IX. RISK, CAUSATION, MEDIATION, AND MODERATION     

Robert Kumsta  Michael Rutter  Suzanne Stevens  Edmund J. Sonuga‐Barke 《Monographs of the Society for Research in Child Development》2010,75(1):187-211

  相似文献   

BOOK REVIEWS     

Trevor Davies  Dean Garratt  Richard Bates  Jo Westbrook  Peter Stevens  John Pryor 《British Educational Research Journal》2010,36(1):163-172

  相似文献   

Symposium on reasearch and utilization of educational media for teaching the deaf. The history of America--a multi-media approach     

R W Meisegeier  R P Stevens 《American annals of the deaf》1968,113(5):1015-1019

  相似文献   

The impact of the coronavirus disease 2019 pandemic on physical activity in U.S. children     

Kirsten Tulchin-Francis  Wilshaw Stevens  Jr.  Xiangli Gu  Tao Zhang  Heather Roberts  Jean Keller  Dana Dempsey  Justine Borchard  Kelly Jeans  Jonathan VanPelt 《运动与健康科学(英文)》2021,10(3):323

BackgroundDaily moderate-to-vigorous physical activity (MVPA) is vital to the physical, mental, and social well-being of children. Early restrictions during the coronavirus disease 2019 (COVID-19) pandemic included the closure of schools and physical activity (PA) amenities across the US. This study aimed to examine the impact of the pandemic on the PA and play behavior of U.S. children and to provide evidence-based recommendations to improve their PA.MethodsA cross-sectional, online, parent-reported survey was conducted of children aged 3–18 years between April and June 2020 to assess light PA and MVPA using a modified Godin Leisure-Time Exercise Questionnaire. Additional items included family/child socioeconomic demographics, child adaptability to the pandemic, and community access. The survey was shared through social media and snowball sampling distribution.ResultsAnalysis of 1310 surveys indicated child PA scores declined significantly during the pandemic (from 56.6 to 44.6, max 119, p < 0.001). Specifically, MVPA score decreased (from 46.7 to 34.7, max 98, p < 0.001) while light PA remained the same. Age-based changes were seen in the quantity, variety, and intensity of PA, with the lowest pandemic-related impact seen in preschoolers and the highest in high schoolers (–4.7 vs. –17.2, p < 0.001). Community-based peer PA decreased across all age groups.ConclusionThis study shows decreased PA levels in U.S. children, according to parent reporting, during the COVID-19 pandemic. Recommendations for community leaders, educators, and parents to improve PA in children are provided. With continued spread of COVID-19, these results and recommendations may be imperative to the physical well-being of U.S. children.  相似文献   

Working in an Open Tech Project and the Open University: some reflections     

Marion Phillips  Valda Stevens 《Open Learning》2013,28(3):38-42

  相似文献   

Use of hot-wire instruments as shunt ammeters     

J.Franklin Stevens 《Journal of The Franklin Institute》1900,150(5):394-396

  相似文献   

SENCos Sharing Questions and Solutions: How to Make a More Convenient Phone Call     

Klaus Wedell  Chris Stevens  Terry Waller  & Lydia Matheson 《British Journal of Special Education》1997,24(4):167-170

Klaus Wedell, a project consultant, and members of the Special Educational Needs Co-ordinator (SENCo) Project at the National Council for Educational Technology (NCET), Chris Stevens (Manager for Special Needs), Terry Waller (Senior Project Officer) and Lydia Matheson (Information Officer) report on the initial findings of the Project.  相似文献   

Impact of changing health care economics on Michigan hospital libraries: report of a survey     

S R Stevens 《Bulletin of the Medical Library Association》1990,78(2):140-145

In an attempt to determine how efforts to contain the soaring cost of U.S. health care in the 1980s have affected the size and stature of Michigan hospital libraries, a survey was sent out in April 1988 to 156 hospitals across the state. Fifteen of the 97 responding institutions did not maintain libraries during the survey period and were subsequently excluded from the study. Total FTEs in the 82 responding libraries decreased by 6.1%. In the 69 libraries reporting budget data, materials budgets increased, but by less than 7% a year. Eighteen of the 82 libraries had positions reclassified, with 12 (14.6%) assigned downgrades. The trend toward reduced size and perceived value of hospital libraries that emerged from the survey points to the need for regular collection of comprehensive hospital library statistics to assist hospital librarians in effective direction of their profession's course.  相似文献   

Kinematic analyses of seated throwing activities with and without an assistive pole     

Brendan Burkett  Mark Connick  Mark Sayers  Luke Hogarth  Tom Stevens  Mike Hurkx  Sean Tweedy 《Sports Engineering》2017,20(2):163-170

In Paralympic seated throwing events, the athlete can throw with and without an assistive pole. This study aimed to identify and compare performance-related kinematic variables associated with both seated throwing techniques. Twenty-nine non-disabled males (21.9 ± 2.6 years) performed 12 maximal throws using a 1-kg ball in two conditions (no-pole and pole). Automatic 3D-kinematic tracking (150 Hz) and temporal data were acquired. There was no significant difference between ball speeds at the point of release between conditions (no-pole = 12.8 ± 1.6 m/s vs. pole = 12.9 ± 1.5 m/s). There were four kinematic variables that were strongly correlated with ball speed when throwing with or without an assistive pole. These variables were elbow flexion at the start phase (pole r = .39 and no-pole r = .41), maximum shoulder external rotation angular velocity during the arm cocking phase (pole r = .42), maximum shoulder internal rotation angular velocity during the arm acceleration phase (pole r = .47), and should internal rotation angular velocity at the instant of ball release (pole r = .40). The pole clearly influenced the throwing technique with all four strongly correlated variables identified in this condition, compared to only one during the no-pole condition. When using the pole, participants produced significantly higher shoulder internal rotation angular velocities during the arm acceleration phase (pole = 367 ± 183°/s vs. no-pole = 275 ± 178°/s, p < .05) and at the instant of ball release (pole = 355 ± 115°/s vs. no-pole = 264 ± 120°/s, p < .05), compared to throwing without the pole. These findings have implications for the development of evidence-based classification systems in Paralympic seated throwing, and facilitate research that investigates the impact of impairment on seated throwing performance.  相似文献   

Primary grade student reports for teacher evaluation     

Kenneth D. Peterson  Amy Driscoll  Dannelle Stevens 《Journal of Personnel Evaluation in Education》1990,4(2):165-173

The improvement of teacher evaluation is an important theme in current public school reform efforts. One change, suggested by a number of researchers, is to gather more lines of evidence or perspectives of teacher performance for decision making. Student views, commonly used in higher education, are advocated as one data source about teacher quality. Although it is clear that students of all ages can provide some perspective on teacher performance, substantial questions remain about using the views of young pupils.The purpose of this study was to empirically examine a sample of student reports of teacher performance from kindergarten through second grade. The analysis used procedures developed for student rating forms in higher education. The objective was to advance understanding and practice about effective teacher evaluation, specifically in the use of pupil report data.  相似文献