• 한국재난정보학회 논문집
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• 제18권3호
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• pp.672-686
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• 2022

연구목적: 본 연구의 목적은, 지체 장애인 대피경로 시설에 영향을 미치는 계획요인들을 도출하고, 각 시설별로 영향을 미치는 계획요소들을 규명하고자 하였다. 연구방법: 표본수의 문제와 다중공선성의 문제를 해결하기 위해 PLS(부분최소제곱) 회귀분석을 활용하였다. 연구결과: 분석결과, 각 시설별로 가장 중요한 계획요소는 출입문 : 출입문 닫히는 시간(1.131), 복도 : 휠체어를 위한 경사로(1.227), 계단 : 계단 비상조명(1.117), 대피공간 : 대피공간 편의시설(1.106)으로 도출되었다. 결론: 효율적인 장애인 대피경로를 계획하기 위해서는 일괄적인 반영이 아닌 장애인들의 인식, Needs, 만족도를 고려한 유니버설 디자인을 고려해야 한다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제28권4호
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• pp.89-97
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• 2022

Purpose: Because of the recent COVID-19 pandemic, there have been many cases of using portable negative pressure unit to convert general wards into temporary negative pressure isolation wards. The purpose of this study is to analyze the indoor environment of the switching type wards. Methods: Field measurements and experiments were conducted in a medical facility. Air volume, wind speed and pressure difference were measured in non-occupant state. Dispersion tests were performed with gas and particle matter. Results: The pressure difference between the wards and the corridor was higher than -2.5 Pa in normal situation. However, in the gas and particle dispersion tests, it was found that there were concerns about the spread through leakages in low-airtight walls or ceilings. In addition, it was confirmed that the pressure imbalance in ducts through the non-sealed diffusers could cause back flow during portable unit operation. Furthermore, when there was a pressure difference between adjacent wards planned to be at same pressure level, the possibility of the spread through the leakages was found. Implications: When using portable units for making switching type wards, it is necessary to create airtight space and seal the non-operation diffusers. In case of operating the air handling unit, T.A.B must be performed to adjust the duct balancing.

• 대한본초학회지
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• 제28권3호
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• pp.61-68
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• 2013

Objectives : A precise and simple system of nomenclature was required to avoid error, ambiguity or confusion. Although medicinal plants must be produced or distributed based on a pharmacopoeia described origin including scientific name, the Korean Pharmacopoeia tenth edition (KP 10) had many names against the nomenclature. Therefore, this study aimed at searching correct scientific names for 241 plants in KP 10. Methods : Authoritative databases - The Plant List, International Plant Name Index, YList, Tropicos, eFloras, World Checklist of Selected Plant Families, The Global Compositae Checklist, The International Legume Database and Information Service, et al. - and previously performed researches, floras were cross-checked. Results : The arrangement of this list was designed for four cases, errors including illegitimate, nomenclatural synonyms, recommended names and decision reserved names. Consideration about the scientific names produced nine correct names for ten misspellings and illegitimate, and thirty-six correct names for forty-one nomenclatural synonyms. These results should be reflected in the next of KP 10. Separately, ten recommended names were also suggested for taxonomic synonyms which had been used indiscriminately due to diverse taxonomic opinions. In addition to those, decision reserved names were suggested for thirteen species which had been corridor of uncertainty. Then again, there was need to study about authorship, because KP 10 did not keep recommendations for author citations. Conclusions : Correction of scientific names for some medicinal plants which violated the International Code of Nomenclature would be useful to improve the accuracy of a Pharmacopoeia as the criterional materials.

• 건축역사연구
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• 제31권1호
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• pp.7-17
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• 2022

The purpose of this thesis is to understand the shape of The Sijeon (Licensed-Markets) established around the Jongno and Namdaemun-ro Avenues in Hanyang during the Joseon Dynasty in the 19th and 20th centuries and then to examine the relationship with the urban structures of Hanyang City. By investigating the excavation results of the Cheongjin and Gongpyeong areas, drawings, photos, and documentary records related to the city, this study classified the building types in the Jonggak area. As a result, since the 19th century, the basic form of Sijeon with 2 Gan(間, bay) in the front facade and 3 Gan(間) on the side, in other words, 5M in the front and 8M in the side was arranged in parallel, and it was a type with a corridor-type courtyard inside. The inner sides of Jongno Avenue had an atypical flat shape that suited the more free lot, and a courtyard-type plan with a single entrance was also confirmed in the one or two Bang(房, district). This study reflected the operation method of the Sijeon buildings b between the one unit and the other units, which affected the internal spatial structures, and it found that the size and style of the Sijeon buildings were closely relevant to the size of the lots near Jongno Avenue.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제28권1호
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• pp.41-51
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• 2022

Purpose: The purpose of this study is to compare variant analysis results regarding overcrowded spaces and suggest a space analysis model for women's hospitals at the outpatient clinic department, central treatment department, and inpatient ward considering evacuation capability of newborns unable to perform automotive evacuation, pregnant patients and maternal patients with limited mobility. Methods: Firstly, precedent studies on women's hospitals and evacuation in hospitals were reviewed. Secondly, the analysis conditions and necessary set values for simulation were designed after analyzing the design documents of the research target hospital. Thirdly, evacuation simulation was conducted by adjusting the variables related to the evacuation behavior of inpatients and newborns. Fourthly, based on the derived results, overcrowded spaces were compared and analyzed according to evacuation behavior. Result: The study results are as follows: (1) It is necessary to check the main escape routes for occupants and to expand and adjust the size of mainly used entrances. (2) It is necessary to widen the stairs' width to alleviate overcrowding caused by patients with non-autonomous walking. (3) Due to overcrowding of the main escape route, it is necessary to identify the bypass route and adjust the width of the corridor. (4) It is necessary to plan an evacuation route for newborns to escape from the main escape route for occupants. Implications: The study result is expected to be used as primary data for research that considers the evacuation behavior of newborns and pregnant women in women's hospitals.

• 분석과 대안
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• 제2권2호
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• pp.93-110
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• 2018

Due to its speciality, Johannesburg has drawn wide attention from the international academia, which the existing urban theory cannot easily explain. This paper focuses on the spatial pattern of Johannesburg, and finds that it is highly fragmented: first North-South Division due to apartheid and gold mining, secondly, the continuous sprawl due to population densification, and thirdly formation of city-region due to the fill-in spatial policy. The fragmented spatial pattern undermines the social integration and weakens the potential economic sustainability, which make the balanced multi-core spatial pattern inevitable under the influence of the international planning thought. The Johannesburg's spatial transformation comes not only from social integration, but also from the development vison of world-class status of an African city. In reality, since the collapse of apartheid, the municipal government has released series of strategic planning in different executive phase. These different plannings unanimously focus on the world class status although since 2008, the social inclusiveness is more emphasized. Thus, Johannesburg implements some spatial policies, as promoting the corridor of freedom, identifying the key nodes in the city then developing with high density, implementing the in-filling policy, managing the urban growth boundary, effectively preserving the natural system. However, the industrial structure in Johannesburg is already quite high-ended which cannot produce many jobs and also require much investment in advanced infrastructure. Thus, the strategic goals of world-class status of an African city and social inclusiveness which really need widely shared public services to some extent are in tension. After evaluation, we can see that spatial transformation is quite limited. Obviously spatial transformation largely depends on the social-economy. The population is still in flow. In this sense Johannesburg must energetically support the employment-based industry, effectively control the spatial sprawl and carry out institutional innovation which further incentive investment, gradually build an integrated regional governance. In general, how Johannesburg combines globalization and its own condition is still worth thinking in both theory and practice.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권5호
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• pp.1339-1355
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• 2023

Localization is a hot research spot for many areas, especially in the mobile robot field. Due to the weak signal of the global positioning system (GPS), the alternative schemes in an indoor environment include wireless signal transmitting and receiving solutions, laser rangefinder to build a map followed by a re-localization stage and visual positioning methods, etc. Among all wireless signal positioning techniques, Wi-Fi is the most common one. Wi-Fi access points are installed in most indoor areas of human activities, and smart devices equipped with Wi-Fi modules can be seen everywhere. However, the localization of a mobile robot using a Wi-Fi scheme usually lacks orientation information. Besides, the distance error is large because of indoor signal interference. Another research direction that mainly refers to laser sensors is to actively detect the environment and achieve positioning. An occupancy grid map is built by using the simultaneous localization and mapping (SLAM) method when the mobile robot enters the indoor environment for the first time. When the robot enters the environment again, it can localize itself according to the known map. Nevertheless, this scheme only works effectively based on the prerequisite that those areas have salient geometrical features. If the areas have similar scanning structures, such as a long corridor or similar rooms, the traditional methods always fail. To address the weakness of the above two methods, this work proposes a coarse-to-fine paradigm and an improved localization algorithm that utilizes Wi-Fi to assist the robot localization in a geometrically similar environment. Firstly, a grid map is built by using laser SLAM. Secondly, a fingerprint database is built in the offline phase. Then, the RSSI values are achieved in the localization stage to get a coarse localization. Finally, an improved particle filter method based on the Wi-Fi signal values is proposed to realize a fine localization. Experimental results show that our approach is effective and robust for both global localization and the kidnapped robot problem. The localization success rate reaches 97.33%, while the traditional method always fails.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2020년도 학술발표회
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• pp.159-159
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• 2020

하천환경조사는 하천의 전반적인 특성을 조사 분석하는 것으로 하천환경 조사결과는 하천관련사업의 기초자료로 사용된다. 하천환경조사의 기초조사에서는 현장답사를 통해 하천의 특성을 대략적으로 판단하고 하천 전구간의 물리적 구조와 식생의 분포, 중요 서식처 정보를 포함하는 RCS 지도(River Corridor Survey)를 작성한다. 기초조사를 위해서는 하천 전 구간에 대한 현장답사가 필요하기 때문에 많은 시간, 비용 그리고 인력이 필요하고, 육안 또는 사진을 통한 스케치로 이루어져 조사 결과가 정성적이고 작업자의 경험이나 능력에 따라 결과가 좌우된다는 한계가 있다. 따라서 하천환경조사를 좀 더 간편하고 과학적이며 경제적으로 조사하기 위해 최근 드론 영상을 이용한 조사 기술 개발에 대한 연구들이 증가하고 있다. 하지만 드론을 이용한 하천환경조사의 대부분은 RGB 영상을 이용하기 때문에 정밀한 하천환경 변화를 정량적으로 분석하는데 한계가 있다. 이를 극복하기 위한 대안으로 사람이 감지할 수 있는 빛의 영역 뿐 아니라 자외선과 적외선 영역의 분광특성을 이용하여 하천환경의 특성을 세밀하게 분류하는 것이 가능한 초분광센서를 드론에 탑재하여 하천환경을 조사하기 위한 기초 연구들이 시작되고 있다. 본 연구에서는 line scan 방식의 초분광센서를 드론에 탑재하여 초분광영상을 촬영하기 위한 드론 시스템을 구성하였고, 하나의 사진과 같이 초분광영상을 제작하기 위해 다양한 기하보정 기술을 적용하여 최적의 기하보정 방법을 제시하였다. 이를 위해 초분광영상의 기하보정은 각각의 초분광영상의 GCP와 대응점을 이용한 2차원 변환 방법 및 비선형 변환 방법을 적용하여 보정을 수행하였으며, 각 방법에 따른 정사보정 영상의 위치정확도를 검증하였다. 연구 결과 드론 기반의 초분광영상 촬영 및 기하 보정 방법을 제시하였다. 향후 하천환경조사 뿐만 아니라 다양한 분야의 원격탐사에 초분광영상을 활용하는데 도움이 될 것으로 기대한다.

• 문화기술의 융합
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• 제9권3호
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• pp.701-706
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• 2023

우리나라 정부와 산업계는 도심항공교통(UAM) 서비스 상용화를 위한 로드맵을 제시하고 본격적으로 추진하고 있다. 본격적인 UAM 서비스의 도입을 위해서는 우수한 성능의 기체개발, 네트워크 거점과 회랑(corridor) 설계, 운영관리 최적화, 관련 법과 제도의 정비 등 해결해야 할 다양한 이슈를 가지고 있다. 본 연구에서는 운영관리 최적화 측면에서 우리나라를 중심으로 분야별 연구 동향을 살펴보고 추후 해결해야 할 연구 주제를 정리하여 제시하고자 한다. 국내 연구자는 UAM 서비스 이용요금, 이용 의도와 수용 모델, 버티포트 위치선정을 중심으로 연구가 진행되고 있으나 향후에는 서비스 주문 수락(order acceptance), 항공기 재배치(repositioning), 배터리 충전과 유지보수(charging and maintenance) 스케쥴링 등의 운영 최적화 연구가 필요함을 제시하였다.

• 생태와환경
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• 제56권4호
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• pp.414-419
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• 2023

삼천포천은 제방을 따라 제내지에 인공구조물이 설치되어 있으며, 하상구조가 인간활동으로 교란되어 있다. 본 연구결과 부착조류와 저서성 무척추동물의 생물다양성이 여타 하천에 비해 낮은 것으로 나타났다. 따라서 생태하천 복원 시 제방의 제외지와 제내지를 동시에 친환경적으로 복원을 고려함으로써 생물다양성 증대를 도모하고 하상 복원 등을 통해 회유성 어류들이 하천생태계로 유입되어 생태계의 안정성 및 건강성을 회복해야 할 필요가 있다(Palmer et al., 2014). 이를 위해서는 생태하천 복원시 사용되는 재료는 무생물적 재료를 지양하고 과거부터 주로 서식하는 자생식물 등을 주재료로 사용하고 하도 구조는 하상의 현재 유로형상 (flow channel pattern)을 유지하도록 유도해야 한다. 유로 연장이 필요한 경우 직강화 등에 의해 축소되어서는 안되며 축소된 유로는 복원을 권장한다. 분절된 지류는 본류와 연결시키고 연력이 곤란한 웅덩이는 대상하천에 맞게 소택형 습지를 형성하도록 유도한다. 또한 생태통로(Eco-corridor) 확보 및 추이대 조성을 통해 생태환경 기능을 개선할 필요가 있으며 제내지의 폐천 부지는 하천구역으로 편입하여 생태습지 등으로 이용을 적극 고려해야 한다(Choi and Lee, 2019). 생태적 복원을 위해 주차장, 체육시설 및 공원 등은 배제해 자연성을 유지하되 주민의 활용도를 고려하는 것도 중요하다. 이를 통하여 삼천포천의 자연성 회복을 통한 생물다양성 증진 및 주민에게 다양한 문화 휴식 공간 제공 등의 생태계 서비스 능력을 향상을 기대한다(Bennett et al., 2009).