Das Ganze ist mehr als die Summe seiner Teile. Aristoteles Diese Dissertation ist die Summe viele... more Das Ganze ist mehr als die Summe seiner Teile. Aristoteles Diese Dissertation ist die Summe vieler Teile. Bei der Komposition dieser Teile konnte ich jedoch noch viel mehr erreichen. Ich konnte Wissen schaffen, Erfahrungen sammeln und Ideen ausprobieren. Ich konnte Menschen kennenlernen, mit diesen zusammenarbeiten und Freundschaften schließen. Dafür möchte ich mich bedanken. Zu Beginn möchte ich mich bei meinen Betreuern bedanken, insbesondere bei Professor Wolfgang Prinz, PhD, der mir das Forschungsgebiet CSCW & Social Computing näher gebracht hat und mit dem ich die Begeisterung dafür teile. Der Dank gilt auch meinen Gutachtern Professor Dr. Matthias Jarke und Professor Dr. Michael Koch für ihr Feedback insbesondere in der letzten Phase meiner Promotion. Bedanken möchte ich mich auch bei meinen Kollegen und Freunden, mit denen ich zusammenarbeiten durfte und die mich mit Rat und Tat unterstützt haben. Namentlich sind dies in alphabetischer Reihenfolge:
Since its launch just over a decade ago by the cryptocurrency Bitcoin, the distributed ledger tec... more Since its launch just over a decade ago by the cryptocurrency Bitcoin, the distributed ledger technology (DLT) blockchain has followed a breathtaking trajectory into manifold application spaces. This study aper analyses how key factors underpinning the success of this ground-breaking “Internet of value” technology, such as staking of collateral (“skin in the game”), competitive crowdsourcing, crowdfunding, and prediction markets, can be applied to substantially innovate the legacy organization of science, research, and technology development (RTD). Here, we elaborate a highly integrative, community-based strategy where a token-based crypto-economy supports finding best possible consensus, trust, and truth by adding unconventional elements known from reputation systems, betting, secondary markets, and social networking. These tokens support the holder’s formalized reputation and are used in liquid-democracy style governance and arbitration within projects or community-driven initiati...
The main challenge addressed by the EU-funded project CloudTeams is bridging the communication an... more The main challenge addressed by the EU-funded project CloudTeams is bridging the communication and collaboration gap between software developers and end users during the whole software development process in order to develop better accepted software. CloudTeams solves the problem by bringing together software developers and end users into one platform, thus providing a seamless environment where interaction with customers will feel natural and will validate the software product. It integrates popular software development tools and services and mashes them up with user participation practices. A sustainable community of end users provides feedback to the development teams at any stage of the software development cycle, from idea generation to beta testing. Through the introduction of novel collaboration and engagement methodologies, CloudTeams facilitates the development process and delivers Software-as-a-Service offerings, which are tested and verified with customers. In this paper we present the CloudTeams approach and the results of the first round of face-to-face interviews with stakeholders of the two user groups on the underlying challenges related to CloudTeams.
Zusammenfassung Das im vorliegenden Text beschriebene persuasive System soll Menschen davon überz... more Zusammenfassung Das im vorliegenden Text beschriebene persuasive System soll Menschen davon überzeugen, ihr Trinkverhalten zu ändern. Anhand eines ersten Prototyps wurde getestet, ob eine einfache Rückmeldung über die täglich aufgenommene Menge an Flüssigkeit ausreicht. Erste Tests gaben Hinweise darauf, dass die Installation des Systems bei jedem Nutzer zu einer Auseinandersetzung mit dem Thema führte. Zumindest kurzfristig war bei allen Probanden eine Änderung zu erkennen. Nach einer gewissen Zeit schien sich ein Großteil der Testpersonen jedoch an das System zu gewöhnen. Die direkte Wirkung des Systems ging zurück. Eine einfache Darstellung der Tagesaufnahme an Flüssigkeit, scheint in diesem Zusammenhang, langfristig keinen direkten Einfluss nehmen zu können.
This paper introduces the topic of “Collaborative Distance” within Distributed Collaboration as b... more This paper introduces the topic of “Collaborative Distance” within Distributed Collaboration as being an introduction to this Special Issue on Collaborative Working Environments1 (CWE). In this paper, the authors discuss various related concepts, identified during an extensive literature review, on both proximity and distance in distributed collaboration. Then, a Collaborative Distance Framework (CDF) is proposed in deriving its four dimensions and related factors from the existing body of knowledge. The following section discusses the interest of such a CDF and introduces the articles published in this special issue. The concluding section discusses the articles’ contributions, limitations and future work as well as recommendations for future research in this area.
... to Monika Biischer and Preben Mogensen, colleagues at Lancaster University, for heroic labour... more ... to Monika Biischer and Preben Mogensen, colleagues at Lancaster University, for heroic labours in preparing the index and in producing the camera-ready copy. If it wasn't for them, this book would never have been finished. Those of us who attended the Scharding workshop ...
... FacetBrowse: Facettenbasiertes Browsen im Groupware Kontext Sebastian Franken, Wolfgang Prinz... more ... FacetBrowse: Facettenbasiertes Browsen im Groupware Kontext Sebastian Franken, Wolfgang Prinz RWTH Aachen, Fraunhofer FIT ... Dabei wurden ua die koope-rativen Aktivitäten einer Gruppe als Facetten genutzt (Seeling et al. 2007). ...
Many groupware applications use hierarchical file systems, cloud storage or shared desktop operat... more Many groupware applications use hierarchical file systems, cloud storage or shared desktop operating system disks to support the cooperative development of shared artefacts or to share information. In these collaboration scenarios, often file synchronizers assist users in the data management across multiple devices. They establish consistency between file systems, even in light of their heterogeneity. However, the development of file synchronizers is difficult due to the fact that mainstream operating systems were not primarily built for cooperation or synchronization scenarios. Further, synchronizers need to address heterogeneity, by translating semantical differences and considering cross-device and cross-file system incompatibilities. This paper provides an in-depth analysis of six file system capabilities relevant to shared data synchronizers, such as mapping from namespace to physically stored objects, supported object types, namespace limitations or locking mechanisms. For each capability we derive commonalities for a set of selected file systems and also provide advice for handling incompatibilities. The insights of this work provide useful concepts and guidance for groupware developers that aim for a better user experience in synchronization support.
Proceedings of the 4th International Workshop on Pattern Recognition in Information Systems, 2004
Decision management and decision support systems are themes under investigation for several decad... more Decision management and decision support systems are themes under investigation for several decades, and both research areas provided contributions for the quality of decision making processes. However, little work has been done in the aerea of decision follow-up, especially regarding decisions made during meetings. In this paper we analyse the concepts related to this problem and we propose a solution based on mechanisms supported by computer to assist the formalization of meeting outcomes, and to provide decision follow-up.
Several collaborative search systems build upon real-time collaboration during search processes. ... more Several collaborative search systems build upon real-time collaboration during search processes. With the software SearchTrails, we present a novel way of capturing and exchanging the search process between collaborators. We achieve this by asynchronously exchanging the newly developed search trails between collaborators and thus overcome the necessity of real-time interaction for search support. In a study with 29 participants, we evaluate the value of search trails as collaboration artifacts to answer the research question whether search trails improve the quality of collaborative search results. We confirm this and show that users can build upon work of co-searchers in a very efficient way by analyzing and extending the given search trails.
Proceedings of the international ACM SIGGROUP conference on Supporting group work : the integration challenge the integration challenge - GROUP '97, 1997
This paper presents a hybrid approach for the support of workflows in a ministerial environment t... more This paper presents a hybrid approach for the support of workflows in a ministerial environment that integrates a Web-based interface into a groupware platform. A scenario of the application area is examined to identify the basic requirements for an adequate user support. The basic PoLffeam approach for the support of workflows by electronic circulation folders is introduced. Focal point of the paper is the design of the Web-based interface for the interaction with electronic circulation folders and its seamless integration into the groupware platform.
Users tend to share search results such as links or excerpts from web pages when performing compl... more Users tend to share search results such as links or excerpts from web pages when performing complex search tasks. We developed a system called SearchTrails that enables sharing of complete search logs in the form of directed graphs, resembling the users' trails through the Internet. We conducted a study with 29 participants in which we used both written reports and search trails as collaboration artifacts. We researched the value of search trails as artifacts for collaborative search compared to written reports. We did this by evaluating the user experience (UX) with both artifacts. By evaluating a user experience questionnaire (UEQ), we can confirm that search trails can support collaborative search better than written reports containing the essential information of the search trails.
IFIP Advances in Information and Communication Technology, 2009
Although a number of new collaboration systems emerged of the last years, it is remarkable that e... more Although a number of new collaboration systems emerged of the last years, it is remarkable that email is still the most used collaboration application. However, this messaging based pattern of organizing collaboration causes a lot of problems like information and attachment overload and versioning problems. This paper discusses some of these problems as well as reasons why users are reluctant to switch to alternative cooperation means like document sharing in virtual project environments. Based on these observations we present tools developed with the EU funded Ecospace project that address these issue. These tools simplify the sharing process by combining and integrating sharing functionality with messaging, thus reducing the functional and cognitive distance between both environments.
This paper presents a framework for asynchronous awareness. Awareness tools are potentially power... more This paper presents a framework for asynchronous awareness. Awareness tools are potentially powerful for the support of long-term team collaboration processes. In this paper we outline the particularities of long-term awareness and introduce stories as a means to present awareness information. We show different approaches to present awareness stories and describe the results of our laboratory user testing.
In this paper we present a new workflow allowing the creation of 3D characters in an automated wa... more In this paper we present a new workflow allowing the creation of 3D characters in an automated way that does not require the expertise of an animator. This workflow is based of the acquisition of real human data captured by 3D body scanners, which is them processed to generate firstly animatable body meshes, secondly skinned body meshes and finally textured 3D garments.
Das Ganze ist mehr als die Summe seiner Teile. Aristoteles Diese Dissertation ist die Summe viele... more Das Ganze ist mehr als die Summe seiner Teile. Aristoteles Diese Dissertation ist die Summe vieler Teile. Bei der Komposition dieser Teile konnte ich jedoch noch viel mehr erreichen. Ich konnte Wissen schaffen, Erfahrungen sammeln und Ideen ausprobieren. Ich konnte Menschen kennenlernen, mit diesen zusammenarbeiten und Freundschaften schließen. Dafür möchte ich mich bedanken. Zu Beginn möchte ich mich bei meinen Betreuern bedanken, insbesondere bei Professor Wolfgang Prinz, PhD, der mir das Forschungsgebiet CSCW & Social Computing näher gebracht hat und mit dem ich die Begeisterung dafür teile. Der Dank gilt auch meinen Gutachtern Professor Dr. Matthias Jarke und Professor Dr. Michael Koch für ihr Feedback insbesondere in der letzten Phase meiner Promotion. Bedanken möchte ich mich auch bei meinen Kollegen und Freunden, mit denen ich zusammenarbeiten durfte und die mich mit Rat und Tat unterstützt haben. Namentlich sind dies in alphabetischer Reihenfolge:
Since its launch just over a decade ago by the cryptocurrency Bitcoin, the distributed ledger tec... more Since its launch just over a decade ago by the cryptocurrency Bitcoin, the distributed ledger technology (DLT) blockchain has followed a breathtaking trajectory into manifold application spaces. This study aper analyses how key factors underpinning the success of this ground-breaking “Internet of value” technology, such as staking of collateral (“skin in the game”), competitive crowdsourcing, crowdfunding, and prediction markets, can be applied to substantially innovate the legacy organization of science, research, and technology development (RTD). Here, we elaborate a highly integrative, community-based strategy where a token-based crypto-economy supports finding best possible consensus, trust, and truth by adding unconventional elements known from reputation systems, betting, secondary markets, and social networking. These tokens support the holder’s formalized reputation and are used in liquid-democracy style governance and arbitration within projects or community-driven initiati...
The main challenge addressed by the EU-funded project CloudTeams is bridging the communication an... more The main challenge addressed by the EU-funded project CloudTeams is bridging the communication and collaboration gap between software developers and end users during the whole software development process in order to develop better accepted software. CloudTeams solves the problem by bringing together software developers and end users into one platform, thus providing a seamless environment where interaction with customers will feel natural and will validate the software product. It integrates popular software development tools and services and mashes them up with user participation practices. A sustainable community of end users provides feedback to the development teams at any stage of the software development cycle, from idea generation to beta testing. Through the introduction of novel collaboration and engagement methodologies, CloudTeams facilitates the development process and delivers Software-as-a-Service offerings, which are tested and verified with customers. In this paper we present the CloudTeams approach and the results of the first round of face-to-face interviews with stakeholders of the two user groups on the underlying challenges related to CloudTeams.
Zusammenfassung Das im vorliegenden Text beschriebene persuasive System soll Menschen davon überz... more Zusammenfassung Das im vorliegenden Text beschriebene persuasive System soll Menschen davon überzeugen, ihr Trinkverhalten zu ändern. Anhand eines ersten Prototyps wurde getestet, ob eine einfache Rückmeldung über die täglich aufgenommene Menge an Flüssigkeit ausreicht. Erste Tests gaben Hinweise darauf, dass die Installation des Systems bei jedem Nutzer zu einer Auseinandersetzung mit dem Thema führte. Zumindest kurzfristig war bei allen Probanden eine Änderung zu erkennen. Nach einer gewissen Zeit schien sich ein Großteil der Testpersonen jedoch an das System zu gewöhnen. Die direkte Wirkung des Systems ging zurück. Eine einfache Darstellung der Tagesaufnahme an Flüssigkeit, scheint in diesem Zusammenhang, langfristig keinen direkten Einfluss nehmen zu können.
This paper introduces the topic of “Collaborative Distance” within Distributed Collaboration as b... more This paper introduces the topic of “Collaborative Distance” within Distributed Collaboration as being an introduction to this Special Issue on Collaborative Working Environments1 (CWE). In this paper, the authors discuss various related concepts, identified during an extensive literature review, on both proximity and distance in distributed collaboration. Then, a Collaborative Distance Framework (CDF) is proposed in deriving its four dimensions and related factors from the existing body of knowledge. The following section discusses the interest of such a CDF and introduces the articles published in this special issue. The concluding section discusses the articles’ contributions, limitations and future work as well as recommendations for future research in this area.
... to Monika Biischer and Preben Mogensen, colleagues at Lancaster University, for heroic labour... more ... to Monika Biischer and Preben Mogensen, colleagues at Lancaster University, for heroic labours in preparing the index and in producing the camera-ready copy. If it wasn't for them, this book would never have been finished. Those of us who attended the Scharding workshop ...
... FacetBrowse: Facettenbasiertes Browsen im Groupware Kontext Sebastian Franken, Wolfgang Prinz... more ... FacetBrowse: Facettenbasiertes Browsen im Groupware Kontext Sebastian Franken, Wolfgang Prinz RWTH Aachen, Fraunhofer FIT ... Dabei wurden ua die koope-rativen Aktivitäten einer Gruppe als Facetten genutzt (Seeling et al. 2007). ...
Many groupware applications use hierarchical file systems, cloud storage or shared desktop operat... more Many groupware applications use hierarchical file systems, cloud storage or shared desktop operating system disks to support the cooperative development of shared artefacts or to share information. In these collaboration scenarios, often file synchronizers assist users in the data management across multiple devices. They establish consistency between file systems, even in light of their heterogeneity. However, the development of file synchronizers is difficult due to the fact that mainstream operating systems were not primarily built for cooperation or synchronization scenarios. Further, synchronizers need to address heterogeneity, by translating semantical differences and considering cross-device and cross-file system incompatibilities. This paper provides an in-depth analysis of six file system capabilities relevant to shared data synchronizers, such as mapping from namespace to physically stored objects, supported object types, namespace limitations or locking mechanisms. For each capability we derive commonalities for a set of selected file systems and also provide advice for handling incompatibilities. The insights of this work provide useful concepts and guidance for groupware developers that aim for a better user experience in synchronization support.
Proceedings of the 4th International Workshop on Pattern Recognition in Information Systems, 2004
Decision management and decision support systems are themes under investigation for several decad... more Decision management and decision support systems are themes under investigation for several decades, and both research areas provided contributions for the quality of decision making processes. However, little work has been done in the aerea of decision follow-up, especially regarding decisions made during meetings. In this paper we analyse the concepts related to this problem and we propose a solution based on mechanisms supported by computer to assist the formalization of meeting outcomes, and to provide decision follow-up.
Several collaborative search systems build upon real-time collaboration during search processes. ... more Several collaborative search systems build upon real-time collaboration during search processes. With the software SearchTrails, we present a novel way of capturing and exchanging the search process between collaborators. We achieve this by asynchronously exchanging the newly developed search trails between collaborators and thus overcome the necessity of real-time interaction for search support. In a study with 29 participants, we evaluate the value of search trails as collaboration artifacts to answer the research question whether search trails improve the quality of collaborative search results. We confirm this and show that users can build upon work of co-searchers in a very efficient way by analyzing and extending the given search trails.
Proceedings of the international ACM SIGGROUP conference on Supporting group work : the integration challenge the integration challenge - GROUP '97, 1997
This paper presents a hybrid approach for the support of workflows in a ministerial environment t... more This paper presents a hybrid approach for the support of workflows in a ministerial environment that integrates a Web-based interface into a groupware platform. A scenario of the application area is examined to identify the basic requirements for an adequate user support. The basic PoLffeam approach for the support of workflows by electronic circulation folders is introduced. Focal point of the paper is the design of the Web-based interface for the interaction with electronic circulation folders and its seamless integration into the groupware platform.
Users tend to share search results such as links or excerpts from web pages when performing compl... more Users tend to share search results such as links or excerpts from web pages when performing complex search tasks. We developed a system called SearchTrails that enables sharing of complete search logs in the form of directed graphs, resembling the users' trails through the Internet. We conducted a study with 29 participants in which we used both written reports and search trails as collaboration artifacts. We researched the value of search trails as artifacts for collaborative search compared to written reports. We did this by evaluating the user experience (UX) with both artifacts. By evaluating a user experience questionnaire (UEQ), we can confirm that search trails can support collaborative search better than written reports containing the essential information of the search trails.
IFIP Advances in Information and Communication Technology, 2009
Although a number of new collaboration systems emerged of the last years, it is remarkable that e... more Although a number of new collaboration systems emerged of the last years, it is remarkable that email is still the most used collaboration application. However, this messaging based pattern of organizing collaboration causes a lot of problems like information and attachment overload and versioning problems. This paper discusses some of these problems as well as reasons why users are reluctant to switch to alternative cooperation means like document sharing in virtual project environments. Based on these observations we present tools developed with the EU funded Ecospace project that address these issue. These tools simplify the sharing process by combining and integrating sharing functionality with messaging, thus reducing the functional and cognitive distance between both environments.
This paper presents a framework for asynchronous awareness. Awareness tools are potentially power... more This paper presents a framework for asynchronous awareness. Awareness tools are potentially powerful for the support of long-term team collaboration processes. In this paper we outline the particularities of long-term awareness and introduce stories as a means to present awareness information. We show different approaches to present awareness stories and describe the results of our laboratory user testing.
In this paper we present a new workflow allowing the creation of 3D characters in an automated wa... more In this paper we present a new workflow allowing the creation of 3D characters in an automated way that does not require the expertise of an animator. This workflow is based of the acquisition of real human data captured by 3D body scanners, which is them processed to generate firstly animatable body meshes, secondly skinned body meshes and finally textured 3D garments.
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Papers by Wolfgang Prinz