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   5017篇
  免费   122篇
  国内免费   1篇
财政金融   852篇
工业经济   341篇
计划管理   779篇
经济学   1084篇
综合类   65篇
运输经济   27篇
旅游经济   63篇
贸易经济   759篇
农业经济   233篇
经济概况   934篇
邮电经济   3篇
  2021年   30篇
  2020年   64篇
  2019年   103篇
  2018年   119篇
  2017年   128篇
  2016年   118篇
  2015年   64篇
  2014年   122篇
  2013年   483篇
  2012年   147篇
  2011年   189篇
  2010年   151篇
  2009年   141篇
  2008年   139篇
  2007年   130篇
  2006年   113篇
  2005年   85篇
  2004年   85篇
  2003年   85篇
  2002年   84篇
  2001年   115篇
  2000年   104篇
  1999年   82篇
  1998年   99篇
  1997年   73篇
  1996年   70篇
  1995年   87篇
  1994年   57篇
  1993年   83篇
  1992年   74篇
  1991年   79篇
  1990年   71篇
  1989年   76篇
  1988年   66篇
  1987年   70篇
  1986年   74篇
  1985年   78篇
  1984年   89篇
  1983年   64篇
  1982年   70篇
  1981年   66篇
  1980年   76篇
  1979年   65篇
  1978年   46篇
  1977年   49篇
  1976年   39篇
  1975年   48篇
  1974年   33篇
  1973年   39篇
  1972年   33篇
排序方式: 共有5140条查询结果,搜索用时 781 毫秒
131.
To advance development and application of signaling theory in the new product preannouncement literature while seeking to resolve ambiguity regarding the influence of innovativeness on stock market return, the role of information quality is examined. Specifically, this study investigates the effect of innovativeness across low and high levels of information quality. The results, ascertained using event study methodology on a sample of 243 new product preannouncements collected over a nine‐year period, indicate that higher information quality increases the strength of the positive relationship between innovativeness and stock market return. The findings offer managers insight into what role information quality plays in new product preannouncements that can help their firms generate higher stock market return.  相似文献   
132.
The link between corporate social responsibility (CSR) and competitiveness has been examined mainly at the business level. The purpose of this paper is to improve conceptual understanding and provide empirical evidence on the link between CSR and competitiveness at the national level. We draw on an eclectic-synthetic framework of international economics, strategic management and CSR literatures to explore conceptually whether and how CSR can impact on the competitiveness of nations, and test our hypotheses empirically with a sample of 19 developed countries over a 6-year period. Our evidence suggests that CSR can make a significant positive contribution to national competitiveness, as measured by national living standards. We also find that countries with a relatively low innovation record can benefit more, as compared to highly innovative countries, by implementing nationwide CSR-based positioning strategies.  相似文献   
133.
Innovation is the engine of development for enterprises, and there is an increasing trend to adopt an open innovation strategy. However, how to manage external resources in an open, collaborative and complementary manner, and in a shared environment that will yield the greatest networking effects, it is a challenging task. Because there is no such a satisfactory model for an open innovation strategy that combine operational mechanisms with the management of, external resources. Thhis article tries to fill the gap by adopting a resource-based perspective to construct an overall open innovation (OOI) business model. In this model, external resources are classified as industrial and non-industrial entities, to enable the identification of the interaction methods between manufacturing enterprises and external resources. The management of external resources involved in a Technology Open Innovation (TOI) cycle is given particular attention that includes: 1) the classification of the external resources of a TOI, 2) the general mechanisms extracted to promote qualified resources in and unqualified resources out, and 3) a business model to conceptualize the collaboration between enterprises and external resources. A case study of TOI is also provided to empirically verify its feasibility. This paper contributes to the literature by providing an original operational model and mechanism design for an open innovation strategy that is capable of managing external resources effectively.  相似文献   
134.
The article has analyzed trends in applying advanced manufacturing technologies in Russia in 2005–2014. The dynamics of technical process structures in the context of applications has been considered. The dynamics of the age structure and the structure of technologies in use in annual terms by the place of acquiring has been assessed. The start-up, availability, and removal balance of technologies has been formed, the effective start-up level, and possible ways to improve the state statistical indicators of innovation development have been determined.  相似文献   
135.
136.
137.
The article presents a new mechanism for translating labor market’s needs to the vocational education system that promotes the provision of long-term personnel requirements within the framework of the implementation of competence-based educational programs.  相似文献   
138.
This study conducted a large-scale survey in Dhaka, Bangladesh; the survey involved 95 major hospitals, more than 3000 emergency room patients, and 2 of the largest ambulance operators. Currently, most ambulances are parked within the vicinity of hospitals and are either dispatched or fetched by the acquaintances of the patient on demand, resulting in lengthy round trips. Reducing the response time of ambulances would certainly improve the emergency service, and pre-positioning of the ambulances could be a solution to reducing the response time. This study used two approaches to address the problem. First, the location-allocation problem was solved to find the optimal number of ambulance locations by maximising the demand coverage. Second, separate location-allocation for the peak and off-peaks, using K-means clustering, was applied to systematically optimise the ambulance positioning in small clusters near demand points. These approaches could substantially improve the existing emergency response time. Distributing ambulances near demand points yielded greater improvements in response time than when the ambulances are stationed near hospitals.  相似文献   
139.
140.
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