We describe a new species of gerreid fish,Gerres septemfasciatus,based on four specimens collected from the northern South China Sea.G.septemfasciatus most closely resembles G.limbatus in general appearance.However,G....We describe a new species of gerreid fish,Gerres septemfasciatus,based on four specimens collected from the northern South China Sea.G.septemfasciatus most closely resembles G.limbatus in general appearance.However,G.septemfasciatus is distinguished from the latter and other congeners by having 3 to 3.5 scales between the base of the fifth dorsal spine and lateral line.This species has a distinctive color pattern,including 7-8 regular,vertical,blue-grayish bands on its side.The distribution of this species is currently known to include the Chinese coastal waters of the South China Sea,but may be also include the coastal waters of southeastern Asia.展开更多
Unmanned aerial vehicle(UAV)was introduced as a novel traffic device to collect road traffic information and its cruise route planning problem was considered.Firstly,a multi-objective optimization model was proposed a...Unmanned aerial vehicle(UAV)was introduced as a novel traffic device to collect road traffic information and its cruise route planning problem was considered.Firstly,a multi-objective optimization model was proposed aiming at minimizing the total cruise distance and the number of UAVs used,which used UAV maximum cruise distance,the number of UAVs available and time window of each monitored target as constraints.Then,a novel multi-objective evolutionary algorithm was proposed.Next,a case study with three time window scenarios was implemented.The results show that both the total cruise distance and the number of UAVs used continue to increase with the time window constraint becoming narrower.Compared with the initial optimal solutions,the optimal total cruise distance and the number of UAVs used fall by an average of 30.93% and 31.74%,respectively.Finally,some concerns using UAV to collect road traffic information were discussed.展开更多
Stingray＆Stingray II Stingray是联邦调查局使用最为广泛,同时也是引发争论最多的手机跟踪定位工具。它是一个盒子形状的便携式设备,有时也被称为＂IMSI捕捉器＂,可以通过发送信号＂诱使＂目标手机连接至其自身,从而搜集一定半径范围...Stingray＆Stingray II Stingray是联邦调查局使用最为广泛,同时也是引发争论最多的手机跟踪定位工具。它是一个盒子形状的便携式设备,有时也被称为＂IMSI捕捉器＂,可以通过发送信号＂诱使＂目标手机连接至其自身,从而搜集一定半径范围内数百部手机的国际移动用户识别码（IMSI）以及电子序列号（ESM）。Stingray的价格为约68000美元,其升级版Stingray II的价格为约134000美元。展开更多
基金Supported by the Ministry of Science and Technology of the People's Republic of China under contract (No 2006FY110500)
文摘We describe a new species of gerreid fish,Gerres septemfasciatus,based on four specimens collected from the northern South China Sea.G.septemfasciatus most closely resembles G.limbatus in general appearance.However,G.septemfasciatus is distinguished from the latter and other congeners by having 3 to 3.5 scales between the base of the fifth dorsal spine and lateral line.This species has a distinctive color pattern,including 7-8 regular,vertical,blue-grayish bands on its side.The distribution of this species is currently known to include the Chinese coastal waters of the South China Sea,but may be also include the coastal waters of southeastern Asia.
基金Project(2009AA11Z220)supported by the National High Technology Research and Development Program of China
文摘Unmanned aerial vehicle(UAV)was introduced as a novel traffic device to collect road traffic information and its cruise route planning problem was considered.Firstly,a multi-objective optimization model was proposed aiming at minimizing the total cruise distance and the number of UAVs used,which used UAV maximum cruise distance,the number of UAVs available and time window of each monitored target as constraints.Then,a novel multi-objective evolutionary algorithm was proposed.Next,a case study with three time window scenarios was implemented.The results show that both the total cruise distance and the number of UAVs used continue to increase with the time window constraint becoming narrower.Compared with the initial optimal solutions,the optimal total cruise distance and the number of UAVs used fall by an average of 30.93% and 31.74%,respectively.Finally,some concerns using UAV to collect road traffic information were discussed.
文摘Stingray＆Stingray II Stingray是联邦调查局使用最为广泛,同时也是引发争论最多的手机跟踪定位工具。它是一个盒子形状的便携式设备,有时也被称为＂IMSI捕捉器＂,可以通过发送信号＂诱使＂目标手机连接至其自身,从而搜集一定半径范围内数百部手机的国际移动用户识别码（IMSI）以及电子序列号（ESM）。Stingray的价格为约68000美元,其升级版Stingray II的价格为约134000美元。
