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   11892篇
  免费   266篇
  国内免费   1篇
管理学   1472篇
民族学   54篇
人才学   3篇
人口学   1089篇
丛书文集   57篇
理论方法论   1026篇
综合类   103篇
社会学   5633篇
统计学   2722篇
  2023年   57篇
  2021年   64篇
  2020年   174篇
  2019年   218篇
  2018年   324篇
  2017年   433篇
  2016年   278篇
  2015年   235篇
  2014年   287篇
  2013年   2208篇
  2012年   418篇
  2011年   315篇
  2010年   289篇
  2009年   211篇
  2008年   253篇
  2007年   255篇
  2006年   261篇
  2005年   246篇
  2004年   194篇
  2003年   207篇
  2002年   216篇
  2001年   321篇
  2000年   288篇
  1999年   269篇
  1998年   204篇
  1997年   169篇
  1996年   219篇
  1995年   189篇
  1994年   199篇
  1993年   168篇
  1992年   201篇
  1991年   213篇
  1990年   196篇
  1989年   170篇
  1988年   193篇
  1987年   179篇
  1986年   141篇
  1985年   176篇
  1984年   180篇
  1983年   156篇
  1982年   122篇
  1981年   97篇
  1980年   97篇
  1979年   121篇
  1978年   93篇
  1977年   81篇
  1976年   57篇
  1975年   63篇
  1974年   67篇
  1973年   60篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
981.
There is a strong suggestion that the siblings of handicapped children are at risk psychologically. Factors which contribute to this risk, aspects of the sibling relationship, and the siblings' issues, concerns and feelings are discussed so that professionals may have a framework within which to assess and evaluate these children's needs. Case examples are given.  相似文献   
982.
983.
This study surveyed 975 undergraduates attending a large East Coast university during the spring semester of the 1987/88 academic year. A convenience sample of predominantly black students (94%) participated. Overall, knowledge of basic AIDS-related facts was satisfactory. Raw scores on the 25-item knowledge scale ranged from 7 to 25, with a mean of 20.5 (82%) and a mode of 22 (88%). Selected questions on how HIV is not transmitted, however, posed some problems for respondents. Less than 30% of respondents knew that the AIDs virus was not transmitted by insects; less than 80% knew that AIDS was not transmitted on toilet seats, through blood donations, kissing, and coughing. The survey also asked students whether they had ever engaged in certain behaviors that put them at risk of HIV infection. Approximately 17% of respondents had experienced anal intercourse, 6.5% reported use of heroin, 32.6% reported having had multiple sex partners, and 16% had been treated for a sexually transmitted disease. Students who reported engaging in high-risk behaviors had statistically significant lower mean knowledge scores than those who reported not engaging in those same high-risk behaviors. Results of the study support the need to increase efforts to deliver AIDS information specifically targeted to individuals who may be engaged in high-risk behaviors. Special health education programs must be designed to focus attention on risk behaviors (ie, unprotected anal intercourse) instead of risk groups (ie, homosexual and bisexual males).  相似文献   
984.
The college student-athlete: psychological considerations and interventions   总被引:1,自引:0,他引:1  
This article reviews the literature dealing with problems brought by student-athletes to college counseling and mental health centers. Among the issues discussed are fear of success; identity conflict; social isolation; poor athletic performance; academic problems; and career or vocational concerns. In addition, the authors examine the paradox that although athletes experience as much or more psychological distress as nonathletes, research indicates that athletes use professional services less often than nonathletes. Finally, the authors review approaches to psychological intervention, including short-term psychotherapy, very brief interventions, cognitive behavioral therapy, and career/vocational counseling, and discuss special considerations for conducting therapy with athletes.  相似文献   
985.
This article describes a computerized career resource network designed to assist in matching students, efficiently and cost-effectively, with professionals in their career fields of interest.  相似文献   
986.
987.
A note on social capital and network content   总被引:1,自引:0,他引:1  
As a guide to selecting name generators for social capital research, I use network data on a probability sample of heterogeneous senior managers to describe how they sort relations into kinds, and how the kinds vary in contributing to social capital. Managers sort relations on two dimensions of strength - intimacy (especially close versus distant) versus activity (frequent contact with new acquaintances versus rare contact with old friends) - and with respect to two contents - personal discussion (confiding and socializing relations) versus corporate authority (the formal authority of the boss and informal authority of essential buy-in). Comparing name generators for their construct validity as indicators of social capital, I compute network constraint from different kinds of relations, and correlate constraint with early promotion. The correlation is strong for the network of personal relations, zero for the network of authority relations, and strongest for personal and authority relations together. I close with research design recommendations for selecting name generators.  相似文献   
988.
P. S. Nair 《Demography》1985,22(1):133-142
Two models, hierarchical in terms of input data requirements, are proposed to estimate place-to-place gross migration flows during a specified time period. In the first, the input data required are lifetime migration flows and the marginal totals of period migration, usually available from national censuses. The estimational algorithm is a ‘bi-proportional adjustment’ technique (and its variant) that assumes structural similarity between lifetime and period migration flows. The second model is designed to account for possible structural deviations in recent migratory patterns. Calibration of the procedure to replicate Indian and Korean data confirms high validity of estimation.  相似文献   
989.
990.
This paper presents a limited assessment of the conservatism of the Accident Sequence Evaluation Program (ASEP) human reliability analysis (HRA) procedure described in NUREG/CR-4772. The data for this study are derived from simulator examination reports from the NRC requalification examination cycle for nuclear power plant operators. The ASEP procedure was used to estimate human error probability (HEP) values for critical tasks, and the HEP results were compared with the failure rates observed in the examinations. The ASEP procedure was applied by PNNL operator license examiners who supplemented the limited information in the examination reports with expert judgment based upon their extensive simulator examination experience. Comparison of the average of the ASEP HEP values with the fraction of the population actually failed and demonstrated that the ASEP HEP values are larger (conservative) by a statistically significant average factor of two. Partitioning of tasks into subgroups based on the ASEP HEP values and comparison of the subgroup average ASEP HEP values with observed subgroup failure rates showed little or no conservatism for small ASEP HEP values, but considerable conservatism for larger ASEP HEP values.  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