首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   339篇
  免费   21篇
财政金融   42篇
工业经济   18篇
计划管理   42篇
经济学   79篇
综合类   5篇
运输经济   2篇
旅游经济   2篇
贸易经济   93篇
农业经济   55篇
经济概况   22篇
  2023年   2篇
  2021年   7篇
  2020年   2篇
  2019年   8篇
  2018年   11篇
  2017年   7篇
  2016年   7篇
  2015年   9篇
  2014年   11篇
  2013年   41篇
  2012年   20篇
  2011年   26篇
  2010年   14篇
  2009年   8篇
  2008年   10篇
  2007年   11篇
  2006年   10篇
  2005年   8篇
  2004年   10篇
  2003年   6篇
  2002年   8篇
  2001年   8篇
  2000年   10篇
  1999年   7篇
  1998年   9篇
  1997年   7篇
  1996年   5篇
  1995年   7篇
  1994年   4篇
  1993年   3篇
  1992年   4篇
  1991年   2篇
  1990年   8篇
  1989年   2篇
  1988年   3篇
  1987年   3篇
  1986年   4篇
  1985年   4篇
  1984年   3篇
  1983年   3篇
  1981年   3篇
  1980年   2篇
  1977年   2篇
  1976年   3篇
  1975年   3篇
  1973年   3篇
  1971年   2篇
  1957年   1篇
  1955年   1篇
  1948年   1篇
排序方式: 共有360条查询结果,搜索用时 15 毫秒
71.
72.
ABSTRACT

ICT components, such as microprocessors, may be embodied in other capital goods not recorded as ICT in National Accounts. We name ‘indirect ICT investment’ the value of embodied ICT components in non-ICT investment. The paper provides estimates of ‘indirect ICT investment’ based on detailed and unpublished Supply-Use tables (SUT) in 12 OECD countries: Australia, Belgium, Canada, Chile, Czech Republic, Denmark, France, Germany, Japan, Israel, Mexico, New Zealand, the United Kingdom, and the United States.

Our main finding is that ICT investment appears significantly higher when considering its indirect component, the average increase being about 35%. The inclusion of indirect ICT investment, excluding software (for which firms’ expenditures are difficult to measure), changes significantly the relative position of countries with respect to the ICT intensity of their investments. The inclusion of software further increases indirect ICT investment but the increase is smaller (in percentage) than without this inclusion. A final result, but concerning only three countries, it that the diagnosis of a stabilisation, or even a decrease, of ICT investment in percentage of GDP or of total investment, observed from the beginning of the century, is not modified if we take into account the indirect ICT investment.  相似文献   
73.
美国供应链信息披露新法规涉及冲突矿产   总被引:1,自引:0,他引:1  
金融危机爆发以后,美国国会通过了多德·弗兰克金融改革法案以改革金融体系。除了针对金融机构,该法案也包含了一个对更多行业将会产生巨大影响的条款,内容涉及冲突性地区金属矿产的获取。从2013年开始,许多在美国上市的公司必须对美国证券委员会提交关于企业供应链来源的报告,这一新的信息披露要求,对企业提出了一个复杂的责任问题。  相似文献   
74.
The impact of multinational firms on the domestic agricultural sector in developing countries is controversial, in particular in India. Relying on a unique set of household‐level data from the state of Punjab, we study the biggest dairy company in the world (Nestlé) in India and compare its vertical spillover effects on upstream suppliers to other market channels (informal sector and cooperatives). We find that farmers that supply informal channels are less efficient and earn lower profits per dairy animal than farmers supplying the cooperative and the multinational sector. Furthermore, we find that farmers using the multinational channel are more efficient than farmers in the cooperative channel, but equally profitable. Hence, we do not find that supplying the cooperative channel is more beneficial for local dairy farmers than supplying the multinational channel. Overall, however, dairy productivity and profitability levels are still dramatically low, with substantial scope for dairy development.  相似文献   
75.
Electricity mergers pose distinct challenges for competition policy. Electricity demand is highly inelastic in the short run, storage is limited, and transmission constraints limit the ability to substitute generation at other locations. As a result, a merger can affect prices in many different markets and even generators with small market shares may be able to exercise market power. The U.S. Federal Energy Regulatory Commission’s approach for screening horizontal mergers, based on the concentration thresholds in the Department of Justice/Federal Trade Commission Horizontal Merger Guidelines, can fail to identify mergers that lessen competition, and mergers that fail the FERC screen may have no significant anticompetitive effect. We propose competitive residual demand (CRD) analysis, which examines the supply curves of the markets affected by a merger and considers the ability and incentive of firms to raise prices before and after a proposed merger. CRD analysis is a relatively easy way to address the incentives for generators to exercise market power and relies on data that are often available. Vertical (convergent) mergers between electricity and gas raise additional concerns, and we propose a methodology to screen vertical mergers.  相似文献   
76.
We critically assess integrative social contracts theory (ISCT) and show that the concept particularly lacks of moral justification of substantive hypernorms. By drawing on Habermasian philosophy, in particular discourse ethics and its recent application in the theory of deliberative democracy, we further advance ISCT and show that social contracting in business ethics requires a well-justified procedural rather than a substantive focus for managing stakeholder relations. We also replace the monological concept of hypothetical thought experiments in ISCT by a concept of practical discourse to better govern business activities on the macro-level of organizational actors such as firms, governments, and NGOs.  相似文献   
77.
Geographical Indications (GIs) are increasingly important instruments of agricultural and food regulations and are growing as contentious issues in trade negotiations and disputes. GIs can improve welfare but they can also be a protectionist instrument. The EU has the most GIs in the world, but they are concentrated in the south of the EU. Even excluding wine, there are seven times more food GIs per capita in the southern EU Member States than in other EU Member States. This note discusses several factors which may explain the geographic concentration of GIs in the south of the EU.  相似文献   
78.
Review of Industrial Organization - (Global) value chains have contributed to agricultural technology adoption in transition countries and food export commodities in developing countries through...  相似文献   
79.
We consider “functionally distributed” quotas, where trade is restricted to a function of another economic activity, paying special attention to the ratio constraint and its relation to “proportionally distributed” quotas. We propose a simple principle defining the optimal policy under a functionally defined restriction, extend the analysis of ratio import/production constraints to general equilibrium, introduce export constraints, and constraints defined in proportion to factor use. We develop the general‐equilibrium geometry of functional trade constraints and the concomitant optimal policies, deriving a “quota locus” that depicts the consumption possibilities under various regimes.  相似文献   
80.
This paper investigates when patent races will be characterized by vigorous competition and when they will degenerate into a monopoly. Undersome conditions, a firm with an arbitrarily small headstart can preempt its rivals. Such ‘?-preemption’ is shown to depend on whether a firm that is behind in the patent race, as measured by the expected time remaining until discovery, cant ‘leapfrog’ the competition and become the new leader. An example of an R&D game with random discovery illustrates how ?-preemption can occur when leapfrogging is impossible. A multi-stage R&D process allows leapfrogging and thus permits competition. A similar conclusion emerges in a model of a deterministic patent race with imperfect monitoring of rival firms' R&D investment activities.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号