全文获取类型
收费全文 | 23498篇 |
免费 | 410篇 |
专业分类
管理学 | 3214篇 |
民族学 | 165篇 |
人口学 | 3467篇 |
丛书文集 | 64篇 |
教育普及 | 3篇 |
理论方法论 | 1641篇 |
综合类 | 419篇 |
社会学 | 11397篇 |
统计学 | 3538篇 |
出版年
2023年 | 85篇 |
2022年 | 58篇 |
2021年 | 91篇 |
2020年 | 187篇 |
2019年 | 313篇 |
2018年 | 1987篇 |
2017年 | 2084篇 |
2016年 | 1427篇 |
2015年 | 308篇 |
2014年 | 417篇 |
2013年 | 2761篇 |
2012年 | 734篇 |
2011年 | 1445篇 |
2010年 | 1313篇 |
2009年 | 1016篇 |
2008年 | 1073篇 |
2007年 | 1240篇 |
2006年 | 325篇 |
2005年 | 466篇 |
2004年 | 468篇 |
2003年 | 396篇 |
2002年 | 308篇 |
2001年 | 328篇 |
2000年 | 298篇 |
1999年 | 290篇 |
1998年 | 178篇 |
1997年 | 159篇 |
1996年 | 246篇 |
1995年 | 215篇 |
1994年 | 218篇 |
1993年 | 226篇 |
1992年 | 247篇 |
1991年 | 226篇 |
1990年 | 242篇 |
1989年 | 214篇 |
1988年 | 216篇 |
1987年 | 178篇 |
1986年 | 166篇 |
1985年 | 176篇 |
1984年 | 178篇 |
1983年 | 128篇 |
1982年 | 126篇 |
1981年 | 104篇 |
1980年 | 122篇 |
1979年 | 116篇 |
1978年 | 98篇 |
1977年 | 85篇 |
1976年 | 82篇 |
1975年 | 87篇 |
1974年 | 59篇 |
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
11.
This paper develops a unified model of dual and unitary job holding based on a Stone-Geary utility function. The model incorporates both constrained and unconstrained labor supply. Panel data methods are adapted to accommodate unobserved heterogeneity and multinomial selection into six mutually exclusive labor supply regimes. We estimate the wage and income elasticities arising from selection and unobserved heterogeneity as well as from the Stone-Geary Slutsky equations. The labor supply model is estimated with data from the British Household Panel Survey 1991–2008. Among dual job holders, our study finds that the Stone-Geary income and wage elasticities are much larger for labor supply to the second job compared with the main job. When the effects of selection and unobserved heterogeneity are taken account of, the magnitudes of these elasticities on the second job tend to be significantly reduced. 相似文献
12.
Economic theory establishes that pension privatization weakens the link between old and young and so reduces the incentive to invest in public education in an economy with lower return rate of capital than growth rate of wage. However, empirical studies of the link change are few. In this paper, we investigate the effects of pension privatization and the central government’s subsidy to individual accounts on public education spending in a three-period overlapping generation model. And then, we take contemporary pension reforms in a number of Chinese provinces as offering natural experiment conditions. Using a difference-in-difference framework and 282 municipal districts panel data over years 1998–2009, we test the pension-education theoretical link change. Both our theoretical and empirical results confirm that pension privatization is adversely associated with local public spending on education in China. Private pension subsidies, moreover, magnify this effect. Our study supports the theoretical assertion and selective empirical findings of a negative intergenerational effect of pension privatization. 相似文献
13.
Adrian D. Van Breda 《Journal of youth studies》2015,18(3):322-337
The journey out of care and towards independent living is a challenge for many care-leavers. There has been little research into the social processes involved in this care-leaving journey. This paper presents the results of a grounded theory investigation into the care-leaving journeys of nine young men who had, several years previously, been in the care of Girls & Boys Town in South Africa. Working from a resilience perspective, with an ecological emphasis, four central social processes emerged that together explain the care-leaving experiences of the participants. These processes are striving for authentic belonging; networking people for goal attainment; contextualised responsiveness and building hopeful and tenacious self-confidence. These four processes are located within contextual boundaries and at the social environmental interface. The paper presents these processes in detail, drawing on selected narratives of the participants and integrated with additional theory. It is hoped that this paper may contribute to theory building concerning care-leaving processes and enhance youth care practices for youth in care and leaving care. 相似文献
14.
From the inception of the proportional representation movement it has been an issue whether larger parties are favored at
the expense of smaller parties in one apportionment of seats as compared to another apportionment. A number of methods have
been proposed and are used in countries with a proportional representation system. These apportionment methods exhibit a regularity
of order, as discussed in the present paper, that captures the preferential treatment of larger versus smaller parties. This
order, namely majorization, permits the comparison of seat allocations in two apportionments. For divisor methods, we show
that one method is majorized by another method if and only if their signpost ratios are increasing. This criterion is satisfied
for the divisor methods with power-mean rounding, and for the divisor methods with stationary rounding. Majorization places
the five traditional apportionment methods in the order as they are known to favor larger parties over smaller parties: Adams,
Dean, Hill, Webster, and Jefferson.
Received: 5 August 2000/Accepted: 24 October 2001 相似文献
15.
The authors maintain that the social learning theory of career development and counseling has not been applied to diverse populations. To address this gap in the literature, the authors conducted a qualitative analysis of interviews with 21 middle school students in a low‐income, culturally diverse, inner‐city public school. Four themes emerged, reflecting the influence of discrimination on participants' career learning: contextual barriers and resources for learning, and psychological barriers and resources for learning. The authors provide a conceptual framework for assessing resources and barriers and a rationale for why these aspects often remain hidden or unexamined in career assessment with clients who are vulnerable to discrimination. 相似文献
16.
Existence and Nash implementation of efficient sharing rules for a commonly owned technology 总被引:2,自引:0,他引:2
Suppose that a group of individuals owns collectively a technology which produces a consumption good by means of a (possibly
heterogeneous) input. A sharing rule associates input contributions with a vector of consumptions that are technologically
feasible. We show that the set of allocations obtained by any continuous sharing rule contains Pareto efficient allocations.
We also present a mechanism that implements in Nash equilibrium the Pareto efficient allocations contained in an arbitrary
sharing rule.
Received: 29 June 1998/Accepted: 15 November 2000 相似文献
17.
Susan D. Calkins Susan E. Dedmon Kathryn L. Gill Laura E. Lomax Laura M. Johnson 《Infancy》2002,3(2):175-197
A study sample of 162 six‐month‐old children was selected from a larger sample of 346 infants on the basis of parents' report of their infants' temperament and a laboratory assessment of temperament. Infants were classified as easily frustrated and less easily frustrated and compared on a number of emotion regulation, physiology, and temperament measures. Results indicated that male and female infants were equally likely to be classified as frustrated and less easily frustrated; however, male infants were less able to regulate physiologically. Easily frustrated infants used different emotion regulation strategies and were observed to be less attentive and more active than less easily frustrated infants when observed in the laboratory. These infants were also characterized by their parents as more active, less attentive, and more distressed to novelty. Infants classified as easily frustrated were more reactive physiologically and less able to regulate physiological reactivity than their less easily frustrated counterparts. It is hypothesized that this cluster of characteristics may constitute a unique temperamental type that may have implications for other types of behavioral functioning. Limitations of the study are that observations are based on a single brief assessment of the infant, modest effect sizes were found, and the study is cross‐sectional. 相似文献
18.
Uta Gerhardt 《The American Sociologist》2002,33(2):5-39
This article places an episode in the history of sociological theory into intellectual history in the twentieth century. The
perspective is chronological as well as contextual. The themes are two theoretical approaches, both embedded in both American
and German history, Parsonian Systems Theory and “Frankfurt School” Critical Theory. The chronology shown spanned mainly from
the 1940s to the 1960s. The context of the two theories is a period that is crucial in twentieth century history. The protagonists
of the two approaches were, in the 1940s, Americans and Germans exiled in the United States. In the 1950s, both approaches
were affected by McCarthyism in different ways. The 1960s, however, were the culmination. The dynamics of the two approaches
led into a schism which came into the open on the occasion of the 1964 German Sociology Conference in Heidelberg celebrating
Max Weber. The article shows the stages in the evolution of the schism, emulating three acts in a drama. The final split was
over whether Weber or Marx should be the classic whose oeuvre was to influence sociological thinking today. My aim is to exemplify
how these two authoritative approaches in sociological theory, far from escaping the vagaries and vicissitudes of their times,
were embedded in twentieth-century history. 相似文献
19.
What do voters really know about party platforms and how do they perceive the contents? Are there any relationships between party election platforms and electoral behavior? Despite of much research on parties, there are hardly any answers to these questions. If political parties devise programmes in order to influence political attitudes or electoral behavior, it will be necessary that these programmes are read by people. But it seems to be unclear if and how people do so. This article shows clearly that voters don’t know much about party manifestoes. Still, programmes are more important for voters than many people believe. Programmes are also an important factor for electoral behavior. But there is still a lack of data to get evident results. 相似文献
20.