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排序方式: 共有2727条查询结果,搜索用时 15 毫秒
21.
大学外语教学中的精读课,其教学效果直接影响学生们的学习质量。找到适合自己和学生们的教学方法,就一定会调动师生双方的积极性,做到教学相长,寓教于乐。 相似文献
22.
朱丹 《福建商业高等专科学校学报》2004,(5):22-22
现代企业竞争的焦点聚集在被称为企业的"第三利润源泉"的物流业上,加入WTO后,我国物流业面临着国外先进物流企业的巨大竞争压力.本文在分析中国物流业目前面临的问题的基础上,结合中国的实际,提出了中国物流业健康发展应采取的一系列切实可行的措施与对策. 相似文献
23.
杨丹 《河北经贸大学学报》2004,25(6):60-64
新股发行市场较小的市场厚度使得理论分析不仅要涉及一般的供给需求分析,还必须深入研究供给和需求的形成过程以及供求双方的相互作用。本文拟从博弈角度研究新股发行过程政府、发行公司、中介机构和投资者的行为特征和多主体博弈过程,分别从信息完全和信息不完全两个角度研究博弈过程和结果,以期对新股发行制度改革提供初步的理论分析基础。 相似文献
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26.
Mixed logit models represent a powerful discrete choice analytical model but require assumptions about the functional form
of the parameter distributions. The use of unbounded distributions, such as the normal distribution, may be regarded as unsuitable
where theory indicates that all are negatively affected by increases in an attribute, such as price. Bounded distributions
such as the triangular and log-normal are unable to model the case where a section of the population is indifferent towards
an attribute, while the remainder are negatively disposed toward it. Train and Sonnier’s bounded mixed logit model accommodates
these features and is employed in this paper. A censored normal and Johnson’s Sb distribution are used to model preferences in the UK for food attributes, including price and GM technology. Bi-modal distributions
are identified regarding GM food: some are unlikely to ever consume it, some are close to indifference and willing to consume
at relatively small discounts while the remainder are fairly unresponsive to further price reductions. 相似文献
27.
Economic reforms,efficiency and productivity in Chinese banking 总被引:1,自引:0,他引:1
This paper analyzes the impact of banking reforms on efficiency and total factor productivity (TFP) change in Chinese banking
industry. Using an input distance function, we find that joint-equity banks are more efficient than wholly state-owned banks
(WSOBs). Furthermore, both WSOBs and joint-equity banks are found to be operating slightly below their optimal size, suggesting
potential advantages in expansion of their businesses. Overall, TFP growth was 4.4% per annum for the sample period 1993–2002.
Joint-equity banks experienced much higher growth in TFP (5.5% per annum) compared to the WSOBs (1.4% per annum).
相似文献
28.
Should government subsidize R&D and does it matter how these subsidies are allocated? We examine these questions in a dynamic
model where R&D is described as sequential sampling from a distribution of new ideas. Successful discoveries affect future
available resources and incentives for further R&D. Consequently, there may be under-investment in R&D. We study the effect
of government interventions aimed at fostering growth through R&D. Calibrating the model with aggregate data from the Israeli
business sector allows us to quantitatively compare two forms of support resembling those actually used to encourage R&D in
the Israeli business sector: (i) an unrestricted subsidy that may be used at the recipients' discretion to finance R&D or
other investments, (ii) a subsidy earmarked by the government for R&D activities only. While there is no theoretical way to
determine which of the two subsidies will have a greater impact on search for new ideas and growth, we find that in the calibrated
economy both subsidies have a significant but similar impact on the economy's output and TFP growth rates. Accordingly, in
the case of the Israeli business sector, the incentives to conduct R&D were sufficiently strong, and no R&D-specific encouragement
was needed. However, a sensitivity analysis reveals that for economies characterized by other parameter values this result
may not be true.
Correspondence to: B. Bental 相似文献
29.
Individual bid functions display sensitivity to the strategic considerations inherent in first-price auctions. However, several formal models, including heterogeneous Nash equilibrium bidding models with constant relative risk aversion, perform quite poorly. 相似文献
30.
虚拟水及其在缓解区域水资源短缺中的应用研究 总被引:1,自引:1,他引:1
虚拟水是指生产商品和服务所需要的水资源数量。虚拟水战略是指贫水国家或地区通过贸易的方式从富水国家或地区购买水密集型农产品(粮食)来获得本地区水和粮食的安全。本文在综述前人对虚拟水研究的基础上,计算了2002年甘肃省及不同地区主要农产品虚拟水含量,并对甘肃省加强虚拟水贸易的战略进行了探讨。 相似文献