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双寡头中有一个企业从事成本降低型研究与发展 (R&D) .创新企业可以在进行 R&D之前或之后收购另一企业 ,分别称为事前收购和事后收购 .本文首先对事前收购和事后收购两种策略进行对比分析 .结果表明 ,当 R&D溢出较大时创新企业将选择事前收购 ,而溢出较小时将选择事后收购 .值得注意的是 ,创新企业选择的收购策略同时也使消费者剩余和 R&D投资达到最大 .最后将事前和事后收购分别与不收购进行对比 .不收购总不是创新企业的最优策略 ,但在有些情况下 ,不收购时的 R&D投资和消费者剩余却是最大的
One of the duopoly companies is engaged in cost reduction research and development (R & D). Innovative firms may acquire another firm before or after conducting R & D, known as ex ante and ex post acquisitions, respectively.This paper begins with an analysis of ex ante and ex post acquisitions Strategy.The results show that when the R & D spillovers, the innovators will choose to buy in advance, and after the spillover, they will choose to buy afterwards.It is noteworthy that the innovative strategies chosen by the enterprises also make the consumer surplus and R & D investment Reaching the maximum.Finally, ex-ante and ex-post acquisitions were compared respectively with non-acquisitions.Non-acquisition is not always the optimal strategy for innovative enterprises, but in some cases, R & D investment and consumer surplus without acquisition are the largest