问题式教学法对工科大学生批判性思维倾向影响的实证研究     

田社平  王力娟  邱意弘 《高等工程教育研究》2018,(6):156-160

采用不相等实验组对照组前后测准实验研究,并辅以行为观察数据和质性资料分析,探究在"基本电路理论"课程教学中采取问题式教学法促进工科大学生批判性思维倾向的发展。研究表明,问题式教学对工科大学生的批判性思维倾向有显著的促进作用。作者认为,为有效开展问题式教学以促进学生批判性思维发展,应注意:(1)教师需具备良好的批判性思维精神;(2)积极营造良好的思考情境和氛围,鼓励与引导学生发现和解决问题;(3)应根据学生基础设置难易适当的问题,营造问题讨论的安全教学氛围;(4)积极引导讨论小组确定合适的讨论问题和组内讨论规则,充分利用信息技术辅助教学。  相似文献   

Four pitfalls in normalizing citation indicators: An investigation of ESI’s selection of highly cited papers     

Zhigang Hu  Wencan Tian  Shenmeng Xu  Chunbo Zhang  Xianwen Wang 《Journal of Informetrics》2018,12(4):1133-1145

InCites Essential Science Indicators is becoming increasingly used to identify top-performing research and evaluate the impact of institutes. Unfortunately, our study shows that ESI indicators, as well as other normalized citation indicators, have the following flaws. First, the publication month and the online-to-print delay affect a paper’s probability of becoming a Highly Cited Paper (HCP). Papers published in the earlier months of the year are more likely to accumulate enough citation counts to rank at the top 1% compared with those published in later months of the year. Papers with longer online-to-print delays have an apparent advantage for being selected as HCPs. Research field normalizations lead to the third pitfall. Different research fields have different citation thresholds for HCPs, making research field classification important for a journal. In addition, the uniform thresholds for both articles and reviews in ESI affect the reliability of HCP selection because, on average, reviews tend to have higher citation rates than articles. ESI’s selection of HCPs provides an intuitive feel for the problems of normalized citation impact indicators, such as those provided in InCites and SciVal.  相似文献   

Making Sense of the Online Forum Posts of Two Books on Zheng He’s Voyages     

Dexin Tian  Chin-Chung Chao 《Journal of Intercultural Communication Research》2017,46(3):191-209

This paper studies the online forum posts at the websites of Amazon and Goodreads of two books on Zheng He’s voyages. The findings are threefold: First, most of the online forum participants play their due roles and satisfy the six conditions of Dahlberg’s model of an ideal online public sphere. Second, the emerged themes match the six conditions of Dahlberg’s model. The readers’ reviews at the two Western social media websites are mostly positive and rational. Implications of the study are also discussed.  相似文献   

青少年体质健康研究:概念、评价与干预促进     

李改  夏天  廖婷  霍翩 《湖北体育科技》2017,36(7)

青少年体质健康问题一直备受关注与重视,破解青少年体质发展瓶颈的关键在于对现存症结的准确把握与详实分析。通过客观分析国内外青少年体质概念的内涵、深入剖析青少年体质健康测试状况,归纳比较各类体育干预促进方法的科学性与可行性,提出:吸收整合国内外运动与健康指导的宝贵经验,研制科学有效、切实可行的青少年体育运动指导方案,是解决我国青少年体质健康发展瓶颈的关键策略;重点开发强壮青少年骨骼与肌肉的运动指导方案是全面提高我国青少年身体素质的主要途径。  相似文献   

从第13、14届世界健美操锦标赛成绩看竞技健美操竞争格局与发展态势     

田华喜 《福建体育科技》2017,36(1)

采用文献资料法、录像观察法和比较分析法对第13、14届世界健美操锦标赛成绩进行对比分析,并结合2013-2016年周期新规则,探究世界竞技健美操竞争格局和发展态势,为中国竞技健美操进一步发展提供可借鉴的理论依据。研究认为:竞赛规则指引着竞技健美操发展方向,对新规则的理解和掌握直接影响着比赛成绩;世界竞技健美操保持欧亚大陆雌雄争夺、美洲势单力薄的"偏"三足鼎立竞争格局;亚洲国家总奖牌数和金银铜牌数追平乃至超越欧洲国家,强烈冲击欧洲国家长久统治的主宰地位;中国竞技健美操在经历低谷后焕发崭新生机,重新进入国际领军集团;世界竞技健美操呈现国际化发展的确定性和洲际、国家强弱流动的不确定性互相交织的态势发展。  相似文献   

Simultaneous changes in seed size,oil content and protein content driven by selection of SWEET homologues during soybean domestication     

Shoudong Wang  Shulin Liu  Jie Wang  Kengo Yokosho  Bin Zhou  Ya-Chi Yu  Zhi Liu  Wolf B Frommer  Jian Feng Ma  Li-Qing Chen  Yuefeng Guan  Huixia Shou  Zhixi Tian 《国家科学评论(英文版)》2020,7(11):1776

Soybean accounts for more than half of the global production of oilseed and more than a quarter of the protein used globally for human food and animal feed. Soybean domestication involved parallel increases in seed size and oil content, and a concomitant decrease in protein content. However, science has not yet discovered whether these effects were due to selective pressure on a single gene or multiple genes. Here, re-sequencing data from >800 genotypes revealed a strong selection during soybean domestication on GmSWEET10a. The selection of GmSWEET10a conferred simultaneous increases in soybean-seed size and oil content as well as a reduction in the protein content. The result was validated using both near-isogenic lines carrying substitution of haplotype chromosomal segments and transgenic soybeans. Moreover, GmSWEET10b was found to be functionally redundant with its homologue GmSWEET10a and to be undergoing selection in current breeding, leading the the elite allele GmSWEET10b, a potential target for present-day soybean breeding. Both GmSWEET10a and GmSWEET10b were shown to transport sucrose and hexose, contributing to sugar allocation from seed coat to embryo, which consequently determines oil and protein contents and seed size in soybean. We conclude that past selection of optimal GmSWEET10a alleles drove the initial domestication of multiple soybean-seed traits and that targeted selection of the elite allele GmSWEET10b may further improve the yield and seed quality of modern soybean cultivars.  相似文献   

竞赛法在体育教学中的应用——以篮球课教学为例     

薛振东  杜春斌 《搏击·武术科学》2010,(7):34-35

文章主要根据篮球运动的对抗性、竞争激烈的特点,提出在篮球课教学中应用竞赛的方法和手段,传授篮球运动的基本知识、技术及技能,使学生们在学习过程中能更进一步了解篮球运动的起源与发展状况,培养学生们的学习情趣,调动学生学习的积极性与与自觉性,通过篮球技战术的竞赛法教学,在相互的角逐与对抗中,培养学生们的竞争意识与竞争能力,启发和调动学生们勇于开拓,不断进取的精神和优秀的品质素质,起到积极作用。  相似文献   

网络侵权及其对策研究   总被引：1，自引：0，他引：1  

田园 《现代情报》2010,30(5):156-158

在信息化的知识经济时代,计算机和网络技术飞速发展,以其巨大的优越性和竞争力改变着人们的生活,互联网已经走进人们生活的各个方面。然而,在网络给人们的生活带来巨大便利的同时,网络侵权问题愈演愈烈,给人们的生活和我国经济的发展造成了巨大的损害。本文主要从网络侵权的概念和特征出发,分析网络侵权产生的原因,并提出网络侵权的应对之策。  相似文献   

关于五禽戏新功法对中老年人的健身功效的实验研究     

陈玲丽  刘文  吴家舵  黄甜  韩立敏 《山东体育科技》2010,32(3)

为了解和掌握五禽戏新功法对中老年人锻炼后的心理学效应,通过前后测实验设计,从生理、心理和社会三个维度对五禽戏新功法的健身功效进行了实验研究,结果发现:短期五禽戏练习后所有被试在自测健康评定量表总分上有显著差异,但不同性别和年龄段被试在前后测总分上的差异不显著,短期五禽戏练习对被试的生理、社会(子量表)无显著影响,但对心理(子量表)影响显著,未发现五禽戏对改善中老年人注意力集中能力的显著作用.得到以下结论:短期五禽戏新功法练习反映在量表总分上有显著功效,五禽戏练习在心理子量表上的效果显著.进而推论:五禽戏新功法所表现出的健身功效,可能是先通过心理这个中介变量,进而再影响生理功能的.  相似文献   

高校人才集聚绩效评价方法探析:集聚指数的编制与应用   总被引：1，自引：0，他引：1  

田凌晖 《教师教育研究》2007,19(2):45-49

优秀人才的集聚是高校核心竞争力提升的首要前提,而如何考量高校人才集聚的绩效成为亟待解决的难题。本研究运用统计指数相关方法编制了高校人才集聚指数作为绩效评价的一种方法,并进一步选择位于东北、西北、中部、东部和东南的5所“985”高校,对其2000年以来人才集聚指数进行测算,通过分析测算结果发现五所高校的人才流动均呈逐步优化的发展态势,且发展态势相对稳健,但高校间人才集聚绩效存在一定差异,而差异幅度在一段时间内表现得相对稳定。  相似文献