全文获取类型
收费全文 | 5656篇 |
免费 | 125篇 |
专业分类
财政金融 | 1228篇 |
工业经济 | 437篇 |
计划管理 | 903篇 |
经济学 | 1190篇 |
综合类 | 91篇 |
运输经济 | 43篇 |
旅游经济 | 114篇 |
贸易经济 | 983篇 |
农业经济 | 258篇 |
经济概况 | 532篇 |
邮电经济 | 2篇 |
出版年
2023年 | 27篇 |
2021年 | 40篇 |
2020年 | 86篇 |
2019年 | 99篇 |
2018年 | 117篇 |
2017年 | 123篇 |
2016年 | 115篇 |
2015年 | 90篇 |
2014年 | 122篇 |
2013年 | 683篇 |
2012年 | 149篇 |
2011年 | 203篇 |
2010年 | 167篇 |
2009年 | 200篇 |
2008年 | 176篇 |
2007年 | 171篇 |
2006年 | 129篇 |
2005年 | 142篇 |
2004年 | 125篇 |
2003年 | 148篇 |
2002年 | 136篇 |
2001年 | 110篇 |
2000年 | 127篇 |
1999年 | 126篇 |
1998年 | 138篇 |
1997年 | 118篇 |
1996年 | 99篇 |
1995年 | 111篇 |
1994年 | 90篇 |
1993年 | 80篇 |
1992年 | 68篇 |
1991年 | 83篇 |
1990年 | 74篇 |
1989年 | 58篇 |
1988年 | 60篇 |
1987年 | 56篇 |
1986年 | 65篇 |
1985年 | 97篇 |
1984年 | 98篇 |
1983年 | 92篇 |
1982年 | 78篇 |
1981年 | 73篇 |
1980年 | 72篇 |
1979年 | 67篇 |
1978年 | 75篇 |
1977年 | 68篇 |
1976年 | 68篇 |
1975年 | 60篇 |
1974年 | 57篇 |
1973年 | 39篇 |
排序方式: 共有5781条查询结果,搜索用时 0 毫秒
31.
32.
The paper proposes a framework for modelling cointegration in fractionally integrated processes, and considers methods for testing the existence of cointegrating relationships using the parametric bootstrap. In these procedures, ARFIMA models are fitted to the data, and the estimates used to simulate the null hypothesis of non-cointegration in a vector autoregressive modelling framework. The simulations are used to estimate p-values for alternative regression-based test statistics, including the F goodness-of-fit statistic, the Durbin–Watson statistic and estimates of the residual d. The bootstrap distributions are economical to compute, being conditioned on the actual sample values of all but the dependent variable in the regression. The procedures are easily adapted to test stronger null hypotheses, such as statistical independence. The tests are not in general asymptotically pivotal, but implemented by the bootstrap, are shown to be consistent against alternatives with both stationary and nonstationary cointegrating residuals. As an example, the tests are applied to the series for UK consumption and disposable income. The power properties of the tests are studied by simulations of artificial cointegrating relationships based on the sample data. The F test performs better in these experiments than the residual-based tests, although the Durbin–Watson in turn dominates the test based on the residual d. 相似文献
33.
34.
35.
James T. Areddy 《海外经济评论》2008,(6):44-46
中国股市从不久前的辉煌之巅急转直下,而与此同时,这个全球第一人口大国的投资者们又将获得新的渠道进军包括美国在内的海外股市。 相似文献
36.
Alexander E. Ellinger Daniel F. Lynch James K. Andzulis Ronn J. Smith 《Journal of Business Logistics》2003,24(1):199-220
An Internet presence is a critical early component in the process of building towards a fully operational and unified e‐commerce strategy. E‐commerce has significantly impacted logistics/supply chain strategies and the development and implementation of a website have become key issues for many firms within the transportation industry. This study provides an overview of website content within the motor carrier industry. Content analysis was used to assess the site design, informational content, and the interactive content of 152 motor carrier websites, and to compare the features offered on the Top 100 motor carrier firm websites with those offered on the sites of smaller carrier firms. 相似文献
37.
Close relationships between and among supply chain members are becoming more prevalent. However, there is lack of agreement in the literature and in practice concerning the characteristics of different interorganizational relationships. The resultant confusion is an obstacle to the progression of research and could cause problems among firms in a supply chain. Based on previous research and an exploratory study conducted with company executives responsible for supply chain management activities, this article seeks to introduce the concept of relationship magnitude (i.e., the extent or degree of closeness or strength of the relationship) and differentiate it from relationship type (i.e., classes of relationships that share common traits). Implications for managers and opportunities for future research are provided. 相似文献
38.
The Lowry Model Revisited: Incorporating a Multizonal Input-Output Model into an Urban Land Use Allocation Model 总被引:2,自引:0,他引:2
Myung-jin Jun & James E. Moore 《Review of urban and regional development studies : RURDS : journal of the Applied Regional Conference》2002,14(1):2-17
This paper formulates a new generation of Lowry-style models that combine a multizonal input-output model and an urban land use allocation model. Three different types of models are proposed: 1) an unconstrained model, 2) a primal of a linear programming approach that includes land supply constraints, and 3) a modified dual of the linear programming approach that allocates land based on additional conditions of economic efficiency. The modified dual formulation improves upon the limitations of Lowry models and their derivatives. First, the proposed model has sound theoretical underpinnings that incorporate the production theory of input-output models and the behavioral theory of optimization models. Second, the proposed model allocates land on the basis of economic efficiency by imposing a procedure that equalizes shadow prices. And third, the proposed model is an optimization model that fully accounts for the spatial and sectoral relationships of multiplier effects determining land use demand. 相似文献
39.
James Hodge 《Development Southern Africa》2004,21(1):205-225
A priority for the post‐apartheid government was the extension of basic infrastructure services to the vast majority of citizens that were not serviced under apartheid. The Reconstruction and Development Programme set objectives for each of these utilities that would be achieved in the first decade of democracy, while departmental policy aimed to find means of achieving these targets. The strategy of choice in most sectors was one of ambitious roll‐out targets being set for utility operators. Targets were set for individual residential service (‘universal service’) and for community service outside of individual homes (‘universal access’). While most utilities remained under public ownership, in telecommunications there was partial privatisation of the incumbent Telkom and the entry of privately owned mobile cellular operators. This article examines how roll‐out targets and licence conditions for universal service have performed in this sector where private operators exist. It examines the failure of the Telkom licence and draws out some lessons for policy. 相似文献
40.
This article addresses the societal and cultural aspects of bioreserves and environmental restoration programmes. It begins with a discussion of bioreserves, then uses the example of a Man and Biosphere (MAB) inspired study of the US Everglades to illustrate how land has been shaped historically by culture and technology. It then demonstrates how current conflicts of values and culture, from both inside and outside the region, from interest groups with both pragmatic and emotional stances, are determining the future of an environment—the Everglades. The article thereby shows how human values and perceptions impact on the development of a sustainable Everglades, using the findings of surveys and public meetings to highlight the interests of the competing communities, ethnic and interest groups involved. If bioreserves are to survive they cannot become alienated from the people in the regions in which they are located. 相似文献