全文获取类型
收费全文 | 16629篇 |
免费 | 443篇 |
专业分类
管理学 | 2207篇 |
民族学 | 79篇 |
人才学 | 2篇 |
人口学 | 1438篇 |
丛书文集 | 98篇 |
教育普及 | 3篇 |
理论方法论 | 1646篇 |
综合类 | 162篇 |
社会学 | 8805篇 |
统计学 | 2632篇 |
出版年
2023年 | 73篇 |
2021年 | 78篇 |
2020年 | 221篇 |
2019年 | 316篇 |
2018年 | 321篇 |
2017年 | 463篇 |
2016年 | 376篇 |
2015年 | 275篇 |
2014年 | 380篇 |
2013年 | 3184篇 |
2012年 | 462篇 |
2011年 | 451篇 |
2010年 | 344篇 |
2009年 | 339篇 |
2008年 | 382篇 |
2007年 | 379篇 |
2006年 | 386篇 |
2005年 | 404篇 |
2004年 | 382篇 |
2003年 | 333篇 |
2002年 | 366篇 |
2001年 | 412篇 |
2000年 | 361篇 |
1999年 | 386篇 |
1998年 | 278篇 |
1997年 | 246篇 |
1996年 | 293篇 |
1995年 | 294篇 |
1994年 | 293篇 |
1993年 | 313篇 |
1992年 | 304篇 |
1991年 | 292篇 |
1990年 | 295篇 |
1989年 | 261篇 |
1988年 | 261篇 |
1987年 | 227篇 |
1986年 | 212篇 |
1985年 | 233篇 |
1984年 | 227篇 |
1983年 | 173篇 |
1982年 | 176篇 |
1981年 | 149篇 |
1980年 | 159篇 |
1979年 | 159篇 |
1978年 | 140篇 |
1977年 | 125篇 |
1976年 | 123篇 |
1975年 | 127篇 |
1974年 | 86篇 |
1973年 | 81篇 |
排序方式: 共有10000条查询结果,搜索用时 890 毫秒
991.
992.
Page's model of marital fertility by age and duration is fitted by maximum likelihood techniques to data from 38 of the 41 developing countries that participated in the World Fertility Survey. The results indicate that the model does an excellent job of capturing variations in fertility patterns, with only two parameters. Moreover, national-level estimates of the parameter representing the degree of control of marital fertility correlate reasonably well with the proportion using contraception. On the other hand, estimates of the parameter representing the level of natural fertility correlate well with the duration of breastfeeding and with a measure of contraceptive use for spacing, but also show substantial regional variation. The paper closes with comments on several extensions and applications of the model. 相似文献
993.
Jiajian Chen Robert D. Retherford Minja Kim Choe Li Xiru Cui Hongyan 《Population studies》2013,67(1):43-60
An analysis of data mainly from China's 1990 and 2000 censuses and 2005 mini-census shows how fertility decline between 1975 and 2005 in the province of Guangdong has been influenced by both fertility policy and economic and social development. Guangdong's development since 1975 has been very rapid and has attracted huge numbers of migrants from other provinces. The analysis of the province's fertility trend from 1975 shows clearly the influence of fertility policy on the trend. The analysis also shows that economic development has brought about large changes in population composition by urban/rural residence, education, occupation, and migration status, which, together with large fertility differentials by these characteristics, have contributed substantially to Guangdong's fertility decline, in large part through changes in proportions currently married. 相似文献
994.
Ruth Stein Ph.D. 《Studies in Gender and Sexuality》2013,14(1):38-58
This paper inquires into the kind of desire specific to the fundamentalist mode. The author suggests that the simplistic, black-and-white, ostensibly “horizontal” divisions between good and evil, right and wrong, pure and impure that characterize the fundamentalist sensibility create at the same time two phenomena: (a) gross emotional intensity that endows experience with a stark quality (e.g., grandiosity and abjection), and (b) a “vertical” division that constructs basic inequalities. The “vertical” difference between the believer and his God intensifies longing and mystical desire. The longing of the holder of such desire is to merge with a tantalizing, perfect, and cruel God and to renounce his individuality and even life. The concept of a “regression-to-the father” is a tempting and potentially dangerous process of abnegation if not countered by the need to overcome the “father” one so submissively desires. 相似文献
995.
This study describes the implementation of three evidence-based treatments addressing traumatic stress symptoms within a wraparound foster care program in Illinois. Child–Parent Psychotherapy (CPP), Trauma-Focused Cognitive Behavioral Therapy (TF-CBT), and Structured Psychotherapy for Adolescents Responding to Chronic Stress (SPARCS) were implemented with a racially diverse sample of youth ages 3–18 at six agencies. Culturally sensitive adaptations were made to treatment approaches to improve client retention and outcomes. Data analyses revealed no racial differences in retention in the program and no differences in outcomes between minority youth exposed to the intervention and other participants. All three evidence-based treatments were effective in reducing symptoms and improving functioning among minority youth. Implementation issues, including challenges and culturally competent accommodations, are discussed. 相似文献
996.
997.
998.
999.
1000.
This paper presents an analysis of levels of life expectancy and their patterns of change among six socio-economically differentiated sub-populations of England and Wales for the period 1851–1911. Differences in mortality levels among these sub-groups and their rates of change are analyzed with respect to three groups of explanatory variables, viz., environmental, stratification and demographic variables. Their relative importance for different periods is assessed and discussed. The findings show consistency with two previous studies, which have suggested that medical advances had little effect on the increase in life expectancy during the second half of the nineteenth century. The present paper supports the results of one study in that public health measures affected life expectancies earlier, while subsequently, the increase in standards of living was more important. 相似文献