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Botnets are groups of compromised computers that botmasters (botherders) use to launch attacks over the Internet. To avoid detection, botnets use DNS fast flux to change the mapping between IP addresses and domain names periodically. Domain generation algorithms (DGAs) are employed to generate a large number of domain names. Detection techniques have been proposed to identify malicious domain names...
Fractional pixel motion estimation (ME), including fractional pixel interpolation and fractional motion vector (MV) prediction, has been implemented within many modern video codecs to optimize the rate-distortion performance. However, it brings about significant computational complexity increase. This paper proposes an interpolation-free fractional pixel ME scheme. Based on the analysis of the property...
Rendezvous is a fundamental operation for cognitive users to establish communication links so as to realize data communications and network management. Most of existing rendezvous algorithms implicitly assume that each cognitive user is equipped with one radio, i.e., one wireless transceiver. As the cost of wireless transceivers is dropping, it becomes economically feasible to utilize multiple radios...
According to the characteristics of the equipment maintenance, and combining the advantages and disadvantages of qualitative and quantitative evaluation, this paper introduces a method to evaluate the factors affecting equipment maintenance support ability based on the FAHP (“fuzzy synthesis” and “analytic hierarchy process”) and analyzes evaluation results. The effectiveness of the proposed method...
China is a multi-ethnic nation with rich and diverse culture traditions. State-wide standardized textbooks, however, take little into account the local ethnic minority cultures; thus limiting the opportunities of preserving the unique ethnic traditions through education. On the other hand, property of information technology requires information technology teaching to combine knowledge with local culture...
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