간질의 평가와 진단 - 발작간 뇌파소견을 중심으로 -

박건우,Park, Kun-Woo 대한생물정신의학회 2001 생물정신의학 Vol.8 No.2

The routine interictal electroencephalogram(EEG) continues to play an important role in the diagnosis and treatment of epilepsy. The clinical investigation of brain disease in the last decade has been marked by dramatic advances in functional imaging, magnetic resonance scanning and digitized EEG. Epilepsy is a disorder of electrical hyperirritability of cerebral cortex and the interictal EEG remains the most convenient means available to demonstrate cortical hyperirritability. The sensitivity and specificity of the EEG in the diagnosis of epilepsy have been disputed. In this review, the type of EEG findings in epilepsy are reviewed and the sensitivity and specificity of interictal epileptiform discharge are discussed. And also the role of EEG in various clinical situations are summarized.

뇌혈관질환 예방에 대한 최신지견

박건우,Park, Kun-Woo 한국생명보험의학회 2002 保險醫學會誌 Vol.21 No.-

대형 석탄화력 발전소에서 통풍계통 안정화를 위한 과잉공기비 조정

박건우,유호선,Park, Kun Woo,Yoo, Ho-Seon 한국플랜트학회 2018 플랜트 저널 Vol.14 No.2

본 연구에서는 870 MW 대형 석탄화력 발전소에서 출력을 고정시키고 과잉공기비 조정만으로 통풍계통 안정 및 보일러 효율에 어떠한 변화가 있는지를 분석하였으며 이에 따른 적정 과잉공기비를 선정하였다. 과잉공기비 조정에 따라 공기예열기 압력강하, 유인송풍기 실속여유 등이 변하므로 통풍계통 안정화를 위해 적정 과잉공기비 선정은 반드시 필요하다. 따라서 본 연구에서는 과잉공기비를 통상 운전 값인 1.153에서 운전지침서상의 하한 값인 1.127까지 단계적으로 조정하여 공기예열기 압력강하, 유인송풍기 1차 실속여유, 보일러 효율, 각종 손실 등을 측정하였고 보일러 효율도 동등수준이상으로 유지하면서 통풍계통도 위험수준에서 안전하게 이격시켜 안정화에 기여할 수 있는 적정 과잉공기비를 선정하였다. 적정 과잉공기비는 운전지침서 상의 하한 값인 1.127까지 낮추어 운전하는 것이 바람직하다고 판단된다. In this study, I analyzed the effects on stabilizing the draft system, boiler efficiency when changing excess air ratio under 870 MW load limit operation condition in a large capacity coal fired power plant and decided optimum excess air ratio. It is positively necessary to choose adequate excess air ratio for stabilizing draft system because air pre-heater pressure drop and induced draft fan first stall margin are changing when adjusting excess air ratio. This study therefore, measured air pre-heater pressure drop, induced draft fan first stall margin, boiler efficiency, loss and has chosen adequate excess air ratio adjusting excess air ratio from 1.153 to 1.127. So it is recommended that the operation point needs to be changed to 1.127 that is not only to decrease air pre-heater pressure drop and to stabilize draft system and to secure stall margin but also to maintain boiler efficiency to equivalent level.

대학 캠퍼스 공간운용 분석요소 활용에 관한 연구

박건우(Park Kun-Woo),김치환(Kim Chi-Hwan) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(계획계)

This study focused on the development of analysis indexes for the present operational situation in university campus. In this study, seven analysis indexes for operational situation were established and applied to this study. They are the indexes of basic environment and space operation. The former includes the composition ratio of spatial usage, the type of lecture, and unit area per person. The latter includes the ratio of utilization, seat occupation of each lecture, common usage and rotation of each space. These Indexes was applied to three buildings of C university campus in Gyeongbuk and the operational situation of the buildings was analyzed.

낙후된 골목의 효과적인 재생을 위한 정체성의 필요성과 구성 요소에 관한 사례연구

박건우(Park, Kun-Woo) 한국실내디자인학회 2017 한국실내디자인학회논문집 Vol.26 No.3

From the stages of formation, to the processes of change, the alleys with long history not only reflect on the trends of the area, but also have a historical and cultural value as a place where the local residents make living and socialize. However, due to the rapid growth of the city’s civilization, and industrialization, there has been a great amount of loss in the roles of the rural areas while urban areas have been expanding over time. The rural areas including the old alleys have been neglected and fell far behind in the processes of growth overall, and therefore, it became harder to trace the old days as well as the old emotion that we used to see. Nowadays, there are various cases in terms ofalley regeneration project as people are getting more interested in it. Thealley regeneration projectscan be divided into two different backgrounds; a part of urban regeneration project by the government and local organizations and the other developed by the trends. This research, with successful case studies, is for analyzing the direction of the ultimate goal and the identity that only the alleys have. As the alleys contain history, tradition and culture of the community, we need to not only preserve but also maintain all of these since it will affect the goal and the establishment of identity of the alley regeneration projects as a significant factor. Inaddition, in order to attract visitors from diverse cultures, providing cultural or artistic experiences and aesthetic landscapes will be importantly considered as an additional factor for the research. In other words, through this research, I would like to demonstrate that it is the most important for the alleys fell far behind to establish its identity for continuous successfulalleyregenerationprojects, which are not temporary.

포인트 클라우드 자료의 이진영상 전환을 통한 창문 판별

박건우(Kun-Woo Park),정재훈(Jae-Hoon Jung),허준(Joon Heo) 대한공간정보학회 2014 한국지형공간정보학회 학술대회 Vol.2014 No.5

심층 강화학습을 이용한 항공기 충돌 회피 모델링 및 모델 최적화

박건우(Kun-Woo Park),김종한(Jong-Han Kim) 제어로봇시스템학회 2021 제어·로봇·시스템학회 논문지 Vol.27 No.9

We propose an imitation-type reinforcement learning approach for aircraft collision avoidance problems. The policy model is initially supervised to learn the collision avoidance strategies based on the domain-knowledge from the flight mechanics and the guidance contexts, and then it is updated and optimized via reinforcement learning and the proximal policy optimization. The performance of the proposed approach was verified via Monte-Carlo simulation runs that contain a wide range of collision geometries.

휠체어농구선수의 암 에르고미터 운동부하검사 시 운동속도에 따른 생리적 반응 비교

박건우 ( Kun Woo Park ),윤호상 ( Ho Sng Yun ),최승권 ( Seoung Gweon Choi ) 한국특수체육학회 2014 한국특수체육학회지 Vol.22 No.3

본 연구의 목적은 암 에르고미터 운동부하검사 시 크랭크축 회전 운동속도에 따른 생리적 반응을 비교 분석하여 운동부하검사 시 효과적인 크랭크축 회전운동 속도를 제시하는데 있다. 연구 대상자는 Y대학교 비 장애인 휠체어 농구부 남자 선수 10명이었다. 4가지(60rpm/min, 70rpm/min, 80rpm/min, 60∼80rpm/min) 암 에르고미터 크랭크축 회전운동 속도에 따른 최대하 및 최대운동부하검사를 무선배정으로 반복 실시하였고 환기량, 산소섭취량, 심박수, 운동지속시간을 20초 구간으로 필터링하여 비교 분석하였으며, 혈중젖산농도는 운동부하검사전, 운동직후, 회복기 2분, 4분, 6분으로 비교 분석하였다. 4가지 운동속도에 따른 심폐기능의 반응 차이를 SPSS ver. 18.0 program으로 one-way RM(4) ANOVA로, 4가지 운동속도별 혈중젖산농도와z측점시첨에 따른 차이 분석을 two-way RM(4×5) ANOVA로 분석하였다(p<.05). 분석된 자료를 통하여 얻어진 결론은 다음과 같다. 첫째, 암 에르고미터 최대하운동검사의 크랭크축 회전운동 속도는 분당 70rpm, 80rpm의 회전운동보다 느린 60rpm이 통계적으로 유의한 차이는 나타나지 않았지만, 높은 값을 나타내었다. 둘째, 최대운동부하검사 뿐만 아니라, 최대하운동부하 검사 시에도 12분 간 실시하였을 경우 보다 효과적인 생리적 반응을 이끌어 낼 수 있다. 셋째, 기존 암 에르고미터 측정 시 가장 빈번하게 사용되는 분당 60rpm의 회전운동이 운동지속시간은 짧지만 최고산소섭취량은 이끌어내지 못하며, 70rpm 또는 80rpm에서 가장 높은 최고산소섭취량을 나타낼 수 있다. The purpose of this study was to compare and analyze physiological responses according to crank axis rotating rate in the arm ergometry graded exercise test in order to suggest effective crank rate. The research participants were 10 non-disabled wheelchair basketball players in Y University. The random allocation of the submaximal exercise test and maximal exercise test according to 4 types (60rpm, 70rpm, 80rpm, 60∼80rpm) of arm ergometry crank rate was carried out repeatedly. Ventilatory volume(VE), oxygen uptake(VO₂), heart rate(HR) and time of exercise were compared and analyzed by filtering with 20 seconds interval. Blood lactate level was compared and analyzed before the test, after the exercise, 2 minutes, 4 minutes and 6 minutes after the period of convalescence. The difference of cardio pulmonary function according to 4 crank rates were analyzed with one0way RM(4) ANOVA using SPSS ver. 18.0 program, and the difference of blood lactate level was analyzed with two-way RM(4×6) ANOVA (p<.05). The results are as follows. First, in the submaximal exercise test at constant 50W load for 12 minutes, there was no difference in the result value of 4 crank rates, but the crank rate of 60rpm had the highest level in ventilator volume, oxygen uptake and heart rate. Second, in the submaximal exercise test at constant 70W load for 12 minutes, there was no difference in the result value of 4 crank rates. Different to the result with 50W load, the result value of 60rpm of crank rate had the lowest for all variables except for heart rate. Third, in the maximal exercise test at for crank rates, there were significant differences in all values except for ventilatory volume(p<.05), in which the crank rate with 70 rpm had the highest oxygen uptake(VO₂peak) and heart rate(HRpeak). Therefore, the crank rate with 70 rpm is proved to be suitable for maximal physiological responses in the maximal exercise test of arm ergometry.

황해 동부해역 표층퇴적물의 중금속 농도 분포

선철인,박건우,박현실,박준건,김성길,최만식,SUN, CHUL-IN,PARK, GEON-WOO,PARK, HYEON-SIL,PARK, JUN KUN,KIM, SEONG GIL,CHOI, MAN SIK 한국해양학회 2018 바다 Vol.23 No.4

황해 동부해역 표층퇴적물의 중금속 분포 특성을 파악하기 위하여 입도, 유기탄소(TOC)와 함께 중금속 원소들(Cu, Pb, Zn, Cd, Cr, Mn, As, Ni, Co, Li, Fe, Al)의 농도를 분석하였다. 연구결과에 따르면, 일부 정점에서 Pb, Mn, As를 제외하면 모든 중금속 농도의 분포는 입도 및 TOC의 분포와 유사하게 황해 중앙해역에서 상대적으로 높고, 한국 연안으로 갈수록 감소하는 경향을 보였다. 입도와 중금속 농도간의 관계를 통하여 대부분의 금속은 입도가 세립할수록 농도가 높게 나타나는 일반적인 경향을 보였다. 그러나 일부 정점에서 Pb은 조립질 퇴적물에서의 암석기원(feldspar) 영향, Mn은 생물기원($CaCO_3$) 영향, As는 중광물(pyrite) 특성에 따라 분포 양상이 다르게 나타났다. 과거에 조사한 자료(2000년)와 비교했을 때, 황해 동부해역에서 지난 15년 동안의 추가적인 중금속 농축은 없었고, 투기해역에 대한 저질환경은 과거에 비해 크게 개선되지 못한 것으로 나타났다. 연구해역 내 모든 중금속의 농도는 한국과 중국에서 규정하고 있는 최소기준(TEL, MSQ-1)보다 낮았지만, 농축지수(enrichment factor; EF), 농집지수(geo-accumulation index; $I_{geo}$), 생태위해성지수(ecological risk index; ERI)는 Cu, Pb, Zn, Cr이 황해 중앙해역에서 상대적으로 높게 나타났다. In order to determine the distribution characteristics of the heavy metals in surface sediments of the eastern Yellow Sea, heavy metal concentrations (Cu, Pb, Zn, Cd, Cr, Mn, As, Ni, Co, Li, Fe and Al) together with grain size and total organic carbon (TOC), were analyzed. The concentrations of all heavy metals, with the exception of Pb, Mn and As in some stations, were relatively high in the central area of the Yellow Sea and tended to decrease toward the Korean coast. A significant relationship between grain size and concentrations of heavy metals suggested that they were mostly controlled by quartz dilution effect. However, at some stations, Pb, Mn and As exhibited different distribution patterns. For Pb, the differences were caused by petrogenetic influences (feldspar) in coarse-grained sediments. In the case of Mn, biogenetic influences ($CaCO_3$) affected distribution patterns. As was distributed differently because of the existence of a heavy mineral (pyrite). A comparison with previous data (collected in 2000) shows that the heavy metal concentration in the eastern Yellow Sea has not increased over the past fifteen years. The sedimentary environment of dumping sites in the Yellow Sea has not been significantly improved during this period. The results of the pollution assessment revealed that the concentrations of heavy metals in the study area were lower than lower criteria (TEL, MSQ-1) in Korean and Chinese sediment quality guidelines. The enrichment factor (EF), geo-accumulation index ($I_{geo}$) and ecological risk index (ERI) of Cu, Pb, Zn and Cr were higher in the central area of the Yellow Sea.

한국산 가토에서의 Shope Fibroma Virus에 대한 항체증명과 섬유종 형성에 관한 연구

양현옥,박건우,류선자,우영대,주용규,이호왕,Yang, Hyun-Ok,Park, Kun-Koo,Ryu, Sun-Ja,Woo, Young-Dae,Joo, Yong-Kyu,Lee, Ho-Wang 대한미생물학회 1998 Journal of Bacteriology and Virology Vol.28 No.4

In our preliminary study to find antiviral or antitumor agents from Korean natural products, we found that the Shope fibroma virus (SFV) induced fibromas reaching maximum size at $5{\sim}6$ days with spontaneous disappearance at $15{\sim}20$ days after SFV intracutaneous inoculation into Korean domestic rabbits. However, the sizes of fibromas of rabbits at day 5 after virus inoculation were significantly different individually. Assuming that the variation of tumor size was due to either susceptibility or the preexisting antibodies against SFV in the Korean domestic rabbits, the rabbits were checked for the antibodies against SFV by IFAT using SFV infected RK13 cells. The antibody positive rate of normal Korean domestic rabbits was 32.8% and the sizes of the fibromas of the positive rabbits were significantly smaller than those of negative rabbits (p<0.0001). The fibroma sizes were dependent on the antibody titers of rabbits to SFV. The sizes of fibromas after inoculation of SFV into immunized rabbits were about one tenth of those by the first inoculation into normal rabbits. This is the first report on the antibody prevalence against SFV among normal Korean domestic rabbits and it suggest the existence of a wild fibroma virus or related virus in Korea.