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The key to the successful development of distributed measurement and control systems is the communications link. Emphasising the importance of communications standards, this topical text describes and discusses serial data highways developed for measurement and control applications. Such standards demand conformity to a protocol which ensures reliable transmissions between digital field devices, using a common communications interface. This comprehensive overview of the large family of data highways currently in use addresses all aspects of the practical implementation of industrial control...

American lore has slighted the cowgirl, although at least one can still be found in nearly every ranching community. Like her male counterpart, she rides and ropes, understands land and stock, and confronts the elements. The writer and photographer Teresa Jordan traveled sixty thousand miles in the American West, talking with more than a hundred authentic cowgirls running ranches and performing in rodeos. The result is a fascinating book that also situates the cowgirl in history and literature. A new preface and updated bibliography have been added to this Bison Book edition.