• 정보보호학회논문지
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• 제14권2호
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• pp.35-47
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• 2004

평판 기반 시스템(reputation-based system)은 현재 활발히 사용되고 있는 P2P(Peer-to-Peer) Network System에서 가장 주목받고 있는 인증 방식이다. 본 논문에서는 새로운 평판 기반 시스템인 Self-Reputation system을 제안한다. Self-Reputation system은 사용되어지는 P2P network에 무관하게 적용 가능하기 때문에, 여러 가지 P2P 네트워크에서의 평판을 하나로 통합 관리할 수 있는 방안을 제공한다. 또한, 이 시스템은 기존의 Xrep 방식에서 broadcast를 통해서 평판을 수렴하는 방법 대신 각 사용자들이 자신의 평판 테이블을 관리하도록 하여 평판을 알아보는 과정에서의 통신량을 현격하게 줄였고, 그 결과로 효율성을 크게 향상시켰다.

• 디지털융복합연구
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• 제16권12호
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• pp.231-241
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• 2018

이 연구는 명성에 대한 진화심리학적 접근을 시도한다. 학제적 분석을 통해 명성에 대한 새로운 이해와 피알이론개발의 토대를 마련하는 것이 목적이다. 그 첫 단계로 Tall Puppy Scale을 활용해 유명인에 대한 한국인의 일반적 태도를 측정한다. 유명인에 대한 지지보상과 몰락선호를 검증하고 한국의 결과를 호주의 것과 설문을 통해 비교한다. 성공한 유명인들에 대한 한국인들의 태도는 호주인들보다 첨예했다. 포용성은 낮았고, 공격성은 높았다. 보상선호와 몰락선호를 함께 고려했을 때 한국인의 명성서열심리는 호주인들보다 6배 이상 공격적이었다. 명성서열심리를 설명하는 제1변수는 자존감이었다. 자존감이 높은 사람들은 성공한 유명인에 대해 관대하고 그들의 사회적 필요성에도 공감하고 있었다. 남성보다 여성이, 나이가 많을수록, 친구가 적을수록, 의사표현에 소극적일수록, 그리고 느끼는 경쟁이 치열할수록 유명인에 대한 공격성향이 강한 것으로 드러났다. 개인의 자존감은 명성의 진화심리를 이해하는 핵심 척도였다.

• 문화경제연구
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• 제21권2호
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• pp.141-173
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• 2018

본 연구의 목적은 국내 공예작가들을 대상으로 예술가 명성(artistic fame) 형성의 주요 요인에 대해 탐색하는 것이다. 명성이란 행위자의 이름이 널리 알려지는 것을 의미하며, 평판은 사회적 평가 (social evaluation)의 일종으로, 행위자에 대한 평판은 평가의 주체에 따라 달라질 수 있다. 저자들은 먼저 이러한 선행연구를 통해 평판과 명성의 관계를 정립하고, 11명의 전문가 인터뷰를 실시하여 국내 공예작가의 명성 형성에 대해 탐색하였다. 질적 연구를 통해 국내 공예작가의 명성 형성에 영향을 미치는 주요 요인으로는 전문가 평판(expert reputation), 시장 평판(market reputation), 동료 평판(peer reputation)이 있음을 알 수 있었다. 뿐만 아니라, 작가 개인의 평판을 위한 노력(reputational work)도 명성 형성에 영향을 미친다는 선행연구와 인터뷰 내용을 바탕으로 명성과 평판, 평판, 노력간의 관계에 대한 가설을 수립하였다. 특히, 본 연구에서는 위에 제시된 세 종류의 외부 평판과 작가자신의 평판 노력이 명성에 미치는 영향을 평가하는데 있어, 작가의 출신 학교에 따른 차이점에 주목한다. 국내 340명의 공예협회등록 작가를 대상으로 개개인의 프로필 데이터를 수집하고 관련 변수를 측정하여, 연구가설에 대한 검증을 회귀분석을 통해 실시한 결과, 엘리트 대학(서울대, 홍익대) 출신 그룹에서는 기관 경력에 기반한 동료 평판과 '김달진 미술연구소' 사이트 프로필 게재와 같은 작가의 노력이 중요한 명성 형성 요인임이 밝혀졌다. 반면, 비 엘리트 그룹에서는 공신력, 영향력, 인지도가 바탕이 된 전문가 평판 (i.e., 수상경력), 시장 평판 (i.e., 초대전 경력), 그리고 자비로 개최한 개인전의 횟수가 명성 형성의 주요 요인으로 나타났다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권12호
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• pp.6214-6242
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• 2019

Routing in mobile ad hoc networks is performed in a distributed fashion where each node acts as host and router, such that it forwards incoming packets for others without relying on a dedicated router. Nodes are mostly resource constraint and the users are usually inclined to conserve their resources and exhibit selfish behaviour by not contributing in the routing process. The trust and reputation models have been proposed to motivate selfish nodes for cooperation in the packet forwarding process. Nodes having bad trust or reputation are detected and secluded from the network, eventually. However, due to the lack of proper identity management and use of non-persistent identities in ad hoc networks, malicious nodes can pose various threats to these methods. For example, a malicious node can discard the bad reputed identity and enter into the system with another identity afresh, called whitewashing. Similarly, a malicious node may create more than one identity, called Sybil attack, for self-promotion, defame other nodes, and broadcast fake recommendations in the network. These identity-based attacks disrupt the overall detection of the reputation systems. In this paper, we propose a reputation-based scheme that detects selfish nodes and deters identity attacks. We address the issue in such a way that, for normal selfish nodes, it will become no longer advantageous to carry out a whitewash. Sybil attackers are also discouraged (i.e., on a single battery, they may create fewer identities). We design and analyse our rationale via game theory and evaluate our proposed reputation system using NS-2 simulator. The results obtained from the simulation demonstrate that our proposed technique considerably diminishes the throughput and utility of selfish nodes with a single identity and selfish nodes with multiple identities when compared to the benchmark scheme.

• 보건의료산업학회지
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• 제4권1호
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• pp.1-10
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• 2010

The purpose of this study is to investigate the effects of provider and consumer characteristics, and patient trust on relational commitment among healthcare customers of an university hospital, and to suggest some implications for improving customer relation management of hospitals. Data were collected from 250 patients of an university hospital located in Ulsan using structured self-administered questionnaire. Major result of the analysis is as follows: First, study variables are significantly varied by age and income among socio-economic factors. Second, assurance, and empathy among provider characteristics and customer satisfaction and reputation among consumer characteristics are found to be significant affecting factors on patient trust. Third, trust affects significantly both on re-visit and recommendation among relationship commitment, while reputation affects on re-visit and customer satisfaction and reputation affect on recommendation. Above results imply that relationship management strategy for enhancing patient trust is crucial to improve competitiveness of hospitals in turbulent competition environment.

• 가정과삶의질연구
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• 제27권1호
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• pp.209-219
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• 2009

This study identifies the key determinants and technology innovation adoption type of participation in multimedia UCC services. This research examines how the major factors of perceived usability, self-expression, fun & entertainment, arousal, information sharing, other's positive reputation and interface easiness contribute to participation in multimedia UCC services. A sample survey of internet users was conducted, responses were collected from 629 respondents and consumer streaming data were analyzed. Some of the practical implications of the results are follows. This research have categorized that the types of technology adoption for the participation of UCC were innovator consumer, early adaptor consumer, early majority consumer, and late majority consumer. The results of multiple regression analysis indicated that perceived usability, interface easiness, fun & entertainment, self-expression, arousal, other's positive reputation and type of technology adoption posited a significant effect in multimedia UCC Services.

• 지식경영연구
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• 제18권1호
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• pp.1-24
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• 2017

The voluntary knowledge creation plays an important role in achieving competitive advantage in the organization from the perspective of knowledge management. Although many companies have introduced the Knowledge Management Systems (KMS) for this purpose, they have not gained the expected benefits from those systems. One of the reasons for that is KMS have not provided organization members with sufficient intrinsic motivation about knowledge creation, diffusion and application. Therefore, this study proposes a concept called psychological knowledge ownership as intrinsic motivation factor that facilitates knowledge creation and examines its antecedents and consequences. The research results show that reputation, self-efficacy, and expertise sharing have impacts on psychological knowledge ownership, which in turn influences knowledge creation attitude. In conclusion, we discuss both theoretical and practical implications of this research and suggest its limitations.

• 경영과정보연구
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• 제32권3호
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• pp.173-188
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• 2013

중고등교과 관련 이러닝은 사용자(학습자)와 구매자(학부모)가 다른 경우가 많다. 본 연구는 이러닝사용자와 구매자의 선택행동이 다를 것이라는 가정을 실증하였다. 분석결과를 요약하면 다음과 같다. 전체소비자를 대상으로 할 경우 이러닝 강좌에 대한 인지된 유용성, 상호작용성, 사이트 명성은 소비자의 수강의도에 긍정적인 영향을 주었지만, 콘텐츠품질은 회귀되지 않았다. 그러나 이러닝사용자(학습자)집단에서는 상호작용과 인지된 유용성, 콘텐츠 품질은 영향을 주었지만 명성은 회귀되지 않았다. 구매자(학부모)집단은 명성과 인지된 유용성에 영향을 받은 반면, 콘텐츠품질이나 상호작용성에는 영향을 받지 않았다.

• International Journal of Computer Science & Network Security
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• 제21권8호
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• pp.182-186
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• 2021

The market for smart phones has been booming in the past few years. There are now over 400,000 applications on the Android market. Over 10 billion Android applications have been downloaded from the Android market. Due to the Android popularity, there are now a large number of malicious vendors targeting the platform. Many honest end users are being successfully hacked on a regular basis. In this work, a cloud based reputation security model has been proposed as a solution which greatly mitigates the malicious attacks targeting the Android market. Our security solution takes advantage of the fact that each application in the android platform is assigned a unique user id (UID). Our solution stores the reputation of Android applications in an anti-malware providers' cloud (AM Cloud). The experimental results witness that the proposed model could well identify the reputation index of a given application and hence its potential of being risky or not.

• 대한물리의학회지
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• 제8권1호
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• pp.19-27
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• 2013

PURPOSE: The purpose of this study is to look into relationship between image of physiotherapist and self-esteem of physiotherapy students and desirable image of physiotherapists offer to establish basic materials. METHODS: The subjects of this study are consist of 603 students of department of Physical therapy university and college in Busan and Kim-hae. Data are collected from June 9 to July 9 in 2011 by structured questionnaires. RESULTS: The result are as follows. 1. at the physiotherapist image score, the highest score question is "Physiotherapist is specialist"(3.45) and the lowest score question is "Physiotherapist is treated samely with doctor"(2.15). 2. at the self-esteem score, the highest score question is "I think that I am at least as valuable as others"(3.37) and the lowest score question is "I can be poorly sometimes"(2.81). 3. at the static results of physiotherapist image score gap by general characteristics, there are significantly different in gender(t=2.27, p=.02), similar profession distinction(t=4.30, p=.00), major satisfaction(t=5.74, p=.00), school system (t=-2.54, p=.01). 4. at the static results of self-esteem score gap by general characteristics, there are significantly different in years (f=5.14, p=.00), gender(t=4.09, p=.00), religion(f=2.87, p=.04), similar profession distinction(t=3.97, p=.00), major satisfaction(t=4.26, p=.00). 5. at the static results of good reputation of physiotherapists increase self-esteem of physiotherapy students score question are significantly different(r=0.53, p=.00). CONCLUSION: Accordingly, these results of this study that there is a very correlation between image of physiotherapist and self-esteem of physiotherapy students. Therefore, good reputation of physiotherapists increase self-esteem of physiotherapy students.