• 국제학술발표논문집
• /
• The 2th International Conference on Construction Engineering and Project Management
• /
• pp.50-60
• /
• 2007

The endeavor of this paper focuses on designing a monitoring system to provide a cost-effective solution on quality assurance for construction projects. The construction site monitoring system integrates a long-range wireless network, network cameras, and a web-based collaborative platform. The users of the system could obtain the most updated status of construction sites, such as behaviors of workers, project progress, and site events anywhere with Internet connectivity. It was carefully configured in order to maintain the reliability under the reactive conditions of the construction sites. This paper reports the architecture of the monitoring system and reviews the related technologies. The system has been implemented and tested on a construction site and promising results were obtained.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2010년도 춘계학술대회 논문집
• /
• pp.2202-2208
• /
• 2010

The railway in Korea has been one of important transportation means as the introduction of high-speed train and progress in subway systems. Also, as increases in the speed of train, the guarantee of safety becomes more important, especially, in the fields of railway vehicles and/or facilities. The structural health evaluation for the prevention and diagnosis of the accidents could be conducted using several types of nondestructive evaluation techniques such as ultrasonic developed using infrared thermography or optic fiber sensors. In this paper, the recent progress in structural health evaluation for railway systems has been introduced, and the case studies have been discussed.

• Smart Structures and Systems
• /
• 제6권3호
• /
• pp.263-275
• /
• 2010

In the last decade, wireless sensor networks have emerged as a promising technology that could accelerate progress in the field of structural monitoring. The main advantages of wireless sensor networks compared to conventional monitoring technologies are fast deployment, small interference with the surroundings, self-organization, flexibility and scalability. These features could enable mass application of monitoring systems, even on smaller structures. However, since wireless sensor network nodes are battery powered and data communication is the most energy consuming task, transferring all the acquired raw data through the network would dramatically limit system lifetime. Hence, data reduction has to be achieved at the node level in order to meet the system lifetime requirements of real life applications. The objective of this paper is to discuss some general aspects of data processing and management in monitoring systems based on wireless sensor networks, to present a prototype monitoring system for civil engineering structures, and to illustrate long-term field test results.

• 한국도로학회논문집
• /
• 제14권6호
• /
• pp.57-65
• /
• 2012

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.

• 대한가정학회지
• /
• 제49권6호
• /
• pp.67-83
• /
• 2011

The purposes of this study were to a develop a preventive tailored early intervention program and to investigate the effects of the program on the quality of parenting for low income families. The subjects were eighty five infants, aged 13 to 32 months, and their mothers. Of the 85 mother-infant dyads, 42 dyads were randomly assigned to the experimental group and 43 dyads to the control group. To prevent the risks of the adverse development of infants from low income families a tailored intervention program was created based upon the transactional model. This emphasized the quality of the home environment and of the daily mother-infant interaction. The risk factors were assessed and progress monitoring was undertaken for the preventive tailored intervention treatment. In order to assess the effects of the program, HOME, the NCAST Teaching Scale and the Parenting Stress Index/Short From were used. The collected data were analyzed with descriptive statistics, ANCOVA, and the McNemar test. The experimental group showed a significant increase in performance and higher scores than the control group on the scores from HOME, and the NCAST Teaching Scale and significant decrease and lower scores in the Parenting Stress Index(SF).

• East Asian mathematical journal
• /
• 제28권4호
• /
• pp.487-504
• /
• 2012

This study was to analyze the research trend related to mathematics education evaluation in the analysis of the articles on , . The study explores the future direction of mathematics education assessment research by investigating whether such evaluation was suitable for the expectation about the assessment required in the current mathematics curriculum. This study was to classify the evaluation-related researches based on Korea educational curriculum revision from 1991-2010 to examine the research trend on the mathematics education evaluation in each season in Korea, analyze the articles by 'monitoring of student's progress', 'judgement on instruction', 'giving the value on mathematics achievement of students', 'value judgement of the program' that were the purpose of evaluation presented in 1995 NCTM(National Council of Teachers of Mathematics). As a result, looking at the research trend classified by the time of the educational curriculum revision, the 7th educational curriculum had the most number of the papers announced from 1997-2006. Despite 2007 educational curriculum revision was the short period from announced 2007-2008 before the next educational curriculum was placed, 11 papers(34.4%) were published. According to the category by the purpose of the assessment prescribed in NCTM, it showed that researches of 'monitoring of student's progress(46.9%)' were the most, those of 'value judgement of the program' and 'giving the value on mathematics achievement of students had a similar percentage.

• 한국건설관리학회논문집
• /
• 제22권1호
• /
• pp.106-115
• /
• 2021

이미지를 이용해 공종을 분류하는 작업은 건설 관리와 공정 관리와 같은 더욱 복잡한 어플리케이션에서 중요한 역할을 수행할 수 있다. 하지만, 공사 현장에서 수집한 이미지들은 항상 깨끗하지 않을 수 있고, 이와 같이 문제가 있는 이미지들은 이미지 분류기의 성능에 부정적인 타격을 입힐 수 있다. 이러한 가능성은 공종을 판별하는 시스템을 보조할 수 있는 데이터나 방법의 필요성을 부각한다. 본 연구에서 우리는 공종의 선·후행 관계를 이용해 이미지 분류기를 보조하여 공종을 판별하는 시스템의 성능을 높이는 방법을 제시한다. 그리고 제시하는 방법이 공종 판별의 성능을 향상시킬 수 있다는 것을 보인다. 특히, 이미지 판별기의 성능이 좋지 않을때 더욱 드라마틱한 성능의 향상을 경험할 수 있다는 것을 알 수 있었다.

• 한국산학기술학회논문지
• /
• 제21권2호
• /
• pp.58-65
• /
• 2020

3D CAD 시스템으로 설계된 해양플랜트 배관재 모델들은 2D 배관 제작도와 설치도의 형태로 생산 공정에 제공되고, 기본 엔지니어링 정보와 함께 통합 공정관리시스템에서 원자재의 구매, 조달, 제작, 설치 및 검사가 체계적으로 관리되어 진행된다. 기존의 통합 공정관리시스템은 자원의 흐름 및 진행 상황을 체계적으로 관리하여 공정 시수 절감에 많은 기여를 하고 있지만, 3D 설계 형상 모델 정보를 포함하고 있지 않기 때문에 배관 설치 작업 전에 복잡한 배관 구조를 파악하거나, 잦은 설계 변경으로 인해 연관된 도면을 찾을 때 상호간 신속한 정보 교류가 어려운 단점을 가지고 있었다. 이러한 문제점을 해결하기 위해 3D 모델을 기반으로 하는 해양플랜트 배관 공정 모니터링 시스템을 개발하였다. 본 시스템은 3D 모델 기반 배관 모니터링 시스템은 Visual Studio 2017 C#과 UNITY3D를 기반으로 배관 공정 작업 정보가 3D CAD 모델과 실시간 연동될 수 있도록 구성하였다. 그리고 블록, 크기, 재료에 따른 배관 설치 공정 진행 흐름 뿐만 아니라, 청소, 수압검사, 공압검사 등 기능 검사 항목별 진행 흐름을 3D 모델상에서 실시간으로 확인할 수 있도록 하였다. 작업자는 개발된 시스템을 통해 생산 현장에서 실시간으로 배관 공정 진행 흐름을 포함한 3D CAD 모델을 쉽게 파악함으로써 작업 효율성 향상에 많은 기여를 할 것으로 기대된다.

• 환경영향평가
• /
• 제9권4호
• /
• pp.315-322
• /
• 2000

Environmental Impact Assessment(EIA) was first formally established in the Korea in 1981. Subsequently there has been a rapid growth in EIA activity, and over one hundred fifty environmental impact statements are now published in Korea each year. Although EIA now has almost 20 years of history in the Korea, elsewhere the development of roles and practice is more recent. Development is moving apace in many countries, including the Japan and the EU Member States. Such progress has not been without its problems, and a number of the current issues in EIA-scope of the assessment, the relative roles, the quality of assessment and monitoring and auditing after decision, and so on- are highlighted. So the purpose of this article is to reform the EIA roles and process, in extending the scope of activity, and assessing effectiveness. This article suggested improving the effectiveness of project assessment, widening the scope: stretegic environmental assessment, and extending EIA to project design process, environmental monitoring and feedback system.

• 한국컴퓨터정보학회논문지
• /
• 제3권2호
• /
• pp.161-168
• /
• 1998

본 논문은 상호참여형 CBM(Computer Based Multimedia) 기반의 원격지 방범시스템 기술에 관한 연구이고, 이는 방범진행중에 각 실의 모니터링을 통한 추가기능이 지원된다. 본 시스템은 ISDN 망을 이용한 센서에 의한 상황을 체킹하고 방범상황을 송신하게 된다. 본 원격지 방범시스템은 El/Tl 의 초고속정보통신망을 이용한 빠르고 안전한 시스템이다. 또한, 본 시스템은 ISDN 공중망을 이용한 방범시스템을 지원하고 있으며, 또한 모니터링 시스템은 방범시스템의 중앙 통제자에게 각 지역의 상황을 전송하여 모니터링하게 한다.