Earticle

초록

영어

The advent of smart phone in the telecommunication industry has rapidly changed a way of competition among companies. At the innovation of products and services are comparative advantages. In this study, we have explored the trajectory of innovation by comparing two representative smart phones; iPhone of Apple and Galaxy of Samsung. We measure the degree of innovativeness of products and services with abnormal return from an event study. In this study, we find that the trajectory of innovation of iPhone is steeper than that of Galaxy. We also find that the innovativeness of iPhone is not different from that of Galaxy, and the first model of iPhone has higher abnormal return than the subsequent models of iPhone, but we do not find the difference for Galaxy. Finally, we have evidence that the effect from product innovation is not different from service innovation, implying that firms’ activities of services are at least effective as the activities of new products.

목차

Abstract
 Introduction
 Literature Review
  The Trajectory of Innovation
  A Trough in New Products
  The Difference of Performance of Innovation
 Sample
 Methodology
  Event Definition
  Normal and abnormal returns
  Estimation Procedure
 Analysis
  Trajectory of Innovation and the Cause of a Trough
  Apple and Samsung
  Products and Services
 Discussions and Conclusions
  Implications
  Conclusions
 References

저자

• Jaeki Song [ Global Service Management, Sogang University ]
• Sangno Lee [ Rawls College of Business, Texas Tech University ]
• Yongjin Kim [ Global Service Management, Sogang University ]

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