作者: Ue-Seong Jeong , Sang-June Park
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摘要: The coupon issued by Korail (Korail's coupon) is characterized the properties such as a discount rate, an issuing region, selling and practically discounted rate. purpose of this study to investigate their impacts on redemption time using Log-Normal distribution, derive managerial implications for improving Korail's program. result showed that was shorter or longer depending