<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>13</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Howison, James</style></author><author><style face="normal" font="default" size="100%">Andrea Wiggins</style></author><author><style face="normal" font="default" size="100%">Kevin Crowston</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Validity Issues in the Use of Social Network Analysis with Digital Trace data</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Online Communities</style></keyword><keyword><style  face="normal" font="default" size="100%">social network analysis</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">Submitted</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ifipwg213.org/sites/flosshub.org/files/HowisonSNADigitalTraceData-WorkingPaper.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">FLOSSHub</style></publisher><work-type><style face="normal" font="default" size="100%">Working Paper</style></work-type></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Squire, Megan</style></author><author><style face="normal" font="default" size="100%">Williams, David</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Describing the Software Forge Ecosystem</style></title><secondary-title><style face="normal" font="default" size="100%">45th Hawai'i International Conference on System Sciences</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2012</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">3416-3425</style></pages><abstract><style face="normal" font="default" size="100%">Code forges are online software systems that are designed to support teams doing software development work. There have been few if any attempts in the research literature to describe the web of people, projects, and tools that make up the free, libre, and open source (FLOSS) forge ecosystem. The main contributions of this paper are (1) to introduce a classification of FLOSS-oriented forges according to their characteristics; (2) to describe the forge-level and project-level data and artifacts currently available at each FLOSS forge; (3) to show various patterns already discovered in the FLOSS forge ecosystem, such as timelines of creation or arrangements by size or feature; (4) to make some recommendations to forge providers and data collectors about how to expose the structure and information in the forges; and (5) to describe the effort needed to extend our publicly- available information about the FLOSS forge ecosystem into the future.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Yu, Yiqing</style></author><author><style face="normal" font="default" size="100%">Benlian, Alexander</style></author><author><style face="normal" font="default" size="100%">Hess, Thomas</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Empirical Study of Volunteer Members' Perceived Turnover in Open Source Software Projects</style></title><secondary-title><style face="normal" font="default" size="100%">45th Hawai'i International Conference on System Sciences</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">developers</style></keyword><keyword><style  face="normal" font="default" size="100%">launchpad</style></keyword><keyword><style  face="normal" font="default" size="100%">sourceforge</style></keyword><keyword><style  face="normal" font="default" size="100%">Survey</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2012</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">3396-3405</style></pages><abstract><style face="normal" font="default" size="100%">Turnover of volunteer members and the ensuing instability bring about severe problems to open source software (OSS) projects. To better understand it, we based our study on Herzberg ́s two-factor theory to investigate the influence of hygiene factors on volunteer members ́ dissatisfaction and perceived turnover. After empirically testing the research model, we found shortcomings in project regulation and administration are the key reason for volunteer members ́ dissatisfaction, followed by future rewards and personal needs for software functionalities. By contrast, a possible lack of supportive working relationship among OSS developers was not found to be a trigger for developer dissatisfaction. Dissatisfaction was confirmed to be a significant predictor of perceived turnover. The results demonstrates generalized hygiene factors cannot unreflectively be transferred into the OSS context because volunteer members ́ personal expectation has a weaker influence on perceived turnover than objective attributes of OSS project. Our study further makes suggestions for project administrators.</style></abstract><notes><style face="normal" font="default" size="100%">&quot;After designing the questionnaire, we conducted a web-based survey by inviting developers working in sourceforge.net and launchpad.net.&quot;</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Le, Qize</style></author><author><style face="normal" font="default" size="100%">Panchal, Jitesh H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Network-Based Analysis of the Structure and Evolution of an Open Source Software Product</style></title><secondary-title><style face="normal" font="default" size="100%">45th Hawai'i International Conference on System Sciences</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">drupal</style></keyword><keyword><style  face="normal" font="default" size="100%">source code</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2012</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">3436-3445</style></pages><abstract><style face="normal" font="default" size="100%">In this paper, an analysis of product structures in open source software (OSS) at both product level and module level is presented. At the product level, the product structures are modeled as complex networks, and the evolutionary characteristics of product structures are analyzed by using network analysis metrics. At the module level, linking mechanisms, which describe how a module is attached with other modules, are proposed. The linking mechanisms are modeled as probability functions dependent on the degrees of linking modules. A case study from an open source software project, Drupal, is presented. The evolutionary trends of Drupal product structures are analyzed and discussed. Finally, a model is presented to illustrate the effects of linking mechanisms at the module level on the product structures at the system level. The results indicate that the model built using the proposed linking mechanisms generates networks whose evolutionary characteristics are close to that of the original network.</style></abstract><notes><style face="normal" font="default" size="100%">&quot;raw data about the product structure is extracted from the source code&quot;</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Schilling, A.</style></author><author><style face="normal" font="default" size="100%">Laumer, S.</style></author><author><style face="normal" font="default" size="100%">Weitzel, T.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Who Will Remain? An Evaluation of Actual Person-Job and Person-Team Fit to Predict Developer Retention in FLOSS Projects</style></title><secondary-title><style face="normal" font="default" size="100%">45th Hawai'i International Conference on System Sciences</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">email</style></keyword><keyword><style  face="normal" font="default" size="100%">email archives</style></keyword><keyword><style  face="normal" font="default" size="100%">google summer of code</style></keyword><keyword><style  face="normal" font="default" size="100%">kde</style></keyword><keyword><style  face="normal" font="default" size="100%">mailing list</style></keyword><keyword><style  face="normal" font="default" size="100%">students</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2012</style></year><pub-dates><date><style  face="normal" font="default" size="100%">01/2012</style></date></pub-dates></dates><pages><style face="normal" font="default" size="100%">3446-3455</style></pages><abstract><style face="normal" font="default" size="100%">Many businesses and private households rely on Free Libre Open Source Software (FLOSS). Due to a lack of sustained contributors, however, most FLOSS projects do not survive. The early identification of developers who are likely to remain is thus an eminent challenge for the management of FLOSS initiatives. Previous research has shown that individuals' subjective assessment is often inaccurate emphasizing the need to objectively evaluate retention behavior. Consistent with the concepts Person-Job (P-J) and Person-Team (P-T) fit from the traditional recruitment literature, we derive objective measures to predict developer retention in FLOSS projects. In an analysis of the contribution behavior of former Google Summer of Code (GSoC) students we reveal that the level of development experience and conversational knowledge is strongly associated with retention. Surprisingly, our analysis reveals that students with abilities that are underrepresented in the project and students with a higher academic education do not remain considerably longer.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kevin Crowston</style></author><author><style face="normal" font="default" size="100%">Kangning Wei</style></author><author><style face="normal" font="default" size="100%">Howison, James</style></author><author><style face="normal" font="default" size="100%">Andrea Wiggins</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Free/Libre Open Source Software: What We Know and What We Do Not Know</style></title><secondary-title><style face="normal" font="default" size="100%">ACM Computing Surveys</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2012</style></year></dates><urls><related-urls><url><style face="normal" font="default" size="100%">http://ifipwg213.org/sites/flosshub.org/files/floss_review_paper.pdf</style></url></related-urls></urls><edition><style face="normal" font="default" size="100%">2</style></edition><publisher><style face="normal" font="default" size="100%">ACM</style></publisher><volume><style face="normal" font="default" size="100%">44</style></volume><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">We review the empirical research on Free/Libre Open Source Software (FLOSS) development and assess the state of the literature. Our review is organized around an input-mediator-output-input (IMOI) model. We start with a description of the articles selected for the review. We then discuss findings of this literature categorized into issues pertaining to inputs (e.g., member characteristics, technology use and project characteristics), processes (software development and social processes), emergent states (e.g., trust and task related states) and outputs (e.g. team performance, FLOSS implementation and project evolution). Based on this review, we suggest research questions, including methodological and theoretical issues, to guide future inquiry in this area.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Petrinja, Etiel</style></author><author><style face="normal" font="default" size="100%">Sillitti, Alberto</style></author><author><style face="normal" font="default" size="100%">Succi, Giancarlo</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Adoption of OSS Development Practices by the Software Industry: A Survey</style></title><secondary-title><style face="normal" font="default" size="100%">Open Source Systems: Grounding Research (OSS 2011)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">qualipso</style></keyword><keyword><style  face="normal" font="default" size="100%">Survey</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Springer</style></publisher><pages><style face="normal" font="default" size="100%">233-243</style></pages><abstract><style face="normal" font="default" size="100%">The paper presents a survey of aspects related to the adoption of Open Source Software by the software industry. The aim of this study was to collect data related to practices and elements in the development process of companies that influence the trust in the quality of the product by potential adopters. The work is part of the research done inside the QualiPSo project and was carried out using a qualitative study based on a structured questionnaire focused on perceptions of experts and development practices used by companies involved in the Open Source Software industry. The results of the survey confirm intuitive concerns related to the adoption of Open Source Software as: the selection of the license, the quality issues addressed, and the development process tasks inside Open Source Software projects. The study uncovered specific aspects related to trust and trustworthiness of the Open Source Software development process that we did not find in previous studies as: the standards implemented by the OSS project, the project's roadmap is respected, and the communication channels that are available.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Taylor, Quinn C.</style></author><author><style face="normal" font="default" size="100%">Krein, Jonathan L.</style></author><author><style face="normal" font="default" size="100%">MacLean, Alexander C.</style></author><author><style face="normal" font="default" size="100%">Knutson, Charles D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">An Analysis of Author Contribution Patterns in Eclipse Foundation Project Source Code</style></title><secondary-title><style face="normal" font="default" size="100%">Open Source Systems: Grounding Research (OSS 2011)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">COLLABORATION</style></keyword><keyword><style  face="normal" font="default" size="100%">contribution</style></keyword><keyword><style  face="normal" font="default" size="100%">eclipse</style></keyword><keyword><style  face="normal" font="default" size="100%">entropy</style></keyword><keyword><style  face="normal" font="default" size="100%">java</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Springer</style></publisher><pages><style face="normal" font="default" size="100%">269-281</style></pages><abstract><style face="normal" font="default" size="100%">Collaborative development is a key tenet of open source software, but if not properly understood and managed, it can become a liability. We examine author contribution data for the newest revision of 251,633 Java source files in 592 Eclipse projects. We use this observational data to analyze collaboration patterns within files, and to explore relationships between file size, author count, and code authorship. We calculate author entropy to characterize the contributions of multiple authors to a given file, with an eye toward understanding the degree of collaboration and the most common interaction patterns.</style></abstract><notes><style face="normal" font="default" size="100%">&quot;We conducted an observational study on existing Eclipse projects by extracting author attribution data for Java source code files from git repositories.&quot;

&quot;Specifically, we consider entropy of source code by counting the number of lines attributed to each author.&quot;</style></notes></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Kilamo, Terhi</style></author><author><style face="normal" font="default" size="100%">Hammouda, Imed</style></author><author><style face="normal" font="default" size="100%">Kairamo, Ville</style></author><author><style face="normal" font="default" size="100%">Rasanen, Petri</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Applying Open Source Practices and Principles in Open Innovation: The Case of the Demola Platform</style></title><secondary-title><style face="normal" font="default" size="100%">Open Source Systems: Grounding Research (OSS 2011)</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Springer</style></publisher><pages><style face="normal" font="default" size="100%">307-311</style></pages><abstract><style face="normal" font="default" size="100%">In numerous fields, businesses have to rely on rapid development and release cycles. Variant new ideas and concepts can emerge through open innovation as the participants are not limited to the company scope. This makes open innovation an increasingly appealing option for the industry. One such open innovation platform, Demola, allows university students to work on real life industrial cases of their own interest. We have identified similarities with its way of operation to open source software development and find that it offers a viable motivational, organizational and collaborative solution to open innovation.</style></abstract></record><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Arantes, Flavia Linhalis</style></author><author><style face="normal" font="default" size="100%">Freire, Fernanda Maria Pereira</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Aspects of an Open Source Software Sustainable Life Cycle</style></title><secondary-title><style face="normal" font="default" size="100%">Open Source Systems: Grounding Research (OSS 2011)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Financial Resources</style></keyword><keyword><style  face="normal" font="default" size="100%">OSS Communities</style></keyword><keyword><style  face="normal" font="default" size="100%">OSS Sustainability</style></keyword><keyword><style  face="normal" font="default" size="100%">software maintenance</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2011</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Springer</style></publisher><pages><style face="normal" font="default" size="100%">325-329</style></pages><abstract><style face="normal" font="default" size="100%">In this paper we present a literature overview about OSS sustainability, considering not only financial resources, but also community growth, source code and tools management. Based on these aspects, we define an OSS life cycle that may contribute to OSS projects sustainability.</style></abstract></record></records></xml>
