【毕业论文】存在易耗部件的耐用品垄断厂商策略研究论文.docVIP

存在易耗部件的耐用品垄断厂商策略研究 摘 要:本文依据一类特殊耐用品的使用特性，将该类耐用品分为耐用和易耗两个部分。研究了两阶段情况下存在易耗部件的耐用品垄断厂商的策略问题。结果表明:租赁纯策略是垄断厂商的最优选择;第一阶段的耐用品最优产量受到耐用品耐用度和第一阶段易耗部件耐用度的双重影响，但与第二阶段易耗部件耐用度无关;第二阶段耐用品的最优产量则受到耐用品耐用度、第一阶段易耗部件耐用度和第二阶段易耗部件耐用度的三重影响;第一阶段易耗部件的最优价格随耐用品耐用度的增加先递减后递增，而第二阶段易耗部件的最优价格与耐用品耐用度无关，各阶段易耗部件的最优价格只与同一阶段易耗部件的耐用度负相关。 关键词:耐用品;易耗部件;垄断厂商;策略 中图分类号:f224.32 文献标识码:a 文章编号:1003-5192(2012)01-0070-05 strategies for durable goods with easy-to-wear accessories monopolist gao yong-quan, tan de-qing, su hao (school of economics management, southwest jiaotong university, chengdu 610031, china) abstract:based on the use characteristic of one special kind of durable goods, we divided the durable goods into two parts-durable part and easy-to-wear accessories(ewas). we explore a two-stage model concerning on the strategies for the durable goods with easy-to-wear accessories monopolist. the results show that the pure leasing strategy is the monopolist’s optimal choice. the optimal output of durable goods of the first stage is affected by the durability of durable goods and the durability of ewas of the first stage, but has no relationship with the durability of ewas of the second stage. the optimal output of durable goods of the second stage is affected by the durability of durable goods, the durability of ewas of the first stage and the second stage too. the optimal price of ewas of the first phase, first decreased and then increased with the increment of the durability of durable goods, but the one of the second phase has no relationship with the durability of durable goods. the optimal price of ewas in every stage only has negative correlation with the durability of ewas in the same stage. key words:durable goods; ewas; monopolist; strategies 1 引言 作为现代产业组织理论的重要研究内容之一，国内外学者在耐用品的研究中已取得了较为系统的理论成果。如有关耐用品的耐用度、时间不一致性、计划废弃、二手市场、逆向选择等问题有着大量的研究成果。swan［1］在70年代初提出了“最优耐用度”理论，认为最优耐用度的选择与市场结构无关，厂商的垄断势力并不能对最优耐用度产生扭曲性影响。coase［2］研究了耐