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Wireless LANs have been widely used to carry out a system to access Internet. WLAN security becomes mission one, especially a new type of attacks called covert channel based attack surfaced over the past few years. This attack uses different data rates provided in WLAN to transmit a secret message. Detecting this covert channel could be difficult due to existence of rate diversity in 802.11 WLAN....
Reasonable sitting an air quality monitoring stations (AQMS) network is an important task for environmental protection department. However, involving many factors, optimizing air quality monitoring sites has been proven to be in the class of nondeterministic polynomial (NP)-hard problem. The powerful search capability of the genetic algorithm (GA) is a key factor in improving the performance of selecting...
In order to monitor curing process of epoxy resin, the special system was established based on Fiber Bragg Grating (FBG). A bare FBG, a FBG packaged with quartz capillary and an accurate resistance thermometer were immersed into mixture of epoxy resin and curing agent, and were used to monitoring the whole curing process. The changes of temperature inside epoxy resin were detected by resistance thermometer...
This paper presents the characteristics of functions of the automatic monitoring system of the extra-high-rise building on the basis of the survey of oscillating robot (TCA2003 total station). The application situation and the precision of the automatic monitoring system have been analyzed. The applications indicate that this system has high efficiency and precise data transmission. The achievement...
Real-time tagless monitoring of cell viability using patch-clamp microdevices is reported and validated by using fluorescence imaging techniques for the first time. Specifically, human breast cancer cells MDA-MB-231 have been used for these studies. Systematic experiments on these cells found that the impedance change of captured cells by the micro-electrodes is a valid indicator of cell's living...
Based on Cheng-Liu-Wang identity-based signature scheme and Baek-Zheng pairing-based verifiable secret sharing scheme, a new secure monitoring scheme using identity-based threshold signcryption scheme for wireless sensor networks is proposed. The goal of this scheme is to provide a confidential and authenticated transmission channel for monitoring messages sent by nodes to BS over an insecure wireless...
With the development of e-commerce, electronic payment systems based on the Web have become a research hotspot. Most current payment models are based on the single bank, and e-cash has a lack of transparency and interoperation generally. Therefore, we put forward a distributed electronic payment system model based on bank union. It adopts a two-level secure architecture to guarantee the security of...
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