• Journal of the Korea Convergence Society
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• v.12 no.1
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• pp.77-87
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• 2021

Environment is an important factor in city life. Environmental elements are a subject that must be discussed in the smart city plan, but there is still a lack of information and data sharing in the urban environment, so improvements are needed. As part of the intelligent of Nanjing, this research has made in-depth investigation into the construction and service demand of environmental information, and has carried out the research on the design and construction of intelligent information platform that conforms to Nanjing intelligent city planning, improves environmental quality and provides environmental information service. The visualization of information is also studied. The result is an important module in the construction of intelligent city in Nanjing.

• Convergence Security Journal
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• v.20 no.4
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• pp.113-123
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• 2020

The fourth industrial revolution can be called the hyper-connected-based intelligent revolution triggered by advanced information technology and intelligent technology, and the basis for implementing these technologies is 'data'. This study proposes a way to strategically use data in order to lead this intelligent revolution in the defense area. First of all, implications through analysis of domestic and international trends and prior research and current status of defense data management were analyzed, and four directions for development were presented. If the government composes conditions for building, releasing, sharing, distribution, and convergence of defense data considering the environment of national defense in the future, it is expected that it will serve as a foundation and a shortcut to be a digitalized strong military through smart defense innovation in the era of the fourth industrial revolution.

• Korean Journal of Construction Engineering and Management
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• v.17 no.2
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• pp.31-38
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• 2016

In a construction project, the portion for maintenance costs for a building is considerable compared to the initial construction cost. As such, Life Cycle Cost (LCC) analysis is being increasingly utilized to assess the design value of engineering work in Korea. Additionally, the Public Procurement Service in Korea announced that it will be mandatory for all domestic construction projects to adopt BIM. Furthermore, the paradigm for architectural design has shifted from 2D to 3D, and to BIM, which includes a data management system. Within this background, however, there is currently no adequate BIM-based LCC analysis software and the requirements of cost estimation for repair and replacement cost for a building is not completely adequate in BIM tools such as Revit and Archicad. Therefore, this study suggests a process of cost estimation for repair and replacement (R&R) cost based on IFC data. First, we analyzed existing R&R criteria and defined BIM-based requirements when calculating R&R costs. These requirements were extracted from relevant IFC data. Subsequently, this was saved to a database and a BIM-based database was built for R&R cost estimation. Finally, this database was connected with external databases such as R&R Criteria DB and Cost Information DB to calculate R&R costs. This process is expected to improve upon the traditional process of cost estimation of R&R cost by applying a BIM model. The proposed process can contribute to a further standardizing of BIM-based LCC analysis thru application to initial construction costs, energy costs, and other maintenance costs.

• Journal of the Korea Institute of Building Construction
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• v.11 no.6
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• pp.567-575
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• 2011

With the development of construction information, a computerization tool for architectural process control is a necessary tool. However, the reality is that the conditions and understanding of users are not sufficient to fully utilize such a tool. In particular, it was analyzed that the reason for the negative feedback from hands-on workers regarding the current process control information system is that there is a difficulty in accessing the system for users that are not process and planning experts, due to a lack of information and technical contents at the phase of control and planning prior to the process plan. Therefore, the demands of users and a direction for the improvement of a system in terms of optimizing process control computerization were investigated, with the aim of addressing the disadvantages of the existing system and developing a professional system that is specialized in the construction industry. Therefore, it is necessary to construct an integrated WBS (IWBS) that combines WBS with CBS, and subsequently, it is judged that the most important aspect is the integrated technology of compatibility and operation of data that is linked with OBS. The process information must then deal with the changing information; in other words, the amount of construction, construction cost, and the required construction period etc., by coding data into a 4-unit index, such as a project unit (WBS Level 1), a project facility unit (WBS Level 2), a management department unit (OBS Level 1), and a control manager unit (OBS Level 2). After that, it was found that it is necessary to develop a computer system to consistently integrate process information into a management department.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.274-279
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• 2003

위성영상을 이용한 새만금 지역의 DEM생성을 위하여 waterline method를 사용하였으며, 총 13개의 Landsat thematic mapper (TM) 위성영상 자료를 이용하여 1991년과 2000년 기준의 DEM을 생성하였다. 현장 수준측량 자료를 이용하여 생성된 DEM의 정밀도 검증을 실시하였으며, 2002년 3월에 100m 간격으로 측정된 실측자료를 이용하였다. 해안선 추출은 density slicing 방법을 사용하였으며, 사용된 밴드는 육지의 경계를 구분하는데 많이 쓰이는 밴드 4번, 5번 및 6번 밴드를 선택적으로 사용하였다. 절대고도 값의 대입을 위하여 waterline 추출에 사용된 위성영상의 획득 시간에 대해 해양조사원의 10분 간격 실측 조위를 사용하였으며, 추출된 13개 waterline의 최저 조위는 58cm 이고 최고 조위는 537cm 이다. 추출된 해안선에 수준측량 자료를 이용하여 검증한 결과 RMS 오차 9.91 cm, 표준편차 9.78 cm의 정밀도를 갖는 2000년도 DEM을 생성하였다. 새만금 지역의 waterline 추출 과정에서 만경강과 동진강 하구 지역은 강에 의한 에너지의 유입, 유출로 인한 변화가 심하여 두 지역을 DEM 생성에서 제외하였다. 이렇게 생성된 과거(19991년도) DEM과 현재(2000년도) DEM을 이용한 지형변화 비교는 두DEM 차이로 9년간의 새만금 조간대 변화를 계산하였다. 군산공항지역의 지형변화는 거의 없는 것으로 나타났으며, 새만금 방조제가 건설된 이후 개화도 주변지역의 변화가 가장 두드러진 지형적 변화로서 방조제 입ㆍ출구 지역은 빠른 유속에 의해서 과거에 비해 침식이 우세하며, 방조제에서 육지로 갈수록 퇴적이 우세한 것으로 관측되었다.보체계의 구축사업의 시각이 행정정보화, 생활정보화, 산업정보화 등 다양한 분야와 결합하여 보다 큰 시너지 효과와 사용자 중심의 서비스 개선을 창출할 수 있는 기반을 제공할 것을 기대해 본다.. 이상의 결과를 종합해볼 때, ${\beta}$-glucan은 고용량일 때 직접적으로 또는 $IFN-{\gamma}$ 존재시에는 저용량에서도 복강 큰 포식세로를 활성화시킬 뿐 아니라, 탐식효율도 높임으로써 면역기능을 증진 시키는 것으로 나타났고, 그 효과는 crude ${\beta}$-glucan의 추출조건에 따라 달라지는 것을 알 수 있었다.eveloped. Design concepts and control methods of a new crane will be introduced in this paper.and momentum balance was applied to the fluid field of bundle. while the movement of′ individual material was taken into account. The constitutive model relating the surface force and the deformation of bundle was introduced by considering a representative prodedure that stands for the bundle movement. Then a fundamental equations system could be simplified considering a steady state of the process. On the basis of the simplified model,

• Korean Journal of Construction Engineering and Management
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• v.7 no.3 s.31
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• pp.56-64
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• 2006

The current disaster management manual is being utilized as a book or document-based type. It causes a low applicability and interoperability in practical business because each information has a different document format and it is difficult to recycle those information as common disaster information. The information reading by text type without electronic data and visual object also has a limitations in guaranteeing a quickness of disaster management business. Accordingly, the electronic document management system with visual information is necessary and the system needs to tie framed by XML schema because the electronic document standard will be changed from DTD to XML schema. This study attempts to develop a procedural methodology of an electronic document management system based on XML for disaster management. The applicability of the proposed results is verified by the simulated scenario.

• Journal of Information Technology and Architecture
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• v.11 no.3
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• pp.333-345
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• 2014

Knowledge management system (KMS) is an information system that helps an organization manage its knowledge assets effectively as well as maximize their values within the organization. In engineering fields, because the expertise and know-how of experts are so critical, KMS can play an important role to store and share the experts' knowledge within the organization. This paper adopts an object-oriented approach to analyze and design an engineering knowledge management system required to manage and share engineering knowledge effectively. A field study is conducted against construction and automobile engineers to draw critical success factors to successfully implement and adopt an engineering KMS and based on this study, the engineering KMS has been analyzed and designed. Also, this paper proposed a flexible system architecture that can be applied to various engineering fields.

• Journal of the Korean GEO-environmental Society
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• v.15 no.4
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• pp.53-60
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• 2014

There have been vast amounts of the site investigation data from the domestic construction sites every year and various national research institutes are constructing the database for the site investigation data. According to the Ministry of Land, Transport and Maritime Affairs, the database for the site investigation has been constructed for covering 154,000 individual boreholes since the computerization project for the geotechnical information started at 2000. It is considered to be high time to evaluate the reliability of the stored DB so that the current DB should be utilized to the various fields related to the planning and site investigation of the construction activities. Therefore, the precision of the stored site investigation data was evaluated via normal distribution for more active sharing and utilization. As a preliminary evaluation of the precision, the locations of the encountered strata from two different sites were analyzed. After the precision of the stored data is determined, the level of reliability of the each category of the stored geotechnical information would be determined and the users would be able to decide which information could be utilized.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.879-882
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• 2007

수문관측자료 운영 개선방안에 대한 연구(2006, 김휘린, 조효섭)에서 건설교통부 한강홍수통제소에서 수행하고 있는 수문관측자료를 대상으로 하여 관측, 기록, 전송, 품질관리, DB구축 및 정보화의 5단계로 임의 분류하고 각 단계별 현황을 파악하여 문제점을 검토하고 개선방안을 제안하였다. 이는 적극적으로 수용되어 수문관측자료 운영에 대해 개선을 시도하였으며 본 논문에서는 이를 간략히 소개하고자한다. 첫째, 관측소 점검 대장이 조사과와 전기통신과로 이분화되어 있고 각 관측소별로 점검대장이 비치되어 있으나 이를 수기로 작성하고 있으며 자료의 업데이트 및 과거점검대장의 DB 구축과 비전산화를 지적한 바 있다. 이에 '물관련시스템 DB연계 사업'을 통해 수기로 작성된 관측시설 점검대장을 전부 DB로 구축하였고 이를 총괄하여 관리 및 점검사항을 업데이트할 수 있는 관측시설 점검대장 관리 및 입력 프로그램을 구축하였고 현재 한강홍수통제소에서 시험 운영 중에 있다. 향후 보완이 끝난 후에는 낙동강, 금강, 영산강 홍수통제소에도 확대 설치 및 운영을 실시할 예정이다. 둘째, 수문자료의 품질관리에 있어서 전산시스템에 의한 완전 자동화는 실현하기가 어려울 뿐 아니라 바람직하지 못한 결과를 가져올 수 있으므로 담당자의 수동 검토 및 처리과정은 필수적이라고 논한 바 있다. 그 후 수문자료품질관리T/F팀(조사과, 전기통신과, 하천정보센터)이 구성되었고, 홍수기 오 결측자료 발생 확인, 긴급대응 촉구, 이상치 발생원인 추정 및 대책 마련 등 고품질 수문자료를 생성하기 위해 노력하였다. T/F팀 활동사항은 타홍수통제소에서도 벤치마킹이 되고 있다. 보다 정확한 댐운영자료 공유방안을 위한 관련기관과의 협력회의가 개최되어 품질관리된 자료의 정보 공유시기, 공유방식, 자료형태 등이 결정되었다. 이는 유관기관간 품질관리된 댐운영자료의 효율적인 정보 공유체계 확립을 위한 체계를 마련하는 계기라고 사료된다. 또한, 유량측정사업 결과를 익년에 반영하는 기존 방식을 개선하기 위해 유량자료관리및분석시스템(프론티어사업에서 수행, 한국건설기술연구원 개발)을 통제소내에 설치 운영을 추진하고 있다.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.1
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• pp.158-166
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• 2018

The application of the BIM for architectural and structural work accompanied many trials-and-errors on project based on BIM by this time Ten years have passed since BIM issued, but it is not activated. This study suggests ways to activate BIM for architectural and structural work. The reason for choosing the structure construction is as follows. Construction cost is a high proportion of structural construction cost. On the other hand, the number of related materials is small, and the first in the 3D modeling process is structure modeling. And build BIM-based Structural Database by quantity take-off. This study shows the applicability of BIM through practical cases. This study is expected to provide suggestion for the successful implementation of BIM-based projects.