全文获取类型
收费全文 | 18543篇 |
免费 | 356篇 |
国内免费 | 3篇 |
专业分类
管理学 | 2564篇 |
民族学 | 100篇 |
人才学 | 10篇 |
人口学 | 1556篇 |
丛书文集 | 116篇 |
教育普及 | 2篇 |
理论方法论 | 1894篇 |
综合类 | 386篇 |
社会学 | 9328篇 |
统计学 | 2946篇 |
出版年
2023年 | 95篇 |
2021年 | 110篇 |
2020年 | 298篇 |
2019年 | 377篇 |
2018年 | 423篇 |
2017年 | 547篇 |
2016年 | 470篇 |
2015年 | 360篇 |
2014年 | 399篇 |
2013年 | 2963篇 |
2012年 | 596篇 |
2011年 | 537篇 |
2010年 | 381篇 |
2009年 | 386篇 |
2008年 | 437篇 |
2007年 | 480篇 |
2006年 | 405篇 |
2005年 | 554篇 |
2004年 | 479篇 |
2003年 | 413篇 |
2002年 | 419篇 |
2001年 | 419篇 |
2000年 | 440篇 |
1999年 | 421篇 |
1998年 | 312篇 |
1997年 | 300篇 |
1996年 | 296篇 |
1995年 | 257篇 |
1994年 | 295篇 |
1993年 | 259篇 |
1992年 | 324篇 |
1991年 | 290篇 |
1990年 | 256篇 |
1989年 | 265篇 |
1988年 | 255篇 |
1987年 | 233篇 |
1986年 | 231篇 |
1985年 | 229篇 |
1984年 | 269篇 |
1983年 | 251篇 |
1982年 | 219篇 |
1981年 | 185篇 |
1980年 | 185篇 |
1979年 | 205篇 |
1978年 | 166篇 |
1977年 | 147篇 |
1976年 | 145篇 |
1975年 | 127篇 |
1974年 | 129篇 |
1973年 | 112篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Chris Dockins Robin R Jenkins Nicole Owens Nathalie B Simon Lanelle Bembenek Wiggins 《Risk analysis》2002,22(2):335-346
This article explores two problems analysts face in determining how to estimate values for children's health and safety risk reductions. The first addresses the question: Do willingness‐to‐pay estimates for health risk changes differ across children and adults and, if so, how? To answer this question, the article first examines the potential effects of age and risk preferences on willingness to pay. A summary of the literature reporting empirical evidence of differences between willingness to pay for adult health and safety risk reductions and willingness to pay for health and safety risk reductions in children is also provided. The second dimension of the problem is a more fundamental issue: Whose perspective is relevant when valuing children's health effects—society's, children's, adults‐as‐children, or parents'? Each perspective is considered, followed ultimately by the conclusion that adopting a parental perspective through an intrahousehold allocation model seems closest to meeting the needs of the estimation problem at hand. A policy example in which the choice of perspective affects the outcome of a regulatory benefit‐cost analysis rounds out the article and emphasizes the importance of perspective. 相似文献
62.
63.
College students (20 women, 14 men) seeking career counseling services at a university career center participated in this exploratory investigation. A 2 (DISCOVER treatment) × 2 (counseling treatment) research design was used to evaluate the individual and combined effects of DISCOVER (ACT, 1998) and counseling on participants' career decision‐making self‐efficacy and career decision‐making attributional style. Findings revealed a significant effect of the use of DISCOVER on participants' career decision‐making self‐efficacy and their sense of control over the career decision‐making process. Results are discussed regarding the implications for career counseling and ideas for further research in this domain. 相似文献
64.
We discuss the issue of using benchmark doses for quantifying (excess) risk associated with exposure to environmental hazards. The paradigm of low-dose risk estimation in dose-response modeling is used as the primary application scenario. Emphasis is placed on making simultaneous inferences on benchmark doses when data are in the form of proportions, although the concepts translate easily to other forms of outcome data. 相似文献
65.
66.
I. M. Endresen B. Ellertsen C. Endresen A. M. Hjelmen R. Matre H. Ursin 《Work and stress》1991,5(3):217-227
This study concerned the immunological correlates of stress and work. Self reported stress, emotional state, ego-strength, and defensiveness were examined in relation to measures of cellular immunity (T-cell response to Con A and number of T4 and T8 cells) and humoral immunity (concentrations of immunoglobulins and complement components in plasma) in a group of 96 Norwegian female bank employees. The analyses showed that workload, the stress factor with the highest group mean, was associated with number of T-cells, while strain due to body posture during work was related to concentrations of IgM and C3. Further, depression was significantly correlated with IgM concentration and T-cell number, and anxiety with C3 concentration. T-cell activity was the immunological parameter most consistently associated with psychological well-being, showing positive correlations with defensiveness and ego-strength and negative correlations with anxiety and depression. In conclusion, T-cell number and concentrations of IgM and C3 were sensitive to both work-related stress experience and emotional distress. Coping abilities, indicated by the MMPI Ego-strength scale and emotional distress, were reflected in T-cell activity; insufficient coping was associated with low T-cell activity. 相似文献
67.
Many studies have shown that multinational firms pay more than domestic firms in Third World countries. Economists who criticize
sweatshops have responded that multinational firms’ wage data do not address whether sweatshop jobs are above average because
many of these jobs are with domestic subcontractors. We compare apparel industry wages and the wages of individual firms accused
of being sweatshops to measures of the standard of living in Third World economies. We find that most sweatshop jobs provide
their workers an above average standard of living.
The authors thank Jeffery Hummel, Charles Murray, Larry Pratt, and Edward Stringham for helpful comments on earlier drafts.
Financial support from the American Institute for Economic Research is gratefully acknowledged. The usual disclaimer applies. 相似文献
68.
Sara R. Curran Steven Shafer Katharine M. Donato Filiz Garip 《The International migration review》2006,40(1):199-223
A review of the sociological research about gender and migration shows the substantial ways in which gender fundamentally organizes the social relations and structures influencing the causes and consequences of migration. Yet, although a significant sociological research has emerged on gender and migration in the last three decades, studies are not evenly distributed across the discipline. In this article, we map the recent intellectual history of gender and migration in the field of sociology and then systematically assess the extent to which studies on engendering migration have appeared in four widely read journals of sociology (American Journal of Sociology, American Sociological Review, Demography, and Social Forces). We follow with a discussion of these studies, and in our conclusions, we consider how future gender and migration scholarship in sociology might evolve more equitably. 相似文献
69.
David A. Cotter 《Rural sociology》2002,67(4):534-555
Abstract Accounts of poverty generally fall into either “individualist” or “structuralist” camps. Often these are seen as irreconcilable and incompatible competing perspectives. This paper integrates individualist and structuralist accounts of poverty by examining the relationship between “person poverty” and “place poverty” in nonmetropolitan and metropolitan labor markets, using a multilevel framework. I fashion a general model of poverty production and allocation, drawing on the labor market ecology perspective. After a discussion of this perspective, I develop a multilevel framework for analyzing data from the 1990 Census PUMS‐L sample, STF‐3c, and other sources to show how compositional and contextual factors affect households' likelihoods of being in poverty. These multilevel models also allow us to estimate the degree to which labor market conditions influence the magnitude of household labor supply characteristics. Results suggest that both compositional and contextual factors contribute to the metro‐nonmetro difference in poverty rates, and that the effects of employment vary in accordance with labor market characteristics. 相似文献
70.
Buying a Dream: Alternative Models of Demand for Lotto 总被引:5,自引:0,他引:5
Existing lotto demand models utilize effective price, computed as the face value of a ticket minus the expected value of prize money per ticket, as their primary explanatory variable. By contrast, this article proposes a key role for consumption benefit or "fun" in the demand for gambling in general and lotto demand in particular. It develops an alternative model of lotto demand that focuses on the maximum possible prize. When this is tested against the traditional model using data from the U.K. National Lottery, we find that jackpot considerations exert an influence over and above that of variations in effective price. 相似文献