Eric T. Roberts

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Computational scientists often develop large models and codes intended to be used by larger user communities or for repetitive tasks such as parametric studies. Lowering the barrier of entry for access to these codes is often a technical and sociological challenge. Portals help bridge the gap because they are well known interfaces enabling access to a large(More)
In this paper we report assessment results from an ongoing design experiment intended to provide a single school system with a sequence of high school level computer science courses. We share data on students' learning as a function of the first course and of their pre-course history of technological experience. In addition, in order to go beyond(More)
Despite the extraordinary growth in the volume and variety of material available on the World Wide Web, the Internet revolution has had surprisingly little effect on the delivery of informatics education. In this paper, we present an entirely web-based programming environment called StanfordKarel that introduces students to the fundamental techniques of(More)
RATIONALE Stroke and vascular risk factors disproportionately affect minority populations, with Blacks and Hispanics experiencing a 2·5- and 2·0-fold greater risk compared with whites, respectively. Patients with transient ischemic attacks and mild, nondisabling strokes tend to have short hospital stays, rapid discharges, and inaccurate perceptions of(More)
BACKGROUND AND PURPOSE Less than 25% of stroke patients arrive to an emergency department within the 3-hour treatment window. Stroke Warning Information and Faster Treatment (SWIFT) compared an interactive intervention (II) with enhanced educational (EE) materials on recurrent stroke arrival times in a prospective cohort of multiethnic stroke/transient(More)
BACKGROUND The Multi-Ethnic Study of Atherosclerosis (MESA) showed that the addition of coronary artery calcium (CAC) to traditional risk factors improves risk classification, particularly in intermediate risk asymptomatic patients with LDL cholesterol levels <160 mg/dL. However, the cost-effectiveness of incorporating CAC into treatment decision rules has(More)