THE outbreak of violence in April between the largely segregated Zwai and Tabu tribes in Libya＇s remote, Saharan town of Kufra shattered the uneasy calm that held since last February＇s clashes, resulting in more tha...THE outbreak of violence in April between the largely segregated Zwai and Tabu tribes in Libya＇s remote, Saharan town of Kufra shattered the uneasy calm that held since last February＇s clashes, resulting in more than 100 deaths. The clashes illustrate the chal- lenges in building a new state.展开更多
智慧边境建设是保障中国边境安全、维系国家地缘安全和实现可持续发展的核心议题。以web of science为数据源,利用Cite Space解析智慧边境研究特征及国外研究进展,并展望未来研究方向。结果表明:智慧边境研究尚处于起步阶段,发文数量呈...智慧边境建设是保障中国边境安全、维系国家地缘安全和实现可持续发展的核心议题。以web of science为数据源,利用Cite Space解析智慧边境研究特征及国外研究进展,并展望未来研究方向。结果表明:智慧边境研究尚处于起步阶段,发文数量呈波动上升趋势,但研究关注度较低。智慧边境研究群体分布分散,仅存在少量合作关系,尚未形成紧密的合作性作者网络,美国、英国、中国、加拿大、德国是研究智慧边境较多的国家。边境安全是智慧边境研究最关注的话题,移民管理和智能监控是智慧边境建设的重点。智慧边境研究主要围绕智慧边境内涵、智慧边境需求、智慧边境系统、预警机制构建、再边境化与智慧化和边境战略与跨境合作6个议题展开。未来,智慧边境研究应深化智慧边境理论与方法创新,开展中国智慧边境管控体系构建,加强通道精准管控与预警研究,探究多主体联动与人性化治理模式。展开更多
This work focuses on the problem of monitoring the coastline, which in Portugal’s case means monitoring 3007 kilometers, including 1793 maritime borders with the Atlantic Ocean to the south and west. The human burden...This work focuses on the problem of monitoring the coastline, which in Portugal’s case means monitoring 3007 kilometers, including 1793 maritime borders with the Atlantic Ocean to the south and west. The human burden on the coast becomes a problem, both because erosion makes the cliffs unstable and because pollution increases, making the fragile dune ecosystem difficult to preserve. It is becoming necessary to increase the control of access to beaches, even if it is not a popular measure for internal and external tourism. The methodology described can also be used to monitor maritime borders. The use of images acquired in the infrared range guarantees active surveillance both day and night, the main objective being to mimic the infrared cameras already installed in some critical areas along the coastline. Using a series of infrared photographs taken at low angles with a modified camera and appropriate filter, a recent deep learning algorithm with the right training can simultaneously detect and count whole people at close range and people almost completely submerged in the water, including partially visible targets, achieving a performance with F1 score of 0.945, with 97% of targets correctly identified. This implementation is possible with ordinary laptop computers and could contribute to more frequent and more extensive coverage in beach/border surveillance, using infrared cameras at regular intervals. It can be partially automated to send alerts to the authorities and/or the nearest lifeguards, thus increasing monitoring without relying on human resources.展开更多
文摘THE outbreak of violence in April between the largely segregated Zwai and Tabu tribes in Libya＇s remote, Saharan town of Kufra shattered the uneasy calm that held since last February＇s clashes, resulting in more than 100 deaths. The clashes illustrate the chal- lenges in building a new state.
文摘智慧边境建设是保障中国边境安全、维系国家地缘安全和实现可持续发展的核心议题。以web of science为数据源,利用Cite Space解析智慧边境研究特征及国外研究进展,并展望未来研究方向。结果表明:智慧边境研究尚处于起步阶段,发文数量呈波动上升趋势,但研究关注度较低。智慧边境研究群体分布分散,仅存在少量合作关系,尚未形成紧密的合作性作者网络,美国、英国、中国、加拿大、德国是研究智慧边境较多的国家。边境安全是智慧边境研究最关注的话题,移民管理和智能监控是智慧边境建设的重点。智慧边境研究主要围绕智慧边境内涵、智慧边境需求、智慧边境系统、预警机制构建、再边境化与智慧化和边境战略与跨境合作6个议题展开。未来,智慧边境研究应深化智慧边境理论与方法创新,开展中国智慧边境管控体系构建,加强通道精准管控与预警研究,探究多主体联动与人性化治理模式。
文摘This work focuses on the problem of monitoring the coastline, which in Portugal’s case means monitoring 3007 kilometers, including 1793 maritime borders with the Atlantic Ocean to the south and west. The human burden on the coast becomes a problem, both because erosion makes the cliffs unstable and because pollution increases, making the fragile dune ecosystem difficult to preserve. It is becoming necessary to increase the control of access to beaches, even if it is not a popular measure for internal and external tourism. The methodology described can also be used to monitor maritime borders. The use of images acquired in the infrared range guarantees active surveillance both day and night, the main objective being to mimic the infrared cameras already installed in some critical areas along the coastline. Using a series of infrared photographs taken at low angles with a modified camera and appropriate filter, a recent deep learning algorithm with the right training can simultaneously detect and count whole people at close range and people almost completely submerged in the water, including partially visible targets, achieving a performance with F1 score of 0.945, with 97% of targets correctly identified. This implementation is possible with ordinary laptop computers and could contribute to more frequent and more extensive coverage in beach/border surveillance, using infrared cameras at regular intervals. It can be partially automated to send alerts to the authorities and/or the nearest lifeguards, thus increasing monitoring without relying on human resources.
