Filters: Date: "2006-11-10" Collection: ir_uspace
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| Creator | Title | Description | Subject | Date | ||
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landesman test.pdf | Rail-volution 2005, September 8-10, 2005. Salt Lake City, Utah. Workshop Summaries. | Transportation; Community development; Public transportation | 2006-11-10 | |
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Boulos, Solomon; Shirley, Peter S. | Packet-based whitted and distribution ray tracing | Much progress has been made toward interactive ray tracing, but most research has focused specifically on ray casting. A common approach is to use ?packets? of rays to amortize cost across sets of rays. Little is known about how well packet-based techniques will work for reflection and refractio... | Packet-based whitted ray tracing; Distribution ray tracing; Interactive ray tracing | 2006-11-10 |
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Zick, Cathleen D.; Smith, Ken R.; Brown, Barbara B.; Fan, Jessie Xiaojing; Kowaleski-Jones, Lori | Physical activity during the transition from adolescence to adulthood | Background: We examine how age, life course roles, and contextual variables relate to both the composition and the overall level of physical activity in late adolescence and early adulthood. Methods: Data on 15-29 year old respondents in the 2003 American Time Use Survey are used to estimate mul... | Time use; Active leisure; Team sports; Active transportation | 2006-11-10 |
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