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   1635篇
  免费   67篇
  国内免费   12篇
管理学   85篇
劳动科学   5篇
民族学   36篇
人口学   31篇
丛书文集   382篇
理论方法论   71篇
综合类   797篇
社会学   120篇
统计学   187篇
  2023年   6篇
  2022年   19篇
  2021年   24篇
  2020年   26篇
  2019年   21篇
  2018年   42篇
  2017年   45篇
  2016年   42篇
  2015年   54篇
  2014年   68篇
  2013年   105篇
  2012年   78篇
  2011年   112篇
  2010年   119篇
  2009年   117篇
  2008年   95篇
  2007年   105篇
  2006年   125篇
  2005年   92篇
  2004年   51篇
  2003年   56篇
  2002年   66篇
  2001年   51篇
  2000年   30篇
  1999年   30篇
  1998年   20篇
  1997年   23篇
  1996年   16篇
  1995年   7篇
  1994年   8篇
  1993年   12篇
  1992年   9篇
  1991年   2篇
  1990年   6篇
  1989年   5篇
  1988年   5篇
  1987年   3篇
  1986年   5篇
  1985年   2篇
  1984年   5篇
  1983年   2篇
  1982年   3篇
  1981年   1篇
  1980年   1篇
排序方式: 共有1714条查询结果,搜索用时 406 毫秒
51.
Objective: The aim of this study was to analyze the age-related recession trajectory of reproductive health indices in middle-aged and elderly Chinese men.

Methods: A population-based cross-sectional study was conducted in Jiashan County, Zhejiang in 2012. Healthy men between 40 and 80 years of age were considered eligible for the study. Physical examination and the sex hormones were measured. The subjects were assessed based on the 5-item version of the International Index of Erectile Function (IIEF-5) for Erectile Dysfunction (ED), and Aging Males’ Symptoms (AMS) scale for Symptomatic Late-Onset Hypogonadism (SLOH).

Results: TG showed a decrease at age 60 years. Testis volume and TT did not show significant difference among the four age groups; cFT began to decrease at age 50 years and Bio-T decreased faster at age 50 years. SHBG and LH increased faster at age 50 and 70 years, respectively. IIEF5 score decrease faster at age 60 years. AMS scores increased faster at age 70 years. With the increase in age, the symptoms of ED and SLOH became severer.

Conclusion: Different indices on reproductive health of men showed turning points at different ages. At first, androgenic sex hormones decreased faster, and then erectile dysfunction got severer, and the last overall male syndromes declined.  相似文献   

52.
Drawing on historical methods, this study assesses the conventional “cyber-sovereignty” framework, which has been used to capture and interpret China’s stance toward global Internet governance. This framework focuses on political control and tends to reduce China’s policies to the attempts by an authoritarian state to elevate governments and intergovernmental organizations to be the only legitimate governors of global cyberspace. As it traces the evolution of China’s relationship with the global Internet in the past three decades, the study demonstrates that China’s stance is more complex than the prevalent framework allows and that it is both built upon and different from the US-centric, market-oriented Internet governance scheme. This study recognizes the inadequacy of the conventional framework and invokes a theory of critical political economy of communication, thereby offering an alternative model to explicate the complex power dynamics behind China’s changing strategies. The alternative model advanced in this study is based on the understanding of China’s evolving approach as the product of multifaceted interactions among a group of power-holders that include both state agencies and business units on the transnational level.  相似文献   
53.
论我国朝鲜族加入中华民族大家庭的历史过程   总被引:4,自引:0,他引:4  
我国朝鲜族加入中华民族大家庭的历史过程,始于清代,经民国、伪满、解放战争时期,直至中华人民共和国成立,最后成为我国公民。在这一过程中,朝鲜族人民与其他民族一道,在开发东北边疆和反帝反封建斗争中,患难与共,结成了深厚的友谊和不可分割的关系。朝鲜族人民不断吸收中华民族的优秀文化,逐步发展成为当之无愧的我国56个民族之一。  相似文献   
54.
在学生发展理论的指导下,美国高校学生管理形成了比较成熟、现代的思想体系,在管理模式、管理理念、管理机构、管理职能、管理队伍、管理经费、管理制度、管理内容、管理方式、管理环境等方面贯穿着"为学生发展服务"的宗旨。美国高校学生管理的实践,对促进我国高校学生工作的改革和发展具有重要的借鉴意义。  相似文献   
55.
本文主要从女性视角的角度论述了萧红的长篇小说《马伯乐》,认为《马伯乐》对传统观念中的“大丈夫”形象作了彻底的否定和消解;它是萧红独特的战时生活体验的抒写,在艺术上也充分显示了一名女性作家观察生活以及表述方式的独特之处。  相似文献   
56.
当代大学生是社会进步的重要推手,其能否树立正确的价值理念,关系到我国社会主义道路的发展进程。基于德育的大学生学业辅导体系,有助于培养具有社会主义理想的有为青年。分析了构建德育化大学生学业辅导体系的内涵,阐述了体系构建中存在的主要问题,并提出了具体的改进建议。  相似文献   
57.
We aimed to apply syndemic theory to verify the association and reinforcing effects between psychosocial problems and multiple sexual partners (MSP) of men who have sex with men (MSM) in Shanghai, China. A cross-sectional study was conducted among 547 MSM in Shanghai, China using a face-to-face survey. Sociodemographic and psychosocial data were collected, as well as information on MSP and condomless anal sex. In the 6 months prior to the survey, 54.3% of the MSM sample had had MSP. Univariate analysis showed that self-esteem, depression, loneliness, sexual compulsivity, and involuntary subordination (IS) were associated with MSP. Sexual compulsivity (multivariate odds ratio [ORm] = 2.94, 95% CI = 1.76–4.91) and IS (ORm = 1.79, 95% CI = 1.14–2.81) remained significant in multivariate analysis. MSM with five or more psychosocial problems had greater odds of (adjusted odds ratios = 3.06, 95% CI = 1.49–6.25) having MSP in the previous 6 months than the non-syndemic group. Our findings provide preliminary confirmation of the additive relationship of syndemic psychosocial health conditions and MSP among MSM in Shanghai, China. An integrated intervention with special focus on sexual compulsivity and IS is needed.  相似文献   
58.
Based on an online survey of a national random sample of the PRSA membership (n?=?650), this study is among the first to explore public relations employees’ own turnover intention and propose three contributing factors for employers to keep top talent in PR industry: a family-supportive organizational environment; the positive, enriching impact of professional work upon practitioners’ life; and PR practitioners’ trust toward employers. Theoretical and practical implications are discussed.  相似文献   
59.
Contemporary theories on leadership development emphasize the importance of having a leader identity in building leadership skills and functioning effectively as leaders. We build on this approach by unpacking the role leader identity plays in the leader emergence process. Taking the perspective that leadership is a dynamic social process between group members, we propose a social network-based process model whereby leader role identity predicts network centrality (i.e., betweenness and indegree), which then contributes to leader emergence. We test our model using a sample of 88 cadets participating in a leadership development training course. In support of our model, cadets who possess a stronger leader role identity at the beginning of the course were more likely to emerge as leaders. However this relationship was only mediated by one form of network centrality, indegree centrality, reflecting one's ability to build relationships within one's group. Implications for research and practice are discussed.  相似文献   
60.
段珅  王大海  姚唐  邱琪 《管理科学》2018,31(6):128-144
  形式多样的促销手段成为企业在激烈市场竞争中赢得胜利的重要方式。已有研究涉及的促销方式直接受益实体都是消费者自身,随着消费者社会责任意识的提高,直接受益实体为慈善机构的捐赠促销活动不断出现,然而很少有学者对不同受益实体的促销方式的效果进行比较。         基于信息框架理论和调节定向理论,以打折促销和捐赠促销为研究对象,运用分类变量中介检验和3阶交互效应方法,通过Spss软件中的Process插件进行Bootstrap中介效应分析,解释调节定向在不同自我建构消费者对两种促销方式偏好关系中的中介作用机制,并引入感知风险和感知稀缺两个变量,探究其在自我建构对消费者促销方式偏好影响中的调节作用。         研究结果表明,调节定向在自我建构与促销方式选择的关系中起中介作用,即拥有独立自我建构的消费者认为促进定向信息说服力更强,从而偏好打折促销方式;拥有依存自我建构的消费者认为防御定向信息说服力更强,从而偏好捐赠促销方式。当感知风险较高时,防御定向信息强化依存自我建构的消费者对捐赠促销方式的偏好;当感知风险较低时,促进定向信息强化独立自我建构的消费者对打折促销方式的偏好。当感知稀缺较高时,防御定向信息强化独立自我建构的消费者对打折促销方式的偏好;当感知稀缺较低时,促进定向信息强化依存自我建构的消费者对捐赠促销方式的偏好。         在理论上拓展了信息框架效应的相关研究,揭示了自我建构与调节定向作用关系的适用边界。通过检验不同自我建构消费者对调节定向相匹配的促销信息评价机制,证明促销活动中的匹配机制可使促销效果更佳。在实践上,为企业在不同消费情景下面对不同特点消费者制定相应的促销活动提供了策略指导,从而提升企业的销售利润。  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