全文获取类型
收费全文 | 2569篇 |
免费 | 145篇 |
国内免费 | 2篇 |
专业分类
管理学 | 319篇 |
劳动科学 | 4篇 |
民族学 | 29篇 |
人才学 | 1篇 |
人口学 | 233篇 |
丛书文集 | 143篇 |
理论方法论 | 320篇 |
综合类 | 228篇 |
社会学 | 1074篇 |
统计学 | 365篇 |
出版年
2024年 | 4篇 |
2023年 | 28篇 |
2022年 | 19篇 |
2021年 | 40篇 |
2020年 | 85篇 |
2019年 | 106篇 |
2018年 | 97篇 |
2017年 | 127篇 |
2016年 | 127篇 |
2015年 | 94篇 |
2014年 | 86篇 |
2013年 | 357篇 |
2012年 | 131篇 |
2011年 | 137篇 |
2010年 | 124篇 |
2009年 | 109篇 |
2008年 | 94篇 |
2007年 | 100篇 |
2006年 | 105篇 |
2005年 | 91篇 |
2004年 | 77篇 |
2003年 | 62篇 |
2002年 | 57篇 |
2001年 | 42篇 |
2000年 | 35篇 |
1999年 | 33篇 |
1998年 | 28篇 |
1997年 | 27篇 |
1996年 | 21篇 |
1995年 | 24篇 |
1994年 | 36篇 |
1993年 | 26篇 |
1992年 | 26篇 |
1991年 | 16篇 |
1990年 | 14篇 |
1989年 | 12篇 |
1988年 | 11篇 |
1987年 | 5篇 |
1986年 | 8篇 |
1985年 | 12篇 |
1984年 | 5篇 |
1983年 | 7篇 |
1982年 | 6篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1979年 | 10篇 |
1978年 | 5篇 |
1976年 | 8篇 |
1974年 | 4篇 |
1971年 | 4篇 |
排序方式: 共有2716条查询结果,搜索用时 625 毫秒
131.
132.
There are now three essentially separate literatures on the topics of multiple systems estimation, record linkage, and missing
data. But in practice the three are intimately intertwined. For example, record linkage involving multiple data sources for
human populations is often carried out with the expressed goal of developing a merged database for multiple system estimation
(MSE). Similarly, one way to view both the record linkage and MSE problems is as ones involving the estimation of missing
data. This presentation highlights the technical nature of these interrelationships and provides a preliminary effort at their
integration. 相似文献
133.
In this article, we extended the empirical distribution function based test statistic Ik of Skaug and Tjostheim [1993. Nonparametric test of serial independence based on the empirical distribution function. Biometrika 80, 591–602] in the time series setting to Dn for spatial lattice data and derived the asymptotic distribution of the proposed test statistic Dn under the null hypothesis of spatial independence. The size and power of the proposed test statistic under conditional autoregressive model (CAR) were simulated. We applied Dn, Moran's I and Geary's c to the transformed and well-studied sudden infant death syndrome data from North Carolina and found that Dn produced a much smaller p-value in testing spatial independence. 相似文献
134.
135.
136.
137.
Daniel Goodkind 《Demography》2017,54(4):1375-1400
China launched an unprecedented program to control its population in 1971. Experts have dismissed the official estimate of 400 million births averted by this program as greatly exaggerated yet neglect to provide their own estimates. Counterfactual projections based on fertility declines in other countries suggest that China’s program-averted population numbered 360–520 million as of 2015. The low end of this range is based on Vietnam—China’s best national comparator, with a two-child program of its own—and the high end is based on a 16-country comparator selected, ironically, by critics of the official estimate. The latter comparator further implies that China’s one-child program itself averted a population of 400 million by 2015, three-quarters of the total averted population. All such estimates are projected to double by 2060, due mostly to counterfactual population momentum. These and other findings presented herein affirm the astonishing impact of China’s draconian policy choices and challenge the current consensus that rapid socioeconomic progress drove China’s fertility well below two children per family. International comparisons of fertility and income suggest instead that China’s very low fertility arrived two or three decades too soon. If China had not harshly enforced a norm of 1.5-children during the last quarter century, most mothers would have had two children, one-half birth higher than observed. 相似文献
138.
139.
We investigate the relationship between economic freedom and international migration for the 1980–2010 period using a dataset on migration from 91 emerging countries to the 20 most attractive OECD destination countries. We find that more economic freedom at home discourages high-skilled migration, but not low-skilled migration. The negative association between economic freedom and high-skilled emigration also holds when we estimate (dynamic) panel models that allow for endogeneity in the economic freedom-migration nexus. In sum, our findings suggest that high-skilled migration is especially responsive to the economic incentives resulting from economic freedom. 相似文献
140.
Huei-ling Lai 《Asian Ethnicity》2017,18(3):406-423
This study investigates how the ethnic visibility of Taiwan Hakka is improved through language use. The usage of a unique Hakka symbolic code <nganggiang stiff neck> is focused on. Based on data from the four Taiwan major newspapers, an analysis with text techniques shows that the code emerges along with social-political developments in Taiwan, with its meaning turning from negative to positive connotation. Its frequency is highly correlated with major political events in Taiwan, with peaks during the two or three years before presidential elections. It illustrates semiotic innovation, extending from Hakka to Hakka non-human, to non-Hakka, and to non-Hakka non-human frames. The salient image it creates increases Hakka ethnic visibility and enhances their ethnic identity. A significant implication is that minority ethnic groups can employ a unique symbolic code, empowering it with positive connotation. Through extensive language use, its representation can raise their ethnic visibility and enhance their ethnic identity. 相似文献