• 한국화재소방학회논문지
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• 제4권1호
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• pp.13-19
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• 1990

Recently, the expansion of underground shopping street has a tendency to make a large maze in urban underground space. As the passers -by in underground streets have little information about these spaces, there can be a great danger at fire. From this point of view, this study aims at offering the basic data which needs to make a reasonable planning of escape facilities of underground shopping street. Therefore, safe performance evaluation program is developed for evaluating inhabitants' safety at each model. This program is composed of systematic equations which generalize each phenomenon at fire.

• Journal of Forest and Environmental Science
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• 제28권1호
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• pp.46-55
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• 2012

The research on urban forests in Chuncheon, so far, has mainly conducted in Ponguisan urban forest. Research on other urban forests in Chuncheon was scarce. Accordingly, in this study, the author chose the main urban forests in Chuncheon and tried to find a way of efficient establishment and management of urban forests in Chuncheon by field and questionnaire survey. The research findings, there were several reasons why effective management can not be implemented in the main urban forests in Chuncheon. To solve these problems and make an efficient establishment and management of urban forests in Chuncheon, the first way is to make forest management plans on the urban forest in Chuncheon and expand administrative organization, personnel and budget. Establishment and management of urban forests needs a practical, strengthened overall management system. The second way is to enhance the regional and functional characteristics for urban forest, expand the area of urban forests, and enhance management of Street trees. The third way is to designate Urban Nature Park or Urban Park for the main urban forests in Chuncheon and need to change the ownership of the urban forests by purchasing. The fourth way is to respond to Chuncheon citizen's preference and their way of utilization when create the urban forests in Chuncheon, expand convenience facilities, relaxation facilities as well.

• 한국조경학회지
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• 제52권4호
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• pp.45-55
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• 2024

본 연구는 보행 활동을 일상보행(utilitarian walking)과 여가보행(leisure walking)으로 구분하고, 보행 유형과 보행 환경 간의 상관관계를 분석하고자 한다. 연구 대상지는 서울특별시 용산구로, 보행환경 측정을 위해 구글 스트리트뷰(Google Street View: GSV)와 의미론적 분할(semantic segmentation) 딥러닝 기법을 활용하여 보행자가 실제로 체감하는 도시 보행환경 요소들을 정량적으로 산출하였다. 일상보행과 여가보행, 인지적 보행환경 만족도를 측정하기 위해 설문조사를 실시하여 192명의 유효 응답을 수집하였고, 설문 응답 데이터를 바탕으로 일상보행, 여가보행, 보행환경 만족도를 시각화하고, 보행친화도 값 간의 상관관계를 분석하였다. 연구 결과, 여가보행과 보행친화도는 유의미한 양의 상관관계를 보였으나(Pearson's r= 0.121, p-value= 0.012), 일상보행과 보행친화도 간에는 유의미한 상관관계가 없었다(Pearson's r= 0.093, p-value= 0.055). 이는 사람들이 일상보행에서는 보행환경보다 이동 효율성을 더 중요하게 고려하지만, 여가보행에서는 보행환경의 질을 고려하여 보행 빈도가 결정된다는 결과를 보여준다. 이러한 결과를 바탕으로 본 연구는 여가보행을 증진시키기 위해 주거지 주변의 보행환경을 개선하는 방안으로, 좁은 보행로에 수직 정원이나 다양한 형태의 입체적 정원을 조성하고, 보도 디자인을 개선하는 등의 구체적인 전략이 필요함을 제시한다. 본 연구 결과는 보행 친화적인 환경 조성을 통해 여가보행을 활성화하고, 궁극적으로 서울시의 지속 가능성과 주민들의 삶의 질을 향상시키는 데 기여할 수 있을 것이다.

• 국제초고층학회논문집
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• 제5권2호
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• pp.87-94
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• 2016

High-rise as a building typology is gaining popularity in Asian mega-cities, due to its advantages in increasing volumetric density with limited land resources. Numerous factors contribute to the formation of high-rise urban form, from economical and institutional, environmental to socio-political. Environmental concerns over the impact of rapid urbanization in developing economies demand new thought on the link between urban environment and urban form. Outdoor and indoor climate, pedestrian comfort, and building energy consumption are all related to and impacted by urban form and building morphology. There are many studies and practices on designing individual "green" high-rise buildings, but far fewer studies on designing high-rise building clusters from the perspective of environmental performance optimization.. This paper focuses on the environmental perspective, and its correlation with the evolution of the high-rise urban form. Previous studies on urban morphology in terms of environmental and energy performance are reviewed. Studies on "parameterizing" urban morphology to estimate its environmental performance are reviewed, and the possible urban design implications of the study are demonstrated in by the author, by way of a microclimate map of the iconic Shanghai Xiao Lujiazui CBD. The study formulates the best-practice design guidelines for creating walkable and comfortable outdoor space in a high-rise urban setting, including proper sizing of street blocks and building footprint, provision of shading, and facilitating urban ventilation.

• ETRI Journal
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• 제45권5호
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• pp.746-757
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• 2023

This study presents a novel safe landing algorithm for urban drone deliveries. The rapid advancement of drone technology has given rise to various delivery services for everyday necessities and emergency relief efforts. However, the reliability of drone delivery technology is still insufficient for application in urban environments. The proposed approach uses the "landing angle control" method to allow the drone to land vertically and a rapidly exploring random tree-based collision avoidance algorithm to generate safe and efficient vertical landing paths for drones while avoiding common urban obstacles like trees, street lights, utility poles, and wires; these methods allow for precise and reliable urban drone delivery. We verified the approach within a Gazebo simulation operated through ROS using a six-degree-of-freedom drone model and sensors with similar specifications to actual models. The performance of the algorithms was tested in various scenarios by comparing it with that of stateof-the-art 3D path planning algorithms.

• 한국환경과학회지
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• 제13권7호
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• pp.655-660
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• 2004

This paper demonstrates the numerical simulation of three dimensional flow pattern for vehicular exhaust dispersion in the street canyons. The wind flow around buildings in urban is computed by the SIMPLEST method. The convection-diffusion equation was used to compute the $NO_X$ concentration level near buildings. Details are given of important boundary conditions and turbulence quantities variations. The simple turbulence model was used for unisotropic viscous effect. A control-volume based finite-difference method with the upwind scheme is employed for discretization equation. The simple turbulence model applied in this study has been verified through comparison between predicted and measured data near buildings. By the predictive results, the updraft induced by the presence of high-rise buildings is important in the transport of street level pollutant out from the street canyons. Our suggestion for reducing ground level pollution is to have high-rise buildings constructed or to reduce the channelling effect of street canyons.

• 한국실내디자인학회논문집
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• 제22권5호
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• pp.68-77
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• 2013

'The Third space,' which is the concept that embraces sociological, spatial, and marketing concepts, refers to the place which is other than the home and the workplace and which is a comfortable frequented place where meditation, psychological relaxation, and social needs can be satisfied. 'The Third space' has the characteristics of comfort, openness, interactivity, playfulness, and diversity. In modern times, most of consumption spaces play the role of 'the Third space,' and the typical example is $Caf{\acute{e}}$. $Caf{\acute{e}}$ began from its origin with the characteristics of 'the Third space,' and recently it has become the complex cultural space of urban dwellers. $Caf{\acute{e}}$ as 'the Third space' has the characteristics of a healing space, communication space, personalized space, value-expressive space, culture and consumption space, nomad space. Such characteristics of $Caf{\acute{e}}$ are well represented in the cafes around the regions where 'street culture' has recently been formed. As examined through the examples, $Caf{\acute{e}}$ as 'the Third space' can be more strategically produced by establishing themes through storytelling, giving spatial identity through style creation, diversifying the sequence through complex space organization, and establishing interaction devices through experience elements.

• 토지주택연구
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• 제10권3호
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• pp.17-22
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• 2019

In recent years, crime has been steadily increasing, causing not only economic damage but also aggravating the social atmosphere. The CPTED(Crime Prevention Through Environmental Design) guideline, which is an environmental crime prevention design technique, reduces the possibility of crime by implementing a proper defensive design plan through appropriate lighting design in the city and reduces the fear of crime. Among the various principles of CPTED, the proper use of street lamps and CCTV is considered to be an important factor in enabling natural surveillance. In this study, the authors identified and quantified the current status of the installation of street lamps and CCTV in each autonomous district of Seoul. The physical quantity of lighting and social factor quantified from light lamps and CCTV data, respectively, were expected to support the guidelines presented by CPTED. Therefore, we conducted statistical analysis based on quantified values and found that street lamps and CCTV had a statistically significant relationship with crime rate. In addition, the correlation between the safety index and the crime rate, calculated by dividing the number of street lamps and CCTVs by area, was also analyzed and an R2 value of 0.647 was confirmed.

• 한국콘텐츠학회논문지
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• 제12권11호
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• pp.119-132
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• 2012

최근 우리나라 도시개발의 양적 확장은 도시의 환경이 제공해주는 공공성에 있어서 우리의 정체성을 잃어버리게 되는 결과를 가져다주었고, 획일화된 공공디자인의 환경적 메시지를 해결해야하는 새로운 과제를 가져다주었다. 도시의 공공환경은 지역의 첫인상을 좌우하는 중심축을 이루며, 그 지역의 전반적인 가치와도 연계되기 때문에 지역의 도시경관 디자인이 잘 형성되어 있느냐, 아니냐에 따라 지역의 가치는 매우 큰 차이를 보이게 된다. 따라서 도시의 스토리텔링을 기초로 도시브랜드화에 따른 지역문화 스토리텔링을 반영한 아이덴티티가 어떻게 활용되고 어떠한 부분에 적용되고 있는 것인가에 대한 객관적인 내용을 검증하기 위하여, 도시 공간 표현의 시각적 물리적 특성을 외부 공간의 특성과 연결시키는 방법의 개념을 잘 적용한 토쿄 마루노우치 거리와 파리 샹젤리제 거리의 도시경관 현황을 분석함으로써 우리의 창의적 도시경관에 대한 디자인 정체성이 무엇인지 재고하고자 하였다.

• 건축역사연구
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• 제21권6호
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• pp.63-76
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• 2012

Modern railway construction by Japanese had a great influence on the urbanization, transformation of urban structure and landscape during the Japanese imperialism and compressive increasing period in Iri(Iksan). This paper aims to find out the effect of railway on the modern urban structure and urban landscape in Iri(Iksan). Railways in Iri, Honam railway, Kunsan railway, Jeonla railway have been constructed progressively during 1911 and 1915 with Iri and old Iri(east-Iri) station. From the analysis of land registration maps and street plans, old photographies and historical records, some significant features underling railway construction can be followed in view of modern urbanization process in Iri. Firstly railways cut off the possibility of developing urban structure based on traditional spatial structure of Iksan. Secondly railways made dual spatial structure in Iri. Japanese and Korean life zone were divided into separate district around urbanization area and market place. Thirdly traditional space cognition system based on four cardinal directions were changed to front and rear space of railway station. Fourthly railways and stations caused neo-baroque spatial order and imperialistic urban landscape of Iri with axis, vista and gridiron plan. Fifthly break points and fringe belts garbling modern urbanization process are created. Sixthly modern cultural and consumptive urban spaces were taken their seats in relation with daily urban life.