全文获取类型
| 收费全文 | 2332篇 |
| 免费 | 132篇 |
| 国内免费 | 1篇 |
专业分类
| 财政金融 | 77篇 |
| 工业经济 | 43篇 |
| 计划管理 | 713篇 |
| 经济学 | 481篇 |
| 综合类 | 105篇 |
| 运输经济 | 77篇 |
| 旅游经济 | 51篇 |
| 贸易经济 | 127篇 |
| 农业经济 | 528篇 |
| 经济概况 | 263篇 |
出版年
| 2025年 | 14篇 |
| 2024年 | 34篇 |
| 2023年 | 39篇 |
| 2022年 | 63篇 |
| 2021年 | 82篇 |
| 2020年 | 195篇 |
| 2019年 | 82篇 |
| 2018年 | 41篇 |
| 2017年 | 91篇 |
| 2016年 | 88篇 |
| 2015年 | 89篇 |
| 2014年 | 135篇 |
| 2013年 | 96篇 |
| 2012年 | 176篇 |
| 2011年 | 244篇 |
| 2010年 | 183篇 |
| 2009年 | 165篇 |
| 2008年 | 164篇 |
| 2007年 | 126篇 |
| 2006年 | 141篇 |
| 2005年 | 67篇 |
| 2004年 | 48篇 |
| 2003年 | 32篇 |
| 2002年 | 13篇 |
| 2001年 | 10篇 |
| 2000年 | 10篇 |
| 1999年 | 9篇 |
| 1998年 | 2篇 |
| 1997年 | 2篇 |
| 1996年 | 3篇 |
| 1995年 | 2篇 |
| 1994年 | 2篇 |
| 1993年 | 4篇 |
| 1992年 | 3篇 |
| 1988年 | 1篇 |
| 1985年 | 1篇 |
| 1984年 | 4篇 |
| 1983年 | 1篇 |
| 1977年 | 1篇 |
| 1976年 | 1篇 |
| 1975年 | 1篇 |
排序方式： 共有2465条查询结果，搜索用时 0 毫秒
61.
Issy Drori;Dovev Lavie; 《Journal of Management Studies》2024,61(8):3754-3785
Research on innovation ecosystems has identified their evolution phases but neglected their emergence, which we know little about. We offer inductive theory to explain the emergence of the nanotechnology ecosystem in Israel. Our theory suggests that ineffective bureaucracy, resource constraints, and the conflicting agendas of the government and universities create organizational bottlenecks that impede the ecosystem's emergence. Only once these actors establish related dedicated units that are immune to these deficiencies and transition to simultaneous competition and cooperation does the innovation ecosystem begin to emerge. We further reveal how enabling and governing mechanisms legitimize the innovation ecosystem, facilitate its emergence, and direct its evolution trajectory. Hence, we extend research that has centered on subsequent phases of evolution and explain how actors interact to facilitate the emergence of the ecosystem following technological discovery. Our study contributes to strategy research on interfirm coopetition by applying this concept to government and university actors, and by alluding to its multiple facets: identity, direction, administration, and resources. We also complement innovation research on the post-formation dynamics of ecosystems by providing insights into the missing link between technological discovery and the creation of an innovation ecosystem that brings together stakeholders to commercialize that technology. 相似文献
62.
近年来,日益拥挤的城市道路对人们的出行效率产生了严重的影响.文本以上海为例,根据上海市的交通拥挤状况与市民的出行情况,采用“机会成本法”,结合最新可得数据,对上海市外环线以内中心城区的道路拥挤相关成本进行实证研究与测算,结论为:2009年,上海市中心城道路拥挤所导致额外耗时的经济成本为115.65亿元/年. 相似文献
63.
64.
新中国初期,中国共产党对城市基层社会组织进行了大规模的重构,并且取得了巨大成功.通过对新中国初期城市各类基层社会组织重构进程的历史考察,我们可以得到以下几方面的启示:强势政权的建立、政权组织的下移与城市基层政权组织的强化是当时成功实现城市基层社会组织重构的基础与前提;城市基层社会的全面组织化是当时实现城市社会整合的强大... 相似文献
65.
《Telecommunications Policy》2017,41(10):931-947
Over the past two decades, China’s telecommunications industry has witnessed drastic market reform, steadfast institutionalization, and volatile technological changes, which have driven exponential industry expansion. This paper offers an updated longitudinal and comprehensive review on this reform process on the eve of 5G (the fifth generation mobile communications networks). First, the paper segments the two-decade reform crusade into discernible phases, each of which is embedded with different policy drives. These reform phases are then pattern-matched against the subtleties of the overall institutional, technological, and market backdrop. A series of policy issues are identified through a systematic examination of industry phenomena over the reform course. Finally, the status of research is assessed regarding China’s telecom industry and reform, based on which, knowledge gaps are identified and future research agenda suggested. Conclusions are made regarding future reform and research imperatives. The paper advances the understanding of China’s telecom reform, development, and the underlying policy issues. It updates and expands previous works on similar topics. Overall, this study provides important theoretical, managerial, and policy implications. 相似文献
66.
城市建设管理中环境问题的思考 总被引：1，自引：0，他引：1
可持续发展应该成为城市建筑设管理的重要战略，通过分析传统的城市建筑设管理观念，我们应该在更深层次上深化对城市管理与生态意识，环境规划之间关系的认识，从而达到城市管理现代化的目标。 相似文献
67.
We consider firms in the context of their business ecosystems and explore how differences in the ways in which firms are organized with respect to complementary activities affect their decision to invest in new technologies. We argue that, in addition to creating differences in incentives and bureaucratic costs, firm‐complementor organizational form plays an important role in the firm's ability to coordinate accompanying changes in complementary activities so as to shape the benefits from investing early in the new technology. We test our predictions in the U.S. healthcare industry from 1995–2006. The study makes a strong case for viewing firms' competitive strategies in the context of their business ecosystems and for the existence of an important link between firms' coordination choices and their strategic investments. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
68.
随着经济社会的发展,城乡关系与区域经济空间结构不断从低级向高级阶段演化.长期以来,我国三次产业之问与城乡之间的非有效联动发展导致了城乡经济空间的二元割裂,而这又进一步制约了产业的升级与区域经济空间结构的优化.现阶段,三产互动已成为提升产业现代化的重要途径,以此为基础和重要内涵的城乡统筹发展模式在有效促进城市经济空间从大... 相似文献
69.
基于用地效率分析的城市区域空间结构极化模型及空间发展战略 总被引：2，自引：0，他引：2
不同规模的城市其用地效率具有一定的差异性.本文通过对中国660余个不同规模城市的用地效率分析,在总结和分析了传统城市区域空间结构基本理论和模型的基础上,提出基于城市用地效率分析的城市区域空间结构极化模型.通过理论与实证分析表明,城市发展的方向一极是大型化,发展成为特大城市或超大城市(人口100万-400万);另一极是小... 相似文献
70.
Andrew Harris Susan Moore 《International journal of urban and regional research》2013,37(5):1499-1509
This symposium creates and stimulates new dialogue and cross‐disciplinary exchange between planning theorists and geographers in researching the transfer of urban policy and planning models, ideas and techniques. The symposium challenges a restricted historical focus in much of the emerging geographical literature on urban policy mobilities by drawing on a rich tradition within planning history of exploring and documenting the trans‐urban travel of planning ideas and models over the last 150 years. It is argued that this longer‐term perspective is required to highlight important historical continuities and institutional legacies to contemporary urban policy circuits and pathways and to question what is particularly new, distinct and innovative about an intensification in the travel of urban ideas, plans and policies over the past decade — and the accompanying scholarly interest in them. The symposium also uses the emphasis on particular details and specific experiences within planning histories to foreground and develop approaches, particularly from recent geographical scholarship, that investigate the contingent and embodied practices and wider epistemic contexts that enable — or hinder — contemporary policy transfer. 相似文献