-escolar, o stress e na família, o seu estado
socioecónomico. Por outro lado, algumas das características da escola, como a turma, a
autonomia, a região da escola e o tipo de escola não influenciam o desempenho dos alunos. O
desempenho dos alunos da Finlândia é, em média, superior ao dos alunos portugueses.<br>Concerns over educational attainment have led to expanding access to education in a
wide range of countries; concerns about their quality have come into the public sphere. The
quality of education in a school or country is difficult to measure and is often assessed through
student performance leading to ranking. Portugal is no exception in this domain. Assuming
student performance is central to these assessments of the quality of education offered and
received, there is a clear need to understand in detail what lurks behind student performance.
This work comes with the objective of understanding the main determinants of student
performance (at the end of basic education). For this purpose, data from the Program of
International Student Assessment (PISA) are used, and students' performance in the main
literacies evaluated: Mathematics, Reading and Science. In order to identify possible differences
in education systems, a comparison is made between Portugal and Finland, a country often cited
as an example in education systems and with very good results in international tests.
With this data, a multiple linear regression model is estimated to explain the
determinants of student performance in both countries across the three literacies in 2015.
Estimation results reveal the existence of several determinants that influence the scores of the
various literacies, namely the student's characteristics such as gender, age, repeated a grade,
preschool attendance, stress and in the family, their socioeconomic status. On the other hand,
some of the characteristics of the school, such as class, autonomy, school region and type of
school do not influence student performance. The performance of Finnish students is on average
higher than that of Portuguese students.
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Lu, Wen-Ling, and 盧玟伶. "The Relationship among Self-Concept, Self-Efficacy, and Performance in Mathematics: The PISA 2003 Hong Kong Data." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/77767030958798542916.
Full textAbstract:
碩士<br>國立政治大學<br>教育研究所<br>96<br>The purpose of this study was to examine the relationship among self-concept, self-efficacy, and performance in mathematics. The PISA 2003 Hong Kong data was used as an example. There were 4402 15-year-old participants in this survey. Explore factor analysis was used to identify the good measurement models of self-concept and self-efficacy in PISA 2003. The results showed that the measurement models had high reliability and validity. The other result showed self concept had no direct effects on the mathematics achievement. But under the mediation of the mediator, such as self-efficacy, there was indirect effect on the mathematics achievement. Analysis also showed that the two sets of samples have presented cross validity, the research model is highly acceptable.
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Hsu, Jia-Chen, and 許家禎. "An Analysis of the performance in Scientific Literacy among Different School-System Students: Evidence from Taiwan PISA 2012." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/aee4qw.
Full textAbstract:
碩士<br>國立臺北教育大學<br>自然科學教育學系<br>103<br>With the developments of modern technology, our daily lives are closely related to science in every aspect. Therefore, for the better science education of the coming generations, we need to have a further study of their scientific literacy environments. In order to enhance the national competition among the global village and help students learn better, this study is based on the results of Taiwanese students attending the PISA 2012 Survey and Study to analyze the causes which affect their science study and learning. This research adopts quantity study methods using samples collected form 6,046 students. By applying descriptive statistics, one-way ANOVA and two-way ANOVA methods, this study is conducted to have a further understanding of this topic.
This study is based on the database of PISA 2012, comparing the scientific literacy of students from different school system. The results shows that the scientific literacy of students from different school system presents significant differences in PISA 2012, senior high school students perform best and then junior high school students and junior college students, vocational students shows relatively worse than the others. The factors affect the performance of scientific literacy of different school system includes individual, family and school. In individual aspect, gender shows the impact on the scientific literacy of senior high school and junior college students, but it is not able to conclude which gender performs better. In family aspect: 1. In different school system, parents with higher social economic status or family with more abundant educational resources, students’ scientific literacy perform better; 2. The students of senior high school, vocational high school and junior college who use Mandarin at home perform significantly better in scientific literacy than those who use other languages at home; 3. The time spent on after school studies of junior high school and senior high school students show significant differences on scientific literacy. In school aspect: 1. The scientific literacy of vocational school students show no significant differences on different class hours of Science; 2. For junior high school students, senior high school students and junior college students, the less limitations of school teaching efficiency the better scientific literacy students can perform; 3. The bigger scale the school is for junior high school and junior college students, the better scientific literacy students can perform than smaller scale schools. At last, according to the above conclusions, suggestions are made for future policies and researches.
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Ross, Shelley Paige. "Motivation correlates of academic achievement: exploring how motivation influences academic achievement in the PISA 2003 dataset." Thesis, 2008. http://hdl.handle.net/1828/3209.
Full textAbstract:
The relationship between achievement motivation and academic achievement is complex, but generally, the more a student is motivated to do an academic task, the greater the effort, persistence, and use of cognitive strategies expended on the task, and the better the performance on the task (Pintrich, 2003). The majority of achievement motivation research has been conducted in Western countries (Kumar, 2004). This is a concern as North American classrooms are become increasingly culturally diverse. The present study looked at the relationships between motivation and academic achievement in two distinct cultures: Western (Canada, the United States, and the United Kingdom) and Asian (Hong Kong-China, Japan, and Korea). Hierarchical linear modeling (HLM) was used to analyze data from the Programme for International Student Assessment 2003 (PISA; OECD, 2004). The outcome measures used for all countries were achievement scores in mathematics, science, reading, and problem-solving. The variables examined at the student level were instrumental and intrinsic motivation, performance orientation, and self-efficacy. The variables examined at the school level were teacher support, student morale, and teacher behaviours affecting school climate. In the null models, the intraclass correlations for the Western countries were consistently lower (ranging from .17 to .27) than for the Asian countries (ranging from .36 to .53). In the final HLM models, at Level 1, intrinsic motivation predicted an increase in scores for all six of the Asian country models in which it was significant, but results were inconsistent for the Western country models. Instrumental motivation predicted an increase in scores in seven of the Western country models, but was not significant in any of the Asian country models. Performance orientation predicted a decrease in score in all of the Western country models and in seven of the Asian country models. Self-efficacy predicted increased scores for all models for all countries. All Level 1 results were similar across all academic domains. At Level 2, teacher support was significant in the models for Japan only. Results for teacher behaviours were inconsistent. Student morale was significant in all models for all countries. The findings from this study demonstrate that there are some distinct cultural differences in the relationships between achievement motivation and academic achievement.
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Liu, Chun Yu, and 留君毓. "Study of the Performance in Scientific Literacy among Taiwan’s Different School-System Students: Evidence from PISA 2006, 2009 and 2012." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/97510238149926419952.
Full textAbstract:
碩士<br>國立臺北教育大學<br>自然科學教育學系<br>103<br>The purpose of this research is to compare the differences in scientific literacy among Taiwan’s different school-system students. The research samples are Taiwan students who attended PISA 2006, PISA 2009, and PISA 2012, using the database of PISA 2006, PISA 2009 and PISA 2012 to run the secondary data analysis. And carried out by means of descriptive statistics, one-way ANOVA and two-way ANOVA.
According to the research result of PISA 2006, PISA 2009, and PISA 2012 data, students of different school levels show significant differences. Senior high school students perform better than students from other school systems while the three factors affect science literacy includes individual, family and school.
First, in individual aspect, gender shows significant difference, but not certain in particular school systems.
Second, in family aspect:
1.The more abundant family resources students can have, the better scientific literacy students of different school system can perform.
2.The students use Mandarin at home perform better in scientific literacy than others of different school systems.
3.The higher educational achievement their parents have, the better performance of scientific literacy students of different school systems can achieve. But
in PISA 2012, it shows no differences.
Besides, in school aspect:
1.Students of different school systems show differences from different school scales.
2.The more expectations that parents have on schools, the better scientific literacy students of different school systems can perform.
At last, according to the research results, proposing some suggestions for parents, education presence and further studies.
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Cortès, Pierre-Yves. "Évolution des performances scolaires lors de la transition secondaire-Cégep : influences respectives des évaluations PISA, des performances scolaires antérieures et des contextes de vie." Thèse, 2011. http://hdl.handle.net/1866/6155.
Full textAbstract:
Dans le domaine des évaluations des performances des élèves en fin de scolarité obligatoire, et à côté des traditionnelles évaluations scolaires, s’est développé le Programme International pour le Suivi des Acquis (PISA), harmonisé par l’Organisation de Coopération et de Développements Économiques (l’OCDE). Ce programme a atteint une grande notoriété internationale et tente de s’imposer comme programme qui évalue les compétences des élèves.
Ce mémoire explore dans quelle mesure les évaluations PISA permettent de prédire les performances scolaires des élèves lors de la transition de la fin des études secondaires vers les études collégiales au Québec.
Nous avons construit une variable mesurant l’évolution des performances scolaires entre le secondaire et le Cégep. Nos résultats tendent à confirmer que les évaluations PISA sont en mesure de prédire en partie la continuité des bonnes performances scolaires après contrôle des variables contextuelles des parcours de vie. Cependant, les évaluations scolaires antérieures expliquent mieux cette continuité des bonnes performances scolaires réalisées en première année de postsecondaire que les évaluations PISA. Néanmoins, toujours après contrôle des variables contextuelles, les évaluations scolaires antérieures ne sont pas capables de prédire la différence entre des performances scolaires faibles et fortes lors de la transition secondaire-collégial. Seules les évaluations PISA conservent une faible part pour expliquer ces différences.<br>In order to assess international student performance, the Organisation for Economic Co-operation and Development (OECD) has developed academic assessments, and the Program for International Student Assessment (PISA) for students reaching the end of the compulsory schooling. This program has achieved international reknown and is intended to become a key program for assessing student performance in skills necessary for success in life.
This research presented here explores in to what degree the PISA is capable of predicting academic success of students who are moving into postsecondary studies in the province of Quebec.
We have defined a variable allowing us to predict performance results for students as they transition from high school to Cégep. Our results tend to confirm that the PISA assessments are able to predict in part the continuation of good grades in school when variables related to student life are controlled for. However, an even better indicator than PISA assessments is the earlier grades, which explain the grades earned in the first year of postsecondary studies. However, after controlling for some environmental variables, the early grades are not able to predict the difference between low and high scores during the transition. Only the PISA assessments preserve a low part to predict a decline in school performance for those making the transition to postsecondary studies.
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Shen, Pao-Yi, and 沈保億. "Study the Relation among Weekly Tutorial Hours, Students'' Anxiety and Students'' Performance in Mathematics--Take the Case of PISA 2012." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/q48t74.
Full textAbstract:
碩士<br>健行科技大學<br>國際企業經營系碩士班<br>104<br>This research, aimed at 15-year-old students who participated PISA 2012 in Taiwan, studied the relationship among tutorial, anxiety and performance about mathematics. Based on the path and regression analysis, it indicated that the higher anxiety level students were, the worse they performed; the more tutoring hours students spent, the better they performed; tutorial indeed reduced students’ anxiety, and helped their performance on mathematics. It had an interaction between the tutoring hours after school and students’ anxiety, which also affected their performance. At the same tutoring hours after school, the higher anxiety level students were, the more they were helped by the tutoring; on the contrary, the lower anxiety level students were, the less they were helped through the tutoring. Besides, it showed a high percentage that students performed better by declining their anxiety level.
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Wang, Wei-chuan, and 王偉權. "A Study on the Performance of Junior High School Students and pisa Financial Literacy Test - A Case Study of a Junior High School in Taoyuan City." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/7q3n9v.
Full textAbstract:
碩士<br>健行科技大學<br>財務金融系碩士班<br>106<br>In the process of teaching junior high school mathematics, many students find that there are irregularities in the performance of many students in their daily life. Therefore, this study uses a junior high school in Taoyuan City as a research object to conduct junior high school students financial literacy. The research tool is an example of the "PISA 2015 Financial Literacy Measurement Framework" adapted from the International Student Assessment Program (PISA) of the Organization for Economic Co-operation and Development (OECD) (2015). The test questions include three aspects of "content", "process" and "context", as well as their respective related fields. This study explored the interrelationship between the three test-oriented results and the academic performance of junior high school students.The results show that junior high school students in the current course teaching, the content of the course have the knowledge and application of wealth management knowledge, but junior high school students will learn the relevant financial concepts and cognitions, understanding, analysis, reasoning, evaluation The problems they face and their ability to make effective decisions are not enough, which reflects that they also have low achievement in academic performance. Students who can make effective decisions are also highly successful in their performance. Therefore, this study can help students learn more about wealth management through the academic performance of junior high school students, so as to be a reference for the related courses on designing wealth management strategies and applications so as to help improve the junior high school students'' financial literacy-related abilities and help Junior high school students in the face of financial problems in the future to make wise financial decisions, financial management can be fueling junior high school.
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Monteiro, Marcela Andreia Salgado Pacheco Duarte. "Modelos de regressão multinível: uma aplicação na educação." Master's thesis, 2013. http://hdl.handle.net/1822/25569.
Full textAbstract:
Dissertação de mestrado em Estatística<br>Os Modelos de Regressão Multinível são importantes na análise de estudos
educacionais, pois têm em conta a natureza hierárquica da população em estudo,
o que não seria possível com os modelos de regressão clássica.
Neste trabalho apresentam-se os aspectos principais subjacentes aos Modelos
de Regressão Multinível, sendo abordados vários modelos de entre os quais se
selecionou aquele que melhor se ajusta aos dados.
Os Modelos de Regressão Multinível foram aplicados aos dados dos alunos
portugueses obtidos no âmbito dos testes estandardizados administrados pelo
Programa Internacional de Avaliação de Estudantes (PISA) 2009 na disciplina
de matemática. Pretende-se com esta aplicação analisar o desempenho escolar
dos alunos portugueses nesta disciplina, tentando perceber os principais determinantes
do sucesso dos alunos, bem como estudar a contribuição das escolas
portuguesas no desempenho escolar dos seus alunos.
A principal conclusão deste trabalho é que existe um efeito significativo da
escola a que os alunos pertencem na determinação dos seus resultados escolares,
e o nível socioeconómico e cultural dos alunos é um dos principais determinantes
do desempenho escolar dos alunos.<br>Multilevel Regression Models are important in the analysis of educational
studies as they have into account the hierarchical nature of the population under
study, something that is not possible with classical regression models.
This thesis presents the main aspects underlying the multilevel regression
models, where various models are discussed and the one that best fits the data is
selected.
Multilevel Regression Models were applied to the data on Portuguese students
obtained under the standardized tests administered by the Programme for International
Student Assessment (PISA) 2009 in the discipline of mathematics. The
aim of this application was to analyse the academic performance of Portuguese
students in this discipline while trying to understand which factors are the most
important determinants of students’ success, as well as studying the contribution
of Portuguese schools to the academic achievement of their students.
The main conclusion of this study is that there is a significant e ect of the
school in the achievements of students, and that the socio-economic and cultural
context is one of the main determinants of students’ academic performance.
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Voisin, Annelise. "Systèmes d’accountability basés sur la performance : types, logiques instrumentales et effets sur l’efficacité et l’équité scolaires des systèmes éducatifs d’Europe et du Canada. Une étude comparative à partir des données PISA 2012." Thèse, 2017. http://hdl.handle.net/1866/20060.
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Salgado, Carla Alexandra Silva. "Desempenho dos estudantes portugueses: uma análise multinível bivariada." Master's thesis, 2020. http://hdl.handle.net/1822/73651.
Full textAbstract:
Dissertação de mestrado em Estatística<br>A preocupação com a qualidade do sistema educacional tem aumentado significativamente
nos últimos anos. Os resultados das avaliações internacionais nomeadamente o Programa
Internacional de Avaliação de Estudantes (PISA) da Organização para a Cooperação e
Desenvolvimento Económico (OCDE) em muito têm contribuído para o desenvolvimento das
políticas públicas educativas.
Em estudos de contexto educacional os dados possuem uma estrutura de grupo, ou seja,
uma estrutura hierárquica (em níveis), pelo que, segundo a literatura, a aplicação dos Modelos de
Regressão Multinível é a mais indicada. Os Modelos Multiníveis levam em consideração a
dependência dos dados existentes dentro de cada nível e entre os níveis.
O objetivo deste trabalho é identificar potenciais fatores que possam influenciar o
desempenho dos alunos portugueses em duas áreas científicas, Matemática e Ciências. Com
recurso aos dados do Programa PISA 2015 são estimados Modelos de Regressão Multinível
Bivariada com dois níveis utilizando o software R.
Os resultados permitiram concluir que os efeitos nas duas áreas científicas são muito
semelhantes. Mostraram que o facto dos alunos serem do género masculino, o índice económico,
social e cultural influencia positivamente o desempenho dos alunos a Matemática e Ciências. Por
outro lado, o facto dos estudantes serem imigrantes tem influência negativa no desempenho dos
alunos em Matemática e em Ciências.<br>Concern about the quality of the education system has increased significantly in recent
years. The results of international assessments, namely the International Student Assessment
Program (PISA) of the Organization for Economic Cooperation and Development (OCDE), have
greatly contributed to the development of public education policies.
In educational context studies the data have a group structure, this is, a hierarchy
structure, so, according to the literature, the application of multilevel regression models is the most
indicated. Multilevel models take into account the data dependency within and between levels.
Through the analysis of data from the PISA 2015 Program, Bivariate Multilevel Regression
Models with to levels are estimated to evaluate the performance of students in mathematics and
science using the HLM and R program in order to understand which factors influence the
performance of students in mathematics and in science.
The results showed that the fact that the students were male and the economic, social and
cultural index positively influenced the students´ performance in mathematics and science. On the
other hand, the fact that students are immigrants has a negative influence on the students’
performance.
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Castigo, Manuel João. "Desempenho dos estudantes portugueses: modelos de regressão multinível." Master's thesis, 2017. http://hdl.handle.net/1822/50033.
Full textAbstract:
Dissertação de mestrado em Estatística<br>Em estudos de contexto educacional, a população encontra-se estruturada de
uma forma hierárquica, por exemplo, os alunos estão agrupados em escolas, as escolas estão agrupadas em regiões, as regiões estão agrupadas em países, etc. Ignorando esta estrutura, a utilização de modelos clássicos de regressão linear pode resultar em inferências erradas. Nestes estudos, a aplicação dos modelos de regressão multinível é a mais indicada.
Os modelos multinível são modelos de regressão que se aplicam em situações
em que os dados se estruturam hierarquicamente, incorporando os diferentes níveis observacionais dos dados, produzindo assim inferências mais fiáveis.
O presente trabalho aplica os modelos de regressão multinível de três níveis
(nível 1 - aluno, nível 2 - escola, nível 3 - região), aos dados obtidos no âmbito do Programme for International Student Assessment (PISA) de 2015 em Portugal, no domínio da literacia de Matemática. O objetivo principal é identificar e analisar os diferentes fatores que influenciam o desempenho em Matemática dos alunos de diversas regiões de Portugal.
O estudo permitiu concluir que os fatores como o índice económico, social e
cultural do aluno, ser aluno do género masculino, ter iniciado o primeiro ano de escolaridade com 6 anos, ter o desejo de concluir o grau académico de Ensino Superior Universitário, o número total de alunos na escola e a proporção de raparigas na escola influenciam positivamente o desempenho do aluno em Matemática. Por outro lado, verifica-se que o fator repetir de ano escolar tem influencia negativa no desempenho do aluno em Matemática.<br>In educational context studies, the population is structured in a hierarchical
way, for example, students are grouped in schools, schools are grouped into regions, regions are grouped into countries, etc. Ignoring this structure, the use of classical linear regression models may result in erroneous inferences. In these studies, the application of multilevel regression models is the most indicated.
Multilevel models are regression models that apply in situations where data are
hierarchically structured, incorporating the different observational levels of the data, thus producing more reliable inferences.
The present study applies the three-level multilevel regression models (level 1 -
student, level 2 - school, level 3 - region), to data obtained under the Programme for International Student Assessment (PISA) of 2015 in Portugal, in the field of Mathematics literacy. The main objective is to identify and analyse the different factors that influence the performance in Mathematics of students from different regions of Portugal.
The study concluded that factors such as the economic, social and cultural index of the student, being a male student, started the first year of schooling with 6 years, had the desire to complete the University Higher Education, the total number of students in school and the proportion of girls in school positively influence the student’s performance in mathematics. On the other hand, it is verified that the repetitive factor of school year has a negative influence on the performance of the student in Mathematics.
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Chien, Po-Lun, and 簡伯倫. "Key Factors Influencing Taiwanese Students’ Reading Literacy Performances in PISA." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/04360743029936728200.
Full textAbstract:
碩士<br>大葉大學<br>教育專業發展研究所<br>102<br>This thesis aims to explore the key influential factors of Taiwanese students’ reading literacy by the secondary analysis of PISA. Firstly, fourteen variables extracted from the reporting framework of “PISA 2009 at a Glance” are regarded as reference variables. Secondly, reference variables are evaluated by the Multilayer Perceptron (MLP) procedure according to their own impact on reading literacy achievement. Note that there are two reference variables, namely “folk-urban typology (FUTYP)” and “school system (SCSYS)” respectively. Therefore, let observations be restricted to each level of the foregoing two variables respectively, and then the remaining thirteen reference variables are evaluated again by the same MLP ranking procedure. It follows that the two most important reference variables influencing reading literacy achievement are “enjoyment of reading (JOYREAD)” and “control strategies (CSTRAT)” for each MLP ranking procedure. Finally, FUTYP and SCSYS are considered as two background factors, and then two-way ANOVA is applied to differentiate respective varieties of JOYREAD and CSTRAT. Moreover, a novel method is also proposed to establish a reliable MLP model for enhancing the credibility of the analysis results.
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Cheng, Pai-Hung, and 鄭百宏. "Exploring the Factors Influencing Literacy Performances of Taiwanese Students in PISA 2009." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/52297130875270355323.
Full textAbstract:
碩士<br>大葉大學<br>教育專業發展研究所<br>101<br>The main purpose of this thesis is to find the key influential factors and differentiate respective varieties of Taiwanese students’ literacy performances in PISA 2009. It follows from the mechanism of regression analysis that mathematical literacy is influenced primarily by ‘Control Strategy’; while both scientific and reading literacy are influenced primarily by ‘Read Attitude’. For further study on reading literacy, cluster analysis is employed to categorize variables induced by the student questionnaire data file concerning ‘Read Attitude’, and the required categories are also identified and ranked in the sense of influential significance by the help of regression model again. Moreover, one may apply neural networks to extract the more significant ones from participants’ family background variables highly associated with ‘Read Attitude’. In the sequel, literacy performances of students with different family backgrounds are investigated. The main results of this study are as follows:
(A) According to the classification of the student questionnaire data file concerning ‘Read Attitude’, the concentrated or engagement attitude is the most influential factor on students’ literacy performance.
(B) Among all family background variables, ‘Sex’, ‘Highest Parental Education in Years’, and ‘Home Possessions’ highly affect the enjoyment of reading.
(C) There is an interaction between ‘Highest Parental Education in Years’ and ‘Home Possessions’ , which have a positive impact on reading literacy.
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蔡思恩. "The Pipa Performance Art of Tang Liang-xing." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/79426733838036333308.
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Likhatcheva, Carolina. "Caracterização dos perfis de atividade em tenistas adolescentes e adultos – Estudo comparativo em piso rápido." Master's thesis, 2018. http://hdl.handle.net/10316/86483.
Full textAbstract:
Dissertação de Mestrado em Treino Desportivo para Crianças e Jovens apresentada à Faculdade de Ciências do Desporto e Educação Física<br>Através do presente estudo pretendeu-se analisar o perfil de atividade de tenistas adolescentes e adultos em piso rápido. A amostra foi constituída por 3 tenistas adolescentes (14,33±0,58) e 3 tenistas adultos (20,33±2,52) das categorias sub-16 e séniores. Para a recolha de dados recorreu-se a um equipamento de rastreamento de GPS (FieldWiz, versão A8), com dispositivos individuais.No sentido de sintetizar a evidência cientifica relativa aos perfis de atividade de tenistas adolescentes e adultos, foi realizada uma revisão sistemática de literatura (artigo 1). Para tal, foram realizadas buscas em três bases de dados eletrónicas: Web of Science, Sport Discus e PubMed. Foi utilizada a palavra-chave “tennis”, associada aos termos: “match activity”, “match analisys”, “game activity”, “performance analisys”, “activity profile” e “running”. Após a selecção dos artigos segundo os critérios de inclusão, foram incluídos 5 artigos. Os resultados sugeriram a existência de diferenças entre tenistas adolescentes e adultos, e que os mesmos apresentaram um distância percorrida e número de acelerações superiores em terra batida, comparativamente ao que sucede em piso rápido o que se deve ao maior envolvimento em ações de alta intensidade. Apresentaram também diferenças no desempenho físico durante um jogo, o que pode ser melhorado com a ingestão de cafeína.No sentido de verificarmos se existiam diferenças nos perfis de atividade em tenistas adolescentes e adultos em piso rápido, realizámos um estudo (artigo 2) com 6 tenistas. A recolha de dados foi realizada em campos de piso rápido, em que cada atleta utilizou um GPS e um cardiofrequêncimentro Polar® (T34, Finland) realizando dois jogos à melhor de três sets. Os resultados demonstraram a existência de diferenças na velocidade média entre o grupo de adolescentes e adultos, e entre os dois grupos vitoriosos, nas quais os adolescentes apresentaram valores superiores. Por outro lado, não foram encontradas diferenças no grupo de adolescentes e no grupo de adultos em função do resultado (derrota vs. vitória), e entre o grupo de adolescentes e adultos derrotados.<br>The aim of this study was to analyze the activity profile of teenage and adult tennis players on the fast floor. The sample consisted of 3 adolescent tennis players (14.33 ± 0.58) and 3 adult tennis players (20.33 ± 2.52) of the under-16 and senior categories. For data collection a GPS tracking device (FieldWiz, version A8) was used with individual devices. In order to synthesize the scientific evidence regarding the activity profiles of adolescents and adults, a systematic literature review was performed (article 1). For that, searches were conducted in three electronic databases: Web of Science, Sport Discus and PubMed. The keyword "tennis" was used, associated with the terms "match activity", "match analysis", "game activity", "performance analysis", "activity profile" and "running". After the selection of the articles according to the inclusion criteria, 5 articles were included. The results suggested the existence of differences between adolescent and adult tennis players, and that they present a distance covered and number of accelerations upper in clay compared to what happens in fast floor, which is due to the greater involvement in high intensity actions. They also show differences in physical performance during a game, which can be improved bay caffeine intake.In order to verify if there are differences in the profiles of activity in adolescents and adults in fast floor, we conducted a study (article 2) with 6 tennis players. Data collection was performed in fast-floor courts, where each athlete used a GPS and a Polar® cardio frequency (T34, Finland) performing two games to the best of three sets. The results showed the existence of differences in the average speed between the group of adolescents and adults, and between the two winning groups, in which the adolescents presented higher values. On the other hand, no differences were found in the group of adolescents and in the group of adults according to the result (defeat vs. victory), and among the group of adolescents and adults defeated.
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TSAI, MENG-CHI, and 蔡孟其. "Performance and Research of Pipa Concerto"Little Sisters Of The Grassland"." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/za3c38.
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碩士<br>國立臺北教育大學<br>音樂學系碩士班<br>104<br>Pipa is a plucked string instrument with long history as well as plays an important role in music history. Due to the development of generations, now there is only one structure of pipa, which can be widely used in accompaniment,instrumental ensemble and concerto. Having the 20-year learning experience of pipa, I am familiar with every song for sure. Among all of them, I am deeply attracted by "Little Sisters Of The Grassland", which symbolizes the peak of pipa music skill and performance, thus many researchers and performers discoursed on it and made me research on it more thoroughly. The reason why I chose "Little Sisters Of The Grassland" as my thesis topic is because "Little Sisters Of The Grassland" has many different arrangements and performing ways. Besides, based on the historical development, my thesis researches on every composer’s background and concept of creation then put emphasis on performing and researching on this song. Most important of all, this research is aimed at making changes and adding new materials in different styles, and hoping to have a better understanding of this song. This thesis takes piano accompaniment version of "Little Sisters Of The Grassland" for example to research and perform it.
There are 5 chapters in my thesis, which are introduction、the development history of pipa、the introduction of composer and the creation background of "Little Sisters Of The Grassland"、performance and research of "Little Sisters Of The Grassland", and conclusion. On the basis of creation background of "Little Sisters Of The Grassland", I analyze the performance and research deeply, hoping to help more performers understand the content of this work.
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Hsu, Hong-Chii, and 許宏綺. "Estimate the Effects of High School Students’ PISA Performances－The Case of Taiwan, Hong Kong, Japan and Korea." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/42050949657140911020.
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碩士<br>國立中興大學<br>應用經濟學系所<br>98<br>This thesis applied PISA 2006 dataset to estimate the effects of high school students’ performances in four Asian countries. To do this end, the Probit two-stage least square approach is adopted to estimate the selection of school choice and the education production function. We found that the higher grade, the better grades in the fifteen-year-old students which means the better performances as more education. Regards to gender, male students do better in mathematics and science while female students do better in reading except Japan and Korea. Besides, the significant gap between urban-rural distance for mathematics and reading in Korea and science in Taiwan. These empirical results imply that more resources need to be invested in the rural areas. Furthermore, the family factors including education expenditure and parents’ education level play important roles of influencing the PISA scores.
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Li, Yi-Ling, and 黎奕伶. "Analysis and Performance of Two Pipa Work “A Thousand sweep” and “Flowing Fancies”." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/7nr27r.
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碩士<br>國立臺灣師範大學<br>民族音樂研究所<br>104<br>The music works of 21th century are variable mixtures.. All of the modern pipa works I’ve ever listened, I’m interested in the works which are created by Hong Kong composer: Law Wing Fai most. Law Wing Fai's works are familiar with pipa language. Besides, the means of songs express the thinking and realization for traditional Chinese art spirit. They are so meaningful that I have an idea to investigate. So, I investigate and analyze Luo-Yong-Fei’s recent pipa works: A Thousand Sweeps and Flowing Fancies in my thesis.
There are five chapters in this thesis: Chapter 1: Introduction. It is for the writing direction and methods of this thesis. Chapter 2: Law Wing Fai’s musical career and works. After talking with the composer and collecting a lot of references, I’d like to investigate the musical learning background of the composer, the concepts of creating every kind of musical works and the core of creating. I classify his pipa works to early stage, middle stage and late stage. And I will arrange the created characteristics, style changed and created methods of these three stages. Chapter 3: Analysis and performances of A Thousand Sweeps which is the work in the late stage. I’ll introduce the created background and means of this works in the first part. I’ll analyze the structures and performances of this works in the second part. I’ll analyze the features of this works in the third part. And I’ll investigate the means of this work and Wong Chi Ching’s performance on this musical work. Chapter 4: Analysis and performances of Flowing Fancies which is the work in the late stage. I’ll analyze the work background, means and structures of the work in the first and second part. I’ll analyze the features of this work and emphasize the investigation of harmonics performances on this work. Chapter 5: Conclusion. I’ll conclude the contents from first part to fourth part. And I’ll investigate Law Wing Fai’s pipa works in early, middle and late stages. I’ll also compare the performance methods of A Thousand Sweeps and Flowing Fancies. I’ll describe the music features and the true thinking which the composer wants to express of these two works too. Expect my thesis can be the performance references for other pipa players by creating the detailed analysis of the interview with Law Wing Fai.
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Tseng, Ching-Jui, and 曾菁睿. "Research on Dual-Band PIFA Antenna Design and Performance Improvement for Internet of Things." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/x8ru9w.
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碩士<br>景文科技大學<br>電子工程系電腦與通訊碩士班<br>105<br>This paper presents a miniaturized printed planar inverted-F antenna design for wireless sensor networks, which is suitable for use in Internet products or sensors. It also explores the space environment with metal reflectors and grounding effects. covering frequency bands for Wi-Fi 2.4GHz and 5GHz dual-band antenna.
In this paper, the antenna design is in line with the actual industrial application, the use of metal reflector and wire grounding as experimental parameters, indicating the antenna structure and characteristics of the different changes in the height, and the antenna side of the ground and the bottom of the metal reflector and the practical application of the simulation industry, the grounding effect of the discussion and comparison. The results show that the miniaturized printing planar inverted F antenna with the application environment, the smallest size up to 1 by 1 square centimeter, to meet the industry application specifications, and the relevant research parameters can also be used as an industry reference.
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Tseng, Tzu-Ching, and 曾紫晴. "Research on the performance arts and techniques for the Vietnamese pipa since the late 19th century." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/71012735850942789978.
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碩士<br>國立臺北藝術大學<br>傳統音樂學系碩士班演奏組<br>102<br>According to the historical records, the Vietnamese was affected by Chinese culture for up to two thousand years, especially after "The Canonized System" during the Ming Dynasty, the output of large-scale cultural phenomenon was even more obvious. Experiencing the revolution of dynasties, the Vietnamese pipa was circulating in Ming Dynasty, has six hundred years of heritage and development. From the introduction of the "Bent-neck pipa", developed to "Vietnamese pipa", which is commonly use in Vietnam, has obviously its own characteristics and stand out in Vietnamese society.
In this paper, in addition to the introduction and conclusion, the study divided into four parts: firstly, explore the historical documents from the history fortune of spread to Vietnamese pipa and further understanding of the status in the Vietnamese community which was affected by the Vietnamese Culture. Secondly, the Vietnamese pipa instrument itself, structure with shapes, melody, music and other issues to sort out the inheritance and development of its instruments; Thirdly, to analyze the various regional classic tracks, roughly summed up northern, central and southern regions of the source materials and style tunes with further proposed musical interpretation techniques. Finally, according to the author''s experience of learning to play, elaborate Vietnamese pipa the basic holding posture and the playing method, and on the left hand and right hand playing techniques, in-depth dialysis essence of traditional Vietnamese music playing.
Pertaining to Vietnamese pipa playing method related research, no more abundant than Chinese pipa literature. I hope the subject by discussing, enable pipa artists or music circle academia students can pay more attention to the pipa family members in Vietnam, thus providing multi-oriented traditional Vietnamese music, providing interpretation and performance analysis techniques applied fairly.