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박종욱,권구정,김병일,이정윤,Park, Jong-Wook,Kwon, Koo-Jung,Kim, Byoung-Il,Lee, Jung-Yoon 대한건축학회 2011 대한건축학회논문집 Vol.27 No.8
Plastic hinges are generally developed at both ends of reinforced concrete (RC) beams in the post-yield region. To complete the plastic deformation mechanism, column plastic hinges at the base of the structure are also required. The longitudinal axial strain in the plastic hinge regions of RC columns has a significant influence on the behavior of RC structures subjected to reversed cyclic loading. This strain affects energy dissipation in the hysteretic response by causing the sliding along interconnecting wide flexural cracks. In addition, the strain also influences on the deformability of RC structures. In order to investigate the effects of the axial force on the axial strain in the plastic hinge region of RC members, experimental and analytical study was performed with ten RC members subjected to reversed cyclic loading. The experimental and analytical results indicated that the axial force significantly decreased the axial strain in the plastic hinge region of RC members.
부산 일부지역 근로자들의 재해성 요부손상에 대한 사회의학적 조사
박종욱,김돈균,이수일,조병만,조봉수,김영욱,Park, Jong-Ook,Kim, Don-Kyoun,Lee, Su-Ill,Cho, Byung-Mann,Cho, Bong-Soo,Kim, Young-Wook 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.2
This survey was performed to obtain the basic information for the prevention and management of occupational low back injury (LBI). The subjects of this survey were 952 workers (male, 892 ; female, 60) who had taken occupational LBI in some industries of Pusan area from January 1 to December 31, 1991. Observation period was 2.6 years from the beginning to the end of medical treatment. The obtained results were summarized as follows ; 1. The proportion of LBI workers was 15.9% of the workers who had taken any occpational injuries and 0.32% of all workers in this surveyed area. 2. 8.0% of the workers had taken LBI on the 1st day of employment and 55.2% of the workers were within one year, 91.4% of the workers were within 10 years according to cumulative frequency distribution. 3. Handling of heavy objects was the most common cause of LBI (32.0%) and fall down (26.9%) and slip down (16.3%) were the next in order. 4. The most common causes of both lumbar sprain and HNP were handling of heavy objects and that of lumbar fracture was fall down. 5. The mean duration for medical treatment of LBI workers was 143 days. 6. The total direct compensation cost for LBI workers was 6,736 million Won and the proportion of medical, resting, disability compensation costs were 25.0%, 37.0%, 38.0 % respectively. 7. The percentages of retreated workers and disabled workers were 11.9% (113 persons) and 22.9% (218 persons) of total LBI workers respectively.
DPD / DPV 프로토콜 요구기준을 만족하는 개선된 OCSP (I - OCSP) 설계
박종욱(Jong-Wook Park),서정훈(Junghoon Suh),이용(Yong Lee),이재일(Jaeil Lee) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1A
본 고에서는 현재 X.509 인증서를 검증하기 위하여 온라인으로 인증서 상태정보를 제공하는 OCSP가 클라이언트 · 프로토콜 · 서버 주체별로 IETF 공개키기반구조 워킹그룹에서 정의한 총 23개의 DPD/DPV 프로토콜 요구기존에 적절히 부합하는지 고찰하고 도출된 기술적 보완사항을 적용하여 다양한 응용환경에 적합하며 신뢰성 있는 서비스를 제공할 수 있는 개선된 OCSP를 제시하고자 한다.
박종욱 ( Jong Wook Park ),정지민 ( Ji Min Chung ),정경은 ( Kyung Eun Jung ),진원우 ( Won Woo Jin ),김명화 ( Myung Hwa Kim ),신용우 ( Yong Woo Cinn ) 대한피부과학회 2008 대한피부과학회지 Vol.46 No.11
Trichloroethylene (TCE) is a chlorinated hydrocarbon that is widely used as a degreasing agent in industry. Systemic absorption of this chemical can result in neurological, hepatic and cutaneous toxicity. Several cutaneous manifestations of TCE-exposed patients have been reported, including Stevens Johnson syndrome, subcorneal pustular eruption and generalized pustular eruption. We report here on an unusual case of TCE hypersensitivity syndrome in a 38 year old man after occupational exposure to TCE. (Korean J Dermatol 2008; 46(11): 1561∼1563)
우리나라 일부 농촌지역 주민에서의 HbsAg 및 anti - HBs 양성률에 관한 연구 - 최근 3 년간의 변화양상과 산모에서의 양성률을 포함하여 -
박종욱(Jong Wook Park),김병채(Byeong Chae Kim),박종헌(Jong Heon Park),김원영(Won Young Kim),고영일(Young Il Koh),류도현(Do Hyun Rheu) 대한내과학회 1998 대한내과학회지 Vol.55 No.2
N/A Objective: The positive rates of hepatitis B virus (HBV) markers differ according to age, sex, race, locality, sexual behavior, socioeconomic conditions, immunologic and genetic factors. It is a well-known fact that Korea is one of the endemic areas of HBV infection in the world. Past many reports have presented that the gositive rates of HBsAg and anti-HBs in Korea were about 6~14Yo and 30-62%, respectively. However there were a few epidemiological surveys of rural communities on the positive rates of HBV markers. The present study undertook to determine the positive rates of HBsAg and anti-HBs in Hwasun county, a rural area of Korea. Methods We performed Population-based crosssectional study by random cluster sampling of registered residents in Hwasun county. Out of the 2,920 subjects (4.1%) scheduled for the survey, 1,913 residents under- went the actual examination. We tested EG3sAg and anti- HBs by reversed passive hemagglutination (HPHA) and passive hemagglutination (PHA), respectively. Results: The positive rates of HBsAg and anti-HBs in all subjects were 5.6% and 20.8%, respectively, and those were 5.4% and 20.4% in 168 pregnant women, respectively. The positive rate of HRsAg was significantly higher in male (8.2%) than in female (4.0%) (p< 0.01). The positive rate of anti-HBs was 21.4Yo in female, but it was not significanly higher than in male (19.6%). There were no significant differences according to age groups in the positive rates of HBsAg and anti-HRs. Conclusion There are no significant changes in the positive rates of HBsAg and anti-FB3s between the present study for Hwasun county and past many reports in Korea. Although the rate of hepatitis B vaccination increased significantly, it was not effective because that the vaccinated total numbers in the rural area of Korea were probably small. So it is very important to undertake a nationwide program of hepatitis E3 immunization and to educate the residents in rural areas of Korea.