| 合约可观察性与异质产品横向兼并效应 |
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| 引用本文： | 刘莉,钟德强.合约可观察性与异质产品横向兼并效应[J].软科学,2006,20(5):25-29,34. |
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| 作者姓名： | 刘莉 钟德强 |
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| 作者单位： | 湖南工业大学,管理科学与工程研究所,湖南,株洲,412008 |
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| 摘 要： | 针对一部线性可观察性合约与不可观察性(保密)合约,比较分析了供应商、零售商横向兼并集中度提高对消费者福利的影响。结果表明:(1)当合约可观察时,供应商横向兼并对消费者产生不利影响,而零售商横向兼并对消费者产生的影响取决于产品替代性程度大小,若产品替代性程度较高,则将产生有利影响,反之将产生不利影响;(2)当合约不可观察时,供应商横向兼并一般将对零售商与消费者产生不利影响,而零售商横向兼并对消费者产生的影响取决于产品替代性程度大小,若产品替代性程度较大,则兼并将对消费者产生有利影响,否则将对消费者产生不利影响。
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| 关 键 词： | 供应商横向兼并 零售商横向兼并 可观察性合约 保密合约 产品替代性程度 |
| 文章编号： | 1001-8409（2006）05-0025-05 |
| 收稿时间： | 2006-03-28 |
| 修稿时间： | 2006-03-28 |
Observability of Contracts and Horizontal Merger Effects in Heterogeneous Products |
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| LIU Li,ZHONG De-qiang.Observability of Contracts and Horizontal Merger Effects in Heterogeneous Products[J].Soft Science,2006,20(5):25-29,34. |
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| Authors: | LIU Li ZHONG De-qiang |
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| Abstract: | Aimed at one-part linear observable contracts and unobservable(secret) contracts,the authors compare and analyze the effect of the increase of concentration of suppliers' and retailers' horizontal mergers on customers' welfare.The results show that,(1) Under observable contracts,suppliers' horizontal merger will have adverse impact on customers,while the impact of retailers' horizontal merger on customers depends on the degree of product substitution: if the degree of substitution is high,it will have favorable effect on customers,otherwise,it will have adverse impact on customers;(2) Under unobservable contracts,suppliers' horizontal merger generally will have unfavorable impacts on retailers and customers,while the effect of retailers' horizontal merger on customers depends on the degree of product substitution: if the degree of substitution is high,it will have favorable effect on customers,otherwise,it will have adverse impact on customers. |
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| Keywords: | suppliers' horizontal merger retailers' horizontal merger observable contracts secret contracts product substitution |
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