全文获取类型
收费全文 | 16668篇 |
免费 | 340篇 |
国内免费 | 5篇 |
专业分类
管理学 | 2403篇 |
民族学 | 115篇 |
人才学 | 12篇 |
人口学 | 1419篇 |
丛书文集 | 114篇 |
理论方法论 | 1785篇 |
综合类 | 272篇 |
社会学 | 8554篇 |
统计学 | 2339篇 |
出版年
2023年 | 83篇 |
2021年 | 92篇 |
2020年 | 257篇 |
2019年 | 400篇 |
2018年 | 443篇 |
2017年 | 561篇 |
2016年 | 450篇 |
2015年 | 329篇 |
2014年 | 406篇 |
2013年 | 2667篇 |
2012年 | 556篇 |
2011年 | 558篇 |
2010年 | 447篇 |
2009年 | 402篇 |
2008年 | 427篇 |
2007年 | 495篇 |
2006年 | 446篇 |
2005年 | 478篇 |
2004年 | 426篇 |
2003年 | 337篇 |
2002年 | 376篇 |
2001年 | 383篇 |
2000年 | 375篇 |
1999年 | 323篇 |
1998年 | 271篇 |
1997年 | 249篇 |
1996年 | 244篇 |
1995年 | 219篇 |
1994年 | 248篇 |
1993年 | 235篇 |
1992年 | 239篇 |
1991年 | 207篇 |
1990年 | 202篇 |
1989年 | 200篇 |
1988年 | 197篇 |
1987年 | 198篇 |
1986年 | 160篇 |
1985年 | 202篇 |
1984年 | 216篇 |
1983年 | 191篇 |
1982年 | 175篇 |
1981年 | 137篇 |
1980年 | 157篇 |
1979年 | 156篇 |
1978年 | 132篇 |
1977年 | 115篇 |
1976年 | 133篇 |
1975年 | 125篇 |
1974年 | 124篇 |
1973年 | 89篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
The authors explored predictions of general job satisfaction at early and middle adulthood and uncovered several findings about developmental processes associated with job satisfaction. Tests of life‐span career theory propositions revealed that neither choice‐job congruence nor gender added significantly to predictions of job satisfaction at 2 career stages. Earlier occupational choice and current job added to predictions of midcareer (modal age 43 years) job satisfaction, especially for men. The predictability of job satisfaction is apparently influenced by the career stage when satisfaction is appraised. 相似文献
102.
In this note, we consider the problem of estimating regression coefficients when there are missing observations of some explanatory variables. Following Dagenais (1973), Gourieroux and Monfort (1981), and Conniffe (1983a, 1983b), we assume auxiliary relationships exist among explanatory varibles. Several estimatprs and their interrelationships are discussed. We begin with the model of Gourieroux and
Monfort (1981) 相似文献
Monfort (1981) 相似文献
103.
Don A. Dillman Tommy L. Brown John E. Carlson Edwin H. Carpenter Frederick O. Lorenz Robert Mason John Saltiel Roberta L. Songster 《Rural sociology》1995,60(4):674-687
Abstract Past research suggests that mail surveys encourage a primacy effect, which is a tendency to choose the first answers from a list, whereas telephone surveys encourage a recency effect, a tendency to choose the last answers from a list. This paper summarizes results from 82 new experiments conducted in 12 separate surveys in seven states. Only four of 33 mail survey comparisons exhibited significant primacy effects, while five of 26 experiments in telephone surveys exhibited recency effects. In addition, only three of 23 cross-method comparisons produced a significant primacy/recency effect in the expected manner. The conclusion is that the prevalence of primacy and recency effects has been over-estimated by past research and a new theoretical approach that takes into account multiple causation is needed for examining these effects. 相似文献
104.
Surprisingly little research has sought to explain differential participation after recruitment into social movement organizations (SMOs). This study examines the influence of several sets of predictors on participation by members of a national organization in the antihunger movement. The findings highlight the importance of incentive, ideological, and microstructural factors for differential participation and suggest that favorable perceptions of SMOs also promote participation. Final remarks address the implications of the findings for the social movement and voluntary organization literatures. 相似文献
105.
106.
Abstract The objective of this study is to examine female labor force participation and its determinants in rural and urban China. The sociological literature has demonstrated that participation tends to increase in urban and industrialized places where women have higher levels of education and fewer children, where more workers are engaged in service pursuits, and where family structure is less traditional. With the use of data on counties and cities (N = 2,377) from the I-percent sample of the 1982 census of the People's Republic of China, it was found that female labor force participation is likely to rise in areas with increased agricultural employment, educational levels, proportion of female-headed households, and higher male-to-female sex ratios. Both the size of the service sector and the fertility rate had negligible effects on female labor force participation. Although, on average, rural places have slightly higher levels of female labor force participation, when other variables are controlled, urban places have a higher rate of female participation. In addition, the findings suggest that market factors (i.e., education) are more likely to determine the rate of female labor force participation in urban areas; whereas demographic and social factors (i.e., sex ratio and household structure) play a more important role in explaining the female labor force participation in rural counties. 相似文献
107.
108.
Tree health is a critical parameter for evaluating urban ecosystem health and sustainability. Traditionally, this parameter
has been derived from field surveys. We used multispectral remote sensing data and GIS techniques to determine tree health
at the University of California, Davis. The study area (363 ha) contained 8,962 trees of 215 species. Tree health conditions
were mapped for each physiognomic type at two scales: pixel and whole tree. At the pixel scale, each tree pixel within the
tree crown was classified as either healthy or unhealthy based on vegetation index values. At the whole tree scale, raster
based statistical analysis was used to calculate tree health index which is the ratio of healthy pixels to entire tree pixels
within the tree crown. The tree was classified as healthy if the index was greater than 70%. Accuracy was checked against
a random sample of 1,186 trees. At the whole tree level, 86% of campus trees were classified as healthy with 88% mapping accuracy.
At the pixel level, 86% of the campus tree cover was classified as healthy. This tree health evaluation approach allows managers
to identify the location of unhealthy trees for further diagnosis and treatment. It can be used to track the spread of disease
and monitor seasonal or annual changes in tree health. Also, it provides tree health information that is fundamental to modeling
and analysis of the environmental, social, and economic services produced by urban forests. 相似文献
109.
Anthony E. Ladd 《Sociological inquiry》1991,61(3):299-313
Despite sociopolitical controversy surrounding the solid waste crisis, little sociological attention has focused on this crucial environmental issue. Drawing on research from the technological controversies, environmental concern, and solid waste literatures, this study examines the pre-implementation anxieties of a Louisiana community faced with a proposal to build an incinerator in its backyard. Utilizing survey data, a causal path model is developed in which the perceived advantages of the technology, general environmental concern, and support for recycling initiatives are identified as explanatory variables of incinerator opposition. Implications of these findings for the study of technical controversies and the larger solid waste crisis also are suggested. 相似文献
110.