全文获取类型
收费全文 | 14144篇 |
免费 | 391篇 |
国内免费 | 3篇 |
专业分类
管理学 | 2155篇 |
民族学 | 83篇 |
人才学 | 9篇 |
人口学 | 1255篇 |
丛书文集 | 73篇 |
理论方法论 | 1371篇 |
综合类 | 155篇 |
社会学 | 6659篇 |
统计学 | 2778篇 |
出版年
2023年 | 78篇 |
2021年 | 88篇 |
2020年 | 228篇 |
2019年 | 317篇 |
2018年 | 410篇 |
2017年 | 474篇 |
2016年 | 392篇 |
2015年 | 278篇 |
2014年 | 356篇 |
2013年 | 2319篇 |
2012年 | 482篇 |
2011年 | 474篇 |
2010年 | 361篇 |
2009年 | 328篇 |
2008年 | 335篇 |
2007年 | 400篇 |
2006年 | 355篇 |
2005年 | 392篇 |
2004年 | 338篇 |
2003年 | 309篇 |
2002年 | 314篇 |
2001年 | 311篇 |
2000年 | 336篇 |
1999年 | 295篇 |
1998年 | 239篇 |
1997年 | 227篇 |
1996年 | 220篇 |
1995年 | 188篇 |
1994年 | 210篇 |
1993年 | 187篇 |
1992年 | 237篇 |
1991年 | 184篇 |
1990年 | 171篇 |
1989年 | 166篇 |
1988年 | 162篇 |
1987年 | 141篇 |
1986年 | 146篇 |
1985年 | 164篇 |
1984年 | 180篇 |
1983年 | 175篇 |
1982年 | 153篇 |
1981年 | 133篇 |
1980年 | 133篇 |
1979年 | 138篇 |
1978年 | 120篇 |
1977年 | 111篇 |
1976年 | 108篇 |
1975年 | 93篇 |
1974年 | 93篇 |
1973年 | 78篇 |
排序方式: 共有10000条查询结果,搜索用时 750 毫秒
961.
962.
963.
964.
A method of analyzing mortality rates in heterogeneous populations is presented. This method, appropriate for the investigation of mortality rates in small geographic areas (e.g., counties) where the forces of mobility operate to selectively “package” persons, is applied to the determination of whether a spatial west-east gradient in cancer mortality rates existed in North Carolina over the period 1970 to 1975. A significant gradient (as well as a significant temporal trend) is determined to exist in the data, though only for particular race, age and sex-specific demographic groups. Several alternate hypotheses are presented to explain the existence of the spatial gradient in these particular demographic groups. 相似文献
965.
966.
967.
968.
A two-dimensional model of inner and outer self-esteem is discussed wherein inner self-esteem is hypothesized to be an outcome of self-evaluations of performance in prominent role identities. Outer self-esteem is hypothesized to be related to self-evaluations of both prominent and nonprominent role identities. The research context is a comparison of the different processes facilitating self-esteem in innovative schools (emphasis on student-initiated activities and control) and traditional (emphasis on pre-determined curriculum and teacher-administrator control). Data across school type demonstrate a modest correlation between positive self-evaluations of performance in prominent role identities and both types of self-esteem. The data suggest that high evaluation of performance in nonprominent role identities is related to outer self-esteem but not to inner self-esteem. Further empirical clarification of the concepts was established by viewing the relationships within school type. In the innovative schools both types of self-esteem were predominantly related to positive evaluations of prominent role identities, whereas in the traditional schools both types of self-esteem were related to both performance in prominent and nonprominent role identities. Thus the theoretical distinction gained partial support while the process of gaining self-esteem was shown to be essentially different between alternate school structures. Controls for social desirability, race, sex, and father's occupation did not change these findings. 相似文献
969.
Nicholas G. Petryszak 《The Sociological quarterly》1981,22(1):137-138
970.