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111.
The paper compares various processes subordinated to the Wiener process tomodel the leptokurtic characteristics of index returns. Empirical analysisis performed on the Dow Jones and Nikkei 225 indexes. A good model to capturethe typical tail behaviour of these indexes turns out to be a long Studentt distributed one.  相似文献   
112.
In most developing countries of the world, large scale public food procurement and distribution systems (PFDS) have become too expensive for the country governments to support from their own resources. Despite high financial and administrative costs of the programs, the degree of seasonal price stabilization and price support achieved through the activities remain quite low. Using the Bangladesh PFDS as a case study, this research indicates that considerable improvements in price support can be achieved by providing credit to the farmers immediately after the harvest. If the government procurement is reduced by 50 per cent in Bangladesh, and providing 150 per cent of the cost of running PFDS as credit, Bangladesh can improve the farmers' income and achieve better stability of cereal prices at a cost less than one-third of the current costs of the PFDS.  相似文献   
113.
随机漫步理论认为股票的价格是不能预测的,许多实证检验的结果也支持了这一结论。但是,近年来均值回归理论对随机漫步理论提出了挑战。从长期来看,股票价格呈均值回归是必然的;均值回归具有不对称性;政府行为对股票的均值回归具有一定的影响。  相似文献   
114.
税收价格论对强化税收征管的现实意义   总被引:3,自引:0,他引:3  
税收价格论认为税收是纳税人为消费公共品而向政府支付的“价格”,税收征纳双方在本质上是平等的交换关系。借鉴税收价格论,应当以个人为基点,从利益交换关系的角度,赋予纳税人作为交换一方应有的权利。应在整个公共部门经济的全过程中体现税收本质上的平等交换关系,并以法律的形式予以确定和保护。引进税收价格论,对提供新的税收征管思路,强化税收征管工作,具有重要的现实意义。  相似文献   
115.
金融期货价格波动限制机制探讨   总被引:1,自引:0,他引:1  
金融期货价格稳定机制延缓了价格发现过程,并造成了流动性干扰,但从降低期货、现货交易总成本来讲,它还是利大于弊,因此设置价格波动限制是一种可行的政策,而且在期货、现货市场同时设定的效果最好。此外,从不同价格波动限制方式的影响来看,选择弹性涨跌幅限制可较好地发挥价格限制的好处,减小价格限制的不利影响。  相似文献   
116.
I investigate the effects of R&D progress on the dynamics of stock price volatility and the post announcement drift to provide insights into whether or not and how capital markets react to corporate R&D progress in the context of the biotech industry. I find both stock price volatility and the post announcement drift decrease in R&D progress. More importantly, the decrease is proportional to the increase in the drug development success rate driven by R&D progress. Findings suggest that R&D progress conveys useful risk-relevant information, and plays an important role in explaining stock price volatility change and market anomalies.  相似文献   
117.
通过购电成本结构分析,指出了当前发电计划编制及执行中存在的问题和当前发电计划编制对电网购电费的影响。重点研究了有关降低电网购电成本的方法及实证,并为政府价格相关部门提出创建节能型社会的政策建议。  相似文献   
118.
This essay surveys research about the value of individual members of boards of directors. When directors join or exit corporate boards, company stock prices respond, often in magnitudes of 1% of firm value or more. Related research shows that when a significant event impacts the stock price of one company, the effects are transmitted to other companies that share board members in common with the primary company. Share price reactions are sensitive to variables such as a director’s occupation, independence, and professional qualifications. Together, this evidence suggests that a well-functioning market for directors might already exist, making direct regulation unnecessary and possibly counter-productive.  相似文献   
119.
印花税下调在短期内对大盘股指产生显著影响,但这种影响随时间的推移而逐渐减弱;税率下调对沪市和深市单只股票具有冲击效应,个股产生正的超额收益;税率下调对两市的大盘波动性产生显著影响,刺激了"噪声交易者",在短期内产生了噪声效应。目前印花税仍然存在一些不足,建议:拓宽税基,改双向征税为单向征税,尽快开征股票交易税。  相似文献   
120.
George J. Staubus 《Abacus》2004,40(3):265-279
The two views to be addressed here are the Chambers/Sydney view that accepts only one measurement method—current net realizable price—and the Staubus/mainstream view that accepts several measurement methods in the same financial report. These two views became well-established in the literature of accounting in the 1960s and their proponents have clung tenaciously to their oft-criticized positions for some forty years. However commendable their original expositions may have been, their continuing existence does no credit to the small coterie of accountants now interested in theory.
This article is aimed at 'narrowing the areas of difference' between adherents to the two views by isolating fundamental bases for them and exposing the reasoning supporting their structures. In a nutshell, they differ in their objectives and they can be expected to survive unless their adherents agree on the objectives of financial reporting.  相似文献   
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