• Journal of Korean Society of Transportation
• /
• v.12 no.4
• /
• pp.65-88
• /
• 1994

교통수요와 공급은 상호 밀접한 연관성을 지니고 있다. 교통수요는 교통시설 서비 스수준 및 교통시설의 이용가격에 영향을 미치는 반면에 교통시설 공급비용과 서비스수준은 교통수요에 영향을 준다. 또한, 교통수요와 공급간의 상호작용은 도시공간상에서 발생하기 때문에 교통시스템의 공간적 구조 및 도시의 공간적 특성은 공급, 가격 및 수요를 통합한 교통균형모형에 있어서 매우 중요한 영향인자로 작용하게 된다. 그러나, 이제까지 개발된 교통균형모형에서는 통행인의 통행시간가치 및 교통체증의 도시공간상 변화가능성을 적절하 게 반영하지 못하고 있다. 본 연구에서는 도시공간상에서 통행인의 통행시간가치 변화패턴 을 반영한 수 도시공간상에서의 교통시설의 최적 서비스 수준, 교통수단별 최적요금체계를 도출할 수 있었다. 단핵도시구조를 지닌 도시공간상에서의 최적버스요금은 통행거리에 따라 할증되는 체계를 가져야 한다. 선행연구에서는 승용차에 대한 통행혼잡세 부과는 소득역분 배적인 효과를 초래하는 것으로 알려졌다. 그러나 버스의 요금구조나 서비스 수준이 최적수 준에서 제공된다면 통행혼잡세는 소득역분배적 결과를 초래하지 않는 것으로 나타났다.

• Journal of Korean Society of Transportation
• /
• v.13 no.2
• /
• pp.19-42
• /
• 1995

1980년대 후기부터 교통정책의 우선 목표는 지역경제성장 자체가 교통문제를 스스로 해결할 수 있도록 하기 위하여 종래의 관리 중시의 정책은 다시 토지이용 정책으로 변화를 초래하엿다. 오늘날 대도시는 개개 졍제활동 주체들의 동적인 경제 행태에근거하여 분산구조를 띠고 있다. 이러한 동적인 경제행태에 미치는 요소들은 교통체계와 토지이용과 상호연관성의 연구에 필수적인 지가, 인구분포, 통행행태등이다. 그러나 전통적인 단핵도시 모형은 대도시의 분산구조형태의 동적인 과정을 설명하는데는 한계가 있다. 본 연구는 대도시의 변천과정을-도심 및 부심의 출현·소멸현상-설명함으로써 도시교통정책 필수적인 입지와 통행패턴에 대한 새로운 동태적 이론의 기초를 제공하는데 그 목적이 있다. 이를 위하여 지역경제 성장과 도시공간구조와의 동태적관계를 통합하는 토지이용과 교통의 연속 모형을 개발·응용하였다. 개발된 모형에서는 교통량에 따른 교통비용, 도시공간구조로 인한 외부효과들, 경제활동주체들의 비동질성, 이주비용, 그리고 집적 이익등이 매기마다 내생적으로 결정되어 대도시의 공간구조 변화를 설명한다. 경제 호라동주체들간의 ? 호물리적 교류는 소득 증대에 의하여 경제구조가 변함에 따라 새로이 결정된다. 가상적 도시와 자료를 가지고 실험한 결과 비동질적인 경제주체들의 불균형적 성장이 장기적으로 도시구조에 영향을 미치며, 기본적인 경제행위에 따라 장기동태적인 과정을 통하여나타나는 도시의 분산구조형태의 중요성을 보여주고 있다. 또한 교통비용의 변화에 따른 민감도분석을 통하여 모형의 실용성을 검정하였다.

• Land and Housing Review
• /
• v.12 no.4
• /
• pp.81-92
• /
• 2021

This study investigates whether urban expansion can act as a cause of the decline of the original city center through the Space Syntax methodology. The urban spatial structure analysis was conducted targeting the downtown area of Jeju-eupseong. The time points for longitudinal analysis were set at five points between 1914 and 2021 including the Japanese colonial period when the cadastral map was drawn up in Jeju City, and the urban spatial structure was analyzed and compared for each time point. ASA (Angular Segment Analysis) was used as a technique for urban spatial structure analysis. This study shows that urban expansion is a cause of the decline of the original downtown. The original city center has moved away from the center as the urban structural change due to the urban expansion. The urban structure of the eastern part of Jeju City has undergone a major transformation between 1914 and 2021. As the old Jeju area where the original city center was located is geographically in contact with the sea, urban sprawl has been made toward Halla Mountain and further to the south of Jeju. Accordingly, the city center has transformed from a monocentric to a polycentric structure. Due to the dynamics of the urban sprawl, the old downtown of Jeju became one of the peripheral neighbourhoods in the Greater Metropolitan of Jeju.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.24 no.2
• /
• pp.40-51
• /
• 2021

The purpose of this study is to diagnose urban spatial structures using spatial modeling techniques for balanced urban development as part of sustainable urban growth management. Since urban spatial structure is an interaction of various activities, it is necessary to interpret the analysis results in conjunction with the analysis of changes in spatial structural elements. In this study, population and transportation were approached for research purposes. Population data were applied to the Getis-Ord G_i^* method, a spatial statistical technique, to analyze the concentration-decreasing region of the population. Traffic data analyzed the trend of centrality change by applying commuting traffic O-D data to Social Network Analysis techniques. The analysis showed that urban imbalance was growing, and the centrality of transportation was changing. The results of the analysis of spatial structure elements could be interpreted by linking the results of each factor to each neighborhood unit, predicting changes in urban spatial structure and suggesting directions for sustainable urban growth management.These results could also be used as a decision-making tool for various urban growth management policies introduced to cope with rapid urban development and uncontrollable development in many cities around the world.

• Proceedings of the KAIS Fall Conference
• /
• 2011.05a
• /
• pp.404-407
• /
• 2011

도시공간은 도시민의 안정적인 경제/문화/기타 활동 유지를 위해 개발 및 관리되어진다. 최근 도시공간 내에 존재하는 다양한 형태의 구조물에 대한 안전에 많은 관심이 쏠리고 있는 상황에서 이러한 도시 구조물에 대한 신속 정확한 형태학적 특성 분석이 요구되고 있다. 그러나 이러한 도시 구조물에 대한 모니터링에 대한 관심에 못지 않게 주변의 다양한 식생이나 피복에 대한 분석에 대한 요구가 증가하고 있다. 따라서 이 연구에서는 도시공간내 존재하는 다양한 식생의 피복을 분석하기 위해 NIR 방사 자료를 활용하는 기초적 연구를 통해 근적외선 방사자료를 통한 피복분석을 효과적으로 실시하였다.

• Journal of Digital Contents Society
• /
• v.19 no.9
• /
• pp.1727-1737
• /
• 2018

In this paper, we propose a system to detect spatial structures in land cover maps and to detect time-series spatial structure changes. At first, the proposed system detects patches in a certain area at different times and calculates their measures to analyse spatial structure patterns of the area. Then the system conducts patch mapping among the detected time-series patches and decides 6 types of patch changes such as keeping, creating, disappearing, splitting, merging, and changing in a mixed way. Also, the system stores the patch-based spatial structure patterns of time-series land cover maps in binary form to extract changes. This demonstrated that the proposed change detection system can be used as a basis for planning the reconstruction of the urban spatial structure by measuring the degree of urban sprawl.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.17 no.2
• /
• pp.1-14
• /
• 2014

In this study, the change characteristics of urban spatial structure in Daegu were analyzed connecting with urban planning for efficient urban management. Urban development process from 1970 to 2010 in Daegu was analyzed utilizing Getis-Ord $G_i^*$ methodology, a spatial statistical method, and it was identified that Daegu was in the stage of disurbanization. However, as Daegu orients multi-nuclei city, it was difficult to explain the stage of urban development after disurbanization in 2000. Accordingly, to analyze detailed changes in spatial structure in multi-centric areas after 2000, population, land price and employment factor changes were analyzed using Bachi Measurement. According to analytical results, multi-centralization process has been continued in Daegu. Urban core area and Chilgok area showed spatial structure change into distribution process, Ansim area into concentration process, and Seongseo and Talseo area into concentration and distribution process. Therefore, urban planning considering the regional characteristics are needed for efficient urban management.

• Journal of the Economic Geographical Society of Korea
• /
• v.16 no.3
• /
• pp.445-457
• /
• 2013

This paper aims to investigate changes in the characteristics of urban spatial structure in Korea by regional groups and city size between 2000 and 2010. The characteristics of urban spatial structure is analyzed by Clark's population gradient curve in this paper. Therefore key parameters in population gradient function, such as population density gradients and population density in CBD represent the characteristics of urban spatial structure. The result shows that most of cities in Korea have experienced suburbanization rather than concentration, but small-size cities have experienced concentration during the period.

• Journal of the Korean association of regional geographers
• /
• v.18 no.4
• /
• pp.414-432
• /
• 2012

Land price is a kind of text to read urban spatial structure. The purpose of this paper is to inquire into the characteristics of Daegu's urban structure and its change in time through exploring spatio-temporal variations of land price with a detailed spatial and temporal resolution. To achieve this, land value surfaces were represented using the officially assessed land price every other year from 1995 to 2011. Through mapping and exploring spatio-temporal patterns and fluctuation rates of land price for this period, changes in urban structure, the effects of local decision makings such as Greenbelt adjustment, housing site development, and gentrification, and the effects of business fluctuations or policies at global or national scales could be caught. In addition, the trends for suburbanization and multi-centric urban form could be examined from the results of a negative exponential model explaining the effect of distance from an urban center on spatial variation of land price. These results demonstrate that urban analysis using land price mirroring spatial decision making at various scales could deepen understanding for internal structure and change of a city and provide useful information for establishing regional and urban development policies and evaluating their effects.

• Journal of the Korean Association of Geographic Information Studies
• /
• v.12 no.2
• /
• pp.44-51
• /
• 2009

The main purpose of this study is to identify urban spatial structure by applying geographic information system and remote sensing data. This study identifies the urban spatial structure of non-megalopolis by analyzing the spatial distribution of population and employment in the case of Daegu metropolitan area. For this purpose, multi-temporal satellite image data (Landsat TM; 1995, 2000 and 2005) were utilized through the geographic information system. The distance-decay estimations in terms of population and employment density show that Daegu region as a whole shows monocentric urban characteristics. However, some evidences of polycentricism such as low explanation power of monocentric urban model, rises in multiple employment centers, decentralization of employment are emerging.