全文获取类型
收费全文 | 15754篇 |
免费 | 466篇 |
国内免费 | 2篇 |
专业分类
管理学 | 2202篇 |
民族学 | 93篇 |
人才学 | 4篇 |
人口学 | 1435篇 |
丛书文集 | 105篇 |
教育普及 | 1篇 |
理论方法论 | 1668篇 |
综合类 | 275篇 |
社会学 | 8244篇 |
统计学 | 2195篇 |
出版年
2021年 | 86篇 |
2020年 | 225篇 |
2019年 | 352篇 |
2018年 | 363篇 |
2017年 | 530篇 |
2016年 | 381篇 |
2015年 | 299篇 |
2014年 | 361篇 |
2013年 | 2659篇 |
2012年 | 528篇 |
2011年 | 530篇 |
2010年 | 395篇 |
2009年 | 406篇 |
2008年 | 412篇 |
2007年 | 448篇 |
2006年 | 448篇 |
2005年 | 413篇 |
2004年 | 387篇 |
2003年 | 325篇 |
2002年 | 358篇 |
2001年 | 376篇 |
2000年 | 331篇 |
1999年 | 300篇 |
1998年 | 240篇 |
1997年 | 228篇 |
1996年 | 243篇 |
1995年 | 214篇 |
1994年 | 221篇 |
1993年 | 211篇 |
1992年 | 220篇 |
1991年 | 208篇 |
1990年 | 210篇 |
1989年 | 211篇 |
1988年 | 184篇 |
1987年 | 192篇 |
1986年 | 180篇 |
1985年 | 205篇 |
1984年 | 213篇 |
1983年 | 188篇 |
1982年 | 159篇 |
1981年 | 137篇 |
1980年 | 149篇 |
1979年 | 162篇 |
1978年 | 150篇 |
1977年 | 120篇 |
1976年 | 129篇 |
1975年 | 135篇 |
1974年 | 120篇 |
1973年 | 86篇 |
1971年 | 80篇 |
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
271.
272.
A new version of the Profile of Nonverbal Sensitivity Test (PONS)—a standardized test of sensitivity to nonverbal cues—was developed to determine the effects of five levels or sequences of micromomentary movement on accuracy in decoding nonverbal face and body cues, presented for 125 microseconds (msecs). The five sequences were: backward movement, partially backward movement, no movement, partially forward movement, and fully forward movement. Two versions of this test—the Test of Micromomentary Movement Effects (TOMME)—were administered to two samples of female high school and college students. The results, averaged over face and body cues, showed that as the movement sequences more closely approximated the fully forward sequence, decoding accuracy increased. These results, showing the benefits of adding properly sequenced information at split second (42 msec) exposures, not only support the findings of previous researchers that micromomentary facial affect displays may be helpful in decoding nonverbal facial cues, but also suggest that micromomentary movements may be important for decoding body cues as well. 相似文献
273.
"Comparative analysis of out-migration [in the United States]...reveals substantial ethnic differentials. Part of the variation results from group compositional differences in social class and other characteristics normally related to migration, particularly age, education and local birth. Equally important, however, are indicators of social and economic bonds." The data concern 3,345 adults who were first interviewed between 1967 and 1969 in Rhode Island and were reinterviewed in 1970, 1971, and 1979. "The results suggest that ethnic groups characterized by a dense network of social and economic ties do not sponsor out-migration, which has been the emphasis of many past studies of chain migration and migrant assimilation. Rather, they deter out-migration by providing alternative opportunities within the ethnic community." 相似文献
274.
Abstract The practice of post-partum abstinence has been a long-standing tradition in many societies of tropical Africa, yet recent research suggests an erosion of the taboo on post-partum sexual relations as a means of fertility control. The current study among women in the lower income groups in Kinshasa, Zaire, provides evidence of this. There is strong motivation toward child-spacing, as shown by 80 per cent of the women who reported to be currently practising some means of fertility control: 73 per cent with traditional methods, only 7 per cent with modern contraceptives. There appears to be some carry-over of traditional practice, in that abstinence is related to the age and nursing status of the last born child. However, the most widely practised method is withdrawal. This suggests a desire on the part of this population for alternatives to abstinence, an issue with important implications for future family planning programs in Zaire. 相似文献
275.
276.
One indirect (PSQ) and two direct (CSQ-18B and ERS) measures of patient satisfaction were compared across a series of psychometric, acceptability, and concurrent validity criteria. None of the three measures was significantly related to health status or demographic characteristics. Each measure performed as expected from prior research on their psychometric properties. The scales contrasted, however, in regard to acceptability, with the PSQ being much less acceptable to patients than the other two. The PSQ also produced more missing data. The results on the PSQ reflected patient inconsistency on cross-check items and patients tended to be uncertain in their responses to many items. In multivariate analyses the three measures were used as predictors of patient-rated indices of global service satisfaction. The CSQ-18B and the ERS were significant predictors of patient-rated indices of global service satisfaction, whereas the PSQ was unrelated to these indices. It was concluded that the direct and indirect approaches measure different satisfaction domains. The PSQ likely assesses more generalized attitudes about health services while the CSQ-18B and the ERS efficiently reflect opinions about the specific setting in which they are administered. 相似文献
277.
Population-to-practitioner ratios have long been the primary index in the designation of health manpower shortage areas. This paper documents that application of the widely used population-to-dentist index results in understatement of the need for dental health manpower in rural areas. Through the analysis of utilization data collected from a statewide health screening program in Colorado, the practice of sole reliance on the population-to-dentist indices as an indicator of need was tested. Another measure, the area-(square miles) to-dentist ratio was formulated, examined, and found to be a more useful referent of the need for additional health manpower in rural areas. Utilization of dental services in sparsely settled rural counties of Colorado was unrelated to population-to-dentist ratios. A strong, statistically significant association of utilization with land area-to-dentist ratios was found. The findings of this analysis suggest a need for reevaluation of needs assessment methodologies used in the designation of health manpower shortage areas. Indices more sensitive to consumer circumstance than to the number of health care providers available must be considered. 相似文献
278.
Delia EP 《International migration (Geneva, Switzerland)》1982,20(1-2):11-25
The author evaluates studies by Huw R. Jones and Russell King concerning the determinants of emigration from Malta and tests a new set of migration functions using cross-sectional and time-series data for the inter-censal years 1957 to 1967. Jones and King concluded that emigration was influenced more by socio-demographic factors than by economic forces. In the present article, the author concludes that economic factors did influence the decision to migrate from Malta. The policy implications of these findings are also considered. (summary in FRE, SPA) 相似文献
279.
280.
Ross CE Duff RS 《Social forces; a scientific medium of social study and interpretation》1982,61(2):456-474
We examine the effect of medical care and living conditions on children's physical and psychological well-being. We develop a causal model in which living conditions (including the socioeconomic status of the family and the social-psychological aspects of family functioning) may affect well-being both directly, and indirectly through medical care. We find that families in the higher social classes and families that function well tend to go to large prepaid groups where they receive good medical care. High quality technical care of illness, in turn, improves physical health. The quality of psychotherapeutic care, on the other hand, has no effect on psychological well-being. For this aspect of health, the effect of living conditions is largely direct, rather than indirect by way of medical care. Families characterized by high levels of functioning have children who are psychologically healthy. In addition, physical health affects psychological well-being, but not vice versa. 相似文献