不同于以往仅关注无线传感器网络中安全数据聚合(secure data aggregation,SDA)的机密性而忽视其可靠性的研究,将群智感知的拍卖模型与SDA相结合,提出了一种新的安全隐私同态数据聚合机制(secure privacy homomorphism data aggregation...不同于以往仅关注无线传感器网络中安全数据聚合(secure data aggregation,SDA)的机密性而忽视其可靠性的研究,将群智感知的拍卖模型与SDA相结合,提出了一种新的安全隐私同态数据聚合机制(secure privacy homomorphism data aggregation,SPHDA).首先,讨论了SDA的拍卖模型,与传统的拍卖模型相比,该模式可同时具有隐私保护和完整性验证能力.其次,研究了一种激励机制,簇头仅从簇内的成员节点的子集收集传感数据,以减少节点之间的通信量,同时不失准确性和完整性.仿真结果表明,该机制在准确性的约束下保障了系统的有效性.展开更多
Physical layer security methods based on joint relay and jammer selection(JRJS)have been widely investigated in the study of secure wireless communications.Different from current works on JRJS schemes,which assumed th...Physical layer security methods based on joint relay and jammer selection(JRJS)have been widely investigated in the study of secure wireless communications.Different from current works on JRJS schemes,which assumed that the global channel state information(CSI)of the eavesdroppers(Eves)was known beforehand,then the optimal relaying and jamming relays were determined.More importantly,the time complexity of selecting optimal jamming relay is O(N^(2)),where N is the maximum number of relays/Eves.In this paper,for the scenario where the source wants to exchange the message with the destination,via relaying scheme due to longer communication distance and limited transmission power,in the presence of multiple Eves,with the assumption of Eves'perfect CSI and average CSI,we propose two kinds of JRJS methods.In particular,the time complexity of finding the optimal jammer can be reduced to O(N).Furthermore,we present a novel JRJS scheme for no CSI of Eves by minimizing the difference between expected signal and interfering signal at the destination.Finally,simulations show that the designed methods are more effective than JRJS and other existing strategies in terms of security performance.展开更多
A composite was created by incorporating the quantum dot-enhanced SiO_(2)nanoparticles within this hydrogel.Based on this composite,a temperature-controlled fluorescent probe for DCP was developed.A meticulous examina...A composite was created by incorporating the quantum dot-enhanced SiO_(2)nanoparticles within this hydrogel.Based on this composite,a temperature-controlled fluorescent probe for DCP was developed.A meticulous examination of this probe revealed its attributes and factors affecting its performance.By using temperature modulation,the probe was adept at detecting DCP concentrations ranging between 1.0×10^(-6)and 9.0×10^(-6)mol/L.Such a probe offers remarkable selectivity,repeatability,and robust stability,so that the detection of DCP can be carried out at different temperatures,and a fast,reliable,sensitive and low-cost intelligent detection method is realized.展开更多
文摘不同于以往仅关注无线传感器网络中安全数据聚合(secure data aggregation,SDA)的机密性而忽视其可靠性的研究,将群智感知的拍卖模型与SDA相结合,提出了一种新的安全隐私同态数据聚合机制(secure privacy homomorphism data aggregation,SPHDA).首先,讨论了SDA的拍卖模型,与传统的拍卖模型相比,该模式可同时具有隐私保护和完整性验证能力.其次,研究了一种激励机制,簇头仅从簇内的成员节点的子集收集传感数据,以减少节点之间的通信量,同时不失准确性和完整性.仿真结果表明,该机制在准确性的约束下保障了系统的有效性.
基金supported by the National Natural Science Foundation of China with Grants 62301076 and 62321001。
文摘Physical layer security methods based on joint relay and jammer selection(JRJS)have been widely investigated in the study of secure wireless communications.Different from current works on JRJS schemes,which assumed that the global channel state information(CSI)of the eavesdroppers(Eves)was known beforehand,then the optimal relaying and jamming relays were determined.More importantly,the time complexity of selecting optimal jamming relay is O(N^(2)),where N is the maximum number of relays/Eves.In this paper,for the scenario where the source wants to exchange the message with the destination,via relaying scheme due to longer communication distance and limited transmission power,in the presence of multiple Eves,with the assumption of Eves'perfect CSI and average CSI,we propose two kinds of JRJS methods.In particular,the time complexity of finding the optimal jammer can be reduced to O(N).Furthermore,we present a novel JRJS scheme for no CSI of Eves by minimizing the difference between expected signal and interfering signal at the destination.Finally,simulations show that the designed methods are more effective than JRJS and other existing strategies in terms of security performance.
基金Funded by the Natural Science Foundation of Hubei Province(No.2022CFB861)the Wenhua College Research and Innovation Team(No.2022T01)。
文摘A composite was created by incorporating the quantum dot-enhanced SiO_(2)nanoparticles within this hydrogel.Based on this composite,a temperature-controlled fluorescent probe for DCP was developed.A meticulous examination of this probe revealed its attributes and factors affecting its performance.By using temperature modulation,the probe was adept at detecting DCP concentrations ranging between 1.0×10^(-6)and 9.0×10^(-6)mol/L.Such a probe offers remarkable selectivity,repeatability,and robust stability,so that the detection of DCP can be carried out at different temperatures,and a fast,reliable,sensitive and low-cost intelligent detection method is realized.
