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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.
111

Trygghet i Stockholms stadsdelar : En kvantitativ studie om anledningar till skillnader i trygghetskänsla

Karlsson, Anita, Josefsson, Susanne January 2016 (has links)
I denna uppsats undersöks orsaker till variation i trygghetskänslan bland de boende i Stockholms olika stadsdelar. Tidigare forskning visar på att individuella faktorer påverkar hur trygg man känner sig i sitt bostadsområde, där vissa grupper är otryggare än andra grupper. Tidigare forskning pekar även på att tidigare brottsutsatthet, människor som stör ordningen i bostadsområdet såsom ungdomsgäng och missbrukare, fysiska ordningsstörningar såsom klotter och vandalism, mörker eller nedsatt belysning, boendetid i området och hur bra grannkontakt man har samt att områdets rykte påverkar trygghetskänslan. Urbanteoretisk forskning pekar även ut viss bostadsområdesplanering som mer problematisk ur trygghetsaspekt. I uppsatsen undersöker vi genom regressionsanalys hur mycket vissa av ovanstående faktorer påverkar trygghetskänslan i Stockholms stad genom att använda oss att Stockholms stads trygghetsmätning för år 2014. Resultaten visar att tidigare utsatthet för brott, vandalism och klotter, störande människor i bostadsområdet såsom ungdomsgäng och missbrukare, mörker och dålig belysning samt att sämre grannkontakt bidrar till en ökad otrygghetskänsla i Stockholms stadsdelar. Däremot har boendetid och huruvida man bor i lägenhet eller småhus har ingen påverkan på tryggheten. De oberoende variablerna som har påverkan kan i vissa fall förklara otrygghetskänslan i Stockholms bostadsområden mer än vad kontrollvariablerna gör. Vid införande av kontrollvariablerna kön, utländskt ursprung, funktionsnedsättning, ekonomiska svårigheter samt utbildningsnivå kvarstår även de oberoende variablernas påverkan på otrygghetskänslan. Däremot samexisterar de oberoende variablerna vilket leder till att de påverkar varandra och deras b-koefficientvärde sjunker något och ett fåtal oberoende variabler blir icke signifikanta när de sammanställs. Vårt resultat visar på ett relativt lågt R2-värde (11,1 %), vilket pekar på att det är finns ytterligare faktorer att ta hänsyn till vad gäller trygghetskänsla.
112

A DEVICE DRIVER ARCHITECTURE FOR TELEMETRY APPLICATIONS

DiLemmo, Marc C. 10 1900 (has links)
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / This paper illustrates a device driver implementation used to support a PC compatible telemetry device. Device requirements included operation on Windows NT 4.0, Windows 95, Windows NT 5.0 and Windows 98 platforms. A single device driver was not possible due to the differences between driver requirements on the various operating systems. The Windows Driver Model (WDM) was considered for NT 5.0 and Win98, however, NT 4.0 and Win95 does not support the WDM. To minimize software development and support efforts, it was clear that an architecture compatible to both WDM, NT 4.0 and Windows 95 needed to be developed. The resulting layered device driver architecture provides a common upper interface and uses a register based model to describe the hardware at the lower interface. The common upper interface is compatible with all of the target operating systems and presents a consistent Applications Programming Interface (API) for the telemetry application developer. The lower interface is specific for each platform but contains minimal device specific functionality. A simple register I/O driver is easily implemented using all of the target operating systems. The layered architecture and register based interface to the hardware results in a multiple operating system code set which differs only at the lowest layer.
113

Desktop GPS Analyst Standardized GPS Data Processing and Analysis on a Personal Computer

Hart, Dennis L., Pappas, Johnny J., Lindegren, John E. 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / In the last few years there has been a proliferation of GPS receivers and receiver manufacturers. Couple this with a growing number of DoD test programs requiring high accuracy Time-Space-Position-Information (TSPI) with diminishing test support funds and/or needing a wide area, low altitude or surface tracking capability. The Air Force Development Test Center (AFDTC) recognized the growing requirements for using GPS in test programs and the need for a low cost, portable TSPI processing capability which sparked the development of the Desktop GPS Analyst. The Desktop GPS Analyst is a personal computer (PC) based software application for the generation of GPS-based TSPI.
114

A modular Network Architecture for Lower Cost, High Performance Telemetry Processing

Schumacher, Gary A. 10 1900 (has links)
International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada / There is a continuing need in the aerospace industry for lower cost and more maintainable telemetry data processing systems that can deliver a high level of performance. While systems based on the Intel family of x86 processors and Microsoft operating systems have seen increasing use in lower performance and portable applications, UNIX/VME based systems have been necessary to achieve required performance in higher end, multi-stream applications. Recent developments in the computer industry now promise lower cost alternative to these systems. With currently available technology, it is now possible to provide a powerful distributed processor architecture based entirely on commercial products. The system takes advantage of the latest of Intel Pentium processors, the PCI bus, 100BaseT Fast Ethernet, Microsoft Windows NT, ActiveX technology and NT servers. The architecture offers both current and future cost advantages for test facilities which must support a diverse set of requirements and which must maintain and support systems for many years.
115

Metabolic Responses to Crude Oil during Very Early Development in the Zebrafish (Danio rerio)

Vazquez Roman, Karem Nathalie 08 1900 (has links)
The present study sought to determine some morphological and physiological critical windows during very early development in zebrafish exposed to crude oil. I hypothesized that exposed zebrafish would present a decrease in survival rate and body mass, and an increase in routine oxygen consumption (ṀO2), and critical oxygen tension (PCrit). To test these hypotheses, zebrafish were acutely exposed (24 h) during different days of development (1 to 6 days post-fertilization, dpf) to different concentrations of high-energy water-accommodated fractions (HEWAFs). The endpoints of survival, body mass, routine oxygen consumption, and critical oxygen partial pressure were measured at 7 dpf. Survival rate decreased based on the exposure concentration but not as a function of the day of crude oil exposure. No significant effects were found in PCrit. Body mass was reduced by the different concentrations of HEWAF, with the size of the effect varying with exposure day, with the effect strongest on when exposure occurred at 2 and 3 dpf. Oxygen consumption (ṀO2) differed significantly depending upon the day of exposure in fish exposed to crude oil. Specifically, HEWAF exposure significantly increased ṀO2 in larvae exposed at 3 dpf (9.081 µmol O2/g/h, ±0.559) versus 2 dpf (6.068 µmol O2/g/h, ±0.652) and 6 dpf (6.485 µmol O2/g/h, ±0.609). Overall, the main effects on body mass and ṀO2 occurred at crude oil exposures during 3 dpf. The presence of a critical window in fish is proposed at this developmental time, which coincides with the hatching period.
116

Cross-platform performance ofintegrated, internal and external GPUs

Sandnes, Carl, Gehlin Björnberg, Axel January 2019 (has links)
As mobile computers such as laptops and cellphones are becoming more and more powerful, the options for those who traditionally required a more powerful desktop PC, such as video editors or gamers seem to have grown slightly. One of these new options are external Graphics Processing Units (eGPUs). Where a laptop is used along with an external GPU, connected via Intel’s Thunderbolt 3. This is however a rather untested method. This paper discusses the performance of eGPUs in a variety of operating systems (OS’s). For this research, performance benchmarking was used to investigate the performance of GPU intensive tasks in various operating systems. It was possible to determine that the performance across operating systems does indeed differ greatly in some usecases, such as games. While other use cases such as computational and synthetictests perform very similarly independently of which system (OS) is used. It seems that the main limiting factor is the GPU itself. It also appears to be the case that the interface with which the GPU is connected to a computer does indeed impact performance, in a very similar way between different OS’s. Generally, games seem to loose more performance than synthetic and computational tasks when using an externalGPU rather than an internal one. It was also discovered that there are too many variables for any real conclusions to be drawn from the gathered results. This as theresults were sometimes very inconclusive and conflicting. So while the outcomes can be generalized, more research is needed before any definitive conclusions can be made.
117

Implementação, em ambiente gráfico, de um algoritmo de observabilidade em redes de energia utilizando vetores esparsos / not available

Souza, Cláudio Eduardo Scriptori de 28 February 1996 (has links)
A compreensão das dificuldades que envolvem o comportamento do sistema elétrico de potência tem sido cada vez mais importante e a estimação de estado do sistema é de fundamental importância para a sua operação adequada. Entretanto, torna-se necessário saber se o sistema é observável ou não. Este trabalho, tem como objetivo desenvolver um software que possibilite a visualização gráfica da rede de energia como um todo, ou das sub-redes observáveis do sistema. Como instrumento teórico foram utilizadas teorias e algoritmos desenvolvidos para a análise de observabilidade de redes do sistema de energia elétrica que utilizam a fatoração triangular da matriz ganho bem como o método de vetores esparsos. O algoritmo desenvolvido por [2] foi implementado em ambiente gráfico do Windows, buscando a visualização gráfica do resultado numérico, exibido-a na tela do computador. Por ser essencialmente lógico, este algoritmo foi escolhido para a implementação. Como ferramenta, foi utilizado o compilador Borland C++ for Windows versão 4.0. Os resultados dos testes realizados em redes de 6, 14 e 30 barramentos apontam para: 1) a simplificação da análise de observabilidade, utilizando vetores esparsos e fatoração triangular da matriz ganho; 2) a similiaridade de comportamento dos três sistemas testados, com fortes indícios de que a rotina desenvolvida funciona satisfatoriamente para qualquer sistema, principalmente para os sistemas de maiores quantidades de barramentos e de linhas; 3) a possibilidade de implementação de qualquer resultado numérico, em ambiente gráfico, aproveitando o programa aqui desenvolvido. / In the Operating Center of Electrical Energy system has been every time more and more important the understanding of the difficulties related to the electrical power behavior. In order to have adequate operations of the system the state estimation process is very important. However before performing the system state estimation owe needs to know if the system is observable otherwise the estimation will not be possible. This work has as main objective to develop a software that allows one to visualiza the whole network in case that networks observable or the observable island of the entire network. As theoretical background the theories and algorithm using the triangular factorization of gain matrix as well as the concepts contained on factorization path developed by [2] were used. The algorithm developed by [2] was adapted to the Windows graphical form so that the numerical results of the network observability are shown in the computar screen in graphical form. This algorithm is essentially intead of numerical as the one based on the factorization of gain matrix only [1]. To implement the algorithim previously referred it was used the Borland C++ compilar for windows version 4.0 due to the facilities for sources generation it presents. The results of the tests in the network with 6, 14 and 30 bus leads to: 1) the simplification of observability analysis, using sparse vectors and triangular factorization of the gain matrix; 2) the behavior similarity of the three tested systems with effective clues that the routine developed works well for any systems mainly for systems with bigger quantities of bus and lines; 3) the alternative way of presenting numerical resutts using the program developed here in graphical forms.
118

Desempenho acústico das janelas de hospitais localizados em São Paulo / Acoustic performance of the windows of located hospitals in São Paulo.

Oliveira Júnior, Pedro Nunes de 13 February 2007 (has links)
O ruído de tráfego veicular apresenta-se como um dos principais problemas gerados pela intensa urbanização das cidades, sobretudo nas grandes metrópoles. De fato, esta situação afeta parcela considerável da população, causando incômodo e reflexos no estado de saúde físico e mental. O município de São Paulo, que atualmente possui uma população de aproximadamente 12 milhões de pessoas, detém sem dúvida, a maior quantidade de hospitais de todo o Brasil, sendo que muitos destes estão localizados próximos a vias de tráfego intenso. Esta proximidade, do edifício em relação ao trânsito de veículos, transfere para a fachada parte da responsabilidade em isolar acusticamente os ambientes internos. Assim, quartos e enfermarias do setor de internação, onde habitualmente os usuários deste tipo específico de edificação passam a maior parte do tempo, são afetados pelo problema do ruído urbano, pois em muitos casos, o componente ?janela? não apresenta desempenho acústico adequado, isto é, não propícia um abatimento satisfatório do ruído, visto que na composição da fachada, este componente é o mais sensível à passagem do ruído. Desse modo, esta pesquisa apresenta resultados de ensaios de campo realizados em hospitais localizados na cidade de São Paulo, onde procedemos a medições baseadas na Norma NBR 10829 (Caixilho para edificação ? Janela ? Medição da atenuação acústica) da Associação Brasileira de Normas Técnicas (ABNT), utilizando as janelas aplicadas em quartos ou enfermarias de hospitais sediados em São Paulo, visando com isto, a produção de uma avaliação de desempenho acústico dos casos selecionados. / The noise of transport traffic comes as one of the main problems generated by the intense urbanization of the cities, above all in the great metropolises. In fact, this situation affects considerable portion of the population, causing uncomfortable and reflexes in the physical and mental health condition. The municipal district of São Paulo, that now possesses a population of approximately 12 million people, possesses without a doubt, the largest amount of hospitals of the whole Brazil, and many of these are located close to road of intense traffic. This proximity, of the building in relation to the traffic of vehicles, transfers for the facade leaves of the responsibility in isolating the internal environment acoustically. Like this, rooms and wards of the internment section, where habitually the users of this specific type of construction pass most of the time, they are affected for the problem of the urban noise, because in many cases, the component ?window? it doesn\'t present appropriate acoustic performance, that is, no favorable a satisfactory reduction of the noise, because in the composition of the facade, this component is the most sensitive to the passage of the noise. This way, this research presents results of field rehearsals accomplished at located hospitals in the city of São Paulo, where we proceeded to measurements based in standard NBR 10829 (Façade elements and façades in buildings ? Measurement of airborne sound insulation ? Method of test) of the Associação Brasileira de Normas Técnicas (ABNT), using the applied windows in rooms or infirmaries of headquartered hospitals in São Paulo, seeking with this, the production of an evaluation of acoustic performance of the selected cases.
119

Implementación de mecanismos de transición al protocolo IPv6 en VNUML y en una red Windows

Vivas Ruiz, Jesús Marco 17 April 2017 (has links)
El objetivo de la presente tesis es implementar un laboratorio virtual para simular los mecanismos de transición vigentes en redes IPv4/IPv6, aplicándolos en el enrutamiento dinámico, y para facilitar su implementación en una red de área local con usuarios Windows. La metodología usada en este documento consiste en, por un lado, establecer un enlace a un repositorio remoto con el uso de la herramienta Apache Subversion. En donde, bajo la supervisión del Asesor de la tesis, se realiza el control de versiones de los escenarios virtuales y del documento de la tesis. Así mismo, a través de reuniones presenciales y virtuales con la herramienta de comunicación Skype, se verifica el avance del presente trabajo. Por otro lado, en cuanto al desarrollo de la tesis, en primer lugar, se diseña la topología de los escenarios para su posterior implementación a través de la lógica del lenguaje de programación de la herramienta de virtualización. En segundo lugar, se realiza la ejecución de pruebas de conectividad y eficiencia de los escenarios virtuales. Y, en tercer lugar, a partir del resultado de las pruebas obtenidas en los escenarios virtuales, se selecciona los mecanismos adecuados para lograr la migración de una red con clientes Windows a IPv6. Esto, sin afectar los servicios y la operatividad de la red. En el Capítulo I, se describe la necesidad de adoptar el protocolo IPv6. Se exponen las ventajas del protocolo IPv6 sobre IPv4. Además, se analiza los mecanismos de traducción, NAT64+DNS64, y de túneles, 6to4 y 6RD; se describe el protocolo ICMPv6, el papel que cumple en el direccionamiento dinámico IPv6 y en el sistema de nombres de dominio (DNS) en IPv6. Así mismo, se muestra la situación actual de la Red Académica Peruana RAAP y de los operadores de telecomunicaciones en la adopción de IPv6. En relación a la tendencia actual de los mecanismos de transición en las redes móviles, se describe el estado y uso de las tecnologías, como Dual- Stack y 464XLAT. Por otro lado, el primer aporte de la tesis se muestra en el Capítulo II. La implementación de los escenarios virtuales utilizando una herramienta desarrollada por la Universidad Politécnica de Madrid llamada VNUML. En donde, el único requerimiento que permite ejecutar los escenarios completos es adecuar un solo equipo anfitrión con capacidades de procesamiento y almacenamiento necesarios para la óptima ejecución de cada máquina virtual. En ese sentido, a través del diseño e implementación de cada escenario virtual que corresponde a los mecanismos de traducción NAT64 y DNS64, y los túneles 6to4 y 6RD, se demuestra la capacidad de la herramienta VNUML en el diseño, ejecución y comprobación de los aspectos teóricos señalados en el primer capítulo de esta tesis. El siguiente aporte de esta tesis se muestra en el Capítulo III. La migración de una red privada de usuarios Windows a IPv6. En primer lugar, se hace un despliegue dinámico de direcciones IPv6 a través de DHCPv6 + SLAAC. En segundo lugar, el acceso a los servicios e Internet IPv4 se realiza a través de NAT64 stateful y DNS64. Y, en tercer lugar, el acceso a Internet IPv6 se hace posible con el mecanismo NAT66. De esta manera, se demuestra que es factible desplegar IPv6 de forma transparente para los usuarios finales. / Tesis
120

Technologie Microsoft SharePoint v podnikové praxi

Kapitán, Petr January 2007 (has links)
Cílem této práce je představení a zhodnocení přínosů technologií Microsoft SharePoint. Stěžejními produkty jsou zde Windows SharePoint Services a jejich nadstavba Microsoft Office SharePoint Portal Server. Popsána je základní architektura, základní stavební prvky, webové části, principy bezpečnosti nebo možnosti vyhledávání a customizace. Samostatná kapitola je věnována i možnostem vývoje webových aplikací na platformě SharePoint.

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