• Journal of Digital Convergence
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• v.18 no.1
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• pp.103-109
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• 2020

As part of the sharing economy service, the present study is not only about the positive aspects of O2O services, but also about the consumer ethical perceptions of recent conflicts with existing business and labor markets, trust of platform, and service utility on consumer satisfaction and intention to recommend O2O services. To test hypotheses, data were collected and analyzed for 149 samples, focusing on the car sharing service, an example of the sharing economy service, which is becoming an issue. As a result, the ethical self-identity of the consumer, the trust of the platform, and the service utility, all affected the service satisfaction, whereas only the hedonic utility and trust of the platform had a positive effect on the intention to recommendation. This study is meaningful in that it examines the influence of service utility focusing on ethical consciousness and social perspective of consumers, rather than on the point of consumption such as ethical consumption position and trust of platform based on sharing economy service.

• Journal of Digital Convergence
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• v.18 no.1
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• pp.129-135
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• 2020

This study examined the consumer response of the current O2O service between service types. Previous studies mainly focused on the quality factor of O2O service or Technology Acceptance Model or extended TAM, This study is different from the fact that there are differences in factors that consumers consider important and consumer reactions by service type. It is also significant that we compared between representative food delivery services and car sharing services that are actively used among O2O services. As O2O service is closely related to consumer's life, this study chose three factors that the issue of personal information security and trust of intermediary platform companies, and finally subjective norm based on individuals and groups who are aware of new O2O service. To test hypotheses, data were collected and analyzed for 301 samples, focusing on delivery and car sharing service, As a result, the delivery service among the O2O services was more positive to attitude toward service in the consumer group with lower personal information security, trust in platform, and subjective norm than car sharing service. Based on these results, implications and future research directions were presented.

• Annual Conference of KIPS
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• 2021.05a
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• pp.183-184
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• 2021

블록체인 기반 온라인 거래 플랫폼은 중개자에 의존적인 기존의 거래 방식을 탈피하여 비용 및 시간의 낭비를 줄이고 참여자들 간의 신뢰성 있는 직접적인 거래를 실현시켰다. 하지만 비허가형 블록체인은 참여자들의 프라이버시를 제공하지 못하는 문제가 있다. 본 논문에서는 허가형 블록체인인 하이퍼레저 패브릭을 사용하여 프라이버시를 강화한 디지털 콘텐츠 저작권 보호 및 거래를 위한 블록 체인 플랫폼을 제안한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.11a
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• pp.38-40
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• 2019

본 논문에서는 블록체인 및 암호화폐를 이용한 재능 거래 플랫폼을 제안한다. 재능 거래 플랫폼은 프로그램의 외주나 컨텐츠 제작 등의 재능 거래를 중개하는 플랫폼이다. 기존의 재능 거래 플랫폼은 서버-클라이언트 모델 기반의 서비스를 제공하고 있다. 이에 따라 서버를 운용하는데 드는 비용과 관리를 위한 인건비가 발생한다. 따라서 이용자들은 높은 수수료를 부담하게 된다. 또한 서버-클라이언트 모델의 서비스의 경우 이용 업체의 요청에 따라 중앙 관리자가 평가 및 평점에 대한 조작 및 수정을 할 수 있는 가능성이 존재한다. 이러한 단점을 보완하기 위해 블록체인 및 암호화폐 기술을 적용하여 P2P 거래를 통해 이용자에게 부과하는 수수료의 부담을 낮추고, 평가를 블록 데이터로 포함하여 데이터의 위 변조 가능성을 낮춰 신뢰성을 확보하는 시나리오를 제안한다.

• Journal of Internet Computing and Services
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• v.21 no.3
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• pp.1-9
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• 2020

Along with the growth of Blockchain, DApp (Distributed Application) is getting attention. As interest in DApp grows, market size continues to grow and many developers participate in development. Many developers are using API(Application Programming Interface) services to mediate Blockchain nodes, such as Infura, for DApp development. However, when using such a service, there is a serious risk that the API service operator can violate the user's privacy by 1 to 1 matching the account address of the Transaction executed by the DApp user with the IP address of the DApp user. It can have an adverse effect on the reliability of public Blockchains that need to provide users with a secure DApp service environment. The proposed Blockchain platform is expected to provide user privacy protection from API services and provide a reliable DApp use environment that existing Blockchain platforms did not provide. It is also expected to help to activate DApp and increase the number of DApp users, which has not been activated due to the risk of an existing privacy breach.