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  <doc>
    <id>1384</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
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    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>periodicalpart</type>
    <publisherName/>
    <publisherPlace>Regensburg</publisherPlace>
    <creatingCorporation>Ostbayerische Technische Hochschule Regensburg</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
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    <title language="deu">Forschungsbericht 2016</title>
    <identifier type="doi">10.35096/othr/pub-1384</identifier>
    <identifier type="urn">urn:nbn:de:bvb:898-opus4-13840</identifier>
    <author>Wolfgang Mauerer</author>
    <author>Tanja Rexhepaj</author>
    <author>Gareth J. Monkman</author>
    <author>Dirk Sindersberger</author>
    <author>Andreas Diermeier</author>
    <author>Thomas Neidhart</author>
    <author>Dominik Wolfrum</author>
    <author>Michael Sterner</author>
    <author>Michael Heberl</author>
    <author>Robert Nusko</author>
    <author>Georg Maier</author>
    <author>Klaus Nagl</author>
    <author>Monika Reuter</author>
    <author>Andreas Hofrichter</author>
    <author>Thomas Lex</author>
    <author>Florian Lesch</author>
    <author>Bärbel Kieninger</author>
    <author>Alexander Eduard Szalo</author>
    <author>Alexander Zehner</author>
    <author>Christoph Palm</author>
    <author>Mitchell Joblin</author>
    <author>Sven Apel</author>
    <author>Ralf Ramsauer</author>
    <author>Daniel Lohmann</author>
    <author>Markus Westner</author>
    <author>Artur Strasser</author>
    <author>Maximilian Munndi</author>
    <author>Lena Ebner</author>
    <author>Michael Elsner</author>
    <author>Nils Weiß</author>
    <author>Matthias Segerer</author>
    <author>Rudolf Hackenberg</author>
    <author>Sebastian Steger</author>
    <author>Anton Schmailzl</author>
    <author>Michael Dostalek</author>
    <author>Dominik Armbruster</author>
    <author>Fabian Koch</author>
    <author>Stefan Hierl</author>
    <author>Philipp Thumann</author>
    <author>Krzysztof Swidergal</author>
    <author>Marcus Wagner</author>
    <author>Ulrich Briem</author>
    <author>Andreas Diermeier</author>
    <author>Stefan Spreitzer</author>
    <author>Sabrina Beiderbeck</author>
    <author>Christian Hook</author>
    <author>Martin Zobel</author>
    <author>Tim Weber</author>
    <author>Simon Groß</author>
    <author>Rainer Penzkofer</author>
    <author>Sebastian Dendorfer</author>
    <author>Ingo Schillitz</author>
    <author>Thomas Bauer</author>
    <author>Clarissa Rudolph</author>
    <author>Katja Schmidt</author>
    <author>Thomas Liebetruth</author>
    <author>Markus Hamer</author>
    <author>Sonja Haug</author>
    <author>Matthias Vernim</author>
    <author>Karsten Weber</author>
    <author>Sean Patrick Saßmannshausen</author>
    <author>Sebastian Books</author>
    <author>Nikolaus Neuleitner</author>
    <author>Christian Rechenauer</author>
    <author>Oliver Steffens</author>
    <author>Wolfgang Kusterle</author>
    <author>Roland Gömmel</author>
    <author>Felix Wellnitz</author>
    <author>Johannes Stierstorfer</author>
    <author>Dominik Stadler</author>
    <author>Matthias J. Hofmann</author>
    <author>Hubert Motschmann</author>
    <author>Mikhail Shamonin (Chamonine)</author>
    <author>Veronika Bleicher</author>
    <author>Sebastian Fischer</author>
    <author>Rudolf Hackenberg</author>
    <author>Anton Horn</author>
    <author>Raphael Kawasch</author>
    <author>Michael Petzenhauser</author>
    <author>Tobias Probst</author>
    <author>Anton Udalzow</author>
    <author>Florian Dams</author>
    <author>Rupert Schreiner</author>
    <author>Christoph Langer</author>
    <author>Christian Prommesberger</author>
    <author>Robert Damian Ławrowski</author>
    <series>
      <title>Forschungsberichte der OTH Regensburg</title>
      <number>2016</number>
    </series>
    <collection role="institutes" number="HL">Hochschulleitung/Hochschulverwaltung</collection>
    <collection role="othpublikationsherkunft" number="">Von der OTH Regensburg herausgegeben</collection>
    <collection role="persons" number="weberlate">Weber, Karsten (Prof. Dr.) - Labor für Technikfolgenabschätzung und Angewandte Ethik</collection>
    <collection role="institutes" number="IAFW">Zentrum für Forschung und Transfer (ZFT ab 2024; vorher: IAFW)</collection>
    <collection role="persons" number="sternerfenes">Sterner, Michael (Prof. Dr.) - FENES / Forschungsgruppe Energiespeicher</collection>
    <collection role="persons" number="hauglasofo">Haug, Sonja (Prof. Dr.) - Labor Empirische Sozialforschung</collection>
    <thesisPublisher>Ostbayerische Technische Hochschule Regensburg</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-oth-regensburg/files/1384/Forschungsbericht_OTHR_2016.pdf</file>
  </doc>
  <doc>
    <id>3895</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferencepresentation</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Approaches to Ultra Long-Term System Maintenance</title>
    <parentTitle language="eng">Embedded Linux Conference Europe (Berlin), 2016</parentTitle>
    <identifier type="url">https://www.youtube.com/watch?v=SAbrQqSC61M</identifier>
    <author>Wolfgang Mauerer</author>
    <collection role="institutes" number="FakIM">Fakultät Informatik und Mathematik</collection>
    <collection role="othforschungsschwerpunkt" number="16311">Digitalisierung</collection>
    <collection role="institutes" number="">Labor für Digitalisierung (LFD)</collection>
  </doc>
  <doc>
    <id>3894</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferencepresentation</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Socio-Technical Aspects of Long Term Embedded Systems Maintenance</title>
    <parentTitle language="eng">Embedded Linux Conference, April 4-6, 2016, San Diego</parentTitle>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Wolfgang Mauerer</author>
    <collection role="institutes" number="FakIM">Fakultät Informatik und Mathematik</collection>
    <collection role="othforschungsschwerpunkt" number="16311">Digitalisierung</collection>
    <collection role="institutes" number="">Labor für Digitalisierung (LFD)</collection>
  </doc>
  <doc>
    <id>3680</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>4</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>ACM</publisherName>
    <publisherPlace>New York</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Observing Custom Software Modifications: A Quantitative Approach of Tracking the Evolution of Patch Stacks</title>
    <abstract language="deu">Modifications to open-source software (OSS) are often provided in the form of "patch stacks" -- sets of changes (patches) that modify a given body of source code. Maintaining patch stacks over extended periods of time is problematic when the underlying base project changes frequently. This necessitates a continuous and engineering-intensive adaptation of the stack. Nonetheless, long-term maintenance is an important problem for changes that are not integrated into projects, for instance when they are controversial or only of value to a limited group of users.&#13;
&#13;
We present and implement a methodology to systematically examine the temporal evolution of patch stacks, track non-functional properties like integrability and maintainability, and estimate the eventual economic and engineering effort required to successfully develop and maintain patch stacks. Our results provide a basis for quantitative research on patch stacks, including statistical analyses and other methods that lead to actionable advice on the construction and long-term maintenance of custom extensions to OSS.</abstract>
    <parentTitle language="eng">Proceedings of the 12th International Symposium on Open Collaboration (OpenSym '16)</parentTitle>
    <identifier type="doi">10.1145/2957792.2957810</identifier>
    <enrichment key="opus.import.date">2022-04-28T11:11:46+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Ralf Ramsauer</author>
    <author>Daniel Lohmann</author>
    <author>Wolfgang Mauerer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CADOS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>collaboration</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Linux</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>maintenance</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>patch stacks</value>
    </subject>
    <collection role="institutes" number="FakIM">Fakultät Informatik und Mathematik</collection>
    <collection role="othforschungsschwerpunkt" number="16311">Digitalisierung</collection>
    <collection role="institutes" number="">Labor für Digitalisierung (LFD)</collection>
  </doc>
  <doc>
    <id>3897</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">A Virtual Computing Platform for the Internet of Things</title>
    <parentTitle language="deu">Embedded Linux Conference (San Diego), 2016</parentTitle>
    <author>Wolfgang Mauerer</author>
    <collection role="institutes" number="FakIM">Fakultät Informatik und Mathematik</collection>
    <collection role="othforschungsschwerpunkt" number="16311">Digitalisierung</collection>
    <collection role="institutes" number="">Labor für Digitalisierung (LFD)</collection>
  </doc>
  <doc>
    <id>3640</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>2050</pageFirst>
    <pageLast>2094</pageLast>
    <pageNumber/>
    <edition/>
    <issue>4</issue>
    <volume>22</volume>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Evolutionary trends of developer coordination: a network approach</title>
    <abstract language="eng">Software evolution is a fundamental process that transcends the realm of technical artifacts and permeates the entire organizational structure of a software project. By means of a longitudinal empirical study of 18 large open-source projects, we examine and discuss the evolutionary principles that govern the coordination of developers. By applying a network-analytic approach, we found that the implicit and self-organizing structure of developer coordination is ubiquitously described by non-random organizational principles that defy conventional software-engineering wisdom. In particular, we found that: (a) developers form scale-free networks, in which the majority of coordination requirements arise among an extremely small number of developers, (b) developers tend to accumulate coordination requirements with more and more developers over time, presumably limited by an upper bound, and (c) initially developers are hierarchically arranged, but over time, form a hybrid structure, in which core developers are hierarchically arranged and peripheral developers are not. Our results suggest that the organizational structure of large projects is constrained to evolve towards a state that balances the costs and benefits of developer coordination, and the mechanisms used to achieve this state depend on the project’s scale.</abstract>
    <parentTitle language="eng">Empirical Software Engineering</parentTitle>
    <identifier type="doi">10.1007/s10664-016-9478-9</identifier>
    <enrichment key="opus.import.date">2022-04-28T11:07:17+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <licence>Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG</licence>
    <author>Mitchell Joblin</author>
    <author>Sven Apel</author>
    <author>Wolfgang Mauerer</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Developer coordination</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Developer networks</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Software evolution</value>
    </subject>
    <collection role="institutes" number="FakIM">Fakultät Informatik und Mathematik</collection>
    <collection role="othforschungsschwerpunkt" number="16311">Digitalisierung</collection>
    <collection role="institutes" number="">Labor für Digitalisierung (LFD)</collection>
  </doc>
  <doc>
    <id>3639</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>149</pageFirst>
    <pageLast>158</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>8</volume>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>0</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">An Interactive Survey Framework for Validation of Social Network Analysis</title>
    <abstract language="eng">Abstract Social network analysis is extremely well supported by the R community and is routinely used for studying the relationships between people engaged in collaborative activities. While there has been rapid development of new approaches and metrics in this field, the challenging question of validity (how well insights derived from social networks agree with reality) is often difficult to address. We propose the use of several R packages to generate interactive surveys that are specifically well suited for validating social network analyses. Using our web-based survey application, we were able to validate the results of applying community-detection algorithms to infer the organizational structure of software developers contributing to open-source projects.</abstract>
    <parentTitle language="eng">The R Journal</parentTitle>
    <identifier type="url">https://journal.r-project.org/archive/2016/RJ-2016-010/index.html</identifier>
    <enrichment key="opus.import.date">2022-04-28T11:07:17+00:00</enrichment>
    <enrichment key="opus.source">sword</enrichment>
    <enrichment key="opus.import.user">importuser</enrichment>
    <enrichment key="BegutachtungStatus">peer-reviewed</enrichment>
    <enrichment key="opus.doi.autoCreate">false</enrichment>
    <enrichment key="opus.urn.autoCreate">false</enrichment>
    <author>Mitchell Joblin</author>
    <author>Wolfgang Mauerer</author>
    <collection role="institutes" number="FakIM">Fakultät Informatik und Mathematik</collection>
    <collection role="othforschungsschwerpunkt" number="16311">Digitalisierung</collection>
    <collection role="oaweg" number="">Diamond Open Access - OA-Veröffentlichung ohne Publikationskosten (Sponsoring)</collection>
  </doc>
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