Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2016-06-29T12:16:01Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação - vbc.pdf: 3425848 bytes, checksum: 8e244d83612f4d849475c13a6af455d4 (MD5) / Made available in DSpace on 2016-06-29T12:16:01Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação - vbc.pdf: 3425848 bytes, checksum: 8e244d83612f4d849475c13a6af455d4 (MD5) Previous issue date: 2014-09-01 / A aplicação de Análise de Redes Sociais (SNA – Social Network Analysis) em times de projetos de software tem sido um tópico de pesquisa bastante explorado e usado na última década. A fim de entender as relações entre pessoas, grupos, organizações ou outros tipos de entidades sociais, por meio de grafos e métricas próprias, SNA aparece como uma alternativa para expandir a visão da dinâmica de projetos no campo das relações sociais. Visualizando um projeto representado por um grafo, as entidades sociais são representadas como nós e suas relações como arestas, e análises temporais e/ou atemporais sobre aspectos de projetos, como comunicação, formação de equipe, colaboração, entre outros, podem ser realizadas usando métricas próprias como por exemplo betweenness centrality e densidade. O tipo de projeto mais estudado por pesquisadores que usam Análise de Redes Sociais é o projeto de desenvolvimento de software open source (OSS – Open Source Software). Pela facilidade na obtenção dos dados, armazenados em repositórios online, esta categoria de projeto tem levantado a curiosidade da comunidade acadêmica a fim de investigar suas características. OSS se distingue dos projetos tradicionais (chamados de closed source) pois envolve a participação de vários integrantes de forma espontânea, geralmente de localidade distintas e que nunca tiveram um contato pessoal entre si. Tendo em vista a extensão, em quantidade, de pesquisas que combinam o uso de técnicas de SNA em projetos OSS, esta dissertação tem como objetivo, através de um mapeamento sistemático da literatura, mapear e categorizar estudos diretamente relacionados à análise de redes sociais em projetos de software open source. Por meio de estatística descritiva e análise qualitativa busca-se conhecer quais os principais benefícios e limitações encontrados na aplicação das métricas de análise de redes sociais nos projetos de software OSS, bem como os principais tópicos de pesquisa e fontes de dados utilizadas. O trabalho, em sua síntese, apresenta um diagnóstico da pesquisa atual sobre os temas abordados e colabora com a academia apontando tendências e trabalhos futuros. / The application of Social Network Analysis (SNA) in teams of software projects has been a well researched and used topic in the last decade. In order to understand the relation between people, groups, organizations and other social entities, by the use of its own graphs and metrics, SNA appears to be an alternative to expand the vision of the projects dynamics in the social relation field. Seeing a project represented in a graph, the social entities are represented as dots and its relations as edges, and the temporal and/or timeless analysis about the projects aspects, such as communication, team building, coworking and others, can be performed by the use of own metrics, e.g. betweenness centrality and density. The kind of project most studied by researchers that use Social Network Analysis is the open source (OSS – Open Source Software) software development. This project category has been raising the academic community curiosity to investigate its characteristics since it is easy to obtain the data, stored in online repositories. OSS distinguishes from traditional projects (called closed source) because involves the participation of many spontaneous member, usually from different location and that have never met. As there are many researches that combine the use of SNA techniques in OSS projects, this thesis has the purpose to map and categorize, through a systematic mapping of the literature, studies directly related to the analysis of social network in open source software projects. Using descriptive statistics and qualitative analysis, seeks the main benefits and limitations found on the application of social network analysis metrics in the OSS software projects, as well as the main research topics and the used data source. To sum up, this dissertation presents a diagnose of the research about the covered topics and collaborates with the academy pointing tendencies and future work.

Made available in DSpace on 2015-04-11T14:02:42Z (GMT). No. of bitstreams: 1 rallyson.pdf: 1971079 bytes, checksum: 1c3dd02a9f806a7c16eecd3d4f5e5863 (MD5) Previous issue date: 2013-07-05 / Constraints on Internet access, resulting from intermittent and low quality connections, have become the main obstacle to the use of Virtual Environments for Teaching and Learning in locations outside large cities, especially in challenging geographical regions like the Amazon. In this context, we present a scheme to get around these limitations, based on use of local servers and a synchronization technique that enables mediation of access to central servers, keeping local resources even when Internet connection is interrupted, performing updates when the connection is reestablished again. The proposed scheme has been developed and tested in order to evaluate its behavior in different scenarios, as well as the corresponding user perception. / Limitações do acesso à Internet, decorrentes de conexões intermitentes e de baixa qualidade, tem se tornado o principal obstáculo para o uso de Ambientes Virtuais de Ensino e Aprendizagem em localidades fora das capitais e grandes cidades, especialmente em regiões geograficamente desafiadoras como é o caso da Amazônia. Nesse contexto, é apresentado um esquema para contornar tais limitações, baseado no uso de servidores locais e de uma técnica de sincronismo que possibilita a intermediação do acesso a servidores centrais, mantendo recursos locais ainda que a conexão a Internet seja interrompida, realizando as atualizações quando tal conexão for restabelecida. O esquema proposto foi desenvolvido e testado de modo a avaliar seu comportamento em diferentes cenários, bem como a correspondente percepção do usuário.

O objetivo deste trabalho é estudar o processo de adoção do Software Livre na Universidade de São Paulo. É de especial interesse o estudo dos aspectos culturais e organizacionais que contribuíram para a adoção do Software Livre entre os administradores de sistemas. O estudo de adoção, não se limitou à adoção individual, mas se estendeu à adoção organizacional uma vez que a adoção de inovações tecnológicas em organizações difere de modo especial da adoção individual. A adoção organizacional aborda aspectos como a extensão do uso da inovação e, o quão profundamente o uso da tecnologia altera processos, estruturas e cultura organizacional. O fenômeno de adoção na Universidade revela-se particularmente importante por ter se tratado da adoção de uma nova tecnologia, em grande escala e bem-sucedida. Esta pesquisa estuda quais são os fatores condicionantes e os que favoreceram a adoção da nova tecnologia, bem como o contexto social e cultural desta adoção em diferentes Unidades da USP. / The objective of this work is to study the adoption of Free Software in the University of São Paulo. It is of special interest the study of the cultural and organizational aspects that contributed to the adoption of the Free Software among the systems administrators. The adoption study, was not limited to the individual adoption, but it extended to the organizational adoption once the adoption of technological innovations in organizations differs in special ways from the individual adoption. The organizational adoption examines aspects as the extension of the use of the innovation and, how deeply the use of the technology affects processes, structures and organizational culture. The adoption phenomenon in the University is particularly important for having it been a voluntary adoption of a new technology, in great scale and well succeeded. This research studies which factors restricted or favored the adoption of the new technology, as well as the social and cultural context of this adoption in different Units of USP

Context： Software evolution comes with the increasing growth of software applications both in size and complexity. Unlike the software maintenance, software evolution addresses more on the adaption of the new fast-changing requirements. Then the term of “software evolvability” comes with its importance for evaluating the evolution status of the software. However, it is not clearly identified especially in the context of open source software (OSS). Besides the most studies are about the description of software evolvability as a quality attribute, and very few research have done on the measurement of software evolvability during the software evolution process. Objectives： In this study we perform an in-depth investigation on identification of the OSS evolvability, and figure out the appropriate metrics used for measuring the OSS evolvability. Based on that we finally proposed the open source software evolvability measurement framework (OSEM) which could be used for measuring the software evolvability generally in an OSS context. Methods： At first, we conducted a literature review by combining backward snowballing search with systematic database search. Two research questions which are RQ1 and RQ2 are proposed for helping us to retrieve the key information for building the needed framework. Then we performed a case study on VLC media player (an OSS project) to validate the processes of the proposed framework. Results： Based on literature we could explicitly identify the OSS evolvability, and figure out the differences of software evolvability addressed in OSS context and non OSS context (e.g, the traceability refers to documentation in non OSS context, however in OSS context it refers to the release version of OSS project). Besides we also fulfill the evolvability measuring method by addressing the process of prioritization of evolvability sub-characteristics. In the end we implement the OSEM framework on VLC media player and get the well documented results which are clearly presented and easy to understand. Such results could be taken by the VLC developers as an input for the design and development of the VLC. Conclusions: We conclude that the open source software measurement framework (OSEM) is applicable, based on the time we spent on the case of VLC media player it is quite fast and efficient to use such framework. The results from the conduction of this framework are documented well and very clear for OSS users/developers to follow.

Introduction: Open Source ERP is considered as a viable alternative of proprietary ERP paradigm. Open Source ERP is getting more and more acceptance among Small and Medium Sized Enterprises (SMEs) recently. Majority of Proprietary ERP vendors are changing their strategy nowadays and extend their focus on SMEs, even though SMEs are not that interested in Proprietary ERP systems. The factors that may motivate SMEs to select an Open Source ERP over proprietary ERP are not identified empirically in previous researches. Few researches raised the issue of cost and thus proposed that Open Source ERP is appropriate for SMEs. The other factors than cost involved in the selection process are yet to investigate empirically. Purpose: The overall purpose of this thesis work is to contribute in knowledge domain of Open Source ERP. Open Source ERP is an emergent area but it has the potential to attract many organizations to implement this kind of ERP Systems. The issue under investigation throughout this research will be the selection process of Open Source ERP in Small and Medium Sized Enterprises (SMEs). The focus will be to identify mutually most important factors, from the perspective of SMEs and Suppliers that may motivate the Small and Medium Sized Enterprises (SMEs) to select OS ERP. Method: Data obtained from the respondents is quantified in the research. Information gathered from the SMEs who have implemented Open Source ERP and from the Suppliers through web based survey. Two separate questionnaires comprised of various questions related to different factors in selecting of Open Source ERP solutions were made and sent to both SMEs and Suppliers of Open Source ERP. Opinion from an Open Source ERP expert is obtained regarding different factors motivate SMEs to select Open Source ERP. The results obtained from respondents through empirical findings were analyzed thereafter. Conclusions: SMEs were investigated regarding the importance of various rationales when they were selecting Open Source ERP solutions. The degree of importance of various factors in selection process might be diverse from organization to organization. It might be dependent on the size, geographical location of the organization or many other issues. Despite all this, there might be some common factors that may be always considered as foremost factors which influence SMEs to select an Open Source ERP over proprietary ERP.

Precision farming and livestock are topics of spatial nature, so commonly use the Geographic Information Systems (GIS) because they present themselves like excellent management tools. GIS allow management spatial data and its interconnection with alphanumeric attributes, performing complex analysis and the possibility to simulate various scenarios in order to provide an effective decision-making. Recent developments in internet technologies have contributed to access, publication, distribution and exploitation of geographic information. The use of the internet distributed GIS (WebGIS) using free software, can be a proper solution since GIS places accessible to user functionalities, through a simple browser, without the need for large investments in relation to software or even in specialized technical training . Therefore, this Master s Dissertation developed a WebGIS using free software that provides geographic and alphanumeric information layers that are under the responsibility of Embrapa South Livestock, allowing registered users to view and conducting research and spatial analysis operations. / A agricultura e a pecuária de precisão são temas de natureza espacial, por isso utilizam comumente os Sistemas de Informação Geográfica (SIG) pois estes apresentam-se como excelentes ferramentas de gestão. Os SIG permitem o gerenciamento de dados espaciais e sua interligação com atributos alfanuméricos, a realização de análises complexas e a possibilidade de simular diversos cenários de modo a propiciar uma tomada de decisão eficaz. Os recentes desenvolvimentos em tecnologias da internet têm contribuído para o acesso, publicação, exploração e distribuição da Informação Geográfica. A utilização de SIG distribuídos na internet (WebGIS), utilizando softwares livre, pode ser uma solução adequada visto que coloca funcionalidades de SIG ao alcance de usuários, através de um simples browser, sem necessidade de grandes investimentos em relação a softwares ou mesmo em formação técnica especializada. Assim, na presente dissertação, desenvolveu-se um WebGIS, utilizando softwares livres, que disponibiliza informações geográficas e alfanuméricas de camadas que estão sob a responsabilidade da Embrapa Pecuária Sul, permitindo aos usuários cadastrados a visualização e a realização de pesquisas e operações de análise espacial.

This diploma thesis deals with implementation of open source Business Intelligence solution Pentaho Community Edition 5.0 (Pentaho CE) in particular healthcare institution and it tries to prove its usability in full operation. In theoretic part there are defined concept and principles of Business Intelligence and specifics BI solution implementation in healthcare. In practical part there are detailed analysis of Pentaho CE and demonstration of usage in healthcare presented by implementation into specific healthcare institution. The main benefit of this thesis is description of implementation Pentaho CE using author's practical experience in healthcare area and advanced knowledge of Pentaho CE. The main goal, the verification of usability in production, is fulfilled in both theoretical and practical parts of this diploma thesis. There are also calculated costs and approximate suggested schedule of main activities. Functionality of Pentaho CE is attested in detailed analysis which is possible to use as guide on its own describing general architecture of Business Intelligence solution Pentaho CE.

Esta dissertação tem por objetivo apresentar as licenças de software livre mais importantes, sob a luz dos seus principais aspectos jurídicos e da inter-compatibilidade, de forma a auxiliar pessoas envolvidas no desenvolvimento de software a compreender as implicações destas licenças ao fazer uso delas em seus projetos. A dissertação contextualiza as licenças, tanto no tocante à legislação brasileira, quanto no que diz respeito às restrições de licenciamento, de forma a viabilizar a análise de compatibilidade que se segue. Casos de projetos proeminentes de software livre cujo desenvolvimento foi afetado pelas implicações mencionadas ilustram a investigação, que é complementada por uma análise de ferramentas e metodologias existentes que auxiliam na gestão dos aspectos de licenciamento. / The purpose of this Master thesis is to present the most common free software licenses, regarding their main legal and inter-compatibility aspects, to help people involved in software development understand the implications of these licenses when using them in their projects. It contextualizes the licenses, both in terms of the Brazilian legislation, and regarding licensing restrictions, to make the subsequent compatibility analysis possible. Cases of free and open source software in which development was affected by the mentioned implications illustrate the research, and it is complemented by an analysis of existing tools and methodologies that assist in the management of licensing issues.

This exploratory research examined an information policy formation process for the adoption of open source software (OSS) in Uganda. Grounded in a pragmatist tradition, this theoretical and empirical study pursued a qualitative research approach with a triangulation of theoretical concepts, data collection, and analysis techniques in an iterative and interactive process. The design provided a powerful context to develop and conduct field activities in Kampala with a purposeful sample of 22 participants, 20 in interviews and 5 in a focus group discussion. The research design enhanced consistency in the evidence from the data, increased robustness in the results, and confidence in the findings. The results highlighted a vibrant ICT sector in Uganda, underlined the multiple stakeholders and their competing interests in the policy, revealed a lack of consensus between the government and OSS promoters on the meaning of OSS, and illuminated the benefits in the OSS model over proprietary software. The stakeholders' conflicting perceptions appear to be too far apart to allow meaningful progress and are derailing the policy. Unless their conflicting perceptions are resolved, the OSS policy will continue stagnating. The study fills critical information gaps in Uganda’s policy formation processes, provides timely and relevant information to holistically understand a complex policy formation stage to enable stakeholders to resolve their impasse and enact a law to embrace OSS. It breaks ground in information policy research in framing policy formation processes for new ICTs, such as OSS, as ideologically-oriented. The findings offer ideas to scholars and African countries to draw applicable lessons.

South Africa has shown an increased interest and awareness of Open Source Software (OSS) in the past decade. One of the reasons for this was the support from the Shuttleworth Foundation for Open Source initiatives. Migrating to OSS is a difficult and time consuming activity that should not be underestimated by the migration team. Careful planning and roll-out procedures should be in place before one commence on this journey. Process reference models are used in different fields to capture the generic process flow of activities. For the OSS domain, no process reference models could be found for migration purposes. Therefore, this study has as aim the suggestion of an initial set of process reference models for an organisational OSS migration. These process reference models were identified by capturing the process models for a case study that entailed the migration of the CSIR software systems and desktops from proprietary to OSS. From this set of process models, the migration processes were identified and refined to a set of suggested process reference models for organisational OSS migrations. This set of process reference models are useful to determine the processes necessary for organisations considering migrating to OSS. The study is divided into four research questions, where the first focusses on use and value of process reference models and the second on what is already known about OSS migration processes. The third deals with key processes within an organisational open source migration (OOSM) and the last with process reference models for an OOSM. For the first research question, the use and value of process reference models and the usefulness of utilising process reference models is discussed as well as using process models as a modelling tool to identify and capture processes. For the second research question, a summary is provided of what we know about OSS migration processes and a description about what the researcher and others have learnt about OSS, OSS migrations, process reference models, the process and its structure. For the third research question, the key processes within an OOSM is discussed as well as all the processes that took place during the OSS migration project from basic administrative processes to complex processes, from the beginning of the project until its completion. Lastly, for the fourth research question, process reference models that are essential for an OOSM and possible generic migration process models bound to reoccur are identified by the researcher and validated using a focus group discussion. / M.Tech. (Information Technology)