수위와 지진을 고려한 제방의 액상화에 대한 복합재해 취약도 곡면 작성

황지민,조성은,Hwang, Ji-Min,Cho, Sung-Eun 한국지반공학회 2018 한국지반공학회논문집 Vol.34 No.6

지반의 액상화는 지진 피해의 대표적인 형태 중 하나이다. 이는 막대한 인적 경제적 피해를 줄 수 있는 현상으로, 지반구조물의 설계 전 필수적으로 검토해야 하는 대상이다. 본 연구에서는 하천 제방을 대상으로 임의의 지진 규모와 수위에서 액상화에 대한 실용적인 복합재해 취약도 곡면 작성법을 제시하였다. 지반의 파괴 정도를 나타내는 액상화 가능 지수(LPI)로 제방의 액상화에 대한 한계상태를 정의하였다. 지반 물성치의 불확실성을 고려하기 위해 Monte Carlo Simulation 기반의 확률론적 해석을 수행하였고, 해석 결과를 바탕으로 임의 수준의 수위와 지진 규모에 대하여 액상화에 의한 파괴확률을 나타내는 3차원의 취약도 곡면을 작성하였다. 작성된 복합재해 취약도 곡면은 홍수 및 지진에 대한 제방의 안전성 평가와 취약지역에 대한 위험도 평가에 사용될 수 있다. Soil liquefaction is one of the types of major seismic damage. Soil liquefaction is a phenomenon that can cause enormous human and economic damages, and it must be examined before designing geotechnical structures. In this study, we proposed a practical method of developing a multi-hazard fragility surface for liquefaction of levee considering earthquake magnitude and water level. Limit state for liquefaction of levee was defined by liquefaction potential index (LPI), which is frequently used to assess the liquefaction susceptibility of soils. In order to consider the uncertainty of soil properties, Monte Carlo Simulation based probabilistic analysis was performed. Based on the analysis results, a 3D fragility surface representing the probability of failure by soil liquefaction as a function of the ground motion and water level has been established. The prepared multi-hazard fragility surface can be used to evaluate the safety of levees against liquefaction and to assess the risk in earthquake and flood prone areas.

현행 노인장기요양보험제도에 대한 치과위생사의 인식 및 요구

황지민 ( Ji Min Hwang ),박용덕 ( Yong Duk Park ) 대한예방치과·구강보건학회 2009 大韓口腔保健學會誌 Vol.33 No.3

Objectives: The purpose of this study is to identify and analyze the dental hygienists` supports and demands regarding the Long-term Senior Care Insurance System, which has been enforced since July 2008. This system was expected to go through trials and errors, so that it can provide reference materials with which to formulate a new LSCI System for oral health and contribute to improving the effectiveness of this system. Methods: This study was used a formulated self-administered questionnaire form to survey dental hygienists working in Seoul and the adjacent metropolitan areas from January to April 2009. As a result, this study collected a total of 259 completed questionnaire forms. All the collected survey data was processed using SPSS ver 12.0 for the data analyses such as frequency analysis, descriptive statistics, independent t-test and one-way ANOVA, in addition to using Pearson`s correlation coefficient to determine any potential correlations among the variables. Results: It was found that 50.6% of the respondents replied that they knew just the name of the LSCI System, but only 4.2% respondents knew about the detailed coverage of the LSCI System. This study used a 5-point scale to survey the dental hygienists` needs for the LSCI System. It was found that our respondents scored the highest mean points (3.96) in favor of enforcing the LSCI System, while scoring the lowest mean points (3.08) in favor of an extra premium payable under the LSCI system. According to the analysis for the potential correlations between the needs for the LSCI System and the related variables, it was found that the standard of the LSCI System for the disabled was positively correlated with favoring the enforcement of the LSCI system (r=.213) (p<0.001). Conclusions: It is concluded that dental hygienists have very low awarenss about the overall matters of the current LSCI system, but most of them showed positive utews about the LSCI system and the wider range of bhowfits from it. Thus, it is em,ortant that our government should eventually prepare a public relation program suitable for public of thepersonnel in the interest of the LSCI system`s stable establishment and aem sation. Furthermore, policyof torts needs to be made to extend the coverage into a gortter, ortion of the ppoulation, including the disabled, so that the LSCI System will be successfullyofstablished as substantial national system based on national trust and peace of mind.

군인의 나트륨 섭취와 나트륨 줄이기 관련 지식 및 실천에 관한 연구

황지민(Ji Min Hwang),민성희(Sung Hee Min),이민준(Min June Lee) 동아시아식생활학회 2016 동아시아식생활학회지 Vol.26 No.6

일부지역 초등학생 학부모의 치면열구전색에 관한 만족도

황지민 ( Ji Min Hwang ),한지형 ( Ji Hyoung Han ) 한국치위생과학회 2009 치위생과학회지 Vol.9 No.4

한국 치위생과 학생의 치열궁 크기 및 형태와 교합

황지민 ( Ji Min Hwang ),이춘선 ( Chun Sun Lee ),한지형 ( Ji Hyoung Han ) 한국치위생과학회 2014 치위생과학회지 Vol.14 No.3

The purpose of this study was to examine the size, form of dental arch and occlusion type in college students in our country and the relationship of the factors. The subjects in this study were 210 selected dental hygiene students. The collected data were analyzed by a statistical package PASW 18.0. When their size, form and occlusion of dental arch were analyzed, the inter-canine width of the maxillary was 34.38 mm, and theinter-first molar width was 52.05 mm. The canine depth was 8.60 mm, and the first molar depth was 28.69 mm. As for the mandibular, theinter-canine width was 26.42 mm, and the inter-first molar width was 44.83 mm. The canine depth was 5.54 mm, and the first molar depth was24.38 mm. Concerning the form of dental arch, the percentage of normal dental arch in the maxillary stood at 29.0, and that of crowding stood at 60.5. The percentage of spacing stood at 10.5. In the case of the mandibular, the percentage of normal dental arch stood at 29.0; crowding, 55.7; and spacing, 15.2. In relation to occlusion, the percentage of normal occlusion stood at 16.7. As to malocclusion, class I that accounted for55.7 was most common, and class II and class III respectively accounted for 20.5 and 7.1. When the size of dental arch was compared according to the form and occlusion of it, dental arch was largest (45.95 mm) in size when the form of dental arch in the inter-first molar width of the mandibularwas spacing. The size of dental arch was 44.73 mm when its form in the same region was normal, and that was 44.58 mm when its form in the same region was crowding (p=0.032). Regarding the relationship between the form and occlusion of dental arch, crowding was most common when there were class I, II and III of malocclusion both in the maxillary and mandibular.

서울시 상수도가압장 유휴공간 유형별 활용특성 분석

황지민(Hwang, Ji-Min),김주원(Kim, Ju-Won) 대한건축학회 2022 대한건축학회 학술발표대회 논문집 Vol.42 No.2

치과 내원 환자들 중 흡연환자의 스트레스 정도 및 스트레스 관련 요인 분석

황지민 ( Ji Min Hwang ),권하정 ( Ha Jeong Kwon ),박용덕 ( Yong Duk Park ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.3

Objectives. The purpose of this study was to examine the relationship of smoking to stress and related factors, which shouldn`t be overlooked in today`s society where quitting smoking was emphasized to improve the quality of life and health. Methods. The subjects in this study were clinical patients at six selected dental hospitals in and around Seoul. which involved one each from the southern and northern areas of Gyeonggi Province, one from Incheon and three from Seoul. There were more than 20 new patients in the selected dental hospitals on a daily basis, and the patients developed oral diseases due to smoking. This study was conducted for three months from January to March, 2010. The collected data were analyzed with a SPSS 14.0 program, and a frequency analysis, Pearson correlation coefficient and factor analysis were utilized to serve the purpose. Results. They got a mean of 80.03 out of possible 100 points in stress provoked by smoking. When the correlation among the smoking-related stress, stressors and stress-coping cost was investigated, there was a significant correlation on the whole. Out of eight smoking-related stressors, the closely related variables were categorized and simplified into three. Conclusions. The smoker dental patients were under heavy stress because of smoking, as they got 80.03. It seems to indicate that smoking is followed by distress such as anxiety or stress rather than eustress.

일부지역 고등학생의 구강건강증진행위에 관한 조사

황지민 ( Ji Min Hwang ),한지형 ( Ji Hyoung Han ) 한국치위생과학회 2009 치위생과학회지 Vol.9 No.2

한국 청소년의 구강건강행위와 사회,인구학적 특성과 연관성

황지민 ( Ji Min Hwang ),성정민 ( Jeong Min Seong ),김지현 ( Ji Hyun Kim ),유수민 ( Su Min Yoo ),박용덕 ( Yong Duk Park ) 대한예방치과·구강보건학회 2009 大韓口腔保健學會誌 Vol.33 No.3

Objectives: This study examined the oral health behavior and demographic characteristics of adolescents in order to provide information on how to disseminate the correct oral health behavior to youth and develop programs for that approach. Methods: The raw data of `The Third 2007 Youth Health Behavior Online Survey` carried out by the Korea Center for Disease Control and Prevention were analyzed. All survey data collected was processed using SPSS ver 12.0 for data analyses such as frequency analysis, independent t-test, one-way ANOVA and chi-square. Results: The demographic characteristics of the adolescents investigated revealed significant differences in their oral health behavior(p<0.001). In particular, there were significantly difference in toothbrushing according to gender and grade(p<0.001). In addition , there were significant differences in the frequency of visiting a dental clinic between genders, grades, residential areas(urban/rural) and types of school(p<0.001). There were significant differences between grades, residential areas and types of school in terms of whether they had received preventive dental treatment (p<0.001). Conclusions: Adolescents who were in the lower grades, female and dwelled in large urban communities visited dental clinics more and received more preventive dental treatment. On the other hand, those who resided in small urban and rural areas visited dental clinics less often and received less preventive dental treatment. These result highlight the need for the further development and spread of oral health programs.

흡연원인 구강질환 관점에서 추계한 사회경제적 비용

황지민 ( Ji Min Hwang ),김응권 ( Eung Gwon Kim ),조영식 ( Young Sik Cho ),박용덕 ( Yong Duk Park ) 대한예방치과·구강보건학회 2010 大韓口腔保健學會誌 Vol.34 No.4

Objectives. The purpose of this study was to examine the types of oral diseases possibly caused by smoking and to estimate the socioeconomic costs of individual patients on the smoking-caused oral diseases. Methods. For this study we selected 6 places of dental hospital level in Seoul and Metropolitan Area, and targeted total 236 clinical patients whom dentist recognizes among patients of complaining of oral-disease incidence caused by smoking from January 2010 to July. Results. Among the oral diseases caused by the factor of smoking, periodontal diseases accounted for 40.7 percent, which was the highest percentage. And periodontal diseases required the greatest outpatient medical fee and direct/ indirect cost, and smoking cost linked to the diseases were highest as well. Conclusions. The direct and indirect cost of the smoking-caused periodontal diseases were highest, which came to 16,684,269 won. So the government should try to push ahead with more aggressive and efficient antismoking policies to promote national oral health, to relieve the burden of medical fee and ultimately to ensure national economic growth and wellbeing.