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IEEE 802.11 defines physical and virtual carrier sensing mechanisms to avoid interference in wireless local area networks for the kind of interference originating from within the receiving range of a receiver. However, in wireless ad hoc networks most interference comes from outside of this range. So, the effectiveness of IEEE 802.11 carrier sensing(More)
This paper presents a Markov chain analysis for studying the performance of the IEEE 802.11 Distributed Coordination Function. The model supports an arbitrary back-off strategy. We found that the most important parameter affecting the performance of binary exponential back-off is the initial back-off window size. Our experimental results show that the(More)
Queuing in theme parks is a significant factor decreasing customer satisfaction. Visitors spend much time standing and waiting for the rides. If the visitors can register in a virtual queue for the rides while engaging some other activities, the wasted time will be reduced and the customer satisfaction level increases. This study is first to design a(More)
It is true that Internet has not only expanded our horizons, but also triggered an unprecedented revolution of operating electronization against the traditional method after we entered the 21<sup>st</sup> century - also called the age of Internet. In the business area, many enterprises have already achieved the goal of electronic management, saved human(More)
It has been an important issue to improve customers' satisfaction in theme parks for which become a major role of recreation in our daily life. Waiting for rides has been identified as a factor decreasing satisfaction. A previous study indicated that a virtual queuing system can reduce the total waiting time so the customer's satisfaction is improved. The(More)
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