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Cemal Ozemek Mitchell H. Whaley W. Holmes Finch Leonard A. Kaminsky 《European Journal of Sport Science》2017,17(5):563-570
There have been many conflicting observations between the linear or curvilinear decline in maximal heart rate (HRmax) with age. The aim of this study was to determine if linear or curvilinear equations would better describe the decline in HRmax with age in individuals of differing cardiorespiratory fitness (CRF) levels. Treadmill cardiopulmonary exercise test (CPX) results from participants (1510 men and 1134 women; 18–76 years) free of overt cardiovascular disease were retrospectively examined using cross-sectional and longitudinal study designs. Participants completing ≥2 CPX with ≥1 year between test dates were included in the longitudinal analysis (325 men and 150 women). Linear and quadratic regressions were applied to age and HRmax for the whole cohort and respective CRF groups (high, moderate, and low, relative to age and gender normative values). To test for differences among linear, quadratic, and polynomial equations, the change in R2 (cross-sectional analysis) and Bayesian information criterion (BIC) (longitudinal analysis) from the linear to the more complex models were calculated. The quadratic or polynomial regression in the cross-sectional analysis, marginally improved the variance in HRmax explained by age compared to the linear regression for the whole cohort (0.2%), moderate fit group (0.3%), and low fit group (0.8%). With no improvements in the high fit group. BIC did not improve for any CRF category in the longitudinal analysis. In conclusion, the minimal differences among linear, quadratic, and polynomial equations in the respective CRF groups, emphasizes the use of linear prediction equations to estimate HRmax. 相似文献
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Ethene/norbornene copolymerization by the catalyst system [Me2Si(3-tertBuCp)(NtertBu)]TiCl2/MAO was investigated in detail at 30 °C, 60 °C, and 90 °C. A mass flow controller was used in this work to obtain kinetic
data and investigate temperature's effects on activity, norbornene incorporation, copolymerization parameter, microstructure,
glass transition temperature, and molar masses were described. High copolymerization valuesr
ξ and high alternation are determined. The number of isotactic alternating sequences is much higher than that of the syndiotactic
alternating sequences. 相似文献
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Dana H. Hodgdon Stuart M. Kaminsky Stewart Bronfeld Leonard Maltin Alan Frank Richard Dyer MacCann 《Communication Booknotes Quarterly》2013,44(12):131-132
Dana H. Hodgdon and Stuart M. Kaminsky BASIC FILMMAKING (New York: Arco Publishing, 1982—$12.95/$7.95) Stewart Bronfeld WRITING FOR FILM AND TELEVISION (Englewood Cliffs, NJ: Prentice-Hall, 1981—$11.95) Leonard Maltin TV MOVIES (New York: New American Library, 1982— $4.95) Alan Frank THE HORROR FILM HANDBOOK (Totowa, NJ: Barnes E. Noble Books, 1982—$24.95) Richard Dyer MacCann and Jack C. Ellis CINEMA EXAMINED: SELECTIONS FROM CINEMA JOURNAL (New York: E. P. Dutton, 1982—$9.95 paper) 相似文献
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SCHARLACH Katrin KAMINSKY Walter 《浙江大学学报(A卷英文版)》2007,8(7):987-990
Polyethylene-nanocomposites with CaCO3-weight fractions from 0 to 15 wt.% were prepared by in-situ polymeriza- tion with Me2Si(Ind)2ZrCl2/MAO metallocene catalysts. A high activity especially in the presence of TIBA was observed. The morphology was investigated by using raster electron microscopy (REM) showing that the CaCO3-nanoparticles are uniformly distributed. The melting temperatures and the crystallization temperatures are not much influenced by increasing filler content. 相似文献
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Dore Schary Rosiland Delmar Allen Estrin Stan Brakhage Stuart Kaminsky 《Communication Booknotes Quarterly》2013,44(9-10):183-185
Dore Schary, Heyday (Boston: Little Brown, 1979 -- $14.95) Rosiland Delmar, Joris Ivens: 50 Years of Film-Making (London: British Film Institute, 1979---£2.45) Allen Estrin, The Hollywood Professionals, Volume 6: Capra, Cukor, Brown (South Brunswick: A.S. Barnes, 1980 -- $12.00 hardcover) Stan Brakhage, Film Biographies (Berkeley, California: Netzahualcoyotl Historical Society, 1979 -- $7.95 in paper -- write c/o 2845 Buena Vista Way, Berkeley 94708) Stuart Kaminsky, Coop: The Life and Legend of Gary Cooper (New York: St. Martin's Press, 1980 -- $10.95) 相似文献
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James S. Kaminsky 《Educational studies》1991,17(3):217-232
It would be convenient to pretend that the histories of educational philosophy in Britain and, by extension, the USA and Australia, were responses to a common social and intellectual history but convenience in this case could only be accomplished at the expense of explanatory power. The history of educational philosophy in these three places is parallel but not in common. Philosophy of education in Britain is more closely related to philosophy than is philosophy of education in the USA. Philosophy of education in the USA appropriated the lead of the American Social Science Association and initially retained closer connections with social science than did its English counterpart. Nevertheless, it is argued here that educational philosophy's reference to social science—Victorian and modern—is the missing explanatory element in modem histories of the discipline. The appropriation of education by social science—a common feature of the intellectual history of education in Britain, Australasia, and the USA—leavened the research agenda of educational philosophy in Britain. Peters’ educational work can be best understood as an attempt to reunite education with moral philosophy such that the study of education would resume a profile similar to its nineteenth‐century counterpart, when it was moral philosophy that provided the most interesting discussions of human nature, primitive customs, and social institutions—education among them. 相似文献
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这些运动员证明,并非只有个子高才会表现出色。你是否曾经因为个子矮小而经历过困难的时光?这种情况时常会发生在运动场上。在很多运动项目中,教练和观众们往往认为你长得 相似文献