全文获取类型
收费全文 | 12106篇 |
免费 | 221篇 |
专业分类
管理学 | 1757篇 |
民族学 | 58篇 |
人才学 | 1篇 |
人口学 | 1239篇 |
丛书文集 | 65篇 |
教育普及 | 1篇 |
理论方法论 | 1075篇 |
现状及发展 | 1篇 |
综合类 | 148篇 |
社会学 | 5728篇 |
统计学 | 2254篇 |
出版年
2023年 | 85篇 |
2021年 | 65篇 |
2020年 | 179篇 |
2019年 | 247篇 |
2018年 | 292篇 |
2017年 | 401篇 |
2016年 | 318篇 |
2015年 | 203篇 |
2014年 | 265篇 |
2013年 | 2038篇 |
2012年 | 421篇 |
2011年 | 350篇 |
2010年 | 286篇 |
2009年 | 271篇 |
2008年 | 312篇 |
2007年 | 303篇 |
2006年 | 277篇 |
2005年 | 277篇 |
2004年 | 278篇 |
2003年 | 242篇 |
2002年 | 269篇 |
2001年 | 300篇 |
2000年 | 301篇 |
1999年 | 276篇 |
1998年 | 192篇 |
1997年 | 180篇 |
1996年 | 174篇 |
1995年 | 167篇 |
1994年 | 138篇 |
1993年 | 159篇 |
1992年 | 176篇 |
1991年 | 153篇 |
1990年 | 166篇 |
1989年 | 183篇 |
1988年 | 153篇 |
1987年 | 142篇 |
1986年 | 151篇 |
1985年 | 172篇 |
1984年 | 169篇 |
1983年 | 158篇 |
1982年 | 130篇 |
1981年 | 108篇 |
1980年 | 106篇 |
1979年 | 139篇 |
1978年 | 94篇 |
1977年 | 91篇 |
1976年 | 90篇 |
1975年 | 82篇 |
1974年 | 83篇 |
1973年 | 75篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
201.
In an experiment, thirty-six professional insurance men employed the utility method, the worry method, and the comparison method in two insurance problems to determine the appropriate insurance coverage. It was found that the best act with the utility method almost always was no insurance, whereas the best act with the other two methods tended to be complete insurance. The utility method best act rarely agreed with the subject's actual preferred act, while the comparison method best act usually was the same or almost the same as the actual preferred act. While the worry method suggests that the subjects typically are risk averse, the utility functions obtained tend to show that the subjects typically are not risk averse. 相似文献
202.
203.
The present empirical study applies the methodology of information theory to the problem of assessing and separating capital market risk, which is separated into its systematic and unsystematic components. Monthly return relatives for all securities traded on the New York Stock Exchange are examined for the period 1926 to 1971, which is segmented into six 7-year subperiods. The securities are combined into portfolios of various sizes and ranked. It is concluded that although both systematic and unsystematic risks have increased over the 45-year interval—particularly between the pre-1940 and post-1940 periods—they have maintained their relative share of the total risk over the same period. 相似文献
204.
This paper examines recent changes in weekly income levels and dispersion for Māori, New Zealand’s indigenous ethnic group.
Changes in the Māori income distribution between 1997 and 2003 reflect rapid increases in economic growth and employment rate.
A reduced proportion of people had zero or benefit-level incomes and a higher proportion had high incomes. Income inequality
declined for working-aged Māori and was stable for employed Māori. The average income gap between Māori and Europeans declined.
The increased Māori employment rate during this period was the single most important driver of changes in the Māori income
distribution.
相似文献
David C. Maré (Corresponding author)Email: |
205.
New Environmental Theories: Toward a Coherent Theory of Environmentally Significant Behavior 总被引:6,自引:0,他引:6
Paul C. Stern 《The Journal of social issues》2000,56(3):407-424
This article develops a conceptual framework for advancing theories of environmentally significant individual behavior and reports on the attempts of the author's research group and others to develop such a theory. It discusses definitions of environmentally significant behavior; classifies the behaviors and their causes; assesses theories of environmentalism, focusingespecially on value-belief-norm theory; evaluates the relationship between environmental concern and behavior; and summarizes evidence on the factors that determine environmentally significant behaviors and that can effectively alter them. The article concludes by presenting some major propositions supported by available research and some principles for guiding future research and informing the design of behavioral programs for environmental protection. 相似文献
206.
Design of generalized CSP-C continuous sampling plan 总被引:1,自引:1,他引:0
In this paper, the concept acceptance number has been incorporated to the single level continuous sampling plan CSP-1. The advantage of the proposed plan, designated as the CSP-C plan, is to achieve a reduction in the average fraction inspected at good quality levels. Nomographs for the design of the proposed plan are presented. The expressions of the performance measures for this new plan such as OC, AOQ and AFI are also provided. 相似文献
207.
In this paper, we consider a Bayesian analysis of the unbalanced (general) growth curve model with AR(1) autoregressive dependence, while applying the Box-Cox power transformations. We propose exact, simple and Markov chain Monte Carlo approximate parameter estimation and prediction of future values. Numerical results are illustrated with real and simulated data. 相似文献
208.
209.
A definition of reproducibility in Guttman Scaling and two chance measures of reproducibility are suggested. The first measure assumes that the items are independent. The second method assumes nonindependent items and fits respondent and item margins by an iterative method used in fitting log-linear models. Chance reproducibility is conceptualized in terms of assumptions about respondent variability. 相似文献
210.
The distinction between structure and process in occupational mobility has been a dominant theme in contemporary research. While successive attempts to “solve” the structure/process dilemma have typically focused on new methodological procedures, we emphasize the conceptual issues underlying the distinction as a basis for further analysis. We introduce a simple two-stage model for the specification of mobility structure and process and use this model to evaluate current methodological “solutions” to the analysis of mobility. 相似文献