http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
황병준(Byung Jun Hwang),김종찬(Jong-Chan Kim) 한국자동차공학회 2023 한국자동차공학회 부문종합 학술대회 Vol.2023 No.5
This paper proposes design and validation of fault diagnosis for electric oil pumps used in vehicle. There can be various requirements for a malfunction diagnosis, but it is difficult to analyze without understanding the characteristics of an electric oil pump. The proposed method provides how to analyze the fault diagnosis requirements of electric oil pumps and state machine model designs to implement source code and validate with system implementation. This method will be necessary to predict various fault situations and determine the actions to be taken in each situation. Also it presents a way to ensure consistency between fault diagnosis requirements and the implementation.
에폭시-층상실리케이트 나노콤포지트 초음파 적용 최적 분산조건
박재준(Jae-Jun Park),엄지용(Ji Yong Um),김호균(Ho-Kyoun Kim),윤병제(Byung Jae-Yoon),윤여욱(Yo-Wook Yun),박구현(Gu-Gyun Park),황병준(Byung Joon Hwang) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.10
친환경적인 분산기법으로 강력초음파 분산기법이 최근에 여러연구자들에 의해 적용되어 그 성과를 나타내고 있다. 에폭시-층상실리케이트 제조기법 중 가장 중요한 물성향상이 동반 상승되는 경우 분산처리를 통한 나노콤포지트 제조에 있다. 분산능력의 최적상태를 찾기위해 초음파 적용시간을 4가지 적용시간을 달리하여 제조된 나노콤포지트 기계적, 전기적강도를 측정하여 와이블 확률분포 통계처리를 한 결과 전기적 절연파괴강도와 기계적 굴곡강도에서 최적의 분산상태를 얻을 수 있었다.
HIP TRANS LATERAL검사시 Femur neck의 적정한 입사각도와 검사방법의 표준화를 통한 재현성있는 영상 구현에 대한 연구
조성배(Sung-Bae Cho),황병준(Byung-Jun Hwang),박대영(Dae-Young Park),한동균(Dong-Kyoon Han),윤명성(Myung-Sung Yoon),윤종두(Jong-Doo Yoon),김승혁(Seung-Hyuk Kim) 대한영상의학기술학회 2018 대한영상의학기술학회 논문지 Vol.2018 No.1
목 적:각 병원 및 검사실간의 HIP TRANS LATERAL 검사가 상이하여, 성별, 연령에 따른 적정한 X-ray 입사각도를 조사하고, 모든 검사자의 오차를 줄이기 위한 검사방법을 표준화하여 정확하고 재현성 있는 진단적 가치가 높은 영상을 만들고자 하였다. 대상 및 방법:2016년 6월 1일부터 12월 31일 까지 7개월 동안 서울 “S” 병원을 내원한 환자 중 수술적 치료를 받지 않으며 변형이 없는 HIP 전후(AP) 검사를 시행한 20대 이상 환자 300명(남성 153명, 여성 147명)을 대상으로 하였다. 방법은 300명의 HIP 전후 검사한 영상을 임상경력 5년 이상의 방사선사가 대퇴경 간각을 측정하여 평균각도를 확인하고, 성별, 연령별 유의성을 통계 분석하였다, 대퇴경간각 52°를 유지하고 있는 CT DATA를 이용하여 3D Printer로 Human phantom(HIP)을 제작하였다. 이 제작한 Phantom으로 x-ray 입사각도를 32°, 42°, 52°, 62°, 72°까지 10° 간격으로 변화를 주어 대퇴경부의 면적을 정성적, 정량적 영상평가를 하였다. 검사방법 표준화에서 Tube column과 cassette holder는 각도표시로 하고 다리는 고정용구를 사용하였다. 결 과:성별에 따른 대퇴경간각은 남성이 여성보다 평균 0.7° 높게 나왔으며, 남,녀 평균값의 차이는 통계적으로 유의한 차이를 보이지 않았다(p>0.05). 연령대에 따른 대퇴경간각은 모든 연령대에서 평균값의 차이는 통계적으로 유의한 차이를 보이지 않았다 (p>0.05). 영상평가는 제일 크게 측정된 대퇴경부의 면적은 1794.7mm2 였으며 Cassette holder:52°, X-ray 입사각도:52°일 때였다. 제일 적게 측정된 면적은 698.1 mm로 Cassette holder:32°, X-ray 입사각도:32°일 때였다. 검사자의 오차를 줄이기 위한 검사방법의 표준화는 tube column과 cassette holder에 52°를 표시하고 다리를 15°안쪽으로 돌릴 수 있도록 고정용구를 사용하였다. 결 론:본 연구에서 제시하는 Femur neck에 대하여 X-ray 입사각도 52°도를 적용하고, 표준화된 검사방법을 이용하여 정확하고 재현성 있는 영상을 획득할 수 있게 되었으며 진단에 도움이 될 것으로 사료된다. Purpose:Because examination methods are not standardized to HIP TRANS LATERAL among examiners, the images of the Femur Neck are distorted and appear different. Therefore, the proper X-ray incident angle is suggested and the examination methods are standardized. Materials and Methods:From June 1 to December 31 in 2016, among visitors at the “S” general hospital in Seoul having HIP undergone not surgical treatment and unmodified, 300 patients were subjected. 4 radiological technicians who have over 5 years clinical experience measured neck-shaft angle and area by using GE PACS WORKSTATION 4.0, then for standardization, the angle was displayed on the cassette holder, the 15° fixture was used on the leg, and the angle was displayed on the tube column by dividing the right and left sides, human phantom was manufactured using the 3D printer, and then to target this phantom, image evaluation was done with changing x-ray incident angle. To assess significance, statistical analysis was performed using SPSS. Result:The mean femoral neck-shaft angle of the male was 52.6°±47 and the female was 51.9°±4.1. The average height of the male was 0.7° higher than that of the female (p>0.05) is 52.3°±4.4. The distribution of neck shaft angle were 41°~45° showed 14 persons (4.7%), 46°~50° showed 61 persons (20.3%), 51°~55° showed 144 persons (48%), 56°~60° showed 75 persons (25%), 61°~65° showed 5 persons (1.7%),and 66°~70° showed 1 persons (0.3%). The agespecific angle of the femur neck was 51.8° in the 20s, 52.8° in the 30s, 52.7° in the 40s, 52.1° in the 50s, 52.5° in the 60s, 51.6° in the 70s, 52.4° in the 80s, and 52.6° in the 90s, respectively. The difference in angular mean values of femur neck was not statistically significant in male, female, and all ages (P>0.05). The image evaluation was carried out with an area of 1794.7 mm2 when the line-of-sight of the x-ray was 52° and the detector angle was 52°, which was wider than the angle of the other incident lines. A standardized image was obtained using an angle of 52 ° to the cassette holder and the tube column, a fixed angle of 15° to the leg, and a 52° angle of the incident X-ray beam and an angle of 52° of the detector. Conclusion:HIP TRANS LATERAL image quality degradation is mainly caused by incorrect angle of incidence of X-ray and angle of detector. In this study, we could obtain accurate and reproducible images by using standardized exam method using angle of 52° of X-ray incident angle and this will be helpful for the diagnosis.
메카넘 바퀴를 적용한 전동 리프팅 휠체어의 설계 및 제작에 관한 연구
조장현(Jang Hyen Jo),황병준(Byung Jun Hwang) Korean Society for Precision Engineering 2011 한국정밀공학회지 Vol.28 No.2
We reported the design, prototype, test drive, and mechanical & electrical engineering analyses of a power-lifting wheelchair using mecanum wheels. Mecanum wheels enable translational and rotational movement of the device in any direction on the ground. The power-lifting capability enables the seated individual to reach the standing height of a non-disabled individual. This mecanum wheelchair is fully controlled by the joystick attached to the armrest. The motion of the wheelchair and lifting action of the seat were studied using statics and dynamics. We believe this mecanum wheelchair is a prime candidate for commercial production.
A study on the Spatial dose by change of Gantry angle in brain CT
성동찬(Dong-Chan Sung),김영균(Young-Kyoon Kim),김은혜(Eun-Hye Kim),황병준(Byung-Jun Hwang),안미섭(Mi-Seob Ahn) 대한CT영상기술학회 2020 대한CT영상기술학회지 Vol.22 No.2
공간 선량은 환자와 방사선 관계 종사자, 의료인의 피폭 정도를 인지하는데 있어 매우 중요한 지표이다. 그러나 두부 CT 검사 시 갠트리 각도를 사용함에도 불구하고, 갠트리 각도에 따른 공간 선량의 변화에 대한 연구는 미흡하기에 본 논문에서는 I30부터 S30까지 갠트리 각도를 5°씩 변화시켜 공간 선량을 측정하고, 전리조 측정 높이와 거리를 변화시켜 각도 별 공간 선량을 측정하였다. 그 결과, 지점, 측정 거리, 측정 높이에 따른 공간 선량의 변화를 확인할 수 있었고, 갠트리 각도 I30부터 S20에서는 갠트리 전면부가 후면부보다 더 낮은 공간 선량이 측정됨을 알 수 있었다. 그러므로 동행한 의료인은 이러한 사실을 인지하고 갠트리 각도에 따라 갠트리 전·후면부에 대기한다면, 의료인이 받게 될 불필요한 공간 선량과 피폭 선량 감소에 도움이 될 것이라 사료된다. Spatial dose is a very important indicator of the degree of exposure between patients, radiation workers, and medical personnel. However, despite the use of gantry angles in brain CT examinations, the study on the variation of spatial dose according to gantry angles was insufficient, so in this study, the spatial dose was measured by varying gantry angles by 5° from I30 to S30, and it was also measured by varying the height and distance of the ion chamber measurements.A s a result, it was possible to confirm the change in the spatial dose according to the point, the measuring distance, and the measuring height, and it was found that the spatial dose of the front part of the gantry was lower than that of the rear part from the gantry angle I30 to S20.T herefore, if the accompanying medical personnel are aware of this fact and wait at the front and rear sides of the gantry according to the gantry angle, it is believed to help reduce the unnecessary spatial dose and exposure dose that the medical personnel will receive.
배드민턴 경기 승패에 따른 혈중 젖산농도 및 스트레스 호르몬 분석
김상수(Kim, Sang-Su),박성빈(Park, Sung-Bin),박영호(Park, Young-Ho),이소정(Lee, So-Jung),김진환(Kim, Jin-Hwan),윤해철(Yoon, Hae-Chul),주석범(Ju, Suk-Bum),황병준(Hwang, Byung-Jun),박찬후(Park, Chan-Hu),윤성덕(Yoon, Sung-Duk) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.5
The following research was conducted in order to compare changes in blood lactate levels and stress hormones, such as cortisol, epinephrine, and norepinephrine, of twenty male university students who belonged to a badminton club and arrived at the following conclusions: 1. The changes in blood lactate levels did not show a significant difference in the subjects before or after a game, or between winning and losing groups. 2. The cortisol levels within the same group also did not show a significant change before or after the game; however, the losing group showed higher cortisol levels, and the winning group showed significantly higher levels of cortisol (p<.05). 3. There was no significant change in epinephrine levels between subjects in the same group; however, the losing group showed slightly lower epinephrine levels before the game and the winning showed slightly higher levels. There was, however, no significant difference between the two groups. 4. The change in norepinephrine levels in the winning group dropped after the game and increased in the losing group. But the change was not statistically significant. In conclusion, this research looked into the blood lactate and stress hormone levels of university badminton club students with less than one year of experience. According to the research, blood cortisol levels of the losing group was significantly higher than that of the winning group. The epinephrine and norepinephrine levels of the winning group"s participants dropped by a statistically insignificant amount after a game. These results are in contrast to existing research results. This can be attributed to anxiety factors before games and achievement factors such as winning. In order to better explain the changes in stress hormone levels due to winning or losing, further psychological and physiological research on various sporting mediums and skill levels need to be conducted.