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Absfmcl-The IEEE 802.11e working group aims to enhance the current 802.11 MAC to support the integrated data and voice (or video) communications. Till now a draft of the IEEE 802.11e EDCF has been proposed. In this paper, we evaluate the performance of the EDCF by dividing the traffic into two categories, namely real-time packets and non real-time packets,(More)
Femtosecond laser irradiation was employed to induce mutations in Rhizopus oryzae, leading to increases in fumaric acid production. Compared to the parental strain, mutant strain FM19 exhibited an increase in titer and yield of 56.3% and 36.6%, respectively, corresponding to a titer of 49.4 g/L and a yield of 0.56 g fumaric acid per g glucose. Metabolic(More)
We propose a new routing algorithm for wireless sensor networks for post-disaster road monitoring in this paper in which the wireless sensor nodes are arranged in a linear manner. It thus becomes necessary for the design of more efficient routing algorithms for such types of applications. Our new algorithm includes route establishment, packet forwarding and(More)
This paper first analyzes the delay and energy consumption mechanism of SMAC. Then it proposes an improved DC-SMAC protocol by replacing the fixed duty mechanism with adaptive duty cycle mechanism, which adopts a priority discriminant function to make the node with more packets have the priority to access channel. The simulation results show that the(More)
This paper presents a novel scheme that provides high level of security and privacy in a Wireless Mesh Network (WMN). We combine an approach of Network Coding with multiple layered encryption of onion routing for a WMN. An added superior feature provides higher level of security and privacy. Sensitive network information is confined to 1-hop neighborhood(More)
Wireless Mesh Networks (WMNs) are a wireless broadband access technology based completely on IP technologies and has thus rapidly become a means for broadband access with the characteristics of high capacity, high speed and wide coverage. For trusted roaming in WMNs, the configuration of the access platforms must be checked first before access to the(More)
This paper introduced an improved-LDA to overcome the drawbacks existing in traditional linear discriminant analysis method. It redefined the characteristic matrix by adding a weight vector which is determined by the posterior classification rate of each feature. Therefore it can discriminate different classes of samples in the projection space more(More)
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