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A Study on Risk Evaluation of Crime in the Seoul Metropolitan Area based on Poisson Regression Model
Kim, Hag-Yeol,Yu, Hye-Kyung,Park, Man-Sik,Heo, Tae-Young 한국통계학회 2012 응용통계연구 Vol.25 No.5
In this study, we identify the variables that affect the number of crime and spatial correlation in the Seoul metropolitan area, in addition, we measure the relative risk on the incidence of crime by a Poisson regression model. We suggest a statistical methodology to make a risk map for crime based on relative risk instead of the total event of crime by region using the Geographic Information System. To demonstrate the use and advantages of this methodology, this study presents an analyses of the total crime count in 25 wards in the Seoul metropolitan area.
김학열(Kim Hag-Yeol) 한국도시행정학회 2010 도시 행정 학보 Vol.23 No.4
This study analyzes hourly measurements of 27 air quality monitoring stations (AQMS) during 3 months (May~July) in 2000 and 2005, to propose an approach to determining the division of ambient ozone quality basins (AOQB) in Seoul Metropolitan Area by employing the following two methods: (1) the Bonferroni multiple comparison method for identifying differences among the population means of AQMS within each ozone warning zone (OWZ); (2) Markov Chain model for assessing the viability of constructing a pooled transition probability matrix over AQMS within an OWZ. The space-homogeneity of the chain is tested whether or not transition probabilities vary across regions (or AQMS) within an OWZ by the goodness of fit test. The results imply that (1) the current OWZ is not appropriate for AOQB in normal situations because of inequality between population means and non-homogeneity of the pooled Markov Chain across stations; (2) the methods involved in this paper can be a good way to delineate the division of AOQB. If successful AOQB is decided, it is highly effective to implement the ozone warning program and ozone management projects on homogeneous ozone regions.
김건중 ( Kim Geon Jung ),이창재 ( Lee Chang Jae ),김소희 ( Kim So Hui ),김동자 ( Kim Dong Ja ),강인구 ( Kang In Gu ),박학열 ( Park Hag Yeol ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.10
Fetus in fetu is a very rare congenital abnormality in which one vertebrate fetus is enclosed within the abdomen of another fetus. With advancing ultrasound imaging technique, a few case of prenatal diagnosis is reported recently. A case of fetus in fetu
김용열(Yong Yeol Kim),이강학(Gang Hag Lee),박홍규(Hong Kyu Park),김민길(Min Gil Kim) 한국유체기계학회 2009 유체기계 연구개발 발표회 논문집 Vol.2009 No.-
In this study, we developed the sludge recycling process and the zeolite to reuse effectively the sludge of water treatment plant, and applied. therefore we solved the problems of sludge disposal. The zeolite's structure and properties were analyzed by SEM, TCLP of US EPA and ammonia gas emission test in accordance with tile elapse of time.