Desktop multimedia environments to support collaborative distance learning

Desktop multimedia conferencing, when two or more persons can communicate among themselves via personal computers with the opportunity to see and hear one another as well as communicate via text messages while working with commonly available stored resources, appears to have important applications to the support of collaborative learning. In this paper we explore this potential in three ways: (a) through an analysis of particular learner needs when learning and working collaboratively with others outside of face-to-face situations; (b) through an analysis of different forms of conferencing environments, including desktop multimedia environments, relative to their effectiveness in terms of meeting learner needs for distributed collaboration; and (c) through reporting the results of a formative evaluation of a prototype desktop multimedia conferencing system developed especially for the support of collaborative learning. Via these analyses, suggestions are offered relating to the functionalities of desktop multimedia conferencing systems for the support of collaborative learning, reflecting new developments in both the technologies available for such systems and in our awareness of learner needs when working collaboratively with one other outside of face-to-face situations

The development of a model for organising educational resources on an Intranet

The twenty-first century has found education at the crossroads of change. There are burgeoning challenges facing the modern educator. To rise to the importuning, educators find themselves turning to Information Technology for the answers. The technologies utilised in attempts to overcome the challenges often include the Internet and electronic educational resources. Although the Internet is not unduly called the Information Highway, it is also fraught with misleading and incorrect information. Educators’ arduous searches result in few good and useable resources. Thus, to store, organise and efficiently retrieve the discovered resources is a matter of time-saving. The aim of the study was to develop a method to organise and retrieve educational resources in an efficient and personalised manner. In order to do this, an exploration into pedagogy and educational paradigms was undertaken. The current educational paradigm, constructivism, proposes that each learner is an individual with unique learning and personal needs. To develop a new model, the current models need to be understood. The current solutions for the organising of educational resources are realised as several software packages, also called e-learning packages. A list of criteria that describes the essential requirements for organising educational resources was established. These criteria were based upon the pedagogical principles prescribed by educators and the practical technological frameworks necessary to fulfil the needs of the teaching/learning situation. These criteria were utilised to critique and explore the available solutions. It was found that although the available e-learning packages fulfil a need within their genre, it does not meet with the core requirements of constructivism. The resource base model seeks to address these needs by focussing on the educational aspects of resource delivery over an Intranet. For the purposes of storing, organising and delivering the resources, a database had to be established. This database had to have numerous qualities, including the ability to search and retrieve resources with great efficiency. Retrieving data in an efficient manner is the forte of the star schema, while the storing and organising of data is the strength of a normalised schema. It is not standard practice to utilise both types of schemas within the same database. A star schema is usually reserved for data warehouses because of its data retrieval abilities. It is customary to utilise a normalised schema for operational databases. The resource base model, however, needs both the storage facilities of an operational database and the efficient query facilities of a data warehouse. The resource base model, therefore, melds both schemas into one database with interlinking tables. This database forms the foundation (or the back-end) of the resource base. The resource base model utilises web browsers as its user interface (or front-end). The results of the study on the pedagogy, the current e-learning solutions and the resource base were written up within this dissertation. The contribution that this dissertation makes is the development of a technique to efficiently store, organise and retrieve educational resources in such a manner that both the requirements of constructivism and outcomes-based education are fulfilled. To this end, a list of technological and pedagogical criteria on which to critique a resource delivery technique has been developed. This dissertation also elaborates on the schema designs chosen for the resource base, namely the normalised schema and the star schema. From this schema, a prototype has been developed. The prototype’s function was two-fold. The first function is to determine the feasibility of the technique. Secondly, to determine the success of the technique in fulfilling the needs expressed in the list of criteri

AHyCo: a Web-Based Adaptive Hypermedia Courseware System

Adaptive hypermedia courseware systems resolve the problem of users’ disorientation in hyperspace through the adaptive navigation and presentation support. We describe the AHyCo (Adaptive Hypermedia Courseware) - an adaptive Web-based educational system for creation and reuse of adaptive courseware with emphasis on adaptive navigation support and lessons sequencing. The proposed model consists of the domain model, the student model, and the adaptive model. The system is composed of two environments: the authoring environment and the learning environment

Separation of educational and technical content in educational hypermedia

The creation and development of educational hypermedia by teachers and educational staff is often limited by their lack of computing skills, time and support from the educational institutions. Especially the lack of computing skills is a hinderance to most of today’s educational experts. The problem is to find out how those educational experts could be supported by computer based tools which are tailored especially to their needs without having any technical limitations. In this study the separation of technical and educational content in educational hypermedia is examined as a solution to this problem. The main hypothesis of this study is that the separation of technical and educational content is possible if it is based on a fine-grained structure of different teaching and learning strategies and their conversion into an authoring tool. Such an authoring tool would make the creation of educational hypermedia very easy for teachers and therefore enable them to overcome the existing obstacles. The development of a new model, the creation of a new XML language and the implementation of a new authoring tool form the basis for a detailed investigation. The investigation was done by undertaking several research tasks like the evaluation of the XML language and the authoring tool by a group of educational experts of different knowledge domains, the practical usage of the authoring tool for the creation of real-life based educational material and the analysis of the gained research results. The analysis of the qualitative data showed that the separation of educational and technical content in educational hypermedia is possible and that it can be applied by educational experts with low computing skills as well as by technical experts with no educational background. Furthermore, the analysis allowed some additional insights into the creation of educational material by teachers and how it can be improved. The main conclusion of this study is that authoring tools in educational hypermedia should use the separation of educational and technical content based on different teaching and learning strategies which allows educational experts with low computing skills to create educational content for delivery via the World Wide Web

A Conceptual Framework for Web-based Intelligent Learning Environments using SCORM 2004

Abstrac

Physiotherapy student perspectives on synchronous dual-campus learning and teaching

An increasing number of universities offer educational programmes across multiple campuses, as a way of facilitating access to tertiary education and filling the shortage of health professionals in rural and regional settings. Offering an equitable learning experience across all sites has been considered an important aspect in any learning and teaching approach. This qualitative study analysed data from 10 focus group discussions and 11 unit evaluations, to explore student perceptions of synchronous dual-campus delivery of a physiotherapy programme in Central Queensland, Australia. An inductive approach to thematic analysis was used. Three themes emerged: (a) Student location influences learning; (b) Videoconferencing impacts learning and teaching; and (c) Dual-campus delivery determines teaching structures and shapes teaching processes. Difficulties related to cross-campus communication, logistics, and opportunities for interaction and engagement were seen as detrimental to synchronous dual-campus delivery. Skill-based demonstrations added another level of complexity. However, students identified a potential benefit from accessing expertise from both campuses. With careful planning and consideration of the potential barriers and facilitators, synchronous dual-campus learning environments can be an effective delivery option for higher education institutions. This study builds on existing literature and suggests a number of strategies that are specific to this mode of programme delivery

Internet performance modeling: the state of the art at the turn of the century

Seemingly overnight, the Internet has gone from an academic experiment to a worldwide information matrix. Along the way, computer scientists have come to realize that understanding the performance of the Internet is a remarkably challenging and subtle problem. This challenge is all the more important because of the increasingly significant role the Internet has come to play in society. To take stock of the field of Internet performance modeling, the authors organized a workshop at Schloß Dagstuhl. This paper summarizes the results of discussions, both plenary and in small groups, that took place during the four-day workshop. It identifies successes, points to areas where more work is needed, and poses “Grand Challenges” for the performance evaluation community with respect to the Internet