首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   12733篇
  免费   489篇
  国内免费   93篇
管理学   1108篇
劳动科学   10篇
民族学   161篇
人才学   1篇
人口学   684篇
丛书文集   1486篇
教育普及   1篇
理论方法论   881篇
综合类   4744篇
社会学   2688篇
统计学   1551篇
  2023年   76篇
  2022年   161篇
  2021年   204篇
  2020年   224篇
  2019年   220篇
  2018年   230篇
  2017年   370篇
  2016年   292篇
  2015年   328篇
  2014年   452篇
  2013年   1209篇
  2012年   515篇
  2011年   665篇
  2010年   649篇
  2009年   647篇
  2008年   639篇
  2007年   672篇
  2006年   676篇
  2005年   570篇
  2004年   406篇
  2003年   415篇
  2002年   514篇
  2001年   478篇
  2000年   328篇
  1999年   231篇
  1998年   167篇
  1997年   138篇
  1996年   147篇
  1995年   122篇
  1994年   94篇
  1993年   121篇
  1992年   111篇
  1991年   122篇
  1990年   92篇
  1989年   88篇
  1988年   70篇
  1987年   69篇
  1986年   65篇
  1985年   80篇
  1984年   68篇
  1983年   70篇
  1982年   45篇
  1981年   41篇
  1980年   37篇
  1979年   48篇
  1978年   38篇
  1977年   34篇
  1976年   34篇
  1975年   32篇
  1974年   41篇
排序方式: 共有10000条查询结果,搜索用时 406 毫秒
281.
《鹿特丹规则》的立法宗旨在于实现海上货物运输法律的统一。它对海上货物运输中相关主体的权利义务进行了重新分配,尤其是其中的"门到门"运输,加重了承运人的义务,这种权利义务的再分配,对海上保险法律制度必然会造成一定的影响。文章从《鹿特丹规则》"门到门"运输的基本内涵的研究出发,探讨了"门到门"运输下承运人义务的变化,分析了该规则的主要影响尤其是对海上保险可能造成的影响,以及海上保险法律制度的完善路径。  相似文献   
282.
虞崇胜 《学术界》2012,(11):33-42,282
中国式民主是人类民主类型中的一支新秀。如同任何类型的民主一样,中国式民主包含着内在精神和外在形式两个主要方面。就其内在精神来看,中国式民主以其创新的理论体系演绎着民主的普遍精神;就其外在形式来看,中国式民主又以其独特的实现形式丰富了人类民主的具体形式。因此,中国式民主是中国的,但又是人类的。在全球化时代,发展中国式民主必须具有开放的胸襟和广纳的气魄——即具有类文明的自觉。只有准确地把握中国式民主的精神实质和具体实现形式,在坚持中国特色的同时,不断增强"类文明"的成分,才能发展好中国式民主,建设社会主义政治文明。从一定意义上讲,不断走向"类文明",正是中国式民主的基本走向和最终归宿。  相似文献   
283.
Social Indicators Research - Inequality of opportunity (IOp) in any society is defined as that part of overall inequality which arises from factors beyond the control of an individual...  相似文献   
284.
This study evaluated the 2‐day intensive modality of Emotion Focused Family Therapy (EFFT). The intervention attempts to prepare parents to take a primary role in their child's recovery from a range of mental health issues. One hundred and twenty‐four parents completed the intervention and provided data a week prior to intervention, post‐intervention and at 4‐month follow‐up. Results include significantly reduced parent blocks and increased parental self‐efficacy in relation to involvement in their child's recovery, as well as significant improvement in child symptomatology. The findings confirm positive results from an earlier pilot study involving eating disorders and demonstrate the potential for EFFT as an intervention for a range of clinical problems in children and youth.  相似文献   
285.
The professional decision-making in research (PDR) measure was administered to 400 National Institutes of Health (NIH)-funded and industry-funded investigators, along with measures of cynicism, moral disengagement, compliance disengagement, impulsivity, work stressors, knowledge of responsible conduct of research (RCR), and socially desirable response tendencies. Negative associations were found for the PDR and measures of cynicism, moral disengagement, and compliance disengagement, while positive associations were found for the PDR and RCR knowledge and positive urgency, an impulsivity subscale. PDR scores were not related to socially desirable responding, or to measures of work stressors and the remaining impulsivity subscales. In a multivariate logistic regression analysis, lower moral disengagement scores, higher RCR knowledge, and identifying the United States as one’s nation of origin emerged as key predictors of stronger performance on the PDR. The implications of these findings for understanding the measurement of decision-making in research and future directions for research and RCR education are discussed.  相似文献   
286.
287.
本文旨在为王力著的《同源字典》拾遗补阙。有些字王力的著作虽已收录、考释,但这些字还有别的意义,尚可与另一些字构成另一对(或一组)同源字(即“同源词”)。本文依照“音近义通”的原则考释同源字。  相似文献   
288.
Objective: This study aims to investigate the effect of smoking on sexual functions in AS patients.

Patients and methods: A total of 67 male AS patients with a median age of 34 years (range: 18–57) reporting sexual activity at least for the past 4 weeks period were included. Patients were divided into smokers (Group 1, n?=?47) and non-smokers (Group 2, n?=?20). Fagerström test for nicotine dependence, smoking history, exhaled carbon monoxide test were recorded for smoking AS patients. Visual analogue scale (VAS), Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), Bath Ankylosing Spondylitis Metrology Index (BASMI), Bath Ankylosing Spondylitis Functional Index (BASFI), Ankylosing Spondylitis Quality of Life (ASQoL), International Index of Erectile Function (IIEF), Beck Depression Inventory (BDI) were filled for both groups.

Results: There was no significant difference between smokers and non-smokers in all evaluation parameters. BASMI scores were significantly lower in the mild dependency subgroup as compared to those with moderate or severe dependency (p?=?.005 and p?=?.007, respectively). Total IIEF score and IIEF categories correlated significantly with BASDAI, BASFI, BASMI, ASQoL, pain, fatigue, and cumulative smoking. BDI showed an inverse correlation with the IIEF score and IIEF category (p?r?=?–0.520, p?r?=?–0.508, respectively).

Conclusions: Sexual function in AS patients is associated with the pain, fatigue, disease activity, functional status, quality of life, depression as well as the cumulative exposure to smoking, and that sexual functions tend to decline with increasing degree of cigarette dependency.  相似文献   
289.
以广州市边缘区为典型案例,深入剖析了大城市边缘区人居环境问题,包括过度依赖外资、生态环境隐患、建设用地无序扩张、违章建筑、房地产开发失衡与基础设施配套滞后、传统文化衰落等,并针对性地提出优化调控措施:促进产业结构改造与升级,完善基础设施和公共服务设施配套,实施生态环境保护与综合整治,加强房地产开发的政府引导,推进边缘区管理体制改革;完善边缘区规划体系。  相似文献   
290.
Analysis of massive datasets is challenging owing to limitations of computer primary memory. Composite quantile regression (CQR) is a robust and efficient estimation method. In this paper, we extend CQR to massive datasets and propose a divide-and-conquer CQR method. The basic idea is to split the entire dataset into several blocks, applying the CQR method for data in each block, and finally combining these regression results via weighted average. The proposed approach significantly reduces the required amount of primary memory, and the resulting estimate will be as efficient as if the entire data set is analysed simultaneously. Moreover, to improve the efficiency of CQR, we propose a weighted CQR estimation approach. To achieve sparsity with high-dimensional covariates, we develop a variable selection procedure to select significant parametric components and prove the method possessing the oracle property. Both simulations and data analysis are conducted to illustrate the finite sample performance of the proposed methods.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号