At the end of the last Ice Age, on the plains of eastern Colorado, the great beasts that have sustained the people there for generations have disappeared. Already the mammoth and the mastodon have vanished, and now the giant bison are disappearing. Helia, a Spirit Woman of the Grass People, experiences a strange vision as part of her dedication, and now must try to understand what purpose the Great Goddess has in choosing her for a daughter, even as her people struggle for survival against fading resources. With no clear path for them, the fate of her people lies with Helia, daughter of the...

Ten thousand years ago:
When Atlantis, a sprawling city on an island in the Atlantic Ocean, suddenly exploded and sank and the Earth was thrown into chaos, several hundred of its technologically advanced survivors were forced to take emergency action and escaped in a fleet of spacecraft to a distant planet forever. But some of the survivors had other ideas. Escaping to Hollow Earth, a network of caverns and tunnels built deep into the Earth and filled with experimental laboratories and research facilities, they put themselves in suspended animation in order to survive the destruction on...

This book is intended to address both the quantitative and qualitative issues of programmable controllers for factory automation. It is helpful for both the newcomer to the field and the experienced control engineer requiring a fresh perspective.