전국 주택시장 간의 전이 네트워크 특성 분석 연구

김진수 ( Kim¸ Jin-soo ) 건국대학교 법학연구소 2021 일감부동산법학 Vol.- No.23

본 연구에서는 전국 주택시장 간의 전이 관계와 시장구조 파악을 목적으로 하고 있다. 이를 위해 서울 5개 권역과 지방 6대 광역시를 대상으로 2012년 5월 14일부터 2020년 2월 3일까지 주간 단위 아파트매매가격지수 자료를 활용하여 GARCH-BEKK 모형과 네트워크 분석을 하였다. 전국 주택시장 간의 전이관계를 GARCH-BEKK 모형으로 분석한 결과, 5% 유의수준에서 유의한 전이관계는 57개로 51.82%의 전이 비율을 보였으며, 전이관계는 서울의 5개 권역 간에는 양방향 관계를 보였으며, 서울과 광역시 간에는 단방향 관계를 보이는 것으로 나타났다. 네트워크 분석 결과, 연결 중앙성과 근접 중앙성 모두 대구시와 서울의 서남권, 동북권, 도심권이 높은 것으로 나타나 이들 지역을 중심으로 전이관계가 형성되어 있는 것을 규명하였다. 이러한 결과는 이들 지역의 주택매매 가격이 다른 지역의 가격형성에 영향을 크게 미친다는 것을 의미하는 것으로 아파트 매매가격의 지역 간 전이는 일관성 있는 패턴이 아니라는 것을 의미한다. 그러므로 정부에서는 주택정책을 전국을 대상으로 한 정책과 특정 지역을 대상으로 한 정책을 병행하여 수립하는 것이 바람직하다는 점을 시사하고 있다. The purpose of this study is to understand the transitional relationship between the national housing market and the market structure. For the purpose, the GARCH-BEKK model and network analysis were conducted using data on the weekly apartment price index from May 14, 2012 to February 3, 2020, in five areas of Seoul and six Metropolitan Cities in the province. As a result of analyzing the transitional relations among the national housing markets with the GARCH-BEKK model, 57 significant transitional relations were found at 5% significance level, which was 51.82%. In addition, the transfer relationship showed a two-way relationship between the five areas of Seoul, and a one-way relationship between Seoul and Metropolitan Cities. Network analysis results, both degree centrality and closeness centrality were found to be high in the Daegu City, Seoul’s Southwestern, Northeastern, and Downtown areas. These results indicate that the housing price in these regions greatly influences the price in other regions, and that the interregional transfer of apartment sales prices is not a consistent pattern. Therefore, the government suggests that it is desirable to establish the housing policy in parallel with the policy targeting the whole country and the targeted area.

Context-based Web Application Design

Jinsoo Park(Jinsoo Park) 한국전자거래학회 2007 한국전자거래학회지 Vol.12 No.2

웹 기능의 향상과 웹 관련 기술의 발전, 레거시 시스템과의 통합 필요성 증대, 자주 변하는 웹 콘텐츠와 구조 등으로 인하여 웹 애플리케이션을 개발하고 관리하는 일이 과거보다 훨씬 더 복잡하게 되었다. 그러나 이러한 다양한 요인들을 고려하는 포괄적인 웹 애플리케이션 설계 방법론은 아직 존재하지 않고 있다. 따라서 본 연구에서는 이러한 요인들을 고려한 컨텍스트 기반의 웹 애플리케이션 설계 방법론을 제시하고자 한다. 본 연구에서 제시하는 방법론에서는 웹 정보를 전달하는 메커니즘에 따라 구분되는 9 종류의 웹 페이지 형태와 웹 페이지 간의 다양한 의미 관계를 정의하는 7 종류의 링크 형태 및 설계 과정 중에 사용되는 여러 종류의 컴포넌트 역할을 구별하는 소프트웨어 컴포넌트 형태 등 다양한 종류의 모델링 기법들을 소개하고 있다. 뿐만 아니라 이 방법론은 ‘콤펜디엄(compendium)’이라 불리는 일단의 관련된 정보 클러스터들로 이루어진 독창적인 웹 애플리케이션 모델을 사용하고 있다. 하나의 콤펜디엄은 주제(theme), 컨텍스트 페이지, 링크 및 컴포넌트로 구성된다. 이러한 접근방법은 모듈 방식의 설계에 유용할 뿐만 아니라 항상 변하는 웹 애플리케이션의 콘텐츠와 구조를 관리하는데도 도움이 된다. 본 연구에서 제시한 방법론은 의미적으로 응집력이 있고 구문적으로 느슨히 결합된 유연한 웹 디자인 산출물을 생성하는데 도움이 될 것이다. Developing and managing Web applications are more complex than ever because of their growing functionalities, advancing Web technologies, increasing demands for integration with legacy applications, and changing content and structure. All these factors call for a more inclusive and comprehensive Web application design method. In response, we propose a context-based Web application design methodology that is based on several classification schemes including a Webpage classification, which is useful for identifying the information delivery mechanism and its relevant Web technology; a link classification, which reflects the semantics of various associations between pages; and a software component classification, which is helpful for pinpointing the roles of various components in the course of design. The proposed methodology also incorporates a unique Web application model comprised of a set of information clusters called compendia, each of which consists of a theme, its contextual pages, links, and components. This view is useful for modular design as well as for management of ever-changing content and structure of a Web application. The proposed methodology brings together all the three classification schemes and the Web application model to arrive at a set of both semantically cohesive and syntactically loose-coupled design artifacts.

A Study on the Characteristics of PM1.0 Chemical Components Using a Real-time Aerosol Mass Spectrometer

Jinsoo Park,Jinsoo Choi,Hyunjae Kim,Jun Oh,Minyoung Seong,Joonyoung Ahn,Sangbo Lee,Jeongho Kim 한국도시환경학회 2018 한국도시환경학회지 Vol.18 No.4

This study aims to identify the characteristics of oxidation and chemical composition of PM in winter season, 2017 at Incheon area. The mean concentration of air pollutants were 46 ± 22 μg/m3-PM10, 29 ± 18 μg/m3/-PM2.5, 5 ± 3 ppb-SO2, 0.56 ± 0.24 ppm-CO, 21 ± 13 ppb-O3 and 28 ± 17 ppb-NO2, respectively. The dominant ion of the PM1.0 chemical component were organic with 3.2 μg/m3 and nitrate with 1.9 μg/m3. The day and night variation of the PM1.0 chemical components was higher in nighttime than those of daytime. The averaged nitrate oxidation rate (SOR) was 0.06 and sulfate oxidation rate was 0.11 during the field campaign. In the high mass loading period, nitrate oxidation rate (NOR) was up to 0.6 and also the nitrate in PM1.0 was increased. The averaged ratio of NOx/SO2 was 8.7 and nitrate/sulfate was 3.1, respectively. In this results, the nitrate component in PM1.0 was influenced by NOx from the stationary source as power plant and the mobile source around the measurement site.

수도권 상공의 PM<SUB>1.0</SUB> 및 전구물질 특성

박진수(Jinsoo Park),김현재(Hyunjae Kim),최진수(Jinsoo Choi),안준영(Junyoung Ahn),김대곤(Daegon Kim),김정호(Jeongho Kim) 대한환경공학회 2020 대한환경공학회 학술발표논문집 Vol.2020 No.11

초미세먼지 간이측정기 성능평가 방법 마련

박진수(Jinsoo Park),전하은(Haeun Jeon),성민영(Minyoung Sung),김현재(Hyunjae Kim),최진수(Jinsoo Choi),김대곤(Daigon Kim),김영우(YoungWoo Kim),안준영(Joonyoung Ahn) 대한환경공학회 2020 대한환경공학회 학술발표논문집 Vol.2020 No.11

Portal Vein Thrombosis During Liver Transplantation: The Risk of Extra-Anatomical Portal Vein Reconstruction

( Jinsoo Rhu ),( Jong Wook Oh ),( Gyu-seong Choi ),( Jong Man Kim ),( Jae-won Joh ) 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1

Aims: This study is designed to analyze the risk and benefit of extra-anatomical portal vein reconstruction during liver transplantation of patient with portal vein thrombosis. Methods: Patients who underwent liver transplantation between 2008 to 2018 were reviewed. Portal vein thrombosis was graded according to the Yerdel system. Risk factor for portal vein complication-free, graft and overall survival were analyzed with multivariate Cox regression. Results: Seventy out of 1180 patients had portal vein thrombosis. Number of patients who underwent extra-anatomical reconstruction were 3 (13.0%), 3 (15.0%), and 6 (50.0%) with grade II, III and IV thrombosis, respectively. Grade III patients with extra-anatomical reconstruction (HR=10.212, CI=2.475-42.133, P=0.001), grade IV with both anatomical (HR=16.991, CI=5.224-54.740, P<0.001) and extra-anatomical reconstruction (HR=12.262, CI=2.698-50.666, P=0.001) were risk factors for portal vein complication-free survival. Grade IV thrombosis with both anatomical (HR=4.296, CI=1.059-17.430, P=0.041) and extra-anatomical reconstruction (HR=7.777, CI=2.461-24.571, P<0.001) were risk factors for graft failure. Extra-anatomical reconstruction for both grade I to III (HR=3.638, CI=1.155-11.453, P=0.027) and grade IV thrombosis (HR=4.798, CI=1.773-12.982, P=0.002) were risk factors for survival. Conclusions: Grade IV thrombosis and extra-anatomical reconstruction were related to poor prognosis. Therefore, thorough evaluation and planning is required for patients with portal vein thrombosis.

Hepatic venous territory mapping in living donor liver transplantation using right liver graft: An objective parameter for venous reconstruction

Jinsoo RHU,Jong Man KIM,Gyu-Seong CHOI,Jae-Won JOH 한국간담췌외과학회 2022 Annals of hepato-biliary-pancreatic surgery Vol.26 No.-

Key Issues With Printed Flexible Thin Film Transistors and Their Application in Disposable RF Sensors

Jinsoo Noh,Minhoon Jung,Younsu Jung,Chisun Yeom,Myungho Pyo,Gyoujin Cho IEEE 2015 Proceedings of the Institute of Electrical and Ele Vol.103 No.4

<P>This paper addresses the key issues that must be overcome to realize fully printed TFT-based flexible devices via commercially viable methods. In particular the threshold voltage (V<SUB>th</SUB>) variation in printed TFTs is a serious impediment to the successful launch of fully printed TFT-based devices in the market. The underlying causes of the V<SUB>th</SUB> variation in fully printed TFTs were analyzed by considering the misalignment of printed drain-source to gate electrodes, the rheology of electronic inks and effects from external sources of charge. By alleviating the influences of external sources of charge using a printed passivation layer, V<SUB>th</SUB> variation is maintained below 30% using a fully printed process. Based on the attainable variation range, the required number of integrated TFTs was estimated to fabricate a fully printed TFT-based radio frequency (RF) sensor device. A practical compromise enables fully printed RF sensors to be realized via the scalability of printing processes that mitigate V<SUB>th</SUB> variation by minimizing the level of TFT integration. Prototypes of fully printed RF sensors with human interactive capability-an RF sensor label, and an RF e-sensor (cyclic voltammetry) tag-are enabled with as few as 26 printed TFTs, demonstrating that low-cost and high throughput manufacturing of printed electronics is feasible.</P>

New morphological type records of Vollenhovia nipponica (Hymenoptera: Formicidae) in Korea

Jinsoo Kim,Seongwon Yun,Jiwon Sohn,Jonghyun Park,Seunggwan Shin 한국응용곤충학회 2022 한국응용곤충학회 학술대회논문집 Vol.2022 No.04

뇌파 기반 Mental Workload 지표와 N-back 과제 수행 능력 간의 상관관계 연구

Jinsoo Kim,Miyoung Kim,Eunmi Oh,Sung-Phil Kim 대한인간공학회 2013 대한인간공학회 학술대회논문집 Vol.2013 No.10

Objective: This study aims to investigate a relationship between a neural correlate of mental workload and the performance of the N-back memory task. Background: Many studies have explored neuronal correlates of mental workload by measuring the brain signal. In particular, the power of the theta rhythm (4-8 Hz) embedded in electroencephalogram (EEG) over the frontal region of the human brain has been shown to vary with mental workload. Studies have shown correlations between the frontal theta power and mental workload via various mental tasks, including the N-back task, Sternberg’s task, the multi-attribute task battery, mental arithmetic tasks and driving tasks, to name a few. However, behavioral evidence regarding the correlation between frontal theta power in individuals and their behavioral mental task performances still remains unclear. Method: Ten healthy subjects performed the N-back task with various task difficulties (0-3 back tasks), while their EEG signals were recorded using a 20-channel system. The power spectrum of the theta band (4-8 Hz) from bandpass-filtered EEG signals at the frontal channel (Fz) was calculated for each task. Results: The frontal theta power exhibited significant positive linear correlations with the error rates both in the 2-back and 3-back tasks (r > 0.68, F-test, p < 0.05), but neither in the 0-back task nor in the 1-back task. Conclusion: Individuals with poor N-back task performance showed greater frontal theta power, reflecting heavier mental workloads than those with good performance. The results indicate that one may use the frontal theta power of EEG to index individuals’ mental capacity in performing a given task.