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1.
The performance of service industries in Canada has been lower than that of good industries over the last four decades, with noticeable exceptions such as for railways and telecommunication carriers. Service industries were less economically (and technically) efficient in that they generated less output value (quantity) per hour worked (level and growth) or per combined unit of labour and capital (multifactor productivity growth) than good industries. The relative output price of services declined slightly over time compared with goods. At the disaggregated level, changing relative output prices were substantial and proved to be an important factor explaining the relative satisfactory economic performance of many service industries despite their low technical performance. Nevertheless, the output share of service industries increased over that period, sustained, mainly, by the growing recourse of all firms to outsourcing of services.  相似文献   
2.
随着教育的发展 ,传统的教学方法已不能满足时代的需要 ,亟待运用现代教育技术手段 ,特别是多媒体的教学形式进入课堂 ,以发挥其特有的功能来提高学习效率。本文浅淡了如何在车辆工程教学中运用计算机多媒体的图、文、声、像并茂的特点 ,有效的激发学生的学习兴趣。  相似文献   
3.
A necessary criterion for a performance measure in corporate governance is the degree to which it mirrors how well the management succeeds in maximizing firm value. Such a performance measure is marginal q which links changes in firm value to the investments undertaken by the management. Empirical studies of investment and performance based on marginal q have demonstrated the usefulness of this measure. Most research however, has mainly focused on long-term performance. This paper takes a short-term perspective and, based on the marginal q-theory, considers how firms’ market values change in the extreme stock price cycle of a stock market bubble. Using a data set of listed Swedish corporations we find an anomaly in form of a new industry specific effect that, in addition to investment, explains changes in firm value.
Per-Olof BjuggrenEmail:
  相似文献   
4.
    
We characterize strictly arbitrage-free markets of European options where only a discrete set of options is traded. We then construct martingales which reprice all given options and which are ‘most expensive’ among all martingales with this property. We also present algorithms to adjust real-life market data and to construct expensive martingales while taking into account additional ‘weak’ information: estimated prices of more exotic products such as, for example, forward started options.  相似文献   
5.
我国金融发展对国际贸易的影响机理阐释及经验证据   总被引:6,自引:0,他引:6  
在传统贸易比较优势逐渐丧失的背景下,实现外贸可持续发展战略给金融业提出了更高的要求,正确认识我国金融发展对外贸的作用机理和效应有助于相应的政策调适。本文的理论分析表明:金融发展主要通过金融制度、技术创新、资源配置、分散风险和汇率调整等途径来影响国际贸易;经验分析表明经济货币化、经济金融化、汇率贬值因素都对我国外贸发展起到了重要的促进作用,而经济证券化因素则不然。从静态的角度来看,经济证券化因素并没有促进我国外贸的发展,但从动态的角度来看,经济证券化因素仍会对我国外贸产生积极的影响。  相似文献   
6.
白洋港作为长江三峡的核心内陆港,是工业输出港、翻坝转运港和西部出海港,主要服务于白洋工业园区,担当西北地区物流陆水联运的作用。为实现白洋港铁水联运的无缝衔接,在阐述白洋港铁水联运模式及作业流程的基础上,针对白洋港既有铁水联运模式存在的问题,提出白洋港铁水联运车船直取模式,从车船直取模式设施布局及作业流程进行分析,达到压缩无效作业时间、提高白洋港铁水联运效率、释放技术站作业能力等效果,实现白洋港铁水联运效率的提升。  相似文献   
7.
通过概述国内外学者关于运输外部性内部化政策、运输外部性评估、运输外部成本计算方法等方面的研究成果,阐述了美国及欧盟寻求实现运输外部成本内部化的政策和方法。针对我国铁路基础设施噪声污染问题,在分析铁路噪声的产生、传播及估算的基础上,研究提出利用边际成本定价方法计算铁路噪声边际成本。噪声定价方法还有支付意愿法、冲击路径法等,这些定价方法及其实证量化还有待进一步深入研究。  相似文献   
8.
研发投入与财政补贴是影响企业成长的内在因素和外在条件。选取我国军工上市企业2011-2017年面板数据,运用系统广义矩估计方法实证分析研发投入及财政补贴调节效应下研发投入与企业成长的内在联系。结果发现,研发投入强度对我国军工企业成长具有显著滞后性推动作用;在财政补贴调节效应下,研发投入对企业成长的激励作用有所“迷失”。研究结论为我国军工上市企业研发活动影响企业成长提供了新证据,为研究军工企业研发活动投入经济后果及如何适应军民融合进程拓展了新视角。  相似文献   
9.
    
Objective: Epilepsy surgery is one of the most effective treatments in modern medicine. Yet, it remains largely under-utilized, in spite of its proven efficacy. The referrals for epilepsy surgery are often delayed until it is too late to prevent the detrimental psychosocial effects of refractory seizures. The reluctance towards epilepsy surgery is influenced by the perceived risks of the procedure by practitioners and patients. This review discusses how, in general decision-making processes, one faces a natural tendency towards emphasizing the risks of the most immediate and operational decision (surgery), at times without contrasting these risks with the alternative (uncontrolled epilepsy).

Methods: In the field of economics, this bias is well recognized and can be overcome through marginal analysis, formally defined as focusing on incremental changes as opposed to absolute levels.

Results: Regarding epilepsy surgery, the risks and benefits of surgery are considered separately from the risks of uncontrolled epilepsy. For instance, even though surgery carries an ~0.1–0.5% risk of perioperative mortality, the chance of sudden unexpected death with refractory epilepsy can be as high as 0.6–0.9% per year. It is suggested that the inadequate way of phrasing clinical questions can be a crucial contributing factor for the under-utilization of epilepsy surgery.

Significance: It is proposed that examining decision-making for epilepsy surgery in the context of marginal analysis may enable providers and patients to make more accurate informed decisions.  相似文献   
10.
无所不在的马太效应对高职高专院校办刊工作的各个方面都有着广泛而深远的影响,并逐步呈现出劣势积累的态势。本文着眼于高职高专院校学报办刊工作的现状,就马太效应对稿源、对编辑工作、对审稿活动、对读者的影响等进行重点阐述,并对如何弱化马太效应消极影响提出了若干应对措施。  相似文献   
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