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Dissertations / Theses on the topic 'Open source software (FLOSS)'

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Published: 10 December 2022
Last updated: 28 January 2023

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1

Srinivasan, Sumitra. "An Open Source Technoscape in India: Motivations, Manifestations, and Speculations." restricted, 2006. http://etd.gsu.edu/theses/available/etd-08172006-171614/.

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Thesis (Ph. D.)--Georgia State University, 2006.
Ted Friedman, committee chair; Kathy Fuller-Seeley, Ashok Jhunjhunwala, Merrill Morris, Leonard Teel, committee members. Title from title screen. Electronic text (236 p. : col. ill.) : digital, PDF file. Description based on contents viewed May 22, 2007. Includes bibliographical references (p. 189-210).
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2

Hadziselimovic, Adnan. "FLOSSTV (Free, Libre, Open Source Software (FLOSS)) within participatory 'TV hacking' media and arts practices." Thesis, Goldsmiths College (University of London), 2012. http://research.gold.ac.uk/6922/.

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This research operates in the context of a European political discourse, where the main concern is counter-cultural approaches to non-mandatory collaboration and contractual agreements. FLOSSTV (Free, Libre, Open Source Software TV) covers a broad range of practices, from television via documentary up to media arts productions. This thesis documents the endeavour to formulate a policy for FLOSS culture. FLOSSTV studies the impact of new intellectual property legislation on media production, as well as conceptions and applications of collective authorship and alternative licensing schemes. FLOSSTV sets out to explore methods that can facilitate media and arts practitioners wishing to engage in collaborative media productions. The thesis sets out to investigate the theories and histories of collaborative media and arts productions in order to set the ground for an exploration of the tools, technologies and aesthetics of such collaborations. The FLOSSTV thesis proposes a set of contracts and policies that allow for such collaborations to develop. It is through practice that this research explores FLOSS culture, including its methods, licensing schemes and technologies. In order to focus the research within the field of FLOSSTV I initiated the practice-based Deptford.TV pilot project as the central research experiment for the FLOSSTV thesis. DVD ONE contains a series of films produced collaboratively for Deptford.TV that express the characteristics and contractual arrangements of FLOSS culture. Deptford.TV is an online audiovisual database primarily collecting media assets around the Deptford area, in South­East London, UK. Deptford.TV functions as an open, collaborative platform that allows artists, film-makers, researchers and participants of the local workshops in and around Deptford, and also beyond Deptford, to store, share, re-edit and redistribute their footage and projects. The open and collaborative nature of the Deptford.TV project demonstrates a form of shared media practice in two ways: audiences become producers by submitting their own footage, and the database enables the contributors to interact with each other. Through my practice-lead research project Deptford.TV I argue that, by supporting collaborative methods and practices, FLOSS (Free, Libre, Open Source Software) can empower media and arts practitioners to collaborate in production and distribution processes of media and arts practices.
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3

Day, Allan. "An ethnographic study of FLOSS : towards an STS analysis of free/open source software production." Thesis, Goldsmiths College (University of London), 2011. http://research.gold.ac.uk/7325/.

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The thesis argues that, contrary to previous analyses of the topic, Free/Libre Open Source Software (FLOSS) must be understood as an assemblage of interconnected software projects, rather than being a singular entity. It also argues that a detailed understanding of these projects' production activities is necessary in order to gain an adequate understanding of the wider FLOSS phenomenon. In order to address these omissions in existing treatments of the topic, the thesis presents the results of a detailed, long-term, ethnographic study of a FLOSS project, the analysis of which is informed by actor-network and assemblage theory. In doing so, the material components of GNOME are a major focus, including the project's code, its communications and development infrastructure, and the role of contributors' bodies in their production activities. These aspects of the project are shown to be subject to various territorialising activities which seek to establish it and its products as having particular characteristics, and which also generate the project as a definite, delineated entity. These shared material aspects of the project are also argued to be crucial to participants' abilities to associate and collaborate with one another, and are shown to be subject to normative prescriptions and political contests. The thesis makes the case that the study of FLOSS is able to inform a more general sociological understanding of the consequences and possibilities associated with digital technologies and goods.
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4

Leonard, Landry. "Le développement d'une configuration stratégique autour du free/libre and open source software : proposition d’un cadre conceptuel à destination des entreprises de l’Open Source commercial." Thesis, Lyon 2, 2011. http://www.theses.fr/2011LYO22021/document.

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Se situant dans le champ de la stratégie, cette thèse souhaite contribuer à l’aide à la réflexion stratégique des entreprises du FLOSS commercial. Cet objectif semble atteint par la fourniture de deux construits (modèle des dynamiques et jeu de propositions) et trois illustrations par des cas d’entreprises représentatives du secteur. Le modèle des cinq dynamiques constitue un support à la formulation de l’intention et à la conception de la configuration stratégique. En éclatant l’approche communautaire classique dans les dynamiques socio-politique, psycho-cognitive et d’usage, ce travail génère un cadre conceptuel qui se propose d’intégrer la notion d’environnement FLOSS plus large que celle de communauté. Ce modèle met en évidence un besoin de repérer les acteurs et pouvoirs en présence dans un projet, de gérer les réticences de ces derniers et de s’appuyer sur les usages pour développer des pratiques qui génèrent de la collaboration. Enfin, le jeu de propositions peut servir aux entreprises du FLOSS commercial de lignes directrices et aux chercheurs de pistes à approfondir
This thesis aims to support business strategic decisions of commercial FLOSS companies. This objective appears to be achieved through two specific and flexible models (theoretical study supported by set of practical proposals) and three open source companies based case studies. The five dynamics' model is used to support the definition of the strategic intents and their deployment within an open source company. Based on socio-political, psycho-cognitive and technological use dynamics, this work generates a conceptual framework integrating the concept of FLOSS environment, much broader than only communities. This model highlights the needs to identify the different actors, their roles and scopes of influence in a project, to manage their reluctance and to mobilize collaboration tools to leverage of FLOSS practices. Finally, the set of proposals can be used as guidelines for commercial FLOSS companies strategy definition and for researchers more specific studies
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5

Steinmacher, Igor Fábio. "Supporting newcomers to overcome the barriers to contribute to open source software projects." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/45/45134/tde-30112015-131552/.

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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.
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6

Vestbø, Tor Arne. "Software Quality in the Trenches : Two Case Studies of Quality Assurance Practices in Free/Libre and Open Source Software (FLOSS)." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9659.

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When proponents of open source software are asked to explain the success of their movement they typically point to the quality of the software produced, which is in turn attributed to the rather unconventional development model of releasing unfinished versions of the software and having users look over the code and report and fix bugs. This thesis investigates the open source quality assurance model from a knowledge management perspective – based on the assumption that debugging involves a high degree of knowledge work. By doing interpretive case studies of two open source projects – using direct observation, e-mail archives, and bug-trackers as data sources – I present descriptive accounts of the day to day quality practices in open source development. The analysis shows that conceptualizing and classifying bugs is a complex process involving sense-making and subjective considerations; that the peer-review process in open source projects has a lot in common with traditional field-testing; and that communication tools and mediums are used interchangeably, but with certain preferences depending on subject matter. I conclude that perhaps the success of the open source development model is not due to its novelty compared to traditional software engineering, but because open source developers have recognized that debugging is a knowledge-intensive process. Keywords: Open Source, Software Quality, Knowledge Management

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7

Zeini, Sam, Nils Malzahn, and H. Ulrich Hoppe. "Entstehung von Innovationen in Open-Source-Netzwerken am Beispiel von Open Simulator." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-141898.

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8

Zeini, Sam, Nils Malzahn, and H. Ulrich Hoppe. "Entstehung von Innovationen in Open-Source-Netzwerken am Beispiel von Open Simulator." Technische Universität Dresden, 2009. https://tud.qucosa.de/id/qucosa%3A27996.

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9

Gajdošík, Andreas. "Open Call." Master's thesis, Vysoké učení technické v Brně. Fakulta výtvarných umění, 2018. http://www.nusl.cz/ntk/nusl-377167.

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In diploma thesis Open Call I focus on unequal position of artists in current art world in which, despite the transparent practices like open calls, still persists the cult of name, the power of networking and personal recommendation. This topic I artistically process in form of practical artistic intervention, which is close to the tactics of 1:1 scale of Arte Útil - specifically by creation of software tool called Nomin. Its purpose is to support weakened or marginalized groups of artists. Nomin uses properties of email protocol SMTP to allow its users-spectators to send fake self-recommending emails - from email addresses of famous curators to the inboxes various galleries or other art institutions. During development of program Nomin and its technical background (software documentation, web page etc.) I followed the paradigm of free, libre, open source software (FLOSS) and also the methodology of agile software development in order to provide in this gesamtsoftwerk the users-spectators with fully functional, user-friendly software and give them possibility to influence further development of Nomin or directly participate on it. Created artwork is thus not a single artefact but rather a set of interconnected objects and practices grounded in the network of social bonds and behaviours which balances on the edge of institutional critique, useful art, participatory art and collective performance.
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10

Jakobson, Fredrik. "Open source routing software : A comparative study of open source software routers." Thesis, Högskolan i Skövde, Institutionen för informationsteknologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-9520.

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As the performance of PCs is increasing it is of great interest to use these cheap devices as routers,which traditionally consisted of more expensive and customized hardware for that purpose. Thesoftware was also traditionally proprietary and thereby costly, but as the open source communityhas grown there have been development of open source solutions that can perform the task ofacting as a router. However as there are so many solutions out there, it can be hard for the potentialusers to choose which particular solution to use, without having to put in too much work intogetting a fully functional router solution. This study achieved this purpose by benchmarking themost popular open source software routers, in terms of performance and scalability as well asproviding a brief analysis of their basic security features. The routers that were studied wasClearOS, Untangle NG Firewall and IPFire, and after the study was complete IPFire was consideredthe superior with ClearOS as the second and Untangle as third and last.
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11

CHRISTOPH, ROBERTO DE HOLANDA. "SOFTWARE ENGINEERING FOR OPEN SOURCE SOFTWARE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4854@1.

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Software livres têm despertado bastante atenção, não apenas devido a popularidade obtida por alguns destes como o Linux e o Apache, mas também pela forma singular como estes sistemas são desenvolvidos e sua quantidade de adeptos. No entanto, em alguns projetos de software livre, a documentação existente dificulta a entrada de novos participantes, já que devido a informalidade do processo de desenvolvimento deste tipo de software, é comum que a documentação do sistema não receba muita atenção. Este trabalho colabora para um melhor entendimento do desenvolvimento de software livres, relacionando-o com as questões de evolução de software. Será apresentada uma proposta utilizada no software livre C e L para documentar em termos da aplicação o código do sistema, utilizando-se do conceito de cenários. Será mostrado através de um protótipo que um software seguindo esse padrão proposto pode produzir uma documentação que torna mais fácil seu entendimento para novos participantes do projeto.
This thesis presents an introduction on the use of the thermal desorption technique that is based on the direct heating of the soil, for the remediation of contaminated areas. Heat propagation through soils can be mathematically simulated using coupled heat-moisture transfer theories. In order to make this simulation possible it is necessary to identify the required parameters: hydraulic conductivity as a function of volumetric water content, thermal conductivity as a function of volumetric water content, volumetric heat capacity, and soil-water characteristic curve. One technical description of such parameters is presented. Two different kinds of soils were used, one clay- sand (CH) and one sandclay (SC). A study physico-chemical was done talking into consideration the temperature effect on the soils with X-Ray, electron microscopic investigation, CTC, Atterberg Limits and at the particle size distribution. The study was done on pre-heated soils with temperatures ranging from 20 Celsius Degrees to 300 Celsius Degrees. Equipments and methodologies have been especially developed for the study of the thermo-hydraulics proprieties. The laboratory tests program consisted of hydraulic conductivity, retention curves and deformability, taking into account the temperature effects. During the tests it was observed that all parameters were temperature dependent. The thermal parameters, thermal conductivity and heat capacity were studied for both soils.
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Möller, Steffen. "Open-source-Software : eine multiperspektivische Analyse der Implementierung von Open-source-Software in Unternehmen /." Göttingen : Cuvillier, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014916224&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Hrozek, Jakub. "Penetrační testování open-source software." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237145.

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This thesis discusses the design and implementation of integrated penetration testing system. In the first two chapters, the reader is introduced to the topic of penetration testing. The basic techniques and classification of tests are described as well as some of the most widely used methodologies. It also discusses the need to automate the testing process. The fifth and sixth chapter discuss specification and detailed design of integrated penetration testing tool. Its implementation and the problems that had arisen during the process are the theme of chapter seven. The last part of the thesis describes practical experiments done with the tool and gives the reader some advice on securing computer networks.
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14

Randhawa, Sukhwinder. "Open Source Software and Libraries." Twenty First Century Publications, 2008. http://hdl.handle.net/10150/105743.

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Open source software is, software that users have the ability to run, copy, distribute, study, change, share and improve for any purpose. Open source library softwareâ s does not need the initial cost of commercial software and enables libraries to have greater control over their working environment. Library professionals should be aware of the advantages of open source software and should involve in their development. They should have basic knowledge about the selection, installation and maintenance. Open source software requires a greater degree of computing responsibility than commercial software. Library professionals do not think seriously about the advantages of open source software for automation and hence are reluctant to use it. They do not have the expertise to support open source software. Paper highlights major open source library software.
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Seppänen, V. (Vili). "Open source version control software." Bachelor's thesis, University of Oulu, 2015. http://jultika.oulu.fi/Record/nbnfioulu-201503311195.

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Abstract. The environment around open source version control software is very opinionated and therefore it is hard to find unbiased comparison between different open source version control software. This Bachelor’s thesis provides background and covers the basics of version control systems. Thesis also categorizes and differentiates the main types of version control systems, by investigating the way they handle repositories and by categorizing them to centralized and distributed. Finally, this thesis provides the unbiased technical comparison of the selected open source version control software and a way to map a suitable one for a software project. Comparison of technical details is collected into tables for easy interpretation and the main differentiators are explained more carefully. Mapping is achieved by pairing the major characteristics of different software projects with the technical features of version control systems and then with version control software that best supports these specific features. Pairing of the software project and the version control software is further refined with technical details that are not covered by the needs of major characteristics of the software project. Selection of the open source version control software is restricted to the four most popular ones.Avoimen lähdekoodin versionhallintaohjelmistot. Tiivistelmä. Avoimen lähdekoodin versionhallintaohjelmistoista on vaikea löytää puolueetonta vertailua, koska mielipiteet niiden ympärillä ovat hyvin polarisoituneita. Tämä kandidaatintyö tarjoaa taustatietoa ja käy läpi versionhallintajärjestelmien perusteet. Lisäksi tutkielma luokittelee ja erottaa versionhallintajärjestelmien päätyypit tarkastelemalla järjestelmien tapaa käyttää versionhallinnan varastoa ja kategorisoimalla järjestelmät sen mukaan keskitettyihin ja hajautettuihin. Tämä kandidaatintyö esittää myös puolueettoman teknisen vertailun yleisimmistä avoimen lähdekoodin versionhallintaohjelmistoista ja tavan kartoittaa ohjelmistoprojektiin sopiva versionhallintaohjelmisto. Tekninen vertailu on koottu taulukoiksi tulkinnan helpottamiseksi. Lisäksi pääeroavaisuudet on käyty läpi tarkemmin. Sopivan versionhallintaohjelmiston kartoittaminen ohjelmistoprojektiin on toteutettu yhdistämällä ohjelmistoprojektien tunnusomaiset piirteet versionhallintajärjestelmien ominaisuuksiin ja tämän jälkeen valitsemalla versionhallintaohjelmisto, joka toteuttaa kyseiset ominaisuudet. Tämän lisäksi versionhallintaohjelmiston valintaa tarkennetaan ottamalla huomioon ne tekniset eroavaisuudet, jotka eivät tule esiin tarkasteltaessa ohjelmistoprojektin tunnusomaisia piirteitä. Avoimen lähdekoodin versionhallintaohjelmistoista mukaan on valittu vain neljä käytetyintä.
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Nilsson, Mats. "Open Source Business Models." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3950.

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This thesis is describing a business strategy of how to license a software product. The licenses discussed in this thesis are called open source licenses. The open source licenses have gained much attention lately by companies such as Microsoft, IBM, and Sun Microsystems. The reason for this is that some products considered being open source software are very widely used. These products include the most popular web server, the Apache web server, with more than 60% market share. 25% of the installed operating systems that are running Apache and other web servers are installed with Linux as operating system, which is also considered as open source software. These are only two examples of popular products that are considered as open source software products. These products are choices for many people and companies when choosing software to use, for example NASA. Open source licenses are called open in the way that the software is shipped not only in binary form, but also with the source code that can be modified and recompiled to suit the buyer’s need better. Apache web server and the Linux operating system are free for download, install, run and modify to suit your needs. In this thesis I will discuss whether these licenses can increase the chance of developing a successful product or not, in terms of market shares.
Affärsmodeller kring öppen källkod diskuteras i denna magisteruppats. Det finns ett flertal programvaror byggd på öppen källkod som kan betraktas som framgångsrika om man avser antal användare eller hur stora marknadsandelar produkterna har. Diskussionen i magister uppsatsen kretsar därför om man kan öka sina chanser att utveckla framgångsrika produkter genom att använda sig av öppen källkod främst ur ett företags perspektiv som har vinstintresse.
Mats Nilsson Kabelgatan 13D 414 57 Göteborg
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17

Du, Preez Jacobus Andries. "Novells open source evolution a case study in adapting open source business strategies /." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-03102006-171345.

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18

Onsøien, Magni. "Women and Open Source Software Development." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9302.

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The Open Source community seems to suffer from a lack of female developers. In this thesis I have looked at different initiatives to increase the female participation. According to other studies the percentage of female open software developers is about 1.5%. My analysis of some mailing lists for open source projects shows that this number seems to be accurate. Open source is no longer a marginalised part of the IT market, but has become a mainstream and common alternative. Broader participation will probably increase the quality of the software.

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Skarpenes, Tron André, and Ketil Sandanger Velle. "Open Source Software at Telenor IS." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9876.

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Open Source Software (OSS) is becoming a real alternative to proprietary software because of the attractive characteristics it might bring (e.g. reduced costs, independence from vendors and increased innovation). Consequently, adoption of OSS is getting more attention and the industry is adopting OSS in a much larger scale than before. Telenor IS, the information system branch of Telenor Nordic, has realized that OSS adoption is increasing and noticed the advantages that OSS might bring for them. Therefore they have started a project called Open Source 2010. Among this project’s goals are finding suitable OSS products to use within the company, and to increase the overall adoption of OSS to avoid “lock-in” to commercial vendors and be able to cut costs. As part of the Open Source 2010 project, we investigated three issues. The first is what concrete experience the individual employee has with OSS. The second is to examine the employees’ attitude towards OSS, and how they assess an increased use of OSS in Telenor IS. The third is exploring which advantages and risks OSS could bring, in addition to which preparations that should be made to ease the adoption of OSS. To investigate these issues, we cooperated with Telenor IS to develop a survey consisting of both interviews and a questionnaire. To validate, supplement and disseminate the results from the survey, two workshops were conducted with Telenor employees. This thesis has three main contributions. 1. Empirical findings showing that: (i) There is no real difference in attitudes towards OSS between leaders and non-leaders. (ii) A notable amount of OSS is in use, supporting that OSS adoption is increasing. (iii) Leaders are not necessarily aware of all the OSS being used. 2. Identification of several advantages, risks and preparations which are important to consider when increasing use of OSS. Several of these are generalizable, and could be considered by other companies planning to adopt OSS. 3. Increasing the visibility of the OSS project inside the Telenor IS organization. This is important, so that the individual employee in Telenor becomes aware of the project. In addition to increased visibility, the survey involves the employees and makes their voice heard in the OSS adoption process.

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Tariq, Muhammad Tahir and Aleem. "Quality of the Open Source Software." Thesis, Blekinge Tekniska Högskola, Avdelningen för programvarusystem, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-1251.

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Quality and security of software are key factors in the software development. This thesis deals with the quality of open source software (OSS for short) and different questions that are related with open source and close source software has discussed in the thesis proposal. Open source software is a process by which we can produce cheap and qualitative software and its source could be re-use in the development of the software. Close source software is more expensive than open source software and we can not re-use its source code, so there should be a way by which cheap and qualitative software should be produced. This thesis describes that how the quality of the open source software can be evaluated and increased. There are different factors which are helpful to increase the software quality these factors are low cycle time, low cost and small size of software. These factors are also helpful for the development of software product according to the requirement of clients and the users of that software. This thesis also describes the security and performance of close and open source software and it also analyze different software development processes. The quality of OSS can be increased by use of best evaluation techniques, best quality measurement, best development tools and best development process. There are also many challenges for OSS, which it has to face for improvement of the quality of OSS. Initially there were many drawbacks in open source software but with the passage of time improvement has produced in it. This thesis also describes the compression, advantages and disadvantages of the close source and open source software.
0046-737218653 , 0046-739131829
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Wong, Ken Chi Ho. "Platform leadership in open source software." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100313.

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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 125-134).
Industry platforms in the software sector are increasingly being developed in open source. Firms seeking to position themselves as platform leaders with such technologies must find ways of operating within the unique constraints of open source development. This thesis aims to understand those challenges by analyzing the Android and Hadoop ecosystems through an augmented version of Porter's Five Forces framework proposed by Intel's Andrew Grove. The analysis finds that platform contenders in open source behave differently depending on whether they focus on competing against alternative platforms or alternative providers of the same platform as rivals. This focus informs key decisions that the firm takes, including how it interacts with complementors and its approach to innovation. Due to the fact that open source vendors tend to lack unilateral authority over technology decisions, they can only seek to influence the behavior of the ecosystem by securing key relationships in the value network. In particular, they must secure the right engineering talent, access to key complements and superior paths to the customer. The research highlights some of the factors and tactics platform contenders in Hadoop and Android considered in acquiring these relationships. The open nature of FOSS (Free and Open Source Software) also allow new technologies to emerge and change the definition of the platform's boundaries. This creates a further strategic challenge for open source platform contenders. Keywords: platform strategy, platform leadership, open source software, Hadoop, Android.
by Ken Chi Ho Wong.
S.M. in Engineering and Management
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Hauge, Øyvind. "Open Source Software in Software Intensive Industry - A Survey." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9653.

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The use of Open Source Software (OSS) has increased in both the industry and the public sector. The software intensive industry integrates OSS into their products, participates in the development of OSS products, and develops its own OSS products. The understanding of how and why the industry is approaching OSS is so far limited. To help fill this gap, this thesis intends to explore how and why the software intensive industry approaches OSS. This is done by performing an extensive literature study and by executing a web-based survey. This survey is distributed to a near representative sample of companies from the Norwegian software intensive industry and to a convenience sample of participants in the ITEA 2 research program. The research presented here shows that OSS components are widely used in the software intensive industry. Close to 50% of the Norwegian software intensive industry uses OSS in its development. The industry is mainly motivated to use OSS by practical reasons. OSS components provide functionality of high quality and the industry is satisfied with its use of these components. When using OSS, the industry benefits from the availability of source code, and easy access to components and information about these components. Companies participate in OSS projects because they use the software and because of the learning effect of this participation. The participation is however limited. However, some companies provide commercial services related to the OSS projects they participate in. Releasing a product as OSS attracts more users and customers to a product. These community members may contribute with implemented code, feedback, and requirements. There are, however some side-effects related to releasing an OSS product and companies should be aware of these consequences. The main contributions of this thesis are new understanding of how and why companies approach OSS, a reusable research design, and experiences performing survey research.

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Almeida, Daniel A. "Investigating software developers' understanding of open source software licensing." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/62756.

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Software provided under open source licenses is widely used, from forming high-profile stand-alone applications (e.g., Mozilla Firefox) to being embedded in commercial offerings (e.g., network routers). Despite the high frequency of use of open source licenses, there has been little work about whether software developers understand the open source licenses they use. To help understand whether or not developers understand the open source licenses they use, I conducted a survey that posed development scenarios involving three popular open source licenses (GNU GPL 3.0, GNU LGPL 3.0 and MPL 2.0) both alone and in combination. The 375 respondents to the survey, who were largely developers, gave answers consistent with those of a legal expert's opinion in 62% of 42 cases. Although developers clearly understood cases involving one license, they struggled when multiple licenses were involved. To understand the context in which licensing issues arise in practice, I analyzed real-world questions posed by developers on online question-and-answer communities. The analysis of these questions indicate that licensing issues can constrain software evolution and technical decisions can have an impact on future licensing issues. Finally, I interviewed software developers in industry to understand how developers reason about and handle license incompatibility in practice. The developers I interviewed are cautious of restrictive licenses. To identify potential licensing issues, these developers rely on licensing guidelines provided by their organization and sometimes use specialized tools to automatically detect licensing issues in their projects. When faced with a situation in which a component that suits their needs is not compatible, developers tend to look for alternative components made available by open source communities. They sometimes leverage the technical architecture of their projects to enable the use of components under restrictive licenses and might rewrite the required functionality if necessary. An analysis of the results indicate a need for tool support to help guide developers in understanding the structure of the code and the technical details of a project while taking into account the exact requirements imposed by the licenses involved.
Science, Faculty of
Computer Science, Department of
Graduate
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Gozukeles, Ibrahim Izlem. "Free And Open Source Software In Turkey." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607173/index.pdf.

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In recent years, there has been growing interest of governments and firms for Free and Open Source Software (FOSS). However, FOSS is still a puzzlement for a wide spectrum of academic disciplines. Social scientists ask why FOSS hackers participate in FOSS if they do not get any monetary rewards. On the other hand firms ask, how a firm can earn money from FOSS. In this study, motivations of FOSS hackers and firms are taken as an interrelated phenomenon. For FOSS hackers, social and technical aspects of FOSS are essential. On the contrary to FOSS hackers, firms have profit oriented goals. In this context, conflicting and coinciding interests of FOSS hackers and firms are investigated through development of FOSS in Turkey. Software industry in Turkey is not developed enough and FOSS may play a prominent role in developing its own software industry. This study discusses FOSS both from the view of hackers and the firms in Turkey. In that respect, social conditions that make hackers voluntarily contribute, discrepancies between attitudes and behaviors of the firms and FOSS licenses are explored. According to these facts, possible FOSS business strategies which may be adopted in Turkey are presented.
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Wu, Jingwei. "Open Source Software Evolution and Its Dynamics." Thesis, University of Waterloo, 2006. http://hdl.handle.net/10012/1095.

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This thesis undertakes an empirical study of software evolution by analyzing open source software (OSS) systems. The main purpose is to aid in understanding OSS evolution. The work centers on collecting large quantities of structural data cost-effectively and analyzing such data to understand software evolution dynamics (the mechanisms and causes of change or growth).

We propose a multipurpose systematic approach to extracting program facts (e. g. , function calls). This approach is supported by a suite of C and C++ program extractors, which cover different steps in the program build process and handle both source and binary code. We present several heuristics to link facts extracted from individual files into a combined system model of reasonable accuracy. We extract historical sequences of system models to aid software evolution analysis.

We propose that software evolution can be viewed as Punctuated Equilibrium (i. e. , long periods of small changes interrupted occasionally by large avalanche changes). We develop two approaches to study such dynamical behavior. One approach uses the evolution spectrograph to visualize file level changes to the implemented system structure. The other approach relies on automated software clustering techniques to recover system design changes. We discuss lessons learned from using these approaches.

We present a new perspective on software evolution dynamics. From this perspective, an evolving software system responds to external events (e. g. , new functional requirements) according to Self-Organized Criticality (SOC). The SOC dynamics is characterized by the following: (1) the probability distribution of change sizes is a power law; and (2) the time series of change exhibits long range correlations with power law behavior. We present empirical evidence that SOC occurs in open source software systems.
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Nasserifar, J. (Javad). "Open source software ecosystem:a systematic literature review." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201605251960.

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Background: Currently having a software ecosystem is vital for many technology businesses. For this reason, understanding of software ecosystem and its benefits and also the elements of each software ecosystem can help business and software communities to emerge and orchestrate the products ecosystem optimally. Moreover, an interesting phenomenon in computer science and information technology is open source software and systems which enable users to participate in developing and using the software at many scales, from a simple mobile application to large-scale business systems and ICT applications. Objective: Study of open source software ecosystem (OSS-Ecosystem) and its roles, impacts and actors in software engineering domain will reveal how practitioners and researchers encounter open source software ecosystem and the results will be applicable to other software technology products and ICT business. The main goal is to understand how open source ecosystem can promote the products in a competitive market. Methods: There is a handful of systematic literature reviews published on the concepts of the software ecosystem. This study is an attempt to bring out the relevance of open source phenomenon and software ecosystem through systematic literature review principles. This research method will show the quality of the combination of these two subjects. Results: The research strategy resulted in 462 kinds of literature, from which 93 articles were chosen as the set of primary studies. The state-of-the- art of OSS-ecosystem is clearer by its definition. Model’s and actor’s lists are presented to give a better overview of the functionality of ecosystem. Eventually, advantages and other challenges of OSS-ecosystem are cited to deliver business opportunities. Conclusion: Through out the literature definitions found for OSS-ecosystems and few of them customized for OSS-ecosystem the requirement for the definition of single open source ecosystem is required. However, various models have been proposed. To understand the models’ functionality better, models are classified according to model purpose into five categories. Furthermore, important benefits and challenges extracted as a resource for decision-making process for projects or companies to make OSS-ecosystem foundation.
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Kyrychenko, A. "Open source CNC software for parallel manipulators." Thesis, ONPU, 2013. http://dspace.kntu.kr.ua/jspui/handle/123456789/7037.

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The application of open-source LinuxCNC software for parallel kinematic machine tools and parallel manipulators is considered. Control architecture and LinuxCNC configurations were developed and successfully tested for Stewart platform machine tool and delta robot.
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Eilhard, Jan. "Tapping into the source : corporate involvement in open source software." Paris, ENMP, 2010. http://tel.archives-ouvertes.fr/tel-00528121.

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La participation des entreprises aux logiciels libres touche des domaines différents aux sciences économiques et sciences sociales. Elle est parmi d'autres une expérience naturelle pour la production des biens publics, pour l'innovation collective, pour les technologies disruptives, pour l'externalisation des technologies ou pour les organisations décentralisées. Cette thèse se concentre sur la production des biens publics, l'innovation collective et l'externalisation des technologies. Dans notre analyse, nous utilisons une base de données de 10 000 logiciels libres trouvables sur SourceForge et lions l'information des développeurs aux profils académiques, salariés et bénévoles
Corporate participation in open source software touches upon a number of different issues in economics and social sciences. It is, among others, a natural experiment for the private provision of a public good, for gift giving, for collective invention, for disruptive technologies, for technology outsourcing or for decentralized organizations. Little does it surprise then that academia strives to understand corporate involvement in open source software. This thesis focuses on three aspects within this vast field: the private provision of a public good, collective invention as well as outsourcing of technology. For our analysis, we use a dataset of 10,000 open source applications from Source-Forge and relate information about developers to three categories as academic, corporate or private ones
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Rosenfall, Thomas. "Open Source Vendors’ Business Models." Doctoral thesis, Linköpings universitet, Industriell marknadsföring och industriell ekonomi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-76737.

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It may seem controversial that open-source software (OSS), i.e. software created by voluntary contributions that is available to use, change, and distribute for free, can be utilized for business purposes. Yet, for some firms, commercial OSS software products are the primary source of revenue. In this thesis, these companies are referred to as OSS vendors. Although some OSS vendors have existed for more than thirty years, how they conduct their business has not been extensively studied. Business models as a concept has been widely used in the information and communications technology (ICT) industry, often when describing firms working with OSS. In that context business models often refer to the offering, i.e. the products the firm offers to its customers and how revenues are collected. However, in academia the business model concept has evolved in a broader sense encompassing several fields and into a rich theoretical field itself. This thesis aims to further the understanding on how OSS vendors conduct their business, by using a business model framework, which has been constructed from business model and management theories. This framework was used to study OSS vendors to investigate the configurations of their business models. A cross-case analysis of four carefully selected OSS vendors searched for generic patterns in these configurations. Furthermore, the cases were also studied regarding sustainability and profitability. Two generic business model configurations were found, community immersion and community utilization. OSS vendors found configured according to the community immersion business model are deeply involved with, but also dependent on, the main community project that provides the software for the offering. OSS vendors found configured according to the community utilization business model are not dependent on the OSS project to provide their commercial offerings. Rather, the communities are used in marketing providing brand benefits, a base for recruitment, and in lesser degree functioned as quality assurance. Two of the four studied companies were found to be profitable and sustainable; one operating according to the community immersion business model and the other according to the community utilization business model. The other two companies studied, observed to operate according to the community utilization business model, did not achieve profitability during the time of the study. The findings should further the understanding of how profitable OSS vendors’ business models could be configured, and thus provide practitioners with an understanding on how different business model configurations can affect their strategies and overall business.
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Chapman, Steve. "Open source trouble ticket system." [Denver, Colo.] : Regis University, 2009. http://165.236.235.140/lib/SChapmanPartI2009.pdf.

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Zhang, Jianhao, and Xuxiao Chen. "Software Evolvability Measurement Framework during an Open Source Software Evolution." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13983.

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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.
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Cooper, Thomas A. "Integration of Open-Source Networks." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/32401.

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Global System for Mobile Communications (GSM) networks are receiving increasing attention in the open-source community. Open-source software allows for deployment of a mobile cellular network with lower costs, more customization, and scalable control. Two popular projects have emerged that offer varying network architectures and allow users to implement a GSM network in different capacities depending on individual needs. Osmocom provides more network control and scalability but requires commercial Base Transceiver Station (BTS) hardware with limited availability and closed source code. OpenBTS provides minimal GSM network functionality with more easily available and open-source hardware; however, it does not allow multi-cellular network configuration. This thesis offers a significant contribution towards a fully open-source GSM network by integrating the two major open-source communities, Osmocom and OpenBTS. Specifically, the Osmo-USRP program provides an inter-layer interface between the different network architectures of two GSM base station projects. Inter-layer primitive messages are processed in a thread multiplexer that manages logical channels across the interface. Downstream flow control is implemented in order to receive data frames on time for transmitting at the appropriate GSM frame number (FN). Uplink measurements, which are necessary for decision making in the Base Station Controller (BSC), are also gathered in the physical layer of Osmo-USRP and reported to Osmocom. Osmo-USRP operation is tested using a Universal Software Radio Peripheral (USRP), a relatively inexpensive and accessible Software-Defined Radio (SDR). Standard GSM events are investigated for single cell and multi-cellular network configurations. These tests include subscriber authentication and encryption, location updating, International Mobile Subscriber Identity (IMSI) attach and detach, Short Message Service (SMS) storage and delivery, voice calls with the full-rate audio codec, and uplink and downlink measurement reporting. While most functionality is successfully tested, inter-cell handover is not currently implemented. Further details on the proposed implementation of program limitations, especially inter-cell handover, are also discussed.
Master of Science
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Kugler, Petra. "Coordinating innovation : evidence form open source software development /." [St. Gallen] : [s.n.], 2005. http://aleph.unisg.ch/hsgscan/hm00142393.pdf.

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Salvatore, Ricardo Brigatto. "Using open source software in visual simulation development." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Sep%5FSalvatore.pdf.

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Johansson, Christian. "Computer Forensic Text Analysis with Open Source Software." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik och datavetenskap, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-4994.

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Detta papper koncentrerar sig på kriminaltekniska undersökningar av text, med fokus på användande av mjukvara med öppen källkod. Pappret diskuterar och undersöker olika tekniker för framtida automatisering av dessa undersökningar.
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Chauhan, Muhammad Aufeef. "Evolvability Analysis Method for Open Source Software Systems." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-11851.

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Software systems evolve over the life span to accommodate changes in order to meet technical and business requirements. Evolution of open source software (OSS) is challenging because of involvement from a large number of independent teams and developers who make modifications in the systems according to their own requirements. It is required to evaluate these changes as these are being incorporated into the system against the long term evolvability objectives. This paper presents the analysis of the Hackystat, an OSS framework; against analyzability, changeability, extensibility, testability domain specific quality attributes. The analysis of the processes used during the development of the OSS systems is also discussed. On the basis of the analysis and the early research conducted to evaluate software evolvability, an evolvability analysis method for OSS evolution is presented in this report. Guidelines of the model suggest that the requirements identification and analysis, identification of the system components that are to be affected as a result of the change, identification and prioritization of the potential solutions, evaluation of the potential solutions with respect to evolvability characteristics, use of test driven development and automated build tools are the important steps that should be performed to evaluate system changes. Evolvability analysis model also suggests that the team which is responsible to for system overall architecture (project control group) should also evaluate changes submitted by different teams. A case study to modify a service oriented architecture bases system into software as a service cloud model following the guidelines of evolvability analysis model is also presented.
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Maass, Christian. "Strategische Optionen im Wettbewerb mit Open-Source-Software /." Berlin : Logos, 2006. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014764371&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Barth, M. (Matthew). "Successful usability testing in open source software projects." Master's thesis, University of Oulu, 2014. http://urn.fi/URN:NBN:fi:oulu-201405241500.

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Open source software has long been the domain of in-house production and personal use software programs. As the Internet becomes less and less of a specialist tool, this particular paradigm shifts. Now, many commercially available pieces of software are being created, as a whole or in part, with open source projects. As this happens, open source coders, who are used to creating software for themselves are facing the need to create a product that other people can use, some of whom are not technology aficionados. This thesis examines the process of implementing usability activities in open source software and looks at what does or does not work in the context of the open source community. This process begins with the creation of a usability case study, guided by Design Science Research method. Once that has been completed, a Comparative Analysis is conducted of that case study as compares to eight other cases from the same research series. As a result of this work, a methodology is proposed to outline the process of introducing usability testing into an open source project.
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Černá, Andrea. "Využití open source software ve veřejné správě ČR." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-19167.

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This thesis deals with problems of open source software and its usage in an organization. The thesis is divided into three main parts; first of them describes the definiton, history, characteristic and actual offer of open source software; second part moves us to the Public Administration world, where it surveys stage of implementation of open source software in some countries around the world and in the Czech Republic especially; third part uses gained finding from the previous parts to design application architecture to particular conditions of The University of Economics, Prague. First of the main goals of this thesis is to analyse possibilities of implementation of open source software instead of closed software. Next one is to chart the state of implementation of this type of software into Public Administration field in the Czech Republic and abroad. Last objective is to project application architecture with usage of open source software to particular condition of The University of Economics, Prague. These goals was achieved by studying many information resources, discussions with specialist, including of representatives of the state, about the given topics, and further analyse of current conditions of The University of Economics, Prague. Benefits of this thesis are especially compact view on open source software, further the survey of opinions of representatives of state, representatives of towns and next specialists on this type of software a its possibilities of usage in public administration. Last but not least benefit is to desing the application architecture to particular, rather complex, environment of The University of Economics, Prague.
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Daniel, Sherae Lee. "Absorptive capacity and open source software project performance." College Park, Md.: University of Maryland, 2007. http://hdl.handle.net/1903/7730.

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Thesis (Ph. D.) -- University of Maryland, College Park, 2007.
Thesis research directed by: Robert H. Smith School of Business. Dept. of Decision and Information Technologies. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
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Orman, Wafa Hakim. "Essays on the Economics of Open-Source Software." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194243.

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This dissertation comprises three essays analyzing various economic questions relating to open-source software development. The common thread linking these essays is the long-term sustainability of the open-source software development model, which is largely built on unpaid contributions from individual developers scattered across the world. The first essay develops a theoretical analysis of the market for operating systems as two-sided platforms, modeling the effects of competition and compatibility between a proprietary platform developed by a profit-maximizing firm, and an open platform (a public good developed by volunteers). Looking at the impacts on the proprietary platform firm, and application developer firms and users of both platforms, I find that under certain circumstances, a proprietary platform can find it profitable to become compatible with the open platform. However, it is always optimal in terms of social welfare to have compatibility between platforms. The second essay uses a laboratory experiment to examine how these characteristics and levels of motivations that are heterogeneous across individuals interact to result in sustainable, non-zero levels of contribution to open source software. There is a pronounced “leadership effect,” with subjects playing in the first position invariably contributing more frequently than those in the second position, and so on. Heterogeneity preserves the leadership effect, but increases contributions across the board, and eliminates the pattern of declining individual and total group contributions over time frequently observed in public goods experiments. The third essay studies the micro-foundations of open-source software contributions and provides an empirical examination of developer motivations using survey data. If open-source contributions and education are both signals of ability, then their impact on income is likely to be linked. They may be complements if open source contributions reinforce the signal from education by showing that one stands out from the crowd, or they might be substitutes if open-source development replaces expensive education in honing programming skills by offering more immediate feedback. Using an instrumental variables framework to deal with the endogeneity of the education and contribution choices, I find that leading an open-source project and completing college are complementary practices, so that the signaling and reputation-building aspect dominates.
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Henkel, Joachim. "Offene Innovationsprozesse die kommerzielle Entwicklung von Open-Source-Software /." Wiesbaden : Dt. Univ.-Verl, 2007. http://sfx.metabib.ch:9003/sfx_locater?sid=ALEPH:DSV01&genre=book&isbn=978-3-8350-0978-3&id=doi:10.1007/978-3-8350-5497-4.

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Zhang, Hailing. "Comparison of Open Source License Scanning Tools." Thesis, Linnéuniversitetet, Institutionen för datavetenskap och medieteknik (DM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-97921.

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We aim to determine the features of four popular FOSS scanning tools, FOSSology,FOSSA, FOSSID(SCAS), and Black Duck, thereby providing references for users tochoose a proper tool for performing open-source license compliance in their projects.The sanity tests firstly verify the license detection function by using the above tools toscan the same project. We consider the number of found licenses and scanned sizes asmetrics of their accuracy. Then we generate testing samples in different programminglanguages and sizes for further comparing the scanning efficiency. The experiment datademonstrate that each tool would fit different user requirements. Thus this project couldbe considered as a definitive user guide.
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Perugupalli, Ranganath. "Empirical assessment of architecture-based reliability of open-source software." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3677.

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Thesis (M.S.)--West Virginia University, 2004.
Title from document title page. Document formatted into pages; contains x, 70 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 66-70).
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Hermansson, Patrik. "Interaction and influences in an Open-Source eco system." Thesis, University of Skövde, School of Humanities and Informatics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-1322.

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The development of open source software has gone from a model characterized by skilled software developers that developed open source software for their own interest and their own needs to a model that is more business friendly and more attractive for companies and organizations. One new business model for open source software is the professional open source software model or OSS 2.0. The business model includes three roles: the open source project, the professional open source company and the user. This dissertation studies the relationship between these three roles and focuses on the development of the user role and how it may develop for a new user in a specific OSS ecosystem.

The roles in the eco system that has been studied are taken by the open source project Alfresco, the professional open source company Redpill and a user from a large international company, without any previous experience of open source software or the business model of professional open source. The result of the study showed a well developed eco system between the open source project and the professional open source company but a need of more information about the user’s role in it. Open source software is still seen by the user as an unsafe and unsecure alternative to the proprietary software available and more information about the business model of professional open source software and how the user can interact and influence the eco system is still needed.

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46

Happ, Simone, and Berit Jungmann. "Einsatz von Open Source im eLearning." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-155809.

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Open Source Software (OSS) ist immer mehr verbreitet und anerkannt. Sie zeichnet sich insbesondere durch die Offenlegung des Quellcodes und die Möglichkeit der freien Verwendung und Weiterverarbeitung aus1. Auch im Bereich des eLearning2 spielen Open Source Lösungen zunehmend eine große Rolle, wobei sich vor allem in Universitäten zahlreiche Communities herausgebildet haben.
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47

Batikas, Michail. "SME’s participation to Free Libre Open Source Software Communities." Doctoral thesis, Universitat Pompeu Fabra, 2011. http://hdl.handle.net/10803/38704.

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Les motivacions entorn al programari lliure han estat sempre un tema de gran interès, sent la pregunta més obvia, "perquè les persones treballen de forma gratuïta?". Les motivacions dels desenvolupadors han estat establertes (per exemple, von Hippel (2001), Lerner and Tirole (2002)). De la mateixa manera que ho han estat per a les empreses grans i petites que adopten programari lliure basat en models de negoci (per exemple, Lakhani and von Hippel, 2003; Fitzgerald, 2006; Krishnamurthy, 2004). No obstant això, un nombre cada vegada més elevat de les PIMES amb estratègies que no estan directament relacionades amb aquest model de negoci estan contribuint a les comunitats de programari lliure. En aquest estudi s'investiga les motivacions d'aquestes empreses des d'un punt de vista de comportament mitjançant un model d'investigació basat en TPB (Theory of Planned Behavior). Hem demostrat que factors com la "obertura" d'una PIME, la importància percebuda del programari lliure, els desenvolupadors (empleats) d'una PIME, juntament amb l'ambient extern, podrien influir en la decisió d'una PIME a participar en comunitats de programari lliure. A més, hem demostrat que es poden identificar algunes diferències entre empreses d'alta base tecnològica i empreses amb poca base tecnològica. Aquestes conclusions poden ajudar governs nacionals o regionals per millorar el disseny de polítiques per tal d'incentivar l'ús i la participació de les empreses en les comunitats de programari lliure. Especialment ara, degut a la forta crisi econòmica que pateix Europa, el programari lliure pot ser una solució adequada per a fomentar la innovació.
Motivations in FLOSS have always been a subject of great interest, by starting with the most obvious question, “why people work for free?”. The motivations of developers have been well established (eg von Hippel (2001), Lerner and Tirole 2002). The same exists also for big and small companies adopting FLOSS based Business Models (eg Lakhani and von Hippel, 2003; Fitzgerald 2006; Krishnamurthy, 2004). However an increasing number of SMEs with strategies not directly related to the Business Model are contributing to FLOSS communities. In this study we try to investigate these motivations under a behavioral perspective by using a research model based on TPB (Theory of Planned Behavior). We demonstrated that factors like the “openness” of a SME, the perceived importance of FLOSS, the developers (employees) of a SME along with the external environment of a SME, could influence the decision of a SME to participate in FLOSS communities. Also, we have demonstrated that some differences can be identified between high tech firms and non high tech firms. These findings can help national or regional governments to design better policies in order to better promote the use and the participation of firms to FLOSS communities. Especially now, in times of heavy economical crisis in Europe, FLOSS can be an adequate solution to foster innovation.
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48

Franco, Bedoya Oscar Hernán. "Open source software ecosystems quality analysis from data sources." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/462101.

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Background: Open source software (OSS) and software ecosystems (SECOs) are two consolidated research areas in software engineering. The adoption of OSS by firms, governments, researchers and practitioners has been increasing rapidly in the last decades, and in consequence, they find themselves in a new kind of ecosystem composed by software communities,foundations, developers and partners, namely Open Source Software Ecosystem (OSSECO). In order to perform a systematic quality evaluation of a SECO, it is necessary to define certain types of concrete elements. This means that measures and evaluations should be described (e.g., through thresholds or expert judgment). The quality evaluation of an OSSECO may serve several purposes, for example: adopters of the products of the OSSECO may want to know about the liveliness of the OSSECO (e.g., recent updates); software developers may want to know about the activeness (e.g., how many collaborators are involved and how active they are); and the OSSECO community itself to know about the OSSECO health (e.g., evolving in the right direction). However, the current approaches for evaluating software quality (even those specific for open source software) do not cover all the aspects relevant in an OSSECO from an ecosystem perspective. Goal: The main goal of this PhD thesis is to support the OSSECO quality evaluation by designing a framework that supports the quality evaluation of OSSECOs. Methods: To accomplish this goal, we have used and approach based on design science methodology by Wieringa [1] and the characterization of software engineering proposed by M. Shaw [2], in order to produce a set of artefacts to contribute in thequality evaluation of OSSECOs and to learn about the effects of using these artefacts in practice. Results: We have conducted a systematic mapping to characterize OSSECOs and designed the QuESo framework (a framework to evaluate the OSSECO quality) composed by three artifacts: (i) QuESo-model, a quality model for OSSECOs; (ii) QuESoprocess, a process for conducting OSSECO quality evaluations using the QuESo-model; and (iii) QuESo-tool, a software component to support semi-automatic quality evaluation of OSSECOs. Furthermore, this framework has been validated with a case study on Eclipse. Conclusions: This thesis has contributed to increase the knowledge and understanding of OSSECOs, and to support the qualityevaluation of OSSECOs. [
ntecedentes: el software de código abierto (OSS, por sus siglas en inglés) y los ecosistemas de software (SECOs, por sus siglas en inglés) son dos áreas de investigación consolidadas en ingeniería de software. La adopción de OSS por parte de empresas, gobiernos, investigadores y profesionales se ha incrementado rápidamente en las últimas décadas, y, en consecuencia, todos ellos hacen parte de un nuevo tipo de ecosistema formado por comunidades de software, fundaciones, desarrolladores y socios denominado ecosistema de software de código abierto. (OSSECO, por sus siglas en inglés)). Para realizar una evaluación sistemática de la calidad de un SECO, es necesario definir ciertos tipos de elementos concretos. Esto significa que tanto las métricas como las evaluaciones deben ser descritos (por ejemplo, a través de datos históricos o el conocimiento de expertos). La evaluación de la calidad de un OSSECO puede ser de utilidad desde diferentes perspectivas, por ejemplo: los que adoptan los productos del OSSECO pueden querer conocer la vitalidad del OSSECO (por ejemplo, el número de actualizaciones recientes); los desarrolladores de software pueden querer saber sobre la actividad del OSSECO (por ejemplo, cuántos colaboradores están involucrados y qué tan activos son); incluso la propia comunidad del OSSECO para conocer el estado de salud del OSSECO (por ejemplo, si está evolucionando en la dirección correcta). Sin embargo, los enfoques actuales para evaluar la calidad del software (incluso aquellos específicos para el software de código abierto) no cubren todos los aspectos relevantes en un OSSECO desde una perspectiva ecosistémica. Objetivo: El objetivo principal de esta tesis doctoral es apoyar la evaluación de la calidad de OSSECO mediante el diseño de un marco de trabajo que ayude a la evaluación de la calidad de un OSSECO. Métodos: Para lograr este objetivo, hemos utilizado un enfoque basado en la metodología design science propuesta por Wieringa [1]. Adicionalmente, nos hemos basado en la caracterización de la ingeniería de software propuesta por M. Shaw [2], con el fin de construir un conjunto de artefactos que contribuyan en la evaluación de la calidad de un OSSECO y para conocer los efectos del uso de estos artefactos en la práctica. Resultados: Hemos realizado un mapeo sistemático para caracterizar los OSSECOs y hemos diseñado el marco de trabajo denominado QuESo (es un marco de trabajo para evaluar la calidad de los OSSECOs). QuESo a su vez está compuesto por tres artefactos: (i) QuESo-model, un modelo de calidad para OSSECOs; (ii) QuESo-process, un proceso para llevar a cabo las evaluaciones de calidad de OSSECOs utilizando el modelo QuESo; y (iii) QuESo-tool, un conjunto de componentes de software que apoyan la evaluación de calidad de los OSSECOs de manera semiautomática. QuESo ha sido validado con un estudio de caso sobre Eclipse. Conclusiones: esta tesis ha contribuido a aumentar el conocimiento y la comprensión de los OSSECOs, y tambien ha apoyado la evaluación de la calidad de los OSSECOs
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49

Jagannathan, Srivatsan. "Comparison and Evaluation of Open-source Cloud Management Software." Thesis, KTH, Kommunikationsnät, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99004.

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The number of cloud management software related to a private infrastructure-as-a-service cloud is increasing day-by-day. The features of the cloud management software vary significantly and this creates a difficulty for the cloud consumers to choose the software based on their business requirements. An example of the problem is choosing software with a power management feature. The power management feature is used to increase the efficiency of energy consumption by consolidating virtual machines together and turning off unused physical servers, which is not provided by many cloud management software. OpenNebula is one of the most widely used open-source cloud management software among research institutions and enterprises. However, the performance characteristic of OpenNebula is not well studied in the existing literature. An example of the problem is choosing a hardware configuration to run OpenNebula for the research institutions and enterprises. The first objective of this thesis is to develop a framework for comparing features of various cloud management software. For developing this framework, existing works are reviewed. The cloud management software is installed on the KTH LCN testbed for hands-on experience. Both the open-source and the commercial software are analyzed for developing the framework. The major contribution related to the framework is identifying features provided for the commercial software that are not available for the open-source software. The features are: (1) co-location of VMs is running a group of VMs on the same physical machine (for example, if the web server VM has to access the application server VM for getting the web pages, they can be placed on the same physical machine); (2) anti-co-location of VMs is not allowing a pair of VMs to run on a single physical machine (for example, the primary and back-up web server VMs should always run on the different physical machines); (3) the resources of the physical machines can be combined (e.g., number of CPU cores, physical memory) as a resource pool and compartmentalized into an organizational structure (e.g., HR, development, testing, etc). The second objective of this thesis is to evaluate the performance of the OpenNebula cloud management software. For the performance evaluation, existing works are reviewed to identify the metrics, and the OpenNebula cloud management software is installed on the KTH LCN testbed. The performance of the OpenNebula software was evaluated for different virtual machine operations, virtual machine types, number of virtual machines and change in load of the system. The major lessons learned related to the performance evaluation are: (1) the duration for the live migration does not change with the load; (2) the duration for the live migration increases linearly as the memory assigned to the VM increases; (3) the duration of the add and delete operations increases linearly as the number of VMs increases.
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50

Edmundsson, Niklas. "Scaling a Content Delivery system for Open Source Software." Thesis, Umeå universitet, Institutionen för datavetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-109779.

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This master’s thesis addresses scaling of content distribution sites. In a case study, the thesis investigates issues encountered on ftp.acc.umu.se, a content distribution site run by the Academic Computer Club (ACC) of Umeå University. This site is characterized by the unusual situation of the external network connectivity having higher bandwidth than the components of the system, which differs from the norm of the external connectivity being the limiting factor. To address this imbalance, a caching approach is proposed to architect a system that is able to fully utilize the available network capacity, while still providing a homogeneous resource to the end user. A set of modifications are made to standard open source solutions to make caching perform as required, and results from production deployment of the system are evaluated. In addition, time series analysis and forecasting techniques are introduced as tools to improve the system further, resulting in the implementation of a method to automatically detect bursts and handle load distribution of unusually popular files.
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