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81.
82.
Timothy P. Olsen Peter W. Hewson Lyman Lyons 《International Journal of Science Education》2013,35(7):775-790
The central question facing humankind is 'What kind of society are we to have?' We argue that in order to begin to answer this question, citizens need to recognize that one of the driving forces determining our society is that science is a human social activity like any other. This flies in the face of much of the rhetoric and ideology about science - the stories and myths of formal and informal education. We wish to encourage both a socially responsible science and a public mindful of its strengths and weaknesses. We explore two case studies to illustrate our concerns. These are the construction of knowledge about Acquired Immune Deficiency Syndrome (AIDS), and the social construction of safety standards for exposure to low-level ionizing radiation. These two health-related controversial scientific issues illustrate the problematic nature of much of science and the implications for the public at large. 相似文献
83.
Laura Jonker Marije T. Elferink-Gemser Tynke T. Toering James Lyons Chris Visscher 《Journal of sports sciences》2013,31(14):1605-1614
Abstract Although elite athletes have been reported to be high academic achievers, many elite soccer players struggle with a stereotype of being low academic achievers. The purpose of this study was to compare the academic level (pre-university or pre-vocational) and self-regulatory skills (planning, self-monitoring, evaluation, reflection, effort, and self-efficacy) of elite youth soccer players aged 12–16 years (n = 128) with those of 164 age-matched controls (typical students). The results demonstrate that the elite youth soccer players are more often enrolled in the pre-university academic system, which means that they are high academic achievers, compared with the typical student. The elite players also report an increased use of self-regulatory skills, in particular self-monitoring, evaluation, reflection, and effort. In addition, control students in the pre-university system had more highly developed self-regulatory skills than those in the pre-vocational system, whereas no difference was observed within the soccer population. This suggests that the relatively stronger self-regulatory skills reported by the elite youth soccer players may be essential for performance at the highest levels of sport competition and in academia. 相似文献
84.
Peter Larson Erin Higgins Justin Kaminski Tamara Decker Janine Preble Daniela Lyons 《Journal of sports sciences》2013,31(15):1665-1673
Abstract Although the biomechanical properties of the various types of running foot strike (rearfoot, midfoot, and forefoot) have been studied extensively in the laboratory, only a few studies have attempted to quantify the frequency of running foot strike variants among runners in competitive road races. We classified the left and right foot strike patterns of 936 distance runners, most of whom would be considered of recreational or sub-elite ability, at the 10 km point of a half-marathon/marathon road race. We classified 88.9% of runners at the 10 km point as rearfoot strikers, 3.4% as midfoot strikers, 1.8% as forefoot strikers, and 5.9% of runners exhibited discrete foot strike asymmetry. Rearfoot striking was more common among our sample of mostly recreational distance runners than has been previously reported for samples of faster runners. We also compared foot strike patterns of 286 individual marathon runners between the 10 km and 32 km race locations and observed increased frequency of rearfoot striking at 32 km. A large percentage of runners switched from midfoot and forefoot foot strikes at 10 km to rearfoot strikes at 32 km. The frequency of discrete foot strike asymmetry declined from the 10 km to the 32 km location. Among marathon runners, we found no significant relationship between foot strike patterns and race times. 相似文献
85.
AbstractMovement patterns in elite men’s soccer have been reported in depth, but less research exists for women’s soccer. Aims of the study were to identify the movement profiles of elite women soccer players in international competition and examine the effect the level of opposition, based on Federation Internationale de Football Association (FIFA) rankings, had on the physical demands of the game. MinimaxX athlete tracking devices were used by 15 players during 13 international matches against opponent teams of varying ability. Total distance covered averaged 9292 ± 175 m. There was a decrease in high-intensity running (HIR) in the 60- to 75-min and 75- to 90-min periods compared to the 0- to 15-min period of 22.4% and 26.1%, respectively (P = 0.022, P = 0.004) although sprint distances remained unchanged across game periods. HIR distances covered were significantly greater for midfielders versus defenders, while defenders had lower sprinting compared to both midfielders and attackers. Stronger opponents elicited less HIR and greater low-speed activity (LSA) compared to playing teams of similar or lower ranking. These results are important to coaches to prepare players for international competition and show the differing demands required depending on the ability of the opponents. 相似文献
86.
Dolan E O'Connor H McGoldrick A O'Loughlin G Lyons D Warrington G 《Journal of sports sciences》2011,29(8):791-799
In this study, we describe diet and lifestyle practices of professional jockeys. Participants completed a 59-item nutrition, lifestyle, and health questionnaire (n = 21) and a 7-day estimated food diary (n = 18). Acute weight loss strategies included the use of saunas (86%), exercising to induce sweating (81%), and restricted energy intake (71%). Of the smokers (38%), 56% used smoking to control weight. Most (86%) jockeys reported attaining a 2-kg weight loss for racing (if required) 24-48 h before or on the designated race-day. Mean daily energy intake (1803 ± 564 kcal) was low and appeared to provide an insufficient availability of energy for sustainment of usual daily and metabolic processes. Carbohydrate intake (3.7 ± 1.3 g · kg?1) was below recommendations for athletes. A substantial proportion of jockeys failed to meet the estimated average requirement and lower threshold intake for a number of micronutrients. Jockeys consumed well below (0-2) the recommended five daily servings of fruit and vegetables set by the World Health Organization. Pressures of the jockey lifestyle and rigid weight limits appear to encourage unhealthy weight management practices in this group and may risk long term-health. 相似文献
87.
This article updates the findings from a study by Hal Kirkwood in 2000 of the organization and content of academic business library Web sites. The authors examined 75 sites, focusing on five general aspects of the sites: organization, terminology, instructional elements, integration of resources across formats, and annotations. Results of the study show that business library Websites have dramatically improved in the 7 years since the original study. 相似文献
88.
Oscar Ogg Douglass McMurtrie John Adamson Jim Allee Hart Louis M. Lyons Michael L. Johnson 《Communication Booknotes Quarterly》2013,44(5):74-76
Oscar Ogg, The 26 Letters (New York: Crowell, 1971—$7.50) Douglass McMurtrie with the assistance of John Adamson (eds) The Invention of Printing: A Bibliography (New York: Burt Franklin, 1970—price not known) Jim Allee Hart, Views on the News: The Developing Editorial Syndrome 1500-1800 (Carbondale: Southern Illinois University Press, 1970—$7.95) Louis M. Lyons, Newspaper Story: One Hundred Years of the Boston Globe (Cambridge: Harvard University Press, 1971—$9.95) Michael L. Johnson, The New Journalism: The Underground Press, the Artists of Nonfiction, and Changes in the Established Media (Lawrence: University Press of Kansas, 1971—$6.95/2.95) 相似文献
89.
90.
This study examines local research guides created by academic business librarians to assist patrons with researching the communities (towns, cities, and regions) where their schools are located. A key finding is that only 33% of the libraries surveyed provide guides to local research, while 80% provide guides to international research. 相似文献