I denna uppsats studeras Steams forum där fyra olika spel-communities jämförs med varandra. Det som skiljer dessa spel från varandra är att två av dem är open source och de två andra är inte det. Open source innebär att det går att modifiera spelet utifrån egna preferenser med tillåtelse från spelutvecklaren. Syftet med denna uppsatsen är att mäta engagemang på steams forum genom att analysera forumtrådar. Med hjälp av en kvantitativ innehållsanalys så kan vi ställa spelen mot varandra och jämföra data. De samtliga spelen som analyseras är populära och har en aktiv spelarbas (Steam, 2017), men engagemanget på forumen skiljer sig och kan open source vara en påverkande faktor? Studien tar förutom teorin om open source upp teorier som engagemang, online community, modding och user generated content. Dessa teorier tas upp i studien för att förklara vad som engagerar användare på online forum och om open source är en bidragande faktor till ett större engagemang på steams forum. Analysdelen i studien går till på så vis att man med hjälp av en kvantitativ innehållsanalys analyserar Steams forum utifrån variabler som bestäms innan analysen utförs. Undersökningen resulterade i att det gick att se att spel som är open source har en mer engagerad community på Steams forum. Detta diskuteras vidare i analys- och diskussionsdelen utifrån den tidigare forskning och teori som presenteras teoretiska ramverket. Förutom engagemang så diskuteras även modding betydelse för användarna och exploatering utifrån ett företagsperspektiv. / In this paper, the focus will be on Steam’s forum where four games will be compared to each other. The main difference between the games is that, two of the game is open source and the two other are not. Open source means that it’s possible to modify the game from a person's own preferences with permission from the gaming company to do so. The purpose of this paper is to measure the engagement on Steam's forum by analyzing forum threads. With the help of a quantitative content analysis, the games can be compared to each other and the data as well. The games that are being studied, does all have active players (Steam, 2017), but the engagement is not the same in all gaming-communities. Can open source possibly be an influential factor to how much people engage in different forums? Besides the theory of open source, this paper includes theories about engagement, online community, modding and user generated content. These theories is included in order to explain what possibly can affect users to be more engaged in different communities, and if open source is an influential factor to greater engagement in gaming-communities. The analysis is conducted with the help of a quantitative content analysis that’s based on variables regarding Steam’s forum. The result of the analysis indicated that Steam gaming-communities based around open source games, does have more engaged users. The results are later on discussed in the analysis part, with the help of different theories and research on the subject. Aside from engagement we also discuss the meaning of modding from a user and company perspective.

This master's thesis focuses on the issues of selecting the Business Intelligence tools distributed under open source licenses. The main objective of this work is to compare the different instruments in all layers of the Business Intelligence architecture. The first part is focused on the definition of key concepts of the main topic. Provides necessary theoretical basis for understanding the context used in the practical part, which is dedicated to comparison tools realized according to the established methodology. These tools are selected and compared with predetermined criteria. Then each tool is introduced and verbally and numerically compared with others. At the conclusion of each comparison group of instruments referred to their final assessment and recommendations. This work is intended to provide the information base needed to select the proper tools to create a complete BI solution.

Smart City technologies emerge as a potential solution to tackle common problems in large urban centers by using city resources efficiently and providing quality services for citizens. Despite the various advances in middleware technologies to support future smart cities, there are yet no widely accepted platforms. Most of the existing solutions do not provide the required flexibility to be shared across cities. Moreover, the extensive use and development of non-open-source software leads to interoperability issues and limits the collaboration among R&D groups. Our research explores the use of a microservices architecture to address key practical challenges in smart city platforms. More specifically, we are concerned with the impact of microservices on addressing the key non-functional requirements to enable the development of smart cities such as supporting different scalability demands and providing a flexible architecture which can easily evolve over time. To this end, we are developing InterSCity, a microservice-based open source smart city platform that aims at supporting the development of sophisticated, cross- domain applications and services. Our early experience shows that microservices can be properly used as building blocks to achieve a loosely coupled, flexible architecture. Experimental results point towards the applicability of our approach in the context of smart cities since the platform can support multiple scalability demands. We expect to enable collaborative, novel smart city research, development, and deployment initiatives through the InterSCity platform. The full validation of the platform will be conducted using different smart city scenarios and workloads. Future work comprises the ongoing design and development effort on data processing services as well as more comprehensive evaluation of the proposed platform through scalability experiments. / As tecnologias de Cidades Inteligentes surgem como uma potencial solução para lidar com problemas comuns em grandes centros urbanos, utilizando os recursos da cidade de maneira eficiente e fornecendo serviços de qualidade para os cidadãos. Apesar dos vários avanços nas tecnologias de middleware para suporte às cidades inteligentes do futuro, ainda não existem plataformas amplamente aceitas. A maioria das soluções existentes não oferece a flexibilidade necessária para ser compartilhada entre as cidades. Além disso, o vasto uso e desenvolvimento de software proprietário levam a problemas de interoperabilidade e limitam a colaboração entre grupos de P&D. Nesta dissertação, exploramos uso de uma arquitetura de microsserviços para abordar os principais desafios práticos em plataformas de cidades inteligentes. Mais especificamente, estamos preocupados com o impacto dos microsserviços sobre requisitos não-funcionais para permitir o desenvolvimento de cidades inteligentes, tais como o suporte a diferentes demandas de escalabilidade e o fornecimento de uma arquitetura flexível que pode evoluir facilmente. Para esse fim, criamos a InterSCity, uma plataforma para cidades inteligentes de código aberto baseada em microsserviços que visa apoiar o desenvolvimento de aplicativos e serviços sofisticados em múltiplos domínios. Nossa experiência inicial mostra que os microsserviços podem ser usados adequadamente como blocos de construção para obter uma arquitetura flexível e fracamente acoplada. Resultados experimentais apontam para a aplicabilidade de nossa abordagem no contexto de cidades inteligentes, já que a plataforma pode suportar diferentes demandas de escalabilidade. Esperamos permitir pesquisas colaborativas e inovadoras em cidades inteligentes, assim como o desenvolvimento e iniciativas de implantações reais através da plataforma InterSCity. A validação completa da plataforma será realizada usando diferentes cenários de cidades inteligentes e cargas de trabalho. Os trabalhos futuros compreendem o esforço contínuo de projetar e desenvolver novos serviços de processamento de dados, bem como a realização de avaliações mais abrangentes da plataforma proposta por meio de experimentos de escalabilidade.

Discogs  is  a crowdsourced  online  discography  that  has  become  one  the  largest music databases   and   marketplace   used   by   collectors   and   enthusiasts. To   learn   about   what motivates Discogs community users to contribute, the answers provided by the respondents(n=135)   to an   online   survey with   Likert-scaled   items   measuring different types   of motivations  and  some  open-ended  questions were analysed.  The  results  suggested that Discogs contributors are primarily driven by altruistic reasons (intrinsic motivation) followed by  pragmatism  (extrinsic  motivation).   While  sellers  contributed to  the  database mostly  to sell in the Marketplace, they were equally motivated by intrinsic factors, with similar rates to respondents who  did  not  have  economic  interests  in  the  website. Open-ended  questions indicated  that  conflicts  with  other  users  could  decrease  the  motivation  to  contribute.  In addition,   respondents   revealed   that during   their   trajectory   ascontributors,   intrinsic motivation increased over time. Also, experience and expertise were the reasons why some contributors had roles recognised by other members in the Discogs community

Digital technologies are developing in a rapid pace and the usage of 3D is now in its experimenting phase. Many projects have been working with 3D to see how it can be used in a productive way. The use of 3D and GIS together has started to set a pattern to what 3D models are good for more than documentation in high accuracy. This essay is discussing what this relationship is being used for and if it should be place as a standard procedure in archaeological field practice. The essay is also discussing the place for 3D and digital archeology in the two biggest paradigms in archaeology. The result of this essay is showing a potentially effectiveness of the usage of 3D in excavation purposes and that 3D-GIS can make even more potential data of the models, both in field and in post-processing work. The discussion of the place for 3D models in archaeological theory is showing that digital archeology can fill the gap between processual and post-processual archaeology, therefor are a part of all paradigms or even be a part of a new paradigm, which can create a new way of interpret archaeology.

This work deals with security compliance of computer systems, namely operating systems, applications and system services. Concept of security policies, their evaluation and their enforcement is described. Security compliance automation and the SCAP standard are presented. OpenSCAP project, which is used as an SCAP scanner, is described together with its tools and its usage. An idea to add support of Microsoft Windows within OpenSCAP, which was previously unsupported, is presented. The core part of the thesis is to identify necessary changes of OpenSCAP and to design an extension of this project. All these modifications are implemented. The solution is demonstrated on security policies for Windows. The solution is evaluated and further improvements are discussed.

The master’s thesis focuses on analysis of solution to distributed computing of metage-nomics data in cloud infrastructures. It describes specific META-pipe platform based onclient-server architecture in infrastructure of public academic cloud EGI Federated Cloud,sponsored by european project ELIXIR-EXCELERATE. Thesis is focusing especially onopen-source software like Terraform and Ansible.

In the field of human-computer interaction, the majority of domestic IoT and smart devices run on proprietary software that possess limited technical properties and predetermined functionalities. As practices of building, modifying, and making IoT applications grow, this thesis follows an open-source approach to IoT to investigate the relationships of humans and things in a domestic setting. As a result of this material exploration, proprietary frameworks for interactions with smart devices are challenged through speculative scenarios, that include diverse instances of human-things interactions. Thus, a research through design methodology is suggested to support series of experiments, conducted to explore instances of perceived intelligence of these open-source hardware, without the use of advanced computational systems as proprietary devices entail. The suggested process is the creation of a speculative design artifact that combines hacking practices, to support designers in generating insights and to further iterate on possible open-source IoT interactions.

This master thesis is focused on analysis and creation of GSM network, using open-source projects. For such creation is used software defined radio – in this thesis kit USRP1 which uses OpenBTS with GNURadio. As a switchboard is used PBX Asterisk and for testing GSM network was used OsmocomBB (on Motorola C123) and Airprobe (on Nokia 3310) projects. Installation and implementation are part of this thesis. In thesis have been also created two scripts for simplify of the work with projects and one laboratory task.

The aim of this thesis is to install and to configure three Open source PBXes Asterisk, Freeswitch and YATE. Furthermore, the aim is to realize the performance test and stability tests on three different HW configurations with the tester Spirent Abacus 5000. The scripts in bash were created to monitor PBX performance. Another part of the study is to analyze and to compare PBX security and to compare the Open Source PBX with a proprietary PBX Alcatel-Lucent OXE.