• The Transactions of the Korea Information Processing Society
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• v.3 no.2
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• pp.242-250
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• 1996

Communications on hypercube nodes are done by explicit message routing. So efficient message routing is very important for the performance of hypercube multicomputers. However, hypercube nodes can be faulty due to hardware and/o r software problems, which is called an injured hypercube. A reliable hypercube system should tolerate the problems. One of the methods to enhance reliability on injured hypercube is to use fault-tolerant message routing algorithms. In this paper, we propose a message routing algorithm with possible shortest distance using disjoint paths. To analyze the performance, the algorithm is simulated and evaluated.

• Journal of the Korean housing association
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• v.26 no.1
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• pp.53-60
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• 2015

Community is crucial for human beings not only because they are born with communal self but also because social cooperation is more efficient than competition in many cases. Human beings are defined as Homo communicus living in residential community which is important for the fulfillment of their primary needs. Residential community is an 'intimacy zone' where personal and emotional interactions are made. This study aims at examining the health of residential community in Korea by exploring the level of place attachment and neighborhood trust. Previous studies indicate that place attachment and trust are influenced by three dimensions such as residents' characteristics, house types and regional environment. This study conducted a nationwide questionnaire survey and it shows that place attachment moulds neighborhood trust. The results of path analysis demonstrates that place attachment and trust appear high in detached house areas. Age of residents also gives positive influence on the level of place attachment and neighbourhood trust. This result gives significant policy implications for the development of residential community in Korea. Residential community as an intimacy zone has been eroded and desperately needs to be revitalized. For this, more concern should be given to the issue of desirable size of residential community and the types of houses. Detached house area must be supported by governmental policies.

• KDI Journal of Economic Policy
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• v.16 no.1
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• pp.175-194
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• 1994

본고(本稿)는 최근 경험하고 있는 경제자율화의 부진 이유가 '경제과학(經濟科學) 만능사상(萬能思想)'에서 나오는 경제관료나 경제학자들의 "시장(市場)보다 더 많아 안다"는 자만과 이에 따른 정부(政府)의 시장역할(市場役割)에 대한 불신(不信)에 있다고 보고, 시장질서(市場秩序)에 대한 신뢰회복과 경제학의 한계에 대한 인식이 앞서야 실질적(實質的)인 경제자율화(經濟自律化)가 가능할 것이라고 주장하고 있다. Hayek의 사회철학관(社會哲學觀)과 최근의 내생적(內生的) 경제제도론(經濟制度論)에 의하면 시장질서의 본질은 그 자생성에 있으며, 그 일부로서의 경제제도와 조직은 내생적으로 보다 나은 구조로 진화해 나간다. 그리고 이러한 진화를 촉진시키는 힘은 바로 경제주체(經濟主體)들간의 자유(自由)로운 경쟁(競爭)에서 나온다. 경쟁(競爭)은 미지(未知)의 가능성(可能性)을 찾아내는 발견과정이기 때문이다. 경제학은 경제현상(經濟現象)의 미래에 대한 대체적인 윤곽을 그리는 것(mere pattern prediction) 이상의 구체적인 청사진을 예측할 수는 없다. 구체적인 모습은 바로 경쟁을 통해 찾아갈 수밖에 없다. 자율화(自律化) 이후의 미래모습은 경제학자나 경제관료들보다도 시장경쟁(市場競爭)의 발견력(發見力)에 의해 찾아가는 것이 더 효과적이며 바람직하다. 이러한 인식하에 본고(本稿)는 앞으로의 정부경제정책(政府經濟政策)의 바른 방향은 시장개입(市場介入)을 통해 경제모습을 세세하게 그려는 데 있는 것이 아니라, 시장경쟁에 의한 발견과정이 원활해지도록 자율화를 통해 경쟁(競爭)을 창달함으로써 경제질서(經濟秩序)의 진화(進化)를 도모해 주는 데 있다고 주장하고 있다.

• Proceedings of the KIEE Conference
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• 2006.07b
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• pp.713-714
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• 2006

$SF_6$ 가스절연 Recloser는 선로에 일시적인 과전류가 발생하면 개방 후 자동 재투입 하면서 선로의 정상적인 운전상태를 회복하고, 영구 고장 시에는 정해진 Sequence에 따라 개방, 투입을 반복한 후 개방완료 상태에 이르게 하는 보호기기이며, 조작부는 주로 Solenoid Actuator 방식을 채택해왔었다. 그러나 Solenoid Actuator 방식은 구조가 복잡하고 부품수가 많은 단점이 있어 최근에는 사용 부품수를 획기적으로 감소 시키고 조작 신뢰성을 증대시킨 Magnetic Actuator 방식을 채택하여 사용하는 경향을 보이고 있다. 이 Magnetic Actuator 방식은 구조가 간단하고 부품수가 적어 높은 신뢰성을 확보할 수 있고 유지 보수가 거의 필요하지 않는 장점을 가지고 있다. 이에 본 논문에서는 $SF_6$ 가스절연 Recloser의 조작부에 Magnetic Actuator 방식(이하 PMA (Permanent Magnetic Actuator))을 채용 하였으며, 이를 적용하기위한 입력전원 및 투입, 개방 코일을 패러미터로 하여 PMA의 동적특성을 실험하였으며, 이 실험 자료에 근거하여 27[kV] $SF_6$ 가스절연 Recloser의 PMA 조작부를 설계 및 제작하였다.

• Journal of the Institute of Electronics and Information Engineers
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• v.54 no.2
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• pp.151-156
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• 2017

Communication performance requirements are described as QoS parameters in multimedia communication Protocols including SCTP. One of the important QoS parameters is the reliability of the transfer. As a QoS parameter, the reliability defines error detection, report and correction mechanisms. Including SCTP, conventional error control mechanisms, however, do not consider the integrated viewpoint of multimedia data. In this paper, I have designed and proposed the multimedia oriented error control method based on multimedia characteristics. The proposed scheme should have the reduction effect of the communication resources such as frame buffer, procesing power and bandwidth as well as satisfy the requirements of users.

• Journal of KIISE:Computing Practices and Letters
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• v.11 no.4
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• pp.305-311
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• 2005

Flash memory software running on cellular phones and PDAs need to be tested extensively to cope with abrupt power and media faults. For those tests, we designed and implemented a Flash memory emulator with fault injection features. The fault injection tester has provided a helpful framework for designing fault recovery schemes and also for analyzing fault damages to the FTL (Flash Translation Layer) and file system for a Flash memory based system. In this paper, we discuss Plash memory fault types and fault injection features implemented on this Flash memory emulator. We then discuss in detail a design flaw revealed during fault injection tests. Specifically, it was revealed that a scheme that was believed to improve reliability instead, turned out to be harmful. In addition, we discuss post-fault behaviors of the FTL and the file system.

• Journal of Korea Water Resources Association
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• v.55 no.2
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• pp.171-176
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• 2022

Citizen perception is increasingly emphasized as one of the critical factors in establishing public policies including river management. Our results show that citizens expect integrated river management by specialized river management organization. We found that the river condition was perceived more negatively than the actual status of water quality and river ecosystem by citizens. The gap in perception implies that it is important to restore the reliability of river management. Therefore, it is necessary to encourage organizations with public trust to participate in river management. and credible river management policies should be established and implemented.

• Korean Journal of Social Welfare
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• v.64 no.1
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• pp.31-52
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• 2012

This study has three objectives. First, it examines the relationship between organizational fairness and organizational commitment perceived by social workers in Korea. Second, it simultaneously examines mediating effects of organizational trust and organizational cynicism in the relationship between organizational fairness and organizational commitment. Third, it also examines the effect of social workers' perceived work value on the combined model by considering the unique characteristics of social work profession. This study employs the stratified cluster sampling method on social workers with more than two year work experiences in their current social service agencies that are located in Seoul and Kyungki province; finally it analyzes the responses from 564 social workers by using the method of structural equation modeling. This study has the following results: (1) there is a positive causal relationship between organizational fairness and organizational commitment perceived by social workers; (2) there is also a positive causal relationship between social workers' perceived work value and organizational commitment; and (3) in the mediating effects of organizational trust and organizational cynicism, there are no mediating effects in the relationship between organizational fairness and organizational commitment. This study discusses the importance of social workers' perceived work value and theoretical and practical implications of the results.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.441-451
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• 2015

The research objective of this study to provide a basis for university basketball players development university basketball players have recovered and fair confidence in the result of the determination of analyzes feel the referee judges recognized research players and referees and by the referee judged that consistency there is. The referee judged according to gender awareness and the impact analysis of college basketball players impartiality, promptness, consistency, reliability p <.05 level There was a statistically significant difference. The referee judged recognition and impact of the exhibition was a statistically significant difference in the p <.05 level of agility. The referee judged recognition and influence of the position was no statistically significant difference in the p <.05 level of agility. impact of the judgment determining recognition fairness, promptness, there was a statistically significant difference in the p <.001 level of reliability. The referee judged of the psychological state is assigned prejudice, there was a statistically significant difference in the p <.001 level.

• Korean Journal of Social Welfare
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• v.67 no.3
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• pp.181-201
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• 2015

This study conducted a longitudinal analysis to identify the impact of social capital on depression trajectories in later life. For data analysis, the Korean welfare panel data(2006-2012) was utilized and 4001 older adults aged 65 and older were included in the final sample. The results showed that social trust was significantly associated with depression scores at baseline but did not predicted the rate of change in depression over time. A higher level of reciprocity significantly predicted the faster decline in depression over time. For social participation through donation or volunteer, the percentage of participation was very low and it was not significantly related to depression trajectories. Finally as the satisfaction from social relationship becomes more positive, the rate of change in depression tended to decline faster over time. The results of this study indicates that in order to prevent or delay depression in later life, we should help older adults accumulate positive social capital such as social trust and reciprocity through active social interaction.