• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.334-336
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• 2001

멀티캐스트를 이용하는 각종 서비스가 증가하고 그중 파일 전송 서비스, 인터넷 방송 등과 같은 응용서비스는 신뢰성 있는 멀티캐스트를 요구한다. 현재의 IP 멀티캐스트 서비스의 특성상 신뢰성 있는 멀티캐스트를 하기 위해서 신뢰전송 프로토콜이 필요하다. 이러한 방법가운데 계층적 트리를 구축하여 신뢰성을 보장하려는 노력이 활발하게 진행되고 있다. 본 논문에서는 라우터 지원방식을 제공하여 멀티캐스트 서비스에서 효율적으로 신뢰성을 보장하는 방법을 제안한다. 기존의 라우팅 지원방식이 복잡한 라우터 기능을 요구하는 반면 제안하는 방법은 간단하게 메시지 타입만 검사하여 네트워크 토폴로지와 병합하는 제어한다. 이로써 링크간의 불필요한 중복데이타를 줄이고 효율적인 링크사용을 통하여 신뢰성 보장의 효율성을 높일 수 있다.

• Journal of Digital Convergence
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• v.8 no.1
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• pp.11-26
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• 2010

The purpose of this paper is to study building and maintaining consumer trust in mobile contents for tourism and travel in perspective of public sector. Mobile contents services are increasing rapidly. Tourism contents in mobile services are non profit business model in an early and immature stage toward the ubiquitous era. Non-profit organization plays a role as service provider through Internet and wireless telecommunication in an information-intensive and network-oriented environment. This article is proposed nonprofit organizations as tourism contents service provider to identify a conceptual framework that can build continuous trusted mobile contents under ubiquitous environment according to developing and maintaining stage. The results based on the focus group interview methodology highlights a conceptual foundation for service providers in nonprofit domain.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.7 no.3
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• pp.133-141
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• 2012

Service and manufacturing companies' efforts are increasingly focused on utilizing services to satisfy customers' needs and survive in today's competitive market environment. The value of services depends mainly on service reliability that is identified by satisfaction derived from the relationship between customer and service provider. In this paper, we extend concepts from the failure modes and effects analysis of tangible systems to services. We use an event-based process model to facilitate service design and represent the relationships between functions and failures in a service. The objective of this research is to propose a method for evaluating service reliability based on service processes using fuzzy failure mode effects analysis (FMEA) and grey theory. We define the failure mode of service as interaction ways that can be failed in a service delivery process. The fuzzy set theory is used to characterize service reliability based on linguistic terms during FMEA. Grey theory is employed to determine the degree of relation and ranking among risk factors that are represented as potential failure causes. To demonstrate implementation of the proposed method, we use a case study involving a typical automotive service operation.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.16 no.6
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• pp.420-433
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• 2023

With the development of ICT technologies, various systems and services based on data have been introduced. Also, raising the importance of technologies that provide trust to a data, infrastructure, and services. for ICT services. However, in the existing ICT service environment, there is no way to objectively judge and manage the trust of various components (content, infrastructure, process, service provider, etc) that constitute a specific service, and there is a limitation that we can only rely on the service provider's own quality standards. This paper provides requirements, functional archtecture, and procedures for providing reliable ICT services from the perspective of ITU-T international standards. Trust-enabled service provisioning adds additional functions for providing trust to existing ICT service entities (service resources, stakeholders, and users), collecting, analyzing, and providing trust related information. Therefore, a users can consider the trust of various service components based on analyzed trust information based on their trust requirements.

• Management & Information Systems Review
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• v.36 no.2
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• pp.113-132
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• 2017

This research focuses on the effect of consumer's innovativeness and the trust in other domain affecting the intention to use mobile payment services. The result of this paper reveals that consumer's innovativeness has both a direct impact on the intention to use mobile payment services and a indirect impact. Relative advantage and image play a mediating role between consumer's innovativeness and the intention to use mobile payment services. Moreover, the study reveals that the trust in other domain not only directly affects on the intention to use mobile payment services but also indirectly affects by mediating relative advantage, image, and perceived risk. This study indicated that a customer's established trust in other domain influences his or her trust in mobile payment services. Electronic payment service providers should consider that the trust-building process encompasses other domain as well as mobile relationships. And electronic payment firms should do their best to reduce customers' perceptions of risk.

• The Journal of the Korea Contents Association
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• v.15 no.10
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• pp.517-534
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• 2015

The purpose of this study is to identifies the effects of service quality factors on satisfaction and trust, and then verifies the causal relations among satisfaction, trust, commitment and using intention in mobile service setting. A survey was conducted to collect the data with consumers who had the actual using experience about mobile services. Analysis of structural equation modeling with SPSS 20.0 and AMOS 16.0 were performed to test the research hypothesis. The result of the study as follows: First, it was found to difference in relationship between dimensions of mobile service quality and satisfaction except for the pleasure. Second, the sociality was found to significant path coefficients in relationships with trust. Third, satisfaction and trust have influence on commitment and commitment has effects on using intention, but there had no significant path coefficients between satisfaction and trust, and then both satisfaction and trust were not found to significant path coefficients in relationship with using intention. Therefore, Marketers of mobile service corporate have to give excellent service quality to consumers who have using their mobile service for increase of using intention through build up trust and commitment by consumers who satisfied.

• Review of KIISC
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• v.18 no.2
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• pp.23-32
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• 2008

유비쿼터스 환경에서는 IT서비스에 사람뿐만 아니라 기기 및 사물 등이 참여하고 다양한 인증수단이 사용된다. 하지만, u-IT서비스에 참여하는 개체에 대한 신뢰된 인증환경이 없다면 유비쿼터스 사회의 전체 신뢰도가 떨어지는 결과를 초래하게 된다. 본 논문에서는 유비쿼터스 환경의 신뢰된 인증 환경 조성을 위한 프레임워크로서 u-lT 서비스에 인증서비스를 도입하기 위한 절차와 u-lT 서비스 위험평가 방법 및 인증수단 선택기준 등의 보안요구사항을 제시한다.

• Proceedings of the Korean Information Science Society Conference
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• 2003.10a
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• pp.520-522
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• 2003

통신망의 발전으로 사용자는 새로운 인터넷 서비스를 요구하게 되었다. 이러한 서비스의 대부분은 멀티 캐스팅을 사용하며, 전송되는 데이터는 대용량의 멀티미디어 데이터가 주를 이루고 있다. 멀티미디어 서비스는 일정한 수준의 서비스를 위하여 신뢰도를 보장해야만 한다. 신뢰도는 경로의 흡수와 관련되어 있다. 즉, 경로에 포함된 홉의 수가 많아지면 그 경로를 통한 서비스의 신뢰도는 떨어지게 된다. 이러한 이유로 전송에 관련된 경로의 홉수에 제한을 두는 것은 통신의 신뢰성을 위하여 고려되어져야하는 중요한 문제이다. 본 논문에서는 멀티캐스트 트리의 각 경로의 흡수와 비용의 관계를 알아보기 위해 유전자 알고리즘과 개미 알고리즘을 사용한다.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.759-776
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• 2009

This paper aims at identifying trust factors to be managed in UCC environment, and how those trust factors impact on trust in UCC site. Also this paper examines the moderating effect of level of UCC participation(UCC retrieve, UCC production) on the relation between trust in UCC site and intention to use. For this purpose, we identified information, system, service, and site trust through intensive review of prior researches and some expert interviews. A total 338 surveys were used to analyze research hypothesis. The findings show that information, system, and service trust is positively and significantly related to site trust, and then site trust has impact on UCC usage. But, It is proven that there is no difference in effect of site trust on UCC usage according to level of UCC participation.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.23 no.2
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• pp.157-168
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• 2013

The social network service is the bidirectional media that all of the users are be able to directly produce, process, and distribute the information without distinction of the producer and consumer. Over increasing the users rapidly, the users are be able to obtain and share the various information, but the problems occur due to the spread of unreliable information on the service. Moreover, it is spreading the problems violating the privacy and decreasing the reliability of the users by exploiting the open environment. Therefore, sensitive information can be delivered only to users which information producer can trust, and the users should get the information from the trustworthy users. Due to this necessity, it needs the efficient method can evaluates the reliability of the users. In this paper, we define the reliability in the service, make the trust parameter by using the function of the service, and propose the dynamic user reliability evaluation scheme evaluating the reliability of users. We draw the trust range on the reliability of users by analyzing the proposed reliability evaluation scheme.