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   519篇
  免费   41篇
财政金融   96篇
工业经济   23篇
计划管理   90篇
经济学   144篇
综合类   8篇
运输经济   14篇
旅游经济   15篇
贸易经济   117篇
农业经济   6篇
经济概况   45篇
邮电经济   2篇
  2024年   5篇
  2023年   13篇
  2022年   3篇
  2021年   9篇
  2020年   17篇
  2019年   14篇
  2018年   48篇
  2017年   35篇
  2016年   43篇
  2015年   30篇
  2014年   26篇
  2013年   95篇
  2012年   29篇
  2011年   22篇
  2010年   22篇
  2009年   24篇
  2008年   16篇
  2007年   16篇
  2006年   5篇
  2005年   4篇
  2004年   13篇
  2003年   12篇
  2002年   6篇
  2001年   5篇
  2000年   7篇
  1999年   7篇
  1998年   5篇
  1997年   3篇
  1996年   1篇
  1995年   5篇
  1994年   3篇
  1993年   1篇
  1992年   3篇
  1989年   2篇
  1986年   1篇
  1984年   3篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1977年   1篇
  1976年   2篇
  1975年   1篇
排序方式: 共有560条查询结果,搜索用时 218 毫秒
81.
This article analyzes the strategic bilateral bidding behavior in the Spanish electricity wholesale market (OMEL). The collection of data includes information regarding weekly averages of spot prices, the quantity bid in the wholesale market, the quantities purchased in the wholesale market and sold in the open market, and the behavior of conduct parameters for the period from January 2002 to April 2007 for the four largest firms of the Spanish electricity market: Endesa, Iberdrola, Unión Fenosa and Hidrocantábrico. This article employs the New Empirical Industrial Organization approach. The empirical analysis was based on the autoregressive distributed lag approach to cointegration and on the Toda–Yamamoto Granger causality tests to validate the standard version of the theoretical formulation of the standard Cournot model, and its theoretical extension, to encompass the hypothesis of the presence of bid interdependence for electricity quantities sold and bought in the Spanish electricity wholesale market. The results of cointegration and causality analysis reinforce the empirical results of the extended Cournot model with the inclusion of the two main bidding variables that solved the optimization problem of profit maximization for each of the four firms analyzed.  相似文献   
82.
The article uses the elasticity of profits to marginal costs, as in Boone (Econ J 111:1245–1261, 2008b), to measure the degree of competition in the Portuguese economy in a period characterised by the reallocation of resources towards the non-tradable sector and the accumulation of macroeconomic imbalances. Using firm-level data for the period 2000–2009, we find that there is lower competition intensity in the non-tradable sector. The least competitive markets within this sector lay in professional services, network industries and segments of retail trade. We also find that reductions in competition intensity are relatively widespread in the economy, but in terms of sales, gross value added and employment they are more substantial in the non-tradable sector. Results suggest that some network industries and other services exhibit low and a declining competition intensity in the period under analysis. In addition, the article discusses the coherence of the profit elasticity with classic indicators of market power, such as the Herfindahl–Hirschman index and the price-cost margin, and find that in more than half of the markets there is an agreement in the dynamics of competition intensity.  相似文献   
83.
We examine how exchange rate regimes affect fiscal discipline by investigating European countries as they transitioned from flexible to fully fixed exchange rates under the Euro. We apply the synthetic control method to estimate, for each Eurozone country, its counterfactual budget stance under flexible rates. Our evidence strongly suggests that fixing exchange rates negatively impacted negatively fiscal discipline. However, effects were not homogeneous, as they were mediated by political factors. For example, countries where policymakers faced a longer political horizon and operated within a more cohesive political environment, managed to perform better in terms of fiscal discipline.  相似文献   
84.
This article studies the extent of corporate leverage and range of excessive debt of Slovenian firms during the recent financial crisis. Half of all firms (of those with some non-zero debt and at least one employee) are found to face an unsustainable debt-to-EBITDA leverage ratio beyond 4, accounting for almost 80% of total outstanding debt. Moreover, a good quarter of all firms experience debt-to-EBITDA ratios exceeding 10 and hold almost half of total aggregate net debt. We then examine how this financial distress affects firm performance in terms of productivity, employment, exports, investment and survival. We find that, while less important during the good times (pre-recession period), lack of firms’ financial soundness during the period of financial distress becomes a critical factor constraining firm performance. The extent of financial leverage and ability to service the outstanding debt are shown to inhibit firms’ productivity growth as well as the dynamics of exports, employment and investment. Micro and small firms are found to suffer relatively more than larger firms from high leverage in terms of export and employment performance during the recession period.  相似文献   
85.
This paper examines effects of academic networks in a Stackelberg differential game between journal editors and authors. Authors choose research papers to maximize satisfaction, while editors determine research quality to maximize journal reputation. Verifying the system for stability, results show that academic networks neither affect the number of publications nor the quality of an author’s papers. Networks only affect the number of an author’s citations. Editors’ preferences for publishing an author because of her network membership seem irrelevant. This happens because editors compete to increase their journal’s reputation by publishing high quality papers. Consequently, there is little room for editorial bias. Further, increased journal competition has the potential to erode the citation gains. The equilibrium research quality is below the maximum possible quality. Increases in publication benefits are shown to leave citations unaffected, increase the number of publications, and decrease research quality. The results generally carry through when publishing markets tend to a monopoly.  相似文献   
86.
An example is given in which agents agree to disagree in a countable space of equiprobable states of nature. Even in this unorthodox setting, if the sets of the information partitions are intervals, an agreement theorem holds. A result that describes the margin for disagreement is also obtained.  相似文献   
87.
Knowledge is increasingly perceived as a fulcral factor to company competitiveness. As the transfer of knowledge is one of the key functions of knowledge intensive business services (KIBS), this research seeks to analyse how the transfer of knowledge takes place between the higher education sector and KIBS type firms. The empirical results show that cooperation between KIBS and universities occurs irrespective of the typology (whether professional or technological in focus). We also empirically establish how geographic proximity is the factor bearing greatest influence over cooperation while such cooperation proves to have a positive impact on the company capacity to innovate. We furthermore find that this innovation capacity also drives a positive company financial performance.  相似文献   
88.
Wellbeing and flow in sample of male and female office workers   总被引:1,自引:0,他引:1  
The paper examines research into wellbeing and flow, considered as enjoyable challenging experiences. A questionnaire study is reported of the association between wellbeing in both work and leisure and flow in a sample of male and female office workers. Based on previous research it is hypothesized that flow is associated with wellbeing; flow is experienced more in work than in leisure; gender differences occur in the activities which give rise to flow. The results support all three hypotheses. The importance of flow for wellbeing is discussed, and a critique of the concept flow is presented. While the complex nature of the concept of quality of life is recognized, it is concluded that research into flow and wellbeing is important.  相似文献   
89.
Some tourist farms established in the Chinese province of Guangdong suffer from a dearth of farm management and a lack of awareness of environmental protection issues among visitors, leading to pollution problems in farm tourism. The study reported in this paper examined how the managers of two farms protect the natural environment using the setting factors of physical orientation, interactive exhibits and the presence of tour guides, following the mindfulness and mindlessness model. The findings of the study revealed that the quality of the natural environment in both farms was acceptable, indicating the effectiveness of the setting factors. However, it was found that some signs were discolored and broken, there were insufficient interactive exhibits, and no tour guide service was available for individual visitors. Based on these findings, some recommendations are offered for farm managers on how to protect the natural environment.  相似文献   
90.
This paper develops two novel methodologies for pricing and hedging European-style barrier option contracts under the jump to default extended constant elasticity of variance (JDCEV) model, namely: a stopping time approach based on the first passage time densities of the underlying asset price process through the barrier levels; and a static hedging portfolio approach in which the barrier option is replicated by a portfolio of plain-vanilla and binary options. In doing so, both valuation methodologies are extended to a more general set-up accommodating endogenous bankruptcy, time-dependent barriers and the commonly observed stylized facts of a positive link between default and equity volatility and of a negative link between volatility and stock price. The two proposed numerical methods are shown to be accurate, easy to implement and efficient under both the JDCEV model and the nested constant elasticity of variance model.  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