• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.597-601
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• 2006

There are considerable amount of man power and time spent for analysis and selection of various materials due to the inadequate application system and rapid searching process of material related information in each stage of building production process. Also, due to the insufficiency in recycling system of important information created for each process, they are hoarded at each task stage and project completion. As a result, because of the repetition of the similar/identical tasks on each process, it is the major reason for impeding the efficient employment of manpower of the company and decreasing competition of the company. Moreover, in selecting finish material in the project field, there are many difficulties due to the lack of technical information such as product characteristics and field applications. The construction quality also affects the profit and loss of the product which calls for a need to develop continued information management system that the finish material related examples could be shared in real time. The objective of this study is to propose a building finish material information which the real time research and application is possible to raise the productivity. TO do this, the current material information task status analysis and questionnaire research should be conducted to understand the demand of system development and reflect the result onto the system for easy access and application. Therefore, the building finish material information system for enhancement of productivity of construction task proposed in this study is expected to be utilized in enhancement of construction quality, maximization of company profit, and strengthening of company competition.

• Journal of Wetlands Research
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• v.20 no.2
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• pp.124-130
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• 2018

This study was conducted to identify the characteristics of bird population dynamics using unmanned monitoring system in rice paddy. We compared the similarity of population dynamics of birds between unmanned monitoring system and field survey, and evaluated the spatial and temporal patterns of population dynamics of birds using the unmanned monitoring system. The monitoring using the system was conducted from January 1, 2014 to December 31, 2016 in Cheolwon, Dangjin, Buan, and Heanam. The images from the system were obtained at 10-min intervals from 6:00 to 20:00. The field survey was conducted once a month in Dangjin from January to December 2016. Total 91,980 images were obtained from the unmanned monitoring system. We extracted the number of individuals for herons, shorebirds, and waterfowl from the images. The population dynamics of waterbirds using the unmanned monitoring system were similar to that in field survey. Especially, population dynamics of herons was more similar than other waterbirds. It was identified that the population dynamics of herons using the unmanned monitoring system was different among the Cheolwon, Dangjin, Buan, and Heanam. Furthermore, the unmanned monitoring system was available on various time scale such as month, day, and minute. It is expected that long-term data storage using the unmanned monitoring system can be used to identify in detail and forecast the population dynamics of birds in rice paddy.

• Journal of the Korea Society of Computer and Information
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• v.25 no.12
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• pp.173-186
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• 2020

In this paper, we design and implement a service system for mobile devices to utilize the integrated underground geospatial information map in underground exploration fields. The field utilization service system for mobile devices is designed to visualize tiled maps, 3D terrain information, underground structures, underground facilities, and ground information provided by the Integrated Underground Geospatial Information Map Management System according to current position. And It is designed to reflect the results obtained from field exploration in real time. Also, the proposed system is implemented to transfer and visualize the integrated underground geospatial information map in the form of a glTF format due to constraints on wireless networks and device characteristics of mobile devices. Implemented mobile service systems can prevent accidents in underground exploration field from occurring by providing users with accurate and integrated underground geospatial data by visualizing maps and geospatial objects in three dimensions at underground exploration fields. In addition, updated underground geospatial data is transmitted in real time to the Integrated Underground Geospatial Information Map Management Systems, which can maintain up to date and accuracy.

• Korean Journal of Construction Engineering and Management
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• v.13 no.4
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• pp.100-109
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• 2012

Large road construction projects are typically partitioned into sections that are then contracted individually to contractors. Each section requires using similar heavy equipment including excavators, dump trucks and pavers, which constitute the highest cost. Normally the equipment is not shared between them, as each contractor wishes to have their equipment readily available. However, such practices result in very low utilization of these equipment. The goal of this research is to develop a programmatic resource sharing system in which contractors can share equipment depending on the changing needs of a multi-sectioned road project. This paper introduces the results of a survey performed to investigate how contractors currently manage the supply and demand of equipment and the equipment that are practical for sharing across a project. More importantly, the paper describes a set of metrics (DPR, nDPR, SDI) needed to quantify the amount of supply/demand variance occurring in each section. The metrics were used on an actual road construction project, and the results show that each section suffers from an imbalance between its monthly planned and actual utilization of equipment. The results also indicate that the sharing of the equipment can lead to potentially large savings as equipment requirements can be met within a project as to short leasing from outside vendors.

• 한국정보교육학회:학술대회논문집
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• 2009.08a
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• pp.127-132
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• 2009

최근 웹상에는 교육적으로 활용 가능한 자료들이 산재해 있다. 이에 따라 학교 현장에서도 웹 기반의 멀티미디어 자료에 대한 활용이 크게 증가하고 있다. 그러나 웹 페이지 안에 포함되어 있는 여러 멀티미디어 자료들을 실시간으로 활용할 수 있도록 관리 및 서비스하는 파일 서버 시스템은 찾아보기 어려운 형편이다. 이에 본 연구에서는 효율적인 자료 관리 및 사용을 위해 개별적으로 서비스 되고 있는 다양한 멀티미디어 교육 자료들을 수집, 관리하고 그 자료를 멀티 프로토콜 기반으로 관리 및 서비스할 수 있는 파일 서버 시스템을 설계하고 구현하고자 한다. 본 연구 결과는 멀티미디어 자료의 공유 및 활용을 높이는데 사용될 수 있다.

• Ecology and Resilient Infrastructure
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• v.6 no.4
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• pp.277-286
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• 2019

The construction industry is known to be one of the representative industries that generate fine dust. Therefore, reducing the amount of fine dust generated in construction sites is very important for the overall fine dust management. Based on this, this study proposed the fine dust measurement and removal technology combined with advanced technologies such as autonomous mobile vehicle IoT and DFS. The qualitative, quantitative and risk elimination effects that can be expected when applying the proposed technique are analyzed. The proposed technique will be validated through system development and field application and evaluated specific economics through cost analysis.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.43 no.6
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• pp.831-839
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• 2023

The purpose of this study is to quickly collect and analyze information generated in real-time at disaster sites to propose an integrated plan for an on-site support system that can support accurate disaster site situation identification and decision-making, and to review field applicability through prototype simulation. Accordingly, information collection, sharing, and convergence technologies that can be used at disaster sites were reviewed, and a plan for integrating a smart disaster site support system that can create an efficient flow of information resources and information necessary for the entire stage of disaster management was presented. In order to examine the possibility of operating the system with a prototype manufactured based on the integration plan, simulations were conducted based on the storm and flood disaster scenario, and it was confirmed that various functions in the system were implemented normally and displayed on the GIS situation board. Through this study, it is expected that efficient and active disaster response will be possible in a rapidly changing disaster environment.

• Korean Journal of Construction Engineering and Management
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• v.15 no.5
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• pp.115-126
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• 2014

Although various IT-based services including PMIS are used at construction field, there have been limits on communications, such as fast reaction, information loss, and information security in the real world. Therefore, this paper proposes to adapt a social network service (SNS) that has already been used for information management and sharing information at the company level in other industries in order to support construction information management and communication in a fast and accurate manner. Following the requirement analysis through literature review and site interviews, the paper presents an SNS-based construction information communication and sharing system named PMIS+. PMIS+ was tested and validated for its feasibility at construction sites and it was proved that the proposed system and information management framework using the system could be helpful for effective information management at construction fields.

• The Journal of Korean Association of Computer Education
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• v.6 no.1
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• pp.79-86
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• 2003

The researchers developed On-line Lesson Planner System so that teachers can make a lesson plan using ICT(Information & Communication Technology) on line. Developed On-line Lesson Planner System can make ICT using lesson plans store in the database, manage them systematically and help maximize share, use and storage of the lesson plans. It can contribute to the school informatization. It is important to suggest solution through analyzing the educational effects and problems appeared during applying to this developed system in real fields. Thus, this study suggests first, procedure of designing the lesson plan using ICT for the development of this system, second. the summary of designing and embodying methods, and third, the improvement and analysis of the effects and problems revealed in elementary school fields. This study provided educational grounds of the solution to the problems and consideration of this On-line Lesson Planner system.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.1602-1606
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• 2009

우리나라는 봄가을에는 산불, 여름에는 태풍 및 홍수, 그리고 겨울에는 폭설 등 항상 자연재해가 많이 발생하고 있다. 2002년 태풍 '루사', 2003년 태풍 '매미' 등으로 인하여 해마다 크고 작은 자연재해가 많이 발생하고 있으며, 많은 재산 피해와 인명피해를 가져 오고 있다. 이에 대해 태풍이나 집중호우 등에 대비하기 위한 방지 대책 및 복구 대책에 대해서는 많이 연구되어지고 있으나, 피해 후 피해조사에 대한 연구는 미흡한 실정이다. 따라서, 본 연구에서는 사진 측량을 이용하여 홍수 피해조사를 위한 지상영상기반 현장조사 시스템을 개발하였다. 지상영상기반 현장조사 시스템은 2개의 스테레오 카메라를 이용하여 피해지역을 촬영하고, 사진측량 기술을 이용하여 피해규모를 파악한다. 모의 적용 결과 줄자로 실측한 값과의 오차가 1m 이내로 발생하였으며, 휴대성이 간편하여 홍수 피해조사 등에 활용될 것으로 판단된다.