Biomechanical analysis of the different classifications of the Functional Movement Screen deep squat test     

Robert J. Butler  Phillip J. Plisky  Corey Southers  Christopher Scoma  Kyle B. Kiesel 《Sports biomechanics / International Society of Biomechanics in Sports》2013,12(4):270-279

The purpose of this study is to examine the peak sagittal plane joint angles and joint moments of the lower extremity during the deep squat (DS) movement of the Functional Movement Screen (FMS) to assess differences between the classifications (1,2,3). Twenty-eight participants volunteered for the study and were screened to assess their FMS score on the DS task. All participants underwent a quantitative movement analysis performing the FMS DS movement at a self-selected speed. The participants in Group 3 exhibited greater dorsiflexion excursion compared to those in Group 1. Participants in Group 3 had greater peak knee flexion and knee flexion excursion than those in Group 2 who exhibited more than the participants in Group 1. Group 3 also exhibited a greater peak knee extension moment compared to Group 1. At the hip, Groups 3 and 2 exhibited greater peak hip flexion, hip flexion excursion and peak hip extension moment compared to Group 1. Thus, it appears that individuals who score differently on the deep squat as determined by the FMS exhibit differences in mechanics that may be beneficial in assessing strategies for interventions. Future research should assess how fundamental changes in mobility and stability independently affect DS performance.  相似文献   

Governing knowledge in the scientific community: Exploring the role of retractions in biomedicine     

Jeffrey L. Furman  Kyle Jensen  Fiona Murray 《Research Policy》2012,41(2):276-290

Although the validity of knowledge is critical to scientific progress, substantial concerns exist regarding the governance of knowledge production. While research errors are as relevant to the knowledge economy as defects are to the manufacturing economy, mechanisms to identify and signal “defective” or false knowledge are poorly understood. In this paper, we investigate one such institution - the system of scientific retractions. We analyze the universe of peer-reviewed scientific articles retracted from the biomedical literature between 1972-2006 and comparing with a matched control sample in order to identify the correlates, timing, and causal impact of scientific retractions. This effort provides insight into the workings of a distributed, peer-based system for the governance of validity in scientific knowledge. Our findings suggest that attention is a key predictor of retraction - retracted articles arise most frequently among highly-cited articles. The retraction system is expeditious in uncovering knowledge that is ever determined to be false (the mean time to retraction is less than two years) and democratic (retraction is not systematically affected by author prominence). Lastly, retraction causes an immediate, severe, and long-lived decline in future citations. Conditional on the obvious limitation that we cannot measure the absolute amount of false science in circulation, these results support the view that distributed governance systems can be designed to uncover false knowledge relatively swiftly and to mitigate the costs that false knowledge for future generations of producers.  相似文献   

Critical thinking ability in science—What can be measured?     

M. J. Sullivan  C. J. Dawson 《Research in Science Education》1979,9(1):159-167

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Critical thinking in science—Some problems in measurement     

M. J. Sullivan 《Research in Science Education》1977,7(1):131-137

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Books,libraries and electronics: essays on the future of written communication: Efrem Sigelet al., Knowledge Industry Publications,White Plains,New York: 1982, 139 pp. $24.95. ISBN 0-86729-024-2     

Peggy Sullivan 《Information processing & management》1983,19(5):347

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Editorial     

William C. Kyle 《科学教学研究杂志》1994,31(4):321-322

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Library services in theory and context: M.K. Buckland. Pergamon Press,Elmsford, NY (1983), xii+ 203pp., $8.95 (Pb), ISBN 0-08-030133-9.     

Peggy Sullivan 《Information processing & management》1985,21(3):255-256

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Editorial     

William C. Kyle 《科学教学研究杂志》1994,31(1):1-3

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The use of photographs to portray urban ecosystems in six introductory environmental science textbooks     

John P. Sullivan 《科学教学研究杂志》2008,45(9):1003-1020

This study examined how photographs in six introductory environmental science texts portrayed the urban environments in which most U.S. students lived. All photographs from all texts were coded to determine whether they depicted urban areas. The urban photographs were then coded to determine what they communicated about the urban environment. The analysis suggested that the texts in this study, though varied in their portrayal of urban ecosystems, did address many of the environmental issues that affected the city. However, urban examples were rarely used to illustrate general ecological concepts that applied to all ecosystems (i.e., biodiversity or evolution). The author contended that “sense of place” theories indicated that more photographs should be dedicated to portraying urban environments as functioning ecosystems. © 2008 Wiley Periodicals, Inc. J Res Sci Teach 45: 1003–1020, 2008  相似文献   

The Sub‐Subaltern Monster: Imperialist Hegemony and the Cinematic Voodoo Zombie     

Kyle Bishop 《Journal of American culture (Malden, Mass. : 2003)》2008,31(2):141-152

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