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   20227篇
  免费   614篇
  国内免费   1篇
管理学   2687篇
民族学   112篇
人口学   1832篇
丛书文集   89篇
教育普及   1篇
理论方法论   1820篇
综合类   193篇
社会学   10267篇
统计学   3841篇
  2023年   132篇
  2021年   136篇
  2020年   354篇
  2019年   520篇
  2018年   623篇
  2017年   809篇
  2016年   620篇
  2015年   417篇
  2014年   587篇
  2013年   3641篇
  2012年   752篇
  2011年   698篇
  2010年   515篇
  2009年   424篇
  2008年   552篇
  2007年   494篇
  2006年   533篇
  2005年   444篇
  2004年   436篇
  2003年   366篇
  2002年   388篇
  2001年   483篇
  2000年   429篇
  1999年   415篇
  1998年   321篇
  1997年   281篇
  1996年   286篇
  1995年   296篇
  1994年   254篇
  1993年   270篇
  1992年   315篇
  1991年   313篇
  1990年   304篇
  1989年   267篇
  1988年   260篇
  1987年   211篇
  1986年   235篇
  1985年   261篇
  1984年   226篇
  1983年   198篇
  1982年   173篇
  1981年   138篇
  1980年   161篇
  1979年   181篇
  1978年   142篇
  1977年   127篇
  1976年   95篇
  1975年   99篇
  1974年   92篇
  1973年   69篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
Using confidential microdata from the US Census Bureau, we investigate the performance of Asian-owned businesses. Using regression estimates and a special non-linear decomposition technique, we explore the role that class resources, such as financial capital and human capital, play in contributing to the relative success of Asian businesses. We find that Asian-owned businesses are more successful than white-owned businesses for two main reasons—Asian owners have high levels of human capital and their businesses have substantial start-up capital. Using detailed information on both the owner and the firm, we estimate the explanatory power of several additional factors.
Robert W. Fairlie (Corresponding author)Email:
  相似文献   
992.
This qualitative study focuses on the different ways time is experienced by children in families who face time challenges because of a family member's job that required work travel. Data are from a family‐level study that includes interviews of all family members older than age 7. Using grounded theory methodology, this study illustrates the ways in which job demands and family processes interact. The analysis centers on 75 children's perspectives from 43 families. Holding together assessments of having enough time while wanting more time with their parents, children express emotion, generally unrecognized by parents, around the topic of family time. Children's experience of time with parents is rushed or calm, depending on the activities done in time and the gender of the parent with whom they spend time. Findings are interpreted through a feminist social constructionist lens.  相似文献   
993.
Sexual harassment on college campuses is a frequent occurrence and serious public health concern. Victims of sexual harassment are at risk for many possible negative health consequences. In addition, certain psychological distress symptoms and/or alcohol use may put individuals at increased risk of being victims of sexual harassment. Data from more than 2,000 college students in the Midwestern United States were used to examine reciprocal causal effects of the relations between (a) experiencing sexual harassment and alcohol use and (b) experiencing sexual harassment and psychological distress symptoms, specifically depression and anger/hostility. Analyses were conducted separately for sexual harassment which occurs at school and which occurs in college students’ workplaces, and also separately for men and women. Results of cross-lagged panel models showed that there were reciprocal causal effects between sexual harassment and alcohol problems, depression, and anger. Discussion focuses on the overall patterns of results as well as the nuances within these findings.  相似文献   
994.
Bisexual youth are at elevated risk for depression when compared with lesbians and gay men. Research on bisexual stigma suggests that these youth are uniquely vulnerable to stress related to sexual identity disclosure. Depression associated with this stress may be buffered by social support from parents and friends. We examined the differential influence of social support from parents and friends (Child and Adolescent Social Support Scale) on the relation between disclosure stress (LGBTQ Coming Out Stress Scale) and depressive symptoms (Beck Depression Inventory) and differences by gender in a sample of cisgender bisexual youth (N = 383) using structural equation modeling. Parental support buffered the association between stressful disclosure to family and depressive symptoms, especially for bisexual men; bisexual women seemed not to benefit from such support when disclosure stress was high. This nuanced examination elucidates the ways family members and clinicians can best support bisexual youth sexual identity disclosure.  相似文献   
995.
This article analyzes the impact of religion on reported levels of subjective well‐being (general happiness) among lesbian, gay, bisexual, and transgender (LGBT) adults. Although previous studies find religious affiliation to be a significant predictor of subjective well‐being among the general population in the United States, limited quantitative research investigates general happiness among sexual and gender minorities. This study augments the existing literature by using a national survey of LGBT adults conducted by the Pew Research Center in 2013. The results show that religious affiliation is a significant predictor of LGBT individuals’ happiness. LGBT individuals who identify as Catholic, agnostic or atheist, or with no particular religious affiliation report lower levels of happiness compared to mainline Protestants. Surprisingly, no significant differences are found between mainline Protestants (whose church doctrine often accepts same‐sex relations) and evangelical Protestants (whose church doctrine often condemns same‐sex relations). In addition, income is the only control variable that affects general happiness. Our analysis reveals interesting differences in the determinants of subjective well‐being between the LGBT and general population.  相似文献   
996.
In this interpretive case study the researchers examined the beliefs of 13 self-identifying race-conscious secondary social studies teachers from diverse racial or ethnic, gender, and school-context backgrounds. The researchers found that the teachers' beliefs and views of practice were generally aligned with the main assertions of critical race theory. The teachers described their personal and professional experiences as a major influence on their race-conscious beliefs and views of practice. Moreover, teachers in diverse contexts described having to learn how to navigate the different racial experiences of the students in their classrooms, while teachers in racially segregated contexts (predominately White, Black, or Latino) emphasized the importance of teaching their students about others. Finally, despite the teachers' regular integration of race-related issues into their required and elective courses, they expressed a desire to have more opportunities to teach about race.  相似文献   
997.
Researchers have found that when young people participate in discussions of controversial political issues, they often become more politically engaged and informed (Hess, 2009 Hess, Diana E. (2009). Controversy in the classroom: The democratic power of discussion. New York, NY: Routledge.[Crossref] [Google Scholar]). Nonetheless, some educators avoid fostering such discussions because they can become heated and distract from academic learning (Hess, 2002 Hess, Diana E. (2002). Discussing controversial public issues in secondary social studies classrooms: Learning from skilled teachers. Theory &; Research in Social Education, 30(1), 1041.[Taylor &; Francis Online] [Google Scholar]). Presidential elections, including the highly publicized debates, provide substantial material for discussions of major national and international issues, but no published research has examined how educators can leverage these events to generate productive civic learning experiences. In this article, we analyze data collected in seven high school classrooms during the 2012 presidential election to examine the challenges and opportunities associated with generating substantive, dynamic discussions of presidential debates. Our findings indicate that students enjoyed learning about candidates' different perspectives and that certain strategies were especially helpful for fostering substantive discussions: (a) scaffolding students' preparation for discussion; (b) providing opportunities for students to address open-ended questions; (c) redirecting students' engagement in competitive, interpersonal dynamics to learning about public issues; and (d) countering students' partisan tendencies. We discuss implications for practice and research and present a conceptual framework for generating dynamic, substantive democratic discussions.  相似文献   
998.
Contemporary global issues can be examined through the lens of modern photographic art. In an effort to prepare global-ready graduates, this article explores the pressing problems of environmental degradation, urbanization, and homelessness through the work of three contemporary artists. Illustrative works, suggested approaches, and curriculum resources are provided.  相似文献   
999.
Teachers learned knowledge, skills, values, and dispositions through spending significant amounts of time working with heritage sites as they learned more about social studies. Elementary social studies teachers engaged in teacher in-service to increase their abilities to meet geography standards. Teacher professional development that caused instructors to engage with cultural and historic sites benefited them and should be considered as well as other models of teacher in-service. Teachers used study travel opportunities to engage in geographic investigation and exploration to accomplish inquiry. Teachers determined that extended time was required to experience the place, to value it, and to harbor the disposition to teach about it; they learned in-depth content from spending time on-site, and they learned skills to extract knowledge from site through reading the landscape. Teachers encountered multiple perspectives, technology, and controversial issues through their studies of regions in the Ohio River Valley. Teachers of elementary social studies may wish to consider this type of professional development to understand a sense of place and how it relates to the curriculum they teach.  相似文献   
1000.

Background

School shootings have approached epidemic levels in recent years. While mental illness is undoubtedly involved in nearly all cases of mass school violence, we sought to determine how environmental context may exacerbate preexisting personal factors. The present study investigated the associations between mass school shootings, school enrollment size, student–teacher ratios, and student transitions.

Method

Our sample consisted of twenty-two mass school shooting cases between January 1995 and June 2014. Information about school shootings was gathered using preexisting school shooting databases and news media reports. Using state and national databases, data regarding school size and student–teacher ratios of incident schools were collected. Information about schools where shooters previously attended, as well as state average school statistics, were also obtained.

Findings

Schools where mass shootings occurred had significantly higher enrollments than their state average counterparts. Additionally, students who committed a mass school shooting were significantly more likely to have previously attended a school with a smaller student body and/or a lower than state average student–teacher ratio.

Conclusion

Our findings are consistent with previous literature indicating that smaller schools are less likely to experience acts of mass violence. Additionally, our results suggest that transitioning from a smaller, more supportive school to a larger, more anonymous school may exacerbate preexisting mental health issues among potential school shooters. The results of this study have significant implications for educational policy reform.  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