Repeated retention testing effects do not generalize to a contextual interference protocol     

Fairbrother JT  Shea JB  Marzilli TS 《Research quarterly for exercise and sport》2007,78(5):465-475

Three experiments examined repeated retention testing effects in a contextual interference (CI) protocol. Retention was assessed at 10 min and 24 hr following acquisition or at just 24-hr for the one-test conditions. Experiments 1 and 2 used speeded-response key-pressing tasks. Dependent measures were total time and errors. Experiment 3 used sequential-timing tasks. Dependent measures were absolute error and absolute constant error Results revealed CI effects in each experiment. Repeated retention testing effects were not found in Experiments 1 and 3. Experiment 2 revealed superior performance by the two-test condition compared to the one-test condition. This result was qualified by possible practice effects during the 10-min test. It was concluded that repeated retention testing does not present problems for most studies of CI.  相似文献   

An evaluation of three authoring-language software packages     

R. Scott Grabinger 《TechTrends》1985,30(4):20-23

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On railway accidents     

Capt.Douglas Galton 《Journal of The Franklin Institute》1862,74(2):78-81

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The reduction of the brain drain: Problems and policies     

J. Douglas Muir 《Minerva》1969,7(3):494-498

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Braided composite materials for the production of lightweight, high rigidity golf shafts   总被引：1，自引：1，他引：0  

Douglas Steven S. Swanek  Jason Carey 《Sports Engineering》2007,10(4):195-208

Braiding is not currently used in the production of golf shafts. The objective of this work was to develop, through a modelling process consisting of altering lamina sequence, a golf shaft, using braided laminas, which would have mass, stiffness and torque comparable to commercially available composite and steel shafts. A 2D conical braided composite model was previously developed and validated to predict elastic constants of braided closed meshed structures. Energy methods were used to calculate the stiffness and torque of shafts using prescribed industry approaches. Shaft mass was calculated based on geometry and density of constitutent materials. Modelled shafts had both braided and unidirectional layers and compared favourably with or were better than commercially available composite and steel shafts in terms of deflection force and twist angle; they had the same weight as composite shafts but were much lighter than steel shafts. If these findings are verified, braided composites would be a viable and effective approach to the design of future golf shafts.  相似文献   

Meditations in Black: The Vietnam Veterans Memorial     

Grant F. Scott 《Journal of American culture (Malden, Mass. : 2003)》1990,13(3):37-40

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St. Paul,the man and the teacher     

C. Anderson Scott M.A. D.D. 《British Journal of Religious Education》1938,5(3):125-133

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Introduction: education policy analysis for a complex world: poststructural possibilities     

Kalervo N. Gulson  Amy Scott Metcalfe 《Critical Studies in Education》2015,56(1):1-4

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Culturally responsive computing: a theory revisited     

Kimberly A. Scott  Kimberly M. Sheridan  Kevin Clark 《Learning, Media and Technology》2015,40(4):412-436

Despite multiple efforts and considerable funding, historically marginalized groups (e.g., racial minorities and women) continue not to enter or persist in the most lucrative of fields – technology. Understanding the potency of culturally responsive teaching (CRT), some technology-enrichment programs modified CRP principles to establish a culturally responsive computing (CRC) experience for disenfranchised groups. We draw from our respective praxes developing two such initiatives and reconceptualize CRC as a heuristic. In this theoretical article, we offer a more nuanced vision of CRC considering intersectionality, innovations, and technosocial activism. Implications for the newly defined tenets consider programmatic, theoretical, and methodological concerns.  相似文献   

Lifesource XL-18 pedometer for measuring steps under controlled and free-living conditions     

Sam Liu  Dina Brooks  Scott Thomas  Gunther Eysenbach  Robert Peter Nolan 《Journal of sports sciences》2015,33(10):1001-1006

The primary aim was to examine the criterion and construct validity and test–retest reliability of the Lifesource XL-18 pedometer (A&D Medical, Toronto, ON, Canada) for measuring steps under controlled and free-living activities. The influence of body mass index, waist size and walking speed on the criterion validity of XL-18 was also explored. Forty adults (35–74 years) performed a 6-min walk test in the controlled condition, and the criterion validity of XL-18 was assessed by comparing it to steps counted manually. Thirty-five adults participated in the free-living condition and the construct validity of XL-18 was assessed by comparing it to Yamax SW-200 (YAMAX Health & Sports, Inc., San Antonio, TX, USA). During the controlled condition, XL-18 did not significantly differ from criterion (P > 0.05) and no systematic error was found using Bland–Altman analysis. The accuracy of XL-18 decreased with slower walking speed (P = 0.001). During the free-living condition, Bland–Altman analysis revealed that XL-18 overestimated daily steps by 327 ± 118 than Yamax (P = 0.004). However, the absolute percent error (APE) (6.5 ± 0.58%) was still within an acceptable range. XL-18 did not differ statistically between pant pockets. XL-18 is suitable for measuring steps in controlled and free-living conditions. However, caution may be required when interpreting the steps recorded under slower speeds and free-living conditions.  相似文献