플라스틱 광섬유를 이용한 수동형 방향성 결합기 제작 및 특성 평가

이은곤 연세대학교 대학원 2002 국내석사

플라스틱광섬유(Plastic Optical Fiber)를 사용한 수동형 방향성 결합기를 연마길이와 연마깊이를 100㎛간격으로 변화시키면서 제작하여 측정하였다. 플라스틱광섬유 연마를 위한 연마도구를 설계 제작하였고 적절한 연마재를 선택하여 정밀한 옆면 연마를 할 수 있었다. 정밀한 연마와 더불어 옆면 연마 후 손실을 최소화하기 위한 균일한 접합공정을 조사하였고, 방향성 결합기의 결합률과 초과손실, 입력손실을 각 연마길이와 연마깊이에 따라 알아보았으며, 결합률이 좋으면서 초과손실이 작은 최적의 연마길이와 연마깊이를 구해보았다. Passive directional plastic optical couplers were fabricated and characterized by changing polishing length and depth. Precise polishing and curing were required to minimize the loss of the coupler. Therefore, a polishing instrument was designed and constructed to polish the POF in side. The coupling ratio, excess loss, insertion loss were measured systematically and the best coupling ratio with the lowest excess loss was also investigated.

3차원 그래픽이 온라인 쇼핑 몰 소비자의 가상현실 경험에 미치는 영향

이은곤 연세대학교 대학원 2003 국내석사

정보기술의 도입과 실생활에서의 적용은 단순히 개인차원을 넘어서 기업의 활동영역을 넓히고, 온라인 쇼핑 몰로 대비되는 새로운 시장기회를 만들어 냈다. 온라인 쇼핑 몰을 이용하는 소비자 불만의 대부분은 상품에 관한 정보를 잘못 이해하는 데서 비롯되며, 이러한 소비자 불만은 온라인 쇼핑 몰의 성과를 떨어뜨리거나 쇼핑 몰의 신뢰도에도 영향을 미쳐 고객을 상실하게 되는 결과를 낳고 있다. EC시장의 경쟁이 격화되면서, 많은 온라인 쇼핑 몰 운영자들은 자사의 몰을 시장에서 전문화, 차별화하기 위해 3D를 비롯한 다양한 그래픽과 멀티미디어를 활용하려고 한다. 기존 선행 연구들은3D 그래픽은 더 풍부한 정보를 제공하므로 EC를 이용하는 소비자의 이해를 높일 수 있다고 예측한다. 그러나, Steven et al.등에 의하면 3D 그래픽의 효과가 생소함 효과(novelty effect, 이하 생소함 효과)때문이며, 생소함 효과가 제거될 경우, 3D 그래픽의 효과가 감소할 것이라는 주장 또한 제기되고 있다. 따라서, 본 연구에서는 온라인 쇼핑 몰에 사용되는 3D 그래픽과 2D, 그리고 2D의 정보 전달의 한계성을 극복하기 위해 최근 온라인 쇼핑 몰에서 자주 사용되고 있는 여러 장의 2D 사진을 제공하는 경우, 그리고 3D 그래픽의 생소함 효과가 사라진 이후의 효과를 비교해 봄으로써 보다 실제적인 매체의 효과에 대한 비교분석을 진행하고자 하였다. 본 연구에서는 온라인 쇼핑 몰에서 매체 유형에 따라 소비자가 느끼는 실존감(Presence, 이하 실존감)과 소비자 정보처리 과정이 어떤 차이를 보이는가에 중점을 두고, 실험실 실험을 통해 이를 분석하고자 하였다. 매체 유형에 따라 실존감과 소비자 정보 처리 과정에 어떤 영향을 미치는가에 대한 연구결과, 3D 그래픽의 생소함 효과가 존재한다는 가설은 부분적으로 증명되었고, 생소함 효과를 제거한 3D 그래픽의 경우와 2D와의 비교분석에서는 실제지식을 제외하고는, 대부분의 변수에서 부분적으로 차이를 나타내거나 유의적인 차이를 발견하지 못하였다. 2D 매체간 비교에서는 유의한 차이를 발견하지 못하였다. 본 연구를 통해, 온라인 쇼핑 몰에서 사용되는 다양한 매체들의 효과를 실증적으로 비교, 검증함으로써, 실무적인 입장에서 보다 가시적인 도움을 줄 수 있다. 또한, 생소함 효과가 사라진 3D의 효과를 타 매체와 비교, 분석함으로써 연구의 폭을 넓혔으며, 실존감 이라는 매체의 인지적 효과와 소비자 정보처리 과정이라는 매체의 소비자에 대한 영향력 등, 다양한 관점들을 종합적으로 살펴봄으로써, 선행 연구를 종합하고 후행연구의 가능성을 확대시켰다. It makes the new market opportunities, so called electronic commerce Market (EC) standing for online shopping mall, and extend the boundary of the activities of companies, introducing IT and appling in the real world. The majority of customer’s dissatisfaction in online shopping mall results from the misunderstanding the information of goods. The low performance of online shopping mall and the loss of their customer result from this satisfactions affecting the trust of the online shipping mall. The competition of EC market grow harder, the manager of online shopping mall want to display their goods in 3D or many other multimedia and graphics. It’s proved in the previous research that 3D present more abundant informations, and makes customer understand information more effectively. According to Steven et al., novelty effect makes the performance of 3D bluffing and if the novelty effect of 3D graphics is removed , the effect of 3D graphics will be reduced. In this research, we compare the performance of 4 media types in the view of the cognitive performances and information processing process of customers in the laboratory experiment. Four media types are the 3D that has the novelty effect, 3D that has not novelty effect, 2D that composed of the plural pictures, and 2D that composed of the just a picture. In the results, it’ proved that the novelty effect of 3D graphics exist. We cannot found the significant difference of the performances between 3D novelty group and 3D experienced group, and between 2D plural and 2D singular. Especially in the comparison of 3D experienced and 2D, there are no significant differences in the view of presence and customer information processing process except the real information about the merchandises. In this research, we can contribute to the more visible information of the performances of each media in the view of practical affairs. We extend to the boundary of previous research by investigating the performance of 3D experienced, and view the performances of the various dependant variables, presence and customer information processing process on the wide scope.

How to improve online review mechanisms? : a review rating mechanism and review performance

이은곤 Graduate School, Yonsei University 2011 국내박사

Online feedback mechanism has been deployed in various customer opinion sites and review sites that have result in an increase in customer participation. It grows more popular that customers could remain a number of reviews and a length of the reviews about the service and product provided by the seller in those sites. Customers have difficulty to identify the reviews of what they want as the number and the length of reviews increase, because customers can only judge a helpful review after reading. Customers could not be confident that the reviewers are always impartial. Some researchers have argued that the current online review mechanism allows for manipulation by individuals who write unfair reviews or abuse the review mechanisms to advertise their own products and the current feedback mechanism has resulted in a distorting effect on the purchase decision of other customers (Dellarocas 2005, Resnick & Zeckhauser 2002, Duan & Whinston, 2005, Li & Hitt, 2008). Whereas the prior online feedback mechanism literature has found the various aspect of feedback mechanisms such as the effect of feedback mechanisms (Ba & Pavlou 2002), and the effect of the structural assurance such as the seal of approval, and abuse-protection policy(Pavlou & Gefen 2004) that could not provide solution on the above two problems. This research empirically validates another solution, the ‘peer rating mechanism’ that consists of a review rating mechanism, reviewer reputation mechanism by the peer customer community, the website characteristics of review navigation support and review visual design. The peer rating mechanism is the mechanism that provides the information cues that allow the customers through judge the reviews and the reviews. Followed with the finding of the effect of content rating and credibility indicators by Poston et al. (2005), the effect of website characteristics by Cyr (2007), institution-based trust literature by McKnight et al.(2002), and Pavlou and Gefen (2004), we predict that the peer rating mechanism and website characteristics affect the perceived review quality and reviewer credibility. In addition, information adoption model by Sussman and Siegal (2002) and post adoption model by Kim and Son (2009), the change of customer’s perception on the reviews and the reviewers could result in the change of attitude and behavioral intention. We empirically test our model through the quasi-experiment use of data collected from 213 students who have experienced online shopping after reading reviews in open-markets. As expected, we found that the peer rating mechanism and website characteristics could successfully enhance the perceived review quality and reviewer credibility of readers that could result in the enhancement of the review related attitude and behavioral intentions such as review adoption intention, review mechanism reuse intention, word of mouth intention and reciprocal participation intention. In general, the findings suggest that by introducing the peer rating mechanism we could effec-tively and credibly improve current feedback mechanism; In addition, it is essential to use the community of consumers to make the market sound. We could make the more balanced view on the effect of the review mechanism besides the benefit of the seller such as the price premium shown in prior research. We found that the relevant information could directly affect the reader’s judgment on the information and source. Finally, we could introduce the real artifacts of peer rating mechanism and website characteristics to improve the current feedback mechanisms.

(The) effect of information system and service quality on customer relationship quality and loyalty : focusing on Chinese e-banking

궁징 University of Suwon 2014 국내박사