• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2015년도 학술발표회
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• pp.220-220
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• 2015

Water, energy, and food security already became a risk that threatens people around the world. Increasing of resources demand, rapid urbanization, decreasing of natural resources and climate change are four major problems inducing resources' scarcity. Indeed, water, energy, and food are interconnected each other thus cannot be analyzed separately. That is, for simple example, energy needs water as source for hydropower plant, water needs energy for distribution, and food needs water and energy for production, which is defined as W-E-F nexus. Due to their complicated linkage, it needs a computer model to simulate and analyze the nexus. Development of a computer simulation model using system dynamics approach makes this linkage possible to be visualized and quantified. System dynamics can be defined as an approach to learn the feedback connections of all elements in a complex system, which mean, every element's interaction is simulated simultaneously. Present W-E-F nexus models do not calculate and simulate the element's interaction simultaneously. Existing models only calculate the amount of water and energy resources that needed to provide food, water, or energy without any interaction from the product to resources. The new proposed model tries to cope these lacks by adding the interactions, climate change effect, and government policy to optimize the best options to maintain the resources sustainability. On this first phase of development, the model is developed only to learn and analyze the interaction between elements based on scenario of fulfilling the increasing of resources demand, due to population growth. The model is developed using the Vensim, well-known system dynamics model software. The results are amount of total water, energy, and food demand and production for a certain time period and it is evaluated to determine the sustainability of resources.

• 한국컴퓨터정보학회논문지
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• 제24권8호
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• pp.19-28
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• 2019

In this paper, an online video summarization algorithm based on multiple object detection is proposed. As crime has been on the rise due to the recent rapid urbanization, the people's appetite for safety has been growing and the installation of surveillance cameras such as a closed-circuit television(CCTV) has been increasing in many cities. However, it takes a lot of time and labor to retrieve and analyze a huge amount of video data from numerous CCTVs. As a result, there is an increasing demand for intelligent video recognition systems that can automatically detect and summarize various events occurring on CCTVs. Video summarization is a method of generating synopsis video of a long time original video so that users can watch it in a short time. The proposed video summarization method can be divided into two stages. The object extraction step detects a specific object in the video and extracts a specific object desired by the user. The video summary step creates a final synopsis video based on the objects extracted in the previous object extraction step. While the existed methods do not consider the interaction between objects from the original video when generating the synopsis video, in the proposed method, new object clustering algorithm can effectively maintain interaction between objects in original video in synopsis video. This paper also proposed an online optimization method that can efficiently summarize the large number of objects appearing in long-time videos. Finally, Experimental results show that the performance of the proposed method is superior to that of the existing video synopsis algorithm.

• 한국물환경학회지
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• 제34권6호
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• pp.569-578
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• 2018

To minimize the negative alterations in hydrologic and water quality environment in urban areas due to urbanization, Low Impact Development (LID) techniques are actively applied. In Korea, LID facilities are classified as Non-point Pollution Reduction Facilities (NPRFs), and therefore they are evaluated using the performance evaluation method for NPRFs. However, while LID facilities are generally installed in small, distributed configuration and mainly work with the infiltration process, the existing NPRFs are installed on a large scale and mainly work with the reservoir process. Therefore, some limitations are expected in assessing both facilities using the same method as they differ in properties. To solve these problems, in this study, a new method for performance evaluation was proposed with focus on bio-retention LID facilities. EPA SWMM was used to reproduce the hydrologic and water quality phenomena in study area, and SWMM-LID module used to simulate TP interception performance by installing a bio-retention cell under various conditions through long-term simulations. Finally, an empirical formula for Load Capture Ratio (LCR) was derived based on storm water interception ratio in the same form as the existing method. Using the existing formula in estimating the LCR is likely to overestimate the performance of interception for non-point pollutants in the extremely low design capacity, and also underestimate it in the moderate and high design capacity.

• Journal of Korea Trade
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• 제25권2호
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• pp.95-110
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• 2021

Purpose - This paper intends to conduct theoretical analysis and empirical test on the action mechanism of South Korea-China trade and South Korea's FDI to China on green total factor productivity, so as to provide a new perspective and ideas for the improvement of China's green total factor productivity and promote the high-quality development of China's economy Design/methodology - This paper uses the data of 30 provinces, autonomous regions and municipalities in China from 2004 to 2017 as the research sample, adopts the GML index method of SBM Directional Distance Function to measure GTFP, and analyzes the influence of South Korea-China trade and FDI from South Korea on China's GTFP. Findings - Trade is conducive to promoting technological progress, which has a significant promotion effect on China's green total factor productivity. While FDI has a significant inhibitory effect on China's green total factor productivity, which verifies the "pollution haven" hypothesis. In addition, such influence has certain regional overall heterogeneity. Trade has a more significant promoting effect on GTFP in eastern coastal areas, while FDI has a more significant inhibitory effect on GTFP in central and western inland areas. The interaction between trade and FDI is conducive to the improvement of green total factor productivity, indicating that the benign mechanism of trade and FDI has been formed. Urbanization, industrial structure, human resource level and investment in science and technology are all conducive to the improvement of GTFP. Originality/value - Through theoretical analysis and empirical test on the action mechanism of South Korea-China trade and South Korea's FDI on green total factor productivity, this paper provides a solid theoretical foundation for the further development of China-South Korea economic and trade cooperation in the future.

• 국제초고층학회논문집
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• 제12권2호
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• pp.179-193
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• 2023

It is undeniable that urban greenspace is the soul of a city. Conventional urban greenspace such as parks, community gardens, playgrounds etc. located within a city reduce the negative effects of pollution, play a major role in the survival of the urban ecosystem, and promote healthy lifestyles. Today, 55% of the world's population lives in urban areas, which is expected to increase to 68% by 2050. Projections show that urbanization and the gradual migration to urban areas combined with the fast growth of the world's population, could add another 2.5 billion people to urban areas by 2050 and almost 90% of this increase will take place in Asia(UN, 2018). As a result, many plots in the cities are and will continue to be occupied with buildings to provide residential support to the increased population. This will dangerously decrease urban greenspaces. Moreover, worldwide, food crisis, energy crisis, and social crisis is posing a great threat to the existence of mankind. Additionally, the COVID - 19 has introduced a new lifestyle where from work culture to community configuration has drastically transformed. In this scenario, residential buildings will have to serve more than just providing privacy and shelter. As urban greenspaces are being occupied by concrete residential buildings, these buildings will have to compensate for the percentage of urban green they are destroying and the issues they are imposing in the process. The goal of this thesis is to design, architecturally define and, categorize comprehensive 'sustainable Greenspace'(S.G.S) for the multi-family housing scenario. These will be different than the conventional green (veranda, rooftop green) we commonly see in residential buildings. An old, dilapidated apartment building will be the target of remodeling to fulfill the purpose of this thesis.

• 한국정보통신학회논문지
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• 제26권12호
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• pp.1908-1918
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• 2022

최근 아세안은 우리나라의 새로운 생산기지이자 소비시장으로서 각 지역에서 생산 네트워크의 활용에 대한 관심이 높아지고 있다. 특히 아세안 국가의 도시화는 상대적으로 빠른 속도로 진행되고 있으며, 각 국가들은 주거, 교통, 물류, 방범, 방재 등 낙후된 기초 인프라 시설 개선을 위해 첨단 ICT와 결합한 스마트시티 사업을 추진하고 있다. 본 연구의 목적은 국내 우수한 스마트시티 솔루션을 보유한 기업들이 아세안 국가와의 네트워크를 통해 스마트시티 구축에 참여할 수 있도록 Web 기반의 스마트시티 수출 거점 HUB 플랫폼을 개발하는 데 있다. 이러한 플랫폼을 통해 아세안 국가의 스마트시티 구축에 대한 수요를 확보할 수 있으며, 한-아세안 민관 네트워크 구축을 통해 향후 아세안 국가에서 계획 중인 스마트시티를 보다 혁신적으로 추진할 수 있다. 또한 국내 우수 기업들과 협업을 통해 실제 도시에 적용이 가능하게 되면, 세계적인 스마트시티 플랫폼 모델로 자리매김할 수 있을 것으로 기대된다.

• 국제학술발표논문집
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• The 7th International Conference on Construction Engineering and Project Management Summit Forum on Sustainable Construction and Management
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• pp.321-327
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• 2017

China is experiencing the urbanization at an unprecedented speed and scale in human history. The continuing growth of China's big cities, both in city land and population, has already led to great challenges in China's urban planning and construction activities, such as the continuous increase of construction and demolition (C&D) waste. Therefore, how to characterize cities' construction activities, particularly dynamically quantify the flows of building materials and construction debris, has become a pressing problem to alleviate the current shortage of resources and realize urban sustainable development. Accordingly, this study is designed to employ 4D-GIS (four dimensions-Geographic Information System) and Internet Plus to offer new approach for accurate but dynamic C&D waste management. The present study established a spatio-temporal pattern and material metabolism evolution model to characterize the geo-distribution of C&D waste by combing material flow analysis (MFA) and 4D-GIS. In addition, this study developed a mobile application (APP) for C&D waste trading and information management, which could be more effective for stakeholders to obtain useful information. Moreover, a cloud database was built in the APP to disclose the flows of C&D waste by the monitoring information from vehicles at regional level. To summarize, these findings could provide basic data and management methods for the supply and reverse supply of building materials. Meanwhile, the methodologies are practical to C&D waste management and beyond.

• 상하수도학회지
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• 제37권6호
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• pp.335-345
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• 2023

In Korea, as part of the Green New Deal project toward a carbon-neutral society, it is necessary to build a climate-resilient urban environment to green the city, space, and living infrastructure. To this end, SWMM-ING was improved and the model was modified to analyze the carbon reduction effect. In addition, I plan to select target watersheds where urbanization is rapidly progressing and evaluate runoff, non-point pollution, and carbon reduction effects to conduct cost estimation and optimal design review for domestic rainwater circulation green infrastructure. In this study, green infrastructure facilities were selected using SWMM-ING. Various scenarios were presented considering the surface area and annual cost of each green infrastructure facility, and The results show that the scenario derived through the APL2 method was selected as the optimal scenario. In this optimal scenario, a total facility area of 190,517.5 m² was applied to 7 out of 30 subwatersheds to achieve the target reduction. The target reduction amount was calculated a 23.50 % reduction in runoff and a 26.99 % reduction in pollutant load. Additionally, the annual carbon absorption was analyzed and found to be 385,521 kg/year. I aim to achieve additional carbon reduction effects by achieving the goal of reducing runoff and non-point pollution sources and analyzing annual carbon absorption. Moreover, considering the scale-up of these interventions across the basin, it is believed that an objective assessment of economic viability can be conducted.

• 농촌지도와개발
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• 제20권4호
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• pp.871-907
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• 2013

이 연구는 농촌지역사회의 주민조직을 기반으로 하는 새로운 농촌지역개발추진정책 시스템(주민조직 기반형 농촌지역개발정책)을 구축하고자 하는 것으로, 현재까지 관행적으로 시행되고 있는 기존의 농촌 공간단위를 기반으로 하는 농촌지역개발시스템(공간 기반형 농촌지역개발정책)을 보완하거나 대체하는 데 목적이 있다. 특히 농촌 공간 기반형 정책의 근거 가설이라고 볼 수 있는 '농촌마을은 소우주이고, 농촌마을이 농촌지역을 대표한다는' 주장은 더 이상 유효하지 않다는 점을 강조하고자 한다. 농촌마을에 있어서의 경제적, 사회적 및 공간적인 공동성은 이미 약화되거나, 퇴색되고 있다. 또한 농촌공간 만을 주된 농촌지역개발의 정책대상으로 할 경우, 현시점에서 제기되는 새로운 정책수요와 정책 환경의 변화를 효과적으로 반영할 수 없다. 이 연구는 농촌공간을 기반으로 하는 정책이 아닌, 농촌지역사회의 주민조직을 기반으로 하는 정책을 추진하는 것이 필요하고 경우에 따라서는 더 바람직하다는 점을 지적하고 있다. 이러한 정책은 이미 EU의 대표적인 농촌개발정책인 리더프로그램이나 일본 등의 마을만들기 정책에서 시행되고 있으며, 많은 효과를 거두고 있고 현실적으로 주민참여를 가능하게 하는 프로그램으로 인식되고 있다. 주민조직체에 기초한 농촌지역개발정책시스템을 도입할 경우 다양한 조직체의 참신하고 전문적인 정책구상을 수용할 수 있고, 마을공간의 범위를 넘어선 농촌자원을 기초로 협력할 수 있는 정책추진 공간단위의 유연성을 아울러 가져올 수 있다. 여기서 제안하는 주민조직은 지역사회의 발전과 활성화를 위해서 계획의 수립, 실천 및 주민역량강화를 실제로 수행하는 기능을 담당하는 다양한 조직으로서 '주민협의회'로 명명하고, 주민협의회를 지원할 수 있는 중간조직을 만드는 것을 주 내용으로 하고 있다. 중간조직은 지역의 여건에 따라서 주민주도 또는 행정주도 등의 다양한 형태가 가능할 것으로 보인다.

• 한국콘텐츠학회논문지
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• 제13권10호
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• pp.266-277
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• 2013

최근 기후변화와 도시화의 진전으로 물에 대한 수요가 확대되고 있는 반면, 깨끗하고 안전한 물의 공급은 한정됨에 따라, 효율적인 물 관리의 중요성이 강조되고 있다. 그러나 우리나라의 물 관리 행정체계는 다부처가 관여하는 전형으로 효율성이 매우 떨어지고 있는 것으로 평가되고 있다. 즉 물과 관련된 업무가 국토부, 환경부, 농림부, 안전행정부, 산업부 등으로 분산되어 있다. 이에 따라 물 관리와 관련된 주요 업무의 조정과 통합이 어렵고, 효율성이 떨어지는 문제가 지속되고 있다. 본 연구는 우리나라 물 관리 행정체계에 관한 선행연구를 검토하여 핵심쟁점을 도출하고, 현행 물 관리 체계의 현황과 문제점을 분석한 후, 이에 대한 전문가 인식을 설문조사를 통해 조사하였다. 조사결과, 우리나라의 물 관련 전문가들은 물 관리 행정체계의 가장 큰 문제를 '부처간 물 관리 정책조정의 실패(55.8%)'로 인식하고 있고, 대안으로 새로운 통합 조정 조직인 '(가칭)물 관리위원회의 신설'(77.0%)을 지지하고 있는 것으로 나타났다. 또한 새로운 조직의 신설 없이, 하부조직, 수도, 통계 등 세부적인 물 관련 업무를 통합하는 방안에 대해서는 환경부로의 통합을 지지하는 의견이 상대적으로 높은 것으로 나타났다. 이러한 전문가 인식조사에 기초할 때, 우리나라의 물관리 행정체계는 통합 조정을 강화하는 방향으로 개편될 필요가 있으며, 개발보다는 보전의 관점에서 수량보다는 수질을 중심으로, 새로운 조직의 신설 또는 환경부로의 통합을 통 해 효율성을 강화하는 방향으로 개편될 필요가 있다.