Pope, David P

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Using Web-Based Technology in Laboratory Instruction to Reduce Costs
(2002-09-03) Powell, Rita M; Anderson, Helen; Van der Spiegel, Jan; Pope, David P
The authors report the results of a project to reemphasize high quality, hands-on laboratory courses in the engineering curriculum while reducing their costs through the application of web-based teaching tools. The project resulted in substantial gains in productivity of faculty and staff, increased utilization of laboratory space, cost reductions in equipment, and improved quality of learning for our students.
Dislocation Screening and the Brittle-to-Ductile Transition: A Kosterlitz-Thouless Type Instability
(1994-08-01) Khantha, Mahadevan; Pope, David P; Vitek, Vaclav
We propose a new model for the brittle-to-ductile transition based on the Kosterlitz-Thouless concept of dislocation screening. In this model, thermal fluctuations assisted by the applied stress drive the spontaneous generation of dislocations and the instability occurs well below the melting temperature. In the limit of zero stress, our model reduces to the Kosterlitz-Thouless theory of the melting transition, and, in the opposite limit of zero temperature, we obtain the Rice-Thomson result for the brittle-to-ductile transition.