• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 전기설비
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• pp.31-33
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• 2005

The accelerating of industrial development causes electricity demand to increase. By that power equipments need high power, multi function and intelligence. Also consumers demand for guarantee power supplying of good quality and reasonable operating equipment. Also they require for reliance and stabilization of power facility. Therefore preventive maintenance of electric installation must be developed and improvement of domestic technical level is needed in the maintenance management of equipment. The diagnosis of trouble existence is technique that compares steady state with unusual condition, whereas the prediction technique makes a diagnosis of remaining equipments life. It is difficult for us to diagnose trouble existence of electric installation and to develop prediction method in building because of a wide scope for electric installation in building. And in this paper we will investigate diagnosis and prediction method for only switch part of electric installation in building.

• 한국실내디자인학회논문집
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• 제24권5호
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• pp.136-143
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• 2015

At this present, the world is in the era of digital and culture.Tourist resources through cultural infrastructure have been a crucial factor of a country's competitiveness. A Museum is tourism resource facility like one of core cultural infrastructures which provides experiential culture, history and tradition. The field of a planning and a design for a museum should be recognized like professional design industry.n Korea, the government has various laws and systems to support the design promotion policy but it is not sufficient. If you plan to extend the scope of the maintenance of law and institutions As today 'Exhibition Industry Development Act, which is responsible for maintenance, including a permanent exhibition area in the exhibition industry facilities will be efficient alternative. And also, it would like to analyze states of the orders in the exhibition design industry for past five years (2010 ~ 2014) and show the problems and alternatives. Exhibition business-related orders investigation into the recent five years to analyze and suggest improvements. In the delivery method it was found three types of goods, the services, the delivery method through the analysis of the enforcement order to the Corporation and that are mixed.If these alternatives has been reviewed and used for basic data to promote professional companies and designers for museums, it must be expected to be well worth a careful study.

• 반도체디스플레이기술학회지
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• 제18권4호
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• pp.87-91
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• 2019

The diagnosis of the failure for the existing electrical facilities was based on regular preventive maintenance, but this preventive maintenance was limited in preventing a lot of cost loss and sudden system failure. To overcome these shortcomings, fault prediction and diagnostic techniques are critical to increasing system reliability by monitoring electrical installations in real time and detecting abnormal conditions in the facility early. As the performance and quality deterioration problem occurs frequently due to the increase in the number of users of the motor pump, the purpose is to build an intelligent control system that can control the motor pump to maximize the performance and to improve the quality and reliability. To this end, a vibration sensor, temperature sensor, pressure sensor, and low water level sensor are used to detect vibrations, temperatures, pressures, and low water levels that can occur in the motor pump, and to build a system that can identify and diagnose information to users in real time.

• 농촌계획
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• 제25권1호
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• pp.89-97
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• 2019

This study aims to make a revitalizing plan for managing and maintaining of facilities which were installed after the rural development projects. The survey was conducted to examine some issues of operating facilities from the developing plan. There were some factors that should be considered in the establishment stage of the project plan when promoting rural development projects. Among them, the preservation and maintenance of rurality, consistency with business plans, connectivity with local resources, and ease of maintenance were less reflective than its importance. And for each facility, systematic consulting on appropriate scale and operational management plans and detailed planning is needed.. It's also necessary to plan action so that the local community can lead. The current or future rural development project will be succeeded when local governments support to strengthening their local groups or people's abilities.

• Elastomers and Composites
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• 제54권1호
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• pp.70-76
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• 2019

The function and purpose of the marine rubber fender, to prevent the damage of the ship and the mooring while the ship is being attached to the pier. However, maintenance of the fender after installation is not enough, because it is generally handled as an attachment facility. Estimation the life of a marine rubber fender is important in the maintenance of a port. When manufacturers design and produce marine rubber fenders, they do so according to various conditions such as the reaction force acting on the hull and docking vessel and deformation after absorbing the kinetic energy of the ship. In this study, a method for predicting and evaluating service life from the product design and development stage was established, in order to evaluate the durability of the marine rubber fenders. The SSp-300H and HSP-300H models were used to predict the service life. The method developed in this study, is expected to predict the service life of the marine rubber fender accurately and in a comparatively shorter time, thereby contributing to the evaluation standard and quality stability of the product.

• 농업과학연구
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• 제47권4호
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• pp.727-742
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• 2020

Point cloud-based 3D maps can obtain many kinds of information for maintenance work on forest road networks. This study was conducted to compare the importance of each factor to select the factors required for the mapping of 3D forest road maps. This can be used as basic data for attribute information required to maintain forest road networks. The results of this study found that out of a total of 30 indexes extracted for mapping 3D forest roads, a total of 21 indexes related to stakeholder groups were significantly different. The importance of the index required by the civil service group was significantly higher than that of the other groups overall. In the case of the academic group, the index importance for cut slope, fill slope, and drainage facility was significantly higher. On the other hand, the index importance for the forestry cooperative and forest professional engineer group was mostly distributed between the civil servants' group and the academic group. In particular, the type of drainage system showed the highest value among the detailed indexes. Overall, drainage related factors in this survey had high coefficient values. The impact of water on forest roads was the most important part in road maintenance. In addition, the soil texture had a high value in relation to slope stability. This is thought to be because the texture of the soil affects the stability of the slope.

• 대한토목학회논문집
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• 제31권1D호
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• pp.149-155
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• 2011

본 연구는 부산지역 공동주택 관리에 관한 주민인식을 조사하고자 아파트 운영관리에 관한 문제점 및 개선사항, 그리고 아파트 관리에 관한 세부항목별 주민인식 정도를 아파트 준공연수에 따라 비교분석하였다. 아파트 운영관리에 관한 문제점에서는 보수 보강에 관한 계획성이 미흡하며, 아파트 회계관리에 대한 투명성이 부족하며, 관리비가 과다하게 부과된다고 지적하였다. 따라서 개선사항으로는 관리비를 절감할 수 있는 운영방안이 강구되어야 하며, 관리비 집행에 관한 부정 부패를 방지하기 위해 주민들의 감시를 강화하기 위해 입주자대표회의의 적극적인 참여가 필요함을 강조했다. 아파트 관리에 관한 세부항목별 주민인식의 비교분석에서는 첫째, 일반적 관리에서는 세대간 분쟁조정 능력에 대해서는 부족하다고 인식하고 있었다. 둘째, 주민의 안전성에 관한 관리의 측면에서는 방범 예방 활동과 화재대비 관리, 가스시설 관리 등에 대하여는 상당 히 신뢰하고 있는 것으로 나타났다. 반면, 유지관리의 측면에 대해선 주민들의 불만이 존재하고 있었는데, 관리사무소의 보수 계획이 잘 이루어지지 않다고 인식하고 있는 것으로 나타났다. 셋째, 환경관리에서는 관리사무소의 청소 수목 관리가 잘되고 있는 것으로 인식하고, 휴게시설 관리가 잘 안 되고 있는 것으로 나타났다.

• 한국구조물진단유지관리공학회 논문집
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• 제27권6호
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• pp.55-61
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• 2023

본 연구에서는 항만시설물의 환경적인 요인과 열화 특성을 고려한 유지관리 방안을 수립하기 위한 기초연구로서 인천 및 부산 항만시설물을 대상으로 점검 보고서를 참고하여 열화 및 손상정도를 검토하였으며 현재 지침에서 제시하고 있는 열화환경평가와의 관계를 분석하였다. 인천 및 부산 항만시설물의 손상 정도를 분석한 결과 인천항이 부산항보다 약 3배 정도 높은 손상률을 나타내었으며 인천항의 경우 철근부식 손상과 외부요인 손상의 비율이 유사하게 나타났으며, 부산항의 경우 철근부식 손상이 외부요인 손상의 비율보다 높게 나타났다. 한편 지침에서 제시하고 있는 열화환경 평가와 비교한 결과 지침에서 제시하고 있는 열화환경 평가를 바탕으로 항만시설물을 평가할 경우 정량적 평가를 수행함에 다소 한계가 있는 것으로 확인되었으며 기존 문헌을 참고하여 조수간만의 차를 바탕으로 분석을 수행하였다. 인천 및 부산 지역에 대한 조수간만의 차를 분석한 결과 인천이 부산보다 약 5배 높은 조수간만의 차를 나타내었으며 이는 기존 열화환경 평가 항목보다 지역 및 해역에 대해 정량적으로 열화환경을 평가할 수 있는 항목이 될 수 있을 것으로 판단된다.

• Journal of Advanced Marine Engineering and Technology
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• 제40권1호
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• pp.50-54
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• 2016

무선센서네트워크는 구축과 운영측면에서 기존 네트워크방식보다 유리하나 각종 산업플랜트의 중요감시 대상설비는 대부분 건물내부 또는 지하에 위치하며 고정되어있어 일반적인 형태로는 적용이 어렵다. 이러한 특정 환경의 설비 감시를 위해서는 해당 조건에 적합한 무선센서네트워크 형태로 적용해야 한다. 따라서, 본 논문에서는 적합한 형태 확인을 위해 TinyOS시뮬레이터인 TOSSIM을 이용하여 고정설비감시 네트워크 환경과 유사한 조건에서 시뮬레이션을 수행하고 그 결과를 제시한다. 확인 대상은 LEACH, Flooding 및 Gossiping 프로토콜로 네트워크의 부하분산과 효율 면에서 계층구조인 LEACH가 좀 더 우수함을 나타낸다.

• 한국물환경학회지
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• 제36권3호
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• pp.206-219
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• 2020

As urbanization and impermeable areas have increased, stormwater and non-point pollutants entering the stream have increased. Additionally, in the case of the old town comprising a combined sewer pipe system, there is a problem of stream water pollution caused by the combined sewer overflow. To resolve this problem, many cities globally are pursuing an environmentally friendly low impact development strategy that can infiltrate, evaporate, and store rainwater. This study analyzed the expected effects and efficiency when the LID facility was installed as a measure to improve hydrologic cycle and water quality in the Oncheon stream in Busan. The EPA-SWMM, previously calibrated for hydrological and water quality parameters, was used, and standard parameters of the LID facilities supported by the EPA-SWMM were set. Benchmarking the green infrastructure plan in New York City, USA, has created various installation scenarios for the LID facilities in the Oncheon stream drainage area. The installation and maintenance cost of the LID facility for scenarios were estimated, and the effect of each LID facility was analyzed through a long-term EPA-SWMM simulation. Among the applied LID facilities, the infiltration trench showed the best effect, and the bio-retention cell and permeable pavement system followed. Conversely, in terms of cost-efficiency, the permeable pavement systems showed the best efficiency, followed by the infiltration trenches and bio-retention cells.