전립선암 선별을 위한 PSA 측정의 보험의학적 의미

박광일,Park, Kwang-Il 한국생명보험의학회 2010 保險醫學會誌 Vol.29 No.1

The measurement of prostate specific antigen (PSA) in screening for prostate cancer is recently performed as a routine check-up in clinical medicine and insurance medicine. Several factors may affect serum PSA levels. As prostate size increases with increasing age, the PSA concentration also rises. Increasing body mass index (BMI) is associated with a lower mean PSA concentration. Inhibitors of 5-alpha-reductase such as finasteride and dutasteride produce a 50 percent or greater decrease in serum PSA during the first three months of therapy, which persists as long as the drug is continued. Men who are regularly taking non-steroidal antiinflammatory drugs (NSAIDs) or acetaminophen have lower PSA levels. Emerging concepts regarding PSA testing that may help refine the interpretation of an elevated concentration include: PSA density, PSA velocity, and Free versus complexed or bound PSA. With many insurance companies, PSA level has become part of a standard battery of blood tests, along with HIV, cholesterol, liver enzymes, and other predictors of premature death. But, there is no clear proof of benefit, so we have to monitor the value of PSA test as a prostate cancer screening test in insurance medicine.

체내제세동기 이식 시의 사망률분석

박광일,Park, Kwang-Il 한국생명보험의학회 2011 保險醫學會誌 Vol.30 No.2

Background: The beneficial effects of implantable cardioverter defibrillators (ICDs) in primary and secondary prevention patients are well established. However, data on potential differences between both groups in mortality are scarce. The aim of this study was to assess extra risk differences between primary and secondary prevention ICD recipients. Methods: Comparative mortality figures were calculated from a source article using mortality analysis methods. Results: Mortality ratio (MR) of primary and secondary prevention ICD recipients were 393% and 373%. Excess death rates (EDR) of both groups were 42 and 38 per 1,000. Discussion: MR and EDR were higher in primary prevention group. But, there was no significant difference.

진보된 웹 서비스를 위한 프로토타입 시스템 구축

박광일(Park, Kwang Il),이유나(Lee, You Na),송지현(Song, Ji Hyoun),이도경(Lee, Do Kyong),김지영(Kim, Ji Young),이선희(Lee, Seon Hee),홍준석(Hong, June Seok),김우주(Kim, Woo Ju) 한국IT서비스학회 2016 한국IT서비스학회 학술대회 논문집 Vol.2016 No.춘계

정보 습득의 주요한 원천으로 인터넷이 널리 활용되고 있다. 일반적으로 웹 페이지를 통한 지식습득은 검색 엔진이 반환하는 웹 페이지의 내용을 확인함으로써 이루어지는데, 웹에 존재하는 정보에 대한 접근성 측면에서는 그리 효율적이지 않다. 이는 원하는 정보를 얻기 위해서는 웹 검색과 검색 결과에 대한 확인이 사용자가 만족될 때까지 되풀이 되기 때문이다. 이러한 문제점은 불편함과 지식 습득에 소요되는 시간 비용을 증대시킨다. 본 연구에서는 앞서 언급한 문제점을 극복하기 위한 새로운 웹 서비스의 개념을 제시하였고, 이를 단편적으로 지원하는 Prototype System을 구축하였다. 또한, 웹 페이지를 사용자의 기호에 맞게 변경할 수 있는 개인화 서비스의 개념을 소개하였다.

중학교 교내 스포츠리그 운영의 명(明)과 암(暗)

박광일 ( Kwang-il Park ),조욱상 ( Ook-sang Cho ) 한국체육대학교 체육과학연구소 2016 스포츠사이언스 Vol.33 No.2

본 연구는 교육과정 외 시간을 활용하여 운영한 스포츠리그가 중학교 학생들의 학교생활 전반에 어떠한 영향을 미쳤는지를 조사하는 데 그 목적이 있었다. 이를 위해 2014년 경기도 소재 D중학교의 전교생을 대상으로 학년별ㆍ학기별ㆍ성별ㆍ 종목별ㆍ학급별로 스포츠리그를 운영하였으며, 본 연구를 통해 24주간 268경기에 1,100여명의 학생들이 참가하여 스포츠리그가 운영된 사례를 기술하였다. 교내 스포츠리그를 운영한 교사 4명 중 연구자를 제외한 체육교사 3명, 학생심판지원단 활동 학생 10명, 교내 스포츠리그 감상평가 대회에 참여한 학생들을 연구 참여자로 선정하였으며, 연구 참여자를 대상으로 한 심층 면담, 참여 관찰, 문서 자료 수집을 통해 연구 자료를 수집하였다. 수집된 연구 자료는 사례 기록 분석과 귀납적 범주 분석 방법에 의해 분석되었다. 연구 자료를 분석한 결과, 본 연구를 통해 운영된 교내 스포츠리그는 참여 학생들의 또래문화 형성과 신체활동에 대한 인식변화에 긍정적인 영향을 미쳤으나 경기를 반복적으로 수행하면서 학생들간의 경쟁심리가 폭력성 표출로 발생하는 등의 부작용 역시 발생한 것으로 나타났다. The purpose of the study was to investigate changes of students’ school life through participation of school sports clue league. In an effort to achieve such research purposes, this study conducted the intramural sports leagues by school year, semester, gender, event, and class targeting students for the first, second, third year courses, and described the cases where operated were the intramural sports leagues covering 268 games, in which about 1,100 students participated for about 24 weeks. Particularly, this study selected 3 PE teachers excluding this researcher among the 4 teachers operating the intramural sports leagues, 10 students for student judge support group activity, and the whole school students who participated in the intramural sports leagues appreciation & review meeting. This study analyzed the data collected like this through the method of case record analysis and inductive category. According to the results, the operation of the intramural sports leagues by school year, semester, gender, event, and class served to develop a foundation, upon which all students could continuously participate in the leagues through the intramural sports leagues operation program proposal that can make it possible all school students could continuously participate in various sports activities delightfully around the class, and the continuous training and publicity for teachers and students increased their consciousness of the necessity and effect of the intramural sports leagues. On the contrary, the research results showed that with the intramural sports leagues operated centering on the student judge support group, students`` violence increased due to complaints about a student judge``s professionalism, a feeling of burden of weekend sports leagues, and excessive desire for winning.

거주자의 계절별 위생활동 변화와 연간 온수 소비량 예측

박광일(Park, Kwang-Il),곽인규(Kwak, In-Kyu),문선혜(Mun, Sun-hye),허정호(Huh, Jung-Ho) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.2

In order to calculate the energy consumption through the exact implementation of the simulation and the equation, the behavior of the resident should be reflected. Domestic hot water consumption energy is generated for residents’ hygiene. Hygiene activities have shower wash dishes. The temperature and frequency of water used in hygiene activities varies seasonally. For accurate calculation of annual domestic hot water consumption, it is necessary to accurately consider changes in temperature and frequency of water used for each season. To predict the usage of domestic hot water, this paper measured the temperature and frequency on use related to sanitary activities and analyzed seasonal changes.

스테레오 카메라의 미소 병진운동을 이용한 3차원 거리추출 알고리즘

박광일(Kwang-Il Park),이재웅(Jae-Woong Yi),오준호(Jun-Ho Oh) Korean Society for Precision Engineering 1995 한국정밀공학회지 Vol.12 No.8

중점화 공장전략의 경제적 성과에 관한 연구

박광일(Il-Kwang Park) 산업기술교육훈련학회 2009 산업기술연구논문지 (JITR) Vol.14 No.1

This paper is analyzed an economic results into focused strategy of Skinner in own country companies. Analysis of the company s economic results is higher than the others due to production strategy factors is focused on. Therefore, these results supported Skinner s focused strategy theory.

아이스링크 빙판 내부 LED디스플레이 결빙 구조 및 영상 최적화에 관한 연구

박광일(Kwang Il Park),장재현(Jae-Hyun Jang),유영문(Yong Moon Yu) 한국조명·전기설비학회 2018 조명·전기설비학회논문지 Vol.32 No.3

In this paper, we investigated the structure of ice for optimized image mapping after installing LED display device in the ice. The LED display device installed inside the ice transmits the image to the outside of the ice sheet, while the projector above the ice reflects the image from the ice surface. The core part that affects the LED display and projector image inside the ice structure is the scattering layer. The light transmittance was measured by the scattering layer application frequency, and the relative luminance ratio was calculated by measuring the LED display transmission luminance and the projector reflection luminance. Then, the mapping characteristics that overlapped the LED display image and the projector image were observed and the optimum image mapping condition was confirmed. Through this study, it was confirmed that the larger the scattering layer concentration, the smaller the difference between the LED display luminance and the projector luminance, and the better the mapping image can be obtained.

칼슘과 비타민 D 섭취가 티타늄 임플랜트 주위의 골 형성에 미치는 영향

박광일(Kwang-Il Park),이재열(Jae-Yeol Lee),황대석(Dae-Seok Hwang),김용덕(Yong-Deok Kim),김규천(Gyoo-Cheon Kim),신상훈(Sang-Hun Shin),김욱규(Uk-Kyu Kim),정인교(In-Kyo Chung) 대한구강악안면외과학회 2007 대한구강악안면외과학회지 Vol.33 No.2

The purpose of this study was to observe the effect of calcium and vitamin D to the titanium implant osseointegration in animal model. 32 rats, 10 weeks of age, were divided into two group: additional calcium and vitamin D supplementation group and a control group. Titanium screw implant(diameter, 2.0mm; length, 3.5mm; pitch-height 0.4 ㎜) were placed into tibia of 32 rats, 16 in the control group and 16 in the experimental group. The rats were sacrificed at different time interval(1, 2, 4, and 8 weeks after implantation) for histopathologic observation, histomorphometric analysis and immunohistochemistry with osteocalcin and osteopontin antibody. Histopathologically findings, newly formed bone was seen at 1 weeks and became lamellar bone at 2 weeks, and mature trabecullar bone was seen at 4 weeks experimental group. In control group, thickness of regenerated bone increased till 4 weeks gradually and trabecullar bone was seen at 8 weeks. By histomorphometric analysis, bone marrow density was increased significantly at 1 and 2 weeks in experimental group compared to control group. Osteocalcin immunoreactivity was strong at 1 week experimental group and reduced after 4 weeks gradually. But it was continuously weakly from 1 to 4 weeks in control group. Osteopontin immunoreactivity was very strong in newly formed bone from 2 to 8 weeks experimental group. And the amount of osteopontin expression was more abundant in experimental group. The results of this study suggest that calcium and vitamin D supplementation promotes bone healing around dental implants

유기성슬러지 먹이공급에 따른 붉은줄지렁이 사육상의 pH, EC, 수용성 이온 농도변화

박광일(Kwang Il Park),배윤환(Yoon Hwan Bae) 유기성자원학회 2017 유기물자원화 Vol.25 No.3

경기도 포천시 관내 하수 및 인분 처리장들에서 발생하는 유기성 슬러지를 지렁이 먹이로 공급하였을 때, 지렁이 사육상의 수용성 양이온, 음이온 농도 및 pH, 전기전도도 등의 이화학 성상 변화를 추적하였다. 먹이로 공급된 슬러지의 pH, 전기전도도, 유기물 함량 및 함수율은 지렁이의 단기적 섭식이 가능한 범위였으나, 슬러지의 공급량이 늘어감에 따라 섭식속도가 느려지고 결국 지렁이 사멸현상이 나타났다. 또한 슬러지 공급량이 늘어감에 따라 지렁이 사육상이 산성화되었고, 전기전도도가 높아지는 것으로 보아 염류집적 현상이 일어난 것을 알 수 있었으며, 동시에 사육상의 수용성 음이온 및 양이온 농도가 높아졌다. 특히 수용성 이온 중 NO₃-의 농도 집적이 두드러졌다. Changes in pH, EC and water soluble cation and anion of the bed material in the rearing box of earthworms were investigated while sewage sludges or night soil sludge were cumulatively supplied to the 15 grams of initial earthworm population in the rearing box. Initial biochemical properties of sludges such as pH, EC, V.S. and water content were at the edible levels for earthworm. However, as the cumulative amount of sludges supplied to the earthworms were increased, pH of bed material in the rearing box was lowered and EC was increased, which meant that salt contents of bed material in the rearing box had been accumulated. Water soluble cations and anions were also accumulated in the bed material of the rearing box. Accumulation rates of NO₃- were especially prominent. Consequently, feeding rates of earthworm populations were reduced to nearly zero and earthworm populations finally died.