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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Device driver reuse via virtual machines

LeVasseur, Joshua Thomas, Computer Science & Engineering, Faculty of Engineering, UNSW January 2009 (has links)
Device drivers constitute a significant portion of an operating system's source code. The effort to develop a new driver set is a sobering hurdle to the pursuit of novel operating system ventures. A practical solution is to reuse drivers, but this can contradict design goals in a new operating system. We offer a new approach to device-driver reuse, with a focus on promoting novel operating-system construction, which insulates the new operating system from the invariants of the reused drivers, while also addressing development effort. Our solution runs the drivers along with their original operating systems inside virtual machines, with some minor reuse infrastructure added to the driver's operating system to interface with the rest of the system. This approach turns the drivers into de-privileged applications of the new operating system, which separates their architectures and reduces cross-influences, and improves system dependability. Virtual machines help reuse drivers, but they also penalize performance. The known solution for improving virtual machine performance, para-virtualization, modifies the operating system to run on a hypervisor, which has an enormous cost: substantial development effort, and abandonment of many of virtualization's benefits such as modularity. These costs contradict our goals for driver reuse: to reduce development effort, and to easily reuse from a variety of operating systems. Thus we introduce a new approach to constructing virtual machines: pre-virtualization. Our solution combines the performance of para-virtualization with the modularity of traditional virtual machines. We still modify the operating system, but according to a set of principles called soft layering that preserves modularity, and via automation which reduces implementation costs. With pre-virtualization we can easily reuse device drivers. We describe our driver-reuse approach applied to a real system: we run virtual machines on the L4Ka::Pistachio microkernel, with reused Linux drivers. We include an evaluation and demonstrate that we achieve throughput comparable to the native Linux drivers, but with moderately higher CPU and memory utilization. Additionally, we describe how to apply pre-virtualization to multiple hypervisor environments. We include an evaluation of pre-virtualization, and demonstrate that it achieves comparable performance to para-virtualization for both the L4Ka::Pistachio and Xen hypervisors, with modularity.
162

Parawasserstoffumwandlung an seltenen Erd-Oxiden Untersuchung des magnetokatalytischen Effekts /

Jugel, Joachim, January 1980 (has links)
Thesis (doctoral)--München, 1980.
163

Hanseniase no estado do Para: perfil epidemiologico da populacao que demanda interacao por reacoes hansenicas

Soares, Claudio Galeno de Miranda. January 2001 (has links) (PDF)
Mestre -- Escola Nacional de Saude Publica, Rio de Janeiro, 2001. / SAUDE PUBLICA.
164

Avaliação do estado nutricional do micronutriente ferro em atletas femininas

Nishimori, Ricardo [UNESP] 24 March 2008 (has links) (PDF)
Made available in DSpace on 2014-06-11T19:23:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-03-24Bitstream added on 2014-06-13T20:50:33Z : No. of bitstreams: 1 nishimori_r_me_arafcf.pdf: 742636 bytes, checksum: 96c5a4eb0c82bed675ee977d260b81e9 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Universidade Estadual Paulista (UNESP) / O objetivo deste estudo foi avaliar o estado nutricional de ferro de 38 jogadoras profissionais de futebol feminino, com idade superior a 21 anos. Foram analisados: ingestão energética, fibras, macro e micronutrientes (cálcio, zinco e ferro, vitaminas A e C) e avaliados segundo as recomendações da “Dietary Reference Intakes” (DRI, 2000; 2001) e da “American Dietetic Association” (ADA, 2000). Para obtenção dos dados foram utilizados os métodos de registro alimentar de três dias e o questionário de freqüência alimentar. O perfil antropométrico foi caracterizado por meio das medidas do peso corporal, altura, dobras cutâneas e uso de fórmulas específicas para determinação dos percentuais de gordura corporal e massa magra. O estado nutricional do micromineral ferro foi avaliado por meio de parâmetros bioquímicos. O perfil antropométrico das atletas apresentou valor médio de porcentagem de gordura corporal, abaixo do encontrado em outros trabalhos. Os valores do IMC estavam dentro das recomendações da “Food and Agriculture Organization of the United Nations” (FAO, 2003). A média de ingestão de proteínas e lipídeos foi adequada as recomendações da ADA (2000). Porém a ingestão energética e de carboidratos foi abaixo da recomendada para 92,11% e 71,05% das atletas, respectivamente. Da mesma forma, a ingestão de fibras foi adequada para apenas 5,26% das atletas. A meta de ingestão de vitamina A e C foi alcançada por 23,68% e 31,58% das atletas, respectivamente. Apenas, 10,53% das atletas apresentaram ingestão certamente adequada para o mineral cálcio. A porcentagem de atletas que alcançou a meta de ingestão de zinco foi maior, 63,16% de adequação. / The objective of this study was evaluate the nutritional status for the iron nutrient of the 38 professional female soccer player, aged over 21 years. The following procedures were carried out: the energy ingestion adequacy, fiber, macro and micronutrients (calcium, zinc, iron, vitamin A, vitamin C) were analyzed and verified using the Dietary Reference Intakes (DRI, 2000; 2001) and American Dietetic Association (ADA, 2000), through the methods a 3-day food record and Frequency Questionnaire; the anthropometrical profile was characterized, through body weight, height, skin fold caliper testing and by using specific formulas in order to determine percent body fat and fat free mass; and the iron nutritional status was evaluated via biochemical parameters. The anthropometrical profile of athletes showed an average percentage of body fat, lower than found in other works. And the values of BMI within the recommendations of the FAO (2003). The average intake of proteins and lipids was appropriate the recommendations of the ADA (2000). But the energy and carbohydrates intake was below the recommended for 92.11% and 71,05% of the athletes, respectively. Just as, the intake of fiber was certainly appropriate for only 5.26% of the athletes. The 23.68% and 31.58% of the athletes achieved the goal of intake of A and C vitamin. Only 10.53% of the athletes had ingested certainly appropriate for the mineral calcium. The percentage of athletes who reached their target was higher intake of zinc, 63.16%. While few players, 10.53%, reached their target for the mineral iron intake. But, in hematological and biochemical analysis, only two (5.26%) athletes have iron deficiency. One of them, with depleted stocks of iron, and another one with Iron Deficiency.
165

Efeito da composição do farelo de soja no desempenho de frangos de corte / Effect of soybean meal composition on broilers performance

Gerber, Luiz Fernando Pigatto January 2004 (has links)
Foi estudada a utilização de diferentes farelos de soja (FS), em dietas isonutritivas, na alimentação de frangos, sobre consumo de ração (CR), peso corporal (PC), ganho de peso (GP), conversão alimentar (CA), metabolizabilidades da energia (ME) e da proteína (MP), digestibilidade da matéria seca (DMS), altura de vilo (AV), profundidade de cripta (PCr) e número de vilosidades (NV). Foram utilizados 312 animais, em 3 tratamentos com 8 repetições cada. Os tratamentos foram: T1-dietas com FS 44% de proteína bruta (PB); T2-dietas com FS 46% PB e T3-dietas com FS 48% PB. Frangos alimentados com as dietas do T3 mostraram melhores GP e CA no período de 8 a 21 dias de idade. De 1 a 21 dia de idade, frangos do T3 apresentaram maiores PC e GP do que aqueles dos T1 e T2. Os frangos do T3 mostraram melhor CA que aqueles do T2. Entretanto, os frangos dos T2 e T1 apresentaram a mesma CA. De 3 a 7 dias de idade, os frangos do T3 foram melhores que aqueles do T1 para ME. Para MP os frangos do T1 e T2 apresentaram resultados semelhantes e superiores àqueles do T3. Para DMS os frangos dos T2 e T3 apresentaram valores inferiores àqueles do T1. De 38 a 42 dias de idade, os frangos dos T2 e T3 apresentaram MEN similares entre si e superiores àqueles do T1. Os frangos do T1 mostraram DP melhor que aqueles do T3. Já para DMS, os frangos dos T2 e T3 apresentaram valores similares e foram superiores àqueles do T1. Outras variáveis estudadas, não referidas neste sumário, não foram afetadas pelos tratamentos. / This study aimed to compare different soybean meal (SBM) sources, on isonutritive broiler diets, on feed consumption (FC), body weight (BW), body weight gain (BWG), feed conversion ratio (FR), energy (EM) and protein metabolizability (PM), dry matter digestibility (DMD), villi height (VH), cript depth (CD) and number of intestinal villi (VN). It was used 312 chicks, in 3 treatments and 8 replicates per treatments. The treatments were: T1- 44% crude protein (CP) SBM diets; T2 – 46% CP SBM diets and T3 – 48% CP SBM diets. Birds from T3 showed the best BWG and FR from 8 to 21 days of age. From 1 to 21 days of age, birds from T3 showed higher BW and BWG than those from T1 and T2. The T3 broilers showed better FR than those from T2. However, the T2 and T1 broilers showed the same FR. From 3 to 7 days of age, the T3 birds showed higher EM than those from T1. The T3 birds showed lower PM than those from T1 and T2. Birds from T2 and T3 showed lower DMD than those from T1. From 38 to 42 days of age, birds from T2 and T3 showed similar EM and they were better than those from T1. Chicken from T1 showed better PM than those from T3. Broilers from T2 and T3 presented similar DMD and they were better than those from T1. The other studied variables, not referred in this summary, were not affected by the dietary treatments.
166

Centro de reunión social. Intervención edificio Club de la Unión de Curicó

Veloz Prieto, Fernanda January 2014 (has links)
Memoria para optar al título de Arquitecto
167

Modelo de negocio para desarrollo de una aplicación móvil de turismo de la región norte y nor-oriente del Perú

Alarcon Chong, Elbert David, Chilon Reyes, Mario David January 2018 (has links)
El norte del Perú, una zona privilegiada por diversos aspectos, tiene hermosas playas, presenta unos platillos estupendos, paisajes maravillosos, Tumbes, Piura, La libertad (Trujillo), Lambayeque (Chiclayo) y Cajamarca son un buen ejemplo de ello; pero muchos de estos lugares no son visitados o conocidos por el mal manejo de información de entidades del sector. Para ello se propuso crear un modelo de negocio de una aplicación móvil para Smartphones del sector turismo, que brinde la información necesaria de los diversos servicios turísticos que ofrece cada región, y que pueda solucionar el problema, entonces se realizó entrevistas previas a empresarios de la región, dedicados al sector turismo para determinar la viabilidad, después se realizaron entrevistas a turistas y viajeros temporales, plasmando sus respuestas en el mapa de empatía, cuya recolección de datos terminaron de validar el modelo de negocio de la aplicación al tener su total aceptación, y a la vez teniendo información sobre qué es lo principal qué buscan al momento de realizar un viaje, cuáles son sus mayores temores y problemas. / Tesis
168

O processo de avaliação de cursos do Plano Nacional de Educação Profissional

Castro Neto, Mariano January 2000 (has links)
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. / Made available in DSpace on 2012-10-17T20:59:15Z (GMT). No. of bitstreams: 0Bitstream added on 2014-09-25T18:23:00Z : No. of bitstreams: 1 172711.pdf: 3744704 bytes, checksum: 996eeafcecababff14c2457219136321 (MD5) / O presente estudo tem como objetivo geral suscitar discussões acerca do processo de avaliação de cursos do Plano Nacional de Educação Profissional - PLANFOR nos níveis de aprendizagem, reação e resultados. Baseado metodologicamente em princípios de pesquisa qualitativa, que defendem a importância da definição do objeto de estudo, da construção de suas técnicas de abordagem através de processos participativos no próprio contexto da pesquisa, este trabalho mostra como nas diferentes etapas do estudo o pesquisador busca, através da fundamentação teórica e da fala dos sujeitos, a fundamentação para os questionamentos acerca do processo de avaliação do Plano Nacional de Educação Profissional. Este estudo permitiu gerar, como resultado acadêmico, um conhecimento da realidade pesquisada, ou seja, das categorias que emergiram dos dados empíricos; uma discussão acerca de possibilidades de construção de novos princípios teóricos para se abordar a avaliação de cursos; e, através de pesquisas direcionadas, propor uma metodologia de avaliação no contexto dos cursos do PLANFOR e da educação profissional. As sínteses finais mostram que é urgente a necessidade de se discutir e pesquisar sobre o processo de avaliação de cursos - educação profissional para os excluídos - pelas características do PLANFOR, pelas características do mercado de trabalho e por ser um programa imprescindível para a educação profissional de trabalhadores, principalmente para o conjunto dos trabalhadores desempregados que, em muitos casos, encontra aí a única alternativa de qualificação profissional.
169

Instituto Chileno Francés de Cultura.

Figueroa Bustos, Jorge Andrés January 2005 (has links)
La definición del tema para desarrollar el proyecto de título surgió del conocimiento de la necesidad que tiene el Instituto Chileno Francés de Cultura, organismo dependiente de la Embajada de Francia, de contar con nuevas instalaciones para desarrollar y ampliar su labor de difusión y cooperación cultural, ya que tiene por misión el impartir la enseñanza de su idioma en nuestro país, a la vez de servir como apoyo a la labor de extensión de las manifestaciones culturales en este país mediante exposiciones, representaciones teatrales, cine, conferencias, organizaciones de viajes de instrucción, entre muchas otras.
170

Efecto del programa Tics y educación sexual sobre el grado de conocimientos y actitudes de los obstetras en relación a la educación sexual integral de los adolescentes

Vega Gonzales, Emilio Oswaldo, Vega Gonzales, Emilio Oswaldo January 2015 (has links)
El objetivo del presente proyecto fue determinar el efecto del uso de las Tecnologías de Información y Comunicación (TICs) sobre el grado de conocimientos y actitudes de los obstetras en relación a la educación sexual de los adolescentes, a través de la aplicación del programa “TICs y Educación Sexual”. La investigación fue de tipo pre-experimental (pretest y postest) y contó con el apoyo del Colegio Regional de Obstetras III Lima – Callao. La muestra estuvo conformada por 25 obstetras y los instrumentos empleados fueron un cuestionario de conocimientos de 25 ítems para medir el grado de conocimientos (Dimensión biológica-reproductiva) y una Escala de Likert de 40 ítems para medir la actitud de los obstetras (Dimensiones socio-afectiva y ético-moral), ambos basados en los “Lineamientos para una Educación Sexual Integral” del Ministerio de Educación y validados durante el proceso. En el análisis de los resultados se observó un incremento en el grado de conocimientos de los obstetras con el uso de las TICs, de un promedio de 14 puntos a un promedio de 16,72 puntos (de 25 puntos posibles), con variación significativa comprobada con la t de student (p = 0,02). En relación a la actitud de los obstetras, se observó que en las dos dimensiones que conformaban la Escala de Likert hubo un aumento de casos con actitud alta (de 12% a 52% en la dimensión socio-afectiva y de 8% a 56% en la dimensión ético-moral), con una variación significativa demostrada con la prueba de Chi cuadrado (p = 0,002 y p = 0,000157, para ambas dimensiones, respectivamente). Se concluye que el programa “TICs y Educación Sexual” tiene un efecto positivo en el grado de conocimientos y actitud de los obstetras en relación a la Educación Sexual de los Adolescentes, aunque son necesarias más investigaciones no sólo con obstetras sino con otros profesionales de salud y docentes. / The aim of this project was to determine the effect of the use of Information and Communication Technologies (ICTs) on the degree of knowledge and attitudes of obstetricians in relation to sexuality education for adolescents, through the implementation of the “ICT and Sex Education". The study was pre-experimental (pretest and posttest) and had the support of the III Regional College of Obstetricians, Lima - Callao. The sample consisted of 25 obstetricians and the instruments used were a questionnaire for knowledge of 25 items to measure the degree of knowledge (biological-reproductive dimension) and a Likert scale of 40 items to measure the attitude of obstetricians (Dimensions socio- affective and ethical-moral), both based on the "Guidelines for Comprehensive Sexuality Education", Ministry of Education and validated during the process. In analyzing the results it was observed an increase in the degree of knowledge of obstetricians averaged 14 points at an average of 16.72 points (out of 25 possible points), with significant variation tested with Student's t test (p = 0.02). Regarding the attitude of obstetricians, it was observed that the two dimensions that formed the Likert Scale was an increase in cases with high attitude (from 12% to 52% in the socio-emotional dimension and 8% to 56% the moral-ethical) dimension, with significant variation demonstrated by the chi-square test (p = 0.002 and p = 0.000157, for both dimensions, respectively). It concludes that "ICTs and Sex Education" program has a positive effect on the level of knowledge and attitude of obstetricians regarding Sex Education of Adolescents, although more research is needed not only obstetricians but with other health professionals and teachers. Keywords: Adolescence, Sexual Education, ICT (Information and Communication). / Tesis

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