排序方式: 共有49条查询结果,搜索用时 234 毫秒
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厂商的密集性进入与产业链纵向关系治理——基于中国汽车产业的分析 总被引:1,自引:0,他引:1
随着产业进入管制的逐步放松,厂商的密集性进入不仅改变了产业链的横向市场结构,也为产业链纵向关系治理模式的重新选择创造条件.面对中国汽车产业发展的这一现状,本文在文献回顾的基础上,通过对一个连续古诺模型的分析,认为下游整车厂商的密集性进入将导致产业链的部分或完全分拆,其具体形式取决于初始状态和上游厂商的数量.最后,结合国际经验以及国内新近产业政策设计和汽车企业的策略实践辅以论证说明. 相似文献
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制造业产业聚集与纵向分离的实证研究 总被引:1,自引:0,他引:1
探讨中国的制造业地理集中程度与纵向分离程度的关系。利用整理所得的产业区域资料,发现产业集聚中心的纵向分离程度,比产业集聚中心外的区域的纵向分离程度要高;而比较地理集中的产业,其产业聚集中心内外纵向分工程度的差异水平,高于整体制造业与地理不集中产业的差异水平。同时也发现,当产业地理集中度随着邻近同产业、相关产业与其他产业的就业人数增加而提高时,纵向分离程度也会随着提高。实证的结果进一步论证了,产业的地理集中,可以降低厂商在市场上的交易成本,进而提高交易效率与产业纵向分离程度。 相似文献
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Iigo Herguera Praveen Kujal Emmanuel Petrakis 《International Journal of Industrial Organization》2000,18(8):133
In a vertical product differentiation model under Cournot competition both foreign and domestic firms respond by lowering their investment in long-run quality for a quantity restriction at, and in the neighborhood of, the free trade import level. Average quality increases only when the low-quality foreign firm faces a substantially restrictive quota/voluntary export restraint. The change in quality depends on whether the foreign firm is of high or low quality and upon the restrictiveness of the quota. The imposition of quantity restrictions has important strategic effects on the long-run choice of quality. 相似文献
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Existing theoretical literature predicts that geographic concentration encourages vertical disintegration of firms. Nevertheless, empirical evidence of this prediction is limited, especially in developing countries. Using data on manufacturing firms from China, this paper documents a positive correlation between geographic concentration and vertical disintegration. Additionally, this paper uses the instrumental variable approach to address the issue of endogeneity and finds that geographic concentration has a positive causal effect on vertical disintegration. 相似文献
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为提高玄武岩残积土的抗崩解性及其边坡水稳性,利用生物聚合物瓜尔胶改良玄武岩残积土。在干湿循环条件下开展不同掺量瓜尔胶改良玄武岩残积土的崩解试验,观察残积土崩解过程,并对残积土改良土崩解系数和平均崩解速率进行测定,分析瓜尔胶掺量及干湿循环次数对玄武岩残积土水稳性的影响。研究结果表明:瓜尔胶可有效增强玄武岩残积土的抗崩解性能,随着瓜尔胶掺量的增加,改良玄武岩残积土的崩解系数和平均崩解速率呈现先减小后增加的特点,在瓜尔胶掺量为1.0%时抗崩解性能最佳;瓜尔胶掺量一定时,改良玄武岩残积土的崩解系数和平均崩解速率随着干湿循环次数的增加呈现增长趋势,当干湿循环次数N=4时,土体崩解率为N=1时的8倍。由此可见,瓜尔胶作为一种新型、环保的残积土边坡防护材料,可有效提升玄武岩残积土的抗崩解性能。研究结果为生态环保处置玄武岩残积土提供了新的思路,可为玄武岩残积土地区边坡工程的绿色发展提供参考。 相似文献
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Since McCallum's (1995) finding of surprisingly high border effects on trade between the US and Canada, there have been a number of studies on other parts of the world, and improvements made to the gravity model to measure this effect accurately. This paper suggests some other modifications to the model, and applies it to a region of the world that presents a distinctly interesting case. Changes in border effects of formerly socialist countries in Central and East Europe, and countries in the former Soviet Union are analyzed during 1976–2002 at country and sectoral levels, and also with respect to blocs of countries. A discussion on cross-country variations in border effects follows the computations. 相似文献
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产业组织的垂直解体与网络化 总被引:33,自引:3,他引:33
本文提出20世纪80年代以来产业组织形态出现从垂直一体化向垂直解体发展的趋势,并对产业组织垂直解体的模式、特征以及垂直解体的空间发展进行了详细分析。本文认为,垂直解体后的企业并非简单地从科层回到市场,而是形成介于科层和市场之间的网络化关系。最后,作者对垂直解体和网络化对生产绩效、生产方式和国际分工的影响进行了分析。 相似文献