• Journal of the Korean Association of Geographic Information Studies
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• v.6 no.3
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• pp.11-20
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• 2003

Many-sided approach methods are being demanded to solve environmental problems in urban areas. One of these methods will be to manage forests scattered in urban areas efficiently. This paper is to grasp the change of land use and landscape indices in Mt. Ap, Daegu, and to analyze the change of landscape structure. Mt. Ap is near Daegu Metropolitan, so under unnatural interferences of human activity persistently. The results of above analysis run as follows: First, the north of the case area is connected to forest, and keeps stable equilibrium ecologically, while the other parts of it suffer from rural exodus and side effects of urbanization which has been completed since 1980. Second, according to the area-rate change of each landscape element, a cultivated areas has been converted into urban one, especially Pinus densiflora forests and paddy fields into mixed forests and urban areas. Finally, most of plantations have been converted into deciduous forests and mixed forests in failure of adaption of plants in burned areas rather than owing to factitious interference.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.38-38
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• 2020

SPI지수는 강수량이 감소하기 시작하면 필요한 물수요에 비해서 상대적으로 물부족을 유발하게 되고, 가뭄발생의 발단이 된다는 것에 착안하여 개발된 지수이다. 하지만 다른 가뭄지수와 마찬가지로 강수량 또는 유출량 시계열을 상대적인 표준정규분포로 산정하였기 때문에 인근 지역에 비해 상대적으로 강수량이 많은 지역도 실제로 발생하지 않은 가뭄이 발생한다고 분석이 된다. 이러한 현상을 완화시키기 위해 수정된 가뭄분석 기법이 요구된다. 이에 Jeung et. al(2019)은 이런 현상을 완화시키기 위해 SPI지수 계산과정에서 해당지점의 시계열을 대상으로 계산되는 Gamma 분포를 전국으로 확장 시켜 산정 후 표준정규분포에 적용하여 가뭄지수를 산정하였다. 또한 과거 제한급수가 발생했던 지역을 대상으로 극한가뭄과 가뭄지속기간을 이용하여 M-SPI지수의 효용성을 확인한 결과, 제한급수 실시년도와 SPI, M-SPI 결과와의 비교결과 과거 가뭄을 정확하게 모사하는 것을 확인하였다. 하지만 M-SPI는 전국을 하나의 지역으로 가정하여 산정하였고, 증발산량과, 고도 등 지형의 특성을 고려하지 않았기 때문에 일부의 가뭄사상을 재현하지 못하였다. 이에 본 연구에서는 기상학적 인자와, 지형학적 인자를 고려하여 지역화를 하고, 각 지역별로 대표 확률분포를 산정하여 가뭄지수를 산정하고자 한다. 또한 한국 기상청에서 제공하고 있는 국가 표준기후변화 시나리오를 수집하여 M-SPI에 적용하여 미래 극한 가뭄빈도의 변화를 전망하고자 한다.

• Journal of the Economic Geographical Society of Korea
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• v.14 no.2
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• pp.143-156
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• 2011

Recently, the environmental problems become a serious social issue, there are many efforts to manage it efficiently. As one of the ways to measure the environment in quantitative index, the environmental indicators are used in decision-making process. Air Environmental Index(AEI), which is derived from the U.S. Air Quality Index(AQI), illustrates the degree of air pollution. In study as follows: to find the charateristics of administrative dongs in Seoul, correlation analysis is conducted based on the land-use patterns and daily traffic data that represent AEI and urban spatial structure of Seoul.

• Journal of Environmental Policy
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• v.4 no.1
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• pp.113-127
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• 2005

This study was aimed at developing an application method of biotope evaluation indexes to secure bird diversity on urban biotope that has high intensity of land use. The main purpose of the study was to plan the effective restoration method of sound urban biotope from the ecological aspects after evaluating the relationship between the biotope evaluation indexes. The biotope area, number of insect species, distance from adjacent road, biotope area index were surveyed on each designated site in order to analyze the evaluation indexes that influenced bird diversity in urban biotope. The analysis of the relationship between biotope evaluation. indexes showed the following results number of bird species and number of insect species > number of bird species and biotope area index > number of insect species and biotope area index, that is, the number of insect species and biotope area index had a specific effect on the bird diversity. The equation derived from the above result is 'number of bird species = 6.124 $\times$ biotope area index + 0.095 $\times$ number. of insect species - 1.197' ($R^2=0.716$, F=27.743, P<0.001). Therefore, even a small area can be helpful for promoting bird diversity in the urban area if the biotope area index and diversity of vertical landscape for insects are maintained.

• Ecology and Resilient Infrastructure
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• v.3 no.2
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• pp.117-125
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• 2016

Current cities encounter various types of water problems due to rapid urbanization and climate change. The increasing significance of urban water problems calls for the establishment of resilient alternatives to prevent and minimize social loss that results from these phenomena. As a background research for establishing resilient infrastructures for the mitigation of urban water problems, we evaluated the robustness of structural alternatives for urban flood as a representative case. Combining the robustness index (RI) and the cost index (CI), we suggested the robustness-cost index (RCI) as an indicator of the robustness of structural alternatives, and applied the index to assess the existing infrastructures and structural alternatives (i.e., sewer network expansion, additional storage tank construction, and green roof construction) at a site prone to floods located around Gangnam-station, Seoul, Korea. At a rainfall intensity frequency range of 2 to 20 years, the usage of a storage tank and a green roof showed relatively high RCI value, with a variation of an alternative showing greater RCI between the two depending on the size of design rainfall. For a rainfall intensity frequency of 30 years, installing a storage tank with some green roofing was the most resilient alternative based on the RCI value. We proposed strategies for establishing resilient infrastructures for the mitigation of urban floods by evaluating the robustness of existing infrastructures and selecting optimal structural alternatives with the consideration of scales of design disaster.

• Journal of Environmental Impact Assessment
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• v.24 no.6
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• pp.593-606
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• 2015

This study was intended to develop Korean Environmental Sustainable City Index (ESCI) so that local governments can examine and identify urban environment issues and then come up with a policy to improve the environment and urban biodiversity for cities. Green City Index (GCI), Environmental Performance Index (EPI), and City Biodiversity Index (CBI) which have used worldwide were analyzed. Based on the result of analysis, evaluation indicators of ESCI were finally a total of 20 indicators under four categories, which are native biodiversity, living environment, ecosystem services, and governance and management. Then, five cities with biotope mapping and evaluation index were selected to apply ESCI for evaluation. In order to apply ESCI, local governments need to accumulate basic data. There should be a policy which requires local governments to build data for biotope mapping so that the rate of natural area, ecological network and permeable land surface can be evaluated. Indicators must be applied to be compliant with scale of the city and level of data building gradually.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.113-114
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• 2017

본 연구의 목적은 우리나라 16개 광역자치단체(시 도)별 문화시설중 도시공원에 대한 규모를 근린공원, 어린이 공원, 소공원, 묘지공원, 체육공원, 역사공원, 문화공원, 수변공원, 도시자연공원 등으로 구분하여 인구 및 기초지방자치단체 등의 규모와의 비교분석을 통해 지역의 문화시설지수를 도출하였다. 이를 통해 광역지방자치단체별로 도시공원의 유형과 면적이 인구증가율과는 다르게 나타난다는 점을 확인하였다. 인구증가에 비례하여 도시공원 면적 확보율이 비례하지 않는다는 점을 확인하였으며, 이는 향후 도시공원 정책 수립에 있어 인구증가율을 고려하여야 한다는 시사점을 도출하였다.

• Proceedings of the Korea Multimedia Society Conference
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• 2012.05a
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• pp.164-165
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• 2012

집중호우 및 홍수로 인해 침수지역이 발생할 경우 이를 예측하기 위해 IT를 융합한 방재에 대한 연구가 필요하며 특히 본 논문에서는 도시 침수에 대비하여 교통 통제, 우회 도로 등을 제공하기 위해 정량적인 침수 위험 지수를 접목시키는 방안에 대하여 연구하였다.

• Economic Analysis
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• v.17 no.1
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• pp.131-168
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• 2011

We estimate consumer price indexes of eight major cities from 1907 to 1939, and then integrate them into a national level one. The data mainly came from the Statistical Yearbooks of the Government-General of Colonial Korea, and if necessary, we supplement them using wages and unit prices of public utility charges which are used as the price of housing and various services. We apply Laspeyres index method, and the composition ratios of consumption expenditure estimated by the commodity flow method are used as weights. The price indexes of 12 item groups as well as aggregate one are also calculated. In case of Seoul, it is possible to calculate the consumer price index from 1907 to 2009, showing a century-long pattern. This consumer price index is critical for measuring the real income and expenditure before the liberation.

• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2015.11a
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• pp.97-98
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• 2015