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Historically, the introduction of a new media in mass market caused a strong conflict starting from the nineteenth century popular literature, comics, rock music and film. Interestingly, these conflicts have shown similar and repeated patterns, which is now called media panic and moral regulation, and games are following this pattern. In 2019, Gaming disorder (GD) was decided to be included in the International Classification of Diseases (ICD-11), and similar conflicts on games arenow expected. However, the social cost and damage have not been fully addressed until now. Thus, this study focuses on the estimation of the social cost induced by GD for policy design and decisions in the public healthcare of South Korea. Using the contingent valuation method, a popular valuation method in econometrics for non-market goods, this study has tried to estimate the social cost induced by the introduction of GD into the public healthcare practice. Focusing on a false positive problem in the diagnosis, this study estimates that the willingness to pay for GD diagnosis for children is about KRW 152 K (USD 135). Considering the difference between the prevalence of GD (1.9%) and GD suspicion rate of children in the respondents (12.54%), the excessive medical diagnosis cost due to the false positive problem is estimated to KRW 101 billion (USD 89.6 M), which is about four times more than the annual medical cost for Attention Deficit Hyperactivity Disorder (ADHD) treatment in South Korea. Thus, strong scientific proof and a cautious policy approach on GD are needed before the inclusion of GD in the public health practice.
Changsok Yoo; Yelim Kim; Jee Sohn. Evaluating the Social Cost of Conflict between New Media and Society: The Case of Gaming Disorder in South Korea. Sustainability 2021, 13, 8106 .
AMA StyleChangsok Yoo, Yelim Kim, Jee Sohn. Evaluating the Social Cost of Conflict between New Media and Society: The Case of Gaming Disorder in South Korea. Sustainability. 2021; 13 (14):8106.
Chicago/Turabian StyleChangsok Yoo; Yelim Kim; Jee Sohn. 2021. "Evaluating the Social Cost of Conflict between New Media and Society: The Case of Gaming Disorder in South Korea." Sustainability 13, no. 14: 8106.
A sharing economy accommodation service like Airbnb, which provides trust between strangers to connect them for profiting from underutilized assets, was born and has thrived thanks to the innovations in the platform technology. Due to the unique structure of Airbnb, the pricing strategies of hosts are very different from the conventional hospitality industry. However, existing Airbnb pricing studies have limitations considering the varying scale of operation among hosts, spatial variances in pricing strategies, and crucial geographic information for estimating the influence of the pricing variables, as well as ignoring inter-city variances. In this research, we explored the spatially heterogeneous relationship between price and pricing variables using an innovative spatial approach, Multiscale Geographically Weighted Regression (MGWR). Analysis results for Airbnb listing in Log Angeles and New York in the US showed the effectiveness of MGWR regarding estimating the influence of pricing variables spatially. By revealing spatially heterogeneous and dependent relationships, this research fills gaps in Airbnb pricing research and deepens the understanding of the pricing strategies of the hosts.
Insu Hong; Changsok Yoo. Analyzing Spatial Variance of Airbnb Pricing Determinants Using Multiscale GWR Approach. Sustainability 2020, 12, 1 .
AMA StyleInsu Hong, Changsok Yoo. Analyzing Spatial Variance of Airbnb Pricing Determinants Using Multiscale GWR Approach. Sustainability. 2020; 12 (11):1.
Chicago/Turabian StyleInsu Hong; Changsok Yoo. 2020. "Analyzing Spatial Variance of Airbnb Pricing Determinants Using Multiscale GWR Approach." Sustainability 12, no. 11: 1.
As customer loyalty keeps declining, the importance of customer relationship management is paramount especially for online-service marketers. Reacquisition of defected customers is better than acquiring new customers in terms of marketing efficiency as well as effectiveness. However, the issue of winning back defected customers has been largely neglected among scholars. In this paper, we present empirical analyses based on real transactional data from 4000 users of one of the most successful online games in Korea to investigate the relationship between demographic, RFM, behavioral, and social network variables and the users’ response to reacquisition campaigns. Since the dependent variable is skewed, a quantile regression method was utilized for model estimation. To figure out what kind of characteristics would influence the likelihood of “staying alive” after the campaigns, the results from Period 1(win-back) were compared against those from Period 2(retention). The findings shed many useful insights in targeting and designing win-back campaigns.
Changsok Yoo; Kyoung Cheon Cha; Sang-Hoon Kim. A quantile regression approach to gaining insights for reacquition of defected customers. Journal of Business Research 2019, 120, 443 -452.
AMA StyleChangsok Yoo, Kyoung Cheon Cha, Sang-Hoon Kim. A quantile regression approach to gaining insights for reacquition of defected customers. Journal of Business Research. 2019; 120 ():443-452.
Chicago/Turabian StyleChangsok Yoo; Kyoung Cheon Cha; Sang-Hoon Kim. 2019. "A quantile regression approach to gaining insights for reacquition of defected customers." Journal of Business Research 120, no. : 443-452.
Smart tourism and the sharing economy within it are transforming human lives and are considered a huge innovation in the industry. This change inevitably creates huge resistance, which did not obtain much attention. Thus, this study focuses on sharing economy's risk aspects, which have become a social issue. It investigates how risks affect the development and diffusion of the sharing economy, especially in Airbnb. This study adopts extended model of goal-directed behavior and depicts the decision-making process of potential Airbnb users to analyze risk effect. Results of structural equation modeling applied to 300 potential customers indicate that privacy and financial risks negatively affect the intention to use the sharing economy. However, physical and performance risks are positively related with behavioral intention or desire. This risk paradox can be explained by the disruptive innovation of the sharing economy and the characteristics of risk engagement in tourism. Implications for research and practice are discussed along with the findings of the study.
Jisu Yi; Gao Yuan; Changsok Yoo. The effect of the perceived risk on the adoption of the sharing economy in the tourism industry: The case of Airbnb. Information Processing & Management 2019, 57, 102108 .
AMA StyleJisu Yi, Gao Yuan, Changsok Yoo. The effect of the perceived risk on the adoption of the sharing economy in the tourism industry: The case of Airbnb. Information Processing & Management. 2019; 57 (1):102108.
Chicago/Turabian StyleJisu Yi; Gao Yuan; Changsok Yoo. 2019. "The effect of the perceived risk on the adoption of the sharing economy in the tourism industry: The case of Airbnb." Information Processing & Management 57, no. 1: 102108.
Considering that the core concerns in sustainability are threats to the survival of humankind and the ecosystems that humans depend on, changing the consumption and production behaviors of individuals and society is inevitable. However, people are reluctant to change their own behavior in support of sustainability goals. This tendency seems to be especially strong in tourism because the main value of tourism is hedonic utility. Thus, the tourism industry is now introducing gamification and smart tourism to shift tourist behavior toward sustainability, but most of studies and practices only focus on the performance and application of gamification without considering customer adoption patterns and perceptions during the process. This study empirically investigated what factors affect the adoption of smart tourism applications that incorporate game elements, using the Google Maps tourist guide program. As an initial approach, we incorporated diverse theoretical approaches: perceived usefulness; perceived ease of use; perceived enjoyment from technology acceptance model; information and interaction motivations from the uses and gratifications theory; the network effect; distributive justice; flow as responses to the game characteristics of smart tourism applications; and information privacy concerns as a negative factor for diffusion. The result showed that hedonic characteristics of the gamified smart tourism application (GSTA) are strong in adoption. Perceived enjoyment had a significant influence on the intention to use, but information quality, related to cognitive experience, did not. The flow and perceived distributive justice associated with the game content were not significant, but the interaction motivation was significant in the research model. The results of this study show that individuals regard a GSTA as a low-level game tool. Also, it is important to preoccupy the smart tourism application market in terms of marketing strategy because the network effect is relevant to both perceived usefulness and perceived enjoyment. We also found that the need to provide personal information would negatively affect the adoption of a gamified smart tourism application.
Changsok Yoo; Shinhye Kwon; Hyunsoo Na; Byenghee Chang. Factors Affecting the Adoption of Gamified Smart Tourism Applications: An Integrative Approach. Sustainability 2017, 9, 2162 .
AMA StyleChangsok Yoo, Shinhye Kwon, Hyunsoo Na, Byenghee Chang. Factors Affecting the Adoption of Gamified Smart Tourism Applications: An Integrative Approach. Sustainability. 2017; 9 (12):2162.
Chicago/Turabian StyleChangsok Yoo; Shinhye Kwon; Hyunsoo Na; Byenghee Chang. 2017. "Factors Affecting the Adoption of Gamified Smart Tourism Applications: An Integrative Approach." Sustainability 9, no. 12: 2162.
Trade Shows (TSs) provide “high-quality information,” as thousands of specialists and experts are gathered in one place at one time. Thus, information technology systems become essential for TSs. This study explores the characteristics of TSs’ onsite Information Technology (IT). This study aim to explore the relationships among onsite IT usage, visitors’ effectiveness and perception through the innovation characteristics (i.e., relative advantage, compatibility, and complexity). The study was conducted at a representative TS in Korea and used a survey approach to empirically understand the perception of onsite IT usage. The findings suggest that the four characteristics of product intelligence are influential factors of TSs’ onsite IT. Among them, relative advantage and compatibility had positive impacts on TS effectiveness, while complexity did not. In addition, discussions of the results, theoretical and practical implications for practitioners, limitations, and suggestions for future studies are presented.
Sunyoung Hlee; Jimin Lee; Daeseop Moon; Changsok Yoo. The acceptance of ‘intelligent trade shows’: Visitors’ evaluations of IS innovation. Information Systems Frontiers 2016, 19, 717 -729.
AMA StyleSunyoung Hlee, Jimin Lee, Daeseop Moon, Changsok Yoo. The acceptance of ‘intelligent trade shows’: Visitors’ evaluations of IS innovation. Information Systems Frontiers. 2016; 19 (4):717-729.
Chicago/Turabian StyleSunyoung Hlee; Jimin Lee; Daeseop Moon; Changsok Yoo. 2016. "The acceptance of ‘intelligent trade shows’: Visitors’ evaluations of IS innovation." Information Systems Frontiers 19, no. 4: 717-729.
The security risk of internet banking has increased rapidly as internet banking services have become commonly used by the public. Among the various security methods, OTP (one time password) is known as one of the strongest methods for enforcing security, and it is now widely used in internet banking services. However, attack methods which can detour OTP have been developed that additional security for OTP is now needed. In this study, we discovered that a new kind of attack through OTP is theoretically possible through an analysis of the currently implemented OTP system and known attack methods. Based on our theory, we tested the new attack method on Korean internet banking services, and empirically proved that it could effectively detour around all of the currently implemented OTP security systems in Korea. To prevent this, we also suggested solutions based on the root cause analysis of the OTP vulnerabilities.
Changsok Yoo; Byung-Tak Kang; Huy Kang Kim. Case study of the vulnerability of OTP implemented in internet banking systems of South Korea. Multimedia Tools and Applications 2014, 74, 3289 -3303.
AMA StyleChangsok Yoo, Byung-Tak Kang, Huy Kang Kim. Case study of the vulnerability of OTP implemented in internet banking systems of South Korea. Multimedia Tools and Applications. 2014; 74 (10):3289-3303.
Chicago/Turabian StyleChangsok Yoo; Byung-Tak Kang; Huy Kang Kim. 2014. "Case study of the vulnerability of OTP implemented in internet banking systems of South Korea." Multimedia Tools and Applications 74, no. 10: 3289-3303.