Teacher perceptions of temperament characteristics of children classified as learning disabled     

C D Cardell  R S Parmar 《Journal of learning disabilities》1988,21(8):497-502

  相似文献   

Morphological proportionality in elite age group North American divers.     

D Sovak  M R Hawes  K Plant 《Journal of sports sciences》1992,10(5):451-465

The purpose of this investigation was to describe the morphological parameters that characterize elite age group divers. Comparisons are made to normative age group data from the Coquitlam Growth Study and the constancy of important characteristics from age group to age group is examined. Data were collected on 27 male and 28 female elite divers who participated in the 1990 North American Age Group Diving Championships. Body build, body composition and skinfold corrected diameters were determined from 36 anthropometric parameters and analysed by ANOVA, t-test and Phantom z-scores procedures. All age groups except the 14- to 15-year-old males were significantly (P < or = 0.05) shorter than their norms but recorded higher androgyny index values. The estimated relative muscle mass increased significantly (P < or = 0.05) with age for males at all ages (40.8-46.3%). The 16- to 18-year-old females had a significantly (P < or = 0.05) larger relative muscle component compared to the younger age groups (40.1-38.4%). When normalized for height, active tissue development of the extremities was comparable between the sexes except in the forearm. The results indicate that at all age levels short stature is an important characteristic for divers. Analysis of regional active tissue development provides further insight into sport-specific prerequisites for success at elite levels.  相似文献   

Longitudinal change in throwing performance: gender differences     

K R Nelson  J R Thomas  J K Nelson 《Research quarterly for exercise and sport》1991,62(1):105-108

  相似文献   

The Reverend Gershom Bulkeley of Connecticut,an Eminent Clerical Physician     

Steiner WR 《Medical Library and Historical Journal》1904,2(2):91-103

  相似文献   

The conditions of activation of unfertilized starfish eggs by the electric current     

R.S. Lillie  Ware Cattell 《Journal of The Franklin Institute》1923,195(6):859-860

  相似文献   

Report of The Committee on a Coordinated Abstracting Service for Clinical Medicine and a Summary of Two Conferences on Scientific Abstracting Held in Paris,in April, 1948, at UNESCO House     

Fair E  Cunningham ER 《Bulletin of the Medical Library Association》1948,36(4):379-408

  相似文献   

Library-Bibliographical Classification (LBC): General characteristics and basic functions and prospects for development     

E. R. Sukiasyan 《Scientific and Technical Information Processing》2008,35(1):55-61

This paper considers the background of the Library-Bibliographic Classification as the national classification system of Russia, and its history and application in the USSR. It gives the general characteristic of the LBC structure, content and system of designations, as well as the state of its present updating.  相似文献   

Elite football on artificial turf versus natural grass: movement patterns, technical standards, and player impressions     

Andersson H  Ekblom B  Krustrup P 《Journal of sports sciences》2008,26(2):113-122

The aim of the present study was to examine the movement patterns, ball skills, and the impressions of Swedish elite football players during competitive games on artificial turf and natural grass. Time - motion analyses (36 observations) and technical analyses (16 team observations) were performed and 72 male and 21 female players completed a questionnaire. No differences were observed between artificial turf and natural grass in terms of total distance covered (mean 10.19 km, s = 0.19 vs. 10.33 km, s = 0.23), high-intensity running (1.86 km, s = 0.10 vs. 1.87 km, s = 0.14), number of sprints (21, s = 1 vs. 22, s = 2), standing tackles (10, s = 1 vs. 11, s = 1) or headers per game (8, s = 1 vs. 8, s = 1), whereas there were fewer sliding tackles (P < 0.05) on artificial turf than natural grass (2.1, s = 0.5 vs. 4.3, s = 0.6). There were more short passes (218, s = 14 vs. 167, s = 12) and midfield-to-midfield passes (148, s = 11 vs. 107, s = 8) (both P < 0.05) on artificial turf than natural grass. On a scale of 0-10, where 0 = "better than", 5 = "equal to", and 10 = "worse than", the male players reported a negative overall impression (8.3, s = 0.2), poorer ball control (7.3, s = 0.3), and greater physical effort (7.2, s = 0.2) on artificial turf than natural grass. In conclusion, the running activities and technical standard were similar during games on artificial turf and natural grass. However, fewer sliding tackles and more short passes were performed during games on artificial turf. The observed change in playing style could partly explain the male players' negative impression of artificial turf.  相似文献   

Electromagnetic mechanism,with special reference to telegraphic work     

R.A. Fessenden 《Journal of The Franklin Institute》1900,150(1):62-80

  相似文献   

Resins for purity     

R.H. Oppermann 《Journal of The Franklin Institute》1941

  相似文献