全文获取类型
收费全文 | 61092篇 |
免费 | 1972篇 |
国内免费 | 1101篇 |
专业分类
财政金融 | 5086篇 |
工业经济 | 2446篇 |
计划管理 | 12233篇 |
经济学 | 10722篇 |
综合类 | 12190篇 |
运输经济 | 351篇 |
旅游经济 | 1005篇 |
贸易经济 | 7769篇 |
农业经济 | 4384篇 |
经济概况 | 7977篇 |
信息产业经济 | 2篇 |
出版年
2024年 | 168篇 |
2023年 | 652篇 |
2022年 | 870篇 |
2021年 | 1202篇 |
2020年 | 1543篇 |
2019年 | 1013篇 |
2018年 | 948篇 |
2017年 | 1050篇 |
2016年 | 1148篇 |
2015年 | 1450篇 |
2014年 | 3477篇 |
2013年 | 3999篇 |
2012年 | 4910篇 |
2011年 | 6385篇 |
2010年 | 4686篇 |
2009年 | 4190篇 |
2008年 | 4737篇 |
2007年 | 4513篇 |
2006年 | 4444篇 |
2005年 | 3282篇 |
2004年 | 2340篇 |
2003年 | 1909篇 |
2002年 | 1230篇 |
2001年 | 1120篇 |
2000年 | 747篇 |
1999年 | 372篇 |
1998年 | 184篇 |
1997年 | 193篇 |
1996年 | 139篇 |
1995年 | 82篇 |
1994年 | 65篇 |
1993年 | 76篇 |
1992年 | 51篇 |
1991年 | 39篇 |
1990年 | 40篇 |
1989年 | 27篇 |
1988年 | 20篇 |
1987年 | 12篇 |
1986年 | 12篇 |
1985年 | 174篇 |
1984年 | 193篇 |
1983年 | 137篇 |
1982年 | 99篇 |
1981年 | 57篇 |
1980年 | 73篇 |
1979年 | 45篇 |
1978年 | 36篇 |
1977年 | 23篇 |
1975年 | 1篇 |
1973年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 468 毫秒
991.
林柏 《生态经济(学术版)》2005,(9):47-50
作为我国重要的农产区和传统工业生产基地,淮河流域污染严重,治理污染刻不容缓。由于淮河最主要的污染源来自工业企业,本文着重从工业企业这一微观角度出发,引入绿色营销的概念,分析了企业加强环保意识的重要性,并通过对企业实施绿色营销的博弈分析,指出绿色营销是企业保证可持续发展的必然选择。 相似文献
992.
This paper develops a new technique for proving the existence and indeterminacy of monetary equilibria in money search models
with divisible money. Our technique is substantially simpler than standard constructive proofs in the literature.
This paper is based on the second half of Kamiya and Shimizu (2002). We are very grateful to the associate editor and an anonymous
referee of this journal for their very detailed suggestions and comments. This research is financially supported by Grant-in-Aid
for Scientific Research from JSPS and MEXT. The second author also acknowledges the financial support by Zengin Foundation
for studies on Economics and Finance. 相似文献
993.
面对国外对中国出口商品愈演愈烈的反倾销之势,有效发挥民间商会组织的优势与职能,给企业以依托, 已是打赢反倾销战的关键。因此,应鼓励和加大民间商会的建设力度,利用其特点与优势,充分发挥其职能,以在应对国外反倾销中居于有利地位。 相似文献
994.
中国农村土地制度改革模式探索 总被引:7,自引:0,他引:7
农村土地制度不仅是中国革命的根本性问题,在相当长时期内,仍将是中国现代化建设的最基础问题,尤其是当前解决"三农"问题的迫切性及中国建立和谐社会目标是否已经构成了土地制度新突破的能量呢?果真如此,那么,条件是否具备?时机是否成熟?本文通过对我国农村土地制度的局限性和存在的问题分析后认为,中国农村土地制度改革已经到了必须进行所有制变革的时候了.而考虑到中国具体实际和改革面临的阻力,笔者提出了改革的战略思路是:第一阶段实行土地股份所有,市场化经营;第二阶段实行农村土地农民个人所有制. 相似文献
995.
In this paper we study an industry in which there is an ongoing sequence of R&D races between two firms. Firms are engaged in product innovation. Products are horizontally and vertically differentiated. There are two key characteristics/dimensions to products, and the level at which these are embodied in products can be increased by R&D. At each time firms can spend R&D on improving their product in one or both dimensions. We allow the possibility of economies scope — so R&D undertaken in one dimension can spillover to the other. The question we are interested in is whether a firm that is ahead in a single dimension but behind in another will focus all its R&D effort in the area in which it is ahead (product specialisation), or whether it will try to do R&D in both dimensions in the hope that it might get ahead in both and end up with a superproduct that dominates in both characteristics. The outcome of this R&D competition determines a Markov transition probability matrix determining the evolution of the industry. We show that when the R&D technology is characterized by constant returns then the only steady-state outcome is one in which the economy stays forever in a position in which one firm produces a super-product and the other gives up doing R&D altogether. This outcome is unaffected by the degree of economies of scope. When the R&D technology is characterised by decreasing returns, then the industry will visit all states and so will exhibit both product specialisation and superproduct dominance at various times. Now the extent of economies of scope matters and we show that the greater the extent of economies of scope, the less likely is the industry to exhibit product dominance, and the more likely it is to exhibit product specialisation. 相似文献
996.
邓启惠 《生态经济(学术版)》1993,(6):23-27
经济体制改革的理论基础不仅仅是社会主义市场经济理论,生态经济理论也是其中之一,这是由生态经济理论原则及特点所决定了的。同时,改革的目标是建立社会主义市场经济体制,在新体制的建立过程中,也必须注意实现生态经济协调的几个问题。 相似文献
997.
998.
Significant increases in atmospheric carbon dioxide are occuring as a result of fossil fuel combustion. More than a four-fold increase over preindustrial levels may occur by the year 2100. Heating of the atmosphere, changes in precipitation patterns and global storm paths, and other resulting effects are sure to cause significant social changes. This article is essentially a methodological case study demonstrating a useful but inexpensive type of technology assessment. It summarizes current research findings on “the CO2 effect,” and presents hitherto unpublished findings that resulted from a brief but systems-oriented approach. These findings suggest that most published forecasts of phenomena associated with a CO2 buildup may be systematically low because various positive feedback relationships are not reflected. 相似文献
999.
环境保护规划的可持续发展需要有先进理念的指导,应用循环经济理论框架来指导环境保护规划对区域可持续发展具有重要意义。本文通过分析循环经济的内涵、原则及其层次性,并结合我国珠江三角洲地区环境保护规划目标和对策进行了深入研究和探讨。分析得出,应用循环经济理念框架来指导环境保护规划是一种适宜的选择,与传统环境保护规划相比,基于循环经济理论框架指导下的区域环境保护规划更强调污染废气物排放减量化、企业生产清洁化、工业生态化以及区域固体废物的循环再利用。 相似文献
1000.
Current Account, Capital Formation and Terms of Trade Shocks: a Revisit of the Harberger-Laursen-Metzler Effect 总被引:1,自引:0,他引:1
This paper extends the Blanchard model of a closed-economy to a three-good (exportable, importable and non-tradable goods)
open-economy model with capital accumulation and uncertain lifetimes to study the impacts of terms of trade shocks on the
current account. The simulation results show that a model with uncertain lifetimes is more appropriate to describe a small
open economy like Taiwan at the steady-state equilibrium than a model with infinite lifetimes. We find that the Harberger-Laursen-Metzler
effect is discernible for temporary or permanent terms of trade shocks. Furthermore, the steady state is a saddle point and
the speed of convergence of capital and consumption is quite low. 相似文献