全文获取类型
收费全文 | 26243篇 |
免费 | 510篇 |
国内免费 | 1140篇 |
专业分类
教育 | 14227篇 |
科学研究 | 5660篇 |
各国文化 | 130篇 |
体育 | 1518篇 |
综合类 | 1323篇 |
文化理论 | 20篇 |
信息传播 | 5015篇 |
出版年
2024年 | 5篇 |
2023年 | 96篇 |
2022年 | 359篇 |
2021年 | 560篇 |
2020年 | 657篇 |
2019年 | 473篇 |
2018年 | 411篇 |
2017年 | 369篇 |
2016年 | 400篇 |
2015年 | 713篇 |
2014年 | 1749篇 |
2013年 | 2201篇 |
2012年 | 2224篇 |
2011年 | 2171篇 |
2010年 | 1620篇 |
2009年 | 1562篇 |
2008年 | 1771篇 |
2007年 | 1901篇 |
2006年 | 2046篇 |
2005年 | 1838篇 |
2004年 | 1231篇 |
2003年 | 1147篇 |
2002年 | 814篇 |
2001年 | 602篇 |
2000年 | 346篇 |
1999年 | 162篇 |
1998年 | 114篇 |
1997年 | 77篇 |
1996年 | 78篇 |
1995年 | 42篇 |
1994年 | 30篇 |
1993年 | 25篇 |
1992年 | 14篇 |
1991年 | 7篇 |
1990年 | 4篇 |
1989年 | 3篇 |
1985年 | 11篇 |
1984年 | 8篇 |
1983年 | 9篇 |
1982年 | 8篇 |
1981年 | 8篇 |
1980年 | 1篇 |
1979年 | 5篇 |
1978年 | 11篇 |
1977年 | 3篇 |
1976年 | 5篇 |
1957年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 78 毫秒
1.
ABSTRACTThis article suggests that situations in which multiple research teams are convened under similar conditions present an opportunity to discover factors that lead to productive collaboration. It argues that social network analysis of research team outputs becomes more valuable when paired with data about research participant perceptions; and that any variables used as indicators of collaboration need to be calibrated using datasets from multiple studies with cross-team comparisons. The article provides an example of the kind of methodology needed to achieve this, describing a study with data from four research teams based at an Australian university campus, reporting their research performance over four years under conditions in which many variables were controlled and with results augmented by a survey of participant perceptions. Findings from the study indicate that there were exceptions to hypothesized associations between participant perceptions of collaboration and specific social network analysis measures over co-authorship data. The article suggests that, given the methodological challenges of studying research teams in the field, multiple datasets combining findings such as those in the present study are a path towards the development of indicators of productive higher education research collaboration. 相似文献
2.
Fadhaa A. Ghafil Bassim I. Mohammad Hussain S. Al-Janabi Najah R. Hadi Hayder A. Al-Aubaidy 《Indian journal of clinical biochemistry : IJCB》2021,36(1):81
Genetic variation in the angiotensin II type 1 receptor (AT1R) has an important effect on the outcome of acute coronary syndrome (ACS) initiated treatment with captopril. This study aims to investigate the impact of genetic polymorphism of AT1R (rs5186 and rs275651) on the ACS outcome in Iraqi patients treated with captopril. A total of 250 Iraqi individuals with ACS were included in this case—control study and they were divided into two study groups; Study group 1 included 125 participants who were prescribed captopril, 25 mg twice daily and study group 2 included 125 participants who received no captopril as part of their ACS treatment (control study). The AT1R gene (rs5186) CC genotype was found to be associated with ST-elevation myocardial infarction (STEMI) (Odd’s ratio (O.R) = 1.2, P = 0.7), while AC was associated with Non-ST-elevation myocardial infarction (NSTEMI) and unstable angina (UA) (O.R = 1.2, P = 0.8). AC genotype is more prone to have Percutaneous coronary intervention (PCI) after ACS attack (O.R = 1.2, P = 0.6). CC genotype had a risk to get less improvement (O.R = 1.6, P = 0.5), so might require higher doses of captopril during acute coronary insult. The AT1R gene (rs275651) AA genotype was associated with UA (O.R = 1.3, P = 0.9). AA and AT genotypes were more prone to have PCI after ACS attack (O.R = 3.9 P = 0.2, O.R = 3.5, P = 0.3 respectively) and thus requiring higher doses of captopril. We conclude that the AT1R rs5186, rs275651 genetic polymorphisms might partially affect the clinical outcome of ACS patients treated with captopril and might have captopril resistance which requires higher doses. 相似文献
3.
2022年冬奥会已进入北京时间。黑龙江省各高校应在习主席新时代中国特色社会主义思想引领下,深入贯彻党的教育方针,将立德树人根本任务深切落到实处,积极响应"带动3亿人参与冰雪运动"的伟大号召,加速发展高校冰雪运动。本文采用文献资料、逻辑分析、归纳等研究方法,对北京冬奥会背景下黑龙江省高校冰雪运动发展的现状及存在问题进行分析,并探寻一条符合新时代发展需要的黑龙江省高校冰雪运动发展路径,旨在全面振兴黑龙江省高校冰雪运动,为2022年北京冬奥会保驾护航。 相似文献
4.
[目的/意义] 知识产权是经济、科技和文化实力的重要体现,已经成为各国竞相争夺的战略性资源。在建设知识产权强国背景下,急需提升高校知识产权信息服务的能力和水平,支撑高校科技创新和"双一流"建设。[方法/过程] 通过对高校知识产权信息服务工作的现状进行分析,总结高校开展知识产权信息服务工作面临的问题,并提出解决对策。[结果/结论] 针对高校知识产权信息服务面临的困境,提出改变科研评价导向,加强知识产权信息资源建设,构建知识产权信息服务标准体系,加大人才培养力度,贯通产学研全链条,有效运用大数据、人工智能技术的建议。 相似文献
5.
BackgroundThe current state of knowledge regarding the role of non-offending fathers in supporting their sexually abused children is very scarce.ObjectiveThe objective of this study is to further our understanding of fathers’ roles following disclosure of their children’s sexual abuse (SA) by evaluating fathers’ perceptions of the impact of disclosure on their involvement and support of their children.Participants and methodThis qualitative study relies on individual semi-structured interviews conducted with 17 fathers of allegedly abused children.ResultsInductive thematic analysis first highlighted that some reported a period of disengagement from the child during which they put into question their role and attitudes, followed by a period of re-involvement. This period of difficulties experienced by some fathers in regard to their involvement towards their children was due to either their own important psychological distress, their ambivalence towards their child or even because of feelings of uneasiness experienced during physical contact with them. Despite this, findings indicate the presence of thoughts and attitudes that suggest children are a source of concern for fathers. The four forms of abuse-specific support previously observed among mothers (believing the child, seeking out professional services, protecting him/her from the offender, supporting him/her emotionally) were also observed among fathers. In accordance with the activation theory, a form of support specific to fathers, namely, encouraging the child to open up to and explore the world outside the family, thereby, fostering the child’s self-esteem development, was observed and constitutes a relevant finding.ConclusionClinical and empirical implications are discussed. 相似文献
6.
[目的/意义]探讨工作资源对高校图书馆员敬业度的影响与机制,以期为高校图书馆实施人力资源管理和提升图书馆员的敬业度提供参考。[方法/过程]选取湖南各高校图书馆的358名馆员为研究对象,考察工作资源对高校图书馆员敬业度的预测作用以及心理资本与组织承诺在两者之间的中介作用。[结果/结论]描述性统计与差异分析、相关分析和逐步回归分析的结果表明,不同性别的高校图书馆员在组织承诺量表得分上存在显著性差异,男性馆员组织承诺得分显著高于女性,不同性别馆员在其余得分上均不存在显著性差异。不同婚姻、年龄、学历、职位、职称者在各量表得分上均不存在显著性差异。高校图书馆员工作资源、心理资本、组织承诺与敬业度的两两相关都达到统计显著性水平。工作资源对高校图书馆员的敬业度具有正向预测作用,心理资本和组织承诺能够在工作资源对高校图书馆员敬业度的影响中起部分中介作用。丰富高校图书馆员工作资源,增进其组织支持感,增强其心理资本和组织承诺,是促进高校图书馆员敬业度提升的有效路径。 相似文献
7.
刘存忠 《广州体育学院学报》2019,(5):63-68
应用文献计量法对1988—2018年CNKI数据库武术交叉研究文献进行分析,以探析我国武术科研领域交叉学科研究动态。结果显示:我国武术科研领域交叉学科研究动态主要包括文化、运动人体科学、教育、健身养生、经济产业、历史、艺术和其它八个方向,数量占了武术研究文献总数近1/5,热点集中在武术文化、武术教育,其次为武术与经济产业、武术与养生健身,由热点转为冷门的是运动人体科学;各类基金支持的文献篇数占支持武术研究总数的近1/3,其中受国家社科基金支持的交叉研究文献比例更高。机构单位发文篇数主要集中在国家六大体育专业院校和河南省三所综合性大学;武术科研领域交叉学科研究未来的趋势包括政策导向发展、武术本源发展、与新兴事物交叉发展三个方面。 相似文献
8.
本文阐述了少数民族体育非物质文化遗产的相关概念,深入研究了广西地区少数民族体育非物质文化遗产的内容和特点,并有针对性地提出了保护模式和保护措施,希望有助于我国广西少数民族体育非物质文化遗产的研究和保护工作。 相似文献
9.
ABSTRACTFor librarians at the University of North Florida, there was a need to move beyond information literacy instruction to one-on-one and small group research consultations to aid in student success. By staffing the research desk with staff and students, librarians were able to open their calendars to allow more time for in-person, phone, and online consultations to aid in meeting the research goals of students at the institution. After assessing the research consultation program for two years, there has been a positive correlation between research consultation usage, satisfaction in completing assignments, and student success measures throughout the university. 相似文献
10.
文章对美国大学图书馆在信息资源组织与利用方面的创新与实践进行梳理总结,以期为国内图书馆的资源建设提供借鉴。选取美国顶尖的11所大学图书馆作为考察对象,重点介绍它们在馆藏特色文献数据化、资源多样化收集与元数据整合、数字资源全生命周期管理方面的特色和进展。图书馆在资源服务方面所扮演的角色在不断演变,美国大学图书馆正借助先进的信息生产、存储和传递技术,向着实现信息资源共建、共知和共享的目标迈进。国内图书馆需要关注新兴技术,加强特藏资源开发,促进纸质与数字资源融合,优化数字资源业务流程。 相似文献