全文获取类型
| 收费全文 | 533篇 |
| 免费 | 9篇 |
| 国内免费 | 8篇 |
专业分类
| 教育 | 344篇 |
| 科学研究 | 91篇 |
| 各国文化 | 1篇 |
| 体育 | 61篇 |
| 综合类 | 33篇 |
| 文化理论 | 1篇 |
| 信息传播 | 19篇 |
出版年
| 2024年 | 3篇 |
| 2023年 | 5篇 |
| 2022年 | 7篇 |
| 2021年 | 8篇 |
| 2020年 | 11篇 |
| 2019年 | 20篇 |
| 2018年 | 18篇 |
| 2017年 | 17篇 |
| 2016年 | 15篇 |
| 2015年 | 16篇 |
| 2014年 | 34篇 |
| 2013年 | 70篇 |
| 2012年 | 43篇 |
| 2011年 | 54篇 |
| 2010年 | 40篇 |
| 2009年 | 22篇 |
| 2008年 | 33篇 |
| 2007年 | 29篇 |
| 2006年 | 19篇 |
| 2005年 | 17篇 |
| 2004年 | 15篇 |
| 2003年 | 8篇 |
| 2002年 | 11篇 |
| 2001年 | 6篇 |
| 2000年 | 9篇 |
| 1999年 | 5篇 |
| 1998年 | 1篇 |
| 1997年 | 1篇 |
| 1996年 | 4篇 |
| 1993年 | 3篇 |
| 1992年 | 2篇 |
| 1990年 | 1篇 |
| 1989年 | 1篇 |
| 1985年 | 2篇 |
排序方式： 共有550条查询结果，搜索用时 0 毫秒
51.
近年来大学生身体机能水平普遍呈逐年下降的趋势,尤其心肺功能水平下降最为明显。本文运用试验方法对足球课外锻炼能否改善大学生心肺功能进行了研究,通过对学生分组并进行12分钟跑的测试,对比锻炼前后的最大摄氧量来检验锻炼效果。结论是通过科学的足球课外锻炼对于不同组别的大学生都是可以有效地改善大学生的心肺功能水平的。 相似文献
52.
53.
竞技太极拳经过多年磨练,现在的发展状况是否合理化、规范化是本文研究重点。通过文献资料法、实地调查法等对运动员训练、竞赛期间比赛成绩、难度动作完成质量及编排几个方面进行分析讨论。研究发现:运动员对难度动作的把握水平整体提升,比赛中难度动作缺失一定区分度,对竞技太极拳的发展不利。应在高难度上加大创新力度。竞技太极拳的编排逐渐趋于合理化。 相似文献
54.
In fast-paced and knowledge-intensive environments, licensing partnerships can be powerful levers for market expansion. Research on the management of technology-oriented licenses has nonetheless pointed out the risks of corrosive disputes caused by conflicting interests or misunderstandings among licensing partners. The choice made ex ante on mechanisms for resolving potential disputes is of prime importance in the execution of licensing exchanges. Although the legal literature has widely emphasized the advantages of arbitration towards litigation, public ordering remains the “default” option in managers’ eyes. By adopting a transaction cost economics logic, our study explores the conditions under which licensing partners may prefer arbitration over public ordering during the contractual-design phase. In accordance with our theoretical arguments, findings show that the occurrence of arbitration provisions increases when the coordination orientation adopted by licensing partners is extensive. In situations where both monitoring and coordination orientations are simultaneously extensive, results reveal a greater propensity to prefer arbitration over public ordering. Our research therefore supports the view that corporate decision-makers tend to favor the conciliatory stance and compromising awards typically associated with arbitration, only when exchanges are expected to be highly coordinative. Their preference for arbitration over litigation is magnified when the coordination orientation develops alongside the monitoring orientation. 相似文献
55.
周晶 《宁波大学学报(教育科学版)》2021,(1):127-132
研究综合了来自中国大陆18570名3-12岁儿童的焦虑与父母教养方式相关的30项研究的数据,通过元分析的方法考查了二者相关的强度,并分析影响相关强度的因素。从总体上来说,儿童焦虑与父母教养方式存在弱相关;父母教养方式类型、儿童年龄、父母性别会对二者关系产生调节作用。建议在教养儿童过程中要采用正向的教养方式,要给予年幼儿童充分的独立自主的权利和自由,鼓励父亲参与教养,这有利于降低儿童的焦虑水平。 相似文献
56.
目的:旨在研究肌酸补充(CS)和电刺激(ES)对C2C12肌管葡萄糖摄取相关通路蛋白含量和基因表达的影响,阐明肌酸对GLUT4调节的相关信号通路,并讨论CS是否对ES具有叠加效应,为肌酸提高耐力水平提供新的理论依据。研究方法:0.5mM和2 mM浓度的肌酸孵育分化5 d的肌管48h,然后电刺激(15V,30ms,3Hz)共分化7d的肌管120 min。结果:ES引起AMPK-α2和GLUT4 mRNA表达及GLUT4蛋白含量显著增加(P<0.05),糖原显著下降(P<0.05)。不同浓度的CS没有引起AMPK-α2 mRNA表达变化,却使得GLUT4 mRNA和蛋白含量显著增加(P<0.05),糖原含量也无显著性增加(P>0.05)。ES+CS组与C组和同浓度CS组相比,明显上调AMPK-α2 mRNA和GLUT4 mRNA表达及GLUT4蛋白含量(P<0.05)。结论:1)15V,30ms,3Hz的刺激参数,ES120min没有引起细胞膜明显损伤,是研究耐力运动对肌肉糖代谢影响的适合参数。2)ES能通过AMPK途径增加肌管糖摄入和糖转运。3)单纯CS对肌管糖含量没影响,肌酸或许是通过AMPK非依赖性通路调节糖摄入。4)CS对ES对糖摄入的调节具有叠加效应。 相似文献
57.
推动教育数字化,教师是中坚力量。教育部2023年发布的《教师数字素养》教育行业标准（简称《标准》）,为准确评估我国教师数字素养水平提供了参照。但是仅有标准尚无法有效诊断教师数字素养发展状况,测评工具亦不可少。国内外虽然已有一些教师数字素养评估工具,但并非对标我国《标准》,评估的适切性不高。数字素养包括信息素养和数据素养两大核心内涵,《标准》从数字化意识、数字技术知识与技能、数字化应用、数字社会责任以及专业发展5个维度对我国教师数字素养进行了规定。在结合国际主流数字素养框架对我国《标准》进行详细分析基础上,按照“选用经典+自建补充”的方式构建了我国中小学教师数字素养测评问卷。该问卷依次经历四大环节的验证与修订：用于保障内容效度的专家评估与认知审查、用于保障题项区分度与代表性的项目分析、用于保障结构效度的探索性与验证性因子分析,以及用于保障同类题项聚类效果的收敛效度分析。修订后问卷具备良好的模型拟合度和内部一致性,可用于教师自查、研修项目前后测,以及区域、学校层面的摸排调查。 相似文献
58.
Qi Xia Thomas K. F. Chiu Ching Sing Chai Kui Xie 《British journal of educational technology : journal of the Council for Educational Technology》2023,54(4):967-986
The anthropomorphic characteristics of artificial intelligence (AI) can provide a positive environment for self-regulated learning (SRL). The factors affecting adolescents' SRL through AI technologies remain unclear. Limited AI and disciplinary knowledge may affect the students' motivations, as explained by self-determination theory (SDT). In this study, we examine the mediating effects of needs satisfaction in SDT on the relationship between students' previous technical (AI) and disciplinary (English) knowledge and SRL, using an AI conversational chatbot. Data were collected from 323 9th Grade students through a questionnaire and a test. The students completed an AI basic unit and then learned English with a conversational chatbot for 5 days. Confidence intervals were calculated to investigate the mediating effects. We found that students' previous knowledge of English but not their AI knowledge directly affected their SRL with the chatbot, and that satisfying the need for autonomy and competence mediated the relationships between both knowledge (AI and English) and SRL, but relatedness did not. The self-directed nature of SRL requires heavy cognitive learning and satisfying the need for autonomy and competence may more effectively engage young children in this type of learning. The findings also revealed that current chatbot technologies may not benefit students with relatively lower levels of English proficiency. We suggest that teachers can use conversational chatbots for knowledge consolidation purposes, but not in SRL explorations.
Practitioner notes
What is already known about this topic- Artificial intelligence (AI) technologies can potentially support students' self-regulated learning (SRL) of disciplinary knowledge through chatbots.
- Needs satisfaction in Self-determination theory (SDT) can explain the directive process required for SRL.
- Technical and disciplinary knowledge would affect SRL with technologies.
- This study examines the mediating effects of needs satisfaction in SDT on the relationship between students' previous AI (technical) and English (disciplinary) knowledge and SRL, using an AI conversational chatbot.
- Students' previous knowledge of English but not their AI knowledge directly affected their SRL with the chatbot.
- Autonomy and competence were mediators, but relatedness was not.
- Teachers should use chatbots for knowledge consolidation rather than exploration.
- Teachers should support students' competence and autonomy, as these were found to be the factors that directly predicted SRL.
- School leaders and teacher educators should include the mediating effects of needs satisfaction in professional development programmes for digital education.
59.
Novak Kostal 《Zeitschrift für Hochschulrecht, Hochschulmanagement und Hochschulpolitik: zfhr》2008,7(2):57-58
Der Landesgesetzgeber vermag seine Gesetzgebungskompetenz betreffend die angefochtene Bestimmung arbeits- und dienstrechtlichen
Inhalts angesichts dieser Komplexit?t weder auf den Kompetenztatbestand des Art 12 Abs 1 Z 1 B-VG "Heil- und Pflegeanstalten",
noch auf die Kompetenznorm des Art 21 Abs 1 B-VG zu stützen. 相似文献
60.
从理论上分析了如何将原有的CFC-12汽车空调系统改型成HFC-134a系统,以减小对环境的破坏。 相似文献