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Journals Conferences Reports
Zlotnikova, I.Y. and Weide, Th.P. van der, An Approach to Modeling ICT Educational Policies in African Countries. International Journal of Education and Development using ICT (IJEDICT), Vol 7, Issue 3, December 2011
This paper aims at creating a model of an ICT educational policy. The geographic scope of the study includes countries of sub-Saharan Africa. First, the components of an ICT educational policy have been identified. Second, country-related parameters have been identified based on available sources of the statistical information. Third, the links between the components of ICT educational policy and the country-related influential parameters have been established. These components, the influential parameters and the links established make the model of an ICT educational policy. Then the proposed model has been elaborated using the data-mining technique called Formal Concept Analysis. We propose two applications that are benefiting from the resulting concept lattice. Finally, a simple validation of the proposed model has been done by establishing taxonomy of sub-Saharan African countries. This research provides a framework for developing and improving ICT educational policies in these countries, as well as a tool for evaluation of ongoing ICT educational projects and success forecasting of future projects. Potential users of the results of this research include policymakers and practitioners involved in ICT educational projects.
Ngobye, M. and Weide, Th.P. van der and Groot, W.T. de, An Approach for Agent Based Modeling of an Ecosystem Using AiC +. International Journal of Computing and ICT Research, Vol. 5, Special Issue, December 2011
In this paper, we present the AiC + an extension of the AiC framework designed for the explanation of human actions especially in the environmental field. We use first order logics to describe the semantics used to explain the action selection of the agent(actor) using an agent hierarchy system and a fuzzy typing relation. An example is illustrated using the AiC + to validate the framework and discuss possible future extensions to the framework.
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Omona, W. and Weide, Th.P. van der and Lubega, J.T., Knowledge Management Technologies and Higher Education Processes: Approach to Integration for Performance Improvement. International Journal of Computing and ICT Research, Vol. 5, Special Issue, December 2011, pp 58-69
The adoption and use of technology to support higher education processes has been increasingly affected by knowledge management (KM), learning technologies and emerging support tools for performance improvement. To achieve their goals, higher education institutions must endeavor to align operational processes and organizational learning with KM technology solutions to create a performance improvement environment that strategically leverages KM technologies with higher education processe. Drawing from the concepts based on processes reengineering in higher education, task technology fit theory and an integrative learning and performance architecture to form the basis for defining our approach, this paper proposes a theoretical approach for integrating KM technologies in higher education processes with a view to achieving improved service deliveries and sustained competitive advantages. By using the reflections from the above concepts to show the links between KM technologies, higher education processes and performance improvement, this paper does not only give guidance for integration of KM technologies in higher education processes, but also act as a catalyst for optimizing higher education process modeling development.
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Alao, O.D. and Awodele, O. and Baguma, R. and Weide, Th.P. van der, Cultural Issues and Their Relevance in Designing Usable Websites. International Journal of Computer Science & Emerging Technologies, Issue Vol.1 No.2, February 2011
The adoption and use of ICT to enhance and facilitate Knowledge Management (KM) has brought to focus the urgent need to come out with new methods, tools and techniques in the development of KM systems frameworks, knowledge processes and knowledge technologies to promote effective management of knowledge for improved service deliveries in higher education. To succeed in KM, higher education institutions must endeavor to effectively link KM initiatives and processes with their ever-changing needs to advance their goals. Addressing these challenges call for a new conceptual framework and expanded research agenda to ensure success in the utilization of ICT in KM. Using the synergies from Stankosky's (2005) KM pillar for enterprise learning together with the task/technology fit theory (Goodhue and Thompson, 1995) to form the basis for defining our approach, this paper proposes a conceptual framework for using ICT to enhance KM in higher education. In addition, the paper identifies several research issues to bridge the gap that currently exists between the requirements of theory building and testing to address the different emerging challenges in using ICT to enhance KM in higher education.
Journals Conferences Reports
Tegegne, T. and Kanagwa, B. and Weide, Th.P. van der, User Profile Based Service Discovery. ICSOFT 2011 - Proceedings of the 6th International Conference on SOftware and Database Technologies, 337-346, Spain 18-21 July 2011
Personalization is not very common in Service Oriented Architecture and Service Discovery in practice, yet very important as it enables to retrieve more specific and relevant services. This is especially true in the case of complex discovery, where the retrieval system tries to find patterns of services that together can satisfy a (complex) request.
We describe the relation between personalization and service discovery in general, and then concretize this in the Service Discovery Framework. Personalization effectively improves the quality of the discovery algorithm. As an application, we show its benefits in the context of eHealth.
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Tegegne, T. and Weide, Th.P. van der, eHealth Service Discovery Framework: A Case Study in Ethiopia. USAB 2011 - Information Quality in eHealth, Austria, LNCS 7058, 397-416, 2011
eHealth services just as general Health services mostly emphasize on patient record management systems. Unfortunately the information in these records is rarely used to provide quicker, personalized eHealth services and appropriate treatment especially in a low infrastructure context where health service providers are often overwhelmed by numbers leading to acute degradation in service delivery. Domain specific service discovery with personalization aims at providing user-aware services. This is very important in a low infrastructure context where most patient requirements particularly from rural areas are a consequence of low literacy levels. The focus of this paper is to describe a framework for eHealth service discovery in a low infrastructure context. To do this, we categorize the context of users and augment it with a user specific profile. Our framework provides ontology based, context-aware semantic and personalized services.
Tegegne, T. and Weide, Th.P. van der, Is mHealth Viable to Ethiopia: an Empirical Study. Proceedings of the 3rd International Conference On Mobile Communication Technology For Development (M4D2012), 82-95, February 28-29, 2012 New Delhi, India
The expansion of Internet and the availability of mobile devices in affordable price to all type of people in the world expand the opportunity to use mobile technology in the health sector. In this paper we address the applicability, feasibility and usability of mobile technology to the under-served population of rural Ethiopia (particularly Amhara region). As the magnitude, disease prevalence and the shortage of healthcare workers increases from time to time, the health service delivery becomes inefficient and ineffective. To alleviate these grounded problems an additional technology is required. The result of the study shows that assisting healthcare service delivery through ICT is very urgent and demanding. In addition, the mHealth is the main channel to address the aforementioned problem. To this end we proposed a mobile based health service discovery framework.
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Bagarukayo, E. and Weide, Th.P. van der and Mbarika, V., Impact of Video Recorded Lectures on Learning at Radboud University. SIG GlobDev Fourth Annual Workshop, Shanghai, China. 194-217, 2011
Due to the continuous emergence of new technology, more and more students want to use technology for learning. Digital technology has become part of students' life today, hence the term Digital Natives in reference to today's students. A pilot survey was carried out at Radboud University, Netherlands to determine the impact of video recorded lectures on the students learning process. We present the findings from the survey indicating that students benefitted from the videos. The results we present reveal that the videos are often used to prepare for exams, future classes, catch up with missed classes, among others. The students appreciate the immediate availability of the information on video, the fact that they are able to make the most of micro moments; and they believe they perform better with the recorded videos, among other benefits. The researchers also give some recommendations for introducing the video recorded lectures in Least Developing Countries (LDCs).
Muyinda, P.B. and Lubega, J.T. and Lynch, K. and Weide, Th.P. van der, Learning Context of University students in Africa: a Propelor or Inhibitor for mLearning?. ICCIR11
Context is an important dimension in context-aware eLearning systems. Of particular importance are the IMS Global Learning Consortium learning contexts, namely: Learner Information Context, Device Context, Digital Context, Physical Context and World Context. Whereas these contextual variables are of great significance to conventional eLearning, little research has been conducted to establish their significance to mLearning. In a survey of undergraduate distance and conventional learners at Makerere University in Uganda, it was established that mLearning was still at its embryonic stage. As a result, it was not significantly associated with any of the IMS Global Learning Consortium learning contexts. It was concluded that a specific learning context provides no specific impediment to mLearning because a learner or context-aware system can easily work around a given would be impeding learning context, which means that mLearning can be partaken of in any learning context. Be it as it was, a further investigation was necessitated into relationship between the different learning contexts and how they impacts on mLearning.
Li, R. and Weide, Th.P. van der, Extended Language Models for XML Element Retrieval. 9th international conference on Initiative for the evaluation of XML retrieval: comparative evaluation of focused retrieval (INEX'10), 89-97, 2011
In this paper we describe our participation in the INEX 2010 ad-hoc track. We participated in three retrieval tasks (restricted focused task, relevant-in-context, restricted relevant-in-context) and report our findings based on a single set of measure for all tasks. In this year's participation, we evaluate the performance of the standard language model that is more focused on a fixed number of relevant characters than on relevant paragraphs. Our findings are: 1) the simplest language model for document retrieval performs relatively well in the restricted focused task when using a fixed offset that is close to the average character distance from the beginning of a document to its main content; 2) a good result of document ranking does improve the performance of snippet retrieval; 3) stemming and stopword removal can further boost performance.
Muyinda, P.B. and Lubega, J.T. and Lynch, K. and Weide, Th.P. van der, A Framework for Instantiating Pedagogic mLearning Objects Applications. International Colloquium on Theoretical Aspects of Computing (ICTAC 2011), 194-217
An increasing desire to port learning objects on mobile phones exists. However, there is limited understanding on how to pedagogically obtain access to and use learning objects on mobile phones. The limited understanding is caused by a dearth in frameworks for underpinning the development of mobile learning objects applications. Following Design Research methodology, we developed a Mobile Learning Objects Deployment and Utilisation Framework (MoLODUF) to address this problem. MoLODUF is composed of twelve dimensions, including: MLearning Objects, MLearning Device, MLearning Interface, MLearning Connectivity, MLearning Process, MLearning Costs, MLearning Resources, MLearning Context, MLearning Objects User, MLearning Ethics, MLearning Policy and MLearning Evaluation. The MoLODUF makes significant extensions to existing electronic and mLearning frameworks. It provides a competency set of guidelines for developing and/or evaluating applications for deploying and utilizing learning objects on mobile phones.
Bagarukayo, E. and Lubega, J.T. and Weide, Th.P. van der, An evaluation strategy for the Moodle Learning Environment based on Bloom's Taxonomy. CSEDU 2010 (the International Conference on Computer Supported Education)
Learning environments are based on core foundations, describing how knowledge is acquired and used, the underlying pedagogical philosophy, the supported learning process, the role of technique and culture, and related pragmatics. Bloom's Digital Taxonomy (BDT) describes the various thinking skills, ranging from low to high order thinking skills. We relate the learning environment Moodle to BDT by relating the core foundations with the thinking skills. We evaluate Moodle from different points of views: - methods, effectiveness and comparison with the existing learning environments.
Journals Conferences Reports
Bagarukayo, E. and Groenewegen, J. and Weide, Th.P. van der, Interaction with a Digital Learning Environment of a University.
We focus on the Digital Learning Environment (DLE) within an educational institution. We discuss the position of the DLE in a general architecture for the institution, and discuss its efficiency and effectiveness. Then we discuss the related generic educational approach in terms of the architectural model of competence and Bloom's Taxonomy when using a DLE. We discuss the completeness of such a methodology by relating it to the methodology framework. As a case study and proof of concept we look at the DLE of Radboud University, Nijmegen by studying how the DLE was implemented and how it has made the learning process more efficient at this institution. We also show some figures that give an impression of the effects of the DLE on the students' performance.
Bagarukayo, E. and Lubega, J.T. and Weide, Th.P. van der, A Critical Analysis of Instructional Materials towards the Attainment of Higher Order Cognitive Skills.
The study aims at determining the impact of Multimedia on the development of Perceived Higher Order Cognitive Skills (HOCS). Perceived HOCS is the attainment of HOCS based on the students' perceptions. The research experiment using a case study undertaken was conducted on 497 students split into two groups who used Multimedia and text book instructional methods respectively, to determine the impact of exposure to the technology on learning skills. The data collected was analyzed to determine the relationship between HOCS development and the instruction method. Other attributes that were investigated include students' attitudes, learning interest, learned from others, self reported learning, decision making, problem solving, critical thinking, and other skills. The findings from the study suggest that when Multimedia materials are used for instruction, students attain more HOCS as compared to the traditional text book approach. The study therefore concludes that the use of Multimedia materials improves the students' HOCS, attitudes, learning interest, learned from others, self reported learning, decision making, problem solving, critical thinking, and other skills.
Bruijn, S. de and Weide, Th.P. van der, From Business Rule to Attack Tree.
Information security is a strongly evolving dynamic domain. Decisions need to be made fast. Attack trees help to create a better overview of the threats affecting an asset. However, Attack trees do not have a natural structural approach for using them. In this paper Business rules are proposed to form the basis of such an approach. Business rule are build up in a structural way as has been shown in various studies. This structure may be employed for a structural translation of these rules into Attack trees. In this paper we propose such a translation scheme.
Hinne, M. and Weide, Th.P. van der, Local Approximation of Centrality Measures.
Centrality measures provide a means to differentiate the importance of vertices in a network. These measures are mathematically clear, but the algorithms to compute them often have quadratic time complexity or worse. This may lead to significant computational challenges when applied to large networks. In this paper, we propose a local strategy for three frequently used centrality measures: (i)closeness, (ii betweenness and (iii) PageRank. This local approach uses only the vertices directly adjacent to a target vertex to derive an approximation of the true centrality measure. The approximations are accompanied with an analysis of the approximation error bounds. Our analysis and experiments show that local approximations are quite successful on undirected graphs, and on directed graphs depending on the reciprocity of edges.
Zaaiman, J.J. and Herselman, M.E. and Michels J. and Ermens, M. and Weide, Th.P. van der, Stakeholder and user feedback on the Living Lab at University of Venda. South Africa
The purpose of this paper is to provide feedback and results of a research survey and interviews that were conducted with specific stakeholders and users of the Living Lab at the University of Venda (Univen) which was obtained during August 2010. Univen apply the living lab methodology to transform themselves within their community to become a socio-technical eco-system. The role of key stakeholders in this eco-system is highlighted as well as the methodology and process of how Univen will monitor and evaluate their success and progress. The uniqueness of Univen with its specific geographical positioning allows for it to become an eco-system. In this system users of the community can become active participants in the co-creation of open innovation. Uplifting the business and small enterprises around the university in the Thohoyandou environment through this approach may enable more economical development in the area. Co-participation in creating this can assist the university to measure its impact as an institution in the community around Univen. Careful planning and support from the leadership of the university will be an important factor to create this eco-system and which will then be monitored closely.