Using Lotus Domino Discussion Databases to Support Problem-Based Learning

Management education is undergoing significant transformations. Many business schools have started the process of redesigning curriculums and instructional methods at both undergraduate and graduate levels. Many educational reengineering efforts are supported by the use of Web-based technologies. This paper describes some preliminary results of using Lotus Domino server technology and Lotus Domino discussion databases to support a problem-based collaborative learning program. The purpose of the paper is to share our experience with other universities that are interested in using web-based groupware technology as a tool to augment students’ learning. It also serves as a starting point for further investigating the impact of web- based groupware technology on computer-mediated collaborative learning

Poems

AS SEEDS BETWEEN TEETH SPLIT FROM YO

Efficient Parallel Engineering Computing on Linux Workstations

A C software module has been developed that creates lightweight processes (LWPs) dynamically to achieve parallel computing performance in a variety of engineering simulation and analysis applications to support NASA and DoD project tasks. The required interface between the module and the application it supports is simple, minimal and almost completely transparent to the user applications, and it can achieve nearly ideal computing speed-up on multi-CPU engineering workstations of all operating system platforms. The module can be integrated into an existing application (C, C++, Fortran and others) either as part of a compiled module or as a dynamically linked library (DLL)

Oxygen-vacancy-mediated Negative Differential Resistance in La and Mg co-substituted BiFeO3 Thin Film

The conductive characteristics of Bi0.9La0.1Fe0.96Mg0.04O3(BLFM) thin film are investigated at various temperatures and a negative differential resistance (NDR) is observed in the thin film, where a leakage current peak occurs upon application of a downward electric field above 80 oC. The origin of the NDR behavior is shown to be related to the ionic defect of oxygen vacancies (VO..) present in the film. On the basis of analyzing the leakage mechanism and surface potential behavior, the NDR behavior can be understood by considering the competition between the polarized distribution and neutralization of VO..

Guided Assembly of Nanostructures via Elastic Interactions

A solid solution can spontaneously separate into phases that self-assemble into patterns. This process can be guided via external fields to form ordered micro- and nanostructures. In this paper, we demonstrate that notions of interaction energies provide powerful insights into the coupling of these fields with the properties of the alloy. A phase-field model is developed that incorporates chemical, interfacial, and elastic energies, including heterogeneous elastic properties, and couples naturally to externally imposed mechanical fields. Aggregation in bulk and in thin films under patterned external load is investigated. The kinetics and morphology of phase separation are shown to depend significantly on elastic properties of the system, which include elastic heterogeneity and the misfit or transformation strain. Eshelby-type asymptotic estimates for interaction energies are shown to be very useful in understanding and predicting the trends observed from the simulations