Facilitating flexible learning by replacing classroom time with an online learning environment: A systematic review of blended learning in higher education

Higher education institutions are trying to provide more flexibility and individualization, which is mainly realized through the use of new technologies and implemented in online or blended learning designs. This systematic review aims to investigate the impact of replacing classroom time with an online learning environment. The meta-analysis (k = 21 effect sizes) applied strict inclusion criteria concerning research design, measurement of learning outcomes and implementation of blended learning. The estimated effect size (Hedge's g) was positive, although not significantly different from zero and the confidence interval [-0.13, 0.25], suggesting that overall differences between blended and conventional classroom learning are small, and, at best, very small negative or moderate positive effects are plausible. This means that despite a reduction in classroom time between 30 and 79 per cent, equivalent learning outcomes were found. Consequently, blended learning with reduced classroom time is not systematically more or less effective than conventional classroom learning.     

我国优秀男子跳远运动员助跑最后两步速度变化特征的研究

采用现场定点高速摄影、影片分析以及数理统计等方法,通过对助跑最后第三步和最后第二步速度的变化比较、助跑最后第二步摆动腿支撑阶段的速度变化及其动作结构的分析,得出以下结论:我国优秀男子跳远运动员助跑最后第三步至最后第二步摆动腿着地瞬间呈加速状态,助跑最后第二步摆动腿支撑阶段身体重心水平速度下降较小;助跑最后两步身体重心水平速度呈现出增大的趋势。     

体育院系跳远技术教学应用"俯角板"起跳的实验研究

采用文献资料、教学实验、数理统计等方法,对跳远起跳技术教学方法进行研究,提出了运用目标"俯角板起跳"练习的教学新方法.结果表明:运用目标"俯角板"起跳练习,能有效改进学生在跳远时的起跳技术及提高学生的起跳能力,在跳远教学中具有实际的可行性与推广性.     

结合学生实际进行教学增强思政课教学的实效性

从高校思想政治理论课的性质与特点出发,对如何结合大学生的思想状况和心理特点、学生认知和接受马克思主义理论的特点和规律来开展教学活动,以增强思想政治理论课教学的实效性,促进大学生的全面发展,作了初步的探讨.     

跳发球在女子排球比赛中的运用效果研究

以参加 2 0 0 1年“步步高无绳电话杯”全国女子排球联赛中的 8支队伍为研究对象 ,从跳发球与站立发球运用数量的百分比、在比赛中的贡献率、2种技术的运用效果差异、个人跳发球效果差异等方面进行研究和讨论 ,建议女子排球运动员在比赛中使用跳发球技术应因人而异、注重实效、合理运用     

科技期刊编辑加工工作的有效性管理

针对编辑加工存在的问题,从管理的有效性角度出发,分析目前编辑加工工作评价方式中存在的问题,讨论公正、准确评价编辑加工工作的必要性.认为编辑加工工作应当实行有效性管理,加强编辑部的制度化建设,创造积极向上的工作氛围,对隐含在编辑加工工作中的隐性劳动给予充分肯定,并提出了具体建议.     

Investigation of an Egyptian Mummy board by Using Clinical Multi-slice Computed Tomography

A modern approach to the diagnosis of artistic heritage makes use of non-destructive techniques which avoid damage to artworks or signs of interaction with the analytical technique used. For this reason, today, the employment of X-rays to study artistic heritage is quite widespread. Computed tomography (CT) Imaging was first used as specialized medical diagnostic tool in the early 1970s. Today, CT scanners have become more common, and non-destructive three-dimensional imaging has found an increasing number of uses in different areas such as materials research, geology, archaeology, and museum conservation. In this work, a new generation of clinical CT (based on the Dual Energy and multi-slice acquisition principle) is used to investigate an Egyptian wooden mummy board with a total acquisition time of 93.23 seconds and a voxel size of 0.078?×?0.078?×?1.5?mm. The use of two distinct techniques of image post-processing, the two-dimensional multi-planar reconstruction (MPR) and the three-dimensional volume rendering technique (VRT) allowed us to: evaluate the state of conservation of the mummy board, determine how the wooden object was implemented, recognize a nineteenth-century intervention of consolidation, and advance the hypothesis that the wooden planks were reused. In particular, we highlight the use of the cardiovascular and pulmonary filter with VRT reconstruction, which allows a virtual elimination of different parts of the mummy board to investigate those areas otherwise accessible only by removing parts of the board and thus damaging the work.     

运用数据库定量分析遴选英文科技期刊编委

编委会对科技期刊的发展起着至关重要的作用。组建一支优质而高效的编委会队伍可以为打造优秀科技期刊奠定坚实的基础。本文以《仿生工程学报》编委会换届筹备为例,借鉴国外同领域竞争期刊的编委会构成特点,探讨适合我国英文科技期刊的编委遴选的新方法。实践表明,灵活运用Web of Science、Scopus等网络文献数据库,不仅可以对备选编委的学术影响力、学术活跃度等进行定量评估,还可以挖掘有潜力的新编委。备选编委定量评价体系的建立能够为编委会换届改选提供重要的理论依据。     

跨文化效力与我族中心主义的相关性研究简

本研究采用跨文化效力量表和普遍我族中心主义量表，调查了大学生跨文化效力和我族中心主义的基本情况及相关关系。结果表明：（1）中文版跨文化效力量袁和普遍我族中心主义量表具有较高的可靠性；（2）大学生跨文化效力和我族中心主义均处于中等水平，在跨文化效力的6项因素中，大学生的尊重对方最强，随后依次是认同维护、互动管理、互动放松、行为弹性，而信息技巧最弱；（3）跨文化效力的6项因素间存在较强的相关关系，量表具有较高的内部有效性；（4）跨文化效力和我族中心主义之间呈显著负相关关系；（5）跨文化效力在性别上无显著差异，我族中心主义性别差异显著。     

“马克思主义基本原理”课程双语教学合理性分析

双语教学在大学兴起,而"马克思主义基本原理"课能否采用这一新形式则有诸多争议。鉴于学生实际情况、语言学习规律以及马克思主义理论特点,"马克思主义基本原理"双语教学具有必要性和正当性,能有效地提升学生英语水平、增强教学实效性和彰显马克思主义研究的学术性。