• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2020년도 가을 학술논문 발표대회
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• pp.173-174
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• 2020

In modular construction, safety management is required to prevent the occurrence of risk factors such as lifting work and high place work due to the characteristics of the construction method. Therefore, this study is a basic study for safety management of modular construction, and the purpose of this study is to compare and analyze the classification system of modular construction derived by analyzing the construction process of the existing case. Based on the results of this study, the safety management classification system will be used in future research to derive safety management factors in modular construction.

• 한국재난정보학회 논문집
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• 제16권4호
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• pp.747-757
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• 2020

연구목적: 본 연구는 폭염으로 인한 유사 환경 조건이라도 개인의 내적 특성에 따라 다른 대처를 하게 되어 피해의 정도에 개인차가 있음을 주목하였다. 이에 개인의 심리적 특성과 온열질환 증상 경험의 영향 관계를 분석하였다. 연구방법: 건설노동자를 대상으로 온열질환 증상의 경험 유무에 따라 개인특성의 설문과 폭염 피해에 연관성이 있을 강박신념, 자아 존중감, 성격에 대한 심리척도를 통해 영향관계를 분석하였다. 연구결과: 로지스틱 회귀분석 결과, 책임감은 온열질환 증상의 경험에 정(+)의 영향, 집단에서의 자아 존중감은 온열질환 증상의 경험에 음(-)의 영향을 미치는 것으로 나타났다. 결론: 본 연구는 폭염으로 인한 피해자의 심리적 특성을 파악하기 위하여 폭염에 취약한 대상인 건설노동자를 대상으로 강박신념, 자아 존중감, 성격을 분석한 첫 번째 연구로 기초자료를 제시하였다.

• 건축역사연구
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• 제23권2호
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• pp.39-52
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• 2014

This study researched changes over time regarding the location and spatial characteristics of modern meteorological stations, and examined the characteristics of modern meteorological station construction using the location and spatial characteristics of the Busan Meteorological Station. First, meteorological stations were located in port areas, and then moved to high altitude areas for stable meteorological observation beginning in the transition phase. Here, office buildings and residences were joined, but were separated due to the increase in functions from the stabilization phase. Second, as for spatial composition, in the establishment phase, existing buildings were used, and the scale of newly constructed buildings differed according to time and area. However, after the Japan-Korea Annexation, with increased funds and increased observation equipment, floor plans subdivided by function started to appear. In the stabilization phase, space was subdivided with redundancy due to the increase in functions. In the wartime transition phase, '一' shaped floor plans with redundancy became the norm. Meanwhile, the location of the maritime customs where the first meteorological observations took place after the opening of the ports, and the location and construction of the Busan Temporary Observatory built in the meteorological observation transition phase (1905) were investigated. Also, through the investigation of the Busan Meteorological Observatory, newly constructed before 1934, the location and spatial characteristics of modern era meteorological observatories were studied.

• 한국건설관리학회논문집
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• 제7권4호
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• pp.177-183
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• 2006

Risk-based estimation has been successfully introduced into the construction industry. By incorporating historical data associated with probability analysis, risk-based estimate is an effective decision support aid in considering whether to launch a particular project. The industry challenges, however, especially related with management issues, such as labor shortage, wage growth, and supply chain complexity, have often resulted in poor cost performance. The insufficient assessing the project characteristics (i.e., resource availability, project complexity, and project delivery method) can be the main reasons in the poor cost performance. Because the accuracy level of cost performance prediction can be enhanced by extensive evaluation of the subject project characteristics, a new approach for predicting cost performance in an earlier stage of a project can improve the Industry substantiality, in other words, value maximization. The purpose of this paper is to develop a new methodology in developing a risk-based estimate tool by incorporating extensive project characteristics. To do this, an extensive industry survey was conducted from both private and public sectors in building industry in Korea. In addition, significant project characteristics were identified in terms of cost performance indicator. Although the data collection is limited to Korean industry the suggested approach provides the industry with a straightforward methodology in risk management. As many researchers maintained that front-end planning efforts are crucial in achieving the successful outcome in building projects, the new method for risk-based estimation can Improve the cost performance as well as enhance the fulfillment in terms of business sustainability.

• Steel and Composite Structures
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• 제49권6호
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• pp.701-711
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• 2023

In order to fully reflect variation characteristics of composite concrete dam health state, the monitoring data is applied to diagnose composite concrete dam health state. Composite concrete dam lesion development to wreckage is a precursor, and its health status can be judged. The monitoring data are generally non-linear and unsteady time series, which contain chaotic information that cannot be characterized. Thus, it could generate huge influence for the construction of monitoring models and the formulation of corresponding health diagnostic indicators. This multi-scale diagnosis process is from point to whole. Chaotic characteristics are often contained in the monitoring data. If chaotic characteristics could be extracted for reflecting concrete dam health state and the corresponding diagnostic indicators will be formulated, the theory and method of diagnosing concrete dam health state can be huge improved. Therefore, the chaotic characteristics of monitoring data are considered. And, the extracting method of the chaotic components is studied from monitoring data based on fuzzy dynamic cross-correlation factor method. Finally, a method is proposed for formulating composite concrete dam health state indicators. This method can effectively distinguish chaotic systems from deterministic systems and reflect the health state of concrete dam in service.

• 한국건설관리학회논문집
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• 제1권4호
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• pp.82-90
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• 2000

낙후된 국내 건설관리기술을 선진화$\cdot$합리화하기 위한 방안 중의 하나로 공정-공사비 통합관리가 많은 주목을 받고 있다. 정부에서도 공정과 공사비의 통합관리의 필요성을 인식하고 이의 도입을 적극검토하고 있다 실제로 해외공사를 통해서 양성된 국내 공정관리 전문가들의 노력으로 최근 일부 공공기관의 건설사업에서는 공정-공사비 통합관리를 부분적으로 활용하고 있는 상황이다. 그러나 그 기법 및 전산모델이 이론에 국한된 것이거나 국내의 특수한 여건을 수용하지 못하는 것이 대부분이기 때문에 활용에 많은 어려움이 있으며 국내 건설환경에 완전하게 정착되지 못하고 있다. 본 연구의 목적은 통합관리의 정착을 지연시키는 국내의 특수한 여건 및 문제점을 파악하고 이를 토대로 국내 건설현장에서 적용할 수 있도록 공정-공사비 통합모델의 개선방안을 제시하는 것이다.

• 한국실내디자인학회논문집
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• 제24권6호
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• pp.107-118
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• 2015

Today, The representation of the modern space is experimented with shape and surface of the de-structural point of view to make architecture and space, in terms of not being able to make defined by single regulation. However, it can correspond to the rapidly changing modern, but it is easy to fade of architecture fundamental meaning. Along with the need for the rise of the construction of fundamental space, should be built a 'tectonic' spatial, which is said to be building of logos. Tectonic, as norms for expressing the fundamental meaning of architecture, as to expression of construction, be unfolded with dualism such as science and art, technology and express, structure and formation, and it was introduced into the architecture through the construction expression of space that was a tectonic discussion of 19c german architects. On the other hand Constructivism which is avant-garde formative movement with Russia revolution, constructed 'sculpture' with the formative principles as tectonic. Tectonic's Formative characteristics can draw a conclusion with of tectonic characteristics of constructivism sculpture, space of logos will be realized through its study. Other hand, The pavilion, as symbol space, can be analyzed by tectonic properties, Pavilion, meaning the space is expressed in a variety of tectonic expression. As tectonic construction, fundamental ideology and symbolization of space is revealed metaphorically and visually.

• 한국빅데이터학회지
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• 제4권1호
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• pp.129-142
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• 2019

건설 프로젝트는 불완전한 생산환경으로 인해 많은 건설실패가 발생하고 있다. 본 연구는 건설 현장에서 건설 기간 동안 ICT 자원을 임대하여 활용하고, 물리적인 유선 통신망 대신 스마트 폰, 테블릿 PC, 노트북 등 Mobile Device를 활용하는 Mobile Cloud Computing Service(이하 M-Cloud)를 도입할 경우 M-Cloud가 갖고 있는 신속정확성, 공유협업성, 편재성 등의 특성들이 건설현장에 참여하고 있는 다양한 프로젝트 참여자들 간의 사회적 관계망에 영향을 주어 참여자들 간의 정보교환 및 융합을 촉진하고, 상호 신뢰증진과 함께 궁극적으로 프로젝트 기대성과에 큰 도움을 줄 수 있다는 것을 실증적인 방법으로 연구하였다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.392-397
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• 2009

Gravity pressure vessels find their use in the wet oxidation of sewage sludge, which can be defined as the oxidation of organic and inorganic substances in an aqueous solution or suspension by means of oxygen or air at elevated pressures and temperatures. Numerical analyses were carried out for investigating the flow characteristics and wet air oxidation in the reaction vessel with various conditions such as supply oxidation and the supply positions of oxidation, etc. Wet air oxidation is promoted in the vicinity of bottom in the reactor with increase of oxygen supply. Also, it is the best condition to the oxidation supply position of 150 m and oxidation flow of 0.06 kg/s in the GPV reactor as the remnant of sludge and creation of organic acids.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 2004년도 제5회 압연심포지엄 신 시장 개척을 위한 압연기술
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• pp.207-215
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• 2004

There are various characteristics called for in work roll and intermediate rolls for cold rolling mills. Among these characteristics, the two main requirements are to ensure the quality of the rolled products and to reduce roll cost. To achieve these needs, resistance to wear, to thermal shock and to contact fatigue are especially important. This paper describes that new material(named DSR1) for intermediate rolls which greatly increases rolling campaign and improves resistance to wear has been developed. DSR1 was successfully manufactured and has been used in the cold rolling mill. It showed that Trial product was homogenous in hardness distribution and sufficient usable diameter. Also in service test, trial product is much more excellent rolling performance than conventional $5\%Cr$.