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Effectiveness of quality physical education in improving students' manipulative skill competency

2002年

作者： mason Charlotte H.

来源：畅想之星图书光盘版（南... 评论

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畅想之星图书光盘版（南通市图书馆镜像）

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Journal of Sport and Health Science 2016年第2期5卷 231-238页

作者： Weiyun Chen Weimo Zhu Steve mason Austin Hammond-Bennett Andrew Colombo-Dougovito School of Kinesiology University of Michigan Kinesiology and Community Health University of Illinois Department of Kinesiology University of Virginia

Purpose： This study aimed to examine the extent to which the quality physical education teaching （QPET） practices contributed to improving 4th- and 5th-grade students＇ manipulative skill competency. Methods： Participants were 9 elementary physical education （PE） teachers and their 4th- and 5th-grade students （n = 2709 3420）. The students＇ skill competency was assessed with 3 manipulative skills using PE metrics assessment rubrics. The PE teachers＇ levels of QPET were assessed by coding 63 videotaped lessons using the assessing quality teaching rubrics （AQTR）, which consisted of 4 essential dimensions including task design, task presentation, class management, and instructional guidance. Codes were confirmed through inter-rater reliability （82.4%, 84.5%, and 94%）. Data were analyzed through descriptive statistics, multiple R2 regression models, and independent sample t tests. Results： This study indicated that the 4 essential dimensions of QPET were all significant contributors to students＇ manipulative skill competency. These predictors were significantly higher for boys than for girls in soccer and striking skills, while they were significantly higher for girls than for boys in throwing skill competency. Of the 4 essential dimensions of QPET, task presentation played the most significant role in contributing to all 3 skill competencies for both boys and girls. Further, students who experienced high QPET were significantly more skillfully competent than those students who did not have this experience. Conclusion： It was concluded that the QPET practices played a significantly critical role in contributing to students＇ manipulative skill competency.

关键词： Assessment of quality teaching Essential dimensions of teaching Manipulative skill competency Skill assessment

Comparison of body weight and food consumption in young adult SD rats

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Comparison of body weight and food consumption in young adul...

Comparison of body weight and food consumption in young adult SD rats

2013年（第三届）中国药物毒理学年会暨药物非临床安全性评价研究论坛

作者： GUO H Sue McPHERSON Steve mason WuXi AppTec Co.Ltd.

An meta-analysis was performed for control animals from over 25 toxicology studies to assess potential differences in body weight gain and food consumption between Sprague-Dawley rats sourced from commercial suppliers in the USA(Charles River-"CR"),***(Vital River-"VR") and Taiwan(BioLasco-"BL").The mean body weight and food consumption was calculated weekly for animals in the age range 6 to 35 *** to approximately 15 weeks of age,CR males were generally lighter than BL males,after this time the growth rate of the CR males appeared to exceed that of those from BL.A similar pattern was seen for female rats with the CR animals exhibiting lower body weight than BL rats before approximately 11 weeks of *** age 11 weeks the CR rats were heavier than BL *** VR animals, initial growth was similar to CR rats,and followed closer to the BL growth rate from approximately week *** general, the CR male and female SD rats grew faster than those from either BL or *** the male rats there were no clear differences in food consumption between CR and BL animals,in comparison food consumption for the VR rats was a little lower. For the females,CR rats tended to show a higher food intake than both BL and VR,with the food for consumption from animals from the latter two sources being generally *** observed differences between the three sources of animals demonstrate the need to be consistent in the source of animals for different studies in toxicology development programs with a single compound,and also the need for maintaining separate back ground data bases.

关键词： body mass food consumption

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Comparison of body weight and food consumption in young adul...

作者： GUO H Sue McPHERSON Steve mason WuXi AppTec Co.Ltd.

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国外城市蔓延控制及对我国的启示

经济地理 2011年第5期31卷 748-753页

作者：孙萍唐莹 Robert J.mason 张景奇东北大学文法学院中国辽宁沈阳110819 天普大学地理与城市事务研究系美国费城19122

城市蔓延给城市可持续发展带来了一系列的负面影响,如何控制城市蔓延已经成为许多国家的规划者面临的挑战。采用文献资料法与定性分析法对城市蔓延内涵和产生原因进行归纳总结,从城市蔓延的控制目的、控制方法和控制效率几个方面对国外... 详细信息

城市蔓延给城市可持续发展带来了一系列的负面影响,如何控制城市蔓延已经成为许多国家的规划者面临的挑战。采用文献资料法与定性分析法对城市蔓延内涵和产生原因进行归纳总结,从城市蔓延的控制目的、控制方法和控制效率几个方面对国外城市蔓延控制研究进行了归纳总结与简要评价。总结出国外城市蔓延控制研究对我国城市蔓延控制的启示:我国城市蔓延产生原因与国外有所不同,调控对象也有所差别;应丰富城市蔓延调控的内涵与目标;应运用综合手段对城市蔓延进行控制;要重视调控政策的实施过程。

关键词：城市蔓延蔓延控制启示圈外

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手持动力工具安全性能的改进

煤矿机电 1989年第6期10卷 41-43页

作者： A M Rushworth S mason 刘守邦

近年来,对井下设备组装、维修、拆卸用的手持动力工具,日益需要,促进了钻、锯、旋、拧、拆卸螺帽,切割线缆工具的开发。较早的研究表明,由于缺乏适用于驱动的电源,没有足够的空间条件等原因,它们潜在的效益未能充分发挥。此外,采用手持... 详细信息

近年来,对井下设备组装、维修、拆卸用的手持动力工具,日益需要,促进了钻、锯、旋、拧、拆卸螺帽,切割线缆工具的开发。较早的研究表明,由于缺乏适用于驱动的电源,没有足够的空间条件等原因,它们潜在的效益未能充分发挥。此外,采用手持动力工具也造成了诸如咬住衣服,出现“反冲”、噪声、震动、发热、工具重、握举费力等问题。其它行业的实践表明。

关键词：手工具动力工具安全性能

利用角色对增强型存取矩阵模型(ATAM)的模拟(英文)

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计算机工程 1999年第S1期25卷 17-23页

作者： Qamar Munawer, Ravi Sandhu(George mason University, Fairfax, VA 22030)

相对于传统的自由选择存取控制（SAC）和强制性存取控制（NIAC），基于角色的存取控制（RBAC）是一种很有前途的选择。在RBAC中，在取许可是与角色相联系的．用户需成为角色的成页以取得角色拥有的存取许可。由于RBAC不项向于某一种策... 详细信息

相对于传统的自由选择存取控制（SAC）和强制性存取控制（NIAC），基于角色的存取控制（RBAC）是一种很有前途的选择。在RBAC中，在取许可是与角色相联系的．用户需成为角色的成页以取得角色拥有的存取许可。由于RBAC不项向于某一种策略，因此可灵活适应不同的安全策略。存取矩阵模型定义了另一种实行安全策略的机制。增强型再取矩阵模型（ATAM）是分类存取矩阵模型（TAM）的一种扩展，它由Sandllu定义并成为该类模型中相当着￡的一种。ATANI通过引入强分类（即各主体或对象一旦生成并属于一种特定类型后不再改变类型）来定义。ATAM就一般性存取控制策略的正则模型而言，已被认为是当今最流行的技术。最后形式化表述了ATAM可由对RBAC元素的适当组合构造来模拟。研究结果证明了RBAC的灵活性和对大范围分布式管理模型的适应性。

关键词：存取矩阵模型角色存取控制

Crescentic dune migration and stabilization： Implications for interpreting paleo-dune deposits as paleoenvironmental records

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Journal of Geographical Sciences 2017年第11期27卷 1341-1358页

作者： XU Zhiwei Joseph A. mason LU Huayu YI Shuangwen ZHOU Yali WU Jiang HAN Zhiyong School of Geographic and Oceanographic Sciences Nanjing University Nanjing 210023 China Department of Geography University of Wisconsin Madison Wl 53706 USA School of Geography and Tourism Shaanxi Normal University Xi'an 710062 China

Paleo-dune deposits have been widely used as a proxy indicator of past dune ac- tivity, which is further used to reconstruct paleoclimates. However, recent studies have criti- cally examined the reproducibility of dune chronologies and the complexity of paleo-dune deposits as paleoenvironmental records. This paper addresses questions on the paleoenvi- ronmental implications of dune chronostratigraphies that have been raised by those reviews, in the specific case of crescentic dunes, using a case study from the Mu Us dune field, north-central China. The processes of turn-over and stabilization of relatively small crescentic dunes are first investigated by observational evidence. In combination with the analysis of a simplified sand preservation model and stratigraphic records, the effect of dune morphody- namics on sand preservation is demonstrated. It is especially evident that thick, nearly in- stantaneously deposited sand units record dune stabilization near the very end of a dune activity episode, while thin sand units may signal the preservation of sand deposited earlier in episodes of activity. Interpreting the distribution of luminescence ages that indicate sand deposition over time is not as simple as assumed in some previous work. Low frequency of sand ages could indicate an interval of either dune field stabilization or extensive dune activity but poor sand preservation. A peak of sand age frequency likely represents a shift in dune field activity towards stabilization, not a peak of active dune extent, especially if it partially overlaps with an independently identified interval of stabilization （e.g. one recorded by pa- leosols）. The nature and magnitude of these biases in the distribution of sand ages over time are strongly affected by the magnitude of net sand accumulation, which is in turn related to sand supply, transport capacity and sand availability, and ultimately climate change. Rela- tively short dune stabilization and turn-over time （101 to 102

关键词： dune activity dune chronologies dune morphodynamics dune turn-over time OSL dating paleoen- vironmental interpretation

Advancement in Indoor Vertical Farming for Microgreen Production

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American Journal of Plant Sciences 2019年第8期10卷 1397-1408页

作者： Preethi Rajan Rajasekaran R. Lada mason T. MacDonald Department of Plant Food and Environmental Sciences Faculty of Agriculture Dalhousie University Truro Truro N.S. Canada

With the growing global urban population and the emergence of megacities, there is a huge demand for arable land to meet the food demand and reduce malnutrition. Conventional agricultural practices lead to deforestation of the land for crop production and agricultural intensification to produce higher yield per unit area. These activities have been established to have negative impact on the environment thereby causing soil and water pollution. It is important to consider the use of vertical farming technology, which utilizes both horizontal and vertical space, and efficiently uses nutrients, water, and time (off season production with artificial lighting) more effectively to produce higher yield per unit volume of space than the conventional outdoor farming. Microgreens are taken into consideration to be grown under innovative vertical farming technology since they are rich in phytonutrients and they can be harvested in a short period of time. This paper reviews the current growing conditions of microgreens in vertical farming such as crop selection, media, light, nutrient solution, and containers while identifying knowledge gaps. Further, study in this area may lead to improved growing conditions to help solve the global issues and challenges surrounding food security, safety, and resource optimization.

关键词： Vertical Farming Microgreens Phytonutrients BioStrate Light Emitting Diodes Plant Nutrition

A preliminary quantitative reconstruction of precipitation in southern Mu Us sandy land at margin of Asian monsoon-dominated region during late Quaternary

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Journal of Geographical Sciences 2015年第3期25卷 301-310页

作者： CHEN Yingyong LU Huayu YI Shuangwen ZHANG Enlou XU Zhiwei YU Kaifeng Joseph A. mason School of Geographic and Oceanographic Sciences Nanjing University Jiangsu Collaborative Innovation Center for Climate Change Nanjing 210023 China State Key Laboratory of lake Science and Environment Nanjing Institute of Geography and Limnology CAS Nanjing 210008 China Department of Geography University of Wisconsin Madison Wl 53706 USA

We present the first quantitative estimation of monsoon precipitation during the late glaciaI-Holocene in the sandy land of northern China, based on organic carbon isotopic composition data from a loess-sand sequence at margin of the Mu Us sandy land. We use the relationship between monsoon precipitation and the carbon isotopic composition of modern soils as an analogue, with a minor modification, to reconstruct precipitation back to c. 47 ka ago. The preliminary results indicate that annual monsoon precipitation was high after 8 ka, with an average of 435 mm; and it decreased during 18 and 8 ka with a mean value of 194 mm. The precipitation value of 47-18 ka varied between the two. We compare the recon- structed precipitation with other records and paleoclimatic modeling results, showing that our record agrees with reconstructions of the monsoon precipitation from other sources, even capturing short climatic events such as the Younger Dryas. We suggest that solar irradiance, high-latitude temperature/ice volume and local evaporation have together modified moistures in the sandy land.

关键词： quantitative reconstruction organic carbon isotopic composition precipitation Mu Us sandy land Asian monsoon