Cheng-Yue Chang

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—Recent technology advances in mobile networking have ushered in a new era of personal communication. Users can ubiquitously access the Internet via many emerging mobile appliances, such as portable notebooks, personal digital assistants (PDAs), and WAP-enabled cellular phones. While the transcoding proxy is attracting an increasing amount of attention in(More)
—Web caching and Web prefetching are two important techniques used to reduce the noticeable response time perceived by users. Note that by integrating Web caching and Web prefetching, these two techniques can complement each other since the Web caching technique exploits the temporal locality, whereas Web prefetching technique utilizes the spatial locality(More)
This paper explores the aggregate effect when caching multiple versions of the same Web object in the transcoding proxy. Explicitly, the aggregate profit from caching multiple versions of an object is not simply the sum of the profits from caching individual versions, but rather, depends on the transcoding relationships among them. Hence, to evaluate the(More)
Web caching and Web prefetching are two important techniques to reduce the noticeable response time perceived by users. Note that by integrating Web caching and Web prefetching, these two techniques can complement each other since Web caching technique exploits the temporal locality whereas Web prefetching technique utilizes the spatial locality of Web(More)
—In recent years, Internet telephony or voice-over IP is attracting an increasing amount of attention for the reason that it has the potential to significantly reduce the cost of long-distance voice communication. To provide the interoperability between different manufacturers and vendors, ITU-T is actively drawing up the standard for the Internet telephony(More)
In recent years, the Internet has emerged as an important collaborative platform. Many applications utilize the Inter-net to provide new kinds of services. Among others, In-ternet telephony is attracting an increasing amount of attention for the reason that it has the potential to significantly reduce the cost of long distance voice communication. In view(More)
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