全文获取类型
收费全文 | 16518篇 |
免费 | 445篇 |
国内免费 | 2篇 |
专业分类
管理学 | 2300篇 |
民族学 | 84篇 |
人才学 | 11篇 |
人口学 | 1515篇 |
丛书文集 | 90篇 |
理论方法论 | 1665篇 |
综合类 | 285篇 |
社会学 | 8175篇 |
统计学 | 2840篇 |
出版年
2021年 | 93篇 |
2020年 | 238篇 |
2019年 | 362篇 |
2018年 | 389篇 |
2017年 | 574篇 |
2016年 | 391篇 |
2015年 | 291篇 |
2014年 | 368篇 |
2013年 | 2730篇 |
2012年 | 550篇 |
2011年 | 498篇 |
2010年 | 398篇 |
2009年 | 383篇 |
2008年 | 385篇 |
2007年 | 438篇 |
2006年 | 404篇 |
2005年 | 403篇 |
2004年 | 372篇 |
2003年 | 280篇 |
2002年 | 348篇 |
2001年 | 417篇 |
2000年 | 344篇 |
1999年 | 338篇 |
1998年 | 276篇 |
1997年 | 267篇 |
1996年 | 232篇 |
1995年 | 229篇 |
1994年 | 249篇 |
1993年 | 238篇 |
1992年 | 245篇 |
1991年 | 226篇 |
1990年 | 240篇 |
1989年 | 225篇 |
1988年 | 228篇 |
1987年 | 232篇 |
1986年 | 194篇 |
1985年 | 231篇 |
1984年 | 221篇 |
1983年 | 214篇 |
1982年 | 186篇 |
1981年 | 157篇 |
1980年 | 167篇 |
1979年 | 191篇 |
1978年 | 166篇 |
1977年 | 142篇 |
1976年 | 147篇 |
1975年 | 166篇 |
1974年 | 131篇 |
1973年 | 106篇 |
1972年 | 84篇 |
排序方式: 共有10000条查询结果,搜索用时 359 毫秒
91.
E. Chiapello 《Sociologie du Travail》2005,47(3):362
In 2002, the European Union changed direction from its past efforts to harmonise European accounting systems and turned instead to a subcontractor, requiring listed European companies to adopt accounting standards drawn up by a private London-based organisation, the IASB (International Accounting Standards Board), which had until then had no public mandate. This decision was all the more significant because the EU has no institutional means of control over the IASB, although it was the first geographical group to decide to impose these standards on its businesses. IASB standards are rooted in the “anglo-saxon” tradition of standardisation for the financial markets, and the view of the enterprise they promote diverges from the accounting traditions of continental European capitalism. This article shows how the new standards are transforming the concept of enterprise, and examines the span of factors that brought about what is a major institutional change for European capitalism. — Special issue: New patterns of institutions. 相似文献
92.
Chandan Saha Michael P. Jones 《Journal of the Royal Statistical Society. Series B, Statistical methodology》2005,67(1):167-182
Summary. In longitudinal studies, missingness of data is often an unavoidable problem. Estimators from the linear mixed effects model assume that missing data are missing at random. However, estimators are biased when this assumption is not met. In the paper, theoretical results for the asymptotic bias are established under non-ignorable drop-out, drop-in and other missing data patterns. The asymptotic bias is large when the drop-out subjects have only one or no observation, especially for slope-related parameters of the linear mixed effects model. In the drop-in case, intercept-related parameter estimators show substantial asymptotic bias when subjects enter late in the study. Eight other missing data patterns are considered and these produce asymptotic biases of a variety of magnitudes. 相似文献
93.
94.
95.
Many proposed methods for analyzing clustered ordinal data focus on the regression model and consider the association structure within a cluster as a nuisance. However, the association structure is often of equal interest—for example, temporal association in longitudinal studies and association between responses to similar questions in a survey. We discuss the use, appropriateness, and interpretability of various latent variable and Markov models for the association structure and propose a new structure that exploits the ordinality of the response. The models are illustrated with a study concerning opinions regarding government spending and an analysis of stability and change in teenage marijuana use over time, where we reveal different behavioral patterns for boys and girls through a comprehensive investigation of individual response profiles. 相似文献
96.
Martin F. Manalansan 《The International migration review》2006,40(1):224-249
This essay examines the historical and theoretical development of sexuality in migration research. Noting gaps and omissions in the literature, the essay proposes a dual notion of sexuality including one that is produced by the intersection of other social identities such as class and race, and a queer studies‐derived idea of the sexual that goes against the normalizing of heterosexual institutions and practices. Utilizing a case study of Filipina migrant workers, the essay demonstrates the pivotal role of sexuality in the future of gender and migration research through a critique of the implicit normative assumptions around family, heterosexual reproduction, and marriage that abound in this body of literature, and how a critical notion of sexuality enables a more inclusive and accurate portrait of global gendered migration. 相似文献
97.
Rex Forehand Deborah J. Jones Gene H. Brody Lisa Armistead 《Journal of marriage and the family》2002,64(4):1012-1023
This study examined the unique and interactive roles of mother and teacher depressive symptoms in child adjustment in 277 African American single mother‐headed families, as well as whether the associations differed depending on the age and gender of the child. Findings revealed a significant association between maternal depressive symptoms and child depressive symptoms in girls, but not boys. Moreover, the combination of higher levels of both mother and teacher depressive symptoms was associated with the highest level of child depressive symptoms and, for younger children, externalizing symptoms. The importance of considering the multiple social contexts in which children interact is discussed. 相似文献
98.
Rainfall interception by Santa Monica's municipal urban forest 总被引:4,自引:2,他引:2
Effects of urban forests on rainfall interception and runoff reduction have been conceptualized, but not well quantified. In this study rainfall interception by street and park trees in Santa Monica, California is simulated. A mass and energy balance rainfall interception model is used to simulate rainfall interception processes (e.g., gross precipitation, free throughfall, canopy drip, stemflow, and evaporation). Annual rainfall interception by the 29,299 street and park trees was 193,168 m3 (6.6 m3/tree), or 1.6% of total precipitation. The annual value of avoided stormwater treatment and flood control costs associated with reduced runoff was $110,890 ($3.60/tree). Interception rate varied with tree species and sizes. Rainfall interception ranged from 15.3% (0.8 m3/tree) for a small Jacaranda mimosifolia (3.5 cm diameter at breast height) to 66.5% (20.8 m3/tree) for a mature Tristania conferta (38.1 cm). In a 25-year storm, interception by all street and park trees was 12,139.5 m3 (0.4%), each tree yielding $0.60 (0.4 m3/tree) in avoided flood control costs. Rainfall interception varied seasonally, averaging 14.8% during a 21.7 mm winter storm and 79.5% during a 20.3 mm summer storm for a large, deciduous Platanus acerifolia tree. Effects of differences in temporal precipitation patterns, tree population traits, and pruning practices on interception in Santa Monica, Modesto, and Sacramento, California are described. 相似文献
99.
Janet F. Werker Christopher T. Fennell Kathleen M. Corcoran Christine L. Stager 《Infancy》2002,3(1):1-30
What do novice word learners know about the sound of words? Word‐learning tasks suggest that young infants (14 months old) confuse similar‐sounding words, whereas mispronunciation detection tasks suggest that slightly older infants (18–24 months old) correctly distinguish similar words. Here we explore whether the difficulty at 14 months stems from infants' novice status as word learners or whether it is inherent in the task demands of learning new words. Results from 3 experiments support a developmental explanation. In Experiment 1, infants of 20 months learned to pair 2 phonetically similar words to 2 different objects under precisely the same conditions that infants of 14 months (Experiment 2) failed. In Experiment 3, infants of 17 months showed intermediate, but still successful, performance in the task. Vocabulary size predicted word‐learning performance, but only in the younger, less experienced word learners. The implications of these results for theories of word learning and lexical representation are discussed. 相似文献
100.