全文获取类型
收费全文 | 32206篇 |
免费 | 885篇 |
专业分类
财政金融 | 5943篇 |
工业经济 | 2434篇 |
计划管理 | 5573篇 |
经济学 | 7359篇 |
综合类 | 350篇 |
运输经济 | 250篇 |
旅游经济 | 514篇 |
贸易经济 | 5299篇 |
农业经济 | 1600篇 |
经济概况 | 3672篇 |
信息产业经济 | 3篇 |
邮电经济 | 94篇 |
出版年
2023年 | 166篇 |
2021年 | 218篇 |
2020年 | 408篇 |
2019年 | 637篇 |
2018年 | 702篇 |
2017年 | 747篇 |
2016年 | 746篇 |
2015年 | 483篇 |
2014年 | 766篇 |
2013年 | 3431篇 |
2012年 | 1059篇 |
2011年 | 1125篇 |
2010年 | 984篇 |
2009年 | 1104篇 |
2008年 | 1017篇 |
2007年 | 894篇 |
2006年 | 841篇 |
2005年 | 732篇 |
2004年 | 669篇 |
2003年 | 676篇 |
2002年 | 650篇 |
2001年 | 690篇 |
2000年 | 683篇 |
1999年 | 601篇 |
1998年 | 676篇 |
1997年 | 626篇 |
1996年 | 609篇 |
1995年 | 513篇 |
1994年 | 520篇 |
1993年 | 515篇 |
1992年 | 517篇 |
1991年 | 532篇 |
1990年 | 497篇 |
1989年 | 370篇 |
1988年 | 369篇 |
1987年 | 380篇 |
1986年 | 379篇 |
1985年 | 536篇 |
1984年 | 491篇 |
1983年 | 468篇 |
1982年 | 389篇 |
1981年 | 416篇 |
1980年 | 387篇 |
1979年 | 397篇 |
1978年 | 340篇 |
1977年 | 254篇 |
1976年 | 267篇 |
1975年 | 232篇 |
1974年 | 208篇 |
1973年 | 209篇 |
排序方式: 共有10000条查询结果,搜索用时 647 毫秒
191.
Christian M Rogerson 《Development Southern Africa》2002,19(1):143-167
Local economic development (LED) planning is of major policy importance in post-apartheid South Africa. Although issues surrounding LED have attracted considerable policy attention, one neglected theme has been the role of tourism as a lead sector for LED. The aim of this article is to examine the planning and workings of one tourism-led LED initiative in South Africa. The case study is that of the Highlands Meander in Mpumalanga province, where five towns are collaborating in their LED initiatives in order to promote the area's tourism products. A key finding is that this growing tourism initiative is currently not benefiting local black communities. Recommendations are offered for developing a pro-poor tourism initiative. 相似文献
192.
193.
194.
The Dynamics of Alliance Conditions in the Alliance Development Process 总被引:10,自引:0,他引:10
One of the key issues in understanding the developmental processes of strategic alliances is how the alliance conditions change over the different stages of alliance development. A related question concerns the nature of the co-evolutionary dynamics of alliances in terms of their constituent partner firms. In this article we propose an integrated process model of alliances that is based on alliance conditions, allianc developmental stages, and an alliance system comprising co-evolutionary elements. We suggest that alliance conditions, or the key characteristics of an alliance at any given moment, link the alliance environment (firm characteristics) and the alliance development process. We also explore how specific patterns of alliance conditions have differential impacts on the interactive elements of the alliance co-evolutionary system. 相似文献
195.
Sufficient conditions are found for designs, derived from completely symmetric designs by deleting binary blocks, to be E-optimal. Sufficient conditions are also found for E-optimality of designs obtained from other E-optimal designs by deleting all blocks forming a balanced incomplete block design on a subset of the treatments. The results include many binary and non-binary designs for which E-optimality was previously unknown. 相似文献
196.
Ross Jones 《The Australian economic review》2002,35(4):430-437
This article examines the ACCC's enforcement of competition policy, the need to strengthen its anti-competitive provisions and the criticism of the ACCC's power. 相似文献
197.
This article deals with the prediction problem in linear regression where the measurements are obtained using k different devices or collected from k different independent sources. For the case of k=2, a Graybill-Deal type combined estimtor for the regression parameters is shown to dominate the individual least squares
estimators under the covariance criterion. Two predictors ŷ
c and ŷ
p are proposed. ŷ
c is based on a combined estimator of the regression coefficient vector, and ŷ
p is obtained by combining the individual predictors from different models. Prediction mean square errors of both predictors
are derived. It is shown that the predictor ŷ
p is better than the individual predictors for k≥2 and the predictor ŷ
c is better than the individual predictors for k=2. Numerical comparison between ŷ
c and ŷ
p shows that the former is superior to the latter for the case k=2. 相似文献
198.
Carmen M. ReinhartR.Todd Smith 《Journal of International Economics》2002,57(2):327-351
During the past decade a number of countries imposed capital controls that had two distinguishing features: they were asymmetric, in that they were designed principally to discourage capital inflows, and they were temporary. This paper studies formally the consequences of these policies, calibrates their potential effectiveness, and assesses their welfare implications in an environment in which the level of capital inflows can be sub-optimal. In addition, motivated by the fact that these types of controls have often been left in place after the dissipation of the shock that lead to the controls being implemented, the paper evaluates the welfare cost of procrastination in removing these types of controls. 相似文献
199.
Despite the importance of the London markets and the significance of the relationship for market makers, little published research is available on arbitrage between the FTSE‐100 Index futures and the FTSE‐100 European index options contracts. This study uses the put–call–futures parity condition to throw light on the relationship between options and futures written against the FTSE Index. The arbitrage methodology adopted in this study avoids many of the problems that have affected prior research on the relationship between options or futures prices and the underlying index. The problems that arise from nonsynchroneity between options and futures prices are reduced by the matching of options and futures prices within narrow time intervals with time‐stamped transaction data. This study allows for realistic trading and market‐impact costs. The feasibility of strategies such as execute‐and‐hold and early unwinding is examined with both ex‐post and ex‐ante simulation tests that take into consideration possible execution time lags for the arbitrage trade. This study reveals that the occurrence of matched put–call–futures trios exhibits a U‐shaped intraday pattern with a concentration at both open and close, although the magnitude of observed mispricings has no discernible intraday pattern. Ex‐post arbitrage profits for traders facing transaction costs are concentrated in at‐the‐money options. As in other major markets, despite important microstructure differences, opportunities are generally rapidly extinguished in less than 3 min. The results suggest that arbitrage opportunities for traders facing transaction costs are small in number and confirm the efficiency of trading on the London International Financial Futures and Options Exchange. © 2002 John Wiley & Sons, Inc. Jrl Fut Mark 22:31–58, 2002 相似文献
200.