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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.
1

Um estudo de caracterização e avaliação de critérios de teste estruturais entre os paradigmas procedimental e OO / A characterization and evaluation study of structural testing criteria between procedural and OO testing

Prado, Marllos Paiva 18 May 2009 (has links)
O Teste de software é uma atividade de garantia da qualidade que tem por finalidade diminuir o número de defeitos do software. Esta atividade contribui para redução do custo de manutenção e para a melhora da qualidade do software, durante o processo de desenvolvimento. Isso tem motivado a investigação e proposta de estratégias, técnicas, critérios e ferramentas de teste para diferentes paradigmas de desenvolvimento, tais como procedimental, orientado a objetos e orientado a aspectos. Vários estudos experimentais têm sido desenvolvidos para avaliar e comparar critérios de teste. Grande parte desses experimentos foram realizados com programas construídos sob um mesmo paradigma ou desconsiderando a influência do mesmo sobre os resultados. Entretanto, é importante avaliar o impacto de um paradigma específico sobre a atividade de teste uma vez que alguns defeitos podem estar relacionados ao seu uso. Este trabalho apresenta um estudo experimental realizado para caracterizar e avaliar o custo de aplicação e a dificuldade de satisfação de critérios de teste, comparando dois paradigmas: o orientado a objetos e o procedimental. O estudo considera critérios de teste funcionais e estruturais e utiliza um conjunto de programas do domínio de Estrutura de Dados. Os termos e fases do processo de experimentação controlada foram usados, à medida em que estes se mostraram adequados, para definir e executar o presente estudo. Os objetivos com a execução dessa pesquisa foram obter resultados iniciais sobre as questões investigadas bem como gerar artefatos que sirvam de base para a definição e condução de futuros experimentos e a criação de pacotes de laboratório. Além disso, pretende-se apoiar, por meio dos materiais gerados, o treinamento e o ensino da atividade do teste de software / Software Testing is a quality assurance activity that aims at reducing the number of software faults. This activity contributes for the reduction of maintenance costs and for software quality improvement during the development process. These factors have motivated the investigation and proposal of several testing strategies, techniques, criteria and tools for different programming paradigms, such as procedural, object-oriented and aspect-oriented. Regarding testing criteria, many experimental studies have been performed to evaluate and compare them. In general, these experiments comprise programs developed under the same paradigm or this influence over the results. However, some faults can be paradigm-related and it is important to evaluate its impact on the testing activity. This work presents an experimental study developed to characterize and evaluate the application cost and strength of testing criteria, comparing two programming paradigms: object-oriented and procedural. This study considers functional and strutural testing criteria and uses a set of programs from the data structure domain. Terms and phases from controlled experimentation process were used, as long as they showed to be adequated, to define and execute the present study. The research aims at obtaining initial results about the questions investigated as well as generating artifacts which support the definition and conduction of future experiments and the creation of laboratory packages. In addition, it intends to support, through the materials generated, the training and teaching of software testing activity
2

Um estudo de caracterização e avaliação de critérios de teste estruturais entre os paradigmas procedimental e OO / A characterization and evaluation study of structural testing criteria between procedural and OO testing

Marllos Paiva Prado 18 May 2009 (has links)
O Teste de software é uma atividade de garantia da qualidade que tem por finalidade diminuir o número de defeitos do software. Esta atividade contribui para redução do custo de manutenção e para a melhora da qualidade do software, durante o processo de desenvolvimento. Isso tem motivado a investigação e proposta de estratégias, técnicas, critérios e ferramentas de teste para diferentes paradigmas de desenvolvimento, tais como procedimental, orientado a objetos e orientado a aspectos. Vários estudos experimentais têm sido desenvolvidos para avaliar e comparar critérios de teste. Grande parte desses experimentos foram realizados com programas construídos sob um mesmo paradigma ou desconsiderando a influência do mesmo sobre os resultados. Entretanto, é importante avaliar o impacto de um paradigma específico sobre a atividade de teste uma vez que alguns defeitos podem estar relacionados ao seu uso. Este trabalho apresenta um estudo experimental realizado para caracterizar e avaliar o custo de aplicação e a dificuldade de satisfação de critérios de teste, comparando dois paradigmas: o orientado a objetos e o procedimental. O estudo considera critérios de teste funcionais e estruturais e utiliza um conjunto de programas do domínio de Estrutura de Dados. Os termos e fases do processo de experimentação controlada foram usados, à medida em que estes se mostraram adequados, para definir e executar o presente estudo. Os objetivos com a execução dessa pesquisa foram obter resultados iniciais sobre as questões investigadas bem como gerar artefatos que sirvam de base para a definição e condução de futuros experimentos e a criação de pacotes de laboratório. Além disso, pretende-se apoiar, por meio dos materiais gerados, o treinamento e o ensino da atividade do teste de software / Software Testing is a quality assurance activity that aims at reducing the number of software faults. This activity contributes for the reduction of maintenance costs and for software quality improvement during the development process. These factors have motivated the investigation and proposal of several testing strategies, techniques, criteria and tools for different programming paradigms, such as procedural, object-oriented and aspect-oriented. Regarding testing criteria, many experimental studies have been performed to evaluate and compare them. In general, these experiments comprise programs developed under the same paradigm or this influence over the results. However, some faults can be paradigm-related and it is important to evaluate its impact on the testing activity. This work presents an experimental study developed to characterize and evaluate the application cost and strength of testing criteria, comparing two programming paradigms: object-oriented and procedural. This study considers functional and strutural testing criteria and uses a set of programs from the data structure domain. Terms and phases from controlled experimentation process were used, as long as they showed to be adequated, to define and execute the present study. The research aims at obtaining initial results about the questions investigated as well as generating artifacts which support the definition and conduction of future experiments and the creation of laboratory packages. In addition, it intends to support, through the materials generated, the training and teaching of software testing activity
3

Hur den känslomässiga upplevelsen av utomhusbelysning påverkar vägval : Hur vertikal-, horisontal- och målpunktsbelysning påverkar vägval i bebyggd utomhusmiljö. / How the emotional experience of outdoor lighting affects path selection : How vertical, horizontal and objective lighting affects path selection in built outdoor environment.

Johansson, Anna, Kensing Kindh, Sophia January 2019 (has links)
Syftet med denna studie är att ta reda på hur vi ska belysa vår bebyggda utomhusmiljö, genom att ta reda på vilken ljusfördelningsprincip utav av vertikal-, horisontal- eller målpunktsbelysning som är den mest effektiva för att leda människor. För att uppfylla studiens syfte utfördes ett fullskaligt experiment i verklig utomhusmiljö där de tre ljusfördelningprinciperna ställdes mot varandra i tre scenarion. De 29 deltagarna utvärderade sina känslomässiga upplevelser genom The Discrete Emotions Questionnaire (DEQ) efterföljt av vägval och semistrukturerade intervjuer. De olika datainsamlingsmetoderna gav oss möjlighet att undersöka ljusfördelningsprinciperna i förhållande till varandra genom triangulering. Studiens hypotes om att människor väljer att gå mot den ljusfördelningsprincip som inger mest positiva känslor bekräftas, bland annat av resultatets signifikanta skillnader. Av vilka det även framgår att människan blir olika känslomässigt påverkad av olika ljusfördelningsprinciper, samt att målpunktsbelysning är den ljusfördelningsprincip som människor helst vill gå mot. Det visade sig även att det är viktigt att kunna avläsa omgivningen, rummets gränser och att ha en siktlinje, vilket kan påverka den känslomässiga upplevelsen och den upplevda tryggheten. Samt att resultatet tyder på att den känslomässiga reaktionen är mer relaterad till upplevelsen av ljuset än platsens utseende. Med denna kunskap skapas större förståelse för hur belysning kan planeras i bebyggd utomhusmiljö. Vår moderna livsstils skapar ett behov av att kunna vistas fritt i stadsrummet även under dygnets mörka timmar, därigenom har utformningen av belysningsanläggningarna blivit viktiga då dessa belysningsanläggningar måste tillfredsställa människans behov av att känna trygghet. Eftersom dessa belysningsanläggningar påverkar den sociala, ekonomiska och ekologiska hållbarheten finns det ett behov av att ta reda på hur man effektivt kan leda människor med ljus. Studiens resultat visar på goda möjligheter att kunna leda människor till vissa vägar genom att använda sig av målpunktsbelysning. Detta kan i förlängningen ge möjlighet att reducera klimatpåverkan via minskad energikonsumtion då man kan minska den totala belysningen genom att leda människor via vägar där man koncentrerat belysningen på valda objekt. / The purpose of this study is to find out how to illuminate our built outdoor environment, by finding out which light distribution principle of vertical, horizontal or visual objective lighting is the most effective for guiding people. To fulfill the purpose of the study, a full-scale experiment was conducted in a real outdoor environment where the three light distribution principles were set against each other in three scenarios. The 29 participants evaluated their emotional experiences through The Discrete Emotions Questionnaire (DEQ) followed by choice of paths and semi-structured interviews. The different data collection methods allowed us to investigate the light distribution principles in relation to each other through triangulation. The study's hypothesis that people choose to go against the light distribution principle that gives rise to the most positive emotions is confirmed, among other things, by the significant differences in the results. From which it is also evident that people is variously emotionally influenced by different light distribution principles, and that visual objective lighting is the light distribution principle that people prefer to go against. It was also found that it is important to be able to read the surroundings, the boundaries of the room and to have a line of sight, which can affect the emotional experience and the perceived security. The result suggests that the emotional reaction is more related to the experience of the light than the appearance of the place. This knowledge creates a greater understanding of how lighting can be planned in a built outdoor environment. Our modern lifestyle creates a need to be able to reside freely in the urban space even during the dark hours, which is why lighting design has become a crucial aspect of satisfying peoples need to feel secure. As these lighting systems affect social, economic and ecological sustainability, there is a need to find out how to effectively manage people with light. The study's results show good opportunities to be able to lead people to certain paths by using visual objective lighting. This can, in the long run, give the opportunity to reduce the climate impact through reduced energy consumption, since it is possible to reduce the total illumination by directing people through selected roads where the lighting is concentrated on selected objects.
4

Variation Of Marine Boundary Layer Characteristic Over Bay Of Bengal And Arabian Sea

Rai, Deepika 08 1900 (has links) (PDF)
The atmospheric boundary layer (ABL) is the lowest layer of the atmosphere where surface effects are felt on time scales of about an hour. While its properties are determined by the surface characteristics, season and synoptic conditions, they in turn determine convective cloud properties and are required for the representation of cloud processes in atmospheric models. Further, interaction of the ABL with the surface layer of the ocean is a key component of ocean-atmosphere coupling. ABL characteristics over ocean surrounding the sub-continent become very important for understanding the monsoon processes during the monsoon season because the roots of many monsoon systems, that give rain to India, are over there. In this thesis data used are from three major field experiments namely the Bay of Bengal Monsoon Experiment (BOBMEX, 1999), Arabian Sea Monsoon Experiment (ARMEX, in two phases, ARMEX-I during 2002 and ARMEX-II in 2003), and Continental Tropical Convergence Zone (CTCZ) experiment (Pilot in 2009) which were carried out under the Indian Climate Research Programme (ICRP). While there have been few studies on ABL characteristics for individual cruises, a comprehensive study considering all available radiosonde data from the above cruises has been missing. This study fills this gap and focuses on the vertical structure of ABL using more than 400 high resolution Vaisala GPS radiosonde data collected over Bay of Bengal and Arabian Sea. The study attempts at first to look at the ABL characteristics of individual cruises and then compare and contrast them over the Bay of Bengal and Arabian Sea. ABL height Hm, estimated by using virtual potential temperature (θv) profile, shows diurnal variation during weak phase of convection while maximum in early morning during active phase of convection. Different variables i.e. moist static energy (h), specific humidity (q), convective available potential energy (CAPE), virtual potential temperature (θv) and equivalent potential temperature (θe) also differ during weak and active convection periods. Conserved variables mixing line approach gives the height up to which ground thermals penetrate in the vertical. This height, denoted by MH that represents the actual ABL height, is 2-3 times larger than Hm when shallow convective clouds are present. In general both Hm and MH are 20-30% larger over Arabian Sea compares to that over Bay of Bengal. Comparison of surface convective available potential energy (CAPE) and equivalent potential temperature (θe) between normal and deficit monsoon years shows that convective instability was as large in deficit years. This means that dynamic and not thermodynamics, controlled the occurrence of convection.

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