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   15846篇
  免费   188篇
管理学   1913篇
民族学   84篇
人才学   5篇
人口学   1469篇
丛书文集   88篇
教育普及   2篇
理论方法论   1424篇
现状及发展   1篇
综合类   190篇
社会学   7844篇
统计学   3014篇
  2023年   90篇
  2021年   89篇
  2020年   278篇
  2019年   429篇
  2018年   394篇
  2017年   559篇
  2016年   385篇
  2015年   308篇
  2014年   368篇
  2013年   2658篇
  2012年   566篇
  2011年   497篇
  2010年   378篇
  2009年   365篇
  2008年   406篇
  2007年   413篇
  2006年   394篇
  2005年   367篇
  2004年   359篇
  2003年   332篇
  2002年   324篇
  2001年   385篇
  2000年   309篇
  1999年   306篇
  1998年   263篇
  1997年   229篇
  1996年   242篇
  1995年   226篇
  1994年   228篇
  1993年   205篇
  1992年   238篇
  1991年   239篇
  1990年   209篇
  1989年   202篇
  1988年   207篇
  1987年   184篇
  1986年   180篇
  1985年   200篇
  1984年   205篇
  1983年   188篇
  1982年   149篇
  1981年   119篇
  1980年   138篇
  1979年   137篇
  1978年   120篇
  1977年   112篇
  1976年   105篇
  1975年   100篇
  1974年   75篇
  1973年   68篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
In this paper we seek to explain the activity presidential position taking on roll call votes in the House. Position taking may help presidents pursue their policy agendas, but time and available resources constrain their ability to take positions. Even though position taking is a discretionary presidential action, it occurs in the legislative arena and, thus, presidents must consider elements in both institutions as well as outside conditions when making this decision. Accordingly, we posit a multiple perspectives approach to explain the number of presidential positions on votes in the House. Our multivariate two-stage least squares regression reveals that variables from all three environments (executive, legislative and exogenous) within our multiple perspectives approach are necessary to adequately explain presidential position taking overall and when divided according to domestic and foreign policy positions.  相似文献   
52.
53.
Nigeria's oil guarantees its role in the global economy; however, the state's overwhelming weaknesses perpetuate a high level of volatility vis-à-vis the potential for an immediate disruption of the national, regional, and global environment. This study presents a current qualitative analysis of Nigeria to produce a model that characterizes current conditions in the state and the state response to the nefarious acts in the delta region. This model will serve as a baseline for a significant iteration of the model that reflects the delta region counter-insurgency at various levels of strength: a what-if scenario of the region with an increase of state security over southern separatists, insurgents seeking to gain control of the oil assets. The conjectured model serves to inform/educate decision and policy makers in developing proactive, effective strategies to counter existent and potential threats in the Niger Delta.  相似文献   
54.
While there is a global shift towards smaller families, some groups maintain relatively high fertility rates. The 2013 New Zealand census data were used to investigate the nature of fertility between ethnicities in New Zealand. The NZ Deprivation Index 2013 was used as a measure of socioeconomic status to determine the relationships with fertility. The results mirror research outside of New Zealand in that socioeconomic status is inversely correlated to fertility. Using crude average fertility rates, sole-ethnicity Pasifika and Māori ethnic groups still have substantially higher fertility than sole-ethnicity Europeans and Asians ethnic groups, even when simultaneously accounting for age, socioeconomic status, education, and religious affiliation. Christians have more children than individuals reportedly without any religion, and fertility rates drop on average for mothers who have higher formal qualifications. Our findings suggest that cultural, or other ethnic-specific factors differentially affect fertility for Māori, Pasifika, New Zealand European, and Asians as aggregated ethnic categories, respectively.  相似文献   
55.
56.
Unusual events, beyond mere coincidences, may occur during the course of psychotherapy. Yet, clinical training often does not prepare therapists how to understand and potentially engage with these encounters. The aim of this report is to explore the emergence of synchronistic events in therapy, while providing two clinical case composites to illustrate the author’s central points. Drawing on the Celtic concept of “thin places,” a new understanding of synchronicities and the therapeutic relationship is offered.  相似文献   
57.
58.
Correspondence to Bruce A. Thyer, Ph.D., School of Social Work, The University of Georgia, Athens, G A 30602, USA. Summary Critics of applying conventional quantitative research methodsto the problems of social work practice research have ignoredthe considerable progress which has been achieved during thepast decade in scientifically documenting the effectivenessof social services. A set of First Principles of Practice Researchis outlined for use by researchers in the design and conductof practice research, and for use by the consumers of researchto evaluate the methodological rigour of practice experiments.The advocates of qualitative research are urged to provide theprofession with similar positive examples of research on theoutcomes of social work practice, and to develop explicit guide-linesfor the conduct of qualitative studies.  相似文献   
59.
Objectives. The purpose of this study was to extend research on the connection between school size and student outcomes by examining how school size was related to interpersonal processes and whether the interpersonal effects of school size varied by race/ethnicity. Methods. We applied multilevel modeling techniques to a sample of 14,966 students in 84 schools from the National Longitudinal Study of Adolescent Health. Results. Increasing school size was associated with decreasing student attachment to school and to teachers as well as extracurricular participation. Student attachment and teacher bonding diminished with increasing school size at a decreasing rate (reaching minimums in schools with between 1,700–2,000 students), but extracurricular participation dropped at a steady rate. These patterns did not differ substantially by race/ethnicity. Conclusions. The size of the educational institution influences interpersonal dynamics among actors in the institution and does so similarly across student groups. More generally, this research demonstrates the importance of organizational characteristics for social life.  相似文献   
60.
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