Diffusion and Innovation of New Technologies under Skill Heterogeneity

This article presents a model of innovation and diffusion of machines which embody a new technology. Users of the machines are heterogenous in their skill level. Skilled machine-users adopt new machines first, while unskilled users wait until machines become more user-friendly and reliable. The improvement of machines is the engine of diffusion, and it is carried out by the monopolist machine producer. The speed of diffusion is affected by the skill distribution in the economy. At any point in time, the machine producer can innovate a new generation of machines. The timing of innovation is also influenced by the skill distribution.     

农地利用技术创新的类型与模式研究

农地利用技术是一个多层次的体系，它能在扩大耕地面积、提高土地利用率和耕地质量等多方面发挥重要作用。通过对“市场机制自发作用下的技术选择”和“政府引导下的技术选择”两种现实模式的探讨，认为技术创新具有外部性，土地利用更是具有明显的“外溢效应”，加上我国农业比较利益偏低和农地使用权流转市场发育不全带来的农地价格扭曲，常造成市场机制下技术创新的方向与资源稀缺状况不相符合的现象，从而带来资源配置的低效率。因此，适当的政府引导是必要的，也是有效的。     

Racing in two dimensions

In this paper we study an industry in which there is an ongoing sequence of R&D races between two firms. Firms are engaged in product innovation. Products are horizontally and vertically differentiated. There are two key characteristics/dimensions to products, and the level at which these are embodied in products can be increased by R&D. At each time firms can spend R&D on improving their product in one or both dimensions. We allow the possibility of economies scope — so R&D undertaken in one dimension can spillover to the other. The question we are interested in is whether a firm that is ahead in a single dimension but behind in another will focus all its R&D effort in the area in which it is ahead (product specialisation), or whether it will try to do R&D in both dimensions in the hope that it might get ahead in both and end up with a superproduct that dominates in both characteristics. The outcome of this R&D competition determines a Markov transition probability matrix determining the evolution of the industry. We show that when the R&D technology is characterized by constant returns then the only steady-state outcome is one in which the economy stays forever in a position in which one firm produces a super-product and the other gives up doing R&D altogether. This outcome is unaffected by the degree of economies of scope. When the R&D technology is characterised by decreasing returns, then the industry will visit all states and so will exhibit both product specialisation and superproduct dominance at various times. Now the extent of economies of scope matters and we show that the greater the extent of economies of scope, the less likely is the industry to exhibit product dominance, and the more likely it is to exhibit product specialisation.     

原始创新与区域发展

原始创新是我国新世纪科技发展的战略新思想.采取定性与定量相结合的方法,着重对区域进行原始创新的可行性和显著效应进行了深入探讨,并提出了相应的发展策略.     

制约我国中小企业自主创新的法律因素及立法建议

改革开放以来，我国中小企业数量激增，涉及行业不断扩大，同时现行法律法规中对中小企业自主创新的诸多制约因素也日益凸现。剔除这些制约因素，构建一个和谐的法律支撑体系，是我国中小企业可持续、健康快速发展的保证。     

技术创新项目风险分析与综合评价

文章分析了企业技术创新项目的风险因素,在此基础上设置了风险评价指标体系,建立了模糊评判模型,对企业技术创新风险进行了科学评价,并能定量地衡量企业关于某个项目的技术创新风险大小,为企业技术创新决策和采取风险控制措施提供了依据。     

我国金融物流模式探析

“十一五”规划纲要明确提出：要“大力发展现代物流业.”本文根据国外金融物流比较成功的经验,以及我国目前第三方物流的现状,创新地提出了我国第三方物流发展金融物流模式,从而有效地降低物流成本、加速资金周转、促进我国物流企业的发展.     

中国汽车产业自主创新战略研究

自主创新战略已经成为新时期中国汽车产业发展的核心战略。在世界汽车产业全球化的背景下,中国汽车产业的自主创新既有机遇又有威胁,既有优势又有劣势。中国汽车产业要成功实施自主创新战略,就要在技术创新、组织创新、管理创新等方面采取行之有效的措施,才能真正实现从汽车大国向汽车强国转变的战略目标。     

中外管理者收购融资的比较与启示

国资委、财政部正式公布了《企业国有产权向管理层转让暂行规定》,对MBO的实施范围作了界定,对实施主体提出了规范化要求。文章比较研究了国内外MBO不同的融资模式,认为我国企业管理者收购受有关法律和金融制度的限制存在融资工具和融资机构单一,融资渠道和退出渠道不畅等问题,其潜在的法律和金融风险不可忽视。最后,笔者对改进我国管理者收购融资提出了新的政策建议。     

上市公司过度融资行为及其治理研究

上市公司过度融资行为,严重损害了债权人和中小股东的利益,扰乱了证券市场的定价和运行秩序,阻碍了我国证券市场的健康发展。本文通过分析我国上市公司过度融资行为的负面影响和经济成因,提出相应的治理措施。