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   347篇
  免费   11篇
财政金融   41篇
工业经济   21篇
计划管理   63篇
经济学   76篇
综合类   2篇
运输经济   4篇
旅游经济   5篇
贸易经济   47篇
农业经济   23篇
经济概况   62篇
邮电经济   14篇
  2021年   4篇
  2020年   5篇
  2019年   7篇
  2018年   7篇
  2017年   11篇
  2016年   11篇
  2015年   9篇
  2014年   6篇
  2013年   36篇
  2012年   13篇
  2011年   9篇
  2010年   9篇
  2009年   8篇
  2008年   16篇
  2007年   5篇
  2006年   10篇
  2005年   8篇
  2004年   13篇
  2003年   12篇
  2002年   13篇
  2001年   5篇
  2000年   3篇
  1999年   11篇
  1998年   3篇
  1997年   6篇
  1995年   6篇
  1994年   7篇
  1993年   4篇
  1989年   2篇
  1988年   4篇
  1987年   3篇
  1986年   3篇
  1985年   7篇
  1984年   3篇
  1983年   4篇
  1982年   4篇
  1981年   6篇
  1980年   6篇
  1979年   4篇
  1978年   5篇
  1977年   6篇
  1976年   3篇
  1975年   4篇
  1974年   6篇
  1973年   3篇
  1972年   2篇
  1971年   2篇
  1970年   2篇
  1966年   3篇
  1959年   4篇
排序方式: 共有358条查询结果,搜索用时 468 毫秒
1.
This article examines the impact of a specific aspect of air quality—visibility, or the ability to clearly see distant objects—on housing values. Our analysis is based on a data set constructed by matching residential housing sales data from the Los Angeles Metropolitan Area for the period 1980 through 1995 with visibility and other air pollution data and other characteristics. We find that visibility differences are capitalized into housing values, producing a measurable hedonic price gradient. The time-series design facilitates an estimate of the demand for visibility that we use to calculate the benefits of changes in visual range.  相似文献   
2.
Editorial     
  相似文献   
3.
4.
The role of entrepreneurs in stimulating growth in the small business economy has received significant interest in the last three decades. This growing interest is prompted, in part, by the government’s assumption that the establishment and expansion of existing small firms could be greatly enhanced by the promotion of entrepreneurial education programmes in colleges and universities. Whilst there has been significant interest in the role, type and effect of entrepreneurs in the economy, few studies have examined the effect of entrepreneurial programmes on the progression of an idea through to commercialisation. This is because such research, whilst seemingly desirable, is problematic. Evidence can be gleaned through the development of suitable conceptual frameworks and methods, to assess the role and impact of entrepreneurial programmes on the commercialisation of products or processes, and the enhancement of entrepreneurial capabilities. To address this problem, the research will examine different approaches and frameworks that have been developed and applied hitherto. The objective of this will be to highlight the difficulties in assessing the motivations, cognitive and behavioural changes of entrepreneurs. Also, the research will demonstrate the need to undertake adequate controls, which illustrate possible improvement in entrepreneurial capabilities, networks, and credibility in comparison to students that embarked on courses without entrepreneurial elements. The process will confine itself to business development within the higher education (HEI) context. The MSEC has as its remit to provide opportunity, education, awareness and training to foster entrepreneurship within science and engineering departments across four universities in Greater Manchester. This setting will provide a unique situation in which to investigate the development of germinal technology businesses from the inception of an idea to the point of incubation, prototype development and investment. There is a requirement to understand the needs of the virgin entrepreneur, possible obstacles to commercialisation and the process of new venture creation. The methodology to be adopted has been identified, and forges new ground on combining positivist and phenomenological paradigms. The multi–paradigm approach supports the use of critical incident technique to reveal greater insights in to the personal and cognitive development of virginal entrepreneurs, the suitability of enterprise programmes to act as catalysts for venture creation, and their role in supporting technology transfer. The research will not only confine itself to examining undergraduate and postgraduate projects within MSEC’s business creation unit, but will also continue to assess the experience of entrepreneurs’ when they leave the programme. The research also documents the economic contribution of the programme, in terms of generation of new technology–based firms and the impact of entrepreneurs joining established small firms. Ultimately the aim is to build a long–term picture of the role of enterprise programmes in HEIs that will inform policy and practice.  相似文献   
5.
6.
7.
The amount of customisation to an enterprise resource planning (ERP) system has always been a major concern in the context of the implementation. This article focuses on the phase of maintenance and presents an empirical study about the relationship between the amount of customising and the resulting support effort. We establish a structural equation modelling model that explains support effort using customisation effort, organisational characteristics and scope of implementation. The findings using data from an ERP provider show that there is a statistically significant effect: with an increasing amount of customisation, the quantity of telephone calls to support increases, as well as the duration of each call.  相似文献   
8.
9.
Previous research suggests that the distinctive nature of family firms, including both specific advantages and disadvantages related to their particular agency situation, influences innovation activities. Most studies, however, view family firms as homogeneous entities and thus neglect the heterogeneity of family firms when comparing them with nonfamily firms. One important factor of this firm heterogeneity is family influence in terms of ownership, management, and governance. A data set of large German publicly traded firms between 2000 and 2009 is used to test how these three dimensions of family influence predict innovation input and output. The results show that family participation in management and governance has a negative impact on innovation input and a positive influence on innovation output. This suggests that family members are risk averse and reluctant to invest in innovation, but at the same time do so more effectively.  相似文献   
10.
This study examines the impact of family management on digital transformation with specific regard to the firm’s development of Internet of Things (IoT) innovations. Drawing on the distinctive characteristics of firms with family managers, such as the focus on family‐centered noneconomic goals, long tenure, emotional ties to existing assets, and rigid mental models, it hypothesizes that increasing family involvement in the top management team is negatively related to the development of IoT innovations that are distant from a firm’s existing technology base (i.e., exploratory IoT innovations) compared to exploitative IoT innovations. Further, the study proposes that the firm’s degree of technological diversification, especially in unrelated forms, reinforces this relationship. The longitudinal analysis between 2002 and 2013 on a sample of publicly traded German firms allows us to test our hypotheses from the beginning of the emergence of the IoT concept. Our findings show that due to the particular characteristics of their managers, family‐managed firms do not welcome the risks related to exploratory IoT innovations, and the benefit of risk diversification from technological diversification is lower than the cost of abandoning family‐centered goals. As our results imply that the involvement of family managers constrains the development of exploratory IoT innovation, the top management team composition in firms that intend to be at the forefront of the digital transformation should be accurately designed by avoiding a high proportion of family members.  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