In the 368-page paperback "Secure Roaming in 802.11 Networks", authors Paul Goransson and Raymond Greenlaw offer a comprehensive overview of Wi-Fi 802.11 roaming by comparing and contrasting it to cellular-roaming theory and techniques. This one-stop resource for design engineers builds upon the knowledge base of a professional audience without going into long discussions of theory long since mastered. The book explores the fundamental concepts, basic theory, and key principles of 802.11 networks with roaming capabilities. It elaborates on the necessary extensions to this wireless standard that allow users to roam and describes how these extensions can be successfully implemented in 802.11 WLANs. Coverage of user authentication in 802.11 is reviewed, as is roaming between 802.11 and other wireless technologies. Wireless technologies and application-programming interfaces are given their due with generous coverage as well, including future wireless technologies. This is a "must read" for RF and wireless designers, or computer and data network engineers.

Owen Bishop's "Robot Builder's Cookbook" features full step-by-step instructions for five complete self-build robots. The 384-page volume introduces key techniques in electronics, programming and construction for robust robots that work first time. This tutorial comes with many illustrations, close-up photographs and a lively, readable text that make it a fun and informative guide for novice and experienced robot builders. These hands-on projects cover not only the mechanics and basic electronics, but also the use of the popular programmable PIC microcontroller. This book will be useful to first-time robot builders, advanced builders wanting to know more about programming robots and students in further and higher education tackling microcontroller-based practical work. Electronics hobbyists and home-build-robot enthusiasts will also find this publication of interest for their projects.