全文获取类型
收费全文 | 16868篇 |
免费 | 593篇 |
国内免费 | 13篇 |
专业分类
财政金融 | 2857篇 |
工业经济 | 1186篇 |
计划管理 | 2832篇 |
经济学 | 3869篇 |
综合类 | 325篇 |
运输经济 | 142篇 |
旅游经济 | 322篇 |
贸易经济 | 3321篇 |
农业经济 | 833篇 |
经济概况 | 1757篇 |
邮电经济 | 30篇 |
出版年
2023年 | 119篇 |
2021年 | 150篇 |
2020年 | 259篇 |
2019年 | 320篇 |
2018年 | 509篇 |
2017年 | 600篇 |
2016年 | 537篇 |
2015年 | 333篇 |
2014年 | 474篇 |
2013年 | 1921篇 |
2012年 | 538篇 |
2011年 | 533篇 |
2010年 | 544篇 |
2009年 | 547篇 |
2008年 | 547篇 |
2007年 | 493篇 |
2006年 | 405篇 |
2005年 | 409篇 |
2004年 | 333篇 |
2003年 | 353篇 |
2002年 | 316篇 |
2001年 | 296篇 |
2000年 | 299篇 |
1999年 | 261篇 |
1998年 | 276篇 |
1997年 | 273篇 |
1996年 | 274篇 |
1995年 | 242篇 |
1994年 | 238篇 |
1993年 | 258篇 |
1992年 | 245篇 |
1991年 | 236篇 |
1990年 | 219篇 |
1989年 | 196篇 |
1988年 | 146篇 |
1987年 | 177篇 |
1986年 | 179篇 |
1985年 | 274篇 |
1984年 | 285篇 |
1983年 | 270篇 |
1982年 | 247篇 |
1981年 | 241篇 |
1980年 | 203篇 |
1979年 | 212篇 |
1978年 | 154篇 |
1977年 | 158篇 |
1976年 | 139篇 |
1975年 | 111篇 |
1974年 | 110篇 |
1973年 | 96篇 |
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
31.
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
32.
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
33.
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
34.
Alexandra L. Minicozzi 《Journal of Applied Econometrics》2003,18(3):291-314
Based on intergenerational data from the Panel Study of Income Dynamics, I provide estimates of income mobility across generations for men. Special attention is paid to issues of censoring caused by a son's unemployment. Employing non‐parametric bounds estimates, I illustrate that previous income mobility estimates rely heavily on (unjustified) assumptions of exogenous selection. Assuming a son's potential income is instead a function of his reason for unemployment and work history, I re‐estimate mobility. Allowing for sampling variability, the range of feasible slopes consistent with these modified bounds restrictions is 0.27 to 0.55. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
35.
As educators in the field of risk management and insurance, we see know- ledge of risk management and insurance as a core business function. However, some colleagues and students see insurance as cold-call sales or companies with a lot of money that continue to raise their prices. So we have to find ways to make our public aware of the usefulness of risk management and insurance in the business world and in private life and of the opportunities that having such knowledge presents to all business majors and business people. One method that is beginning to show dramatic improvements in at least our students' perceptions of the field and the major involves industry-sponsored game nights. While not an academic endeavor nor strictly risk management education, we believe the idea provides a useful tool for opening students' eyes to the need for knowledge of risk management and insurance and of the opportunities that are available in the insurance industry and its related fields. This article discusses the history of such an event at Appalachian State Univer- sity, the current status of the North Carolina Surplus Lines Association (NCSLA) event, and the benefits of the event. 相似文献
36.
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
37.
Equilibrium Investment Strategies and Output Price Behavior: A Real-Options Approach 总被引:7,自引:0,他引:7
The effects of competitive interactions on investment decisionsand on the dynamics of the price of a nonstorable commodityare studied in a model of incremental investment with time tobuild and operating flexibility. I find that an increase inuncertainty may encourage firms to increase their capacity.Furthermore, I show that it may be optimal to invest in additionalcapacity during periods in which part of the operational capacityis not being utilized. The impact of competition on the propertiesof the endogenous output price is dramatic. For example, I findthat price volatility may be increasing in the number of competitorsin the industry. 相似文献
38.
The performance of service industries in Canada has been lower than that of good industries over the last four decades, with noticeable exceptions such as for railways and telecommunication carriers. Service industries were less economically (and technically) efficient in that they generated less output value (quantity) per hour worked (level and growth) or per combined unit of labour and capital (multifactor productivity growth) than good industries. The relative output price of services declined slightly over time compared with goods. At the disaggregated level, changing relative output prices were substantial and proved to be an important factor explaining the relative satisfactory economic performance of many service industries despite their low technical performance. Nevertheless, the output share of service industries increased over that period, sustained, mainly, by the growing recourse of all firms to outsourcing of services. 相似文献
39.
40.