정신과 응급환자에 대한 Chlorpromazine과 Seranace?? 근주의 효과비교

권영재,백인호 대한신경정신의학회 1979 신경정신의학 Vol.18 No.4

In this study, a comparative evaluation on clinical efficacy between parenteral chlorpromazine and serenace?? for acute psychotics brought to the emergency psychiatric unit was made. Subjects were consisted of 39 cases of psychotics including 21 males, 18 females they were under double-blind procedure given single injections of 50 mgms of chlorpromazine (20 cases) and 5 mgms of serenace?? (19cases) separately. The effects were evaluated globally for overall effects as well as by the Brief Psychiatric Rating Scale (BPRS) for target signs and symptoms. The results were as follows 1. Of the 20 cases who received chlorpromazine, 17 cases (85%) were noted to be their symptoms under led controlled or partially under controlled. 2. Of the 19 cases who were administered with serenace??, 11 cases (58%) become under or partially under controlled while 6 cases (32%) shows few signs of response including 2 cases (10%) were noted to be even worse. 3. Results of BPRS evaluation was applied to them 60 min. after the injection showed the reduction of the total mean BPRS scores for the signs and symptoms. When compared the two group on the reduction chlorpromazine group was significantly remarkable than serenace?? group. 4. Covariant analysis of the data for 60 min. after the injections chlorpromazine was also noted to be significantly superior than serenace?? partially for the control of somatic coecern, conceptual disorganization and unusual thought content. Results of the above mention comparison suggests that chlorpromazine were felt to be the drug of choice in psychiatric emergencies requiring the use of an antipsychotic agent. Serenace?髥? Haloperidol

정신분석이론에 대한 기독교적 비판

권영재 한국성경적상담학회 2001 성경과 상담 Vol.1 No.-

테이퍼 전송선 원리를 이용한 불균일 굴절률 광여파기의 해석 및 설계

권영재,장호성,임성규,오명환 대한전자공학회 1997 電子工學會論文誌, D Vol.d34 No.9

Optical filters with graded index profiles are designed by applying the fourier transform to a riccati equation which governs the reflection and transmission characteristics of inhomogeneous refractive index distributions. The inhomogeneous refractive index profile of an optical filter with specified target spectrum is obtained through iterations. The spectra response of the inhomogeneous refractive index layers are analyzed by using runge-dutta numerical method to solve the differential euations of the amplitude and the phase of reflection coefficient derived from the riccati equation and the results are in good agreement with the resutls obtained by using matrix method.

수평 및 수직 윤곽선을 개선한 적응 주사선 보간 알고리즘 및 구현에 관한 연구

권영재,박노경,문대철,Kwon, Yong-Jae,Park, No-Kyung,Moon, Dai-Tchul 한국전기전자학회 1998 전기전자학회논문지 Vol.2 No.2

Currently NTSC, PAL, and SECOM are widely used for TV broadcasting systems. In Korea, NTSC has been used to reduce transmission bandwidth and broadband flickers using the Interlaced scanning method. Image data in the Interlaced scanning method require De-interlacing compensation for PC-based multimedia applications. The existing compensation algorithms such as ZOI, FOI, and ELA provieds simple computations and effective image compensation while the PSNR is low and horizontal and vertical edges are hardly detected. In this paper, the ADI(Adaptive De-Interlacing) algorithm that can increase PSNR and detect horizontal and vertical edges is proposed and a hardware system is implemented using three ACTEL 1020B FPGA chips. The system consists of the algorithm part implemented using two FPGAs and the memory control part implemented using rest one. Also the system operation is investigated for real time processing.

실시간 말벌 탐지를 위한 향상된 타일링 기법

권영재,정윤주,이철희 한국양봉학회 2022 韓國養蜂學會誌 Vol.37 No.3

In order to effectively control wasps, which are the main cause of damage in beekeeping, a monitoring system that can check the appearance of wasps in real time is necessary. Convolutional Neural Networks (CNNs), currently widely used in the field of object recognition, cannot successfully detect and classify small objects such as wasps. When a wasp is photographed at a distance of 40 cm with a 4K-camera, the size of the wasp is only 2~3% of the total image. Therefore, in order to increase the recognition accuracy of small objects, we use a tiling method to detect wasps by dividing the image into 3×3. In the traditional tiling methods do not recognize objects located on the divided boundary well. In order to improve the object recognition performance of the tiling method, we propose an improved tiling method that additionally detect a partial area centered on the boundary line in the original image when there are some objects on the tile boundary line. We evaluated the performance of the proposed tiling method using the YOLOX model after producing 7,505 4K resolution images in which 5 species of wasps and 1 type of bee were randomly placed on a 3×3 tile boundary. In experiments on image data created for wasp object recognition training, the PASCAL VOC mAP of traditional tiling methods was 3.28%. However, the mAP of the proposed tiling method was 14.14%, which showed better performance of the proposed tiling technique in terms of accuracy.

우리들이 꿈꾸는 방학 -설마 이번 방학에도 공부는 아니겠죠?-

권영재,김시연,김준영,안선우,한희주 초록우산 어린이재단(구 한국복지재단) 2015 보고서 Vol.2015 No.1

말벌 검출의 정확성 향상을 위한 YOLOX의 개선된 구조 제안

권영재,이철희 한국멀티미디어학회 2023 멀티미디어학회논문지 Vol.26 No.10

In this paper, an advanced backbone structure for YOLOX is proposed to obtain better detection accuracy in small object detection such as hornet by replacing CSPLayer with ShuffleLayer. By this replacement, numbers of convolution operation are reduced in each layer of the backbone. This can conserve spatial information of small objects in each layer and through layers in backbone, reducing processing time. In order to evaluate the proposed method, four types of experiments were executed such as mAP comparison for our hornet dataset, another mAP comparison for the standard dataset VEDAI dedicated small objects, generalization test for RTMDet, and detection speed between the default YOLOX model and the proposed YOLOX model. As a result, the first mAP under 50% IoU condition for the hornet dataset showed 86.21% and 87.35% for the default and the proposed, respectively. The experiment, mAP test for the standard VEDAI, represented 47% and 41.7% for each model and also showed better accuracy by 5.3%. In the generalization test with RTMDet, the proposed model showed similar or higher accuracy according to IoU. In addition, in terms of speed the proposed ShuffleLayer- based backbone was faster than the default by 1.35 times due to reduced convolution parameters. Thus, experiments above verified that the proposed backbone structure for YOLOX can be effectively utilized to enhance accuracy and inference speed in real-time detection for small objects.

해상 환경 변화 모의 시뮬레이터 개발

권영재,굴오스만,이병주,김태성,이문진,박인규 해양환경안전학회 2023 해양환경안전학회 학술발표대회 논문집 Vol.2023 No.11

MA 로 제조된 Al 기 합금의 분산물의 부피 분율과 분산물의 형태가 피로성질에 미치는 영향

권영재,조준식,권숙인 대한금속재료학회 1991 대한금속재료학회 학술대회 개요집 Vol.1991 No.0

다결정 Si기판 위에서의 Co/Ti 이중층의 실리사이드화

권영재,이종무,배대록,강호규,Kwon, Young-Jae,Lee, Jong-Mu,Bae, Dae-Lok,Kang, Ho-Kyu 한국재료학회 1998 한국재료학회지 Vol.8 No.7

P가 고농도로 도핑된 다결정 Si 기판 위에 Co/Ti 이중층막을 스퍼터 증착하고 급속열처리함으로써 얻어지는 실리사이드 층구조, 실리사이드막의 응집, 그리고 도펀트의 재분포 등을 단결정 Si 기판 위에서의 그것들과 비교하여 조사하였다. 다결정 Si 기판위에 형성한 Co/Si 이중층을 열처리할 때 단결정 기판에서의 경우보다 $CoSi_2$로의 상천이는 약간 더 낮은 온도에서 시작되며, 막의 응집은 더 심하게 일어난다. 또한, 다결정 Si 기판내의 도펀트보다 웨이퍼 표면을 통하여 바깥으로 outdiffusion 함으로써 소실되는 양이 훨씬 더 많다. 이러한 차이는 다결정 Si 내에서의 결정립계 확산과 고농도의 도펀트에 기인한다. Co/Ti/doped-polycrystalline si의 실리사이드화 열처리후의 층구조는 polycrystalline CoSi2/polycrystalline Si 으로서 Co/Ti(100)Si을 열처리한 경우의 층구조인 Co-Ti-Si/epi-CoSi2/(100)Si 과는 달리 Co-Ti-Si층이 사라진다. Silicide layer structures, agglomeration of silicide layers, and dopant redistributions for the Co/Ti bilayer sputter-deposited on the P-doped polycrystalline Si substrate and subjected to rapid thermal annealing were investigated and compared with those on the single Si substrate. The $CoSi_2$ phase transition temperature is higher and agglomeration of the silicide layer occurs more severely for the Co/Ti bilayer on the doped polycrystalline Si substrate than on the single Si substrate. Also, dopant loss by outdiffusion is much more significant on the doped polycrystalline Si substrate than on the single Si substrate. All of these differences are attributed to the grain boundary diffusion and heavier doping concentration in the polycrystalline Si. The layer structure after silicidation annealing of Co/ Tildoped - polycrystalline Si is polycrystalline CoSi,/polycrystalline Si, while that of Co/TiI( 100) Si is Co- Ti- Si/epi- CoSi,/(lOO) Si.