철도교통소음의 수평·수직적 전달 및 감쇠 특성

최형일,정원삼,김난희,강영주,위환 조선대학교 환경공해연구소 2006 環境公害硏究 Vol.19 No.1

This study has been conducted to achieve the following objectives: First, in order to understand the horizontal propagation and attenuation characteristics for the railroad traffic noise, we selected actively developed areas within 100 meters away from the road to measure the level of traffic noise near a road. To measure the noise near a railroad, we selected areas within 100 meters away from the railroad and then selected Saemaul-ho and Mugoongwha-ho as the subjects for our experiment, In this way, we analyzed the horizontal propagation and attenuation characteristics for the traffic noise occurring in diversified areas. Second, in order to understand the vertical propagation and attenuation characteristics for the railroad traffic noise, we measured and analyzed the distributional characteristics of vertical sound pressure levels on each floor of multi-storied apartment buildings according to changes of traffic load and types, and the existence or nonexistence of soundproof walls. For the case of the railroad traffic noise, we also selected Samaul-ho and Mugoongwha-ho as the subjects for our experiment, and we measured and analyzed the different noise levels on each floor of multi-storied apartment buildings from the soundproof wall. The results of Horizontal propagation and attenuation characteristics for the railroad traffic noise are as follows: In cases of the flat land, cutting land, and bridge area, as distance increases, the sound pressure level steadily decreases. The cutting land has an especially high distance decrease compared to the other areas, and the sound pressure level for the bridge area is higher than that of the flat land with a measurement of 9.7~17.5㏈(A). Vertical propagation and attenuation characteristics for the railroad traffic noise are as follows: The amount of sound pressure level decrease is 13.9~15.4㏈(A) for Samaul-ho and 10.9~11.5㏈(A) for Mugoongwha-ho when measuring the vertical sound pressure levels at heights lower than 4.5m, which indicates a fairly large decrease. At 6m, the amount of decrease is 7.3㏈(A) for Samaul-ho and 5.0㏈(A) for Mugoongwha-ho, which indicates a small decrease.

Association between cardiac arrhythmia before pregnancy and gestational diabetes: a nationwide population-based study in Korea

You-Jung Choi(You-Jung Choi),Won Young Wi(Won Young Wi),Geum Joon Cho(Geum Joon Cho),Jin Oh Na(Jin Oh Na) 한국역학회 2023 Epidemiology and Health Vol.45 No.-

Given the higher prevalence of cardiac arrhythmias in individuals with diabetes, we investigated the relationship between cardiac arrhythmias and the incidence of gestational diabetes (GDM). This retrospective cohort study utilized data from the Korean Health Insurance Service database, encompassing 1,113,729 women who gave birth between January 2007 and December 2015. After excluding those who did not undergo National Health Screening tests within 1 year prior to pregnancy, those with multifetal pregnancies, and those diagnosed with diabetes, we analyzed 365,880 singleton pregnancies without a history of diabetes. Of these, 3,253 (0.9%) had cardiac arrhythmias, including premature extra beats, supraventricular tachyarrhythmias, and/or atrial flutter/fibrillation. GDM occurred in 31,938 (8.7%) subjects during pregnancy, and was more prevalent in women with cardiac arrhythmia than in those without (14.9 vs. 8.7%, p<0.001). In the multivariate analysis, the association between cardiac arrhythmia and GDM remained statistically significant (adjusted odds ratio, 1.78; 95% confidence interval, 1.61 to 1.97; p<0.001). Subgroup analysis revealed that the risk of GDM was consistently statistically significant in subjects with cardiac arrhythmia, regardless of age, body mass index, and the presence or absence of chronic hypertension. Therefore, cardiac arrhythmias before and during pregnancy appear to be associated with an increased risk of developing GDM.

Trends in Gallbladder Cancer Incidence and Survival in Korea

Wi, Youngjun,Woo, Hyeongtaek,Won, Young-Joo,Jang, Jin-Young,Shin, Aesun Korean Cancer Association 2018 Cancer Research and Treatment Vol.50 No.4

<P><B>Purpose</B></P><P>The current study was undertaken to examine the trend in gallbladder cancer (GBC) incidenceand survival in Korea.</P><P><B>Materials and Methods</B></P><P>GBC incidence data by histologic typewere obtained from the Korea Central Cancer Registry.Age-standardized incidence rates were calculated using the mid-year Korean population of2000 as a standard population, and a joinpoint regression model was used to calculate theannual percent change (APC) in incidence rates. Incidence by Surveillance, Epidemiology and End Results (SEER) summary stage and by geographical areas and female-to-male incidencerate ratios was also described.</P><P><B>Results</B></P><P>The number of new GBC cases increased between 1999 and 2013. Nevertheless, the agestandardizedincidence rate decreased by 0.5% per year in men (p < 0.01), whereas theincidence rate in women did not change significantly over the same period (APC, –0.2;p=0.59). The most common histologic type was adenocarcinoma in both sexes. Based onthe SEER stage, the distant stage was the most frequent stage (41%), followed by theregional stage (37%). Ulsan (4.31/100,000 for men and 4.09/100,000 forwomen in 2009-2013) and Gyeongsangnam-do (4.15/100,000 for men and 3.54/100,000 for women)showed the highest GBC incidence, whereas the lowest incidence was observed in Seouland Gyeonggi-do. There were no significant sex differences in the incidence of GBC (femaleto-maleincidence rate ratio, 0.96).</P><P><B>Conclusion</B></P><P>The overall incidence of GBC in Korea did not change significantly over the 15-year period.Incidence for men and women was similar. However, geographical variation was found.</P>

Prediction of Contrast-Induced Nephropathy With Persistent Renal Dysfunction and Adverse Long-term Outcomes in Patients With Acute Myocardial Infarction Using the Mehran Risk Score.

Wi, Jin,Ko, Young-Guk,Shin, Dong-Ho,Kim, Jung-Sun,Kim, Byeong-Keuk,Choi, Donghoon,Ha, Jong-Won,Hong, Myeong-Ki,Jang, Yangsoo Foundation for Advances in Medicine and Science [e 2013 Clinical cardiology Vol.36 No.1

<P>Contrast-induced nephropathy (CIN) has been generally considered to be transient and associated with unfavorable clinical outcomes.</P>

일부 한국 성인 남성의 생활습관 요인과 고혈압 유병 상태의 관련성

소위영 ( Wi Young So ),전태원 ( Tae Won Jun ),최대혁 ( Dai Hyuk Choi ),윤용진 ( Yong Jin Yoon ),김병민 ( Byung Min Kim ),서한교 ( Han Kyo Seo ),엄우섭 ( Woo Soeb Eom ),김경래 ( Kyeong Lae Kim ),박성태 ( Sung Tae Park ),장혁기 ( Hy 대한스포츠의학회 2009 대한스포츠의학회지 Vol.27 No.2

This study was to examine the relationship between lifestyle factors and hypertension in Korean men. The subjects were 1,938 men aged 20 to 79 yr who visited health promotion center for medical check during 2004-2008. The diagnosis of hypertension was defined by JNC7 report. The prevalence of hypertension was 23.3% in this study population. Multivariate logistic regression demonstrated that the odds ratio (95% CI) of hypertension across age groups were 2.40 (1.42-4.09) for forties, 3.64 (2.16-6.12) for fifties, 6.43 (3.80-10.88) for sixties, 5.80 (2.96-11.38) for seventies compared to the twenties. Also, compared with normal group, the odds ratio (95% CI) of hypertension in over-weight and obese groups were 2.94 (2.11-4.09) and 3.70 (2.70-5.07), respectively. The odds ratio (95% CI) of hypertension in those who were drinking one or two times per week and three times per week were 1.33 (1.03-1.72) and 2.33 (1.67-3.22), respectively, compared with non-drinker group. It is concluded that the significant risk factors of hypertension were age, BMI, and alcohol-drinking among Korean men. However, smoking, exercise, and diet were not related to the risk of hypertension.

폐렴 구균(Streptococcus pneumoniae)에 의한 척수 경막외 농양 1예

이지영,위유미,손경목,기현균,문치숙,오원섭,백경란,송재훈 대한감염학회 2004 감염과 화학요법 Vol.36 No.6

폐렴구균은 보통 폐렴이나 뇌막염을 일으키는 균으로 척수 경막외 농양을 일으키는 경우는 매우 드물다. 본 저자들은 폐렴 구균에 의한 척수 경막 외 농양을 경험하여 보고하는 바이다. 과거 건강했던 36세 남자 환자로 사다리에서 낙상한 후 요통 및 고열, 신경학적 이상으로 내원하여 자기 공명 촬영 결과 척수 경막 외 농양으로 진단받고 항균제 투여와 함께 응급 수술을 시행하였다. 농 배양 결과 페니실린 감수성인 폐렴 구균이 분리 되었고, 수술 요법과 항생제 투여 후 농양은 치유되었으나 신경학적 이상은 호전 없는 상태로 타원으로 전원되었다. Pneumonia and meningitis are the most frequent manifestations of pneumococcal infections. Pneumococcal spinal epidural abscesses have been rarely reported. Spinal epidural abscess by Streptococcus pneumoniae has been diagnosed among the patients with diabetes mellitus, alcoholism, corticosteroid therapy, intravenous drug use, chronic renal failure, AIDS, and history of spinal surgery. Recently, we experienced a case of pneumococcal spinal epidural abscess after spinal trauma. A 36-year-old male patient was admitted with back pain, fever, and paraplegia which occurred 5 days after the trauma. Spine MRI revealed spinal epidural abscess at the level from T2 to T9. He was treated with antimicrobial agents and surgical exploration for spinal epidural abscess. Pus culture grew S. pneumoniae which was susceptible to penicillin. Despite early surgical treatment, neurologic sequelae remained. Considering the high mortality and morbidity of pneumococcal spinal epidural abscess, early diagnosis and aggressive treatment including surgical intervention and antibiotics therapy should be implemented immediately.

비만 중년여성에게 있어서 36주간의 스트레칭 운동의 효과

소위영 ( Wi Young So ),전태원 ( Tae Won Jun ),최대혁 ( Dai Hyuk Choi ),서한교 ( Han Kyo Seo ),엄우섭 ( Woo Soeb Eom ),장혁기 ( Hyuk Ki Chang ),서동일 ( Dong Il Seo ),김선호 ( Seon Ho Kim ),신현정 ( Hyun Jung Shin ),박재영 ( Jae Yo 대한스포츠의학회 2008 대한스포츠의학회지 Vol.26 No.2

Because obese people have the characteristic of physical inactivity, they need to be exercised on the basis of cumulative overload. Therefore, the protocol should include low intensity of flexible exercise which can be applicable easily to obese people. The purpose of this study was to examine the effects of stretching exercise. Obese middle-aged women participated in this study consisting of stretching exercise group (N=23) and control group (N=27). They were subjected to 36 weeks stretching exercise three times a week, weight, BMI(Body Mass Index), body fat, WHR (Waist-Hip Ratio), SBP (Systemic Blood Pressure), DBP (Diastolic Blood Pressure), RHR (Resting Heart Rate), glucose, TC (Total Cholesterol), HDL (High Density Lipoprotein) and TG (Triglyceride) were investigated. There were significant differences between two groups in weight (p<0.001), BMI (p<0.001), body fat (p<0.001), WHR (p<0.001), SBP (p=0.015), DBP (p=0.003), RHR (p=0.046), glucose (p<0.001), TC (p=0.049), HDL (p=0.001) and TG (p<0.001). These findings suggest that stretching exercise could be considered adequate form of exercise for the purpose of obesity treatment.

기공 운동이 비만인의 건강관련 삶의 질(SF-36)과 심리적 요인에 미치는 영향

소위영(Wi-Young So),서한교(Han-Kyo Seo),최대혁(Dai-Hyuk Choi),신현정(Hyun-Jung Shin),조은효(Eun-Hyo Cho),유병욱(Byoung-Wook Yoo),전태원(Tae-Won Jun) 한국노년학회 2010 한국노년학 Vol.30 No.1

많은 비만인들은 사회적인 편견과 차별로 인하여 신체상에 대한 불만족, 우울, 불안 및 정서장애를 경험하고 있으며, 더 나아가 건강과 관련된 삶의 질의 저하를 나타내고 있다. 이러한 비만인들의 정신적 고통을 개선하기 위하여 운동요법은 하나의 긍정적인 치료 방법으로 권장되고 있다. 본 연구는 동양의 전통 운동형태 중 기공 운동이 비만인에게 건강관련 삶의 질(SF-36), 자기효능감, 우울, 불안, 피로의 심리적 요인에 어떠한 효과를 나타내는지를 살펴봄으로써 비만인을 위한 운동처방 지침을 제공하고자 한다. 본 연구의 피검자는 S시 G구에 소재한 S대학교 골든웰빙 운동프로그램에 참가하는 50-60대의 성인으로 통제군 16명, 운동군 17명으로 분류하였다. 기공 운동은 12주 동안 주2회의 빈도로 실시하여, 운동 전ㆍ후로 건강관련 삶의 질(SF-36), 신체적 자기효능감, 우울, 불안, 피로도 변인을 측정하였다. 12주간의 기공 운동 전 후 건강관련 삶의 질(SF-36)의 8항목 중 감정역할 제한(F=0.187, p=0.668), 정신건강(F=2.043, p=0.163)은 집단 간의 유의한 차이를 나타내지 못하였으나, 신체기능(F=15.151, p<0.001), 신체역할 제한(F=18.278, p<0.001), 사회적 기능(F=4.957, p=0.033), 활력/피로(F=11.485, p=0.002), 신체통증(F=6.623, p=0.015), 일반적인 건강(F=4.498, p=0.042)의 6가지 변인은 집단 간의 유의한 차이를 나타내었다. 불안(F=0.631, p=0.433)은 집단 간의 유의한 차이를 나타내지 못하였으나, 신체적 자기효능감(F=6.124, p=0.019), 우울(F=5.109, p=0.031), 피로(F=7.998, p=0.008)의 3가지 변인은 집단 간의 유의한 차이를 나타내었다. 비만인에게 있어서 기공 운동은 비록 느린 동작으로 수행되는 낮은 강도의 운동형태일지라도 운동자체가 가져다주는 정신 심리적인 개선효과가 분명하게 나타나는 운동임을 본 연구를 통하여 확인할 수 있었다. Obese people experience dissatisfaction of body, depression, anxiety, and emotional disturbance by social prejudice and discrimination, further they represent decline of health-related quality of life. Exercise therapy is recommended as one of the positive treatments to improve the emotional pain of obese people. This study is to provide guideline of exercise prescription for obese people by investigating the effects of qigong exercise on psychological factors such as health-related quality of life (SF-36), self-efficiency, depression, anxiety, and fatigue in obese people. The subjects of this study were 50~60s adults participated in Golden-Wellbeing program at S university in G gu of S city and were devided into exercise (N=17) and control (N=16) group. Qigong exercise was performed twice per week for 12 weeks and SF-36, self-efficiency, depression, anxiety, and fatigue were measured before and after 12 weeks of exercise. In the 8 items of SF-36 before and after 12 weeks of qi-gong exercise, there was no significance in role limitation-emotional (F=0.187, p=0.668), mental health (F=2.043, p=0.163) between groups, but there was significance in physical functioning (F=15.151, p<0.001), role limitation-physical (F=18.278, p<0.001), social functioning (F=4.957, p=0.033), vitality (F=11.485, p=0.002), bodily pain (F=6.623, p=0.015), and general health (F=4.498, p=0.042) between groups. Also, anxiety (F=0.631, p=0.433) was not significant, whereas self-efficiency (F=6.124, p=0.019), depression (F=5.109, p=0.031), fatigue (F=7.998, p=0.008) was significant between groups. Even though qigong is slow motion and low intensity of exercise, it was found that qi-gong has exercise effect which induces mental and psychological improvement through this study.

통합시험을 위한 자동 시험일지 기록프로그램 설계 및 구현

정영환(Young-hwan Jeong ),이원식(Won-sik Lee),위성혁(Soung-hyouk Wi) 한국정보과학회 2017 한국정보과학회 학술발표논문집 Vol.2017 No.06

수동 스너버 회로가 적용된 플라이백 컨버터의 1차 측 제어 기법

김위민(Wi-Min Kim),임경섭(Gyeong-Seop Lim),이상원(Sang-Won Lee),조영균(Young-Kyun Cho) 전력전자학회 2023 전력전자학술대회 논문집 Vol.2023 No.7