도시공간적 요인에 의한 침수피해의 영향 분석

박기용(Kiyong Park),오후(Hoo Oh),전원식(Won-Sik Jeon),이의훈(Eui Hoon Lee) 한국산학기술학회 2020 한국산학기술학회논문지 Vol.21 No.9

본 연구는 도시지역에 침수피해가 발생하였을 경우, 장기적인 측면에서 침수피해를 최소화 할 수 있는 방안을 마련하기 위해 비구조적인 대책에 초점을 맞추어 도시공간적인 요인과 침수피해의 영향 관계를 분석하였다. 도시공간적인 요인에 의한 침수피해 영향을 분석하고자 다중회귀 분석(Multiple Regression Analysis)을 활용하여 적용하였다. 도시공간적인 요인은 Open Space, 방재시설, 도시화 부문으로 유형화하였다. 분석 결과, 침수피해 지역은 일정한 지역에 한정되어 발생하며, 공간적으로 매우 높은 상관성을 보이고 있음을 알 수 있다. Open Space의 면적이 넓을수록 침수피해액이 감소하는 바, 녹지, 공원 등의 감소가 침수피해를 증가시키고 있음을 확인할 수 있어, 도시의 안전이라는 기능적인 부분에 있어서 침수피해를 예방하고 대응하기 위해 매우 중요한 요인임을 알 수 있다. 도시화 부문에 포함되는 인구밀도, 지역내총생산(GRDP) 등의 요인은 그 값이 클수록 침수피해액은 증가하는 것으로 분석되어, 침수피해를 유발시키는 원인으로 판단된다. 따라서 기후변화에 적응하기 위해서는 녹지, 공원 등의 도시공간 계획을 전략적으로 수립해야 하며, 인구밀도, 지역내총생산(GRDP) 등은 침수피해를 유발시키는 주요 요인이므로 회복력 차원에서 적절하게 활용한다면 대응과 복구 역할을 할 것으로 판단된다. This study investigated the long-term measures to minimize flood damage in the event of flooding in urban areas. The relationship between urban spatial factors and the impact of flood damage was analyzed, focusing on non-structural measures. The urban spatial factors were categorized into three parts: open space, disaster prevention facilities, and urbanization sectors. Multiple regression analysis was used to investigate how urban spatial factors influence flood damage. As a result of the analysis, the crucial factors, such as the reduced green areas and parks included in the open space sectors, resulted in an increased flood damage potential. The posterior factors, such as the population density and GRDP included in the urbanization sector concurrently led to an increase in the flood damage potential. Therefore, to better adapt to climate change, it is necessary to establish urban spatial plans strategically, such as green areas and parks. Meanwhile, the population density and GRDP are also the main factors causing flood damage. Therefore, when used appropriately in terms of resilience, it will serve as adaptations and recovery.

Study on Condensation Heat Transfer Characteristics of Hydrocarbons Natural Refrigerants

Hoo Kyu Oh,Seung Jun Park,Ki Won Park,Geon Sang Roh,Jae Cheon Jeong 대한설비공학회 2001 International Journal Of Air-Conditioning and Refr Vol.9 No.3

This study investigated the condensation heat transfer coefficients of R-22, R-290 and R-600a inside horizontal tube. Heat transfer measurements were performed for smooth tube with inside diameter of 10.07 ㎜ and outside diameter of 12.07 ㎜ and inner grooved tube having 75 fins whose height is 0.25 ㎜. Condensation temperatures and mass velocity were ranged from 308 K to 323 K and 51 ㎏/㎡s to 250 ㎏/㎡s, respectively. The test results showed that the local condensation heat transfer coefficients increased as the mass flux increased, and also the effects of mass velocity on heat transfer coefficients of R-290 and R-600a were less than those of R-22. Average condensation heat transfer coefficients of natural refrigerants were superior to that of R-22. The present results had a good agreement with Cavallini-Zecchin's correlation for smooth and inner grooved tubes.

Identification of Candidate Genes Associated with Beef Marbling Using QTL and Pathway Analysis in Hanwoo (Korean Cattle)

Park, Hye-Sun,Seo, Seong-Won,Cho, Yong-Min,Oh, Sung-Jong,Seong, Hwan-Hoo,Lee, Seung-Hwan,Lim, Da-Jeong Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.5

Marbling from intramuscular fat is an important trait of meat quality and has an economic benefit for the beef industry. Quantitative trait loci (QTL) fine mapping was performed to identify the marbling trait in 266 Hanwoo steers using a 10K single nucleotide polymorphism panel with the combined linkage and linkage disequilibrium method. As a result, we found nine putative QTL regions for marbling: three on BTA6, two on BTA17, two on BTA22, and two on BTA29. We detected candidate genes for marbling within 1 cM of either side of the putative QTL regions. Additionally, to understand the functions of these candidate genes at the molecular level, we conducted a functional categorization using gene ontology and pathway analyses for those genes involved in lipid metabolism or fat deposition. In these putative QTL regions, we found 95 candidate genes for marbling. Using these candidate genes, we found five genes that had a direct interaction with the candidate genes. We also found SCARB1 as a putative candidate gene for marbling that involves fat deposition related to cholesterol transport.

Room temperature humidity sensors based on rGO/MoS₂ hybrid composites synthesized by hydrothermal method

Park, Seo Yun,Lee, Jung Eun,Kim, Yeon Hoo,Kim, Jason J.,Shim, Young-Seok,Kim, Soo Young,Lee, Min Hyung,Jang, Ho Won Elsevier 2018 Sensors and actuators. B Chemical Vol.258 No.-

<P><B>Abstract</B></P> <P>Recently, two-dimensional (2D) materials have attracted attention for gas sensor fields due to their unique properties such as high surface to volume ratio and numerous active sites. In particular, reduced graphene oxide (rGO) and MoS<SUB>2</SUB> are one of the most promising materials for humidity sensor due to the oxygen containing functional groups on the surface of rGO and dangling bonds at the edge site of MoS<SUB>2</SUB>. Herein, we present 2D rGO/2D MoS<SUB>2</SUB> hybrid composites (MS-GOs) synthesized by hydrothermal method. rGO and MoS<SUB>2</SUB> are mixed with different molar ratios and drop-casted on SiO<SUB>2</SUB> substrate with Pt interdigitated electrode. At an optimized molar ratio of rGO/MoS<SUB>2</SUB>, the sensor device exhibits high sensitivity, good selectivity, rapid response and recovery, and good linearity for humidity sensing. The enhanced sensing properties are attributed to the <I>p</I>-<I>n</I> junction between rGO and MoS<SUB>2</SUB>. Our work provides an efficient way for realizing high-performance and fast responding humidity sensors utilizing 2D-2D heterojunction materials based chemoresistive humidity sensors for use in diverse applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> 2D rGO/2D MoS<SUB>2</SUB> hybrid composites are synthesized by hydrothermal method and their humidity sensing properties are evaluated. </LI> <LI> rGO/MoS<SUB>2</SUB> based sensors exhibit high sensitivity, good selectivity, rapid response, and good linearity for humidity sensing. </LI> <LI> The enhanced sensing properties of rGO/MoS<SUB>2</SUB> than pristine rGO are attributed to p-n junction between rGO and MoS<SUB>2</SUB>. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Serum NT-proBNP Level as a marker for cardiopulmonary function in preeclampsia(초)

( Won Joon Seong ),배지혜 ( Ji Hye Bae ),( Gun Oh Chong ),( Dae Gy Hong ),( Taek Hoo Lee ),( Yoon Soon Lee ),( Young Lae Cho ),( Sang Sik Chun ),( Il Soo Park ) 대한산부인과학회 2009 대한산부인과학회 학술대회 Vol.95 No.-

EFFECT OF ENTRAINMENT ON COMBUSTION EFFICIENCY OF HIGH ASH ANTHRACITES IN FLUIDIZED BED COMBUSTORS

Park, Won Hoon,Choi, Jeong Hoo,Park, Yeong Seong,Park, Young Ok,Son, Jae Ek 한국화학공학회 1985 Korean Journal of Chemical Engineering Vol.2 No.2

Estimation of Crime Vulnerable Group’s Influence on Crime Types by Multiple Regression Analysis

Hoo Oh,Jeong Hun Won,Ki Yong Park 위기관리 이론과 실천 2020 Crisisonomy Vol.16 No.1

본 연구에서는 취약성 저감 측면에서 범죄취약계층과 범죄유형별 범죄발생건수에 대한 다중회귀분석을 실시하여 범죄취약계층별 범죄유형에 대한 영향관계를 분석하였다. 독립변수는 선행연구 고찰을 통해 7개의 취약계층(고령자, 아동·청소년, 외국인, 여성, 1인 가구, 다문화 가구, 기초생활수급자)으로 선정하였으며, 범죄유형별 취약계층과의 관계를 분석하기 위해 각 유형별 발생건수를 종속변수로 선정하였다. 범죄 유형은 활용된 데이터 유형을 반영해 강력범, 절도범, 폭력범, 지능범, 풍속범, 기타 형법범, 특별법범으로 구분하였다. 범죄취약계층 중 유의미한 상관관계를 갖는 취약계층을 분석한 결과는 다음과 같다. 첫째, 범죄유형별로 취약계층에 따른 영향관계가 다르게 나타났다. 둘째, 모든 범죄에서 고령자와 아동·청소년은 음의 영향관계를 갖는다. 셋째, 특별법범에서는 외국인이, 절도범과 폭력범에서는 여성이, 강력범에서는 다문화가구가, 폭력범과 지능범&풍속범, 그리고 기타 형법범에서는 기초생활수급자가 양의 영향관계를 나타냈다. 본 연구의 결과는 불필요한 범죄두려움을 없애고, 범죄유형별 취약특성에 따른 맞춤형 대책을 마련하는 데에 기여할 것으로 판단된다. This paper identified crime vulnerable groups by crime type through performing a multiple regression analysis. Based on the review of prior studies, seven crime vulnerable groups (independent variable) were classified such as the elderly, children and youth, foreigners, female, basic livelihood security recipients, one-person households and multicultural families. Crime types (dependent variable) include heinous crime, theft crime, violent crime, intelligent crime, crime against the customs, other criminal crimes, and special crimes. The results of statistical analyses were as follows: First, crime vulnerable groups differed by crime types. Second, the elderly and children/youth showed a negative coefficient in all crime types. Third, foreigners were positively related with special crimes, while female was vulnerable to theft and violent crime. Multicultural families were vulnerable to heinous crime, while the basic livelihood security recipients were related to violent crime, intelligent crime, crime against the customs and other criminal crimes. The results of this study are expected to contribute to eliminating unnecessary fear of crime and developing customized measures based on the vulnerable characteristics of each crime type.

Assessment of the Thickness of the Roof of the Glenoid Fossa Using Cone Beam Computed Tomography in Asymptomatic Korean Adult Patients

Park, Hyun-Jeong,Seo, Yo-Seob,Yoon, A-Hyang,Kim, Ji Hoo,Ryu, Ji-Won Korean Academy of Orofacial Pain and Oral Medicine 2019 Journal of Oral Medicine and Pain Vol.44 No.3

Purpose: The aim of this study was to assess the thickness of the roof of the glenoid fossa (RGF) in Korean adult population without symptoms of temporomandibular disorder (TMD) using cone-beam computed tomography (CBCT). Methods: CBCT Data from 111 Korean adult patients aged ${\geq}25years$ (55 males and 56 females) without signs and symptoms of TMD were analyzed retrospectively in this study. The thickness of the RGF was determined as the perpendicular distance between the 'glenoid fossa line' and 'middle cranial fossa line' on parasagittal and paracoronal reconstructions, respectively. The thickness of the RGF according to sex and age was analyzed using t-tests (p<0.05). Differences were also examined between the right and left sides, and between the paracoronal and parasagittal sides. Results: The mean thickness of the RGF in all subjects was $0.75{\pm}0.39mm$; there was no significant difference in thickness between male ($0.78{\pm}0.36mm$) and female ($0.72{\pm}0.30mm$). We found no correlation between age and the mean thickness of the RGF, when age was grouped by decade. However, when subjects were divided into >40 years and ${\leq}40years$ age groups, the thickness of the RGF was significantly different between the groups. Conclusions: We found that the thickness of the RGF did not differ by sex, but might be affected by aging. Further studies with larger numbers of subjects are needed to confirm the results of this study.

Biological Activity of Recombinant Human Erythropoietin (EPO) In Vivo and In Vitro

Park Jong-Ju,Lee Hyen-Gi,Nam In-Suk,Park Hee-Ja,Kim Min-Su,Chung Yun-Hi,Naidansuren Purevjargal,Kang Hye-Young,Lee Poong-Yun,Park Jin-Gi,Seong Hwan-Hoo,Chang Won-Kyong,Kang Myung-Hwa 한국동물번식학회 2005 Reproductive & developmental biology Vol.29 No.2

The hematopoietic growth factor erythropoietin (EPO) is required for the maintenance, proliferation, and differentiation of the stem cells that produce erythrocytes. To analyse the biological activity of the recombinant human EPO (rec-hEPO), we have cloned the EPO cDNA and genomic DNA and produced rec-hEPO in the CHO cell lines. The growth and differentiation of EPO-dependent human leukemic cell line (F36E) were used to measure cytokine dependency and in vitro bioactivity of rec-hEPO. MIT assay values were increased by survival of F36E cells at 24h or 72h. The hematocrit and RBC values were increased by subcutaneous injection of 20 IU (in mice) and 100IU(in rats) rec-hEPO. Hematocrit values remarkably increased at 13.2% (in mice) and 12.2% (in rats). The pharmacokinetic behavior with injection of 6 IU of rec-hEPO remained detectable after 24 h in all mice tested. The highest peat appeared at 2h after injection. The long half-life of rec-hEPO is likely to confer clinical advantages by allowing less frequent dosing in patients treated for anemia. These data demonstratethat ree-hEPO produced in this study has a potent activity in vivo and in vitro. The results also suggest that biological activity of ree-hEPO could be remarkably enhanced by genetic engineering that affects the potential activity, including mutants with added oligosaccharide chain and designed to produce EPO-EPO fusion protein.

Biological Activity of Recombinant Human Erythropoietin (EPO) In Vivo and In Vitro

Park Jong-Ju,Lee Hyen-Gi,Nam In-Suk,Park Hee-Ja,Kim Min-Su,Chung Yun-Hi,Naidansuren Purevjargal,Kang Hye-Young,Lee Poong-Yun,Park Jin-Gi,Seong Hwan-Hoo,Chang Won-Kyong,Kang Myung-Hwa 한국동물생명공학회(구 한국동물번식학회) 2005 Reproductive & Developmental Biology(Supplement) Vol.29 No.2s

The hematopoietic growth factor erythropoietin (EPO) is required for the maintenance, proliferation, and differentiation of the stem cells that produce erythrocytes. To analyse the biological activity of the recombinant human EPO (rec-hEPO), we have cloned the EPO cDNA and genomic DNA and produced rec-hEPO in the CHO cell lines. The growth and differentiation of EPO-dependent human leukemic cell line (F36E) were used to measure cytokine dependency and in vitro bioactivity of rec-hEPO. MIT assay values were increased by survival of F36E cells at 24h or 72h. The hematocrit and RBC values were increased by subcutaneous injection of 20 IU (in mice) and 100IU(in rats) rec-hEPO. Hematocrit values remarkably increased at $13.2\%$ (in mice) and $12.2\%$ (in rats). The pharmacokinetic behavior with injection of 6 IU of rec-hEPO remained detectable after 24 h in all mice tested. The highest peat appeared at 2h after injection. The long half-life of rec-hEPO is likely to confer clinical advantages by allowing less frequent dosing in patients treated for anemia. These data demonstratethat ree-hEPO produced in this study has a potent activity in vivo and in vitro. The results also suggest that biological activity of ree-hEPO could be remarkably enhanced by genetic engineering that affects the potential activity, including mutants with added oligosaccharide chain and designed to produce EPO-EPO fusion protein.