Submitted by Liliane Ferreira (ljuvencia30@gmail.com) on 2018-11-26T13:24:36Z No. of bitstreams: 2 Dissertação - Gabriel da Silva Vieira - 2018.pdf: 13740412 bytes, checksum: ddb7d4353e4f2d7650b087dd0d4bd796 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2018-11-26T13:43:18Z (GMT) No. of bitstreams: 2 Dissertação - Gabriel da Silva Vieira - 2018.pdf: 13740412 bytes, checksum: ddb7d4353e4f2d7650b087dd0d4bd796 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-11-26T13:43:18Z (GMT). No. of bitstreams: 2 Dissertação - Gabriel da Silva Vieira - 2018.pdf: 13740412 bytes, checksum: ddb7d4353e4f2d7650b087dd0d4bd796 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2018-10-05 / Outro / Disparity maps are key components of a stereo vision system. Autonomous navigation, 3D reconstruction, and mobility are examples of areas of research which use disparity maps as an important element. Although a lot of work has been done in the stereo vision field, it is not easy to build stereo systems with concepts such as reuse and extensible scope. In this study, we explore this gap and it presents a software architecture that can accommodate different stereo methods through a standard structure. Firstly, it introduces some scenarios that illustrate use cases of disparity maps and it shows a novel architecture that foments code reuse. A Disparity Computation Framework (DCF) is presented and we discuss how its components are structured. Then we developed a prototype which closely follows the proposal architecture and we prepared some test cases to be performed. Furthermore, we have implemented disparity methods for validation purposes and to evaluate our disparity refinement method. This refinement method, named as Segmented Consistency Check (SCC), was designed to increase the robustness of stereo matching algorithms. It consists of a segmentation process, statistical analysis of grouping areas and a support weighted function to find and to fill in unknown disparities. The experimental results show that the DCF can satisfy different scenarios on-demand. Besides, they show that SCC method is an efficient approach that can make some enhancements in disparity maps, as reducing the disparity error measure. / Mapas de disparidade são elementos cruciais em sistemas de visão estéreo. Navegação autônoma, reconstrução 3D e mobilidade são exemplos de área de pesquisa que utilizam mapas de disparidade como elementos-chave. Embora muitos trabalhos têm sido feitos na área de visão estéreo, ainda assim, não é trivial construir sistemas estéreos com aplicação de conceitos como reutilização e escopo extensível. Neste estudo, exploramos essa lacuna e apresentamos uma arquitetura de software capaz de acomodar diferentes métodos de visão estéreo através de uma estrutura bem definida. Inicialmente, cenários que ilustram usos de mapa de disparidade são introduzidos e uma arquitetura que fomenta reutilização de código é apresentada. Dessa forma, um Framework de Cálculo de Disparidade (FCD) é apresentado e seus componentes são discutidos a fim de especificar a sua estrutura. Em seguida, um protótipo que segue a arquitetura proposta é apresentado e alguns casos de teste são preparados e executados. Além disso, métodos de cálculo de disparidade foram implementados para propostas de validação e para avaliar o método de refinamento de disparidade proposto pelos autores. Esse método de refinamento, chamado de Checagem de Consistência de Segmento (CCS), foi projetado para aumentar a robustez de algoritmos de combinação estéreo. Trata-se de um método que utiliza um processo de segmentação preliminar, análise estatística de áreas definidas e função ponderada de suporte para encontrar e preencher disparidades marcadas como desconhecidas. Os resultados dos experimentos realizados apontam que o FCD pode satisfazer diferentes cenários sob demanda. Além disso, os resultados mostram que o método CCS é uma abordagem eficiente que pode trazer certos melhoramentos em mapas de disparidade, como reduzir a medida de erro no cálculo de correspondências estéreo.

Submitted by Marlene Santos (marlene.bc.ufg@gmail.com) on 2017-09-27T19:07:42Z No. of bitstreams: 2 Dissertação - Paulo Marcos Soares Rodrigues - 2017.pdf: 2420186 bytes, checksum: 82fdcdcecf770aea2d551db024ccec5d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-10-02T13:41:25Z (GMT) No. of bitstreams: 2 Dissertação - Paulo Marcos Soares Rodrigues - 2017.pdf: 2420186 bytes, checksum: 82fdcdcecf770aea2d551db024ccec5d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-10-02T13:41:25Z (GMT). No. of bitstreams: 2 Dissertação - Paulo Marcos Soares Rodrigues - 2017.pdf: 2420186 bytes, checksum: 82fdcdcecf770aea2d551db024ccec5d (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-08-30 / This work aims to develop a software design that allows internationalization in relation to the different sign languages. The Sign Language, besides being a linguistic system, is an element of constitution of the deaf subject, adding its identity and culture. By this reason, it is so important that the contents of the computerized systems can also be available in sign languages. From a systematic review of the literature that showed the absence of methods, tools or techniques that made references to the internationalization of software for sign languages, a high-level architecture and a detailed design were elaborated contemplating the main requirements of quality. The requirements were extracted with the help of teachers, students and deaf interpreters and listeners of the Faculdade de Letras / Libras of the Universidade Federal de Goiás (UFG). The case study is a Web application of the questionnaire about quality of life, wich was originally proposed by the World Health Organization, translated to Libras by the Letters Faculty of the Federal University of Goiás (UFG), in partnership with the Federal University of Rio Grande do Sul UFRGS). After the adaptation of the application to the internationalization for sign language, a static analysis of three versions of the application was performed. The original version, a version suitable for internationalization for sign languages and a third version with the addition of more than one sign language. The analyzes sought to determine the qualitative effects of the appropriateness of the original application for the internationalization for sign languages and the addition of new translations to an application already suitable to the proposed architecture. / Este trabalho tem como objetivo desenvolver um projeto de software que permita a internacionalização em relação às diversas línguas de sinais existentes. A Língua de Sinais, além de ser um sistema linguístico, é um elemento de constituição do sujeito surdo, agregando sua identidade e cultura. Por isso é tão importante que os conteúdos dos sistema informatizados possam estar disponíveis também em línguas de sinais. A partir de uma revisão sistemática da literatura que evidenciou a ausência de métodos, ferramentas ou técnicas que fizessem referências a internacionalização de softwares para línguas de sinais, foi elaborado uma arquitetura de alto-nível e um projeto detalhado contemplando os principais requisitos de qualidade. Os requisitos foram extraídos com a ajuda de professores, alunos e interpretes surdos e ouvintes da Faculdade de Letras/Libras da Universidade Federal de Goiás (UFG). Como estudo de caso foi escolhido uma aplicação Web do questionário de qualidade de vida, originalmente proposto pela Organização Mundial da Saúde traduzido para Libras pela Faculdade Letras da Universidade Federal de Goiás (UFG), em parceria com a Universidade Federal do Rio Grande do Sul (UFRGS). Após a adequação da aplicação à internacionalização para língua de sinais, foi realizado uma análise estática de três versões da aplicação. A versão original, uma versão adequada a internacionalização para línguas de sinais e uma terceira versão com a adição de mais de uma língua de sinal. As análises buscaram determinar os efeitos qualitativos da adequação da aplicação original para a internacionalização para línguas de sinais e da adição de novas traduções a uma aplicação já adequada a arquitetura proposta.

I detta papper, designas och utvärderas en händelsebaserad Android-applikation. MyWorld är en mobil applikation. Händelser som sker i användarens närhet kan ses på en karta. Genom arbetet används beprövade metoder för att skapa en väldefinierad design. Det tas upp problem och lösningar på designrelaterade problem i en händelsebaserad applikation. Designen utvärderas sedan genom användartester som använder mått av framgång, felsteg och tillfredställdhet. Genom en process på tre iterationer har arbetet gett applikationen en ny design som blivit mer användbar för användarna. I slutskedet finns en färdig designprototyp som är implementerad i applikationen.

[pt] Um dos requisitos para a usabilidade de um sistema interativo é que os usuários adquiram o conhecimento, denominado de modelo de usabilidade, sobre como aplicar as soluções-em-potencial concebidas pelo designer às tarefas do seu domínio. A abordagem da Engenharia Semiótica apresenta uma perspectiva na qual um sistema interativo é um artefato de metacomunicação através do qual o designer envia uma mensagem que comunica o modelo de usabilidade para o usuário. Partindo desta perspectiva e baseado nos conceitos de semiótica das teorias de Charles S. Peirce e de Umberto Eco desenvolvemos modelos teóricos que descrevem o modelo de usabilidade como sendo o conteúdo da mensagem do designer, a interface de usuário como a sua expressão e o design como sendo uma atividade de produção de signos apoiada por um sistema semiótico, composto por uma linguagem de especificação e por regras que correlacionam as mensagens especificadas aos widgets dos principais padrões e ferramentas de interfaces de usuário. / [en] Interactive systems usability could be enhanced if users learn all the knowledge - the usabilty model - that capability them in applying designer`s potential solutions to domain tasks. The Semiotic Engineering approach perceives interactive systems as metacommunication artifacts that send a message from designer to users whose expression is the lower-level messages exchanged between user and system and whose content is the usability model. Starting from this perspective and based on semiotic theory concepts from Charles S. Peirce and Umberto Eco we present conceptual models to the interface as the expression and to the usability model as the content of designer`s message. We also develop a semiotic system to support user interface design. The system is composed by a specification language and rules that maps specified messagens to user interface widgets. Our emphasis here is not in aesthetics aspects of user interfaces, but in the interactive and performing nature of the interface message as it is carried throughout the computational medium. / [es] Uno de los requisitos para el uso de un sistema interactivo es que los usuarios adquieran conocimiento (denominado de modelo de usabilidad) sobre como aplicar las soluciones-en-potencial concebidas por el diseñador a las tareas de su dominio. El abordaje de la Ingeniería Semiótica presenta define un sistema interactivo como un artefacto de metacomunicación a través del cual el diseñador envía un mensaje que comunica el modelo de usabilidad para el usuario. Partiendo de esta perspectiva y considerando los conceptos de semiótica de las teorías de Charles S. Peirce y de Umberto Eco, desarrollamos modelos teóricos que describen el modelo de usabilidad como el contenido del mensaje del diseñador; la interfaz de usuario como su expresión y el diseño como una actividad de producción de signos apoyada por un sistema semiótico, compuesto por un lenguaje de especificación y por reglas que correlacionan los mensajes especificados a los widgets de los principales padrones y herramientas de interfaces de usuario.

This work describes the process of the design of a flight software for a space-qualified device, outlines the development and testing of the SW, and provides a description of the final product. The flight software described in this work has been developed for the project Demise Observation Capsule (DOC). DOC is a device planned to be attached to an upper stage of a launch vehicle and observe its demise during atmospheric re-entry at the end of its mission. Due to constraint on communication time during the mission and the need to maximize the amount of transferred data, a custom communication protocol has been developed. / Demise Observation Capsule

Le contrôle de version est la pierre angulaire des processus de développement de logiciels modernes. Tout en construisant des logiciels de plus en plus complexes, les développeurs doivent comprendre des sous-systèmes de code source qui leur sont peu familier. Alors que la compréhension de la logique d'un code étranger est relativement simple, la compréhension de sa conception et de sa genèse est plus compliquée. Elle n'est souvent possible que par les descriptions des révisions et de la documentation du projet qui sont dispersées et peu fiables -- quand elles existent. Ainsi, les développeurs ont besoin d'une base de référence fiable et pertinente pour comprendre l'historique des projets logiciels. Dans cette thèse, nous faisons les premiers pas vers la compréhension des motifs de changement dans les historiques de révision. Nous étudions les changements prenant place dans les métriques logicielles durant l'évolution d'un projet. Au travers de multiples études exploratoires, nous réalisons des expériences quantitatives et qualitatives sur plusieurs jeux de données extraits à partir d'un ensemble de 13 projets. Nous extrayons les changements dans les métriques logicielles de chaque commit et construisons un jeu de donnée annoté manuellement comme vérité de base. Nous avons identifié plusieurs catégories en analysant ces changements. Un motif en particulier nommé "compromis", dans lequel certaines métriques peuvent s'améliorer au détriment d'autres, s'est avéré être un indicateur prometteur de changements liés à la conception -- dans certains cas, il laisse également entrevoir une intention de conception consciente de la part des auteurs des changements. Pour démontrer les observations de nos études exploratoires, nous construisons un modèle général pour identifier l'application d'un ensemble bien connu de principes de conception dans de nouveaux projets. Nos résultats suggèrent que les fluctuations de métriques ont le potentiel d'être des indicateurs pertinents pour gagner des aperçus macroscopiques sur l'évolution de la conception dans l'historique de développement d'un projet. / Version control is the backbone of the modern software development workflow. While building more and more complex systems, developers have to understand unfamiliar subsystems of source code. Understanding the logic of unfamiliar code is relatively straightforward. However, understanding its design and its genesis is often only possible through scattered and unreliable commit messages and project documentation -- when they exist. Thus, developers need a reliable and relevant baseline to understand the history of software projects. In this thesis, we take the first steps towards understanding change patterns in commit histories. We study the changes in software metrics through the evolution of projects. Through multiple exploratory studies, we conduct quantitative and qualitative experiments on several datasets extracted from a pool of 13 projects. We mine the changes in software metrics for each commit of the respective projects and manually build oracles to represent ground truth. We identified several categories by analyzing these changes. One pattern, in particular, dubbed "tradeoffs", where some metrics may improve at the expense of others, proved to be a promising indicator of design-related changes -- in some cases, also hinting at a conscious design intent from the authors of the changes. Demonstrating the findings of our exploratory studies, we build a general model to identify the application of a well-known set of design principles in new projects. Our overall results suggest that metric fluctuations have the potential to be relevant indicators for valuable macroscopic insights about the design evolution in a project's development history.

Partizipative Softwaregestaltung zielt darauf ab, sowohl die Softwarequalität als auch die Kontrolle der NutzerInnen über die Gestaltung ihrer Arbeitssituation und -umgebung zu erhöhen. In diesem Beitrag diskutieren wir anhand der Erfahrungen, die wir mit der (Weiter-) Entwicklung einer Groupware für ein virtuelles Netzwerk von FreiberuflerInnen gesammelt haben, inwiefern und warum sich Vorgehensweisen der partizipativen Softwaregestaltung zur nachhaltigen Entwicklung virtueller Gemeinschaften eignen. Die vorgestellte Fallstudie verdeutlicht, welch wichtige Rolle die Wahl der Vorgehensmethodik für die Entfaltung virtueller Gemeinschaften spielt, wenn es darum geht, das nötige Verständnis und die Kooperationsbereitschaft bei sich ständig ändernden Anforderungen - vor allem auch auf organisatorischer Ebene - zu entwickeln.

The article identifies the challenges during the system and specifically the software development process for safety critical electro-hydraulic control systems by using the example of the hydrostatic driveline with a four speed transmission of a feeder mixer. An optimized development approach for mobile machinery has to fulfill all the requirements according to the Machinery Directive 2006/42/EC, considering functional safety, documentation and testing requirements from the beginning and throughout the entire machine life cycle. The functionality of the drive line control could be verified in advance of the availability of a prototype by using a “software-in-the-loop” development approach, based on a MATLAB/SIMULINK model of the drive line in connection with the embedded software.

is study has focused on the technical sustainability dimension of sustainable soŸware engineering. Sustainabilitywithin soŸware engineering is something that has recently started to gain traction, where most of theresearch has focused on the environmental dimension.e purpose of this study was to investigate the technicalsustainability dimension, and contribute by continuing to build upon previous research which has suggestedsustainability as a part of non-functional requirements and as a part of soŸware quality.is study was conducted with a qualitative approach. is approach used interviews with people withexperience of working in soŸware development to collect data. e interviews were used to gain in-depthinformation of the dišerent aspects in soŸware development, e.g. development processes.e results, based on the interviews, showed that from a technical sustainability perspective there are issueswith where the focus of the work is in soŸware development and also problems related to how timemanagementis used.e results also showed that there was some lacking in understanding the benets and tradeošs ofdecisions made in the project, for example regarding the soŸware design, which can result in unnecessarycomplexity is acquired.e study found that the culture within soŸware development projects and companies needs to be changedtowards a culture which promotes the development of high quality soŸware. Because non-functional requirementsand soŸware quality are components of technical sustainability, therefore is the technical sustainabilityhigher if the quality is high. It was further found that this culture would be possible if changes were made tothe way prioritisations are made, and the way testing is performed should be extended. Finally it was foundthat the understanding of the benets and tradeošs of decisions and ideas needs to be increased and extendedcollectively.e study concluded that the technical sustainability dimension can be achieved through these changes andthat the problem and solution therefore are not small and local but rather a big and complex issue where thesolution spans several solutions that encompasses dišerent aspects and perspectives.

Fault detection is a key component to minimizing service unavailability. Fault detection is generally handled by a monitoring system. This project investigates the possibility of extending an existing monitoring system to alert based on anomalous patterns in time series.The project was broken up into two areas. The first area conducted an investigation whether it is possible to alert based on anomalous patterns in time series. A hypothesis was formed as follows; forecasting models cannot be used to detect anomalous patterns in time series. The investigation used case studies to disprove the hypothesis. Each case study used a forecasting model to measure the number of false, missed and correctly predicted alarms to determine if the hypothesis was disproved.The second area created a design for the extension. An initial design of the system was created. The design was implemented and evaluated to find improvements. The outcome was then used to create a general design.The results from the investigation disproved the hypothesis. The report also presents a general software design for an anomaly detection system. / Feldetektering är en nyckelkomponent för att minimera nedtid i mjukvarutjänster. Feldetektering hanteras vanligtvis av ett övervakningssystem. Detta projekt undersöker möjligheten att utöka ett befintligt övervakningssystem till att kunna skicka ut larm baserat på avvikande mönster i tidsserier.Projektet bröts upp i två områden. Det första området genomförde en undersökning om det är möjligt att skicka ut larm baserat på avvikande mönster i tidsserier. En hypotes bildades enligt följande; prognosmodeller kan inte användas för att upptäcka avvikande mönster i tidsserier. Undersökningen använde fallstudier till att motbevisa hypotesen. Varje fallstudie använde en prognosmodell för att mäta antalet falska, missade och korrekt förutsedda larm. Resultaten användes sedan för att avgöra om hypotesen var motbevisad.Det andra området innefattade skapadet av en mjukvarudesign för utökning av ett övervakningssystem. En initial mjukvarudesign av systemet skapades. Mjukvarudesignen implementerades sedan och utvärderades för att hitta förbättringar. Resultatet användes sedan för att skapa en generell design. Resultaten från undersökningen motbevisade hypotesen. Rapporten presenterar även en allmän mjukvarudesign för ettanomalitetsdetekteringssystem.