• 융합보안논문지
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• 제2권2호
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• pp.49-58
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• 2002

역할기반 접근통제는 추상적 기본 개념의 임의적 접근통제나 강제적 접근통제에 비하여 응용 개념의 역할에 기반한 접근통제 모델이다. 모델은 BLP 모델에서 출발한 커널 단위의 액세스 제어의 제한적 기능과 달리 다양한 컴퓨터 네트워크 보안분야에 있어서 유연성과 적용성을 제공한다. 본 논문에서는 기존의 역할기반 접근통제 기본 모델인 $RBAC_0$ 모델에 주체 및 객체의 역할을 추가로 고려한 역할 계층을 포함하는 확장된 역할기반 접근통제 ($ERBAC_0$ : Exteded $RBAC_0$ 모델을 제안하였다. 제안된 $ERBAC_0$ 모델은 기존의 $RBAC_0$ 모델에 비하여 주체 및 객체 수준에서의 역할을 계층적으로 정교하게 할당하고, 할당된 역할에 기반하여 접근통제 서비스를 보다 유연하게 제공할 수 있다.

• 대한간호학회지
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• 제17권1호
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• pp.24-32
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• 1987

This study was designed to investigate the changes of nurses' role model, perceptions toward occupation, and self actualization value in terms of the phases of socialization process. Two hundred and sixty nine nurses working in clinical settings were randomly selected from 15 general hospitals despersed over Seoul and Kyungki province. Data were gathered by the standardized Perceptual Orientation Test, the Self-actualization Test, and Questionnaires on role models and phases of socialization process developed by the investigators from October 1985 to March 1986. The data were analysed by ANOVA and Pearson's Correlation Coefficient. The results were as follows: 1. The average time period required for the shift of phases of socialization process were; phase Ⅰ, role adjustment, took average 10 months of employment: Phase Ⅱ, interpersonal adjustment, 12 months: and Phase Ⅲ, role conflict, 15 months respectively. Conflict resolution, phase Ⅳ, began to take place 18 months of employment; and shifted to phase V, internalization and self-actualization at 25 months of employment. 2. Throughout 5 consecutive phase, the number of immediate superior nurse model was dominantly the highest among the role models. The number of head nurse role model increased at phase Ⅱ, phase Ⅲ, and phase Ⅳ. Respondents with school model in phase I tended to transfer to work model at phase Ⅱ. 3. The perceptions toward occupation were not significantly influenced by the Phases of socialization process. 4. The score of self-actualization value was not significantly influenced by the phases of socialization process. 5. In regard to perceptions toward occupation, nursing director model group showed significantly lower score in phase I (p<.01). 6. The comparison of self-actualization value between the 5 phases revealed significant difference in phase I: in particular among respondents with school model at p<.05. To conclude: 1. The phase Ⅲ of socialization process is the period of role conflict which occur at 15 months of employment, an6 conflict resolution, phase Ⅳ, begins at 18 months of employment on the average in clinical settings. 2. The immediate superior nurse and the head nurse are important role models for nurses all through their socialization process.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.1360-1364
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• 2004

This paper propose an extended model for role-permission assignment based on locations called "Enhanced Role-Based Access Control (ERBAC03)". The proposed model is built upon the well-known RBAC model. Assigning permissions to role is considered too complex activity to accomplish directly. Instead we advocate breaking down this process into a number of steps. The concept of jobs and tasks is specifically introduced to facilitate role-permission assignment into a series of smaller steps. This model is suitable for any large organization that has many branches. Each branch consists of many users who work in difference roles. An administration tool has been developed to assist administrators with the administration of separation of duty requirements. It demonstrates how the specification of static requirements can be done based on "conflicting entities" paradigm. Static separation of duty requirements must be enforced in the administration environment. Finally, we illustrate how the ERBAC03 prototype is used to administer the separation of duty requirements.

• 한국컴퓨터정보학회논문지
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• 제14권6호
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• pp.91-98
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• 2009

본 논문에서는 정보의 중요도나 관련성의 정보에 기반한 퍼지함수를 적용하여 강제적 접근통제정책의 비밀성과 무결성을 보장하였으며, 보안등급을 이용하여 접근권한의 흐름을 통제할 수 있는 흐름정책과 역할그래프 생성 알고리즘을 제시하여 상속특성으로 인한 권한남용문제를 해결하였다. 또한, 상업적인 환경에 적용이 가능하도록 정보특성별로 역할을 그룹핑하여 역할계층을 구성함으로써 새로운 역할을 추가하는 것이 용이하여 다단계 보안시스템에서도 효과적으로 접근통제를 할 수 있을 뿐만 아니라 대규모 보안시스템으로 확장할 수 있는 장점을 갖는다.

• 한국IT서비스학회지
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• 제11권3호
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• pp.269-285
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• 2012

The spontaneous interoperation is an important characteristic of ubiquitous applications and is closely related with mobility. The mobile components in ubiquitous environments are liable to appear in and disappear from one physical space to another. Because this characteristic certainly influences the structure and behavior of applications, they should adapt themselves to the changed environments by configuring their structure and behaviors. Consequently, developers are faced with the above challenging issue when they design and implement ubiquitous applications. The role concept is an efficient tool to model participant entities, their relationship, and collaboration, so role-based model are appropriate to describe a structure and behavior of software system. But, little attention has been given to reflect characteristics of ubiquitous applications. To tackle the problem, this study considers a ubiquitous application as a software organization which consists of software components and proposes an enhanced role-based application model for supporting spontaneous interoperation.

• 한국컴퓨터정보학회논문지
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• 제9권3호
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• pp.63-69
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• 2004

본 논문의 목적은 안전한 직무 기반 접근 제어 모델을 웹 기반 응용 시스템에 통합하기 위해 필요한 시스템 모델을 설계하는 것이다. 이를 위해 우선 시스템 아키텍처 설계에 본보기로 활용할 수 있는 유저풀 방식의 시스템 아키텍처 모델을 제안하고, 이 시스템 아키텍처가 웹 기반 응용 시스템에서 실제로 어떻게 직무 기반 접근 제어를 수행하는지를 보여주는 시스템 동작 모델을 제안하고자 한다. 그리고 본 논문에서 제안한 시스템 모델을 기존의 시스템과 비교 분석함으로써 기존 방식에 대한 개선 효과를 제시한다.

• 성인간호학회지
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• 제28권4호
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• pp.415-423
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• 2016

Purpose: This study was designed to identify the structural relationships among psychosocial variables related to sick role behavioral compliance among patients undergoing hemodialysis. Methods: The subjects were 476 patients from seven major hospitals and twelve dialysis centers located in D and P cities. Data were collected using self-report questionnaires. Data analysis was done by using SPSS/WIN 18.0 and AMOS 18.0 programs for structural equation modeling, to estimate the hypothesized model. Results: This findings support that a modified path model is efficient and appropriate to explain sick role behavioral compliance among hemodialysis patients. These factors account for 80.1% of the variance of sick-role behavioral compliance among hemodialysis patients. The variables having direct effect on sick role behavioral compliance were knowledge related to hemodialysis, social support, attitude, self-efficacy and intention. Conclusion: The modified model explains the integration process of psychosocial and behavior variables for sick-role behavioral compliance among patients undergoing hemodialysis.

• 인터넷정보학회논문지
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• 제7권1호
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• pp.17-30
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• 2006

인터넷과 웹이 활성화됨으로써 사용자는 문서, 디렉토리, 데이터베이스, 웹 페이지 등과 같은 자원들을 액세스하는 것이 훨씬 더 쉬워졌다. 그러나 이로 인하여 네트워크의 인증, 자원들을 액세스하기 위한 권한의 허가, 데이터의 정책과 보안 그리고 보안 시스템의 무결성과 같은 중대한 보안 문제들이 생기게 되었다. 본 논문에서는 기업 환경의 접근제어를 위하여 시간(기간과 주기)에 따른 제약으로 자원의 사용을 제한할 수 있는 GTRBAC(Generalized Temporal Role Based Access Control) 모델에 부역할(sub-role) 개념과 PBDM(Permission Based Delegation Model) 개념을 적용한 확장된 GTRBAC 위임(Ex-GTRBAC Delegation)모델을 제안한다. 제안 모델은 부역할을 사용하여 하위 역할에 할당된 권한을 상위 역할에 할당된 사용자가 모두 상속하여 실행할 수 없도록 하여 권한의 남용을 방지하여 최소권한의 원칙을 지킬 수 있도록 하고, 기업 환경에서 빈번히 발생하는 권한의 위임에 대해서 사용자 대 사용자 위임, 역할 대 역할 위임, 다단계 위임, 다중 위임과 같은 기능을 제공하여 기업 환경의 특성에 따라 다양하고 정교한 접근제어 정책을 적용할 수 있도록 한다.

• 한국치위생학회지
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• 제23권4호
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• pp.323-331
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• 2023

Objectives: This study was conducted to confirm the relationship between role conflict, positive psychological capital, and the psychological well-being of dental hygienists and to provide data for improving professionalism by increasing the psychological well-being of dental hygienists. Methods: From May 21 to June 22, 2023, 190 data were collected through an online community of dental hygienists. The collected data were analyzed IBM SPSS program ver. 23.0 and AMOS ver. 26.0. Statistical analysis methods, convergent validity test, structural equation model analysis, and model fit were performed using independent sample t-test, one-way ANOVA, confirmatory factor analysis, structural model fit test, and path analysis. Results: The lower the role conflict of dental hygienists and the higher the positive psychological capital, the higher the psychological well-being. The lower the role conflict, the higher the positive psychological capital. However, there was no mediating effect between positive psychological capital and role conflict, as it was not statistically significant. Analysis of the total effect of role conflict and positive psychological capital on psychological well-being revealed that positive psychological capital had a greater influence on psychological well-being than role conflict. Conclusions: Psychological well-being was related to positive psychological capital and role conflict. Future efforts are needed to improve positive psychological capital and psychological well-being of dental hygienists and reduce role conflict.

• 한국산학기술학회논문지
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• 제8권2호
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• pp.250-256
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• 2007

역할기반접근제어(RBAC)는 사용자나 네트워크상의 자원을 관리하는데 있어 오류를 최소화하기 위해 가장 적합한 접근제어 모델로 인정되고 있다. 본 논문에서는 역할기반 접근제어기법을 응용하여 기존의 RBAC에 Role의 상위 개념인 워크(work)개념을 도입한다. 워크개념을 이용하면 사용자는 자신의 업무를 수행시 역할(Role)이 아닌 좀더 추상적이고 포괄적 개념인 워크를 선택할 수 있게 된다. 워크는 사용자가 선택된 업무에 따라 정해지지만 정해진 워크에 따라 자신에게 부여되어 있는 권한이라 할지라도 현재 처리하고 있는 업무에 관련성이 없는 권한은 시스템적으로 차단되도록 하고자하는 방법을 제안한다.