全文获取类型
收费全文 | 22849篇 |
免费 | 482篇 |
专业分类
财政金融 | 4044篇 |
工业经济 | 1616篇 |
计划管理 | 3928篇 |
经济学 | 5386篇 |
综合类 | 245篇 |
运输经济 | 176篇 |
旅游经济 | 344篇 |
贸易经济 | 3773篇 |
农业经济 | 1143篇 |
经济概况 | 2599篇 |
信息产业经济 | 3篇 |
邮电经济 | 74篇 |
出版年
2023年 | 108篇 |
2021年 | 149篇 |
2020年 | 284篇 |
2019年 | 455篇 |
2018年 | 498篇 |
2017年 | 528篇 |
2016年 | 516篇 |
2015年 | 352篇 |
2014年 | 562篇 |
2013年 | 2406篇 |
2012年 | 778篇 |
2011年 | 810篇 |
2010年 | 700篇 |
2009年 | 794篇 |
2008年 | 729篇 |
2007年 | 634篇 |
2006年 | 609篇 |
2005年 | 530篇 |
2004年 | 464篇 |
2003年 | 476篇 |
2002年 | 420篇 |
2001年 | 503篇 |
2000年 | 458篇 |
1999年 | 414篇 |
1998年 | 471篇 |
1997年 | 423篇 |
1996年 | 422篇 |
1995年 | 359篇 |
1994年 | 370篇 |
1993年 | 353篇 |
1992年 | 362篇 |
1991年 | 382篇 |
1990年 | 347篇 |
1989年 | 255篇 |
1988年 | 263篇 |
1987年 | 267篇 |
1986年 | 250篇 |
1985年 | 358篇 |
1984年 | 355篇 |
1983年 | 331篇 |
1982年 | 284篇 |
1981年 | 285篇 |
1980年 | 283篇 |
1979年 | 276篇 |
1978年 | 225篇 |
1977年 | 183篇 |
1976年 | 183篇 |
1975年 | 162篇 |
1974年 | 150篇 |
1973年 | 149篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Numerous innovative applications have been developed to utilise large quantity of fly ash generated at coal fired thermal power plants (TPPs) worldwide. However, this requires power plants to undertake the role of third-party innovation intermediaries, that is, commercialising technological innovations developed by others. As commercialising an innovation requires considerable resources, a well-considered selection and promotion are desired. The paper presents a strategic framework for commercialisation of fly ash innovations. Explanation for step-by-step implementation and generic pointers for strategy formulation for typical problems are suggested. The proposed framework is expected to assist coal-fired TPPs in formulating strategies to commercialise innovative utilisation of fly ash. The study contributes to scarcely addressed aspects of an open innovation paradigm, that is, challenges faced by third-party intermediaries. 相似文献
992.
993.
This article analyses the impact of Free Trade Agreements (FTAs) on Middle East and North African Countries (MENA) trade for the period 1994–2010. The analysis distinguishes between industrial and agricultural trade to take into account the different liberalization schedules. An augmented gravity model is estimated using up-to-date panel data techniques to control for all time-invariant bilateral factors that influence bilateral trade as well as for the so-called multilateral resistance factors. We also control for the endogeneity of the agreements and test for self-selection bias due to the presence of zero trade in our sample. The main findings indicate that North–South-FTAs and South–South-FTAs have a differential impact in terms of increasing trade in MENA countries, with the former being more beneficial in terms of exports for MENA countries, but both showing greater global market integration. We also find that FTAs that include agricultural products, in which MENA countries have a clear comparative advantage, have more favourable effects for these countries than those only including industrial products. 相似文献
994.
995.
Elizabeth Becker Cotton M. Lindsay Gary Grizzle 《Managerial and Decision Economics》2003,24(8):549-567
Estimation of the demands for many services supplied by government and charitable organizations are hampered by two practices common to the supply of these services. The suppliers often employ non‐price rationing of these services, and they price discriminate. The supply of college training, for example, is rationed on the basis of academic ability as well as willingness to pay, and more able students are typically quoted lower net prices (associated with scholarships) than less able students. This paper suggests a method for dealing with both practices in the analysis of cross‐sectional data. This methodology is used to investigate the question of why university faculty members are expected to do research as well as teach. One answer supported by our empirical work is that the customers (e.g., the students) demand it. Thus, controlling for price and non‐academic features, better students will choose to attend a university where more scholarly research is performed. Moreover, our empirical findings also support a strong negative link between faculty time devoted to teaching and the supply of research. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
996.
997.
Serafini MW 《National journal》1995,27(20):1230-1234
Many governors want to convert medicaid to a block grant and do away with the myriad federal rules that have vastly expanded the program's reach in recent years. Congress may oblige them. But groups that fought for the rules aren't going to sit still. 相似文献
998.
999.
The analysis of trade-restricting policies under uncertainty has typically argued in favour of the specific tariff over alternative commercial policies such as the ad valorem tariff and the quota, when the raising of revenue and maintenance of consumer's welfare are the policy objectives. This paper reconsiders this result. It is demonstrated that, when the shape of the welfare probability distribution is considered explicitly, the quota may be the dominant trade-restricting policy. In addition, the analysis of trade-restricting instruments is analysed for the case where the principle of safety-first is applied to the revenue-raising objective.We should like to thank an anonymous referee for helpful comments on an earlier draft. 相似文献
1000.
This paper derives the shadow prices of labour and capital to be used in the public sector in a situation of unemployment. The setting considered is that of a three-good, two-period general equilibrium model. Then shadow prices are compared to their corresponding market prices and shown to closely depend on own and cross-elasticities of supply and demand for labour and investment. In the first part, a rigid wage rate is the sole source of distortion; then, a tax on capital income is introduced so that our formula for the social rate of discount can be contrasted with that of Harberger, Sandmo and Drèze. 相似文献