0360-1315/$ see front matter 2009 Elsevier Ltd. A doi:10.1016/j.compedu.2008.12.020 * Corresponding author. Tel.: +1 919 513 1286; fax E-mail address: [email protected] (L.A. Annet The popularity of video games has transcended entertainment crossing into the world of education. While the literature base on educational gaming is growing, there is still a lack of systematic study of this emerg...

Multimedia applications are becoming increasingly popular in IP networks, while in mobile networks the limited bandwidth and the higher error rate arise in spite of its popularity. These are restraining factors for mobile clients using multimedia applications such as voice over IP (VoIP) or video streaming. In some conditions the retransmission of lost and corrupted packets should increase the ...

Internet multimedia streaming is becoming increasingly popular to access multimedia information. Two major issues arise in spite of its popularity. First, limited bandwidth restricts high bit rate video transmission. Second, wireless transmission by its nature may introduce higher rate of errors during transmission. The frequent errors should cause deterioration of the quality of multimedia str...

Multimedia communication like voice and video calls over IP or Video on Demand grows in popularity today [1], [2]. However, the development of such applications is a complex and error-prone process, as only basic framework support is available. In this paper we introduce RAPIX, a plug-in based Rich Internet Application (RIA) that eases this development. Furthermore, our web-based approach suppo...

BitTorrent (BT) is one of the most successful and effective mechanisms for distributing large volumes of content over the Internet. One of the primary reasons behind its success is its robustness to 'free-riding', in which peers manage to get a good download rate in spite of not uploading the content to others. It works well even in flash-crowd scenarios. In fact, more the crowd better is its p...

Traffic planning for multimedia has become more and more significant as new network infrastructures with different characteristics have been introduced lately. The increasing popularity of mobile communications has also drawn much of the attention from the research point of view. Thus, this paper addresses the problem of traffic planning, initiated by this interest, for mobile video communicati...

OPNET is a powerful network design and simulation tool that has gained popularity in industry and academia. However, there exists no known simulation approach on how to deploy a popular real-time network service such as videoconferencing. This paper demonstrates how OPNET can be leveraged to assess the readiness of existing IP networks to support desktop videoconference. To date, OPNET does not...

Recently, disk zoning techniques have been widely used for increasing disk drive capacity. As a side effect, data transfer rates for outer zones of a hard disk are much higher than those of inner zones. Without giving proper care to disk zoning features, disk bandwidth cannot be utilized e ectively. In this paper, we propose a data placement scheme for VBR (Variable Bit Rate) video objects, cal...

Recent years have witnessed the boom of online sharing media contents, which raise significant challenges in effective management and retrieval. Though a large amount of efforts have been made, precise retrieval on video shots with certain topics has been largely ignored. At the same time, due to the popularity of novel time-sync comments, or so-called “bullet-screen comments”, video semantics ...

The growing popularity of virtual and augmented reality communications and 360◦ video streaming is moving video communication systems into much more dynamic and resource-limited operating settings. The enormous data volume of 360◦ videos requires an efficient use of network bandwidth to maintain the desired quality of experience for the end user. To this end, we propose a framework for viewport...