@proceedings {1903,
	title = {Release Early, Release Often and Release on Time. An Empirical Case Study of Release Management},
	volume = {496},
	year = {2017},
	month = {05/2017},
	pages = {167-181},
	publisher = {Springer},
	abstract = {The dictum of {\textquotedblleft}Release early, release often.{\textquotedblright} by Eric Raymond as the Linux modus operandi highlights the importance of release management in open source software development. Nevertheless, there are very few empirical studies addressing release management in open source software development. It is already known that most open source software communities adopt either feature-based or time-based release strategies. Each of these has its advantages and disadvantages that are context-specific. Recent research reported that many prominent open source software projects have moved from feature-based to time-based releases. In this longitudinal case study, we narrate how OpenStack shifted towards a liberal six-month release cycle. If prior research discussed why projects should adopt time-based releases and how they can adopt such a strategy, we discuss how OpenStack adapted its software development processes, its organizational design and its tools toward a hybrid release management strategy {\textemdash} a strive for balancing the benefits and drawbacks of feature-based and time-based release strategies.},
	keywords = {openstack, release management},
	doi = {10.1007/978-3-319-57735-7_16},
	url = {https://link.springer.com/chapter/10.1007/978-3-319-57735-7_16},
	author = {Teixeira, Jose}
}
@booklet {1781,
	title = {Lessons Learned from Applying Social Network Analysis on an Industrial Free/Libre/Open Source Software Ecosystem},
	year = {2015},
	abstract = {Many software projects are no longer done in-house by a single organization. Instead, we are in a new age where software is developed by a networked community of individuals and organizations, which base their relations to each other on mutual interest. Paradoxically, recent research suggests that software development can actually be jointly-developed by rival firms. For instance, it is known that the mobile-device makers Apple and Samsung kept collaborating in open source projects while running expensive patent wars in the court. Taking a case study approach, we explore how rival firms collaborate in the open source arena by employing a multi-method approach that combines qualitative analysis of archival data (QA) with mining software repositories (MSR) and Social Network Analysis (SNA). While exploring collaborative processes within the OpenStack ecosystem, our research contributes to Software Engineering research by exploring the role of groups, sub-communities and business models within a high-networked open source ecosystem. Surprising results point out that competition for the same revenue model (i.e., operating conflicting business models) does not necessary affect collaboration within the ecosystem. Moreover, while detecting the different sub-communities of the OpenStack community, we found out that the expected social tendency of developers to work with developers from same firm (i.e., homophony) did not hold within the OpenStack ecosystem. Furthermore, while addressing a novel, complex and unexplored open source case, this research also contributes to the management literature in coopetition strategy and high-tech entrepreneurship with a rich description on how heterogeneous actors within a high-networked ecosystem (involving individuals, startups, established firms and public organizations) joint-develop a complex infrastructure for big-data in the open source arena.},
	keywords = {business models, cloud computing, homophily, open source, Open-Coopetition, openstack, social network analysis, Software ecosystems},
	url = {http://arxiv.org/abs/1507.04587},
	author = {Teixeira, Jose and Gregorio Robles and Jesus M. Gonzalez-Barahona}
}
@proceedings {1787,
	title = {On the openness of digital platforms/ecosystems},
	year = {2015},
	month = {08/2015},
	abstract = {A plenitude of technology is neither developed in-house nor
simply outsourced in dyadic relationships. Instead, we are in
a new age where technologies are developed by a networked
community of actors and organizations, which base their
relations dynamically to each other on a common interest.
Such dynamic and networked complexity of technology development
is often theoretical explored around the concept
of platform, and more recently by employing the concept of
ecosystem in an analogy to natural ecosystems. Following the
success of open-source software, academics have long been
examining openness in digital platforms/ecosystems; however
most contributions take the perspective of a single stakeholder
from the many that constitute a digital platform/ecosystem.
Predominantly, they take the sole perspective of platform
providers, those bundling hardware and software or more
rarely, the perspective of third-party software developers developing
valuable software {\textquoteright}apps{\textquoteright} that add value to the overall
platform. In this conceptual article, we grasp openness more
holistically, both by acknowledging that openness means different
things to different people and involve all stakeholders
within the platforms/ecosystems. Towards the development
of a theory of openness within digital settings, we propose
six novel aspects of openness for enabling a greater understanding
of the open-source software movement with a digital
platforms/ecosystems perspective. Moreover, we invite scholars
to reconsider the more predominating product-dominant
logic in open-source software research to a more holistic logic
embracing platforms and ecosystem thinking.},
	url = {http://www.opensym.org/os2015/proceedings-files/p103-teixeira.pdf},
	attachments = {https://flosshub.org/sites/flosshub.org/files/p103-teixeira.pdf},
	author = {Teixeira, Jose}
}
@inbook {1605,
	title = {Crafting a Systematic Literature Review on Open-Source Platforms},
	booktitle = {Open Source Software: Mobile Open Source Technologies},
	series = {IFIP Advances in Information and Communication Technology},
	volume = {427},
	year = {2014},
	pages = {113-122},
	publisher = {Springer Berlin Heidelberg},
	organization = {Springer Berlin Heidelberg},
	abstract = {

This working paper unveils the crafting of a systematic literature review on open-source platforms. The high-competitive mobile devices market, where several players such as Apple, Google, Nokia and Microsoft run a platforms- war with constant shifts in their technological strategies, is gaining increasing attention from scholars. It matters, then, to review previous literature on past platforms-wars, such as the ones from the PC and game-console industries, and assess its implications to the current mobile devices platforms-war. The paper starts by justifying the purpose and rationale behind this literature review on open-source platforms. The concepts of open-source software and computer-based platforms were then discussed both individually and in unison, in order to clarify the core-concept of {\textquotedblleft}open-source platform{\textquotedblright} that guides this literature review. The detailed design of the employed methodological strategy is then presented as the central part of this paper. The paper concludes with preliminary findings organizing previous literature on open-source platforms for the purpose of guiding future research in this area.
},
	keywords = {Ecosystems, FLOSS, open-source, Platforms, R\&D Management},
	isbn = {978-3-642-55127-7},
	doi = {10.1007/978-3-642-55128-4_16},
	url = {http://dx.doi.org/10.1007/978-3-642-55128-4_16},
	author = {Teixeira, Jose and Baiyere, Abayomi},
	editor = {Corral, Luis and Sillitti, Alberto and Succi, Giancarlo and Vlasenko, Jelena and Wasserman, AnthonyI.}
}
@inbook {1599,
	title = {Open-Source Software Entrepreneurial Business Modelling},
	booktitle = {Open Source Software: Mobile Open Source Technologies},
	series = {IFIP Advances in Information and Communication Technology},
	volume = {427},
	year = {2014},
	pages = {80-82},
	publisher = {Springer Berlin Heidelberg},
	organization = {Springer Berlin Heidelberg},
	abstract = {

This poster aims to facilitate business planning of bootstrapping entrepreneurs who are developing a high-tech business by open-source approach. It draws on scholarly works on business modelling and open-source software to provide a practical tool for entrepreneurs establishing a business by open-source approach. Built on top of established business modelling frameworks, the Open-Source Software Entrepreneurial Business Modelling (OSS_EBM) can be a useful strategic management and entrepreneurial tool. It enables strategists and entrepreneurs to describe, design, challenge, invent, brainstorm, pivot, analyze and improve upon open-source business models.
},
	isbn = {978-3-642-55127-7},
	doi = {10.1007/978-3-642-55128-4_10},
	url = {http://dx.doi.org/10.1007/978-3-642-55128-4_10},
	author = {Teixeira, Jose and Salminen, Joni},
	editor = {Corral, Luis and Sillitti, Alberto and Succi, Giancarlo and Vlasenko, Jelena and Wasserman, AnthonyI.}
}
@conference {Teixeira:2014:UCO:2641580.2641627,
	title = {Understanding Coopetition in the Open-Source Arena: The Cases of WebKit and OpenStack},
	booktitle = {Proceedings of The International Symposium on Open Collaboration},
	series = {OpenSym {\textquoteright}14},
	year = {2014},
	pages = {39:1{\textendash}39:5},
	publisher = {ACM},
	organization = {ACM},
	address = {New York, NY, USA},
	abstract = {In an era of software crisis, the move of firms towards distributed software development teams is being challenged by emerging collaboration issues. On this matter, the open-source phenomenon may shed some light, as successful cases on distributed collaboration in the open-source community have been recurrently reported. In our research we explore collaboration networks in the WebKit and OpenStack high-networked open-source projects, by mining their source-code version-control-systems data with Social Network Analysis (SNA). Our approach allows us to observe how key events in the industry affect open-source collaboration networks over time. With our findings, we highlight the explanatory power from network visualizations capturing the collaborative dynamics of high-networked software projects over time. Moreover, we argue that competing companies that sell similar products in the same market, can collaborate in the open-source community while publicly manifesting intense rivalry (e.g. Apple vs Samsung patent-wars). After integrating our findings with the current body of theoretical knowledge in management strategy, economics, strategic alliances and coopetition, we propose the novel notion of open-coopetition, where rival firms collaborate with competitors in the open-source community. We argue that classical coopetition management theories do not fully explain the competitive and collaborative issues that are simultaneously present and interconnected in the WebKit and OpenStack open-source communities. We propose the development of the novel open-coopetition theory for a better understanding on how rival-firms collaborate with competitors by open-source manners.
},
	keywords = {COLLABORATION, Competition, Coopetition, Ecosystems, FLOSS, Open-Coopetition, open-source, OSS, Strategic Alliances},
	isbn = {978-1-4503-3016-9},
	doi = {10.1145/2641580.2641627},
	url = {http://doi.acm.org/10.1145/2641580.2641627},
	author = {Teixeira, Jose}
}
@proceedings {1455,
	title = {Open-Source Technologies Realizing Social Networks: A Multiple Descriptive Case-Study},
	volume = {378},
	year = {2012},
	month = {09/2012},
	pages = {250-255},
	publisher = {IFIP AICT,  Springer},
	abstract = {This article aims at describing the role of the open-source software phenomenon within high-tech corporations providing social networks and applications. By taking a multiple case study approach, We address what are the open-source software technological components embedded by leading social networking players, and a rich description on how those players collaborate with the open-source community. Our findings, based on a population of three commercial providers of social networks a suggest that open-source plays an important role on the technological development of their social networking platforms. An open-source technological stack for realizing social networks is proposed and several managerial issues dealing with collaboration with open-source communities are explored.},
	keywords = {entrepreneurship, facebook, netlog, social networks, spotify},
	author = {Teixeira, Jose}
}
