Describes the principle involved in an osmotic pump used to extract fresh water from the oceans and in an osmotic power plant used to generate electricity. Although shown to be thermodynamically feasible, the osmotic principle is not likely to be used commerically for these purposes in the near future. (JR)

Focuses on human information processes and problem solving. Although a large body of knowledge is prerequisite to acquiring skill, the authors state that knowledge must be indexed by patterns that guide the person in a fraction of a second to relevant parts of the knowledge store. (Author/SA)