Joris Klerkx

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Since IEEE LTSC LOM was published in 2002, it is one of the widest adopted standard for the description of educational resources. The GLOBE (Global Learning Objects Brokered Exchange) alliance enables share and reuse between several Learning Object Repositories worldwide. Being the largest and more diverse collection of Learning Object Metadata, it is an(More)
In this paper, we present work on learning analytics that aims to support learners and teachers through dashboard applications, ranging from small mobile applications to learnscapes on large public displays. Dashboards typically capture and visualize traces of learning activities, in order to promote awareness, reflection, and sense-making, and to enable(More)
The challenge of finding appropriate learning objects is one of the bottlenecks for end users in Learning Object Repositories (LORs). This paper investigates usability problems of search tools for learning objects. We present findings and recommendations of an iterative usability study conducted to examine the usability of a search tool used to find(More)
Learning objects are entities that may be used for learning, education or training. Nowadays they are often stored in learning object repositories (LORs), such as the Ariadne Knowledge Pool System (KPS) as stated in E. Duval et al. (2001), Merlot and EdNa. Typically users can search for learning objects in those LORs by filling out an electronic form that(More)
This paper investigates basic research issues that need to be addressed in order to reuse learning objects in a flexible way. We propose an ontology based approach. Our ontology for learning objects defines content structures and relationships between their components. A conceptual framework for structuring learning objects and their components is(More)
This paper introduces novel ways of improving awareness and reflection through visualizations of badges as an abstraction of learning analytics data. We report initial findings with both a personal dashboard approach, Navi Badgeboard, that provides details on student and class progress, and a collaborative, interactive tabletop visualization, Navi Surface,(More)
In this paper, we present the findings from a field study that quantifies the different engagement phases of an interactive public display: from noticing interactivity and the first reaction to it, to actually interacting with the screen and expressing interest in a campaign. For this purpose, we developed an interactive public display for a real-life(More)
Reusing digital resources for learning has been a goal for several decades, driven by potential time savings and quality enhancements. Although the rapid development of Web-based learning has increased opportunities for reuse significantly, managing learning objects and making them accessible still entails many challenges. This article presents and analyzes(More)
ARIADNE is a European foundation that aims to foster “Share and Reuse” of learning resources. To support this goal, ARIADNE has created an infrastructure for managing learning objects in an open and scalable way. This paper describes the technical approach behind our open, standards based infrastructure, how content providers can connect to it, and the(More)