• Journal of the Korean Institute of Rural Architecture
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• v.18 no.1
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• pp.67-74
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• 2016

Establishing a renewal plan and practical use of Jungam temple, which exists natural monuments, including national treasures and Gangwondo cultural materials, at Jungseon is as important as anything else. To discuss the renewal plan and the practical use of Jungam temple, this thesis is composed with the next series of processes. First, this thesis presents examining a relationship between Jajang, who was a buddhist monk and caused a departure point of foundation of the temple, and Jungam temple is necessary; thus, the relationship of his architectural consciousness and Jungam temple was showed in this thesis. Second, this thesis demonstrates present conditions for extant facilities and features of the space structure for Jungam temple to look into architectural characteristics of Jungam temple. Third, this thesis shows preservation of Jungam temple because this temple is the historic cultural resource; in addition, this thesis explains restoring of lost elements for points, repairing shipments regarding the whole area of preservation targets, expansion of the area nearby historic cultural resources to make plans for maintaining Jungam temple. Finally, this thesis concludes the final result of Jungam temple to work towards becoming the contemporarily historic cultural resource by designating Jungam temple as the historic site and suggesting energization by public participation and experience programs to continuously manage Jungam temple.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2008.05a
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• pp.257-262
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• 2008

This study presents a detailed analysis of aircraft engine maintenance cost based on the relationships between engine performance and geometric parameters. Some trend equations based on the engine performance and maintenance database were developed for the estimation of shop-visit interval, work-scope, man-hours, material cost and Life Limited Part cost. The results show that this approach can give a more reasonable and detailed estimation of engine maintenance cost than older empirical methods.

• Proceedings of the Korea Water Resources Association Conference
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• 2006.05a
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• pp.1835-1839
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• 2006

최근 빈번히 발생하는 국지성 집중호우 등의 기상이변과 도시화로 인한 불투수 면적의 증가는 급격한 유출량의 변화를 가져와 홍수로 인한 피해를 가중시킬 수 있다. 따라서 홍수방어시설인 제방의 경우 발생가능성은 낮지만 확률홍수량에 따른 제방 여유고의 평가도 필요하다. 본 연구에서는 대표적 도시하천인 탄천을 대상으로 하천정비기본계획(2000)에 수립된 계획홍수량과 최근 7년간 실측한 관측 결과로 계산한 확률홍수량을 조건으로 각각의 경우에 따른 한강 합류부(하류단)부터 상류 9 Km까지의 제방 여유고를 국내와 국외의 설계기준으로 비교, 검토하였다. 검토조건으로는 계획홍수량에 대해서는 3가지 경우의 하류단 수위를 경계조건으로 설정하였고 확률홍수량(80년, 100년, 200년 빈도)에 대해서는 각각의 경우에 발생 가능한 하류단 수위를 경계조건으로 설정하였다. 검토결과 탄천의 경우 계획홍수량에 대해서는 대체로 안전측으로 나타났지만 계획빈도 이상의 확률홍수량에 대해서는 국내, 일본의 설계기준에 제시된 여유고보다 상류 일부구간에서 여유고가 부족한 경향을 보이는 것으로 나타났다. 제방 여유고를 미국(도시하천의 경우 최소 0.91 m)의 경우와 비교하여도 안전측에 속한다고 평가할 수 있다. 하지만 본 검토의 대상인 제방이외의 일부 수공구조물(교량등)에서 여유고가 일부 부족한 것도 확인할 수 있었다. 이에 새로이 하천정비를 실시할 탄천(2006년 예정)의 경우 이러한 부분에 대한 검토 및 보완이 필요할 것으로 사료된다.

• Journal of Korean Society of Disaster and Security
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• v.16 no.1
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• pp.23-35
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• 2023

Recently, the damage caused by natural disasters such as typhoons and localized torrential rains has been increasing rapidly. The Ministry of the Interior and Safety enacted a ｢law on safety management of small sized infrastructures｣ and local governments have to register small sized infrastructures with the National Disaster and Safety Management System (NDMS) until March 31st every year. Recently, each local government has ordered Safety inspections of small sized infrastructures and maintenance plans and six types of facilities, including small streams, small bridges, farm roads, access roads to village, inlet weirs, and drop structures are being surveyed and digitized into a database. Each facility is being evaluated for risk, and for those deemed hazardous, maintenance plans are being developed. However, since the risk assessment method of small sized infrastructures is not clear so that is conducted through visual investigation by field investigators, risk assessment is conducted in a subjective and ambiguous form. Therefore, this study presented a reasonable and quantitative risk assessment method by providing a quantitative evaluation indicator for small stream, which has the highest disaster risk among other small sized infrastructures, so that small sized hazard infrastructures can be selected to secure transparent evidence for improvement plans and action plans.

• Land and Housing Review
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• v.4 no.4
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• pp.333-348
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• 2013

The detailed current situation of urban renewal projects which have implemented in all over the country is sorted by regional and divisional groups, researching press reports. Problems in the progress of promoting urban renewal projects made the paper are analyzed in this research. This research examined the actual condition about urban renewal projects synthetically and then, deduced the following improvement plan. First, formulating long-term renewal plan is needed. Secondly, It should be changed into the gradual urban renewal project on a small scale according to various conditions of each local area. Finally, support of the central government in consideration of local conditions should be carried out.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1993.04a
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• pp.475-482
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• 1993

지금까지지 PERT/CPM기법은 대형 Project 및 건설공사등의 공정관리업무에 주로 활용되어 왔으며 공정관리분야에 커다란 기여를 해 왔다. 본 연구에서는 이러한 PERT/CPM기법의 새로운 적용분야로 각종설비의 정비(Maintenance) 또는 수리(Repair)작업에의 Approach를 시도했다. 에너지 설비는 제철소내 80여개 설치되어있으며 설비별 수리주기, 에너지수급 Balance 정비인원등의 요소를 고려해 년간 계획수립 후 수리를 실시하게 된다. 일련의 수리작업관리는 경험에 의한 수작업 공정표작성, 계획수립 및 진행관리등으로 공정관리에 많은 어려움을 겪고 있다. 이러한 수리작업 공정관리, 즉 수리계획수립, 진행관리 및 실적관리에 이르는 업무를 효율적으로 수행하기 위해 SAS(Strategic Application System) S/W를 활용하여 System을 개발하였다.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.668_669
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• 2009

상업운전이 개시된 이래 24년이 경과한 원자력발전소의 480V 저전압분배계통 차단기의 설비특성, 운전 및 정비경험, 현행 정비활동, 경년열화, 성능, 단종 분야를 검토하여 480V 저전압분배계통 차단기에서 제기될 수 있는 현안사항과 이를 해결하기 위한 일련의 수명관리계획을 도출하는 기술성 평가를 수행하였다. 기술성 평가를 통해 제시된 일련의 수명관리계획안에 대하여 비용 및 고장률 데이터를 근거로 EPRI의 LcmVALUE 프로그램을 이용하여 경제성을 분석하고 480V 저전압분배계통차단기의 최적 수명관리계획과 권고사항을 제시하였다.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.444-448
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• 2008

It was investigated to apply the information of the satellite imagery to the field of urban planning. Built-up area and road area are very important factors in the field of urban planning. To extract these information from the satellite imagery, landcover classes were categorized into the 4 classes, exterior space, built-up area, vegetation and shadow. And it was discussed what is needed for landcover classifications and essential factors on the information extraction.

• Journal of the Korea Society for Simulation
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• v.19 no.3
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• pp.55-62
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• 2010

This paper studies the problem seeking an efficient operational scheduling for battle ships in the Republic of Korea's navy. The ships' availability means that their main systems such as weapons, navigation and propulsion are in full operational readiness. If some of the major systems are not ready, then the ships should not be available for operations. It is required to maintain a high level availability under the limited resources as it determines the strength of ROK's navy. However, it will result in inefficiencies if some ships are operated without proper maintenance only to improve their availability. Thus, this study suggests the operational scheduling for two squadron ships that considers multiple objectives such as availability, overlapping maintenance, and deviation from available ships in a particular week. We applied NSGA-II algorithm to find better solutions for more efficient scheduling. The experiment result reached an efficient solutions after 1,500 generations. Two efficient operational schedules were compared on the basis of three multiple objectives among them.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.29 no.4
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• pp.137-147
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• 2011

This study aims to find out the construction process and planning characteristics of Suwon and Hwa-sung in 18th century from the point of water system. This study has an explanatory approach. The planning intents in the water system was driven out by analyzing various planning elements in relation to water system in the process of constructing Hwa-sung in 18th century. Using Entire Map of Hwa-sung, land registration map made in 1911 and topographic map of 1/10,000 scale made in 1917, water system and interpretation of spatial structure in Hwa-sung were analyzed. The results are as follows(Planning characteristics of the water system in Haw-sung in 18th century are as follows). Firstly, in determining the spatial structure and location of Hwa-sung, water system had an important role. Secondly, integrated drainage system was planned by the organization of natural and artificial water stream. Thirdly, the main street system and land use structure were planned in relation with water system. Fourthly, territoriality of main area was planned with water stream. Fifthly, ponds were constructed for flood control and they had important role as landscape elements. Sixthly, water stream was used as intentional BiBo element. As a result of the study, the weater system of Hwa-sung in 18th century was planned by the organization of natural and artificial water stream in relation with the location of new town and wide area's spatial structure, street system, land use structure, territoriality of main area, terriflood control, water quality protection, landscape, 비보 and urban daily life.