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   5955篇
  免费   96篇
财政金融   540篇
工业经济   1040篇
计划管理   1197篇
经济学   1413篇
综合类   343篇
运输经济   20篇
旅游经济   62篇
贸易经济   453篇
农业经济   311篇
经济概况   648篇
信息产业经济   7篇
邮电经济   17篇
  2024年   7篇
  2023年   42篇
  2022年   72篇
  2021年   111篇
  2020年   129篇
  2019年   95篇
  2018年   71篇
  2017年   123篇
  2016年   102篇
  2015年   107篇
  2014年   141篇
  2013年   262篇
  2012年   399篇
  2011年   911篇
  2010年   739篇
  2009年   464篇
  2008年   429篇
  2007年   425篇
  2006年   434篇
  2005年   376篇
  2004年   131篇
  2003年   108篇
  2002年   113篇
  2001年   66篇
  2000年   45篇
  1999年   32篇
  1998年   30篇
  1997年   10篇
  1996年   14篇
  1995年   6篇
  1994年   5篇
  1993年   9篇
  1992年   9篇
  1991年   4篇
  1990年   5篇
  1989年   5篇
  1988年   8篇
  1986年   4篇
  1985年   2篇
  1984年   4篇
  1979年   1篇
  1854年   1篇
排序方式: 共有6051条查询结果,搜索用时 0 毫秒
21.
Strategizing through analyzing and influencing the network horizon   总被引:2,自引:0,他引:2  
How does a firm keep on being valuable in a network? One requirement is that the firm has a sufficient overview of the network and its dynamics. In other words, a firm's strategy depends on the firm's overview of the network—its network horizon. How comprehensive or limited should its network horizon be? Is it necessary to know the network beyond the direct counterparts? Such issues have not received much attention. In this article, we discuss network horizons and argue that limited network horizons are both inevitable and useful. However, such myopia requires that a firm's counterparts effectively and efficiently mediate between the firm and the rest of the network. Based on a case study, we introduce and discuss three mediating functions of counterparts: a joining, a relating, and an insulating function, and we claim that in order to support a firm's strategizing, managers need to analyze and influence counterparts' mediating functions and thereby the firm's network horizon.  相似文献   
22.
Got milk? The rapid rise of China’s dairy sector and its future prospects   总被引:1,自引:0,他引:1  
This paper synthesizes recent research and new empirical findings to build a more comprehensive understanding of developments in China’s dairy sector. China’s tremendous rise in dairy demand has been driven by several mutually reinforcing factors: including rapid income growth, promotion by the government and dairy industry, changes in urban lifestyles, and the development of new, more sophisticated marketing channels. Domestic milk output has grown to satisfy rising demand largely by increasing the dairy herd. Substantial increases in productivity have been achieved through technology adoption, but there is evidence that the torrid growth has created inefficiencies because adaptations to marketing rules, infrastructure, and institutions have not kept pace with the changing environment. These results suggest there is ample room for future growth in both domestic milk production and dairy demand, but multinational firms and imported products will likely play and increasing role as China’s dairy market continues to develop.  相似文献   
23.
The supreme obstacle for sustainable development of natural resources is the scarecity, bottleneck. So how to promote the sustainable utilizing and increase the using efficiency of natural resources is worth studying. This paper suggests that we should improve the model and means of evaluating method and value management based on th~ theory of natural resource compensation. This paper discusses the User Cost Method based on the microeeonomicaspect which can change the evaluating method for natural resources. From the perspective of value managemen model, we should use the User Cost Method to realize the linkage and integration of micro and macro eompensation for natural resources. Based on the evaluating and aecounting idea User Cost Method, this paper presents a theo. retical framework to harmonize and link micro and macro compensation for natural resources. At present, we should seek the new approach and method to manage natural resources, so can we realize the capitalization managemen focusing on the vahte management for natural resources.  相似文献   
24.
概率论与数理统计的教学体会与教法探讨   总被引:3,自引:0,他引:3  
实施素质教育,大力推进教学改革,如何因材施教,培养学生的思想,能力,学习的积极性是教学中的首要任务。结合多年的教学实践本文对如何培养学生学习兴趣,激发学生的学习能力,开启学生灵活性思维和激发学习的积极性等教学方法进行了探讨。  相似文献   
25.
马宁 《西部论丛》2006,(5):30-31
西藏是我国五个少数民族自治区之一,全区225千公顷耕地,人均0.08公顷,农民人均纯收入1691元,居全国后10位。青藏铁路的建成开通,使得西藏与外界的交流更加迅速便捷,必然会对西藏的农业结构调整和农业经济的发展产生很大的影响。  相似文献   
26.
国防R&D是国防科技创新的源泉.国防R & D活动存在着复杂的委托代理关系,导致分摊成本和信息租金的增加.本文用委托代理理论框架对国防R & D行为主体进行激励分析,通过构建政府与军队、军队与企业在信息不对称条件下的博弈模型,揭示国防R & D活动运行的内在机理以及投资低效的深层次原因,进而对国防R & D活动激励机制进行了针对性设计,提出了一些有意义的对策性思考.  相似文献   
27.
Product life cycle (PLC) prediction plays a crucial role in strategic planning and policy definition for high-technology products. Forecast methodologies which can predict PLCs accurately can help to achieve successful strategic decision-making, forecasting, and foresight activities in high-technology firms, research institutes, governments, and universities. Over the past few decades, even though analytic framework strategies have been proposed for production, marketing, R&D (research and development), and finance, aiming at each stage of PLCs, forecast methodologies with which to predict PLCs are few. The purpose of this research is to develop a novel forecast methodology to allow for predictions of product life time (PLT) and the annual shipment of products during the entire PLC of multiple generation products. A novel two-stage fuzzy piecewise regression analysis method is proposed in this paper. In the first stage, the product life-time of the specific generation to be analyzed will be predicted by the fuzzy piecewise regression line that is derived based upon the product life-time of earlier generations. In the second stage of the forecast methodology, the annual shipment of products of the specified generation will be predicted by deriving annual fuzzy regression lines for each generation, based upon the historical data on the earlier generations' products. An empirical study predicting the life-time and the annual shipment of the 16 Mb (Mega bit) DRAM (Dynamic Random Access Memory) PLC is illustrated to validate the analytical process. The results demonstrate that two-stage fuzzy piecewise regression analysis can predict multiple generation PLT and PLC precisely, thereby serving as a foundation for future strategic planning, policy definitions and foresights.  相似文献   
28.
Based on the unique historical site culture assets, series of culture activities and constructions are held by Taiwan municipal government positively in recent years to raise local strength. Though the city landscape of Taiwan is far away from the traditional one, the comparison and analysis of foundation of cultural industry and the situation of cultural participation should be carried on to find out the real issues in Taiwan's cultural industry and cultural marketing so as to strengthen the ability of local development. This study finds out the resources of culture administration and the social participation in hope for clearing up the matters of Taiwan's cultural industry development, avoiding type Ⅲ errors, and giving suggestions.  相似文献   
29.
A wide range of intractable problems such as polluting emissions, noise, accidents, resource depletion, and inaccessibility of amenities are associated with the current transport regime. Given the slow movement towards a more sustainable mobility system, more radical, systemic innovation - a ‘transition’ - is required. Broadly speaking, this may be achieved via three routes: technological change, modal shift, and reduced travel demand. Drawing on concepts from the transitions literature (e.g., [Geels, F.W.: Technological Transitions and System Innovations: A Co-evolutionary and Socio-Technical Analysis, Edward Elgar, Cheltenham, 2005.]), we conceptualise each of these routes as a bundle of niche activities within an Area of Innovation, deviating to differing degrees from the current mobility ‘regime’. We present empirical evidence and indications of ongoing development of niches in these three areas within the UK and Sweden, and explore processes of co-evolution, divergence and tension within and between niches. Findings indicate recent market penetration of novel transport technologies, more advanced than modal shift or demand management activities; however, different transport technologies are more successful in each country. We also identify examples of a close relationship between development of radical vehicle/fuel technologies and provision of mobility services; and information technology as a driver in all three areas of innovation. We conclude that future innovation in transport depends on diversity, hybridisation, and co-evolution of niches. Finally, policy implications are discussed.  相似文献   
30.
Many see Nanotechnology as the technology that will underlie the next Schumpeterian wave creating new opportunities for wealth and job creation. Further it is a process based or materials technology. Yet all currently used models of innovation are based on assembled products or service products and these simply do not recognize the differences in materials products nor the “enabling” nature of Nanotechnologies. If nanotechnology is poised to become the economic engine of this millennium and if current models of innovation, which are utilized, by policy makers and firm based strategist alike are based on technology product paradigms that are dissimilar to the realities of nanotechnology and other process-based technologies then there is cause for concern.Here the authors provide a model and supporting cases demonstrating a new process or materials based innovation model that is based on the tight coupling between product and process innovation of not only Nanotechnology-based products but other process-based products. This is an important finding, because it identifies and remedies a gap in the literature associated with earlier process and product innovation models. For process-based products like materials, food, chemicals and nanotechnologies any change to the manufacturing processes results in significant changes in end product features. The implications of this model to practice are considered.  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