• Journal of Navigation and Port Research
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• v.47 no.1
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• pp.25-36
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• 2023

To limit greenhouse gas emissions from ships, numerous environmental regulations and standards have been taken into effect. As a result, alternative fuels such as liquefied natural gas (LNG), liquefied petroleum gas (LPG), ammonia, and biofuels have been applied to ships. Most of these alternative fuels are low flashpoint fuels in the form of liquefied gas. Their use is predicted to continue to increase. Thus, management regulations for using low flash point fuel as a ship fuel are required. However, they are currently insufficient. In the case of LNG, ISO standards have been prepared in relation to bunkering. The Society for Gas as a Marine Fuel (SGMF), a non-governmental organization (NGO), has also prepared and published a guideline on LNG bunkering. The classification society also requires safety management areas to be designated according to bunkering methods and procedures for safe bunkering. Therefore, it is necessary to establish a procedure for setting a safety management area according to the type of fuel, environmental conditions, and leakage scenarios and verify it with a numerical method. In this study, as a feasibility study for establishing these procedures, application status and standards of the industry were reviewed. Classification guidelines and existing preceding studies were analyzed and investigated. Based on results of this study, a procedure for establishing a safety management area for bunkering in domestic ports of Korea can be prepared.

• Korean Journal of Construction Engineering and Management
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• v.14 no.3
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• pp.22-32
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• 2013

Generally, asset management procedure consists of exact information collection, decision of service level, analysis of aspiration level, analysis of financial condition and available budget, preparation of asset management plan, and value of modified asset. In this study, for the risk-based asset management, condition assessment and performance measuring, assessment of failure modes and risks, evaluation/selection of treatment options, and implementation of optimum solution are additionally included. For this, bridge inventory and performance measure considering risks are classified and method of quantitative/qualitative performance measure is suggested. Also, evaluation method of risk analysis for bridge asset management is suggested and basic research is carried out for applicable method of risk-based asset management. Using suggested risk procedure and method of risk-based bridge service level evaluation, it is possible to perform resonable asset management. Moreover, it is concluded that the proposed applicable method of risk-based asset management will provide a solution to contribute the development of systematical asset management for optimal decision making and prototype asset management system.

• Korean Business Review
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• v.22 no.1
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• pp.45-75
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• 2009

Previous researches of organizational citizenship behavior have been focused mainly on organizations, and there have been only a few studies on the organizational citizenship behavior of nonprofit organizations. In particular, few empirical studies have been made on the relations among variables affecting the organizational citizenship behavior of profit and nonprofit organizations. Thus, this study attempted comparative analysis. According to the result of the analysis, in profit organizations, the fairness of procedure, emotional commitment and continuous commitment had a significant effect on organizational citizenship behavior, as well as the fairness of distribution and perception of organizational support. In nonprofit organizations, on the contrary, the fairness of distribution, the fairness of procedure, and perception of organizational support were insignificant, and only emotional commitment and continuous commitment had a significant effect on organizational citizenship behavior. This study is meaningful in that it comparatively analyzed the effects of organization members' perception of fairness on organizational citizenship behavior in profit and nonprofit organizations, and its outcome may be utilized as a reference in future researches but it has a problem in external validity that poses a limitation in its generalization.

• The Journal of Korean Association of Computer Education
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• v.11 no.1
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• pp.33-46
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• 2008

There exist many differences between new Informatics curriculum and the current Computer curriculum. Since the new curriculum introduces new section of "Problem-solving methods and procedures" which are not included in current computer curriculum, it is required to define and specify objectives and content units of "problem solving methods" and "programming" topics for the new section. In this paper, we define and specify the objectives and detailed contents by surveying various computer curriculums used in many other countries. Then, the specified objectives and content units are validated by a group of computer education experts. The final results of specified objectives show that areas of "comprehension", "application" and "synthesis" take relatively high percentage over the other areas. In the content specification, we set the content structure by describing how to solve a given real-world problem with a non-computerized way, followed by representing or transforming it with a corresponding computerized model.

• Korean Journal of Construction Engineering and Management
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• v.10 no.4
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• pp.129-138
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• 2009

The role and importance of VE have been enlarged since VE application was mandatory by law in public sector in March, 2000. Public organizations have widened the technological horizon through VE competitions and applied VE technique to private investment projects. Many studies have been carried out on function analysis and VE procedure. In practice it is common that clients make a decision one-sidedly on whether or not VE proposals are selected. The VE procedure itself is not smooth. This study gives some suggestions on VE appraisal procedure and criteria at the last phase on VE process in order to smooth the progress of VE. The results of this study can be used as a tool to improve efficiency in the management of VE.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.2
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• pp.242-253
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• 1994

For the implementation of a Service Node, which is proposed in the companion paper to provide multiparty conference type sevices in the ISDN, we define some technical aspects such as connection control, service control procedure and control messages in this paper. Additional connection control procedures for the multiparty connections are annexed to the CCITT Rec. Q.931 and Q.764 for the ISDN subscriber and common channel interoffice signaling. A new set of service control procedures is also established according to the necessary service control functions. The messages for these procedures are formatted using user-to-user signaling parts of Q.931 and Q.763 messages not to affect on the existing signaling system. Some technical requirements of subscriber terminal for the multiparty services are also deduced.

• The Korean Journal of Applied Statistics
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• v.30 no.3
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• pp.487-501
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• 2017

A machine vision system (MVS) is a computer system that utilizes one or more image-capturing devices to provide image data for analysis and interpretation. Recently there have been a number of industrial- and medical-device applications where control charts have been proposed for use with image data. The use of image-based control charting is somewhat different from traditional control charting applications, and these differences can be attributed to several factors, such as the type of data monitored and how the control charts are applied. In this paper, we investigate the adjustment effect of image size and region of interest (ROI) size, when we use control charts to monitor grayscale image data in industry.

• Fire Science and Engineering
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• v.30 no.1
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• pp.86-95
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• 2016

Weight-bearing building materials are substantially weakened under high temperatures, and this is evident through the collapse of structures once engulfed by fire. Currently, there is no scientific or technological process of evaluating the real-time structural stability of a building whcih is engulfed by flame. There are many building design specifications which aim to reduce the risk of fire, but little consideration given to fire officer safety while operating in a dangerous building. This paper aims to provide direction within building policy in order to ensure the safe evacuation of fire-fighters in case of an impending building collapse. This paper suggests evaluation criteria for buildings which are damaged due to fire, autilizing current information on fire-resistant building design and a fire-resistant capacity.

• The Journal of Korean Association of Computer Education
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• v.9 no.5
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• pp.41-51
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• 2006

The purpose of this study is to verify learning components to be taught in each grade of middle schools, to propose hierarchical structures on algorithm content, and to resolve overlapping across related subjects. In order to verify learning components, four criteria were proposed. To evaluate practical application, they were implemented into The Proposal of Curriculum Revision on Computer Education in Middle School on MPE website. It was found that there was content overlapping between 'problem solving methods and procedures' in the middle school Informatics Curriculum and 'regulation and problem solving' in the Elementary Mathematics Curriculum. So it is needed to find a way to differentiate the contents of 'problem solving methods and procedures' from the other related subjects.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2010.04a
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• pp.77-80
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• 2010

최근 건설 프로젝트의 대형화 및 다양한 신공법들의 도입으로 불확실한 위험도 요인들이 점점 증가함으로써 일련의 시스템적 절차에 따른 리스크관리 (Risk Management)체계와 프로젝트 참여자들간의 효율적인 정보전달 방안이 요구되고 있다. 이를 위해 본 연구에서는 '리스크 시각화 시뮬레이션 구축 방법론'을 제시한다. 이는 최근 각종공사 정보 시각화부분에서 주목받고 있는 4D CAD 기술과 리스크 분석을 시스템적인 절차로 구성하여 연계한 방법이다. 시스템적 리스크 분석 절차는 리스크관리기법인 AHP 및 퍼지 분석기법을 동시에 적용하여 합리적인 리스크 정량화를 수행할 수 있도록 구성하였다. 그리고 이로부터 산출된 리스크 요인별 위험정도는 WBS 코드체계 기반으로 4D CAD의 공종과 연계되어 리스크 정도 수준에 따라 설정된 색상으로 시뮬레이션이 구현되도록 구성하였다. 이러한 방법론은 IDEF0 모델링 기법으로 제시함으로써 향후 시스템 구축의 기초 자료로 활용할 수 있도록 하였다.