• Journal of KIISE:Computing Practices and Letters
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• v.14 no.2
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• pp.171-179
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• 2008

RBAC(Role based Access Control) is effective way of managing user's access to information object in enterprise level and e-government system. The concept of RBAC is that the access right to object in a system is not directly assigned o users but assigned by being a member of a role which is defined in a organization. RBAC is utilized for controling access range of privacy but it does not support the personal legal right of control over information and right of limited access to the self. Nor it contains the way of observation of privacy flow that is guided in a legal level. In this paper, extended RBAC model for protecting privacy will be suggested and discussed. Two components of Data Right and Assigning Data Right are added to existed RBAC and the definition of each component is redefined in aspect of privacy preservation. Data Right in extended RBAC represents the access right to privacy data. This component provides the way of control over who can access which privacy and ensures limitation of access quantity of privacy. Based on this extended RBAC, implemented examples are presented and the evaluation is discussed by comparing existed RBAC with extended RBAC.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2001.05a
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• pp.114-128
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• 2001

정보화시대를 맞이하면서 컴퓨터와 통신의 결합체인 정보통신의 획기적인 발전에 의해 방대한 데이터의 신속·정확한 처리가 가능하게 되었으며, 이를 바탕으로 다양한 소비자의 요구에 효율적으로 대웅할 수 있게 되었다. 즉, 이러한 정보화의 급속한 발전과 더불어 개인의 다양한 사생활 영역으로부터의 개인정보들이 좀더 용이하게 축적되고 이용될 수 있게 되었다. 반면 이러한 현상은 개인정보의 무분별한 수집, 유통 및 오·남용을 유발할 수 있다는 측면에서 그 심각성이 더한다고 할 수 있다. 따라서 본 연구에서는 이러한 급진적 변화양상 속에서 개인의 정보를 취급하는 많은 기업 및 기관의 태도에 대해 개인이 지닌 의식을 조사하여 이를 토대로 실증적 Instrument를 제시하고자 하며, 이를 바탕으로 개인정보를 필요로 하는 관계기업들 즉, 전자상거래나 온라인에서의 마케터들에게 개인정보에 대한 소비자 의식을 파악할 수 있게 하여 앞으로 이에 효율적으로 대처할 수 있는 지침으로서의 역할을 제공하고자 한다.

• Smart Media Journal
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• v.12 no.7
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• pp.27-42
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• 2023

The development of cloud services and IoT technology has radically changed the cloud environment, and has evolved into a new concept called fog computing and F2C (fog-to-cloud). However, as heterogeneous cloud/fog layers are integrated, problems of access control and security management for end users and edge devices may occur. In this paper, an F2C-based IoT smart health monitoring system architecture was designed to operate a medical information service that can quickly respond to medical emergencies. In addition, a role-based service access control technology was proposed to enhance the security of user's personal health information and sensor information during service interoperability. Through simulation, it was shown that role-based access control is achieved by sharing role registration and user role token issuance information through blockchain. End users can receive services from the device with the fastest response time, and by performing service access control according to roles, direct access to data can be minimized and security for personal information can be enhanced.

• Korean Journal of Cognitive Science
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• v.27 no.3
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• pp.407-420
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• 2016

We live under the consequences of countless decisions, among which significant number of decisions is made by representatives acting on behalf of us. However, individuals often make disparate decisions depending on which identity they are assigned as an agent or with which opponent they are interplaying. In the current research, behavioral discontinuity depending upon actor identity and social relationship was investigated using the ultimatum game. Participants behaved in a more economically rational way when they acted as a group representative compared with when they made decisions as a private individual. However, the direction of the individual-representative discontinuity was reversed when rivalry came into play. Furthermore, more fairness was requested to accept the offers in the interaction with the rival compared with the neutral countergroup. Especially when interacting with the rival group, participants showed contrasting level of decision bias - measured by rejection rate toward unfair offers - according to the degree of mind attribution to the opponent. Specifically, the greater participants attributed a mind to the rival group, the more they rejected the unfair offers from it. The present research is important in that it provides insight into individuals' decision-making in a group context, which sometimes forgoes the financial gain of the entire group and ultimately leads to the sub-optimization of social welfare.

• 정보화사회
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• s.151
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• pp.22-27
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• 2001

• 한국노년학
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• v.39 no.3
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• pp.429-449
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• 2019

The purpose of this research is both to analyse the dynamics of welfare pluralism in the personal social service policy for elderly British people and to provide policy implications based on analysis of the post World War II time era up until the end of the New Labour Government. Content analysis of government and parliament reports, minutes, scripts for party conferences, legislations, declassified government documents, and institutes' reports of the Conservative, Labour, and New Labour Governments from 1945 to 2010 shows that the governments played only assistive roles in welfare pluralism at any given point in time. The negative experiences of elderly British can be attributed to the unbalanced structure of roles held by public and private institutions for personal social services. They ultimately have important policy implications for the foundation of welfare pluralism in elderly Korean community care by the Moon Jae-in government.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.416-423
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• 2021

Drawing upon research in affect and social identity theory, this study examines when and how an individual's trait positive affect (TPA) exerts a significant effect on the person's organizational citizenship behavior directed toward individuals (OCBI). A moderated mediation model was tested by using the data of 293 employees nested in 66 work groups. Results demonstrate that the indirect effect of TPA on OCBI mediated by group identification (GI) is significantly positive only when perceived group positive affect (PGPA) is low, highlighting the substituting role of PGPA in the relationship between TPA and GI. The significant conditional indirect effects at the low level of PGPA suggest that TPA functions as significant, affective resources for enhancing GI and consequently increasing OCBI of the focal member when PGPA is low. By contrast, TPA's role in enhancing GI becomes redundant when PGPA is high. The current analysis reveals potential complementary functions of TPA and PGPA in explaining subsequent identity cognition and individual behavior.

• Ceramist
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• v.7 no.1
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• pp.61-65
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• 2004

새로 시작된 21세기, 우리나라를 비롯한 OECD 국가들의 정책 방향을 결정하는데 있어서 가장 중요한 지표로 대두되는 것 중의 하나가 국가를 이루고 있는 국민 개개인의 행복 추구라고 할 수 있다. 각 개인이 건강하고 윤택한 생활을 보장받기 위해서는 국가의 사회복지 제도의 개선과 함께 살아가는 과정에서 부딪히게 되는 재난 또는 사고로부터 개인의 불행을 최소화하는 시스템 지원과 불가피하게 찾아오는 사고나 질환 혹은 노화에 대비해 신체적 장애를 극복할 수 있는 의료체계의 확립이 필수적이라고 할 수 있다. 특히 우리나라와 같이 고령화 사회로의 전이가 급속히 진행되고 있는 개발도상국에서는 의료체계가 단순한 생명 연장이 아니라 사회 구성원으로써의 역할을 다할 수 있도록 지원해주는 방향으로 재건할 필요가 있다.(중략)

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.308-315
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• 2007

상황 인지 컴퓨팅에서 상황정보 추론 기능은 상황정보 관리를 위해 중요한 기능 중의 하나이다. 상황정보 추론 기능은 하위 레벨의 상황정보들로부터 사용자의 상황을 나타내는 상위 레벨의 상황정보를 제공한다. 인프라 기반 지능형 공간에서 중앙 집중 형의 상황정보 관리 시스템은 상황정보 추론을 위한 자원 소모를 고려할 필요가 없었다. 하지만 자원이 제약된 장치들로만 구성된 개인 지능형 공간에서는 공간 내 전체의 자원 소모뿐만 아니라 상황정보 관리자 역할을 하는 장치 (coordinator)들의 자원 소모가 최소화 되어야 한다. 본 논문에서는 중앙 집중적인 상황정보 추론 작업을 분배하여 개인 지능형 공간 내의 다른 장치들에게 작업을 분산시키는 상황정보 추론 작업 분배 기법을 제안한다. 제안된 분배 기법은 건강정보, 환경정보, 지리정보 같이 상황정보가 자주 발생하는 환경에서 더 효율적이다. 상황정보 추론작업을 분배 함으로써 상황정보 추론을 위한 개인 지능형 공간의 전체의 처리량을 크게 증가시키지 않으면서 코디네이터의 처리량을 줄일 수 있다. 본 논문의 작업분배 기법은 상황정보 추론의 역할을 하는 코디네이터와 분산된 로컬 상황정보 추론기능을 제안한다. 본 논문에서는 제안된 상황정보 추론 기능을 개인 지능형 공간을 구성하는 장치들에 각각 구현하고 상황정보 추론을 위한 처리부하를 측정하여 제안된 기법의 실행 가능성을 보였다.

• Journal of IKEEE
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• v.27 no.4
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• pp.548-555
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• 2023

With the advancement of the internet, the use of personal information in online interactions has increased, underscoring the significance of data protection. Breaches of personal data due to unauthorized access can result in psychological and financial damage to individuals, and may even enable wide-ranging societal attacks aimed at those associated with the victims. In response to such threats, there is active research into security measures using blockchain to safeguard personal information. This study proposes a system that uses middleware and IAM (Identity and Access Management) services to protect personal information in a BaaS (Blockchain as a Service) environment where blockchain is provided via the Internet. The middleware operates on servers where IAM roles and policies are applied, authenticates users, and performs access control to allow only legitimate users to access blockchain data existing in the cloud. Additionally, to understand the impact of the proposed personal information protection method on the system, we measure the response time according to the time taken and the number of users under three assumed scenarios, and compare the proposed method and research related to personal information protection using blockchain in terms of security characteristics such as idea, type of blockchain, authentication, and confidentiality.