Urban Atmospheric Boundary-Layer Structure in Complex Topography: An Empirical 3D Case Study for Stuttgart, Germany

Investigation of the atmospheric boundary-layer structure in urban areas can be challenged by landscape complexity and the heterogenous conditions this instills.Stuttgart, Germany, is a city situated in a bowl-shaped basin and troubled by the accumulation of pollutants during weak-wind conditions.The center of Stuttgart is surrounded by steep slope

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Preventing DNS misuse for Reflection/Amplification attacks with minimal computational overhead on the Internet

DNS reflection/amplification attacks are types of Distributed Denial of Service (DDoS) attacks that take advantage of vulnerabilities in the Domain Name System (DNS) and use it as an attacking tool.This type of attack can quickly deplete the resources (i.e.computational and bandwidth) of the targeted system.Many defense mechanisms are proposed to m

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