The work deals with the choice and implementation of an open source tool for managing a project portfolio management in the organization of o.s. Prostor. The first part of the work aims at theory description including examination of trends in project management tools and open source software. Project management and project portfolio management is increasingly important and increasingly used by companies and organizations in recent years. According to a new study made by Gartner, the use of open source software continues to grow and becomes competitive differently. The main aim of the work was to successfully implement one selected open source tool to the organization that I have found at an early stage. After finding the suitable company, I started to do the main part of my work i.e. the implementation of a selected open source tool for managing projects and its portfolio in this company. This phase started from the choice of the most suitable instrument, by means of analysis of the selected organization, o.s. Prostor, to the final design and implementation itself. I made analysis of the organization and on its basis I chose suitable criteria and their weights for the later selection of a suitable tool. I performed the choice based on multi-criteria analysis in order to maximum objectively select a suitable open source tool for implementation. None of the existing instruments fully met the requirements of the organization o.s. Prostor. Therefore, I assessed finally selected web2project tool in detail and made a proposal for additional programming of missing functionality. After completion of the missing functionality additional programming, I made a proposal of a web2project tool implementation procedure. I suggested four stages of the implementation procedure, which consists of the preparation for the installation environment, the way how to install the tool on the server, planning necessary capacity, and finally training including creation of a demonstration project. Finally, based on this proposal, I installed the tool web2project on the server and run testing and validation of the tool. When performing this work, I gained a lot of valuable experience in all relevant phases of the project cycle management from management to the implementation itself. The organization intends to fully operate the tool early next year, 2012, when they can begin to enter new projects.

Im Rahmen des sächsischen Projektes finc schaltet auch die Bibliothek der Hochschule für Musik und Theater „Felix Mendelssohn Bartholdy“ Leipzig ein Discovery-System auf Basis der open-source-Software „VuFind“ online. Der Artikel setzt sich mit den Überlegungen auseinander, wie auch für eine hoch spezialisierte Bibliothek die Vorteile von Discovery-Lösungen genutzt werden können. Vorgestellt werden zum einen Ideen zur Verbesserung des Suchkomforts sowie der Funktionserweiterung durch optimierte Metadatennutzung. Zum anderen werden erste Ergebnisse der Integration externer elektronischer Datenquellen präsentiert. Auch ohne kommerziellen aggregierten Index bietet der neue MT-Katalog eine deutliche Suchraumerweiterung mit passgenauen Inhalten.

Die Entwicklung moderner elektronischer Rechercheinstrumente findet seit vielen Jahren unter dem Schlagwort Discovery-Systeme statt. Dieser Begriff erweitert die Bedeutung des Katalogs über den traditionellen physischen Bestand der Bibliothek auf digitale Informationen und umfasst neben ergonomischen Suchfunktionen zugleich den zuverlässigen Zugang zu den digitalen Objekten.

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Community-based Open Source Software (OSS) projects are generally self-organized and dynamic, receiving contributions from volunteers spread across the globe. These communities survival, long-term success, and continuity demand a constant influx of newcomers. However, newcomers face many barriers when making their first contribution to an OSS project, leading in many cases to dropouts. Therefore, a major challenge for OSS projects is to provide ways to support newcomers during their first contribution. In this thesis, our goal was to identify and understand the barriers newcomers face and provide appropriate strategies to lower these barriers. Toward this end, we conducted multiple studies, using multiple research methods. To identify the barriers, we used data collected from: semi-structured interviews with 35 developers from 13 different projects; 24 answers to an open questionnaire conducted with OSS developers; feedback from 9 graduate and undergraduate students after they tried to join OSS projects; and 20 primary studies gathered via a systematic literature review. The data was analyzed using Grounded Theory procedures: namely, open and axial coding. Subsequently, the analysis resulted in a preliminary conceptual model composed of 58 barriers grouped into six categories: cultural differences, newcomers characteristics, reception issues, newcomers orientation, technical hurdles, and documentation problems. Based on the conceptual model, we developed FLOSScoach, a portal to support newcomers making their first OSS project contribution. To assess the portal, we conducted a study with undergraduate students, relying on qualitative data from diaries, self-efficacy questionnaires, and the Technology Acceptance Model. By applying the model to a practical application and assessing it, we could evaluate and improve the barriers model, changing it according to improvements identified during the conception of the tool, as well as suggestions received from the study participants. The FLOSScoach study results indicate that the portal played an important role guiding newcomers and lowering barriers related to the orientation and contribution process, whereas it was inefficient in lowering technical barriers. We also found that the portal is useful, easy to use, and increased newcomers confidence to contribute. The main contributions of this thesis are: (i) empirical identification and modeling of barriers faced by OSS project newcomers; and (ii) a portal providing information to support OSS project newcomers. / Projetos de software livre baseados em comunidade são, geralmente, auto-organizados e dinâmicos, e recebem contribuições de voluntários espalhados por todo o globo. A sobrevivência dessas comunidades, o sucesso a longo prazo, e sua continuidade exigem a entrada constante de novatos. No entanto, os novatos enfrentam muitas barreiras ao tentarem fazer a sua primeira contribuição para um projeto de software livre, o que leva, em muitos casos, a desistências. Portanto, um grande desafio para projetos de software livre é proporcionar maneiras de apoiar os novatos durante a realização de sua primeira contribuição. Nesta tese, nosso objetivo foi identificar e compreender as barreiras que os novatos enfrentam e fornecer estratégias adequadas para reduzir essas barreiras. Para isso, realizamos diversos estudos, utilizando vários métodos de pesquisa. Para identificar as barreiras, foram utilizados dados coletados a partir de: entrevistas semiestruturadas com 36 desenvolvedores de 14 projetos diferentes; 24 respostas a um questionário aberto realizado com desenvolvedores de software livre; feedback de 9 estudantes depois de tentarem contribuir para projetos de software livre; e 20 estudos obtidos por meio de uma revisão sistemática da literatura. Os dados foram analisados utilizando-se procedimentos da Grounded Theory: codificação aberta e axial. Posteriormente, a análise resultou em um modelo conceitual preliminar composto por 58 barreiras agrupadas em seis categorias: diferenças culturais, características dos novatos, problemas de recepção, orientação dos novatos, obstáculos técnicos, e problemas de documentação. Com base no modelo conceitual, desenvolvemos o FLOSScoach, um portal para apoiar os novatos no curso de sua primeira contribuição a projetos de software livre. Para avaliar o portal, realizamos um estudo com alunos de graduação, utilizando dados qualitativos de diários, questionários de autoeficácia (self-efficacy), e o modelo de aceitação tecnológica (TAM, do inglês Technology Acceptance Model). Ao aplicar o modelo em uma aplicação prática e experimentá-lo, pudemos avaliar e melhorar o modelo de barreiras, adequando-o de acordo com as melhorias identificadas durante a concepção da ferramenta, bem como sugestões recebidas dos participantes do estudo. Os resultados do estudo indicam que o portal FLOSScoach desempenhou um papel importante no direcionamento dos novatos e na redução das barreiras relacionadas com o processo de orientação e contribuição, enquanto não foi muito eficiente na redução de barreiras técnicas. Evidenciamos ainda que o portal é útil, fácil de usar, e aumentou a confiança dos novatos. As principais contribuições desta tese são: (i) identificação empírica e modelagem de barreiras enfrentadas pelos novatos em projetos de software livre; e (ii) um portal de informação para apoiar os novatos em projetos de software livre.

Des logiciels Open Source à Wikipédia, la production par les pairs mobilise des centaines de milliers de contributeurs de par le monde. C’est une source importante de création de valeur dans les secteurs très compétitifs de l’information et de la technologie, ainsi qu’une source majeure d’innovation. Au-delà même de son importance économique, l’émergence de la production par les pairs représente une opportunité d’éclairer un certain nombre de questions anciennes et particulièrement ardues dans la littérature d’un jour nouveau. Compte-tenu de la nature souvent non conventionnelle des incitations au travail dans les environnements de production par les pairs, ceux-ci sont particulièrement adaptés à l’étude de l’impact des préférences économiques non standard sur la production de biens publics, à l’analyse de leur rôle en tant que motivations au travail, ainsi qu’à l’évaluation de leurs conséquences en termes d’économie organisationnelle.Ce travail de thèse s'appuie sur un outil d’expérimentation en ligne original (développé et évalué dans le chapitre 1) pour combiner expériences en ligne à large échelle et méthodes computationnelles (i.e. l’extraction systématique de données sur le comportement de terrain des sujets) afin de (i) mener le tout premier test de terrain exhaustif de la théorie de la production privée de biens publics, (ii) étudier l’importance des préférences sociales en tant que motivations au travail au sein d’organisations productives réelles et (iii) procéder aux premiers tests de terrain documentant des comportements endogènes d’appariement des agents économiques au sein d’équipes productives en fonction de leur type coopératif. / From Open Source Software to Wikipedia, peer production involves hundreds of thousands of contributors worldwide. It is an important source of value creation in the most competitive sectors of information and technology, as well as a major source of innovation. Beyond its economic significance, the emergence of peer production also represents an opportunity to shed new lights on a number of longstanding but notably difficult questions in the literature. Given the unconventional nature of many of the work incentives at play in peer production environments, those are particularly well suited for researching the impact of non standard economic preferences on public goods provision, studying their role as work incentives, and assessing their consequences in terms of organizational economics.This Ph.D. work leverages a novel online experimentation tool (developed and assessed in Chapter 1) to combine large-scale online experiments and computational methods (i.e. the systematic extraction of data on subjects’ field behavior) to respectively (i) provide the first comprehensive field test of the theory of the private provision of public goods, (ii) study the importance of social preferences as work motives within real-world productive organizations and(iii) report the first field evidence of endogenous sorting behavior of economic agents within productive teams based on their cooperative types.

Software Livre é software fornecido com código fonte, e que pode ser livremente usado, modificado e redistribuído. Projetos de Software Livre são organizações virtuais formadas por indivíduos que trabalham juntos no desenvolvimento de um software livre específico. Estes indivíduos trabalham geograficamente dispersos, utilizando ferramentas simples para coordenar e comunicar seu trabalho através da Internet. Este trabalho analisa esses projetos do ponto de vista de seu processo de software; em outras palavras, analisa as atividades que realizam para produzir, gerenciar e garantir a qualidade do seu software. Na parte inicial do trabalho é feita uma extensa revisão bibliográfica, comentando os principais trabalhos na área, e são detalhadas as características principais dos projetos de software livre. O conteúdo principal deste trabalho resulta de dois anos de participação ativa na comunidade, e de um levantamento realizado através de questionário, detalhando mais de quinhentos projetos diferentes. São apresentadas treze hipóteses experimentais, e os resultados do questionário são discutidos no contexto destas hipóteses. Dos projetos avaliados nesse levantamento, algumas características comuns foram avaliadas. As equipes da grande maioria dos projetos são pequenas, tendo menos de cinco participantes. Além disso, existe uma distribuição equilibrada entre algumas formas de organização descritas na literatura, incluindo o \'ditador benevolente\' de Eric S. Raymond e o \'comité\' exemplificado pelo projeto Apache. Dentre um conjunto de domínios de aplicação determinados, os projetos de software livre se concentram nas áreas de engenharia e desenvolvimento de software, redes e segurança, e aplicações multimídia. Com relação às atividades do processo de software, pode-se dizer que a maioria dos projetos tem requisitos fundamentalmente definidos pelos seus autores, e que a base de usuários de grande parte dos softwares é composta dos seus desenvolvedores e da comunidade de software livre. Uma parcela significativa dos projetos baseia-se em outros softwares pré-existentes, e em padrões publicados previamente. Pouca ênfase é dada à usabilidade, assim como às atividades de garantia de qualidade convencionais. Surpreendentemente, também recebem pouca atenção as atividades de revisão de código e teste sistemático. Entre as ferramentas que os projetos utilizam, se destacam as listas de discussão e os sistemas de controle de versão. Foi estabelecida uma correlação entre a dimensão da equipe do projeto e as atividades de engenharia de software que realiza, mas não se confirmou um vínculo entre estas atividades e a idade do projeto. Foram também estabelecidas relações entre o número de linhas de código do software do projeto e a sua idade, tamanho e domínio de aplicação. Estes resultados são exibidos neste trabalho, e estarão publicamente disponíveis no site Web do projeto. O trabalho conclui descrevendo partes essenciais do processo de software em projetos de software livre, e oferecendo sugestões para trabalhos posteriores. / Free Software (or Open Source) is software provided with source code that may be freely used, modified and redistributed. Free Software Projects are virtual communities of developers that work on a specific free software product. These developers work geographically dispersed, using simple tools to communicate and coordinate their actions over the Internet. This work analyzes these projects with respect to their software process; in other words, the activities they do to produce, manage and ensure the quality of their software. In the initial sections, I perform a large review of related work in this field, and provide an overview of the main characteristics of free software projects. The main contents of this dissertation is based on two years of participation in free software projects, and on a survey based on a questionnaire that describes over five hundred different free software projects. 1 present thirteen initial hypothesis, using them as a framework to analyze the results of the survey. Among the projects evaluated in this survey, some common aspeets were observed. For instance, most projects have a small team, with less than five developers. I also found a balanced distribution of leadership systems described in other works, including Eric Raymond\'s \'benevolent dictator\' and the committee exemplified by the Apache project. The domains in which these projects tend to concentrate are software engineering and development, networks and security, and multimédia applications. Concerning the software process activities, most projects have their functional requirements established by their authors: the user base for most of the projects includes the development team and the free software community. A large proportion of the projects surveyed are based on pre-existing software, or on previously published standards. Little emphasis is placed on usability and conventional fornis of quality assurance. Remarkably, this lack of emphasis on conventional process includes activities like review and testing. Among the tools used by the projects, mailing lists and versioning systems such as CVS come out ahead by a strong margin. A correlation was identified between the size of the project\'s team and the software engineering activities that it realizes, but I could not establish a link between the age of the project and these activities. Other correlations were established between the size of the project\'s codebase (in terms of lines of code) and its age, size and application domain. The dissertation concludes describing essential parts of the software process in free software projects, and offering suggestions for future work.

The thesis contains basic information about image documents digitalization. A brief list of common used standards in Czech republic is shown. The standards can be used in description of digitalized documents by institutions such as libraries, scientific departments and universities. The thesis specifically solves the dilemma of the preservation and the accessing of B.P.Molls large map collection stored in Moravian Library in Brno city. It analyses step by step the characteristics of the saved documents, style of their interlacing and data representation. In terms of deposition and manipulation it comes with description list of open-source digital libraries and it chooses the Fedora repository. It solves methods of object-model implementation while using this digital library. The functional parts are web presentation of the mentioned map collection and an effectiveness test showing large-scale maps using the flash Zoomify browser. Web presentation uses the repository services as often as possible, and thus allows searching and searching through the bibliographic records of the presented documents. The end of the thesis sums up the obtained results and presents the incoming development course of presentation and popularization of the map collection.

Die Chemnitzer Linux-Tage sind eine Veranstaltung rund um das Thema Open Source. Im Jahr 2012 wurden 104 Vorträge und Workshops gehalten. Der Band enthält ausführliche Beiträge zu 14 Hauptvorträgen sowie Zusammenfassungen zu 90 weiteren Vorträgen. / The "Chemnitz Linux Days" is a conference that deals with Linux and Open Source Software. In 2012 104 talks and workshops were given. This volume contains papers of 14 main lectures and 90 abstracts.

Die Entwicklung moderner elektronischer Rechercheinstrumente findet seit vielen Jahren unter dem Schlagwort Discovery-Systeme statt. Dieser Begriff erweitert die Bedeutung des Katalogs über den traditionellen physischen Bestand der Bibliothek auf digitale Informationen und umfasst neben ergonomischen Suchfunktionen zugleich den zuverlässigen Zugang zu den digitalen Objekten.