• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2003년도 춘계학술대회논문집
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• pp.67-71
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• 2003

In order to manage a cluster system that consists of a number servers, management aspects such as configuration management, fault management, performance management, and user management should be considered. Especially, it is necessary to monitor performances for performance and fault management. An agent in each server collects performance counters, status changes, and events occurred in normal or abnormal states. The data collected are delivered to a collector sorter and processed in a report tool for performance analysts and management decision in the cluster system point of view, by detecting fault state and tracing out resource usage, service response, and response, and states until failed. In this paper we propose an architecture modeling of a performance report tool for proactive cluster system management. Some results on a cluster system are presented.

• 임상간호연구
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• 제29권3호
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• pp.337-347
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• 2023

Purpose: The objectives of this study were to categorize the conflict management types of preceptor nurses and determine the effects of these types on preceptors' role perception and core competencies. Methods: Data was collected from 192 preceptor nurses with at least two years experiences in general hospitals, from July 1 to July 31, 2022. Conflict management type, preceptor role perception, and core competency were investigated using structured instruments. The data was analyzed using K-means cluster analysis, Independent samples t-test, One-way ANOVA with Scheffé's test, and multiple regression analysis. Results: The conflict management types were categorized into four types; comprehensive type (cluster 1), integrating, obliging, compromising type (cluster 2), undifferentiated type (cluster 3) and obliging, avoiding type (cluster 4). The effect of conflict management types on preceptors' role recognition occurred in the following order of cluster 2 (integrating/obliging/compromising type), cluster 1 (comprehensive type), and cluster 4 (obliging/avoiding type). Next, cluster 1 (comprehensive type), cluster 2 (integrating/obliging/compromising type), and cluster 4 (obliging/avoiding type) were shown in the order of the impact on the core competencies of the preceptor. Conclusion: When preceptor nurses use a mixture of various attributes of conflict management evenly, they have been shown to demonstrate effective preceptor role recognition and core competencies. Therefore, it is proposed that future development of conflict management training programs for preceptor nurses should begin with identifying their conflict management type, followed by creating a program that addresses any deficiencies.

• 실천공학교육논문지
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• 제6권1호
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• pp.31-36
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• 2014

지능융합 클러스터는 전기전자정보통신, 컴퓨터공학부, 건축공학부, 디자인공학과로 구성된 학제간 융합 프로그램이다. 지능융합 클러스터의 효과적인 운영방안을 도출하기 위하여 클러스터 소속의 학생과 교수를 대상으로 설문조사를 실시하고, 이 설문을 바탕으로 효과적인 운영안을 도출하였다. 운영안은 교과과정 운영 개선과 연구 활성화를 위한 두 가지 측면으로 제시되었다.

• 한국정보시스템학회지:정보시스템연구
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• 제17권3호
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• pp.135-152
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• 2008

Basically within a special regional area, a regional cluster seems to be based on core competencies of individual intra-cluster companies and collaboration among them. Information infrastructure has been emphasized as on one of competitive factors of a regional cluster, and it can be organized using collaboration system architecture integrated with each company's internal systems for efficient supply chain operation. As one of technical methods to prepare the system infrastructure supporting the collaboration of companies in a regional cluster, the Web Services can be effectively used. In this paper, a collaborative information system infrastructure for a regional cluster is suggested within the scope of supply chain management. And the efficiency of the proposed alternative is appraised with the features of a regional cluster.

• 한국식생활문화학회지
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• 제26권6호
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• pp.574-582
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• 2011

The aim of this study was to classify Korean consumers based on their food-related lifestyle type, and to investigate the relationship between sushi consumption and food-related lifestyle type. Self-reported questionnaires were completed by 300 Korean adults. The SPSS 18.0 program was used to analyze the samples. Data was analyzed by frequency, descriptive factor, reliability, cluster analysis, ANOVA, and chi-square test. A factor analysis extracted four factors comprising foodrelated lifestyle, which we named Health-seeking (factor 1), Taste-seeking (factor 2), Convenience-seeking (factor 3), and Economy-seeking (factor 4). According to a cluster analysis based on those four factors, consumers were classified into three clusters. Cluster 1 was the Taste and Health-seeking cluster, Cluster 2 was the Convenience-seeking cluster, and Cluster 3 was the Passive Eating Habits cluster. The results also indicated that the selection attributes of each cluster were significantly different in terms of perception, the global state of sushi, sushi preference, frequency, companions, place of sushi consumption, and preference for different sushi sub-ingredients. Based on these results, consumer characteristics in the sushi market are discussed.

• 디지털산업정보학회논문지
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• 제10권2호
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• pp.75-82
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• 2014

MANET has various types of attacks. In particular, routing attacks using characteristics of movement of nodes and wireless communication is the most threatening because all nodes which configure network perform a function of router which forwards packets. Therefore, mechanisms that detect routing attacks and defense must be applied. In this paper, we proposed hierarchical structure attack detection techniques in order to improve the detection ability against routing attacks. Black hole detection is performed using PIT for monitoring about control packets within cluster and packet information management on the cluster head. Flooding attack prevention is performed using cooperation-based distributed detection technique by member nodes. For this, member node uses NTT for information management of neighbor nodes and threshold whether attack or not receives from cluster head. The performance of attack detection could be further improved by calculating at regular intervals threshold considering the total traffic within cluster in the cluster head.

• 한국콘텐츠학회논문지
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• 제9권9호
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• pp.105-113
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• 2009

클러스터 기반의 라우팅 기법에서의 안전한 데이터 통신을 위해서는 기존의 키 관리 방식은 적합하지 않다. 왜냐하면 클러스터 기반에서는 매 라운드 마다 클러스터 헤드가 변경되기 때문에, 안전한 통신을 위해 각 멤버 노드들과 인증이나 공유키 설정 단계를 거쳐야 한다. 또한 기존의 키 관리 메커니즘에서는 대부분 센서 네트워크 안의 모든 노드에 대해 이동성을 부여하지 않았기 때문에, 노드의 이동성을 고려하게 되면 안전한 통신을 위한 커다란 오버 헤드가 발생한다. 따라서 본 논문에서는 이동성과 새로운 노드의 삽입이 빈번한 경우에도 안전하고 효율적인 클러스터 기반에 적합한 키 관리 메커니즘을 제안한다.

• 디지털융복합연구
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• 제14권9호
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• pp.309-315
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• 2016

무선 모바일 네트워크 환경에서 노드 이동성은 에너지 소모를 가중화시킨다. 본 논문에서는 노드 이동성으로 인한 에너지 소모를 줄이고, 클러스터 멤버 노드의 수명 주기를 연장시키기 위하여 클러스터 기반의 노드 관리 알고리즘 (CNMA: Cluster-based Node Management Algorithm)을 제안한다. 제안된 CNMA 알고리즘은 클러스터 내에서 클러스터 헤더 노드와 멤버 노드들의 이동성을 추적하고 이들의 관계를 주기적으로 모니터링함으로써 에너지 잔량을 분석한다. 그리고 노드들의 상태 전이 과정을 분석하여 클러스터링 분할과 병합을 수행한다. 본 연구의 목적은 노드 이동성으로 발생된 에너지 소모를 최소화하기 위한 것이다. 시뮬레이션 결과를 통하여 제안된 알고리즘이 이동성으로 인한 에너지 소모를 효율적으로 제어할 수 있음을 보이며, 에너지 수명 주기가 향상됨을 보인다.

• 한국병원경영학회지
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• 제9권1호
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• pp.95-114
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• 2004

The purpose of this study was to identify the relationship between organizational culture based on the competing values approach, human resource management practices and organizational performance at a hospital. Participants were 138 employee in a general hospital. Data were collected during May, 2003 using four structured instruments. The data were analyzed using Chi-square test, One-way ANOVA, $scheff{\acute{e}}$ test and Cluster analysis. Three clusters were derived from cluster analysis. The first cluster consisted of cultures which were mixed developmental, consensual, hierarchial and rational culture equivalently. The second cluster consisted of the weak cultures, which was lower score than other clusters. The third cluster consisted of strong comprehensive cultures, which had higher score than other clusters. In the three clusters, hierarchial and rational culture were superior. The difference between human resource management practices and organizational commitment in organizational performance according to organizational culture clusters was found to be statistically significant. The cluster which had strong comprehensive cultures, in contrast to other clusters, more significantly affects on human resource management practices and organizational commitment. However, the strength of organizational culture does not have a significant effect on customer oriented service performance in organizational performance. These results showed that types of organizational culture were significantly related to human resource management practices and organizational commitment, and understanding the existing culture is essential to develop the organization of hospitals.

• 한국콘텐츠학회논문지
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• 제10권9호
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• pp.348-362
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• 2010

최근 산업클러스터 전략과 지식경영 요소를 도입하여 지역특화산업을 성장동력으로 육성하려는 노력이 증가하고 있는 가운데 지식경영의 성공요인들이 과연 농산업분야의 기업 경영성과에도 영향을 미치는지 여부를 검증하는 연구가 필요하다. 따라서 본 연구는 순창장류산업을 연구분석 대상으로 하여 지식경영이 농산업클러스터 내 기업의 경영성과 향상에 미친 영향에 대해 살펴보았다. 분석 결과, 지식경영 성공요인 중 '학습문화', '네트워크', '지식공유활동', '지식창조활동' 수준이 높을수록 기업경영 성과가 향상된다는 점을 확인하였다. 또한 이 과정에서 산업클러스터 특성이 지식경영과 경영성과와의 관계를 촉진시키는 조절 변수로서 기능하는지를 분석한 결과, 산업클러스터 특성들이 지식경영 성공요인 중 지식공유활동과 네트워크 요인을 더욱 증대시켜 기업경영성과를 향상시킨다는 것을 알 수 있었다. 끝으로 순창장류산업클러스터가 지식경영 발전단계 중 준비기를 거쳐 도입기에 도달했음을 분석하고, 성숙기와 완성기로 나아가기 위한 구성요소를 제시하였다.