1 - 25 of 3
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 1 |
 |
landesman test.pdf | Rail-volution 2005, September 8-10, 2005. Salt Lake City, Utah. Workshop Summaries. | Transportation; Community development; Public transportation | 2006-11-10 | |
| 2 |
 |
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 |
| 3 |
 |
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 |
1 - 25 of 3