• East Asian mathematical journal
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• 제26권2호
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• pp.151-164
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• 2010

This study is to provide improved teaching methods on classical geometric construction education by a straightedge and compass in school mathematics. In this paper, justifications of construction methods of Korean textbooks, for perpendicular bisector of an segment and angle bisector are discussed, which can be directly applicable to teaching geometric construction meaningfully. Based on these considerations, several implications for desirable teaching methods concerning geometric construction were suggested.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.1089-1093
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• 2005

Proving the effect of lean construction has yet to be done for its staying poor basic building though there has been efforts and wants to introduce the theory and concept of lean construction in practical site. Therefore, we need to specify the methods of productivity improvement and construction process through various adaptations in the site. Also, to apply such improvement methods systematically, we need active participation of owners, contractors and supply chain members in relation to construction industry and are also require appropriate methods to adapt. At first, this study thinks over the techniques of lean construction that has been verified through studies carried before. For second, it selects the technique of lean construction with the practicality in the construction site. For third, it is aimed to make a manual of lean process management by the use of TACT and V.S.M. For fifth, it will show the method of management for repeated activity and develop a guide-line and procedure that applies the concept of work sequence and resource equalization to each phase of process management. At last, it will show methods of reflecting V.S.M. to improve and grasp the waste factor from the step of managing an activity process and develop the form to analyze the waste in construction site by mapping the value flow.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1993년도 지하공간 건설기술에 관한 서울 심포지움 논문집
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• pp.119-132
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• 1993

Modern construction of tunneis and large caverns in hard rock involves high technology design and construction methods. The use of sofisticated construction equipment is also an important part of a succesful completion. Since tunnels and caverns in hard rock often is situated in urban or sub-urban areas, the construction works have to be carried out under strict control as far as vibrations and other impacts on the environment is concerned. This paper will mainty discuss modern methods and equipment for the construction of large caverns.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.332-337
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• 2013

Various project delivery methods have been utilized by owners over the years to maximize project performance. The design-build delivery method is being increasingly used due to the advantages it can offer to an engineering construction industry. Numerous studies have advocated the use of design/build over the traditional design/bid/build delivery approach. This study represents comprehensive analysis of 40 projects from the construction industry and shows that design/build method may not provide all the benefits to project performance. This study found timesaving was a definitive advantage of design/build project delivery, but the positive effects of cost changes was not convincing. Based on the results of the study, the project management expertise and experience of the contractor may have a greater impact on project performance outcomes than focusing on project delivery strategy only.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.63-64
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• 2020

The purpose of this study is to find out how construction sites workers experience adaptation processes in relation to the prevention of safety accidents in the workplace through the method of grounded theory. In order to understand the experience of preventing safety accidents of workers at construction sites, a grounded theory analysis method was chosen. In order to achieve the purpose of this study, the first questionnaire was sent to 17 people working in the construction site by e-mail, and the participants of the study were met one by one for in-depth interviews. As a result of this study, the paradigm model of the experience of preventing safety accidents of workers at construction sites was classified into causal conditions, contextual conditions, central phenomena, intervening conditions, action/interactions, and outcomes. The conclusions of this study are as follows. First, forming a safety culture that can improve the safety awareness of construction sites is a priority. Second, it is necessary to improve self-management capabilities so that construction workers can accurately diagnose their current state such as their own body, emotion, and cognition and provide appropriate safety education. Third, providing safety education for construction workers with negative thoughts or distorted beliefs about safety accidents needs to include psychological treatment and counseling, such as methods of emotional purification, methods of relieving and managing stress, and methods of removing trauma.

• 한국건축시공학회지
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• 제15권4호
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• pp.405-412
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• 2015

공공공사의 발주는 발주방식의 선정이 발주부서 또는 발주업무 담당자의 업무적 경험 위주로 선정되고 있어, 해당 공사의 유형이나 특성 분석이 고려된 객관적인 선정 프로세스를 거치지 못하고 있다. 따라서 본 연구는 프로젝트 발주방식 선정 모델의 개발을 위한 초기 연구로써 공공공사의 발주방식 선정에 영향을 끼치는 주요 요인들을 분석하여 제시하고자 한다. 기존의 발주방식 관련 문헌조사를 통해 1차 요인을 제시하고, 요인분석을 통해 최종 영향 요인을 제시한다. 그 결과 발주자의 특성, 건설시장 환경, 조직, 프로젝트 특성, 비용, 책임요소의 6가지 대분류로 나뉘었으며, 하위요인으로 14가지가 선정되었다. 본 연구에서 제시된 요인들은 향후 공공공사 발주방식 선정을 위한 의사결정 지원 모델개발의 기초자료로 활용될 것이다.

• East Asian mathematical journal
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• 제26권2호
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• pp.267-280
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• 2010

In this paper we study construction methods of $n^{th}$ line in triangle. Russian Mathematician Zetel suggested some construction methods of $n^{th}$ line in triangle 80 years ago. We find Zetel's papers, in detail explain the Zetel's construction methods, and suggest two elementary construction methods. Our results are received in the process of Research and Education program in science high school.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.121-122
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• 2020

Universities that offer architectural engineering programs in Korea are making efforts to introduce innovation teaching methods to cultivate teamwork, creativity, flexibility of thought and practical skills needed for the Fourth Industrial Revolution. However, there is a lack of specific measures to support them. In this regard, this study investigated a method of application development for building construction courses applied with the innovation teaching methods. It mainly focused on 'improvement directions for existing learning management systems' and 'online learning support plans using the innovation teaching method' as research contents. It is expected that these improvement directions can be applied to the field of education through the development of mobile and web-based applications. In the follow-up research, the development of specific software for field application will be carried out.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1209-1215
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• 2009

Recently, Construction Projects are being much bigger and more complex. So the importance of Construction Planning and Management is increasing and increasing because of the Construction Projects is involved in a variety of construction-related subjects. Competitive of the Construction Industry decided Cost, Construction Duration and Productivity. But they were just focused on Cost Saving instead of Construction Duration and Productivity. However, they have to finish construction projects using minimum cost and duration with quality and function of required level for successful Construction projects. Thus, current high exchange rate and high period, it is clear to decrease construction cost and to do economic construction in huge Construction Projects and it means more advanced Construction Schedule Management needs for economic construction. But Construction Scheduling Planning, basic of Construction Schedule Management, adjusted contract period without Pre-Planning, just depending on experience and ability of Construction Engineer. Because of that, this study suggests new Duration Estimate Method using Stochastic Model in BIM Environment for advanced Construction Schedule Management. Existing Duration Estimate Methods are just modified wrong points of them or analyzed effective factors of construction schedule. However, New Duration Estimate Method is just consists of Stochastic Model and BIM Environment without existing Duration Estimate Methods. So, new method has creativity and specialty. After this research, it would be a great model in construction industry field.

• 한국건축시공학회지
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• 제19권3호
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• pp.255-261
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• 2019

건설업은 열악한 근무환경으로 인해 다른 산업에 비해 젊은 인력들이 건설업으로의 취업을 기피하여 국내 건설기능인력 수급에 어려움을 겪고 있다. 현재 대부분의 국내 건설인력들은 도제식 기술전수방식에 의해 기능을 습득하고 있다. 이에 본 연구는 도제식 기능교육방식에 대한 문제점을 도출하고 이에 대한 개선방안을 제시하였다. 현행 도제식 기능교육방식에 대한 개선방안으로 해당 건설현장에서 주기적으로 기능교육을 실시하고 이에 대한 교육이수 인증서를 각 건설회사에서 발급토록 하여 이를 교육경력으로 인정받을 수 있도록 제도를 정비하여야 한다. 또한 공공 건설기술교육원 및 정부지원 인가 전문기술학원 등과의 연계를 통해 신기술 신공법과 관련기술에 대한 이론교육을 무상으로 받을 수 있는 기회를 제공하고, 더 나아가 이 기간동안 생계유지를 위한 현실적인 적정 생계비용 지원정책을 수립하여 제공하는 방안이 시급히 필요하다.