Suchergebnisse

Large dam construction has significant environmental and social impacts at different scales. As the largest developing country in the world, China has built about half of the world's large dams, and more are expected to be built over the next two decades to meet the country's rapidly growing demand for energy. This book summarizes and updates information about the history, distribution, functions, and impacts of large dams, both globally and at China's national level. It then addresses the environmental and social-economic impacts of large dams in China with particular emphasis on the impacts

Unmanned aerial vehicles (UAVs) have been widely applied in various fields, including but not limited to military, industry, and agriculture. But UAVs also confront severe security threats, which slows down their wide application. Current research mainly focuses on the security of a single UAV system, while paying little attention to UAV-related communications, especially in the physical and network layers. Thus, it becomes necessary to summarize potential security threats and corresponding countermeasures. To this end, we study mainstream attacks on UAV communications in order to propose security requirements. Then we present a comprehensive review on existing security countermeasures for enhancing UAV communication security in both the physical and network layers. We conclude with open issues and future prospects of UAV security. ; Peer reviewed