http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
근로자들의 극저주파 전자파 노출 수준에 따른 인체 영향 평가
박경호 ( Kyoung Ho Park ),안용호 ( Yong Ho Ahn ),김태전 ( Tai Jeon Kim ) 대한임상검사과학회 2005 대한임상검사과학회지(KJCLS) Vol.37 No.3
Recently, the use of an electrical apparatus has brought up concerns of health risks from exposure to electromagnetic fields. EMF is composed of electric fields and magnetic fields. Heavy exposure to EMF can occur only in the vicinity of high-voltage overhead transmission lines, close to transformers and underground cables, and also close to large electrical machinery. In this thesis I have investigated the hypothesis of the correlation between occupational exposure to ELF-EMF and the risks of leukemia, anemia, cancer. Therefore, the aim of this study is to investigate whether or not ELF-EMF emitted from electric power stations and transformer substations affect some hematological parameters and tumor markers of electric utility workers. The hematological test results and tumor markers under investigation were similar in the two groups but some of parameters such as RBC, AFP, LDH showed significant difference between the two groups from two sample t-test (p<0.05). The exposure group showed increased LDH level compared to the control group by two sample t-tests. In addition, the abnormal LDH level in the exposure group was observed to be clinically significant by χ2-test. However, the levels of RBC, AFP observed were not clinically significant by χ2-test (p>0.05). These results suggested that ELF-EMF does not affect most blood test parameters except LDH of electric utility workers.
IEC 61850 기반의 IED 통합 엔지니어링 툴 개발
한정열(Jeong-Yeol Han),안용호(Yong-Ho Ahn),장병태(Byung-Tae Jang),송인준(In-Jun Song),김용학(Yong-Hak Kim) 한국조명·전기설비학회 2010 조명·전기설비학회논문지 Vol.24 No.8
IEC 61850 기반의 변전소자동화 시스템을 구축하기 위해서는 실계통 변전소에서 엔지니어링이 가능한 IED 공통의 엔지니어링 툴 개발이 요구된다. 따라서 본 연구에서는 해외 선진사가 지원하는 시스템 및 SCL 구성 툴과 같이 IED 상호간의 통신분석 및 운영관리에 요구되는 IED 통합 엔지니어링 툴을 개발하고자 한다. 본 연구에서 개발된 IED 통합 엔지니어링 툴은 IEC 61850에서 규정하는 XML 기반의 언어로 작성된 ICD, SCL 및CID 파일을 생성, 편집 및 저장할 수 있는 프로그램이다. 특히 IEC 61850 기반으로 국내에서 개발된 IED에 대한 엔지니어링 작업 등 모든 IED에 적용이 가능한 범용적인 툴로써, IED에 대한 신뢰성 검증과 사용자 중심의 편리함과 효율성을 제공할 수 있다는 장점을 갖고 있다. In order to construct the IEC 61850 based substation automation system, the IED integration engineering tool is necessary to cope with the substation automation by full digital devices in the real power system. Compared the configuration tools provided IED vendors which are able to support the operation and communication analysis among IEDs, the XML based IED integration engineering tool can build, edit and save the ICD, SCL and CID files. Particularly, the IED integration engineering tool is possible to apply the IEC 61850 based IEDs to engineering the systems and also provides the reliability and efficiency of the system to the utilities and manufacturers.
최종기(Jong-Kee Choi),안용호(Yong-Ho Ahn),윤용범(Yong-Beum Yoon),오세일(Sei-ill Oh),곽양호(Yang-Ho Kwak),이명희(Myoung-Hee Lee) 대한전기학회 2013 전기학회논문지 Vol.62 No.7
Power system fault analysis is commonly based on well-known symmetrical component method, which describes power system elements by positive, negative and zero sequence impedance. In case of balanced fault, such as three phase short circuit, transmission line can be represented by positive sequence impedance only. The majority of fault in transmission lines, however, is unbalanced fault, such as line-to-ground faults, so that both positive and zero sequence impedance is required for fault analysis. When unbalanced fault occurs, zero sequence current flows through earth and skywires in overhead transmission systems and through cable sheaths and earth in cable transmission systems. Since zero sequence current distribution between cable sheath and earth is dependent on both sheath bondings and grounding configurations, care must be taken to calculate zero sequence impedance of underground cable transmission lines. In this paper, conventional and EMTP-based sequence impedance calculation methods were described and applied to 345kV cable transmission systems (4 circuit, OF 2000mm2). Calculation results showed that detailed circuit analysis is desirable to avoid possible errors of sequence impedance calculation resulted from various configuration of cable sheath bonding and grounding in underground cable transmission systems.
세포병리사의 업무량에 따른 적정인력 산정을 위한 업무실태 조사 연구
지수일 ( Soo Il Jee ),안용호 ( Yong Ho Ahn ),하화정 ( Hwa-jeong Ha ),강정은 ( Jeong Eun Kang ),원준호 ( Jun Ho Won ) 대한임상검사과학회 2021 대한임상검사과학회지(KJCLS) Vol.53 No.2
세포병리사는 인체를 구성하고 있는 세포의 상태를 분석하여 암을 포함한 다양한 질병을 진단하는 1차 선별자로서 역할을 수행하고 있으나, 세포병리사의 고용 형태, 업무량 등이 제대로 파악되고 있지 않다. 이에 본 연구는 세포병리사의 효율적인 직무 수행의 범위, 의료기관의 종별에 따른 세포병리사의 업무량 분석 결과를 토대로 병리과질관리 인증평가항목의 기준 설정에 기초자료를 제공하고자 하였다. 연구방법은 전국 의료기관에 근무하는 세포병리사 자격증 소지자를 연구대상으로 설문조사를 실시하였다. 총 245명의 세포병리사가 설문에 응답하였으며 그 중 1차 선별검사 업무를 수행하고 있는 인원은 178명(72.7%)으로 조사되었다. 각 기관별 1일 기준, 세포병리사 1인의 평균 1차 선별검사 건수는 대학병원그룹이 75.4장(16.8장/시간), 병원그룹이 72.4장(18.6장/시간) 그리고 76명이 응답한 전문수탁기관은 231장(32.6장/시간)으로 조사되었다. 이에 본 연구결과를 기초로 세포 선별검사 업무에 대한 기준지침을 수립하여 대한세포병리학회 등과 협의체를 구축하고, 현안 사항에 대한 해결방법을 모색하여 국민건강 보건 향상에 기여해야 할 것이다. Cytotechnologists evaluate and analyze disorders of cells that constitute the human body, and are involved in the primary assessment of diverse diseases, including cancer. However, the employment conditions and workload of cytotechnologists are poorly understood. This study was undertaken to provide basic data for establishing the criteria for quality control certification factors based on the scope of effective task performance of cytotechnologists, and to provide results of their workload analysis according to the type of medical institution. The study was conducted by enrolling certified cytotechnologists working at various nationwide medical institutions. Our analysis revealed that 178 personnel (72.7%) were involved in primary screening of samples. On an average, the daily number of primary screening of samples performed per cytotechnologist (76 respondents) was determined to be 75.4 chapters (16.8 chapters/hours) at the university hospital level, 72.4 chapters (18.6 chapters/hours) at the general hospital level, and 231 chapters (32.6 chapters/hours) at professional trust institutions. Our results indicate the necessity to establish a consultant with the Korean Cell Pathology Association, to enable finding solutions to solve existing issues by establishing accurate standard guidelines for assessing cell screening. Copyright Ⓒ 2021 The Korean Society for Clinical Laboratory Science. All rights reserved.