• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2007.05a
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• pp.70-73
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• 2007

생활수준의 향상으로 인하여 조명 및 디스플레이 제품을 이용하여 건물 및 건축물에 대하여 장식을 하는 것이 일반화 되어가고 있다. 본 연구에서는 옥외 및 옥내에 사인물로 사용되어지고 있으며 설치가 간편한 디스플레이 조명기기인 LED Tile을 개발하여 옥내 및 옥외용 디스플레이 조명 시장의 시장성 확보하기 위하여, 광학설계를 통한 고휘도 LED의 선정 및 배치, 케이스 설계를 실시하고 LED모듈에 AC 220V 전원을 직접 인가할 수 있으며 효율이 높고 최적화된 구동회로를 설계하였다. 또한 One Chip 마이크로컨트롤러를 사용하여 RGB LED의 광색가변 및 점멸 제어회로를 설계하고, LED 모듈간에 2개의 제어선만을 연결하여 다양하고 다이나믹한 패턴 동작(점멸, 광색가변)이 가능하도록 펌웨어를 설계하였다. 그 결과 설계된 LED Tile은 전체 크기가 $D130{\times}W130{\times}H50mm$로 매우 컴팩트하고 LED 배치 및 광학설계를 통하여 최대광도 60cd를 실현하였으며, LED Tile의 동작개수에 관계없이 설치가 간단하며 10개 이상의 디스플레이 패턴 제어가 가능하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.578-589
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• 2018

Building Integrated Photovoltaic (BIPV) system is a typical integrated system that simultaneously performs both building function and solar power generation function. To maximize its potential advantage, however, the solar photovoltaic power generation function must be integrated from the early conceptual design stage, and maximum power generation must be designed. To cope with such requirements, preliminary research on BIPV design process based on architectural design model and computer simulation results for improving solar power generation performance have been published. However, the requirements of the BIPV system have not been clearly identified and systematically reflected in the subsequent design. Moreover, no model has verified the power generation design. To solve these problems, we systematically model the requirements of BIPV system and study power generation design based on the system requirements model. Through the study, we consistently use the standard system modeling language, SysML. Specifically, stakeholder requirements were first identified from stakeholders and related BIPV standards. Then, based on the domain model, the design requirements of the BIPV system were derived at the system level, and the functional and physical architectures of the target system were created based on the system requirements. Finally, the power generation performance of the BIPV system was evaluated through a simulated SysML model (Parametric diagram). If the SysML system model developed herein can be reinforced by reflecting the conditions resulting from building design, it will open an opportunity to study and optimize the power generation in the BIPV system in an integrated fashion.

• Korean Journal of Heritage: History & Science
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• v.54 no.3
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• pp.90-105
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• 2021

The shape of the roof is very important, as it determines the beauty of the exterior of Korean wooden architecture. In particular, the curve of the eaves is the most representative of the characteristics of Korean wooden architecture. Rafters and buyeon (浮椽), flying rafters, create curves for the eaves, and buyeon in particular makes the roof lighter and more dynamic. Although the function and role of buyeon are already known, nothing is yet clear about the beginning of its use in Korean ancient architecture. Accordingly, the purpose of this study is to determine when buyeon was first used in Korean architecture. To this end, I examined various records, buildings, remains, and artifacts that have architectural shapes in Korea, China, and Japan. The results are summarized as follows. First, the use of buyeon in China appears during the Northern Qi Dynasty (北齊) in the mid-6th century, but became common in the 7th century during the Tang (唐) Dynasty. Second, the use buyeon in Japan appears in the mid-8th century, when the capital was relocated from Asuka (飛鳥) to Nara (奈良). It corresponds with the time that Japan began importing Chinese culture directly. Third, the use of buyeon in Korea may have been introduced to Baekje from China in the mid-6th century, but it was not common. It is believed that it became common after active exchanges with the Tang Dynasty during the Unified Silla Period in the mid-7th century.

• Monthly Duck's Village
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• s.64
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• pp.68-74
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• 2008

친환경인증제도란 환경에 농산물(예: 농약을 사용하지 않은 유기농산물), 친환경건축자재, 친환경건축물 등등 다양한 분야에 적용되는 인증제도입니다. 농약의 환경보전 기능을 증대시키고, 농업으로 인한 환경오염을 줄임으로 일반농산물을 친환경농산물로 허위 또는 둔갑표시하는 것으로부터 생산자.소비자를 보호하기 위해 유통과정에서의 신뢰구축으로 친환경농산물 생산과 공급체계를 확립하기 위한 것입니다. 그 동안 증산위주의 고투입농법에 의존해 온 결과 농업환경이 약화되어 지속가능한 농업생산을 위협하고 지나친 농약사용은 토양미생물, 천적감소 등 생태계 교란, 수질오염 및 농산물의 농약잔류문제를 야기하는 등 관련 국제규범이 제정됨으로써 환경보전 및 식품안전에 대한 국민의 관심제고에 적극적인 대응 필요에 만들어 졌습니다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.31 no.1
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• pp.1-8
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• 2018

The purpose of this study is to implement modeling by applying the parametric technique to the atypical trusses of rigid retractable large space structures. The retractable large space structure requires a lot of time and skill in modeling nonlinear shapes or generating, interpreting, and reviewing many models by alternative. To solve these problems, we introduce firstly parametric modeling tool, secondly, we analyze the connection of atypical three-dimensional trusses of a rigid retractable large-space structure, and finally model it as parametric components of the developed trusses. Therefore, it is a future study to make effective modeling of the openable roof by developing the components that can realize the modeling of the truss classified by the opening and closing method, respectively.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1993.04a
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• pp.153-173
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• 1993

폭약은 탄광에서 석탄이나 각종 광물을 캐거나, 건설토목현장에서 암반 제거를 위해서 주로 사용되었다. 전쟁에서 군사용으로 파괴를 위한 목적으로 사용되기도 하였으나, 최근의 동서화해 분위기와 남북통일이 무르익는 시대적 조류로 볼때 더이상 파괴용으로의 사용은 제어될 것이고 이제는 평화를 위하여, 건설을 위하여, 산업발전을 위하여 더 많이 사용되어지고 응용되어질 것이다. 작금의 첨단산업의 발달과 산업의 고도화로 우리 화약 업계에도 첨단발파기술의 개발에 많은 관심과 연구.개발을 진행중이다. 첨단발파기술의 응용사례를 소개하면, 건축토목 분야에서 노후 고층빌딩 및 굴뚝의 철거, 노후 교량 및 공장시설의 철거등에 활용되고 있으며, 위락서비스 분야에서 응용으로는 불꽃놀이를 들 수 있다. 최근에는 첨단 과학 장비를 이용하여 각종 꽃불의 모양이 음악과 미술등 예술적인 기능을 기억시킨 컴퓨터를 활용하여 보다 고차원의 공예술품(공학-예술)을 만들어낸다. 아울러 각종 기공식 발파시에도 예술적 기능과 웅장함을 가미하여 그 화려함을 극치에 다다르게 한다. 그외에도 로켓트 발사추진제등의 우주 개발에의 응용, 석유시추등 해양개발에의 응용, 각종 공학 실험연구에의 응용, 폭발 가공에의 응용, 의학에의 응용, 철강산업에의 응용 등으로 그 숫자를 이제는 일일이 나열하기 힘들 정도로 광범위해졌다.

• The Journal of the Korea Contents Association
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• v.16 no.3
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• pp.11-21
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• 2016

Recently, structure safety management techniques using cutting-edge technology(Displacement senor, sensor of acceleration) has emerged as an important issue owing to the aging of infrastructure such as bridge and building. In general, the structural monitoring system for structure safety management is based on IT technology and it is expensive to install. In this paper developed an image-based structure dynamic characteristic analysis system prototype to assess the damage of structure in a more cost-effective way than traditional structure health monitoring system. The inspector can take a video of buildings or other structures with digital camera or any other devices that is passible to take video, and then using NCC calculation for image processing technique to get natural frequency. This system is analysis of damage of the structure using a compare between the frequency response ratio and functions when problems are occurs send alarm to administrator. This system is easier to install and remove than previous monitoring sensor in economical way.

• Explosives and Blasting
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• v.40 no.4
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• pp.15-26
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• 2022

With the recent increase in old and dangerous buildings, the demand for technology in the field of structure demolition is rapidly increasing. In particular, in the case of structures with severe deformation of damage, there is a risk of deterioration in stability and disaster due to changes in the load distribution characteristics in the structure, so rapid structure demolition technology that can be efficiently dismantled in a short period of time is drawing attention. However, structural deformation such as unauthorized extension or illegal remodeling occurs frequently in many old structures, which is not reflected in structural information such as building drawings, and acts as an obstacle in the demolition design process. In this study, as an effective way to overcome the discrepancy between the structural information of old structures and the actual structure, access to actual structures through 3D modeling was considered. 3D point cloud data inside and outside the building were obtained through LiDAR and drone photography for buildings scheduled to be blasting demolition, and precision matching between the two spatial data groups was performed using an open-source based spatial information construction system. The 3D structure model was completed by importing point cloud data matched with 3D modeling software to create structural drawings for each layer and forming each member along the structure slab, pillar, beam, and ceiling boundary. In addition, the modeling technique proposed in this study was verified by comparing it with the actual measurement value for selected structure member.

• Journal of the Korea institute for structural maintenance and inspection
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• v.28 no.1
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• pp.70-81
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• 2024

In this study, Tridimensional Hybrid Isolation System(THIS) was proposed as a vibration isolator for traffic loads, combining vertical and horizontal isolation systems. Its efficacy in improving serviceability for vertical vibration was analytically evaluated. Firstly, for the analysis, the major vibration modes of the existing apartment were identified through eigenvalue analysis for the system and pulse response analysis for the bedroom slab using commercial structural analysis software. Subsequently, a 16-story model with horizontal, vertical and rotational degrees of freedom for each slab was numerically organized to represent the achieved modes. The dynamic analysis for the measured acceleration from an adjacent ground to high-speed railway was performed by state-space equations with the stiffness and damping ratio of THIS as variables. The result indicated that as the vertical period ratio increased, the threshold period ratio where the slab response started to be suppressed varied. Specifically, when the period ratio is greater than or equal to 5, the acceleration levels of all slabs decreased to approximately 70% or less compared to the non-isolated condition. On the other hand, it was ascertained that the influence of damping ratios on the response control of THIS is inconsequential in the analysis. Finally, the improvement in vertical vibration performance of THIS was evaluated according to design guidelines for floor vibration of AIJ, SCI and AISC. It was confirmed that, after the application of THIS, the residential performance criteria were met, whereas the non-isolated structure failed to satisfy them.

• Korean Institute of Interior Design Journal
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• no.19
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• pp.151-159
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• 1999

종교 공간으로서의 교회 건축물은 각 지역 단체생활의 정신적, 물질적으로 다양한 활동을 공급하고 있는 장소이다. 그러나 오늘날 변화무쌍한 현대 사회의 도심 교회들은 그 참여수가 점차 줄고 있는 젊은 세대들에게 충분한 만족을 주고 있지 못한 실정이다. 대부분의 영국 도심 교회가 변화가 어려운 예배당 공간 하나로, 각기 다른 기능을 요구하는 이용자들에게 다기능 공간을 공급하고 있으며, 과거에 잠재적 기능을 고려하지 않고 디자인된 대부분의 한국 도심교회들도 비슷한 조건의 문제 발생으로, 현 이용자들에게 또 다른 요구사항들과 불편함을 주고 있다. 이것은 이용자가 공간을 사용함으로 즐거움과 감흥을 얻기가 어렵게 구성되어 있음을 보여주고 있다. 오늘날, 젊은이들의 생활 패턴이 바뀌어 가고 있음으로 그 실태는 더욱 심각하게 나타나고 있다. 본 연구는 먼저 도심교회 공간의 전형적인 문제점과, 연령별 이용자 그룹의 우선권을 조사하고, 각기 다른 조건의 종교적 공간 사례 조사를 통해 이용자들 및 공간 디자인의 요구사항을 분석하고 있다. 이어서, 각 공간에 따른 문제 해결 방법을 성공적 공간디자인 사례자료를 토대로 정리한 후, 어떠한 종교적 공간에서도 적용 가능하도록 통합적으로 설정된 디자인목표를 바탕으로, 세가지 다른 방법의 계획서들을 제시하고 있다. 마지막으로, 이용자들의 응답을 통해 계획서를 평가하여, 그것에 근거한 결론적인 종합적 디자인 계획서를 제안하고 있다. 본 연구는 교회가 필요로 하는 기능에 따라 변화가 가능한 예배공간을 활용할 수 있는 디자인을 제시하는 데에 그 목적을 두고 있으며, 기존의 교회건물이 더욱 더 많이 사용자의 요구에 만족할 수 있도록 만들어질 수 있는가에 대한 방향이 제시되고 있다.