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송석우(Seokwoo Song),선종학(Jonghak Sun) 한국경영과학회 2011 經營 科學 Vol.28 No.3
The Internet has generated a number of online review sites where dissatisfied consumers can easily articulate their opinions and comments on products or services. Little attention, however, has been directed to investigating the relationship between negative electronic word-of-mouth (eWOM) and its critical determinants that affect consumers’ purchasing behaviors. This study attempts to explore the influence of the key determinants of consumers’ negative eWOM behaviors, including their social relationships online. The results show that tie strength is positively associated with the proposed determinants, such as information credibility, external search efforts, and product involvement. Further, we find that perceived risk plays a mediating role in the relationship between consumers’ intention to spread eWOM and its key determinants.
직조 및 장섬유 유리강화소재의 하이브리드 성형(프레스-사출성형)으로 제조된 자동차 범퍼 빔의 충돌성능 검증
이종욱(Jongwook Lee),김세훈(Sehoon Kim),김혁(Hyuk Kim),송석우(Seokwoo Song) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Most of plastic bumper beams are produced by GMT(Glass Mat reinforced Thermoplastics). However, impact energy absorption of GMT bumper beam is limited because glass fiber is oriented uni-direction. In order to improve the performance of bumper beam in terms of impact energy absorption, we used not only polypropylene but also impregnated glass fabric and long glass fiber. The hybrid process of press and injection molding is developed and resulted in reducing processing time of the bumper beam. To predict the impact performance of beam in the condition of KSR93, IIHS and RCAR, The commercial software, LS-DYNA v971 is applied and the experiments are carried out using real cart car impact test as well.