全文获取类型
收费全文 | 16240篇 |
免费 | 567篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 2645篇 |
工业经济 | 1118篇 |
计划管理 | 2880篇 |
经济学 | 4042篇 |
综合类 | 208篇 |
运输经济 | 141篇 |
旅游经济 | 193篇 |
贸易经济 | 2743篇 |
农业经济 | 670篇 |
经济概况 | 2092篇 |
邮电经济 | 76篇 |
出版年
2023年 | 136篇 |
2021年 | 158篇 |
2020年 | 275篇 |
2019年 | 349篇 |
2018年 | 486篇 |
2017年 | 605篇 |
2016年 | 531篇 |
2015年 | 306篇 |
2014年 | 457篇 |
2013年 | 1925篇 |
2012年 | 556篇 |
2011年 | 571篇 |
2010年 | 536篇 |
2009年 | 602篇 |
2008年 | 476篇 |
2007年 | 416篇 |
2006年 | 368篇 |
2005年 | 385篇 |
2004年 | 290篇 |
2003年 | 353篇 |
2002年 | 284篇 |
2001年 | 277篇 |
2000年 | 278篇 |
1999年 | 266篇 |
1998年 | 240篇 |
1997年 | 251篇 |
1996年 | 227篇 |
1995年 | 181篇 |
1994年 | 196篇 |
1993年 | 218篇 |
1992年 | 227篇 |
1991年 | 211篇 |
1990年 | 211篇 |
1989年 | 187篇 |
1988年 | 170篇 |
1987年 | 172篇 |
1986年 | 188篇 |
1985年 | 227篇 |
1984年 | 215篇 |
1983年 | 194篇 |
1982年 | 188篇 |
1981年 | 192篇 |
1980年 | 175篇 |
1979年 | 197篇 |
1978年 | 156篇 |
1977年 | 150篇 |
1976年 | 129篇 |
1975年 | 96篇 |
1974年 | 104篇 |
1973年 | 106篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
The paper examines the effect of population ageing on public education spending. On the one hand, ageing is expected to have a negative effect on education, as an increasing number of retirees results in ‘intergenerational conflict’ and, hence, the condemnation of education expenditure. On the other hand, ageing, in combination with pay-as-you-go pension systems, offers incentives for the working-age generation to invest in the public education of the young in order to ‘reap’ the benefits (that is, higher income tax/contributions) of their greater future productivity. Empirical evidence derived from the application of a fixed effects approach to panel data for OECD countries shows that the increasing share of elderly people has a non-linear effect on education spending. This indicates a certain degree of intergenerational conflict. Nevertheless, we find that future population ageing, which reinforces the mechanism linking public education and pensions, reflects positively on education expenditure. Furthermore, by disaggregating total education expenditure by educational levels, we observe that this effect is led by levels of non-compulsory education, probably as a reflection of the direct connection to labor productivity. 相似文献
32.
33.
Javier Carbonell Antonio Sánchez-Esguevillas Belén Carro 《Technology Analysis & Strategic Management》2018,30(1):113-129
This paper considers the Web as a big data container that can be used by Technology Observatories and administrations to track emerging issues and more specifically emerging technologies. It considers information that is available on the Internet for free from different sources, and proposes a framework that can be useful to characterise them and to detect patterns of dissemination. This framework is made up of 30 metrics obtained from different kinds of sources (general web, patents, scholars?…). Some of them are obtained directly as the number of hits retrieved by queries on a search engine, and other ones calculated by means of ratios. This paper contains the development of a complete case that utilises this framework to characterise emerging technologies included in the well-known Hype Cycle for Emerging Technologies, in this case the 2015 release1 and to analyze patterns of dissemination of these technologies on the Internet. 相似文献
34.
Christoffel Venter Gail Jennings Darío Hidalgo Andrés Felipe Valderrama Pineda 《International Journal of Sustainable Transportation》2018,12(2):140-152
The paper offers an analysis of empirical evidence on the equity impacts of operational Bus Rapid Transit (BRT) systems in the Global South. The focus is on vertical equity, i.e. whether BRT systems achieve progressive benefits for poorer segments of the population. Findings from Africa, Asia, and Latin America all suggest that BRT does offer significant benefits to low-income groups, in terms of travel time and cost savings, access enhancement, and safety and health benefits. However benefits are often skewed toward medium-income users and thus less progressive than they might be. Two primary reasons for this are insufficient spatial coverage and inappropriate fare policies. While many features of BRT potentially allow it to deliver pro-poor outcomes, such outcomes only materialize if BRT implementers pay specific and sustained attention to equity. The paper identifies key issues that need to be addressed to steer BRT implementation toward more socially sustainable outcomes—including better integration with other transit, paratransit, and nonmotorized transport services, and with the housing sector. 相似文献
35.
I examine the effect of reform on telecom performance using a second-generation regulatory framework index and panel data techniques to test how regulatory governance affected sector performance in 22 Latin American countries during the period 1980–1997. Sound regulatory governance in telecommunications has a positive impact on network expansion and efficiency, in both the static and dynamic specifications. Openness of markets to competition and divestment of former state-owned telco operators also contributed positively to better sector performance. The dynamic specification shows that past performance has its own strong effect on present (and perhaps future) performance. 相似文献
36.
37.
This study explores relationships between race, gender, agreeableness, openness to experience, contact, and a measure of attitudes toward diversity—universal‐diverse orientation (UDO). UDO consists of three attitudinal components: realistic appreciation (a cognition), comfort with difference (a feeling), and diversity of contact (a behavior). Results suggest that race, agreeableness, and openness relate to UDO attitudes, primarily due to the relationships of these variables with the behavioral component—diversity of contact. Identifying characteristics of tolerant people (e.g., agreeableness) and training managers in skills related to those characteristics may improve contextual performance and make managers better role models within the organizational context. © 2003 Wiley Periodicals, Inc. 相似文献
38.
39.
40.
L. Zhang Simon X. B. Zhao J. P. Tian 《International journal of urban and regional research》2003,27(4):912-937
This article focuses on the housing issues of rural migrants arising from urbanization, with particular reference to chengzhongcun, a topic with considerable impact on policymaking. An attempt is made to understand the underlying rationale of self‐help in housing and the important role of chengzhongcun in sheltering rural migrants in the context of China's rural‐urban dichotomy. As demonstrated in this study, chengzhongcun accommodate, with little in the way of government resources and assistance, millions of rural migrants because of their social accessibility and affordability. While not denying their social problems, we argue that chengzhongcun in fact act as an innovative and positive agent to promote urbanization in present day China by housing massive numbers of rural migrants and assimilating them into cities. Current government policies towards chengzhongcun have generated a wide range of interest conflicts and confrontations. The consequences of such conflicts show that the government policies were problematic and unworkable, as they violated basic market principles as well as citizen rights. Policy strategy towards the redevelopment of chengzhongcun must acknowledge their credibility in the Chinese road to urbanization and requires more thoughtful and prudent consideration of migrants' demands for affordable housing. 相似文献