ABSTRACT Design efforts on innovative IS artifacts are increasingly taking place in agile, small,... more ABSTRACT Design efforts on innovative IS artifacts are increasingly taking place in agile, small, and specialized long-tail communities supported by academic research. Long-tail communities need to reflect and develop awareness for the success of community-specific IS (CIS) artifacts in their particular practice context in an ongoing manner. In community-oriented DSR, researchers participate as active community members contributing CIS success awareness with the help of CIS success models resulting from ongoing CIS evaluation. However, CIS success awareness is challenging to achieve compared to organizational IS due to diversity, dynamicity, informal structures and permeable boundaries. In this paper, we emphasize the benefits of ongoing CIS success awareness with the help of custom-tailored CIS success models in community-oriented DSR contexts. We demonstrate our approach in a longitudinal case study of designing and evaluating therapeutic tools in an aphasia community.
Since Fielding's seminal contribution on the REST architecture style in 2000, the so-called ... more Since Fielding's seminal contribution on the REST architecture style in 2000, the so-called class of RESTful services has taken off to challenge previously existing Web services. Several books have since then emerged, providing a set of valuable guidelines and design principles for the development of truly RESTful services. However, today's most popular” RESTful” services adopt only few of these guidelines, resulting in overburdening developers integrating multiple services in mashup applications. In this paper we present an in-depth ...
In this paper we reflect on the limitations of applying traditional requirements engineering appr... more In this paper we reflect on the limitations of applying traditional requirements engineering approaches to the development of a large-scale PLE infrastructure, which is precisely the aim of a technology-enhanced learning project called ROLE. The Social Requirements Engineering (SRE) approach has been proposed as an appropriate alternative. The SRE process is grounded in an agent-and goal-oriented conceptual model. The implementation of SRE prototypes was structured with a five-staged requirement lifecycle: elicitation, ...
Proceedings of the Third International Conference on Learning Analytics and Knowledge - LAK '13, 2013
ABSTRACT Current learning services are increasingly based on standard Web technologies and concep... more ABSTRACT Current learning services are increasingly based on standard Web technologies and concepts. As by-product of service operation, Web logs capture and contextualize user interactions in a generic manner, in high detail, and on a massive scale. At the same time, we face inventions of data standards for capturing and encoding learner interactions tailored to learning analytics purposes. However, such standards are often focused on institutional and management perspectives or biased by their intended use. In this paper, we argue for Web logs as valuable data sources for learning analytics on all levels of Bronfenbrenner's Ecological System Theory and introduce a simple framework for Web log data enrichment, processing and further analysis. Based on an example data set from a management service for widget-based Personal Learning Environments, we illustrate our approach and discuss the applicability of different analysis techniques along with their particular benefits for learners.
2013 21st IEEE International Requirements Engineering Conference (RE), 2013
ABSTRACT The innovation potential of niche communities often remains inaccessible to service prov... more ABSTRACT The innovation potential of niche communities often remains inaccessible to service providers due to a lack of awareness and effective negotiation between these two groups. Requirements Bazaar, a browser-based social software for Social Requirements Engineering (SRE), aims at bringing together communities and service providers into such a negotiation process. Communities should be supported to express and trace their requirements and eventually receive a realization. Service providers should be supported in discovering relevant innovative requirements to maximize impact with a realization. In this paper we present Requirements Bazaar with focus on four aspects: requirements specification, a workflow for co-creation, workspace integration and personalizable requirements prioritization.
Proceedings of 9th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS’08), May, May 7, 2008
Recent developments in information and communication technology exhibit a rapid increase of web-b... more Recent developments in information and communication technology exhibit a rapid increase of web-based informa-tion systems providing mobile services, especially in the domain of multimedia technology. On top of plain con-tent delivery multimedia metadata standards like ...
Abstract In the recent years more and more people have begun to edit video files, as technologies... more Abstract In the recent years more and more people have begun to edit video files, as technologies are becoming more sophisticated and affordable. Web 2.0 has raised tagging functionality to a growing number of websites such as Flickr and YouTube. However, these services only provide basic video annotation support. In comparison to those well-known services there are many research efforts towards video semantization tools.
Abstract Future multimedia applications in complex domains such as cultural heritage management d... more Abstract Future multimedia applications in complex domains such as cultural heritage management demand the ongoing semantization of multimedia artifacts in communities of practice. These semantization tasks will be realized as web services.
Abstract Storytelling is a natural and effective approach to human communication. The enrichment ... more Abstract Storytelling is a natural and effective approach to human communication. The enrichment of stories using multimedia technologies has been established in knowledge sharing for professional communities since long ago. However, mobile multimedia production and consumption for storytelling raises several issues for mobile data management. We start with a requirements analysis for various application scenarios ranging from business to common life with mobile multimedia storytelling.
Abstract With the advent of mobile smart phones, new types of virtual communities arrived, ie mob... more Abstract With the advent of mobile smart phones, new types of virtual communities arrived, ie mobile communities. Mobile communities, with respect to their IT needs, introduce new requirements compared to traditional online web communities. On the other hand, cloud computing is emerging as computing concept that promises provision of computational resources on demand and abstraction of technical details from the clients.
Abstract Advances in mobile communication technologies lead to a coalescence of location-based, m... more Abstract Advances in mobile communication technologies lead to a coalescence of location-based, multimedia services for user communities. However, easy development and maintenance of device-independent mobile services are still challenging. We have developed a service-oriented framework for mobile multimedia processing based on international standards like MPEG-7. Quality of mobile service experience is constantly monitored in framework.
This workshop and tutorial outlines how software developers can implement services and widgets fo... more This workshop and tutorial outlines how software developers can implement services and widgets for the use in personal learning environments (PLE). Participants will be guided through a scenario explaining the different approaches and technologies developed as part of the ROLE project, enabling them to uptake and use pedagogically relevant information on the one hand, and teaching them how to build responsive and collaborative widgets on the other hand.
ABSTRACT Design efforts on innovative IS artifacts are increasingly taking place in agile, small,... more ABSTRACT Design efforts on innovative IS artifacts are increasingly taking place in agile, small, and specialized long-tail communities supported by academic research. Long-tail communities need to reflect and develop awareness for the success of community-specific IS (CIS) artifacts in their particular practice context in an ongoing manner. In community-oriented DSR, researchers participate as active community members contributing CIS success awareness with the help of CIS success models resulting from ongoing CIS evaluation. However, CIS success awareness is challenging to achieve compared to organizational IS due to diversity, dynamicity, informal structures and permeable boundaries. In this paper, we emphasize the benefits of ongoing CIS success awareness with the help of custom-tailored CIS success models in community-oriented DSR contexts. We demonstrate our approach in a longitudinal case study of designing and evaluating therapeutic tools in an aphasia community.
Since Fielding's seminal contribution on the REST architecture style in 2000, the so-called ... more Since Fielding's seminal contribution on the REST architecture style in 2000, the so-called class of RESTful services has taken off to challenge previously existing Web services. Several books have since then emerged, providing a set of valuable guidelines and design principles for the development of truly RESTful services. However, today's most popular” RESTful” services adopt only few of these guidelines, resulting in overburdening developers integrating multiple services in mashup applications. In this paper we present an in-depth ...
In this paper we reflect on the limitations of applying traditional requirements engineering appr... more In this paper we reflect on the limitations of applying traditional requirements engineering approaches to the development of a large-scale PLE infrastructure, which is precisely the aim of a technology-enhanced learning project called ROLE. The Social Requirements Engineering (SRE) approach has been proposed as an appropriate alternative. The SRE process is grounded in an agent-and goal-oriented conceptual model. The implementation of SRE prototypes was structured with a five-staged requirement lifecycle: elicitation, ...
Proceedings of the Third International Conference on Learning Analytics and Knowledge - LAK '13, 2013
ABSTRACT Current learning services are increasingly based on standard Web technologies and concep... more ABSTRACT Current learning services are increasingly based on standard Web technologies and concepts. As by-product of service operation, Web logs capture and contextualize user interactions in a generic manner, in high detail, and on a massive scale. At the same time, we face inventions of data standards for capturing and encoding learner interactions tailored to learning analytics purposes. However, such standards are often focused on institutional and management perspectives or biased by their intended use. In this paper, we argue for Web logs as valuable data sources for learning analytics on all levels of Bronfenbrenner's Ecological System Theory and introduce a simple framework for Web log data enrichment, processing and further analysis. Based on an example data set from a management service for widget-based Personal Learning Environments, we illustrate our approach and discuss the applicability of different analysis techniques along with their particular benefits for learners.
2013 21st IEEE International Requirements Engineering Conference (RE), 2013
ABSTRACT The innovation potential of niche communities often remains inaccessible to service prov... more ABSTRACT The innovation potential of niche communities often remains inaccessible to service providers due to a lack of awareness and effective negotiation between these two groups. Requirements Bazaar, a browser-based social software for Social Requirements Engineering (SRE), aims at bringing together communities and service providers into such a negotiation process. Communities should be supported to express and trace their requirements and eventually receive a realization. Service providers should be supported in discovering relevant innovative requirements to maximize impact with a realization. In this paper we present Requirements Bazaar with focus on four aspects: requirements specification, a workflow for co-creation, workspace integration and personalizable requirements prioritization.
Proceedings of 9th International Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS’08), May, May 7, 2008
Recent developments in information and communication technology exhibit a rapid increase of web-b... more Recent developments in information and communication technology exhibit a rapid increase of web-based informa-tion systems providing mobile services, especially in the domain of multimedia technology. On top of plain con-tent delivery multimedia metadata standards like ...
Abstract In the recent years more and more people have begun to edit video files, as technologies... more Abstract In the recent years more and more people have begun to edit video files, as technologies are becoming more sophisticated and affordable. Web 2.0 has raised tagging functionality to a growing number of websites such as Flickr and YouTube. However, these services only provide basic video annotation support. In comparison to those well-known services there are many research efforts towards video semantization tools.
Abstract Future multimedia applications in complex domains such as cultural heritage management d... more Abstract Future multimedia applications in complex domains such as cultural heritage management demand the ongoing semantization of multimedia artifacts in communities of practice. These semantization tasks will be realized as web services.
Abstract Storytelling is a natural and effective approach to human communication. The enrichment ... more Abstract Storytelling is a natural and effective approach to human communication. The enrichment of stories using multimedia technologies has been established in knowledge sharing for professional communities since long ago. However, mobile multimedia production and consumption for storytelling raises several issues for mobile data management. We start with a requirements analysis for various application scenarios ranging from business to common life with mobile multimedia storytelling.
Abstract With the advent of mobile smart phones, new types of virtual communities arrived, ie mob... more Abstract With the advent of mobile smart phones, new types of virtual communities arrived, ie mobile communities. Mobile communities, with respect to their IT needs, introduce new requirements compared to traditional online web communities. On the other hand, cloud computing is emerging as computing concept that promises provision of computational resources on demand and abstraction of technical details from the clients.
Abstract Advances in mobile communication technologies lead to a coalescence of location-based, m... more Abstract Advances in mobile communication technologies lead to a coalescence of location-based, multimedia services for user communities. However, easy development and maintenance of device-independent mobile services are still challenging. We have developed a service-oriented framework for mobile multimedia processing based on international standards like MPEG-7. Quality of mobile service experience is constantly monitored in framework.
This workshop and tutorial outlines how software developers can implement services and widgets fo... more This workshop and tutorial outlines how software developers can implement services and widgets for the use in personal learning environments (PLE). Participants will be guided through a scenario explaining the different approaches and technologies developed as part of the ROLE project, enabling them to uptake and use pedagogically relevant information on the one hand, and teaching them how to build responsive and collaborative widgets on the other hand.
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Papers by Dominik Renzel