Hongjin Yeh

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which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Building a global Network Relations with the internet has made huge changes in personal information system and even comments left on a webpage of SNS(Social Network Services) are appreciated as important elements that would(More)
All-to-all broadcast scheduling problems are considered in WDM optical passive star networks where k wavelengths are available in the network. It is assumed that each node has exactly one tunable transmitter and one xed tuned receiver. All transmitters can tune to k diierent w avelengths, and have the same tuning delay to tune from one wavelength to(More)
With the rapid growth of information technologies, mobile devices have been utilized in a variety of services such as e‐commerce. When a remote server provides such e‐commerce services to a user, it must verify the legitimacy of the user over an insecure communication channel. Therefore, remote user authentication has been widely deployed to verify the(More)
Collaboration is about interactions among multiple users by sharing resources. With the advent of new generation of mobile access devices such as smartphone and tablet PC, we address this for ubiquitous collaboration—the capability of multiple users to link together with disparate access devices in anytime and in anywhere. The implementation and experiments(More)