For help in preparation of this article, thanks to Ballard Andrews, Soraya Betancourt, Denise Freed and Martin Hürlimann, Cambridge, Massachusetts, USA; Myrt E. Cribbs, Chevron Energy Technology Company, Houston; Tara Davies, James Du and Ray Kennedy, Edmonton, Alberta, Canada; Peter Eichelberger, Adomite Chemicals, Nalco Energy Services L.P., Sugar Land, Texas; Doris Gonzalez, Houston; Gregory...

Editor’s Note: At the 1983 National Conference, there was a special session on Technology Transfer. Six speakers from different industrial organizations presented their personal views on the process of turning the results of AI restarch and development into commercial practice. Unfortunately there was not time to produce and distribute a written record of the Symposium for the attendees. To cor...

We have analyzed the geoelectric response produced by three cavities cut into different geological substrata of granite, phyllite, and sandstone that had previously been characterized by direct methods. We also examined a mining void excavated in granite. In each case, we applied three different geoelectric arrays (Wenner-Schlumberger, Wenner and dipole-dipole) and several inter-electrode spaci...

In this note, we first give necessary and sufficient conditionsfor the Hunvitz stability of the family A of polynomials 6(s) = Pm,_(s),where the polynomials F i ( s ) are fixed; and the polynomials Manuscript received July 20, 1990; revised April 18, 1991, and October4. 1991. This work was supportcd by the National Science Foundationunder Grants ECS-8914357, ECS-8613315, and ECS...