• 대한조선학회지
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• 제14권3호
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• pp.1-4
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• 1977

The computer aided ship design and construction has become very popular one in a ship yard recently. For one of such a purpose a program is developed with Aitken's iterative interpolation method. From the sample calculation we can conclude that the program has a reliable acquracy for the calculation of hydrostatic data or loading manual. And also the program can be applicable to a ship construction by careful selecting of input data.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2008년도 정기학술발표대회 논문집
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• pp.694-697
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• 2008

건설 생애 전 주기 중에서 기획단계의 지반 조사로 시작되는 흙막이 공법의 선정은 잘못 선정될 경우 해당 프로젝트의 공사비와 공기에 끼치는 영향이 매우 크다. 그렇기 때문에 공법 선정의 요인 및 프로세스에 관련된 연구가 많이 발표되었지만 일반인들의 활용이 어려워 실용화되지 못하고 있다. 본 연구에서는 본 연구의 선행연구에서 개발한 흙막이 공법 선정 프로세스에 기반하여 웹 기반 의사결정 지원시스템을 개발하였다. ASP.NET을 이용하여 사용자들의 접근성을 높이고 자료의 보완 및 수정이 용이한 웹 기반 시스템인 Dr. Underground로 발전시켰다. 이 의사결정 지원 시스템은 일반인들이 쉽게 접근하여 건축물 기본요구 사항과 대지 조건, 인접 대지 조건을 입력하면, 해당 프로젝트에 적절한 흙막이 공법을 선정해주고 그에 대한 상세 정보를 제공해준다.

• 한국건축시공학회지
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• 제10권4호
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• pp.95-103
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• 2010

본 연구는 지붕방수공법 선정에 계층분석기법을 적용하여 의사 결정하는 과정을 제안하는 것이 목적이다. 지붕방수공법에 대한 경험에 대하여 본 연구에서 설계 전문가, 시공 전문가, 그리고 유지관리 전문가 그룹에 설문조사를 실시하였다. 설문조사의 첫 번째 계층은 성능, 경제적, 그리고 유리관리 측면으로 구성하였고, 설문의 두 번째 계층은 13개 항목으로 구성하여 Expert Choice를 이용하여 순위를 계산하였다. 설문 분석결과 각 전문가들은 다른 선택을 하였는데, 모든 분야의 전문가는 방수성능 측면을 가장 중요시 하는 것으로 나타났다.

• KIEAE Journal
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• 제8권1호
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• pp.99-104
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• 2008

This study surveys the types of form works used for constructing composite basement walls found in domestic construction sites. Based on expert surveys, the research provides criteria for selecting a form work type and cost-benefit analysis for different types of form works. In selecting a form work type, safety was considered the most important factor. It is induced from the survey that a successful construction requires a form work type that could solidly bear the lateral pressure of concrete rather than other types that cut back the cost and shorten the construction period. In the cost-benefit analysis, the benefit was the highest in 'euro-form+soldier system', and the cost was most competent in 'rib-lath+soldier system'. In considering benefit and cost together, 'euro-form+soldier system' was judged to be the best option. This is likely to be attributed to the following reasons: site workers are familiar with euro-forms because it is the most widely used; and, soldier system is more reliable in bearing lateral pressure compared to steel pipes.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.243-246
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• 2010

Recently, global warming problem is a major issue in international community. The carbon dioxide ($CO_2$) emissions in the construction industry is one of the main factors causing a global warming problem. Accordingly, various researches on $CO_2$ emissions caused by the construction industry is needed and construction methods which is low $CO_2$ emissions should be developed. In this study, $CO_2$emission cost is compared with roof waterproofing types in construction phase. As a result, the $CO_2$ emission costs of asphalt waterproofing is the highest. This research is to provide basic information for selecting appropriate construction methods in aspect of low $CO_2$ emission cost.

• 한국조경학회지
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• 제32권3호
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• pp.18-31
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• 2004

Ecological network can solve the ecological problems such as habitat cutting and fragmentation that are resulted from urbanization. Recently, rooftop biotope construction has been appeared as a usefull method for ecological networking in urban area. The objective of this study is to seek the possibility of rooftop greening introduction as well as to select target species for rooftop greening construction from the urban ecological network point of view. In order to select target species, we monitored two adjacent rooftop greening sites, where we found 22 species of birds and insects and 33 species of plants. We set criteria to select target species through documents research, and gave marks species according to the criteria with the help of specialists. We divided the target species into 5 groups on the basis of the 12 selecting criteria. In those two monitored rooftop greening sites, we did not find any species belong to group A, which is the best target species, but we found species belong to the other groups. Orthetrum albistylum, Sympetrum dawinianum belong to group B, which is the priority target species, 7 species besides Passer montanus, Coccinella axyridis, Agrionidae to group C, which is the possible target species, 6 species besides Atractomorpha lata to group D, which is the potential target species, and the others were found to be inadequate to the target species. We found Orthetrum albistylum, Sympetrum dawi-nianum to be the best appropriate target species in the two sites. According to the result of this study, the method of ecological network construction from the dra-gonfly habitat network point of view through the construction of rooftop habitat is ideal for Orthetrum albistylum, and Sympetrum dawinianum. For successful urban ecological network construction, selection criteria and construction techniqes & methods for rooftop habitat should be developed through future research.

• 한국건축시공학회지
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• 제10권4호
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• pp.49-57
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• 2010

고층 주거건축물 공사에서 적합한 거푸집의 선정 여부는 프로젝트의 성패를 좌우하는 중요한 요인이다. 그러나 현재 국내 고층 공사는 거푸집별 특성을 고려한 적합한 거푸집 선정이 이루어지지 못하는 실정이다. 합리적이고 체계적인 거푸집 선정을 위해서는 공사비뿐 아니라 공기, 품질, 안전 등을 포함한 종합적인 고려가 요구된다. 따라서 본 연구에서는 공사비, 공기, 품질, 안전측면에서 거푸집 선정에 대해 계층분석적 의사결정(AHP)의 과학적 방법론을 제시하여 거푸집 선정 프로세스를 과학적 방법으로 합리화 하고자 한다. 이를 위해 국내 고층 주거건축물에 사용된 거푸집 현황을 조사 후 이를 토대로 거푸집 대안을 선정하고 공사 전문가들을 대상으로 거푸집 선정 시 관리 우선순위 및 거푸집 적용성에 대한 설문조사를 실시하였다. 본 연구 결과는 고층 주거건축물 거푸집 선정 시 기존의 비과학적인 방법을 보다 과학적이며 합리적인 의사결정에 기여할 것으로 판단된다.

• 품질경영학회지
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• 제45권3호
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• pp.403-426
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• 2017

Purpose:?The purpose of this study is to analyze the causal relationship between top management 's leadership and construction quality management activities that affect construction management performance based on construction quality management. Methods:?As its method, the causal relationship between the leadership of top management and the key management factors of construction quality management activities affecting management performance is analyzed by using the structural equation model. The construction companies used in the analysis sample conducted surveys on companies that are conducting ISO, KOSHA, OHSAS, DQC, and so on. Results:?It was revealed that top management's leadership has a great influence on management performance and all management factors of construction quality management activities. However, safety management does not affect the management performance of construction quality management activities. And top management's leadership on management performance are explained by the mediating effect of cost, time, quality and communication among management factors of construction quality management activities. Conclusion:?In the previous study, the quality management activities and the ISO - based integrated total quality management system (TQM) applied in the manufacturing or service industries were presented as empirical results. However, this study presents the results of different studies by presenting empirical study results by selecting time, cost, quality, safety and communication as key management factors of quality management activities of construction companies through reviewing and analyzing previous studies in construction field.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2014년도 추계 학술논문 발표대회
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• pp.218-219
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• 2014

The selection of an appropriate contract method is vital for the successful operation of the project. However, there has been a lack of studies on objective decision making support models for use in the planning stage of a project contract. The present study had the goal of analyzing the factors that influence contract method selection, as an initial study for developing a project contract method selection model. The existing related studies were analyzed, and the factors considered in the literature were selected. Then, based on the findings, the opinions of an expert group on the important factors for contract method selection were collected through a survey. The collected opinions were analyzed using factor analysis, a statistical analysis method. The results will be utilized in the future as preliminary data for developing a decision making model for selecting a contract method.

• 아시안잔디학회지
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• 제16권2호
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• pp.75-83
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• 2002

The back-filled soil of the New Incheon International Airport construction site was reclaimed with sea sand in near the Young-Jong island. The primary study was carried out from August 1993 to June 1997 to study soil amendment and to select salt resistance turfgrass species. This study dealt with low maintenance area that included most part of open space of airport site. The second experiment, from October 1996 to August 1998, focused on soil amendment and selection of turfgrass species for alongside runway where turf area was maintained. Through two previous studies, propagation methods with zoysiagrass were tested for alongside runway and surrounding areas at 1998. The study of construction methods with zoysiagrass, vegetative propagation showed better results on visual quality and cover rating compare with seeding propagation. However, significant different between vegetative and seeding propagation was not showed on visual quality and drought tolerance after one year of plot establishment. The cover rating by seeding construction methods reached in excess of 70% of limitation suggested by the Incheon International Airport Cooperation. Zoysia net and sprigging net methods were the most suitable where there requires rapid and high rate of ground cover. Seeding propagation should be acceptable to obtain a resonable cover rating where there allows relatively longer period of completion. Therefore, it should be possible to attain a proper rating of ground cover on the site of open space, alongside runway or areas similar to the New Incheon International Airport which is being built on dredged seashore sand. However, the methods of soil amendment, selecting salt tolerance species, and proper construction procedure should be considered at the a time.