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시간지연 제어기를 안정하게 구현하기 위한 대향 필터링 보상기의 설계
문의준(Moon U.J.),이상열(Lee S. Y.),이영철(Lee Y.C),이정훈(Lee J.H.) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
Time Delay Controller (TDC) is a model following controller which uses input and output values and state variables to estimate additional quantity of dynamics due to external disturbances and/or model parameters variation at some past instant. TDC is very robust against parametric uncertainty while it is not robust against unmodeled dynamics even showing instability. To solve this problem a stability analysis is performed am a compensation technique using reduced order observer, Anti-Filtering Compensator (AFC), is proposed for a case in which the high order known dynamics is deliberately ignored. If the ignored dynamics causes instability of the TDC control system, AFC is shown to be indispensible for a stable implementation of TDC.
문승운(Moon, Seung-Woon),김의준(Kim, Euijune),신혜원(Shin, Hyewon),이유진(Yi, Yoojin),문인석(Moon, Inseok),지앙민(Min, Jiang) 대한국토·도시계획학회 2017 國土計劃 Vol.52 No.5
The purpose of this study is to analyze the economic impacts of public infrastructure investment and economic integration on the Northen Area of Korean peninsula. The growth sources for these areas are classified into a decrease in logistic costs by construction of two Asian Highways (AH1 and AH6) originating from Korea, an increase in regional investments on China, Russia, and North Korea by $ 61.8 billion, and deregulation on spatial mobility of commodities across the regions. The effects are calibrated with a simultaneous equation system of regional incomes and interregional trades. The two highways going from Korea to China and Russia could lead to reductions of the logistic costs (time) by 33%~54% between Seoul and North-east China, and by 44%~56% between Seoul and Far Eastern Federal Districts of Russia. The construction of the Asian Highway, the increase in investment and the deregulation will create the economies of scale and create and expand new markets, which will have a positive effect on the economies of the countries of Northen Area.
문승운(Moon, Seung-Woon),김의준(Kim, Euijune) 대한국토·도시계획학회 2018 國土計劃 Vol.53 No.6
Heavy snow is a natural disaster that causes serious economic damage. Since snowfall has been increasing recently, there is a need for measures against heavy snowfall. In order to make a policy decision on heavy snowfall, it is necessary to estimate the precise amount of damage by heavy snowfall. The direct damage of the heavy snow is severe, however the indirect damage caused by the road congestion and the urban dysfunction is also serious. Therefore, it is necessary to estimate indirect damage of snowfall. The purpose of this study is to estimate the effects on the regional economy from the limitation in traffic logistics caused by heavy snow using the transport demand model and inoperability input-output Model. The result shows that the amount of production loss caused by the heavy snow is KRW 2,460 billion per year and if the period of snowfall removal is shortened by one day or two days, it could be reduced to KRW 1,219 or 2,787 billion in production loss.
김의준(Kim, Euijune),문승운(Moon, Seung Woon) 한국지역개발학회 2019 韓國地域開發學會誌 Vol.31 No.1
There has been an increasing concern with generation and trans-boundary flows of particulate matters (PM) which have negative spillover effects on human health. This study aims to identify responsibility of the PM generation in Korea through comparison of the production-based and consumption-based PM emission accounting by region and industry. This study assesses production based and consumption based PM emission of inter-regional and inter-industry with Multi-regional input-output table (Bank of Korea) and regional PM emission data by region and source (Ministry of Environment). A result shows that consumption-based and production-based emissions are significantly different in each region. When PM abatement policies are implemented, it is necessary to identify the impacts on the economy of the production region and the consumption region and to consider the equality between the regions.
사회재난의 경제적 파급효과 2016년 철도파업으로 인한 물류대란 피해
문승운(Moon, Seung Woon),김의준(Kim, Euijune) 한국지역개발학회 2018 韓國地域開發學會誌 Vol.30 No.5
KORAIL estimate that it suffered an economic loss of 98.9 billion won due to a railway strike in 2016 and indirect industrial damage to other industries exceeded 80 billion won. In order to make a policy decision on railroad strikes, it is necessary to estimate the precise amount of damage by railroad strikes. This paper is focused on estimation of economic cost of railroad strike using the micro-simulation CGE model and the Workplace Panel Survey(WPS). The WPS is a statistical survey to conducted by the Korea Labor Institute. The result shows that the cost of railroad strike could is KRW 6.225 tillion (0.524% of the GDP) per year. If the probability of strike decreased through conflict adjustment between labor and management, the strike costs could reduce by KRW 2,241 to 6,097 billion.
도시공원 조성이 도시공간구조 변화에 미치는 영향 분석 - 성동구 서울숲 젠트리피케이션 현상을 중심으로 -
문승운,김의준,구진혁,Moon, Seung-Woon,Kim, Euijune,Ku, Jin-Hyuk 한국조경학회 2017 韓國造景學會誌 Vol.45 No.2
오늘날의 도시공원은 도시자연경관 보호, 도시민의 건강 휴양 및 정서생활 향상 등의 본원적 역할뿐만 아니라, 이론적으로는 도시의 공간구조를 재조정하는 도시시스템으로써의 역할을 기대한다. 본 연구는 도시시스템으로써의 도시공원의 역할이 이론뿐만 아니라, 과연 현실에서 실증적으로 작동하고 있는지를 계량적으로 분석하는데 목적이 있다. 이를 위해 본 연구에서는 도시공원으로 인해 야기되는 젠트리피케이션 현상을 도시공원이 도시공간구조를 변화시키는 과정이라 여기고, 젠트리피케이션 지수를 통해 도시공원 조성과 도시공간구조 변화와의 관계를 실증적 계량적으로 분석하였다. 실증분석의 대상은 '서울숲'이 위치한 성동구이다. 서울숲은 서울을 대표하는 초대형 도시공원으로, 2005년 개장 이후 주변 지역에 젠트리피케이션 현상이 발생하고 있으며, 이에 따라 성동구의 도시공간구조가 변화하였을 것으로 예상된다. 분석 방법으로는 젠트리피케이션 지수 및 도시공원 접급성 지수를 조작적으로 정의하고 도시공원 조성 전과 후의 젠트리피케이션 지수의 변화, 그리고 젠트리피케이션 지수와 도시공원 접근성 지수와의 관계를 분석하였다. 자료는 서울숲이 위치한 성동구 지역의 491개 집계구의 2000년, 2005년, 2010년 통계자료를 이용하였으며, 분석 방법으로는 이중차분법과 선형확률모형을 실시하였다. 분석 결과, 서울숲의 조성으로 인해 성동구의 젠트리피케이션 지수의 분포양상 및 방향성이 역전되었으며, 도시공원과의 접근성이 향상될수록 젠트리피케이션 현상은 크게 나타났다. 결론적으로, 도시공원은 젠트리피케이션을 야기시키고 있으며, 도시공원으로 인한 젠트리피케이션은 도시공간구조를 변화시키는 동인이자 결과로 나타났다. 도시공원은 도시시스템의 일부로써 도시의 공간구조 및 형태를 만드는데 큰 영향을 끼치고 있음이 확인되었다. 본 연구의 의의는 인프라스트럭처로써의 도시공원, 또는 도시의 시스템 등 이론적으로 거론되던 도시공원의 역할들을 실제 사례와 자료를 가지고 실증적 계량적으로 분석했다는데 있다. The urban park plays important roles in protecting the urban landscape and improving citizens' health, recreation, and the emotional life. Above and beyond these roles, the urban park is expected to rearrange urban spatial structures as a kind of urban system. The purpose of this paper is to identify empirically to change urban spatial structures by construction of the urban park. This study regards gentrification around the urban park as a process to change urban spatial structures. The gentrification means the regeneration and upgrading of deteriorated urban property by the middle class or commercial developers. The site of case analysis is the Seoul Forestry Park in Sungdong-gu, Seoul. The Seoul Forestry Park is regarded as a representative urban park of Seoul, and caused gentrification around park after the 2005 opening. This study operationally defines the gentrification index and the accessibility index from an urban park and offers an empirical analysis of relation among the urban park, the gentrification and urban spatial structure in a statistic district which is the minimum unit of Korean statistic data in 2000, 2005, and 2010, using Difference-in-Difference method and linear probability model. The results of this empirical study show that the Seoul Forestry Park changes urban spatial structures by gentrification. It reverses a trend of migration of gentrifiers before and after construction of the Seoul Forestry Park. It suggests urban park construction as an alternative method for urban regeneration by inducing the middle class into the inner city of Seoul.