Designing intelligent computer‐based simulations: A pragmatic approach

This paper examines the design of intelligent multimedia simulations. A case study is presented which uses an approach based in part on intelligent tutoring system design to integrate formative assessment into the learning of clinical decision‐making skills for nursing students. The approach advocated uses a modular design with an integrated intelligent agent within a multimedia simulation. The application was created using an object‐orientated programming language for the multimedia interface (Delphi) and a logic‐based interpreted language (Prolog) to create an expert assessment system. Domain knowledge is also encoded in a Windows help file reducing some of the complexity of the expert system. This approach offers a method for simplifying the production of an intelligent simulation system. The problems developing intelligent tutoring systems are examined and an argument is made for a practical approach to developing intelligent multimedia simulation systems

Peripatetic electronic teachers in higher education

This paper explores the idea of information and communications technology providing a medium enabling higher education teachers to act as freelance agents. The notion of a ‘Peripatetic Electronic Teacher’ (PET) is introduced to encapsulate this idea. PETs would exist as multiple telepresences (pedagogical, professional, managerial and commercial) in PET‐worlds; global networked environments which support advanced multimedia features. The central defining rationale of a pedagogical presence is described in detail and some implications for the adoption of the PET‐world paradigm are discussed. The ideas described in this paper were developed by the author during a recently completed Short‐Term British Telecom Research Fellowship, based at the BT Adastral Park

Principles for the selection and integration of educational multimedia materials

This paper sets out to clarify the decision framework for the selection and integration of educational multimedia material into courses. Two main areas are discussed. The first involves matching the educational principles inherent in the multimedia artefact to the aims of the course. The opposition between instructionist and constructivist approaches is particularly highlighted. The second area concerns the models used to integrate the multimedia component into the overall course. The models are classified in terms of how they distribute the balance of responsibility for explicit educational structuring between the multimedia system and the course tutor. The paper does not set out prescriptive rules; it aims rather to inform and articulate the decision space for the tutor

Sensing and mapping for interactive performance

This paper describes a trans-domain mapping (TDM) framework for translating meaningful activities from one creative domain onto another. The multi-disciplinary framework is designed to facilitate an intuitive and non-intrusive interactive multimedia performance interface that offers the users or performers real-time control of multimedia events using their physical movements. It is intended to be a highly dynamic real-time performance tool, sensing and tracking activities and changes, in order to provide interactive multimedia performances. From a straightforward definition of the TDM framework, this paper reports several implementations and multi-disciplinary collaborative projects using the proposed framework, including a motion and colour-sensitive system, a sensor-based system for triggering musical events, and a distributed multimedia server for audio mapping of a real-time face tracker, and discusses different aspects of mapping strategies in their context. Plausible future directions, developments and exploration with the proposed framework, including stage augmenta tion, virtual and augmented reality, which involve sensing and mapping of physical and non-physical changes onto multimedia control events, are discussed

Online interactivity: best practice based on two case studies

The purpose of this paper is to identify and explore best practice in the effective support of online interactivity. Five key issues related to best practice are delineated, based on the experience derived from two case studies. The first case study involved online, collaborative work carried out by twenty-six conversion M.Sc. students following a module on‘Interactive Multimedia Systems'. The online group work was structured around the production of essay-style critiques and the development of prototype multimedia resources. The discussions were structured using the bulletin board facility in WebCT. The second study involved sixty-four second-year undergraduate students following a module on‘Communication via Multimedia’. These students were involved in assessed online discussion groups that aimed to foster a community in enquiry and provide an opportunity for vicarious learning. The assessed discussion groups were based on Netscape Collabra. A comparison of the experience of these two case studies led to the identification of a set of five key issues relating to best practice in the effective support of online interactivity. The first four issues concern the design and implementation of the online learning experiences. The fifth issue involves reflection and improvement on the interventions mad

Analysis and implementation of the Large Scale Video-on-Demand System

Next Generation Network (NGN) provides multimedia services over broadband based networks, which supports high definition TV (HDTV), and DVD quality video-on-demand content. The video services are thus seen as merging mainly three areas such as computing, communication, and broadcasting. It has numerous advantages and more exploration for the large-scale deployment of video-on-demand system is still needed. This is due to its economic and design constraints. It's need significant initial investments for full service provision. This paper presents different estimation for the different topologies and it require efficient planning for a VOD system network. The methodology investigates the network bandwidth requirements of a VOD system based on centralized servers, and distributed local proxies. Network traffic models are developed to evaluate the VOD system's operational bandwidth requirements for these two network architectures. This paper present an efficient estimation of the of the bandwidth requirement for the different architectures.Comment: 9 pages, 8 figure

Reviews

Web‐Teaching ‐ A Guide to Interactive Teaching for the World‐Wide Web by David W. Brooks, New York: Plenum, 1997. ISBN: 0–306–45552–8. Paperback, 214 pages. $30

Image mining: trends and developments

[Abstract]: Advances in image acquisition and storage technology have led to tremendous growth in very large and detailed image databases. These images, if analyzed, can reveal useful information to the human users. Image mining deals with the extraction of implicit knowledge, image data relationship, or other patterns not explicitly stored in the images. Image mining is more than just an extension of data mining to image domain. It is an interdisciplinary endeavor that draws upon expertise in computer vision, image processing, image retrieval, data mining, machine learning, database, and artificial intelligence. In this paper, we will examine the research issues in image mining, current developments in image mining, particularly, image mining frameworks, state-of-the-art techniques and systems. We will also identify some future research directions for image mining