• Proceedings of the Korea Information Processing Society Conference
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• 2001.10a
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• pp.73-76
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• 2001

다중등급을 갖고 있는 대용량 데이터베이스 환경에서 각 보안등급을 갖고 있는 사용자가 데이터베이스에 접근할 때 확장된 강제적 접근제어(MAC:Mandatory Access Control) 방식과 역한 그래프(Role Graph)를 이용해 하위등급의 사용자가 상위등급의 데이터를 추론하거나 인지하는 데이터 유출을 방지하여 데이터의 무결성(integrity)과 데이터베이스 관리시스템(DBMS:Database Management System) 전체의 보안을 유지하며 각 보안등급의 데이터와 사용자를 효율적으로 관리하고 제어한 수 있는 역할관리 보안모델을 제안한다.

• Proceedings of the Botanical Society of Korea Conference
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• 2001.04a
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• pp.24-24
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• 2001

• Proceedings of the Zoological Society Korea Conference
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• 2000.10a
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• pp.255.1-255
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• 2000

No Abstract, See Full Text

• Proceedings of the Korean Society of Crop Science Conference
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• 2018.04a
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• pp.171-171
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• 2018

• Bulletin of the Korean Chemical Society
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• v.34 no.2
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• pp.361-362
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• 2013

• Journal of Korean Academy of Nursing Administration
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• v.12 no.1
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• pp.104-112
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• 2006

Purpose: The purpose of this study was to identify and compare role conflict and job satisfaction between nurses in ICU and nurses in general ward. Method: The subjects of this study consisted of 141 nurses employed at ICU and 201 nurses employed at general ward, who were recruited from 5 university hospitals with 500 beds located in Seoul and Gyeonggido. The instruments included role conflict scale developed by Kim and Park(1995) and job satisfaction scale translated and modified by Lee(1996). The collected data were analyzed using the SPSS WIN 10.0 program for descriptive statistics, t-test, ANOVA, and Pearson correlation coefficient. Result: In the two groups, there was a inverse correlation between role conflict and job satisfaction. In ICU, nurses' role conflict levels differed significantly depending on religion(p<.05), total experience(p<.05), scheduled to work as a nurse(p<.05). And nurses' job satisfaction levels differed significantly depending on total experience(p<.05), working period in current post(p<.001), scheduled to work as a nurse(p<.001), motive of choosing the nursing science(p<.01), and job satisfaction(p<.001). In general ward, nurses' job satisfaction levels differed significantly depending on marital status(p<.05), educational level(p<.01), total experience(p<.001), motive of choosing the nursing science(p<.01), and job satisfaction(p<.001). Conclusion: Summing up, the nurses at ICU showed higher level of role conflict than the nurses ay general ward. Therefore, it is needed to decrease the level of nurse's role conflict and improve their job satisfaction in ICU.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06b
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• pp.107-110
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• 2007

본 논문에서는 기업과 정부의 다양한 조직체계를 반영하고 워크플로우의 현실적/효율적 운영관리 및 여러 복잡한 직책에 의해 발생하는 복잡성 해결을 위해 적합한 접근제어 모델인 역할기반 접근제어(RBAC: Role Based Access Control)를 이용한 워크플로우 조직 관리 시스템에 관하여 기술하고 설계한다. 역할 기반 워크플로우 조직 관리 시스템은 앞으로 매우 성장 가능성이 높은 시장을 형성할 것으로 예상되며 다양한 조직체계를 반영하는 데 적합한 접근제어 모델이다. 현재 기업, 정부, 공공기관 등의 서로 다른 조직체계에 워크플로우를 적용하게 되는 경우 조직관리 시스템은 워크플로우 시스템에 있어서 필수 컴포넌트로 자리 잡고 있지만 기존 조직관리 시스템들은 보안문제나 동적인 조직의 관리에 문제점을 갖고 있는것이 사실이다. 따라서 본 논문에서는 "역할 기반 접근 제어"라고 하는 RBAC(Role-Based Access Control)의 기본 개념과 워크플로우 엔진과 역할기반의 워크플로우 조직관리 시스템간의 관계에 따른 역할기반 워크플로우 조직 관리 시스템을 제안, 설계한다.

• 한국전기화학회:학술대회논문집
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• 2003.10a
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• pp.8-8
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• 2003

• Molecules and Cells
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• v.19 no.2
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• pp.223-227
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• 2005

We have identified TMPRSS6, a novel type 2 transmembrane serine protease. TMPRSS6 possesses all the signature motifs of the family of transmembrane serine proteases (TMPRSSs), including a transmembrane domain, an LDL receptor class A (LDLRA) domain, a scavenger receptor cysteine-rich (SRCR) domain, and a serine protease domain. The substrate specificity of TMPRSS6 is slightly different from those of other TMPRSS family members. Combined with the finding that TMPRSS6 is expressed strongly in the thyroid and weakly in the trachea, this may indicate that TMPRSS6 has a specialized role.

• International Journal of Stem Cells
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• v.16 no.3
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• pp.269-280
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• 2023

Background and Objectives: The colonic epithelial layer is a complex structure consisting of multiple cell types that regulate various aspects of colonic physiology, yet the mechanisms underlying epithelial cell differentiation during development remain unclear. Organoids have emerged as a promising model for investigating organogenesis, but achieving organ-like cell configurations within colonic organoids is challenging. Here, we investigated the biological significance of peripheral neurons in the formation of colonic organoids. Methods and Results: Colonic organoids were co-cultured with human embryonic stem cell (hESC)-derived peripheral neurons, resulting in the morphological maturation of columnar epithelial cells, as well as the presence of enterochromaffin cells. Substance P released from immature peripheral neurons played a critical role in the development of colonic epithelial cells. These findings highlight the vital role of inter-organ interactions in organoid development and provide insights into colonic epithelial cell differentiation mechanisms. Conclusions: Our results suggest that the peripheral nervous system may have a significant role in the development of colonic epithelial cells, which could have important implications for future studies of organogenesis and disease modeling.