中文摘要：

针对现有对合作新产品开发投入的研究常常忽略投入资源的多样性，考虑同时投入知识和资金的情况下，合作参与者的最优投入决策问题．通过构建Stackelberg博弈模型，分别讨论了只有资金投入和同时含有资金与知识投入时，领导者和跟随者的投入情况，并对比研究了两种情况下合作双方投入决策的异同．研究表明：不同资源投入时，合作形成条件亦不相同，即只有在领导者收益比例更大时，领导者才可能考虑资金和知识的同时投入；通过改变资金投入量、知识投入量和研发努力程度，可调整知识溢出水平以促使合作开发成功．

英文摘要：

Existing researches always omit the input opment investments. This article, by taking both the resource diversity in the collaborative new product develinput of capital and knowledge into consideration, discusses the participants＇ optimal investment decisions. We build a Stackelberg model and discusses the leader and the follower＇ s investment decisions when the input only contains capital and when the imputs also contain both capital and knowledge respectively. Then the paper compares the similarities and differences between the partners investment decisions in the two cases. We found that with different resources inputs, cooperations need different conditions, namely, only when the leader＇ s earnings proportion is greater than the follower＇ s, is it possible to consider inputting both capital and knowledge ; the level of knowledge spillovers, which can stimulate the success of cooperative development, can be improved by changing the amount of capital investment, knowledge inputs and R＆D effort extent.