We identify three goals for the graphical user interface (GUI) of a network simulation environment: user friendliness, model re-usability, and application extensibility. We address the user-friendliness issue by proposing a simple yet efficient approach to setup parameters for the simulation models. We address the application extensibility issue with a two-layer GUI architecture. The two layers...

We have gathered protocols of subjects in their first 30 hours of leorning LISP. The processes by which subjects write LISP functions to meet problem specifications has been modeled in a simulation program called GRAPES (Go01 Restricted Production System). The GRAPES system embodies the goal-restricted architecture for production systems as specified in the ACT* theory (Anderson, 1983). We comp...

Minimal generators (MGs) are the smallest ones (w.r.t. the number of items) among equivalent itemsets sharing a common set of objects, while their associated closed itemset (CI) is the largest one. The pairs composed by MGs and their associated CI divide the itemset lattice into distinct equivalence classes. Such pairs were at the origin of various works related to generic association rule base...

New Approaches to Weighted Frequent Pattern Mining. (December 2005) Unil Yun, B.S., Hong Ik University; M.S., Korea University Chair of Advisory Committee: Dr. John J. Leggett Researchers have proposed frequent pattern mining algorithms that are more efficient than previous algorithms and generate fewer but more important patterns. Many techniques such as depth first/breadth first search, use o...

using piezoelectric patches the stress concentration around a hole on a plate under tension is reduced and controlled. to attain the reduction in stress two placements for piezoelectric patches is investigated. the first location is top/bottom of the hole with compression induced strain and the second is left/right of the hole with tension induced strains to control the stress flow. the result ...

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