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이현철,유호종,김진섭,함성호,신장규,이종현,이정희,권성원,박세일 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1
A planar Bi-Sb multijunction thermal converter for the precise measurements of ac voltage and current has been fabricated and its characteristics was discussed. In order to convert ac power into heat, a bifilar thin film Pt-heater, which could cancel its Thomson and Peltier effects, was prepared on the Si_(3)N_(4)/SiO_(2)/Si_(3)N_(4) diaphragm for the thermal isolation between heater and silicon substrate. To convert the temperature or the heat generated by the heater into dc voltage and current, hot and cold junctions of the Bi-Sb thermopile, which has a large difference in Seebeck coefficients, were formed on the dielectric diaphragm and the silicon substrate, respectively. The respective thermal sensitivity of the thermal converter with a bifilar heater was about 10.1 mV/mW and 14.8 mV/mW in the air and vacuum, which is about eight times higher than that of commercial 3-dimensional thermal converter. In the case of ac 2 V-input voltage, the ac-dc voltage transfer difference was about ±2.0 ppm, and in the case of ac 10 mA-input current, the ac-dc current transfer difference was about ± 0.6 ppm, in the frequency range from 10 Hz to 10 kHz.
서호석,유철인,이충렬,이지호,김양호,이원신,최지호,성경제,고재경,문기찬 大韓産業醫學會 2002 대한직업환경의학회지 Vol.14 No.4
목적: 울산지역에 소재한 대규모 조선업종 근로자 1,419명을 대상으로 족부백선의 유병률을 조사하고 족부백선의 유병률에 미치는 요인을 조사하여 족부백선의 작업관련성을 알고자 본 연구를 실시하였다. 방법: 근로자 건강진단시 족부백선의 유뮤를 확인하고, 현재 족부백선의 위험인자로 알려져 있는 여러 요인들과 작업, 환경적인 요인들에 대하여 설문조사를 실시하고, 족부백선의 임상적인 양상을 관찰하였다. 결과: 조사결과 족부백선의 유병률은 54.8%로 높게 나타났으며, 직종과 공동목욕탕 이용 유무, 안전화 착용유무, 작업형태, 가족력 유무가 족부백선이 유병률에 영향을 미치는 위험인자로 나타났으나, 다변량 분석결과 가족력과 공동목욕탕 이용만이 통계적으로 유의한 위험인자로 나타났으며(P<0.05), 안전화 착용은 통계적으로 유의하지 않았다. 결론: 이상의 결과에서 사업장내 근로자들의 족부백선의 높은 유병률과 관련된 직접적인 요인은 사업장내의 공동 목욕탕의 이용 여부와 족부백선의 가족력임을 확인할 수 있었으며, 많은 근로자들이 원인으로 지목한 안전화의 착용은 통계적인 유의성은 없었다. 따라서 족부백선이 작업과 직접적으로 관련되었다는 근거는 적은 것으로 보인다. 하지만 일반인보다 높은 유병률을 보이는 것으로 확인된 사업장내 족부백선의 유병률을 감소시키기 위해서는 위험인자로 최종 확인된 작업장 내의 공동 목욕탕의 철저한 위생관리와 함께 가족간의 감염을 예방히기 위한 개인위생관리가 필요하면, 비록 통계적인 유의성은 없었으나 여러 근로자들이 원인으로 지목한 안전화의 개선에도 노력해야 할 것으로 생각한다. Objectives: Recently, tinea pedis has been reprted to be a type of occupational dermatoses because of its high prevalence in specific working conditions. Although there is no doubt that the environment surrounding work places, the usual habits of workers erc ate intimately related to this skin conditions, there is some controversu as to whether or not this condition is a real occupational illness and what is the exact cause of the high prevalence of this illness is. In this study, the prevalence of tinea pedis in workers from the shipbuilding industry was investigated andthe risk factors of this disease were evaluated. This study also aimed to verify whether or not tinea pedis is one of the occupational diseases. Methods: The result of interviews, questionnaires and clinical findings from 1,419 workers who visited the occupational health center for an annual routine check for their health state were analyzed. Results: Among the 1,419 workers, 778 workers (54.8%)had tinea pedis. By simple logistic regression analysis, the prevalence of tinea pedis was found to e affected by some variables, including the jov category, the types of work, the kinds of footwear, whether or not they were using communal baths in the work places, and a family history of tinea pedis. In contrast, by multiple logistic regression analysis, only utilization of the communal baths in the work places and a family history of tinea pedis turned out to be statistically significant risk facrors. Conclusions: In this study, the major factors contributing to the high prevalence of tinea pedis are the use of communal baths in the workplace and a positive family history. However, the wearing of safety shoes was not statistically significant. Therefore, tinea pedis could not be confirmed to be an occupational disease. On the basis of these results, a solution to the environmental hygiene of communal bats and the personal hugiene of individuals needs to be improved in order to prevent tinea pedis.
신철호 ( Cheol Ho Sin ),김남아 ( Nam A Kim ),고병우 ( Byeong Woo Go ),김성민 ( Kim Seong Min ),이재동 ( Jae Dong Lee ),박종혁 ( Jong Hyuk Park ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.2
오늘날 전세계의 사람이 이용하는 SNS 상에 존재하는 보안 위협은 정보주체의 개인정보를 유출하고 스팸, 피싱 등의 2 차 피해를 야기하는 등 치명적인 결과를 초래한다. 본 논문에서는 잊혀질 권리와 SNS의 개념을 파악하고 SNS 상에 존재하는 보안 위협에 대해 논의하며 보안 위협을 해소하고 SNS 환경에서의 잊혀질 권리를 실현할 수 있는 UPP, Dual Watermarking Scheme, FaceCloak 등 기술적 방안을 제시한다.
신성철 ( Sin Seong Cheol ),김윤구 ( Kim Yun Gu ),백현정 ( Baeg Hyeon Jeong ),임영환 ( Im Yeong Hwan ),여호명 ( Yeo Ho Myeong ),김응호 ( Kim Eung Ho ),김정아 ( Kim Jeong A ),이방훈 ( Lee Bang Hun ),강우헌 ( Kang U Heon ),김범 ( Ki 대한신장학회 2003 Kidney Research and Clinical Practice Vol.22 No.3
A 21-year-old male was presented with sudden headache, fever, petechiae and neck stiffeness. The diagnosis of meningococcal meningitis was confirmed by examination of cerebrospinal fluid. The clinical symptoms of the illness were improved after treatment of antibiotics. However the paient developed generalized edema, oliguria, azoternia, and heavy proteinuria in the recovery phas of illness. Low serum C3 level was also noted. A kidney biopsy was perfromed and showed the features of postinfectious glomerulonephritis and typical subepithelial humps on electron-microscopic examination. His sysmptoms and laboratory findings were improved, and C3 level re turned to normal range after conservative treatment. We suggest that a complement deficiency should be reled out in patients of glomerulonephritis developed during the recovery phase of meningococcal men ingitis. C3 nephritic factor detection and renal biopsy should be carefully considered in these patients. (Korean J Nephrol 2003;23(3):321-325
포스터 발표 : 포스터 연제 ; 한국인에서의 Endothelial Nitric Oxide Synthase의 유전적 다형성과 당뇨병성 신중과의 관계
신영신 ( Sin Yeong Sin ),백상흥 ( Baeg Sang Heung ),박철휘 ( Park Cheol Hwi ),고윤호 ( Go Yun Ho ),장기욱 ( Jang Gi Ug ),승기배 ( Seung Gi Bae ),장윤식 ( Jang Yun Sig ),최규보 ( Choe Gyu Bo ),방병기 ( Bang Byeong Gi ) 대한신장학회 2000 춘계학술대회 초록집 Vol.19 No.2
신병호 ( Sin Byung Ho ),김상우 ( Kim Sang Woo ),황인성 ( Hwang Yin Seong ),전충근 ( Jeon Chung Keun ),신병철 ( Sin Byung Cheol ),한천구 ( Han Cheon Goo ) 한국구조물진단유지관리공학회 2001 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.5 No.2
In this paper, tests are carried out in order to estimate the compressive strength of concrete at early age based on the relationships between rebound number of P type schmidt hammer and compressive strength. According to test results, estimation eguation of compressive strength derived from rebound number is determined F<sub>c</sub>=6.5R<sub>n</sub>-75,which having more than 0.9 of correlation coefficient. It is very effective method to determine frost damage at early age and removal time of the forms, if the estimation equation of compressive strength with P type schumidt hammer is applied to quality control of concrete. And also, estimated compressive strength obtained from the equation between the rebound number and compressive strength derived from this study shows higher than that of provided data from manufacturing company of P type schumidt hammer about 60% under same rebound number.