Made available in DSpace on 2015-04-11T14:03:21Z (GMT). No. of bitstreams: 1 Davi Viana dos Santos.pdf: 1879718 bytes, checksum: c5d0d7175f9d9c94ab6c07ac4434fa41 (MD5) Previous issue date: 2011-07-21 / CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico / Several factors can influence the success of Software Process Improvement (SPI) programs. Results from previous research have shown that human and social aspects influence these programs in different ways. For this reason, it is important to analyze the human aspects involved on SPI programs to gain a better understanding about their influence on such programs. This thesis presents a research about human aspects influences in software process improvement. In this work, we analyze the major findings of a qualitative research conducted in three different phases to analyze which factors were most influential from view-point of the professionals working in the organizations. Our ultimate goal is to deepen the understanding about how human aspects can influence a SPI program in order to help in the success of future SPI implementation. / Diversos fatores podem influenciar o sucesso de um programa de Melhoria de Processo de Software (MPS). Os resultados de pesquisas anteriores mostram que vários desses fatores são de natureza humana e social. Por esta razão, é importante analisar os aspectos humanos envolvidos a fim de obter uma maior compreensão da influência destes em um programa MPS. Esta dissertação apresenta uma pesquisa sobre a influência dos aspectos humanos em Programas de MPS. Neste trabalho são analisados os principais resultados de uma pesquisa qualitativa conduzida em três diferentes fases para analisar quais fatores tiveram maior influência do ponto de vista dos colaboradores das organizações. O objetivo final é aprofundar a compreensão dos aspectos humanos que podem influenciar um programa de MPS com a finalidade de auxiliar no sucesso de futuros programas de melhoria.

O desenvolvimento comercial da internet possibilitou o surgimento de sistemas de informação que se apoiam no uso da world wide web como plataforma. Esses sistemas baseados na web (web-based systems) têm aplicações em diversas áreas e setores econômicos. No ramo educacional, eles têm sido aplicados como base para os processos de ensino e aprendizagem via computador (e-learning) e são, comumente, denominados de Ambientes Virtuais de Aprendizagem (AVA). Os AVAs podem ser utilizados tanto para o ensino exclusivamente a distância quanto como apoio ao ensino presencial. O presente trabalho tem como objeto de investigação justamente o emprego de ambientes virtuais como tecnologia de apoio ao ensino presencial tradicional dado em sala de aula em cursos de graduação do ensino superior. O crescente uso de AVAs para tal finalidade leva ao questionamento de quais são as dimensões e características de qualidade destes ambientes e como estas dimensões estão associadas com os seus efeitos, quais sejam, a satisfação, o uso e os benefícios percebidos pelos usuários de tais sistemas? Desta forma, o trabalho tem como objetivo identificar as dimensões de qualidade em AVAs, por meio do estabelecimento de um modelo teórico que evidencie quais são os atributos determinantes em relação à qualidade em ambientes virtuais de ensino e quais são os efeitos e os impactos individuais em torno dos usuários discentes. Para tanto, são realizadas duas pesquisas de campo. A primeira é descritiva-explicativa, de abordagem quantitativa, com o emprego de Modelagem de Equações Estruturais, como método de análise e delineamento da pesquisa. Esta pesquisa foi feita com discentes usuários de um ambiente virtual disponibilizado por uma IES e teve como objetivo a elaboração de um modelo de relações de qualidade em AVAs. A segunda pesquisa consiste em um estudo com abordagem essencialmente descritiva, que tem como objetivo classificar quais são as características de relevância nos AVAs, de acordo com o Modelo Kano de classificação de requisitos. Os principais resultados apontam que a qualidade da informação e a qualidade do sistema influenciam na satisfação e nos benefícios percebidos pelos usuários dos AVAs e que as características destas dimensões são consideradas mais significativas do que as funcionalidades disponíveis nos referidos sistemas. / The commercial development of the internet enabled the birth of information systems that rely on the use of the world wide web as a platform. These web-based systems have applications in various fields and economic sectors. In the education sector, they have been used as basis for computer teaching and learning processes (e-learning) and are commonly called Virtual Learning Environments (VLE). These VLEs can be used both for distance teaching exclusively and as support for students in traditional presential classes. This work investigates the virtual environments use as support technology for students in traditional classroom undergraduate courses in higher education. The growing use of VLEs for this purpose raises the following questions: what are the dimensions and quality characteristics of these environments and how are these dimensions associated with their effects, satisfaction, use, and net benefits perceived by users of such systems? Thus, the study aims to identify the VLEs quality dimensions, through the establishment of a theoretical model showing what the relevant VLE dimensions relating to education quality are and what the effects and individuals impacts are for user-learners. To this end, two researches were conducted. The first one was descriptive-explanatory, with a quantitative approach, using Structural Equation Modeling as analysis method and research design. This research was made with students that use a VLE and had the purpose to elaborate a VLE quality relationship model. The second study is essentially descriptive, and aims to classify which features are most relevant in VLEs, according to the Kano´s Model requirements classification. The main findings indicate that the information quality and system quality influence the satisfaction and net benefits perceived by VLEs users and characteristics of these dimensions are considered more important than the functionality features available in such systems.

Context. In this ever-changing world of software development, the process of organizations adopting distributed development is gaining prominence. Implementing various development processes in such distributed environment is giving rise to numerous issues which affects the quality of the product. These issues could be due to the involvement of architects across national borders during the process of development. In this research, the focus is to improve software quality by addressing the impact of maturity and scale between teams and its affect on code review process. Further to identify the issues behind the distribution between teams separated by geographical, temporal and cultural distances. Objectives. The main objective of this research is to identify how different factors such as maturity on quality of deliverables, scale and distribution that impacts the code review process affecting software quality. Based on code review comments in data set, the factors that were examined in this research are evolvability of defects and difference in the quality of software developed by mature and immature teams within code review process. Later on, the issues related to the impact of geographical, temporal and cultural distances on the type of defects revealed during distributed development are identified. Methods. To achieve these objectives, a case study was conducted at Ericsson. A mixed approach has been chosen that includes, archival data and semi-structured interviews to gather useful data for this research. Archival data is one of the data collection method used for reviewing comments in data set and gather quantitative results for the study. We employed approaches such as descriptive statistics, hypothesis testing, and graphical representation to analyze data. Moreover, to strengthen these results, semi-structured group interview is conducted to triangulate the data and collect additional insights about code review process in large scale organizations. Results. By conducting this research, it is inferred that teams with a lower level of maturity produce more number of defects. It was observed that 35.11% functional, 59.03% maintainability, 0.11% compatibility, 0.028% security, 0.73% reliability, 4.96% performance efficiency, 0.014% portability of defects were found from archival data. Majority of defects were of functional and maintainability type, which impacts software quality in distributed environment. In addition to the above-mentioned results, other findings are related to evolvability of defects within immature teams which shows that there is no particular trend in increase or decrease in number of defects. Issues that occur due to distribution between teams are found out in this research. The overall results of this study are to suggest the impact of maturity and scale on software quality by making numerical assumptions and validating these finding with interviews. Interviews are also used to inquire information about the issues from dataset related to the impact of global software engineering (GSE) distances on code review process. Conclusions. At the end of this research it is concluded that in these type of projects, immature teams produce more number of defects than mature teams. This is because when large-scale projects are distributed globally, it is always harder to share and acquire knowledge between teams, increase group learning and mentor teams located in immature sites. Immature developers have problems of understanding the structure of code, new architects need to acquire knowledge on the scope and real time issues for improving quality of software. Using results presented in this thesis, researchers can find new gaps easily to extend the research on various influences on code review process in distributed environment.

This thesis is about comparison between C# and Java in implementation of a university desktop application. In .Net world the prominent IDE is MS Visual studio and DB is MS SQL server. In Java domain we have several IDEs and techniques to approach the problem. The knowledge to choose between these techniques to use is as much as important if a programmer can gain it, he can apply it in many other software engineering domains like a personal management system, library system, etc.     Therefore the importance of a descriptive and applied experience is showing itself up. This thesis has started with a discussion to choose NetBeans IDE and application definition, and use case modeling then it goes through comparison and implementation part. The comparison will go in depth for each use case in this project in its implementation in C# and Java and see which techniques are used. This includes comparison between these two apps in Software quality factors.

[pt] Hoje em dia, entregar software com qualidade, nos prazos previstos e respeitando os custos é um grande diferencial para empresas dedicadas a esta atividade. A constante procura de produtividade e qualidade em projetos de software originou diversos modelos de gerenciamento que procuram auxiliar esta área com metodologias e formas de organização de trabalho. O modelo mais conhecido na área de gerenciamento de software é o Modelo em Cascata, caracterizado pela rigidez e fases bem definidas nos processos. Uma vez encontrados problemas com os modelos rígidos surgiram como alternativa de gerenciamento os métodos ágeis, caracterizados pela agilidade, iteratividade e adaptabilidade para diversos projetos. Diante isto o presente trabalho analisa o problema do gerenciamento de projetos de desenvolvimento de software, e propõe um modelo de referencia de gerenciamento de projetos de software considerando a abordagem tradicional de gerenciamento de projetos assim como a abordagem ágil. A pesquisa analisa a compatibilidade das metodologias ágeis com o Capability Maturity Model Integration (CMMI) que é um modelo de maturidade nos processos de desenvolvimento de software. Finalmente a pesquisa apresenta um estudo de caso, que permitiu observar as forças e fraquezas dos métodos estudados, concluindo que as praticas ágeis contribuem na melhoria e gerenciamento de projetos de software. / [en] Today, delivering quality software, on time and respecting costs is a key differentiator for companies dedicated to this activity. The constant search for productivity and quality in software project management led to several models that seek to help this area with methods and forms of work organization. The best known model in the area of software management is the Waterfall Model, characterized by stiffness and well-defined phases in the process. Once found problems with rigid models have emerged as alternative management of agile methods, characterized by agility, and adaptability to various iterative projects. Given that this paper analyzes the problem of managing software development projects, and proposes a reference model for managing software projects considering the traditional approach of project management as well as the agile approach. The research examines the compatibility of agile methodologies with the Capability Maturity Model Integration (CMMI) is a maturity model in software development processes. Finally the research presents a case study, which allowed us to observe the strengths and weaknesses of the methods studied, concluding that such practices contribute to improved and agile project management software.

In software development process, there can be misunderstandings, communication problems between individual members of the development team and mistakes when writing code or designing applications. These problems need to be resolved before the application is released into the production environment. To discover these errors it is necessary to properly test the software product. All these activities are engaged in discipline called Software Quality Assurance (SQA), which is an integral part of the software development process. The thesis discusses this discipline and procedures for software testing using the Microsoft Visual Studio 2008. The main objective of this work is to create comprehensive methodology for automated testing of web and Windows applications in Microsoft Visual Studio and to verify that procedures in practice. The reader will learn the theoretical basis of software testing at the beginning of the thesis. In next chapter, there are described various features that Microsoft Visual Studio 2008 offers for software testing. Following chapter describes the applications testing in IBM Rational Functional Tester, which is suitable for Windows applications testing (Microsoft Visual Studio 2008 does not support this kind of tests). In other part of the work -- Case Study -- the reader will learn web and Windows applications testing. Case study can serve as a basis for further methodological manual for teams engaged in software testing. The usage of instruments for testing is explained in real examples. At the end of the work there are set out recommendations for the team collaboration using Microsoft Team Foundation Server, and there are also compared the testing instruments and reviewed functions that will come up with Microsoft Visual Studio 2010.

Integral part of all systematically managed software development or maintenance projects is emphasis on continuous quality of all project activities. Because final quality of project deliverables (new or enhanced applications, preconfigured solutions as ie. SAP) is a very big influencer of project success and therefore also important influencer of long-term relationship between customer and contractor(s), this document focuses on ways how to proactively prevent from mistakes (within the whole software development lifecycle) and on techniques helping to establish better quality control of important deliverables through systematic approach, high quality tools and suitable metrics in software testing discipline. This document gradually exposes typical project areas where it is necessary to keep control on quality of project members' outputs, perceives testing in context of typical project consequences, offers practical recommendations in testing methodology, tools as well as widely tested technologies, and explains trends and risks in testing domain. The goal of this document is not only to document a wide range of possibilities given by frequently used testing techniques or tools but also to offer a practical guidance in deployment of test discipline. This document was written by comparing author's professional experience in software quality management with knowledge gathered by reading information sources attached to this document. This document consists of concrete conclusions of this comparison.

This dissertation discusses a software application development framework. The framework supports developing software applications within the context of Joint Command and Control, which includes interoperability with network-centric systems as well as interoperability with existing legacy systems. The next generation of Command and Control systems are expected to be built on common architectures or enterprise middleware. Enterprise middleware does however not directly address integration with legacy Command and Control systems nor does it address integration with existing and future tactical systems like fighter aircraft. The software framework discussed in this dissertation enables existing legacy systems and tactical systems to interoperate with each other; it enables interoperability with the Command and Control enterprise; and it also enables simulated systems to be deployed within a real environment. The framework does all of this through a unique distributed architecture. The architecture supports both system interoperability and the simulation of systems and equipment within the context of Command and Control. This hybrid approach is the key to the success of the framework. There is a strong focus on the quality of the framework and the current implementation has already been successfully applied within the Command and Control environment. The current framework implementation is also supplied on a DVD with this dissertation. / Dissertation (MEng)--University of Pretoria, 2011. / Electrical, Electronic and Computer Engineering / unrestricted

Estudos indicam que a utilização de aplicativos educacionais móveis vêm crescendo continuamente, possibilitando a alunos e professores maior flexibilidade e comodidade na execução de atividades e práticas educacionais. Embora várias instituições já tenham aderido à modalidade de aprendizagem móvel (m-learning), sua adoção ainda traz problemas e desafios organizacionais, culturais e tecnológicos. Um destes problemas consiste em como avaliar adequadamente a qualidade dos aplicativos educacionais desenvolvidos. De fato, os métodos existentes para avaliação da qualidade de software ainda são muito genéricos, não contemplando aspectos específicos aos contextos pedagógico e móvel. Nesse cenário, o presente trabalho apresenta o método MoLEva, desenvolvido para avaliar a qualidade de aplicativos educacionais móveis. O método tem como base a norma ISO/IEC 25000, sendo composto por: (i) modelo de qualidade; (ii) métricas; e (iii) critérios de julgamento. Para validar o método, foram realizados dois estudos de caso; o primeiro consistiu na aplicação do MoLEva para avaliar o aplicativo do ENEM; o segundo consistiu na aplicação do método para avaliação de aplicativos para o ensino de idiomas. A partir dos resultados obtidos, foi possível identificar problemas e pontos de melhoria nos aplicativos avaliados. Além disso, os estudos de caso conduzidos forneceram bons indicativos a respeito da viabilidade de uso do método MoLEva na avaliação de aplicativos educacionais móveis. / Studies indicate that the use of mobile learning applications has grown continuously, allowing students and teachers greater flexibility and convenience in the execution of educational activities and practices. Although several institutions have already adhered to the mobile learning (m-learning) modality, their adoption still brings organizational, cultural and technological problems and challenges. One of these problems is how to adequately evaluated the quality of the mobile learning applications developed. In fact, existing methods for evaluating software quality are still very generic, not considering aspects specific to the pedagogical and mobile contexts. In this scenario, the present work presents the MoLEva method, developed to evaluate the quality of mobile learning applications. The method is based on the ISO / IEC 25000 standard, being composed of: (i) quality model; (ii) metrics; and (iii) criteria of judgment. To validate the method, two case studies were performed; the first consisted of applying MoLEva to evaluate the ENEM application; the second consisted of applying the method for evaluating applications for language teaching. From the obtained results, it was possible to identify problems and improvement points in the evaluated applications. In addition, the case studies conducted provided good indications regarding the feasibility of using the MoLEva method in evaluating mobile learning applications.

Currently, information technology is influencing every walks of life. Our livesincreasingly depend on the software and its functionality. Therefore, thedevelopment of high-quality software products is indispensable. Also, inrecent years, there has been an increasing interest in the demand for high-qualitysoftware products. The delivery of high-quality software products and services isnot possible at no cost. Furthermore, software systems have become complex andchallenging to develop, test, and maintain because of scalability. Therefore, withincreasing complexity in large scale software development, testing has been acrucial issue affecting the quality of software products. In this paper, large-scalesoftware testing challenges concerning quality and their respective mitigations arereviewed using a systematic literature review, and interviews. Existing literatureregarding large-scale software development deals with issues such as requirementand security challenges, so research regarding large-scale software testing and itsmitigations is not dealt with profoundly.In this study, a total of 2710 articles were collected from 1995-2020; 1137(42%)IEEE, 733(27%) Scopus, and 840(31%) Web of Science. Sixty-four relevant articleswere selected using a systematic literature review. Also, to include missed butrelevant articles, snowballing techniques were applied, and 32 additional articleswere included. A total of 81 challenges of large-scale software testing wereidentified from 96 total articles out of which 32(40%) performance, 10(12 %)security, 10(12%) maintainability, 7(9 %) reliability, 6(8%) compatibility, 10(12%)general, 3(4%) functional suitability, 2(2%) usability, and 1(1%) portability weretesting challenges were identified. The author identified more challenges mainlyabout performance, security, reliability, maintainability, and compatibility qualityattributes but few challenges about functional suitability, portability, and usability.The result of the study can be used as a guideline in large-scale software testingprojects to pinpoint potential challenges and act accordingly.