全文获取类型
收费全文 | 35515篇 |
免费 | 525篇 |
国内免费 | 16篇 |
专业分类
财政金融 | 5446篇 |
工业经济 | 1971篇 |
计划管理 | 6148篇 |
经济学 | 7685篇 |
综合类 | 2075篇 |
运输经济 | 175篇 |
旅游经济 | 202篇 |
贸易经济 | 6682篇 |
农业经济 | 1051篇 |
经济概况 | 3960篇 |
信息产业经济 | 44篇 |
邮电经济 | 617篇 |
出版年
2023年 | 172篇 |
2022年 | 307篇 |
2021年 | 463篇 |
2020年 | 488篇 |
2019年 | 343篇 |
2018年 | 2600篇 |
2017年 | 2524篇 |
2016年 | 1617篇 |
2015年 | 536篇 |
2014年 | 725篇 |
2013年 | 1310篇 |
2012年 | 1725篇 |
2011年 | 3828篇 |
2010年 | 3522篇 |
2009年 | 2697篇 |
2008年 | 2753篇 |
2007年 | 2996篇 |
2006年 | 1436篇 |
2005年 | 1507篇 |
2004年 | 839篇 |
2003年 | 935篇 |
2002年 | 628篇 |
2001年 | 359篇 |
2000年 | 216篇 |
1999年 | 161篇 |
1998年 | 129篇 |
1997年 | 77篇 |
1996年 | 84篇 |
1995年 | 63篇 |
1994年 | 71篇 |
1993年 | 50篇 |
1992年 | 64篇 |
1991年 | 53篇 |
1990年 | 31篇 |
1989年 | 44篇 |
1988年 | 29篇 |
1987年 | 23篇 |
1986年 | 42篇 |
1985年 | 63篇 |
1984年 | 65篇 |
1983年 | 44篇 |
1982年 | 41篇 |
1981年 | 32篇 |
1980年 | 36篇 |
1979年 | 44篇 |
1978年 | 39篇 |
1977年 | 34篇 |
1976年 | 28篇 |
1975年 | 29篇 |
1974年 | 34篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
901.
Voter participation rates vary widely across the 50 states. We seek to identify a source of this interstate variation, focusing upon the 2000, 2004, 2008, and 2012 general elections. Of note is that the latter two general elections featured a minority (i.e., African-American) nominee for president from one of the major political parties. Within the context of the rational voter model, we hypothesize that the presence of a minority candidate atop the ticket will boost minorities’ expected net benefits from voting, with the result that minority voter participation will be higher. Based on cross-sectional fixed-effects estimations, we find that states’ voter participation rates were unaffected by the percent of the population that was either African-American or Hispanic for the 2000 and 2004 election cycles, while states’ voter participation rates were positively related to the percent of the population that was either African-American or Hispanic for the 2008 and 2012 election cycles. 相似文献
902.
Optimal Exchange-Rate Policy in a Model of Local-Currency Pricing with Vertical Production and Trade
In this paper, we examine optimal exchange-rate flexibility in a model of local-currency pricing with vertical production and trade. Following a large body of empirical evidence, we assume that final-goods prices are sticky, but intermediate-goods prices are flexible. We find that, unlike what is found in the literature, optimal nominal exchange rate is flexible under local-currency pricing. The key element in deriving our conclusion is the difference in expenditure shares between home and foreign households. The conclusion holds even if the degrees of home bias in production are identical between home and foreign final-goods producers, which contrasts with the findings in the literature. 相似文献
903.
Jeremy De Valck Steven Broekx Inge Liekens Joris Aertsens Liesbet Vranken 《Environmental and Resource Economics》2017,66(1):17-43
This paper investigates the effect of nearby nature substitute sites on preferences for nature restoration. Contrary to prior studies, we use a respondent-centric approach to control for substitute sites. We assess each respondent-specific spatial context by computing densities of nature substitute sites within various ranges from each respondent’s home. This approach considers the use and non-use values of nature together. Data from three similar discrete choice experiments carried out in Flanders (Belgium) are compared. Different spatial discounting factors are tested to explore how the substitution effect behaves with regard to distance. Latent class analyses are performed to account for preference heterogeneity among respondents. We observe divergent behaviours across groups of respondents. The “distance-to-substitutes” affects how respondents gauge substitute sites. We find a significant influence of the squared average buffer distance but this effect varies in sign across case studies and classes of respondents. Our results demonstrate that individual-specific GIS data can significantly improve the representation of the spatial context and the transferability of value functions. However, the roles played by preference heterogeneity and nature perception on respondents’ capacity to value nature still deserves further attention in future research. 相似文献
904.
Rodney Benjamin Edvinsson 《Cliometrica》2017,11(2):245-268
This study examines whether there was a Malthusian equilibrium mechanism in Sweden in the pre-industrial period. A unique data set on harvests, deaths, marriages and births going back to 1630 is used to calculate cumulative elasticities of vital rates with respect to harvest. While earlier studies have mostly focused on the impact of real wage, this study uses the calorie content of per capita harvests as an indicator of living standards. It finds that there indeed was a response of vital rates to harvest fluctuations, but there were important structural breaks. While positive checks attenuated after 1720, preventive checks were strengthened. After 1870 preventive checks disappeared, and possibly also positive checks. The results are robust to different models and trend specifications, with one crucial difference: while the distributed lag model shows that positive checks were significant up to 1920, the SVAR model shows that positive checks disappeared after 1870. 相似文献
905.
906.
This study employs the linear and nonlinear ARDL cointegration methodologies to examine the potential symmetric and asymmetric responses of suicide rates to unemployment rates in the US from 1928 to 2013. Our results suggest that suicide rates are pro-cyclical with respect to the business cycle (measured by changes in the unemployment rate) after extensively controlling for divorce and fertility rates. Unemployment has symmetric long-run effects on the age-adjusted suicide rate and four age-specific (from ages 25–34 to 55–64) suicide rates, while the effect of an economic expansion on suicide rates for those aged over 45 is greater than the effect of an economic recession. These findings imply that the effect of an economic expansion on the decrease of the suicide rate is higher than the effect of an economic recession on the increase of the suicide rate for individuals aged over 45. Therefore, intervention designed to reduce suicidal behaviors should emphasize periods of economic recession more than periods of economic expansion for those of middle age and beyond. 相似文献
907.
How young firms achieve growth: reconciling the roles of growth motivation and innovative activities
This special issue focuses on entrepreneurship, innovation and enterprise dynamics, as these key components of any prospering economy are at the heart of the current policy discussion. It gathers the latest national and comparative cross-country evidence about: new business venture formation and the role of framework conditions in fostering entrepreneurial activities; the determinants and outcomes of firms’ innovative activities and, more generally, of business and innovation dynamics; and the determinants and patterns of post-entry firm growth performance. The contributions synthesised in this introductory piece all rely on sound micro-level data and robust econometrics and propose novel findings that are relevant for policy making. Among them, that risk aversion encourages individuals to invest in balanced skill profiles, making them more likely to become entrepreneurs; and that while micro firms may grow when they are young, they are less likely to do so when old. 相似文献
908.
Kangoh Lee 《Journal of Regulatory Economics》2017,51(1):1-17
Available evidence shows that consumers overinsure against modest risks. For instance, a majority of consumers tend to choose too low a level of deductible for homeowners insurance and automobile insurance, and purchase excessive warranties for electronics and other durable products such as automobiles and furniture. The analysis demonstrates that overinsurance decreases consumer welfare and increases insurers’ profits. This tendency of overinsurance stems from lack of information about the probability and magnitude of loss, and it calls for policies that require insurers or third-party organizations to provide more, albeit not perfect, information and data for consumers before they make insurance-purchase decisions. The implications of the analysis for other financial products such as stocks and deposits are discussed. 相似文献
909.
党的教育方针把德育放在学生全面发展的领先地位,"德育为先"在理论与实践中被证明是正确的。针对传统德育工作存在的淡化僵化等不足,必须重点推行"三个转变",构建"全体性、全程化、全方位"德育为先体系,在坚持高职专业质量"德育为先"原则的同时,更应重视德育思路与方式的创新。 相似文献
910.