全文获取类型
收费全文 | 8753篇 |
免费 | 237篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1190篇 |
民族学 | 36篇 |
人口学 | 761篇 |
丛书文集 | 32篇 |
理论方法论 | 764篇 |
综合类 | 142篇 |
社会学 | 4041篇 |
统计学 | 2025篇 |
出版年
2020年 | 135篇 |
2019年 | 189篇 |
2018年 | 182篇 |
2017年 | 299篇 |
2016年 | 198篇 |
2015年 | 173篇 |
2014年 | 199篇 |
2013年 | 1650篇 |
2012年 | 259篇 |
2011年 | 221篇 |
2010年 | 206篇 |
2009年 | 177篇 |
2008年 | 251篇 |
2007年 | 239篇 |
2006年 | 196篇 |
2005年 | 164篇 |
2004年 | 150篇 |
2003年 | 144篇 |
2002年 | 158篇 |
2001年 | 198篇 |
2000年 | 181篇 |
1999年 | 162篇 |
1998年 | 143篇 |
1997年 | 135篇 |
1996年 | 133篇 |
1995年 | 119篇 |
1994年 | 93篇 |
1993年 | 133篇 |
1992年 | 151篇 |
1991年 | 126篇 |
1990年 | 134篇 |
1989年 | 113篇 |
1988年 | 110篇 |
1987年 | 114篇 |
1986年 | 108篇 |
1985年 | 97篇 |
1984年 | 121篇 |
1983年 | 109篇 |
1982年 | 97篇 |
1981年 | 65篇 |
1980年 | 97篇 |
1979年 | 105篇 |
1978年 | 75篇 |
1977年 | 86篇 |
1976年 | 78篇 |
1975年 | 92篇 |
1974年 | 70篇 |
1973年 | 56篇 |
1972年 | 61篇 |
1971年 | 54篇 |
排序方式: 共有8991条查询结果,搜索用时 31 毫秒
971.
School Size and the Interpersonal Side of Education: An Examination of Race/Ethnicity and Organizational Context* 总被引:1,自引:0,他引:1
Robert Crosnoe Monica Kirkpatrick Johnson Glen H. Elder 《Social science quarterly》2004,85(5):1259-1274
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
972.
We introduce a number of new methods based on sequence analysis to test hypotheses on the de-standardization of family-life trajectories in early adulthood, using Fertility and Family Survey data on 19 countries. Across cohorts, family-life trajectories of young adults have not become more turbulent. However, in most countries family-life trajectories of young adults have become less similar to one another and the variation in the types of family-trajectories has increased. Contrary to expectations, no clear differences in de-standardization were observed between countries characterized by a social-democratic welfare-state regime and countries characterized by either liberal or conservative welfare-state regimes. 相似文献
973.
QUANTILES OF SUMS AND EXPECTED VALUES OF ORDERED SUMS 总被引:1,自引:0,他引:1
Watson & Gordon (1986) investigated the relationship between the quantiles of a sum of independent continuous random variables and the sum of the individual quantiles. In this note some further results are obtained. Also corresponding relationships are developed for the expected values of the order statistics of a sum, and for the sum of the expected values of the individual order statistics. 相似文献
974.
975.
976.
977.
978.
A consumer satisfaction scale was developed for psychiatric inpatients. The scale was administered to a state-wide sample of (n = 366) patients discharged from acute psychiatric units throughout Missouri. The scale was factor analyzed and given to another sample of (n = 390) discharges. Three out of five factors that were found in the first sample were replicated in a factor analysis of data from the second sample. Acceptable coefficient alphas were obtained on all three factors, demonstrating internal reliability. The three factors were labeled Treatment Effectiveness, Trust of Staff, and Hospital Environment. Comparable levels of satisfaction with prior studies were found on the first general satisfaction factor of Treatment Effectiveness. Subjects discriminated areas of satisfaction by expressing higher levels of dissatisfaction on the factors of Trust of Staff and Hospital Environment. 相似文献
979.
980.
H M Estrin 《Journal of American college health : J of ACH》1989,37(6):283-287
A system of classifying, managing, and tracking abnormal Papanicolaou (Pap) smears was used at a California university where 3,289 patients were tested. Classification was based on use of the latest cytopathological techniques for identifying characteristics associated with dysplasia and human papilloma virus (HPV). The follow-up success rate was determined for 6-month repeat Pap smears, colposcopy patient contact, and biopsy results. Pathology report correlations were determined for the noncolposcopy group by using repeat Pap smear results. Biopsy results were correlated with Pap smear readings for accuracy and yielded significant statistical information for the program. 相似文献