• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1993.05a
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• pp.18-19
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• 1993

지상의 기상환경조절이 불가능한 노지재배는 생산의 불안정요인이 대부분 기후조건으로 부터 기인된다. 반면에 시설원예는 피복재를 이용하여 격리된 공간을 만들고 그 속에 태양에너지를 저장하고 이를 제어하여 작물의 생육에 적절한 온실환경을 조성하는 수단이며 밀폐된 공간은 외부와 격리되어 있기 때문에 열 및 물질의 전달이 억제되므로 필요한 경우에는 열, $CO_2$, 습도 및 공기의 이동 등 보조에너지의 투입이 가능하므로 보다 적절한 지상환경조건을 조성할 수 있다. (중략)

• Journal of The Korea Institute of Healthcare Architecture
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• v.22 no.4
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• pp.79-86
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• 2016

Purpose: The purpose of this study is to identify the effect of Progressive Space Organization (ante-rooms) in Negative Pressured Isolation Unit(NPIU) such as National and Regional Isolation Units in Korea in order to build basic data for the evidence based design of Airborne Infection Isolation Units which should prepare and respond effectively to the public health crisis due to the hazardous airborne infectious disease. Methods: 1) Gas(SF6) test and analysis on the 23 Korean Isolation Units under operation. 2) Assessment of the isolation level of the space components by checking the Gas concentration. 3) Analysis of the Isolation Effectiveness according to Space Organizational levels. Results: 1) The higher segregation level is, the lower Gas(SF6) concentration is. 2) Too many segregations(anterooms) of Isolation Unit are not efficient for the prevention of infectious bacillus spread. For example, 4 level of segregation has similar segregation effect to the 3 level of segregation. Implications: Many anterooms in front of the isolated patient bedroom will guarantee the safe environment against the danger of hazardous airborne nosocomial infection. On the other hand, too many segregations is inefficient, expensive, inconvenient, narrow(unflexible) and so on. This study can be used as basic data for further development of design guidelines of isolation units.

• Spatial Information Research
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• v.16 no.3
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• pp.343-357
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• 2008

Hongdo and Huksando belong to the Dadohae national park parks in Korea and are famous sightseeing spots in Shinahn-gun. One of the keystone species in this area is otter (Lutra lutra). We accomplished field works for finding its present habitat and condition analyses for the potential habitat in the area via spatial analyses with digital elevation model and satellite imagery. Isolated condition with coastal cliffs was one of the superior conditions over habitat in the main land, but the road kills of small animals were also observed. Three underground eco-corridors were suggested for the protection of otter habitat in the Shinahn-gun area. Regional development strategies of Shinahn-gun should be focused on the protection of safe and pristine habitat for otter population.

• Journal of The Korea Institute of Healthcare Architecture
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• v.29 no.4
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• pp.29-35
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• 2023

Purpose: The 2015 Middle East Respiratory Syndrome (MERS) outbreak and the recent COVID-19 pandemic have highlighted the lack of negative pressure isolation rooms and the fragility of the healthcare system. The need for healthcare facility transformation for respiratory infectious diseases has become more prominent due to COVID-19, and the purpose of this study is to provide a foundation for the rapid, economical, and safe construction of negative pressure isolation wards. Methods: This study analyzes the current status of hospitals that have been converted to negative pressure isolation rooms, and provides architectural plans and examples to provide a reference for bedroom change. Research data of this study have been obtained by analyzing the drawings of negative pressure isolation wards of nationally designated inpatient treatment beds and urgent isolation beds. In addition, the relevant literature of urgent isolation beds has been analyzed to derive bedroom change type. Result: In this study, a total of 21 isolation bed conversion methods have been presented. Implications: In order to change efficiently from a general ward to an isolation ward, it is necessary to consider the actual hospital's infectious disease transmission patterns and facility conditions.

• Proceedings of the Korea Information Processing Society Conference
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• 2012.11a
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• pp.1292-1295
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• 2012

인구 과밀화 및 급격한 도시 팽창은 지상공간에서 거주하는 인간 삶의 질을 위협하고 있다. 따라서 지상공간의 개발을 억제하여 환경을 보호하고 도시 공간 이용의 효율성을 최대화하기 위해 지하 공간을 개발하고자 하는 움직임이 활발하다. 자연환경으로부터 격리된 구조인 지하공간은 지상공간에 비해 실내 공기 질을 쾌적한 상태로 유지하기 어려운 밀폐된 환경이므로 오랜 시간동안 상주하는 거주자 및 한시적 이용자들의 건강에 영향을 미치는 온도, 습도, $CO_2$, 먼지 등의 환경을 제어하기 위한 기술 개발이 필요하다. 본 연구에서는 지하공간의 쾌적도 향상을 위해 온 습도 및 $CO_2$, 먼지센서를 이용한 통합 센서를 제작하여 현재 지하공간의 환경정보를 실시간 모니터링하고 실내공간의 쾌적 지표를 기반으로 환풍기, 송풍기 등의 디바이스를 제어하기 위한 USN 기반의 환경제어시스템을 구현한다. 제안한 시스템을 통해 지하공간의 환경을 개선할 뿐만 아니라 고가의 계측 장비로 인한 비용 절감 및 이동성과 확장성 등의 부가적인 효과를 기대한다.

• Korean Journal of Plant Taxonomy
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• v.47 no.4
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• pp.289-296
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• 2017

The three self-compatible, terrestrial orchids Cephalanthera erecta, C. falcata, and C. longibracteata flower synchronously in sympatric populations. Cephalanthera erecta and C. longibracteata, which have white flowers that do not fully open, are predominantly autogamous, whereas the food-deceptive C. falcata, whose bright yellow flowers open completely, is predominantly outcrossing. The formation of hybrids rarely occurs between species owing to strong prepollination barriers (floral isolation). If these three species have evolved toward the prevention of interspecific hybridization, we can expect that the spatial distribution patterns of the three species would be characterized as spatial segregation (i.e., 'spatial repulsion') from each other. To test this prediction, we studied the three Cephalanthera species in sympatric populations showing coincident flowering within Yeonwhasan Provincial Park (YPP, Gyeongsangnam Province, South Korea). We found strong spatial aggregation in each population and spatial independence in the interspecific spatial distribution, differing from previous studies. We further hypothesize that Cephalanthera species in sympatry within YPP are distributed somewhat randomly in space, perhaps due to the sharing of similar mycorrhizal fungi.

• Journal of the Korean Geographical Society
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• v.36 no.5
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• pp.527-538
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• 2001

Viewed from the framework of world system, international migration is connected sometimes to unequal power relations by prejudice and discrimination in destination areas, or to equal power relations by intentional effort for harmonious multiculturalism. According to the existing ethnic relation theory, assimiationism, it is natural that ethnicity is fading away as the foreign immigrants of different ethnic background have long limed in a destination area, and thus the relative urban ethnic places are weakened and finally dissapeared. Through the various examples particularly on the United States, however, ethnicity would not be easily fading-away but be sustained for long time. Also, the characteristics of ethnicity or ethnic place are sometimes reivented or reconstructed as the various situation of multiculturalism is affected by postmodernism. Whether it is the thing made by ethnic segregation or by ethnic congregation, ethnicity and ethnic place are evidently a kind of affluent resources of culture and economy in the destination areas.

• Proceedings of the Korea Electromagnetic Engineering Society Conference
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• 2000.11a
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• pp.324-327
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• 2000

본 논문은 차세대 이동 통신인 IMT-2000(International Mobile Telecommunication-2000)용 기지국에 장착될 사용되어 질 이중 편파 다이버시티 안테나를 개발하는데 있다. 내용은 이중 편파 다이버시티를 이용한 안테나의 대역폭과 port간 격리도 및 방사 패턴을 설계와 제작을 통해 알아보았고, 안테나 후면에 전력 증폭기를 장착시키기 위하여 EIRP(Effective Isotropic Radiated Power)를 중심으로 송신 출력을 계산하고 이런 계산식을 바탕으로 전력 증폭기를 안테나 후면에 장착하여 실제 공간상에서 안테나를 통해 방사되는 출력 전력을 실험을 통해 알아보았다.

• Proceedings of the Korea Contents Association Conference
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• 2016.05a
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• pp.83-84
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• 2016

본 연구는 안의삼동을 대상으로 19세기 관찬지리지와 관련 문헌에서 추출한 동천의 경관구조를 살펴본 결과 화림동 5개소, 심진동 9개소, 원학동 17개소가 확인되었으며, 동천 내 주요지점들은 각각 경구집합형, 경점연속형, 복합형 등의 경관구조 분포를 지님과 동시에 동천의 집합체로서 세거지와의 격리, 주머니 공간 형성을 통해 선계로서의 장소성을 부여하였다.

• Tunnel and Underground Space
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• v.26 no.1
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• pp.12-23
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• 2016

For a successful accomplishment of Carbon Capture Sequestration (CCS) projects, appropriate injection conditions should be designed and optimized for site specific geological conditions. In this study, we evaluated the effect of injection conditions such as injection temperature and injection rate on the geomechanical stability of CCS system in terms of TOUGH-FLAC simulator, which is one of the well-known T-H-M coupled analysis methods. The stability of the storage system was assessed by a shear slip potential of the pre-existing fractures both in a reservoir and caprock, expressed by mobilized friction angle and Mohr stress circle. We demonstrated that no tensile fracturing was induced even in the cold CO2 injection, where the injected CO2 temperature is much lower than that of the reservoir and tensile thermal stress is generated, but shear slip of the fractures in the reservoir may occur. We also conducted a scenario analysis by varying injected CO2 volume per unit time, and found out that it was when the injection rate was decreasing in a step-wise that showed the least potential of a shear slip.