• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.278-278
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• 2011

최근 우리나라는 기후변화 등으로 국지성호우가 발생하여 수공구조물의 피해 규모가 점점 커지고 있는 실정이다. 따라서 본 연구에서는 서울지점의 시자료를 이용하여 비정상성 강우빈도해석을 함으로써 기후변화를 고려한 확률강우량을 산정하였으며, 여러 시간분포방법을 비교, 분석하여 우이천유역과 같은 도시 하천의 강우분포 및 지형특성에 알맞은 강우의 시간분포 방법을 선정하고자 하였으며, 도시유출모형인 SWMM을 이용하여 비시나리오기반 기후변화에 따른 향후(2020~2030년) 재현기간 50년 빈도의 첨두유출량을 예측하였다. 분석결과 2020년의 경우 지속시간 1시간의 경우 Yen-Chow방법이 393.02CMS로 가장 높은 첨두 유출량을 보였으며, 지속시간 2시간, 3시간의 경우 Mononobe방법이 439.8149CMS, 503.5989CMS로 가장 높은 첨두 유출량을 나타내었다. 또한 2030년의 경우 지속시간 1시간의 경우 Yen-Chow방법이 416.75CMS로 가장 높았으며, 지속시간 2시간, 3시간의 경우 Mononobe방법이 470.13CMS, 533.7CMS로 가장 높은 첨두 유출량을 나타내었다.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.7
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• pp.229-239
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• 2020

This article aims to measure the impact of economic growth and urbanization on poverty reduction in Vietnam, and verify whether economic growth and urbanization will help reduce poverty rates. Data for this study are tabular data related to growth, urbanization and poverty at the provincial level for the period of nine years, from 2006 to 2014 provided by the Vietnam General Statistics Office and the Vietnam General Department of Customs. The level of economic growth and urbanization mentioned in the study is reflected in such indicators as GDP value, exports value, imports value, urbanization rate and employment rate. The authors used logistic regression models with fixed-effects and logistic regression models with random effects. With 5% confidence level tested by the Chi-Square test of Hausman trial with the fixed-effect model, research results show that: (1) factors with significant negative impact on the poverty rate include imports value, urbanization rate and, employment rate; (2) factors that do not affect the poverty rate include exports value and GDP value. Based on the research results, this study proposes a number of policy recommendations to help promote economic growth, to sustain the urbanization process, and to contribute directly and positively to poverty reduction in Vietnam.

• Environmental Engineering Research
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• v.18 no.2
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• pp.57-63
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• 2013

Arid areas have a significant problem with water supply due to climate change and high water demand. More than 3,000 years ago, Persians started constructing elaborate tunnel systems called Qanat for extracting groundwater for agriculture and domestic usages in arid and semi-arid areas and dry deserts. In this paper, it has been demonstrated that ancient methods of water management, such as the Qanat system, could provide a good example of human wisdom to battle with water scarcity in a sustainable manner. The purpose of this paper is twofold: Review of old wisdom of Qanat-to review the history of this ancient wisdom from the beginning until now and study the Qanat condition at the present time and to explore why (notwithstanding that there are significant advantages to the Qanat system), it will no longer be used; and suggestions for future water management-to suggest a number of new methods based on new materials and technology to refine and protect Qanats. With these new suggestions it could be possible to refine and reclaim this method of extracting water in arid areas. Also, a new multi-purpose water management model has been introduced based on rainwater infiltration management over the Qanat system as the model can be applied either in dry or wet cities to solve current urban water problems.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.21 no.3
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• pp.67-81
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• 2018

We tried to analyze qualitatively a total of 110 the research papers which were related domestic ecological restoration technologies about 15 years through semantic network analysis in social network analysis. In order to understand the research trends of ecological restoration technologies, we analyzed the degree centrality and betweenness centrality of the Stream/Wetland, Slope, Soil/Others fields selected as Word Cloud. As a result, ecological restoration technologies have been changed. They were focused on the restoration of species or their habitats in the past. However, they have been evolved into the detailed systems to respond in unpredictable natural disasters and climate change, high-resolution image implementation technology to accurately grasp the practical environment and methods related to environmental restoration for human in urban ecosystem. In the future, investment and technology for the ecosystem restoration field will be continuously demanded for the symbiosis of human beings and species in the damaged ecosystem. Therefore, the research trend of ecological restoration technologies should be provided as reliable guidelines when decision makers establish the policy direction or when researchers select their subjects.

• Journal of the Korean Solar Energy Society
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• v.34 no.6
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• pp.27-37
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• 2014

Heat island is caused by changes of land coverage structure of cities and use of energy in buildings. As a result energy use in buildings get to increase further followed by rising of GHG emission and deteriorating climate change. Eco-friendly housing complex is a kind of plan that applies environmental control elements like water and green spaces to housing complex. With these methods, it can be expected to create thermal environment of indoor and outdoor. In this paper quantitative examination is studied on using CFD to find out the effects of river, water permeable, parks and planting on thermal environment. And by comparing field measurements with CFD results which are aimed to development phase housing complex, feasibility and usability of the CFD analysis results are confirmed. And also, analysis on the ventilation performance followed by natural ventilation system is analyzed by selecting one building in housing complex. Based on the results, the possibilities of energy reduction through making thermal environment and applying natural ventilation are studied. With these outcomes, creating thermal conditions and using natural ventilation would be contributed to GHG reduction.

• Proceedings of the Korea Water Resources Association Conference
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• 2010.05a
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• pp.1169-1173
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• 2010

기후변화의 영향은 전세계적으로 재해를 가중시키는 역할을 하고 있다. 특히 인구밀도와 자산가치가 높은 도시지역의 홍수피해가 급증함에 따라 이를 방지하기 위한 대책마련이 시급히 요구되고 있다. 본 연구에서는 미래의 기후변화에 대응하기 위한 방안으로 도심지역에 LID(Low Impact Development)기법을 적용하여 도시 홍수의 저감방안으로서 그 적용성을 평가하고자 하였다. 이를 위해, 굴포천 유역을 대상으로 XP-SWMM을 이용하여 관망을 구축하고 현재 강우자료(1961~2000년)와 미래의 강우자료(KMA-A2 기후변화 시나리오, 2001~2090년)를 적용하여 현재와 미래의 강우조건에 따른 도심지역의 홍수범람 및 유출량을 산정하였다. 이 결과를 바탕으로 모델링된 지역 중, 기후변화 전후의 상습 홍수범람지역을 우선적으로 선정하여 LID기법을 적용하였다. 효율적인 LID기법의 적용을 위해 토지이용 변화에 따른 시나리오를 작성하고, 이에 따른 유출곡선지수(Curve Number, CN)값을 산정하여 도시홍수 범람지역 및 유출량의 변화를 검토하는데 이용하였다. 분석 결과, LID기법을 적용하였을 경우 기후변화에 따른 도심지역의 홍수 및 유출량을 현재 수준으로 낮출 수 있다는 결과를 얻을 수 있었다. 본 연구를 통하여 개발이 완료된 도시지역에도 효율적인 LID기법의 적용에 따라 도시홍수 및 유출량을 효과적으로 저감할 수 있을 뿐만 아니라, 기후변화에 대응하기 위한 하나의 대응책으로써 충분한 역할을 할 수 있을 것이라고 판단된다.

• Korean Institute of Interior Design Journal
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• v.18 no.6
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• pp.158-165
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• 2009

Ever since the industrial revolution, large cities have become a field of new lifestyle and urbanization, causing climate change and environmental pollution. As a result, countermeasures for revolving these problems is needed. In addition, large cities in the information age have become a space where each nation executes its public policy to express the competitiveness of each city. In this study, countermeasures for the environmental crises caused by urbanization as well as the sustainable spatial designs for the cities are investigated as a new source of urban competitiveness, and the environmental aesthetics for designing public space is considered. The purpose of this study is to suggest a direction for sustainable designs and planning that is applicable to public space. According to the definition of sustainability, the items of the spatial implementation of ecological, economical and social sustainability are categorized. Based on this categorization, the sustainable designs of public space are classified into five types, and a comprehensive analysis of good public spaces from previous literature is conducted. The concepts of design and three elements--public space, sustainability, and their instrumental meanings, are integrated in this study. The significance of this study lies in the actual application of the classification to the planning and design of sustainable public space in cities, rather than being a conceptual classification.

• Proceedings of the KSRS Conference
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• 2003.11a
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• pp.319-321
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• 2003

It is our goal to obtain a better scientific understanding of how to define the nature and role of remotely sensed land surface parameters and energy fluxes in the heat island phenomena, and local and regional weather and climate. By using the TRMM (Tropical Rainfall Measuring Mission) visible and thermal imagery data and analyzing the surface energy flux images associated with the change of the landcover and land use in the study area, we present how significant is the magnitude of the heat island heat effect and its relation with the surface parameters and the energy fluxes in the Taichung area of Taiwan. We used the energy budget components such as net radiation, soil heat flux, sensible heat flux, and latent heat flux in the study area of interest derived form remotely sensed data to understand the island heat effect in Taichung. The results show that water is the most important component to decrease the temperature, and the more the consumed net radiation to latent heat, the lower the urban surface temperature.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.249-249
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• 2012

기후변화의 영향으로 폭우발생 빈도 및 강도는 최근 들어 급증하고 있다. 빈번히 발생하는 대형 폭우에 의해 도시는 홍수와 산사태 등 많은 자연재해가 발생하고 있다. 최근 도시에서 발생한 대형 폭우재해의 1차적인 원인은 도시방재시설물 설계빈도를 상회하는 집중호우이지만, 방재를 고려하지 않은 도시계획 및 설계가 피해를 가중시킨 것으로 판단되고 있다. 대형화 및 일상화되어가는 폭우재해에 적응하기 위해서는 하수관거, 제방 등 전통적인 방재시설물 설계기준을 상향조정하는 구조물적 대책뿐만 아니라, 도시의 토지이용, 공원, 녹지, 광장, 도로 등의 구성요소를 활용하여 우수유출 저감 및 지연시켜 최대홍수량을 낮추는 비구조물적 적응방안도 필요하다. 기후변화에 따른 폭우재해에 도시차원에서 효과적으로 적응하기 위해서는, 다양한 폭우재해 적응 도시계획 및 설계기법을 개발하고, 그 효과를 시뮬레이션 할 수 있는 시스템 개발이 필요하다. 본 연구에서는 기존에 개발된 홍수 및 산사태 관련 시스템들과 연계하고 정부의 다양한 부처에서 구축된 DB를 최대한 활용하여 폭우에 의해 발생하는 도시 홍수와 산사태 피해지점과 피해 영향권을 분석뿐만 아니라 폭우재해 적응 도시계획 및 설계기법을 효율적으로 적용할 수 있는 관리지역을 도출하고, 관리지역에 폭우재해 적응 도시계획 및 설계기법 적용시 효과를 분석할 수 있는 기후변화 폭우재해 적응 도시조성 시뮬레이션 시스템 개발방향을 제시한다.

• Entomological Research
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• v.48 no.6
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• pp.540-549
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• 2018

Climate change due to global warming and changes in land use increase the development time and distribution, as well as the abundance, of mosquitoes, thereby negatively affecting human life and health. In this study, we investigated the habitat characteristics of mosquito occurrence sites in Danwon-gu, Ansan city, Korea, based on a daily record of civil pest complaints lodged at the Danwon-gu Community Health Center. We considered two types of factors (natural and artificial) known to affect mosquito occurrence. We confirmed a total of 554 cases of mosquito occurrence from March 2014 to August 2017. The total study area was $49.11km^2$, with urban areas constituting the largest proportion. Additionally, we investigated habitat preferences of mosquitoes in terms of terrain factors; generally, mosquitoes occurred at low elevations and on low slopes. Regarding the preference of oviposition sites, mosquitoes occurred at higher rates near streams and crops lands. The rate of mosquito occurrence tended to increase in areas with dense human populations. Regarding climatic factors, the rate of mosquito occurrence increased in areas with high temperature and low precipitation.