• KIEAE Journal
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• v.1 no.2
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• pp.55-62
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• 2001

This is a study on how to create an ecological arboretum that would promote biodiversity by creating wild animal habitats in terms of using large-scale remnants in urban areas and that would serve as a field for environment education based on its locational feature of being an urban area and its accessibility. This study is significant in a sense that this is the first arboretum to be created in urban area. However, it has a couple of limitations and they are as follows. First, since an arboretum creation plan is a mid/long-term plan, it is difficult to verify the biodiversity promotion effect of the application of habitats and creation techniques. Second, as the space was created by considering ecological features and utilizing natural prototype, the diversity of forest trees in here is lower than that of a traditional arboretum.

• The Journal of Korea Robotics Society
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• v.12 no.3
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• pp.249-257
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• 2017

This paper proposes a method to segment urban scenes semantically based on location prior information. Since major scene elements in urban environments such as roads, buildings, and vehicles are often located at specific locations, using the location prior information of these elements can improve the segmentation performance. The location priors are defined in special 2D coordinates, referred to as road-normal coordinates, which are perpendicular to the orientation of the road. With the help of depth information to each element, all the possible pixels in the image are projected into these coordinates and the learned prior information is applied to those pixels. The proposed location prior can be modeled by defining a unary potential of a conditional random field (CRF) as a sum of two sub-potentials: an appearance feature-based potential and a location potential. The proposed method was validated using publicly available KITTI dataset, which has urban images and corresponding 3D depth measurements.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.12 no.5
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• pp.101-109
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• 2009

There are increasing needs about creation and sustainable management of urban forest for environmental conservation and recreational service for citizen. However, it is difficult for local governments to create or manage urban forest in recreational or conservational way. The purpose of this study is to classify the urban forest types by considering its geographical feature, biological and sociological characteristics in order to suggest a guide to local governments about effective creation or management of urban forest. In this study, we extracted common characteristics of the selected five indicators. Factors about urban forest are divided into two groups. Factors were named according to the variables as 'Urban Forest Naturalness', and 'High Accessibility and Disturbed by Human.' In addition, we classified urban forests into four types in this study. The type I of urban forest is a large forest and has high naturalness such as Mt. Bukhan and Mt. Gwanak. The type II is fragmented to large forests by developmental projects. The type III is flat and has high accessibility such as forest behind Seonjeongneung. The type IV is located near residential area such as Mt. Ansan, Mt. Inwang and Mt. Bonghwa. It is possible to set up recreational area for citizens and ecological networks for species by the research of the urban forest type. The results of the study, classification of urban forest types and its application, contribute to provide a guide for local governments to create or manage urban forests effectively.

• Journal of the Korean association of regional geographers
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• v.22 no.2
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• pp.424-438
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• 2016

In an effort to prevent urban decline and hollowing-out phenomenon and to vitalize stagnant local economy, a new urban regeneration paradigm is on the rise. This study aims to analyze urban decline characteristics using the spatial statistical method and GIS on the basis of decline standards in the Urban Regeneration Special Act, and spatial autocorrelation technique. The Gwangju Metropolitan City was set as a research target, and the decline standards in the Urban Regeneration Special Act - population reduction, business declines, and outworn buildings - were applied as the indicator to secure the objectivity. In particular, this study has a distinctive feature from the other existing ones, as applying GIS and the spatial statistical technique, in a sense to make urban decline characteristics analysis by the spatial autocorrelation technique. The overall analysis procedure was carried out by applying the standards of designating urban regeneration regions, and following the spatial exploratory procedure step by step. Therefore, the spatial statistical method procedure and the urban decline characteristics analysis data being presented in this study, as the results, are expected to contribute to the urban decline diagnosis at the level of metropolitan city, as well as to provide useful information for spatial decision making in accordance with urban regeneration.

• Journal of architectural history
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• v.23 no.2
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• pp.65-80
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• 2014

This study was aimed at analyzing the location and the characteristics of the Urban hanok tissues that were formed in the downtown since 1920s. Focusing on the relationship between roads and lots, the developing process and the typological characteristics are examined. Through dividing the large and medium lots of the aristocratic families and on the hilly area near the Seoul City Wall, various shapes of urban hanok tissue were evolved. The urban hanok tissues developed before 1936 locate on the downtown sites, while those developed after 1936 locate on the hilly sites. The location of the tissues were identified in the upper area of Jong-no street. The former is composed of small size lots divided into average area $104.4m^2$ with the narrow alleys of about 2.0m width, while the latter is composed of medium size lots divided into average area $131.54m^2$ with the alleys of about 4.0m width. Moreover the structures of the tissues were evolved based on the developing period and the site condition. Moreover the structures of the tissues were evolved based on the developing period and the site condition. The typological characteristics were defined as the four patterns categorized with the bilateral concepts of alley's form and of alley's spacial feature.

• Journal of the Korean Institute of Rural Architecture
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• v.14 no.4
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• pp.55-65
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• 2012

Urban traditional housing is a type of the urban housing which have developed by itself from the traditional vernacular houses and it has continued with a traditional feature in the westernization and modernization affection of Korea. Also, the urban traditional housing is still one of the housing in the present and it makes a urban village with a rich culture benefit and fresh natural environment. The purpose of this study is to analyze the periodical characteristics of urban traditional house in korea's provincial town Gyeongju. The local range is Hwang-Nam Hanok Conservation Area in Gyeongju and the period range is 1874~2000s. So the first period from 1874 to 1909, the second period is 1910 to 1945, the third period is 1946 to 1969, the fourth period is 1970s, and the fifth period is since the 1980s. This classification will be considered of the social phenomenon at the time. The total number of target houses are 8 houses. They were analyzed by layout, floor plan, and elevation characteristics of urban traditional house. For structure of this study, Chapter 1, establishes the goal and range of study. Chapter 2, 3, examines distinctions of urban traditional house with traditional house, and meaning of urban traditional house, and transition of urban traditional house. Chapter 4, establishes formality to analysis, and performed from plan to elevation analysis, observation survey, and interview through door-to-door survey, and clarifies trend and characteristic of urban traditional house's change by integrating the results, and Chapter 5, is results integrating the above studies.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.5 no.6
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• pp.14-23
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• 2002

Daejeon is a large city in Korea and very high-speedly developing city. Recently urban area is expanding and large forest patch is fragmenting into small habitats because of urban sprawl. The fragmentation of large forest patch decreases the size of habitats and increases the loss of biodiversity in urban area. This study is to analysis the connectivity of green space of Daejeon metropolitan city, and suggest the optimum location of greening site and corridor in order to increase the connectivity of green space of Daejeon metropolitan city. The findings of this study are as follows; (1) The result of this study showed that ${\alpha}$ and ${\gamma}$ index are -0.24 and 0.20. A ${\alpha}$ index is very low and a ${\gamma}$ index is relatively low. (2) The dispersion was very high, for urban forest patches were isolated through fragmentation. Therefore, it needed ecological corridors in order to connect the patches. (3) A urban streams were very important in connectivity of urban green space. Urban riparian corridor must be preserved and restored. (4) A urban green space policy and planning must be prepared to increase the connectivity and assessment of alternatives must be accomplished from perspective of connectivity. The results of this study show the practical implications in perspective of green space planning and policy in Daejeon metropolitan city. The suggestions by findings of this study are to connect green space between large forest patch in urban fringe and island green space in inner city. Also, It is required that urban stream is restored to natural feature for use of corridor by wildlife.

• Journal of the Korean association of regional geographers
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• v.20 no.3
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• pp.269-281
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• 2014

Urban communities have been recently highlighted as an alternative idea in the field of urban regeneration, social economy and so on. Urban communities should not be understood as an ideal, but the way urban communities work in reality also should be analysed. This paper aims to find out what urban communities really mean and who are involved in urban communities. The paper explores the features and issues of unban communities by surveying residents in Ansim area, Dong-gu, Daegu city. The paper analyses the relation between participation and community features: residents' socio-economic features, residence features, social relationship with their neighbours and the sense of community. The survey outcome shows that middle income, higher educated residents living in apartment complex are relatively more involved in community activities. Moreover, those who have more relationship with their neighbours have participated in community activities more than those who do not have any. As a consequence, this paper carefully states that the urban community is middle class-oriented and such feature could cause other residents' limited opportunities to access information about their own community and lead to social exclusion. This paper suggests that urban community groups need 'soft solidarity' between social classes.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.1D
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• pp.111-120
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• 2009

Restructuring urban land use patterns from the motor-oriented to transit-oriented ones is a contemporary trend in urban planning and transportation. It is expected that transforming urban land use patterns to be transit and walking friendly would resolve various urban problems such as heavy energy consumptions, air pollutions, and traffic congestions. Korean cities have much potentials for developing transit-oriented urban environments in terms of its density and civil service levels, but the level of transit usage levels and the environmental quality of cities are not good enough for supporting such transition. The purpose of this study is to analyze the urban transit center areas and identify the problems to be solved to create transit-oriented urban environments. Case studies of four urban transit center areas in Seoul Metropolitan region were conducted to examine the spatial characteristics of urban transit center areas and identify their problems. Development density, land use diversity, walk-ability and transit connectivity were the primary feature of interests.

• Journal of Cadastre & Land InformatiX
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• v.53 no.1
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• pp.47-63
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• 2023

The Seoul Metropolitan Government is building and operating digital twin-based urban spatial information to solve various problems in the city and provide public services. Two essential factors to ensure the stable utilization of spatial information for the implementation of such a digital twin city are the latest and quality of the data. However, it is time-consuming and costly to maintain continuous updating of high-quality urban spatial information. To overcome this problem, we studied efficient urban spatial information construction technology and the operation, management, and update procedures of construction data. First, we demonstrated and applied automatic 3D building construction technology centered on point clouds using the latest hybrid sensors, confirmed that it is possible to automatically construct high-quality building models using high-density airborne lidar results, and established an efficient data management plan. By applying differentiated production methods by region, supporting detection of urban change areas through Seoul spatial feature identifiers, and producing international standard data by level, we strengthened the utilization of urban spatial information. We believe that this study can serve as a good precedent for local governments and related organizations that are considering activating urban spatial information based on digital twins, and we expect that discussions on the construction and management of spatial information as infrastructure information for city-level digital twin implementation will continue.