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中文摘要：
在开放经济的Ramsey增长模型中，考虑到把代理人的多元化消费偏好纳入国际商品贸易，认为代理人不仅消费国内消费品，同时进口国外产品进行消费．提供了经济增长局部不确定性产生的一个充分条件：当非交易品部门存在适度的特定部门外部性，并且该部门总的外部性水平高于交易品部门时，经济增长存在收敛于惟一稳态的均衡路径的连续统；同时采用合理参数值进行经济校准，数值模拟证实了理论分析结果．
英文摘要：
This paper considers agents＇ preference diversification and incorporates international goods trade into the Ramsey growth model of open economy. Agents not only consume domestic goods, but also import foreign goods for consumption. A sufficient condition is presented for the economy to exhibit the growth indeterminacy. If there exist the mild sector-specific externalities in the non-tradable sector and moreover the overall level of externalities in this sector is more than that of tradable goods sector, then the economic growth may own a continuum of trajectories converging to the sole balanced growth path （BGP） so that the economy exhibits local indeterminacy. In the meantime the economic calibrate with feasible parameter values is implemented and simulation results illustrate theoretical findings.
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Double-edged effects of the technology gap and technology spillovers: Evidence from the Chinese indu
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