Wireless sensor networks (WSNs) have attracted high interest over the last few decades in the wireless and mobile computing research community. Applications of WSNs are numerous and growing, including indoor deployment scenarios in the home and office to outdoor deployment in an adversary's territory in a tactical background. However, due to their distributed nature and deployment in remote areas, these networks are vulnerable to numerous security threats that can adversely affect their performance. This problem is more critical if the network is deployed for some mission-critical applications, such as in a tactical battlefield. Random failure of nodes is also very likely in real-life deployment scenarios. Due to resource constraints in the sensor nodes, a traditional security mechanism with high overhead of computation and communication is not feasible in WSNs. Design and implementation of secure WSNs is, therefore, a particularly challenging task. This book covers a comprehensive discussion on state-of-the-art security technologies for WSNs. It identifies various possible attacks at different layers of the communication protocol stack in a typical WSN and presents their possible countermeasures. A brief discussion on the future direction of research in WSN security is also included.

Anesthesiology Critical Care Board Review fills a much-needed niche, not only in improving board examination test-taking skills but also as a tool for educating critical care physicians, anesthesiology practitioners, and advanced practice providers with the most relevant, up-to-date, state of the art considerations in critical care medicine. Content is specifically designed to prepare Anesthesiology and Emergency Medicine critical care fellows for the American Board of Anesthesiology Critical Care Medicine Certification Examination. The book offers diagnostic and therapeutic management considerations, divided into sections on technical aspects of critical care and organ systems, in a question-and answer format with clear, concise explanations and targeted references for each question.