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Charles Oppenheim Huw Alexander Charles Oppenheim Cliff Morgan 《Learned Publishing》2007,20(2):156-158
Open Access: Key Strategic, Technical and Economic Aspects Edited by Neil Jacobs Chandos Publishing, 2006. 250 pp. ISBN 1‐84334‐203‐0, £39.95, pbk ISBN 1‐84334‐204‐9, £57.00, hbk Selling Rights, 5th edn Lynette Owen Routledge, 2006. 384 pp. ISBN 978‐0‐415‐36280‐1, £75.00 hbk ISBN 978‐0‐415‐38652‐4, £29.95 pbk Bound by Law? Tales from the Public Domain by Keith Aoki, James Boyle and Jennifer Jenkins Duke Law School Center for the Study of the Public Domain, 2006. 76 pp. ISBN 0‐974‐15531‐4, $5.95, pbk. Freely available online at http://www.law.duke.edu/cspd Digital Preservation Marilyn Deegan Simon Tanner Facet Publishing, 2006, Digital Futures Series. 288 pp. ISBN 978‐1‐85604‐485‐1, £39.95, hbk. 相似文献
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Larsen GE George JD Alexander JL Fellingham GW Aldana SG Parcell AC 《Research quarterly for exercise and sport》2002,73(1):66-72
The purpose of this study was to develop a submaximal, 1.5-mile endurance test for college-aged students using walking, jogging, or running exercise. College students (N = 101: 52 men, 47 women), ages 18-26years, successfully completed the 1.5-mile test twice, and a maximal graded exercise test. Participants were instructed to achieve a "somewhat hard" exercise intensity (rating of perceived exertion = 13) and maintain a steady pace throughout each 1.5-mile test. Multiple linear regression generated the following prediction equation: VO2 max = 65.404 + 7.707 x gender (1 = male; 0 =female) - 0.159 x body mass (kg) - 0.843 x elapsed exercise time (min; walking, jogging orrunning). This equation shows acceptable validity (R = .86, SEE = 3.37 ml x kg(-1) min(-1)) similar to the accuracy of comparable field tests, and reliability (ICC = .93) is also comparable to similar models. The statistical shrinkage is minimal (R(press) = 0.85, SEE(press) = 3.51 ml x kg(-) x min(-1)); hence, it should provide comparable results when applied to other similar samples. A regression model (R =.90, and SEE = 2.87 ml x kg(-1) min(-1)) including exercise heart rate was also developed: VO2 max = 100.162 +/- 7.301 x gender(1 = male; 0 =female) - 0.164 x body mass (kg) - 1.273 x elapsed exercise time -0.156 x exercise heart rate, for those who have access to electronic heart rate monitors. This submaximal 1.5-mile test accurately predicts maximal oxygen uptake (VO2max) without measuring heart rate and is similar to the 1.5-mile run in that it allowsfor mass testing and requires only a flat, measured distance and a stopwatch. Further, it can accommodate a wide range of fitness levels (from walkers to runners). 相似文献
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Dannecker EA Hausenblas HA Connaughton DP Lovins TR 《Research quarterly for exercise and sport》2003,74(3):236-247
The purpose of this study was to examine evidence for the validity of a stages of change measure of the Transtheoretical Model for exercise behavior. Participants were 152 university students (53.3% women, 71.6% Caucasian, M age = 19.18 years) who completed processes of change, self-efficacy, decisional balance, stages of change, and exercise behavior questionnaires as well as a maximal treadmill test. Participants in the action and maintenance stages had the highest strenuous (PC/C/P < A/M) and moderate (PC/C < A/M) self-reported exercise behavior. Those in the maintenance stage had the highest estimated aerobic fitness (PC/P < MA). The differences between the early stages (PC, C, and P) and the later stages (A and M) as described by the first function were primarily due to the behavioral process of change. The differences between the extreme stages (PC and M) and the middle stages (C, P, and A) were due to the experiential processes of change and the pros of decisional balance. The hypothesized patterns of stage differences were partially supported. Failure to obtain full support may have been due to methodological issues or inherent difficulties in detecting evidence for the validity of stages of change measures. 相似文献
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