全文获取类型
收费全文 | 31196篇 |
免费 | 1217篇 |
国内免费 | 542篇 |
专业分类
财政金融 | 2332篇 |
工业经济 | 1886篇 |
计划管理 | 8180篇 |
经济学 | 5960篇 |
综合类 | 3260篇 |
运输经济 | 355篇 |
旅游经济 | 576篇 |
贸易经济 | 3998篇 |
农业经济 | 2553篇 |
经济概况 | 3855篇 |
出版年
2024年 | 173篇 |
2023年 | 613篇 |
2022年 | 744篇 |
2021年 | 1029篇 |
2020年 | 1189篇 |
2019年 | 802篇 |
2018年 | 717篇 |
2017年 | 958篇 |
2016年 | 983篇 |
2015年 | 1085篇 |
2014年 | 2653篇 |
2013年 | 2931篇 |
2012年 | 2606篇 |
2011年 | 2975篇 |
2010年 | 2374篇 |
2009年 | 1981篇 |
2008年 | 1910篇 |
2007年 | 1683篇 |
2006年 | 1424篇 |
2005年 | 1154篇 |
2004年 | 778篇 |
2003年 | 534篇 |
2002年 | 384篇 |
2001年 | 321篇 |
2000年 | 248篇 |
1999年 | 155篇 |
1998年 | 119篇 |
1997年 | 83篇 |
1996年 | 63篇 |
1995年 | 55篇 |
1994年 | 53篇 |
1993年 | 28篇 |
1992年 | 36篇 |
1991年 | 18篇 |
1990年 | 5篇 |
1989年 | 6篇 |
1988年 | 8篇 |
1987年 | 4篇 |
1986年 | 10篇 |
1985年 | 17篇 |
1984年 | 17篇 |
1983年 | 14篇 |
1982年 | 12篇 |
1981年 | 2篇 |
1980年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 421 毫秒
71.
以江泽民为核心的第三代中央领导集体在坚持和继承邓小平科学技术是第一生产力的思想的基础上,与建设有中国特色社会主义的伟大实践相结合,积极探索,勇于创新,极大丰富和发展了邓小平的科学思想. 相似文献
72.
Trevor Davies Roger Elmer 《International Journal of Technology and Design Education》2001,11(2):163-180
The paper introduces the highly problematic nature of modelling in design and technology education and examines the relationship
between cognitive and concrete modelling. Its aim is to gain insight into what learners do, rather than what others say they
ought to do in their learning activities. The variety of purposes that educators have for learners’ modelling are discussed
through examining the contested curriculum justification for design and technology education itself. The paper proposes that
learners’ modelling cannot be extracted from the social milieu in which they act and it provides some insights of these social
influences through the analysis of two case studies. Their settings are a girls’ secondary school and a college of higher
education. Each case study is presented independently but organised with a common format to consider a) the impact of assessment
on learning intentions and outcomes; b) cultural influences on learning and modelling; c) social influences on learning and
modelling. A discussion of the emergent themes considers implications for teachers.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
73.
Using generalized impulse response functions, this study tests for the trade J‐curve for three transitional central European countries – the Czech Republic, Hungary, and Poland – in their bilateral trade with respect to Germany. Our findings suggest that for each country there are some characteristics associated with a J‐curve effect: after a (real or nominal) depreciation the export‐to‐import ratio briefly drops to below its initial value within a few months and then rises to a long run equilibrium value higher than the initial one. 相似文献
74.
Backtesting Value-at-Risk: A Duration-Based Approach 总被引:2,自引:0,他引:2
Financial risk model evaluation or backtesting is a key partof the internal model's approach to market risk management aslaid out by the Basle Committee on Banking Supervision. However,existing backtesting methods have relatively low power in realisticsmall sample settings. Our contribution is the exploration ofnew tools for backtesting based on the duration of days betweenthe violations of the Value-at-Risk. Our Monte Carlo resultsshow that in realistic situations, the new duration-based testshave considerably better power properties than the previouslysuggested tests. 相似文献
75.
Hendrik Jurges 《The Scandinavian journal of economics》2001,103(3):391-414
I investigate whether a bequest motive for savings influences the post-retirement wealth trajectories of German households. Two measures of the bequest motive are studied: the existence of children as the main group of potential heirs and the respondents' declared intention to bequeath. While having children has no significant impact on households' wealth trajectories, stated bequest intentions are associated with considerable heterogeneity in wealth holdings. The main conclusion from this study is that both the pure life-cycle model and the life-cycle model with bequest motives provide a valid basis for a theory of household wealth accumulation once the heterogeneity of preferences is acknowledged.
JEL classification : D 91; J 14 相似文献
JEL classification : D 91; J 14 相似文献
76.
采用三层交换技术,实现VLAN划分、高效的组播控制、流策略的管理和访问控制等功能是有效保证网络资源充分利用,建设高水平网络平台的重要技术措施。通过介绍交换技术的发展,提出了交换技术在企业网络中的应用方案。论证了在企业网络中第三层交换技术的应用是实现简单的网络发展和扩充,提供高性能、高可靠性网络的最佳方案。 相似文献
77.
在特定的经济条件下,全社会货币需求量以及这个量的变动规律,是一国政府制定并执行货币政策和财政政策时所要考虑的重要参数。战后以来,西方国家政府一般是通过货币政策和财政政策的执行,最终影响产出量和就业水平。分析影响货币需求变动的因素及其变量之间的数量关系,是正确地预测货币需求变动的关键。加拿大的货币需求与其相关的经济因素之间的关系;加拿大货币供求与经济增长之间的关系。 相似文献
78.
Previous studies on international marketing have typically asked the question: “how is the demand characterized across countries?” Such analysis is then used to provide guidelines for firms to enter new markets and/or to allocate marketing resources across countries. To provide such normative guidelines, however, one also needs to analyze the supply-side of the problem, i.e., ask: “what is the likely market power that firms will be able to command in different countries?” Building on the New Empirical Industrial Organization (NEIO) framework, recent research in marketing provides marketers with a variety of models to explore competitive interactions among firms in the context of a single market. The goal of this paper is to extend this literature to a multimarket/multinational context to help international marketers assess the likely market power they face when entering new countries. We illustrate the proposed method on the mobile telecommunications industry, using price and quantity data from 10 countries around the world, estimating firms' market power as a function of a number of country characteristics.The results indicate that, while the simple presence of competition diminishes firms' market power, it does not lead to perfect competition. Interestingly, a higher number of competitors in a country does not seem to have significant incremental effect on market power. In contrast, the country's commitment to a severe antitrust policy has a significant negative effect, while the monopolist's lead-time before competition is allowed has a significant positive effect on market power. These findings, together with a change in price elasticities as a result of competition, suggest that market power in different countries may originate from two sources: (i) collusive pricing among cellular operators and (ii) consumers' switching costs across service providers. For international marketers, the findings imply that the attractiveness of wealthier countries (with usually faster diffusion rates and larger market potential) may be mitigated by higher levels of competition (as a result of developed antitrust regulation and more consumer exposure to competitive marketing practices). From a policy point of view, it suggests that (in contrast to the conventional wisdom) simple deregulation may not be enough to reduce prices to competitive levels. In addition, a severe antitrust policy is crucial to achieve this goal. 相似文献
79.
文章对四种汇率波动模型进行简要介绍与说明,指出中国渐进式的改革和开放决定了入世后人民币汇率的制度调整也应是渐进式的,现阶段人民币汇率制度的选择应实行目标区汇率制。 相似文献
80.