Geoff Stoker

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Assessment of student learning outcomes is a key process used in education to both evaluate students' level of achievement and to identify opportunities for continuous improvement. The most prevalent technique for analyzing data collected from direct assessment methods is to distill the data to a single measure of central tendency, typically the arithmetic(More)
Information technology courses often require the use of software and hardware to support classroom learning. These systems can assist in achieving the learning objectives for a course through classroom problems and laboratory exercises. The procurement and maintenance of these systems can be a challenge even for well resourced organizations. In this paper(More)
Dynamic performance analysis of long-running programs in the high performance computing community increasingly relies on statistical profiling techniques to provide performance measurement results. Systematic sampling rates used to generate the statistical data are typically selected in an ad hoc manner with little formal regard for the context provided by(More)
In a Computational Grid, or Grid, a user often requires a service to perform an action on his behalf. Currently, the user has few options but to grant the service the ability to wholly impersonate him, which opens the user to seemingly unbounded potential for security breaches if the service is malicious or errorful. To address this problem, eight(More)
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