• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.374-375
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• 1999

오늘날 경제적 생활 환경의 개선으로 인하여 현대인의 생활에 많은 변화를 가져오고 있다. 제한된 공간에서 인간 활동은 지하생활공간이라는 새로운 활동영역을 창출하였고, 이에 따라 실내에서의 거주 시간은 더욱 증가하고 있다. 지하생활공간이라는 용어가 일반인들에게는 다소 생소하게 받아들여질 수 있지만 여기서 말하는 지하생활공간이라 함은 불특정 다수인이 이용하는 지하철, 지하상가, 지하주차장, 지하 보ㆍ차도, 지하터널 등을 말하며 개인의 생활 양식에 따라 단시간 이용하거나 또는 생활터전으로 장시간 거주할 수 있는 공간이라고 할 수 있다.(중략)

• KIEAE Journal
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• v.2 no.4
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• pp.57-64
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• 2002

Nowadays the importance of Building Remodeling as a means to create an architectural environment capable of responding to the social, economic changes has increased more than before. After long time pass, the aged building have faced the need for the overall repair of the structure and function. Remodeling is much more saving the time and cost than new construction in the office building. This study was focused in functional and efficient evaluation. Based on these points, we developed the evaluation factors, and verified a validity of evaluation factors through a survey. The purpose of this study was focused on the Analysis for Recognizing the priority of Indoor Environmental Factors in office Remodeling. This study provides us the competitive guidance of remodeling. The owners and tenants take the maximum efficiency with the minimum cost.

• Proceedings of the SAREK Conference
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• 2006.06a
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• pp.283-288
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• 2006

Indoor Air Quality Guideline of Kindergarten in korea didn't consider the vulnerable properties of children to indoor air pollutants. For this reason, Suggestion for the IAQ guideline of formaldehyde and minimum ventilation rate was made in this study. Suggested IAQ guidelines for formaldehyde in the respect of children's vulnerable immune system is $30{\mu}g/m^3$ and $50{\mu}g/m^3$, and for the ventilation rate 11.9 ACH, 5.8 ACH, respectively. This value is based only formaldehyde and CO2 concentrations in child-care room of Kindergarten and needed to be verified by further investigations and studies. However it is discovered that lower formaldehyde concentration can do mal-effects to children's health by literature review.

• Journal of odor and indoor environment
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• v.17 no.4
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• pp.303-314
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• 2018

The urban railway system is a convenient public transportation system, as it carries many people without increasing traffic congestion. However, air quality in urban railway environments is worse than ambient air quality due to the internal location of the source of air pollutants and the isolated space. In this paper, characteristics of particulate matter (PM) pollution in urban railway environments are described from the perspective of diurnal variation, chemical composition and source apportionment of PM. PM concentrations in concourse, platform, passenger cabin, and tunnel are summarized through an analysis of 34 journal articles published in Korea and overseas. This information will be helpful in developing effective policies to reduce PM pollution in urban railway environments.

• Particle and aerosol research
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• v.16 no.3
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• pp.65-72
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• 2020

In this study, the indoor fine dust concentration in an office of the Korea Knowledge Industry Center was measured for about 80 hours when the concentration of atmospheric PM_2.5 was very high. The effect of the operation of the air cleaner and the forced ventilation system on the indoor PM_2.5 was investigated, and the particle size distribution of the indoor and outdoor particles was analyzed. When forced ventilator and air purifiers were partially used, the indoor PM_2.5 concentrations were maintained between 27.7 ㎍/㎥ and 32.9 ㎍/㎥ when the atmospheric PM_2.5 was 127.7 ㎍/㎥ to 141.6 ㎍/㎥ during working hours. It is more effective to operate the air purifier without operating the forced ventilation system when the concentration of the PM_2.5 is high since the PM_2.5 penetrating the installed filter is continuously introduced indoor from the outside.

• Proceedings of the SAREK Conference
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• 2005.06a
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• pp.14-14
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• 2005

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.137-138
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• 2002

입자상 물질은 자연적 또는 인위적인 오염원에 의해 직접 대기로 배출되거나 가스상 물질의 전환 과정을 통해 생성된다. 서울을 비롯한 우리나라 시정(visibility)은 맡은 부분이 가스상 물질의 전환을 통해 생성된 미세 입자에 영향을 받고 있기 때문에 미세 입자의 생성(formation)과 성장(growth) 변화를 연구하는 것은 시정(visibility)의 원인을 밝히는 중요한 과정이라고 할 수 있다. (중략)

• The Science & Technology
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• v.32 no.9 s.364
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• pp.30-31
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• 1999

새로운 21세기에는 위락산업이 유명한 성장산업으로 떠오르게 된다. 한여름에도 활강을 즐길 수 있는 실내스키돔이 세워지고 원통모양의 '플라이어웨이 돔'에서 우주 비행복으로 갈아입은 뒤 200km의 돌풍을 타고 우주인처럼 유영을 즐길 수도 있게 된다. 2020년경에는 우주호텔이 등장하고 해저캠프촌도 건설된다. 또 아마존강에서 환경친화형 여행도 즐기고 에베레스트 등반 희망자도 줄을 잇게 된다.

• Proceedings of the Korean Fiber Society Conference
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• 1997.10a
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• pp.364-368
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• 1997

The purpose of this Study was to determine thermal sensation and physiological responses for men in summer indoor environment, under various air temperature and relative humidity, with male university students. Subjective Evaluation, Heart Rate Variability(HRV), Electroencephalogram(EEG) were examined. We found that comfort of people was achieved at 50% R.H., 24C, and the difference of skin temperature was found at the calf area as air temperature changes. At low air temperature and low humidity, heart rate was decreased, but there was no change at brain wave, keeping a-wave.

• Journal of Korean Society for Geospatial Information Science
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• v.21 no.2
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• pp.99-105
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• 2013

In rapidly developing urban areas that include high-rise, large, and complex buildings, indoor and outdoor maps in GIS become a basis for utilizing and sharing information pertaining to various aspects of the real world. Although an indoor mapping has gained much attentions, research efforts are mostly in 2D and 3D modeling of terrain and buildings. Therefore, to facilitate fast and accurate construction of indoor GIS, this paper proposes a semi-automatic method consisting of preprocessing, 2D mapping, and 3D mapping stages. The preprocessing is designed to estimate heights of building interiors and to identify noise data from point clouds. In the 2D mapping, a floor map is extracted with a tracing grid and a refinement method. In the 3D mapping, a 3D wireframe model is created with heights from the preprocessing stage. 3D mesh data converted from noise data is combined with the 3D wireframe model for detail modeling. The proposed method was applied to point clouds depicting a hallway in a building. Experiment results indicate that the proposed method can be utilized to construct 2D and 3D maps for indoor GIS.