• Journal of the Korea Institute of Building Construction
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• v.21 no.6
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• pp.653-664
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• 2021

As the construction standards for energy-saving eco-friendly housing have recently been strengthened, the proportion of window work has increased with the demand for high-efficiency housing. Windows have high frequency of use, and there is the potential for many defects to occur depending on the characteristics of construction. According to a government agency's survey of defects in public rental apartment housing, defects in the windows work accounted for the highest portion of complaints received. Accordingly, related previous studies were considered, and it was found that the existing studies in Korea lacked research that reflected the construction characteristics of window work and the importance of maintenance. In addition, existing overseas studies considered both the constructor and the resident's position, considering the cost aspect together, and showed a trend of structuring the relationship between defects and causes. Therefore, this study will analyze the causes of defects that can occur in the construction phase of the windows work, reflect the construction characteristics, and derive major factors that consider the importance of maintenance based on the possibility of recurrence after repairing defects. Ultimately, this research will contribute to preventing defects in the construction phase and reducing maintenance costs by presenting a highly effective defect management plan through selecting the major factors for each defect type that can be intuitively judged by analyzing the causal relationship between defect types and causes.

• KIEAE Journal
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• v.2 no.2
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• pp.15-22
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• 2002

Importation of mass production of building elements with standardization are vital way for environment-friendly architectural planning, which it makes the lifespan of a building longer than normal with easier maintenance and remodeling. The advantage might be magnified here in Korea since typical types of apartment house are dominated in our construction market. For the purpose, a series of pre-manufactured window systems is one of the optimal elements to be prototype building modules. In the design process of the system windows, lots of consideration should be involved and they include aesthetics, thermal performance, noise reduction, airtightness, and so forth. A real survey on the ready-made window systems has been performed and its optical issue related to luminous peculiarity is what is of major interest in this study. In addition, technical review on more advanced window products and their adaptable potential for the integration with fundamental architectural design elements were carried out.

• Proceedings of the KOR-KST Conference
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• 2007.02a
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• pp.467-475
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• 2007

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.12
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• pp.7331-7339
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• 2014

As the Korean government initiates the Han-style campaign, the efforts and expectations for the modernization and industrialization of Hanok are growing. Accordingly, a major R&D project sponsored by the government is in progress for the development of related technologies, in which the development of a Hanok design support system based on Building Information Modeling(BIM) technology is included as one of the major subjects. However, the development of design tools for Hanok so far has not focused on the windows and doors, which is another major element of Korean traditional architecture. Therefore, this study developed a BIM-based design tool for Hanok windows and doors as an approach to the integrated design of various Hanok elements and their applications to modern buildings. To this end, the characteristics of Hanok windows and doors were analyzed first in terms of the location, opening method, style, components, and the over-all construction. A design tool was then developed with the parametric modeling functions of the $ArchiCAD^{(R)}$system. The applicability and efficiency of the developed tool were verified with design simulations. This is expected to contribute to not only the application of Hanok windows and doors to modern buildings but also to the further development of an integrated Hanok design system.

• Journal of KSNVE
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• v.11 no.6
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• pp.684-693
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• 2001

• Journal of the korean veterinary medical association
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• v.38 no.7
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• pp.638-652
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• 2002

• Journal of the wind engineering institute of Korea
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• v.22 no.4
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• pp.155-161
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• 2018

In modern society, damage caused by strong winds such as typhoons is expected to increase due to urbanization and global warming. In order to test the reinforcement performance of the newly developed window protection device, two-point force test and uniformly distributed load test were carried out on non-reinforced plate glass. It reinforcement performance of the window protection device was evaluated based on the flexural performance improvement. The analytical performance of the window protection device was evaluated by analysis using differential equations of elastic loading method and deflection curve and Midas-Gen. First, the analytical window protection device was evaluated by formulae derived using differential equations of elastic loading and deflection curve. The validity of the derived formulae investigated by comparing the maximum deflection of the central part of the plate with the experimental value and the theoretical value at maximum load. Then the results were compared with those by finite element FE method using Midas-Gen. Under the experimental conditions, with the window protection device, stress reduction effect up to 40% and deflection reduction up to 71.4% under the same load were obtained. It was also found that it is advantageous to perform the FE analysis using the plate element when the performance is evaluated because the error of FE analysis result using plate elements is far less than that using beam elements.

• Journal of KSNVE
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• v.11 no.1
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• pp.26-28
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• 2001

최근의 회전 기계 시스템은 단위 중량 당 에너지 효율을 높이기 위하여 고속화 소형화(경량화) 추세이며 이에 따라 불안정성이 증대되는 경향이 있다. 이를 개선하기 위하여는 회전기 요소의 연구가 필수적인데 이는 결국 기계시스템의 내구성 및 안전과 경쟁력 향상에도 직결되는 중요한 사항이 된다. 여기에서는 고속회전기 요소 및 시스템 안정화 해석설계 기술과 관련. 한국과학기술연구원(KIST) 트라이볼로지 연구센터의 로터다이나믹스팀이 현재 보유하고 있거나 개발 중인기술들을 소개함으로써 향후 고속화를 통한 회전기계 시스템의 세계적 경쟁력 향상은 물론 새로운 관심사로 떠오르는 지능형 회전기기 시스템과 초소형 회전기기 시스템에 관련된 연구 개발을 소개하고자 한다.(중략)

• Proceedings of the Korean Information Science Society Conference
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• 2000.10c
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• pp.671-673
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• 2000

본 논문에서는 분산공유메모리 다중프로세서 시스템에서 하드웨어 구성요소와 실행환경이 시스템의 전체 성능에 미치는 영향을 시뮬레이션을 통하여 분석한다. PARSEC[1,2]을 이용하여 분산공유메모리 다중프로세서 시스템을 실제 실행환경에 근접하게 모델링하고 그 모델링된 시스템상에 2D FFT를 가상 실행하는 방식의 시뮬레이션 결과, 일반적으로 성능분석을 할 때 성능요소로 고려하지 않는 군소 하드웨어 요소들이 시스템 구성에 따라 시스템의 전체 성능에 상당한 영향을 미침을 밝힌다. 또한 반복순환 구문의 오버헤드, 코드최적화 등 실행조건에 따른 성능의 변화도 정량적으로 분석한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.2
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• pp.955-961
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• 2013

This study aimed for the scientific approach of Korean traditional house, so called Hanok, by analyses of structural elements and thermal environmental performance. Hanok is a very unique vernacular architectural style of the Middle East Asia that fits with climate conditions of the Korean Peninsular, designed to withstand high temperature and humidity in summer and cold and dry in winter seasons. In order to evaluate thermal environment of Hanok, its sectional structure such as floor, wall, roof structure and Ondol which is Korean traditional floor heating system, was built in 3D, as well as heat transfer mechanism of its composing elements was analyzed through 3 dimensional steady state analysis. The results of the thermal environmental performance of Hanok will be used as a basic datum of design guidelines for accomplishing ecologic housing fitted with local climate.