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101.
102.
一、租房券在我国实施的可行性 1.租房券的由来租房券本身是一种代替现金结算的货币形式,优点是既能流通又能保持专用特性,准确资助到住房需要且不会被转向其他消费。 相似文献
103.
基于生物种理论的生态工业园区模式 总被引:3,自引:1,他引:3
生态工业园区是生态学的思想在工业中的应用。根据企业在生态工业园区中的地位和作用,将生态工业园区分为关键型生态工业园区、优势型生态工业园区和伴生型生态工业园区3种模式,并对这3种生态工业园模式进行了比较。 相似文献
104.
105.
研究了共性技术的R&D竞争、R&D卡特尔、RJV(ResearchJointVenture)竞争3种基本研发组织模式;在考虑投入溢出和成果溢出共存、溢出总量随时间T变化的基础上,引入研发风险率函数,通过对各组织模式的生产者剩余、消费者剩余和R&D投资率进行比较,总结出更适合共性技术研发和扩散的组织模式。结果表明:市场机制下,企业不一定会选择RJV;从社会福利角度,RJV产生的社会剩余大于R&D卡特尔和R&D竞争模式的社会剩余;为使社会福利最大化,政府应引导企业形成RJV。 相似文献
106.
基于技术创新模式的我国风电装备制造业创新能力分析 总被引:1,自引:0,他引:1
全球风电市场的发展为我国风电设备制造业的发展提供了机遇和有利条件。分析了我国风电设备制造业的发展现状,对该产业所采用的技术创新方法进行了分类,归结为模仿创新、合作创新和自主创新3种模式。基于此创新模式分类,绘制了我国主要风电设备整机制造企业的技术能力演变路线图,总结了技术创新模式对企业创新能力提升的影响,并指出模仿创新模式和合作创新模式已经不能满足我国风电设备制造业发展的需要,我国风电设备制造业只有在积极引进消化吸收国际先进技术的同时,通过自主创新,提高技术创新能力,开发更多具有核心技术和自主知识产权的产品,才能抓住发展机遇,走出困境,做大做强。 相似文献
107.
Haozhen Zhang Jianwei Zhong Cédric de Chardon 《The Canadian journal of economics》2020,53(4):1642-1662
Life-cycle direct public fiscal contributions and transfers are studied using longitudinal income tax data from 1982 to 2016 and administrative files for immigrants landed in Canada from 1980 to 2016. Relative to a comparison group comprising the Canadian-born and immigrants landed before 1980, immigrants since 1980 have a lower average net direct fiscal contribution (NDFC) during their working years due to their lower taxes and social security contributions but a higher average NDFC after 65 years of age because of reduced public pension eligibility and entitlement. Immigrants who landed at younger than 19 years old have much higher direct fiscal contributions than other age-at-arrival groups and reach their peak of contributions around 10 years earlier in life than other age-at-arrival groups. Immigrants whose age at arrival is above 65 have a less negative average NDFC than other age-at-arrival groups over the above-65 life cycle. These life-cycle age𠄁at-arrival trajectories are stable for immigrants in different landing cohorts. We apply the life-cycle estimates to project the present discounted value of lifetime NDFCs for immigrants who landed in 2016. For each landing age group, refugees and family class immigrants have negative or zero average present values of life-cycle NDFCs, much below that of economic immigrants. 相似文献
108.
回顾了单层次(即微观及宏观层次)的责任制研究,梳理了现有的多层次责任制研究,重点探讨了国外学者提出的多层次责任制研究模型。最后指出现有研究存在的不足,并展望了未来的研究方向。 相似文献
109.
This paper estimates information stickiness with regard to inflation expectations in the United States and the Eurozone for the 1981/06–2015/12 and 1998/Q4–2015/Q2 periods, respectively, and further investigates whether such information stickiness is state-dependent. Based on a bootstrap sub-sample rolling-window estimation, we find that information stickiness varies over time, which contradicts the strict time dependency implied under sticky-information theory. We provide evidence that information stickiness depends on inflation volatility, which indicates that information stickiness is state-dependent and that it has a time trend. Using a threshold model, we estimate structural changes in the state-dependence and time-trend of information stickiness. The results show that information stickiness has been more dependent on inflation volatility and has had a higher time-trend in both regions following the 2008 financial crisis. 相似文献
110.
We examine the quantile serial dependence in crude oil prices based on the Linton and Whang’s quantile-based portmanteau test which we improved by means of quantile wild bootstrapping (QWB). Through Monte Carlo simulation, we find that the quantile wild bootstrap-based portmanteau test performs better than the bound testing procedure suggested by Linton and Whang. We apply the improved test to examine the efficiency of two crude oil markets – WTI and Brent. We also examine if the dependence is stable via rolling sample tests. Our results show that both WTI and Brent are serially dependent in all, except the median quantiles. These findings suggest that it may be misleading to examine the efficiency of crude oil markets in terms of mean (or median) returns only. These crude oil markets are relatively more serially dependent in non-median ranges. 相似文献