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사상의학적(四象醫學的)으로 접근한 노인성 입얼굴 이상운동증 환자 치험 2례
박정환,김윤하,고가연,안택원,Park, Jung-Hwan,Kim, Yoon-Ha,Go, Ga-Yeon,Ahn, Taek-Won 사상체질의학회 2015 사상체질의학회지 Vol.27 No.3
Objectives This study was designed to report diagnosis and treatment by Sasang Constitutional Medicine to the patients with Oro-facial Dyskinesia. Methods These two patients were diagnosed as Soyangin and Taeeumin according to the result of Sasang constitutional diagnosis, and treated by Sasang constitutional medications and acupuncture. The progress was evaluated with the Global Assessment Scale (GAS). Result Oro-facial Dyskinesia was almost disappeared in each patients. the one patient was cured with Chongshimyeonja-tang and Yuldahanso-tang, and the other was cured with Hyeungbangjihwang-tang. Conclusion We can treat Oro-facial Dyskinesia whose cause is mostly idiopathic with the diagnosis and treatment of Sasang Constitutional Medicine.
저온 플라즈마 공정에 의한 NO<sub>x</sub> 제거시 공정 변수의 영향
박정환,김동주,김교선,Park, Jung-Hwan,Kim, Dong-Joo,Kim, Kyo-Seon 강원대학교 산업기술연구소 2001 産業技術硏究 Vol.21 No.1
In this study, we analyzed the $NO_X$ removal effiency by the low temperature plasma process and investigated the effect of several process variables. Most of NO is converted into $NO_2$ and, later, into $HNO_3$ which reacts with $NH_3$ to form $NH_4NO_3$ particles. As the frequency of appling voltage increases, as the applied voltage increases or as the residential time increases, removal efficiency of the NO supplied initially increase. The removal efficiency of $NO_X$ also increases with the increase of $NH_3$ supplied.
하드웨어와 소프트웨어의 역할 분담을 통해 칩 면적을 크게 줄인 Image Signal Processor의 설계
박정환,박종식,이성수,Park, Jung-Hwan,Park, Jong-Sik,Lee, Seong-Soo 한국정보통신학회 2010 한국정보통신학회논문지 Vol.14 No.8
이미지 센서에서 획득된 영상에는 화질 개선을 위해 다양한 이미지 처리 과정이 필요하다. 이러한 이미지를 처리해 주는 역할을 하는 것을 ISP(Image Signal Processor)라고 한다. 기존의 비전 카메라는 상용 ISP 칩을 사용하는 대신에 자체적으로 ISP 기능을 소프트웨어로 구현하여 PC등에서 수행하는 방식을 택해왔다. 그러나 이러한 방식은 ISP 기능을 수행하는데 많은 연산을 필요로 함에 따라 고성능 PC를 필요로 하는 문제가 있다. 본 논문에서는 하드웨어와 소프트웨어의 효율적인 분담을 통해 칩 면적을 크게 줄인 ISP를 제안한다. 연산을 빠르게 처리하기 위하여 연산이 많은 블록은 하드웨어로 설계하였고, 하드웨어의 면적을 고려하여 하드웨어와 소프트웨어를 동시에 이용하도록 설계하였다. 구현된 ISP는 VGA(640*480)급의 영상을 처리할 수 있으며 0.35um 공정에서 91450 게이트의 크기를 가진다. The Image sensor needs various image processing to improve image quality. ISP(Image Signal Processor) performs various image processing. Conventional vision cameras have own software ISP functions and perform in PC instead of using commercial ISP chips. However these methods have problems such as large computation for image processing. In this paper, we proposed ISP that significantly reduced chip area by efficient sharing of hardware and software. Large operation blocks are designed to hardware for high performances, and we used hardware simultaneously with software considering the size of the hardware. The implemented ISP can process VGA(640*4800) images and has 91450 gate sizes in 0.35um process.
박정환,한욱,Park, Jung Hwan,Han, Uk 대한자원환경지질학회 1998 자원환경지질 Vol.31 No.2
Earth tide observations were taken at AMIST observatory in Seoul by LaCoste-Romberg ET gravimeter from September 2 to 16, 1997 for determining the gravimetric factor ($\delta$) and analyzing the tidal components. Meter drifts were corrected by regression and then denoised by threshholding wavelet, a data processing tool. The mean value of $\delta$ is 1.2 and the mean phase lag of & ($M_2$, $S_2$) and & $K_1$, $O_1$) is $0.07{\pm}0.03^{\circ}$ and $0.08{\pm}0.07^{\circ}$ by analyzing the observed earth tides. For yielding measurements of gravity accurate to about 0.01 mgal, the Earth tide observations are required by ET meter. The tidal variations are due to the planet's distance and zenith angle. With the exception of Earth-Moon and Earth-Sun mechanism, the possible causes of tidal variations are tectonical, meterological and hydrological perturbations. The long period and broad observations are required for determining the state of art gravimetric factor in Korea.
침(鍼) 및 전침(電鍼)이 SHR 대뇌(大腦)에서 Doublecortin, PSA-NCAM, pCREB 양성 신경세포에 미치는 영향
박정환,이재동,김창환,Park, Jung-hwan,Lee, Jae-dong,Kim, Chang-hwan 대한침구의학회 2004 대한침구의학회지 Vol.21 No.3
Background and Objective : The aim of this study was to investigate the effects of acupuncture and electroacupuncture on the DCX, PSA-NCAM, and pCREB expression in the brain of spontaneously hypertensive rats(SHR). Materials and Methods : SHR were divided into five groups: control group, acupuncture group, 2Hz electroacupuncture(EA) group and 100Hz EA group. We evaluated the changes of the DCX, PSA-NCAM, and pCREB positive cells using immunohistochemical method. In the olfactory bulb, we investigate the optical densities of the immunoactive cells. In the dentate gyrus and the piriform cortex, we count the immunoactive cells under the $100{\times}$ visual field optical microscope. Results : 1. The optical densities of DCX-positive cells in the subependymal zone were significantly decreased in all groups, compared to the control group. 2. The counts of DCX-positive cells in the dentate gyrus were significantly increased in all groups, compared to the control group. The counts of DCX-positive cells in the piriform cortex were significantly increased in the acupuncture and 100Hz EA group, compared to the control group. 3. The optical densities of PSA-NCAM-positive cells in the subependymal zone were significantly decreased in the acupuncture and 2Hz EA group, compared to the control group. 4. The counts of PSA-NCAM-positive cells in the dentate gyrus and the piriform cortex were significantly increased in all group, compared to the control group. 5. The counts of pCREB-positive cells in the dentate gyrus were significantly increased in all groups, compared to the control group. The counts of pCREB-positive cells in the piriform cortex were significantly increased in the acupuncture and 100Hz EA group, compared to the control group. Conclusion : We conclude that acupuncture and EA may affect neuronal cell proliferation, differentiation and plasticity in the brain.
창호 단열성 시험의 교정시험 측정불확도 추정 및 계측인자 기여율 분석
박정환(Park, Jung-Hwan),조수(Cho, Soo),홍원화(Hong, Won-Hwa) 한국건축친환경설비학회 2017 한국건축친환경설비학회 논문집 Vol.11 No.2
Thermal resistance test of windows and doors is required calibration test, which ‘calibration test of the surface air-film resistance by CRM(Certified reference material)’ and ‘Correction calorimetric test of guarded hot box and edge of surrounding panel by CRM’. These two calibration test involve many metrics and complex procedures, which can lead to reliability problems in test results. In addition, it is necessary to understand the calibration test and to find a way to lower the uncertainty of measurement by analyzing contribution rate of the measurement factors. This paper is a follow up study of 「Estimation on Uncertainty of Measurement on Thermal Resistance Test for Windows And Doors」 and perform the uncertainty of measurement estimation of calibration test excluded from follow up study. As a result, the uncertainty of measurement estimation procedure for the thermal resistance test for windows and doors is proposed. In addition, according to analysis of the contribution rate of the measurement factor, the contribution rate of surface air-film resistance of warm side(Ri) was the highest at 49.643%.
고압 직분사식 가솔린 연료분사기의 노즐 홀 길이가 분무 거동 및 미립화에 미치는 영향
박정환 ( Jeong Hwan Park ),김형진 ( Hyoung Jin Kim ),송재천 ( Jae Cheon Song ),박중원 ( Jung Won Park ),신문성 ( Moon Sung Shin ) 한국액체미립화학회 2014 한국액체미립화학회 학술강연회 논문집 Vol.2014 No.-
Gasoline engine has been developed from PFI engine to GDI engine because global needs and exhaust regulations. GDI engine is well known for higher performance and combustion efficiency compared to PFI engine. However, the direction injection engine has emission problem like a PM, PN. Also, GDI engine must be reduced because of the enhanced emission control. In order to reduce the PM emission, GDI engine has more higher injection pressure from 100bar to 200bar. Because Higher injection pressure cause to lower SMD and good mixture formation. However, cylinder wall wetting is higher due to the longer spray penetration. Therefore, The purpose of this study is to optimize nozzle hole parameter, especially hole length. Spray penetration is proportional to hole length due to the spray momentum. But spray velocity of long nozzle is faster decrease than due to small SMD
박정환(Jung-Hwan Park),지승욱(Seung-Wook Jee),이광식(Kwang-Sik Lee),김민수(Min-Soo Kim),김정배(Jung-Bae Kim),박원주(Won-Zoo Park) 한국조명·전기설비학회 2006 한국조명·전기설비학회 학술대회논문집 Vol.2006 No.11월
현재 국내ㆍ외에서 전력기기용 광CT(optical current transformer)가 활발히 연구ㆍ개발되고 있다. 이러한 광CT는 전력선에 발생하는 자기장에 의해 레이저 빛의 파장 각도가 변하는 현상인 Faraday effect를 기본 원리로 한 전류측정용 기기이다. 즉, 전력선에 발생하는 자기장의 세기에 의해 레이저 광의 파장이 변하므로 자기장의 변화에 따른 센서부의 영향을 고려해야 할 것이다. 따라서, 본 논문에서는 광 CT 개발을 목적으로 한 기초적 연구로서 자기장이 발생하는 전력선에 장착되는 센서부의 재료를 자기적 특성에 따라 분류하고 각 자성체 재료와 전력선과 센서부 사이에 자성체 매질을 적용함에 따른 광CT의 출력신호에 대해 연구 고찰하였다.