• Journal of the korean academy of Pediatric Dentistry
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• v.42 no.4
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• pp.302-311
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• 2015

The purpose of this study was to evaluate the antibacterial properties of a sealant containing S-PRG filler compared to those of two contemporary commercial sealants to determine the inhibition of bacterial growth in broth culture and biofilm formation using the CDC Biofilm Reactor. The BeautiSealant containing S-PRG filler, the fluoride releasing Clinpro$^{TM}$ sealant, which are known to have higher antibacterial effects, and the non-fluoride releasing Concise$^{TM}$ sealant were selected for this study. A Streptococcus mutans culture in BHI broth without sealant served as a negative control in the planktonic growth inhibition test. As a result, bacterial growth was inhibited in all three sealant groups compared to that in the control. The Clinpro$^{TM}$ sealant showed a significantly reduced number of CFUs compared to those of the BeautiSealant and Concise$^{TM}$ sealants. However, no significant difference was detected between the BeautiSealant and Concise$^{TM}$ sealants. The Clinpro$^{TM}$ sealant significantly decreased biofilm formation compared to that by the BeautiSealant and Concise$^{TM}$ sealants. No significant difference was observed between the BeautiSealant and Concise$^{TM}$ sealants. In conclusion, the sealant containing S-PRG filler had a less potent anti-bacterial property and increased biofilm formation capacity compared to those of the fluoride releasing Clinpro$^{TM}$ sealant.

• The Journal of the Korea Contents Association
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• v.6 no.11
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• pp.74-84
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• 2006

It is quite impossible for a service firm to deliver service without failure. The main reason is that service is intangible, perishable and heterogeneous in nature. Every service firm tries its best to recover service failure with understanding that service failure affects customers' evaluation and attitude for the firm. The research finds that customers' satisfaction after recovery affects customers' intentions both service encounter satisfaction and overall firm satisfaction strongly affects positive word-of-month and purchase intentions. The results have implications to researchers and service marketing managers. For researchers, the result will be helpful for them to further develop service failure and recovery framework. For service marketing managers, the result will suggest specific guidelines for establishing service recovery strategies.

• Journal of the korean academy of Pediatric Dentistry
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• v.26 no.2
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• pp.416-426
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• 1999

The objective of this study is to confirm the effect of dentine bonding primer application on penetration of sealant. Extracted permanent molars were used to compare penetration success rate of control group (sealant application only) and experimental groups (sealant application after applying the primers of $Scotchbond^{TM}$ Multi-Purpose system and $All-Bond^{(R)}$ 2 system). The following results were obtained: 1. The experimental groups using the primers showed increased sealant penetration success rate to the base of fissure when compared to control group but there was no statistically significant differences(p>0.05). 2. The depth, width and 'depth/width' value of fissure had statistically significant effect on sealant penetration success rate(p<0.05). 3. The penetration success rate decreased about 0.9 times as the depth of fissure increased every $25{\mu}m$, and increased about 1.1 times as the width of the fissure orifice increased every $25{\mu}m$ and decreased about 0.6 times as the 'depth/width' value increased every 1. From the above results, it can be concluded that assure morphology had a great effect on sealant penetration and for better penetration, use of dentine bonding primer can be helpful but it needs more study in clinical bases.

• Information Systems Review
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• v.21 no.2
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• pp.29-50
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• 2019

Social media is divided into Owned Media, operated by companies according to information sources, and Earned Media, which third parties produce contents. Social media research developing the logic that brand-related content in social media increases awareness of potential customers and positively changes brand attitudes, resulting in increased sales and business performance. However, there are limitations in previous researches that can not fully explain the difference of media synergy effect according to the information source of social media. it is very important for the consumer to integrate media management because consumers are more likely to choose appropriate media information for the information needed at each decision making stage. The purpose of this study is to analyze the effect of eWOM of review site and social media (owned media and earned media) on movie sales. To do this, we collected 3,589 review data from films released in 2017. The results of the study showed that eWOM of review site, social media (owned media and earned media) had a positive effect on movie sales. However, it was found that the effect of moderating eWOM of review site was different between the owned media and the earend media.

• Journal of Internet Computing and Services
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• v.12 no.6
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• pp.105-116
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• 2011

This paper identifies the determinants of adoption of e-government services. The on-line tax filing and payment system, called Hometax, is a well-known e-government service for taxpayers. Using a theoretical model based on Technology acceptance model, this case study examines the causal relationships among the variables of the adoption behavior for on-line tax filing and payment system. Major research variables include satisfaction, perceived usefulness, perceived ease of use, words of mouth, subjective norms, trust, interaction and facilitating conditions. Results from 279 survey responses indicate that the usefulness and ease of use affect the user satisfaction, which, in turn, with the word of mouth influences intentions to use an e-government service. Subjective norms and trust has been found to affect the usefulness, and interaction as well as facilitating conditions have also some impact on the ease of use. As a conclusion, the academic and practical implications of these findings are discussed.

• Asia Marketing Journal
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• v.11 no.1
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• pp.73-92
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• 2009

Consumers influence other consumers' brand choice behavior by delivering a variety of objective or subjective information on a particular product, which is called WOM (Word-Of-Mouth) activities. For WOM activities, WOM senders should choose messages to deliver to other consumers. We classify the contents of the messages a consumer chooses for WOM delivery into two categories: Subjective (positive or negative) evaluation and objective information on products. In our study, we regard WOM senders' activities as a choice behavior and introduce a choice model to study the relationship between the choice of different WOM information (WOM with positive or negative subjective evaluation and WOM with objective information) and its influencing factors (information sources and consumer characteristics) by developing two bivariate Probit models. In order to consider the mediating effects of WOM senders' product involvement, product attitude, and their characteristics (gender and age), we develop three second-level models for the propagation of positive evaluations, of negative evaluations, and of objective information on products in an hierarchical Bayesian modeling framework. Our empirical results show that WOM senders' information choice behavior differs according to the types of information sources. The effects of information sources on WOM activities differ according to the types of WOM messages (subjective evaluation (positive or negative) and objective information). Therefore, our study concludes that WOM activities can be partially managed with effective communication plans influencing on consumers' WOM message choice behavior. The empirical results provide some guidelines for consumers' propagation of information on products companies want.

• Asia Marketing Journal
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• v.12 no.2
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• pp.1-25
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• 2010

Motion pictures are so typical experience goods that consumers tend to look for more credible information. Hence, movie audiences consider movie viewers' reviews more important than the information provided by the film distributor. Recently many portal sites allow consumers to post their reviews and opinions so that other people check the number of consumer reviews and scores before going to the theater. There are a few previous researches studying the electronic word of mouth(eWOM) effect in the movie industry. They found that the volume of eWOM influenced the revenue of the movie significantly but the valence of eWOM did not affect it much (Liu 2006). The goal of our research is also to investigate the eWOM effects in general. But our research is different from the previous studies in several aspects. First, we study the eWOM effect in Korean movie industry. In other words, we would like to check whether we can generalize the results of the previous research across countries. The similar econometric models are applied to Korean movie data that include 746,282 consumer reviews on 439 movies. Our results show that both the valence(RATING) and the volume(LNMSG) of the eWOM influence weekly movie revenues. This result is different from the previous research findings that the volume only influences the revenue. We conjectured that the difference of self construal between Asian and American culture may explain this difference (Kitayama 1991). Asians including Koreans have more interdependent self construal than American, so that they are easily affected by other people's thought and suggestion. Hence, the valence of the eWOM affects Koreans' choice of the movie. Second, we find the critical defect of the previous eWOM models and, hence, attempt to correct it. The previous eWOM model assumes that the volume of eWOM (LNMSG) is an independent variable affecting the movie revenue (LNREV). However, the revenue can influence the volume of the eWOM. We think that treating the volume of eWOM as an independent variable a priori is too restrictive. In order to remedy this problem, we employed a simultaneous equation in which the movie revenue and the volume of the eWOM can affect each other. That is, our eWOM model assumes that the revenue (LNREV) and the volume of eWOM (LNMSG) have endogenous relationship where they influence each other. The results from this simultaneous equation model showed that the movie revenue and the eWOM volume interact each other. The movie revenue influences the eWOM volume for the entire 8 weeks. The reverse effect is more complex. Both the volume and the valence of eWOM affect the revenue in the first week, but only the volume affect the revenue for the rest of the weeks. In the first week, consumers may be curious about the movie and look for various kinds of information they can trust, so that they use the both the quantity and quality of consumer reviews. But from the second week, the quality of the eWOM only affects the movie revenue, implying that the review ratings are more important than the number of reviews. Third, our results show that the ratings by professional critics (CRATING) had negative effect to the weekly movie revenue (LNREV). Professional critics often give low ratings to the blockbuster movies that do not have much cinematic quality. Experienced audiences who watch the movie for fun do not trust the professionals' ratings and, hence, tend to go for the low-rated movies by them. In summary, applied to the Korean movie ratings data and employing a simultaneous model, our results are different from the previous eWOM studies: 1) Koreans (or Asians) care about the others' evaluation quality more than quantity, 2) The volume of eWOM is not the cause but the result of the revenue, 3) Professional reviews can give the negative effect to the movie revenue.

• Journal of Digital Convergence
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• v.11 no.5
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• pp.225-235
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• 2013

Recently, in order to promote their marketing promotion, the entrepeneurs attach importance to many SNS services and execute it. The representative elements of the SNS service are interactivity, information offering. This study analyzes empirical effects on the SNS service depending on the Relationship Commitment and shows the strategies to enlarge the use frequency and the On-line Word-of-Mouth. The conclusion of this study shows that the Interactivity has a higher positive effects on Affective Commitment than those on information offering and Information offering has stronger positive effects on calculative commitment than interactivity. Also, these effects enlarge the high use frequency more than the low use frequency. This study also shows that the information offering affect the On-line Word-of-Mouth more positively than the Interactivity. And this study shows that SNS service affects the positive effects on the relationship commitment rather than the On-line Word-of-Mouth. Based on the results, the practical implications are offered.

• Journal of the Korean Society for Library and Information Science
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• v.48 no.3
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• pp.217-235
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• 2014

As a follow-up of the study on the marketing effect of undergraduates' work experience in university libraries(Choi 2012), this study aims to identify differences in the library loyalty of student employees by the managerial characteristics of student employees and analyzes the loyalty of the acquaintances of the student employees to identify the word-of-mouth marketing effect by behavioral loyalty of student employees. Based on the results from the analyses, we discuss the possibility of the management of student employees as a marketing activities in university libraries to the whole undergraduate student.

• Proceedings of the KAIS Fall Conference
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• 2011.12a
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• pp.144-147
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• 2011

본 논문은 패밀리 레스토랑의 웹 사이트를 방문하는 사람들이 웹 사이트에서 느끼는 '즐거움, 정보활용성, 거래편리성, 잠재적 이익, 상호작용'에 구전효과가 어떤 영향을 미치는지, 그리고 '고객태도'와 '추천'에는 어떤 영향을 미치는지 파악하였다. 연구결과는 다음과 같다, 첫째, 즐거움, 정보활용성, 잠재적이익, 상호작용은 태도에 직접적인 영향을 미치고, 태도는 추천에 직접적인 영향을 미치는 것을 확인하였다. 그리고, 즐거움, 정보활용성, 잠재적 이익, 상호작용은 추천에 간접적인 영향을 미쳤다. 둘째, 거래 편리성은 태도와 추천에 유의한 영향을 주지 못했다. 거래 편리성은 직접 패밀리 레스토랑을 이용한 후에 느끼는 부분의 성격이 크다. 웹 사이트에서 제공하는 할인쿠폰이나, 다양한 이벤트 활용이 쉬운지를 판단하는 항목인 거래 편리성은 편리함이 태도 형성과 추천에 큰 요인은 아님을 보여준다. 마지막으로, 태도가 추천에 영향을 줄 때, 구전효과의 영향은 크지 않음을 보았다. 태도는 고객이 직접 웹 사이트를 충분히 활용하면서 패밀리 레스토랑의 서비스를 실제로 경험하며 직접 느끼는 것을 포함하기 때문에, 구전효과의 영향은 적은 것으로 보인다.