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   1263篇
  免费   28篇
管理学   247篇
民族学   11篇
人口学   92篇
丛书文集   5篇
理论方法论   154篇
综合类   5篇
社会学   550篇
统计学   227篇
  2022年   8篇
  2020年   13篇
  2019年   35篇
  2018年   36篇
  2017年   31篇
  2016年   25篇
  2015年   25篇
  2014年   31篇
  2013年   265篇
  2012年   35篇
  2011年   43篇
  2010年   33篇
  2009年   31篇
  2008年   30篇
  2007年   31篇
  2006年   25篇
  2005年   34篇
  2004年   28篇
  2003年   17篇
  2002年   38篇
  2001年   24篇
  2000年   22篇
  1999年   27篇
  1998年   18篇
  1997年   20篇
  1996年   18篇
  1995年   11篇
  1994年   10篇
  1993年   18篇
  1992年   13篇
  1991年   15篇
  1990年   12篇
  1989年   14篇
  1988年   13篇
  1987年   17篇
  1986年   11篇
  1985年   18篇
  1984年   17篇
  1983年   14篇
  1982年   13篇
  1981年   18篇
  1979年   9篇
  1978年   11篇
  1976年   14篇
  1975年   13篇
  1974年   8篇
  1972年   9篇
  1971年   10篇
  1969年   7篇
  1968年   7篇
排序方式: 共有1291条查询结果,搜索用时 937 毫秒
881.
A wide range of animal and human studies provide evidence for the potential of physical and cognitive exercise in promoting cognitive health later in life. The effects of such activities on intermediate outcomes, such as cognitive performance, are becoming clearer, as are the molecular mechanisms involved. Physical and cognitive exercise might increase "cognitive reserve" and increase the overall health of the brain, thereby reducing or delaying cognitive impairment and dementia. However, conclusive evidence for such benefits is not yet established. The third annual Bedside to Bench conference, cosponsored by The American Geriatrics Society and the National Institutes of Health's National Institute on Aging, reviewed current knowledge regarding the role of physical and cognitive exercise in promoting cognitive vitality. Conference attendees identified gaps in our current understanding of these processes and recommended next steps for research. In particular, researchers will need to explore clinical issues related to the timing, intensity, and duration of various types and combinations of physical and cognitive activities in animal models to elucidate the mechanisms involved and inform the design of future human studies. The concept of the enriched environment currently employed in animal studies to promote physical activity, socialization, and problem solving should be explored in human studies.  相似文献   
882.
883.
884.
885.
The purpose of this study was to evaluate three sets of predictors of attitudes toward homosexuality: (a) anti‐black and orthodox religious attitudes, (b) sexual permissiveness, and (c) the effect of an introductory human sexuality course. Significantly more positive attitudes were expected for those holding more positive attitudes toward blacks and those who were more sexually permissive. A negative relationship was expected for those holding orthodox religious attitudes. Furthermore, information from a college course in human sexuality was expected to produce positive attitude change toward homosexuality. A survey instrument consisting of several scales and indexes measuring the aforementioned variables, as well as several indexes of sexual behavior, was administered to 194 students in a human sexuality course and 120 students in an introductory psychology course. Results showed significant regression coefficients for anti‐black attitudes and religious orthodoxy, confirming the predictions. Sexual permissiveness did not significantly add to the prediction of attitudes toward homosexuality, although the Pearson correlation was significant, r = .19 (p < .05). The experimental group showed significantly greater change in attitude toward homosexuality than the control group, F(1, 291) = 23.70, p < .001. A fourth objective was to assess sex differences on a series of sexual behavioral indexes. Results show a number of significant differences suggesting that sexual behavior still reflects a double standard in U.S. society.  相似文献   
886.
887.
Research on the sexuality of Asians and Latinos in the United States has been sparse, and the studies that have been done suffer from a number of limitations. Using data from the National Latino and Asian American Study (2002–2003), this study examined self-identified sexual orientation and self-reported sexual behavior among Latinos (n = 2,554; age: M = 38.1, SE = 0.5) and Asians (n = 2,095; age: M = 41.5, SE = 0.8). This study also investigated implications for unfair treatment and psychological distress among sexual minorities identified in the sample. Results indicated heterogeneity in responses to items assessing sexual orientation and sexual behavior including differences in the adoption of lesbian, gay, or bisexual (LGB) identity by gender, ethnicity, nativity, and socioeconomic status. LGB sexual minorities reported higher levels of unfair treatment and psychological distress compared to their non-LGB-identified sexual minority counterparts, and unfair treatment was positively associated with psychological distress. Results highlight the need to consider multiple demographic factors in assessing sexuality, and also suggest that measures of both self-identified sexual orientation and sexual behavior should be collected. In addition, findings provide support for the deleterious influence of unfair treatment among Asians and Latinos in the United States.  相似文献   
888.
889.
Abstract

This paper examines contemporary Kenyan popular fiction as a site of cultural production, where the contradictions of African modernity are played out. The paper focuses on one of Kenya's oldest popular fiction columns, Whispers, published in local newspapers since 1983. Constructed around a Kenyan family, which is deployed as an allegorical trope to read modern Kenya, the paper explores how the column introduces us to the anxieties that define life in contemporary Kenya. Although the narrative comprises many thematic concerns, reference is particularly made to the restive masculinity threatened by social change. The paper also provides a discussion of the constant ‘backward glance’, an attempt to look for stability in the past, part of the society's relentless search for models that could help Kenyans make sense of an uncertain present, and an even more doubtful future. The paper also engages with the narrative mode of this fiction, examining how humour, satire and parody deceptively make light of what are important issues affecting society.  相似文献   
890.
We test hypotheses regarding generational differences in the effects on organizational loyalty of workplace insecurity, restructured workplace temporalities, and technological access to the workplace. We argue that large-scale social changes have eroded the social employment contract and impacted these features of the workplace. Further, these new working conditions will have a greater impact on the organizational loyalty and commitment of older cohorts of workers whose expectations were formed under the previous social contract than on more recent cohorts. With the exception of insecurity, our results generally support our hypotheses. They also have some intriguing implications that the conditions that dampen the loyalty of older cohorts enhance that of younger. Likewise, they raise important questions about what factors affect the loyalty of younger generations of workers and what role the increasing reliance on technology for work outside of “normal” working hours might play in fostering loyal employees.  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