검색결과

검색조건
좁혀보기
검색필터
결과 내 재검색

간행물

    분야

      발행연도

      -

        검색결과 14

        1.
        2020.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        PURPOSES : For large-scale construction, such as a concrete pavement, design and construction are not entirely consistent. If the inconsistency between design and construction is very large, construction quality is significantly degraded, affecting performance life span and driving comfort. The quality of pavement construction is managed according to standards. However, it is difficult to improve construction quality as the standard measures construction quality after construction is completed. Therefore, this study developed a system to measure the construction quality of concrete pavement in real-time and presented the corresponding standards. METHODS : A basic module for simultaneously measuring the width, thickness, and roughness of the concrete pavement was designed. Based on the measurement results of the distance measurement sensor, a calibration method is presented that can remove noise. The system process was developed to measure construction quality based on location and distance data, measured in real-time using GPSs and sensors. The field application experiment was conducted and the results were analyzed. RESULTS : The measurement module is properly designed to be used in concrete pavement construction sites. Noise was removed from the distance measurement sensor results according to the presented calibration method, leaving only the wave of pavement surface irregularities. As a result of applying the system process in the field application, a reasonable level of PRI was observed. CONCLUSIONS : In the past, the width, thickness, and roughness were measured after construction was completed and, if the standard was not met, construction quality control was performed via reconstruction or repair. Through this study, it is expected that the width, thickness, and roughness of the concrete pavement can be measured in real-time and, if the standard is not met, construction quality can be immediately controlled during construction to maintain high quality.
        4,000원
        2.
        2020.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The area around a certain airbase was affected by the noise of military helicopters, which seriously reduced the quality of the living environment in the surrounding area. In this paper, an automatic noise measurement system is set at 3 measurement points around the flight path of the 00 flight field. The fixed noise monitoring system is set up to measure the aircraft noise every day。 and selects the measurement site to facilitate the impact of noise caused by helicopter flight on the surrounding life. There is also a manual noise level measurement of the helicopter's maximum noise level for 7 days at 3 locations. Calculate the WECPNL value of 3 measuring points. Analyze the correlation between the aircraft noise evaluation unit WECPNL-Lden.
        4,000원
        3.
        2012.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        PURPOSES : Efficiency Improvement of a public road construction project management work using the development of a real-time remote site monitoring system METHODS : In this study, we developed the remote site monitoring system using a web camera for road construction projects in the RCMA(Regional Construction Management Administration). We can be monitored a construction progress and a weak point of the situation in real time using this. To achieve this, we tested about 10 road construction projects ordered by RCMA. Then, we verified a applicability for the site monitoring system in future. RESULTS : Take advantage of the remote site monitoring system consists of the Construction CALS System, one of the business systems used in the part of the MLTM(Ministry of Land, Transport and Maritime Affairs) institution-agencies. Was configured to be served through the "Construction CALS System" of "Construction Management System(Contractors)" and the "Construction CALS Portal System". Through this, Benefit analysis through a pilot application of the 10 road construction sites and developing considerations and "Guide for visual information processing equipment installation-operating in construction sites"are presented. CONCLUSIONS : Through the establishment of remote site monitoring system can improve the efficiency of construction management services. In addition, Various disasters and calamities, accidents and illegal construction will be prevented in advance is expected. This is expected to further improve the quality of the facilities.
        4,000원
        4.
        2011.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Smart-Phones are utilized in disaster management field because it can deliver disaster information to large population simultaneously and quickly, and provide accurate information through situation-based service using the LBS(Location Based Service). To study on the utilization of smart phone for disaster information collection and dissemination method, this study suggest a framework which connects smart phone by loading application for reporting disaster. The disaster monitoring and situation dissemination system framework using smart phone is composed of 4 parts. First, smart phone application enters image, video, voice and text information and location of the disaster. Second, the disaster report reception and situation dissemination server receives the information, save in the DB, and send through smart phone SMS. Third, store into disaster information database. Fourth, display the disaster report and management information on 2D GIS, support the decision making process in deciding whether to manage as disaster, and disaster management web service which disseminates situation.
        4,300원
        5.
        2009.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This Study constructs a dashboard system to synthetically and systematically monitor national R&D information based on data warehouse Managing the national R&D statistics and trend is important since it provides data for policies and decision making for n
        4,500원
        8.
        2014.04 서비스 종료(열람 제한)
        Needs for a new technologies of infrastructure systems arose, following the development of next generation EMU(Electric Multiple Unit) train with maximum speed over 400km/h. For high-speed operation tests of the new EMU, a high-speed railway infrastructure test-bed was constructed in a 28km long section of the Honam High-speed Railway. Diverse sensors and monitoring system was installed for continuous monitoring of the railway. Due to such effort, further demands and needs of the integrated monitoring system was derived in a more comprehensive and long-term perspective.
        9.
        2012.02 서비스 종료(열람 제한)
        지구환경의 변화로 홍수빈도 및 강우강도가 증가하고 있다. 이에 따라 도시유역 내 홍수범람으로 인한 인명 및 재산 피해가 빈번히 발생하고 있다. 발생되는 피해에 대하여 과학적이고 기술적인 대응 방안이 필요하며 이를 위한 기술의 개발과 홍수예경보시스템의 연계에 관한 적정 방안을 필요로 하고 있다. 본 연구에서는 효율적인 통합중소하천의 예경보 시범유역을 선정하고 이를 위하여 부산시 소재 내 온천천 유역을 시범유역으로 선정하여 홍수예경보를 위한 10분 간격의 실시간 모니터링을 구축하였다. 이는 현장에 설치된 강우계, 수위계, 유량계를 설치하여 이를 원격 시스템으로 데이터를 전송하고 관리할 수 있는 웹사이트를 구축하였다(http://pnuhydro.pusan.ac.kr). 이를 통하여 구축된 DB를 활용하여 도시 유역 내 단기 수문예측모형을 개발하였다. 수문예측모형은 온천천 유역 내 설치되어 있는 실시간 유역 모니터링 시스템의 수집된 자료 중 홍수시 강우사상별로 수문예측모형의 입력자료로 사용하였다. 역전파알고리즘 기반의 인공신경망을 이용하여 2006-2012년의 기간 중 10분 간격의 수위 및 강우 자료를 이용하여 홍수기 시 강우사상별로 자료를 정리 한 후 4가지 강우사상에 대하여 training과 testing 기간으로 나누어 10분부터 60분까지의 수위 예측을 실시하였다. 그 결과 10분 간격의 수위예측에서 10분 간격으로 최대 60분까지 예측한 경우 예측 기간이 길어질수록 예측 정도가 단기 예측에 비하여 RMSE와 CC(상관계수) 값 중 RMSE 커지긴 하지만 상관분석의 결과 및 RMSE 모형 분석 결과는 대체적으로 60분까지 예측 성능이 우수한 편이었다. 이는 실시간 모니터링 시스템에 의하여 DB화한 수문관측자료를 이용하여 역전파알고리즘 기반의 수위예측모형은 도시 유역 내 돌발홍수 및 범람에 대비할 수 있는 대안책으로 추후 효율적인 모니터링 시스템의 운영과 관리에 의한 DB의 축적과 이를 통한 다양한 강우사상에 대한 수문예측모형의 적용으로 그 적용성 평가가 필요할 것으로 사료된다.
        10.
        2011.04 KCI 등재 서비스 종료(열람 제한)
        효과적인 수질관리를 위해서는 수질정보의 기대수준에 맞는 신뢰성 있는 수질자료가 확보되어야 한다. 이런 점에서 볼 때 수질모니터링은 조사지점, 수질항목, 측정주기 등이 성패의 중요한 요인이 되며, 이중에서 특히 조사지점은 가장 중요한 사항으로 판단된다. 그러나 지금까지 수질조사를 위한 관측지점은 대부분 정성적 판단에 따라 정해지고 있었기 때문에 수질 대표성이 문제가 되기도 하였다. 본 논문에서는 이와같은 수질측정망 구축 시 문제점을 과학적인 통계기법을 적