제 1형 신경섬유종증 환자에서 발생한 위장관 간질종양 1예

원경준,이준,변유미,조민근,한경택,김원,홍란,임성철,김경종,김영대,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2

Gastrointestinal stromal tumor (GIST) is the most common non-epithelial neoplasm arising in the gastrointestinal tract, but this tumor is rarely seen in association with type l neurofibromatosis (NFl) Generally, the majority of GISTs are isolated neoplasm and they are sporadically found in the stomach, but the GISTs in NFl patients are usually multiple and usually found in the small intestine. We report a case of multiple GISTs in the jejunum of a 63-year-old woman diagnosed as NFl accompanied by complication of gastrointestinal bleeding, In this case, Patient had multiple cafe-au lait spots and neurofibroma on skin and had freckling on axilla and groin, and then, we made a diagnosis of NFl. Gastrointestinal bleeding is controlled by resection of multiple GISTs. Generally, only 3-5% of all gastrointestinal bleeding comes from the small bowel. Causes of small intestinal bleeding are angiodysplasia, neoplasm, NSAIDs induced ulcer etc. but, If patients have NFl accompanied by complication of gastrointestinal bleeding, GISTs on small bowel must be considered.

성인형 당뇨병 환자에서 피부생검을 이용한 표피하 모세혈관 기저막 두께의 변화에 관한 연구

김원학,오금탁,김만우,장경식,채종구,조건국 朝鮮大學校 附設 醫學硏究所 1987 The Medical Journal of Chosun University Vol.12 No.1

Thickening and proliferation of capillary basement membrane is a generalized phenomenon in diabetes mellitus and has been described in many organs including heart, kidney, pancreas, retina etc. While such changes are specific, it is difficult to obtain specimens from those organs. We took the specimens from the medial surface of the thing of 33 diabetics and 4 healthy persons as controls by means of punch biopsy. The measurement carried out by normogram and electron microscopic technique. HbA_(1c) values were also measured simultaneously. 1. The HbA_(1c) values are higher in diabetics than in control group (p<0.01). 2. The subepidermal capillary basement membrane thickness of the diabetics : 30% of the 5 th decade population, 53.9% of the 6 rh decade population and 83.3% of the 7th decade population showed more rhan 3,000 A. Whereas all the controls showed below 3,000 A. 3. The subepidermal capillary basement membrane thickness did nor increase significantly with the duration of the disease. 4. In cases of high subepidermal capillary basement membrane thickness, HbA_(1c) showed significant increase. (p<0.01).

네트워크 지연시간을 고려한 CAN 기반 피드백 제어시스템의 응답특성 분석

전종만,김대원 明知大學校 産業技術硏究所 2002 産業技術硏究所論文集 Vol.21 No.-

The paper analyzes the response characteristics of the system when considering the message delay time for a message transfer in a CAN-based control system. The message delay time is composed of a computation delay time and a communication delay time. The application layer of CAN communication is modeled in order to analyze two kinds of delay time mathematically and the communication delay is re-defined under the limited conditions. The CAN-based feedback control system is proposed as a target system that is the machining system with three axes. The response delay characteristics of the proposed system is analyzed through simulation and is improved by the compensation using the PID tuning method to meet the design specification of the system.

천장관절 가동술이 신체중심 이동거리에 미치는 장도

공원태,한종만 대한정형도수치료학회 2005 대한정형도수물리치료학회지 Vol.11 No.1

The purpose of this study was to evaluate change of path length center of body on sacroiliac joint mobilization. The subjects were consisted of sixty healthy adult two decade(28 females. 32 males; mean aged 22.2) from 20 to 29. All subjects randomly assigned to the control group, sacroiliac joint mobilization group. sacroiliac joint mobilization group received sacroiliac joint mobilization for 2-3 minutes per day and three times a week during 3 weeks period. The study carried out to determine the change of path length center of body on sacroiliiac joint mobilization from July 1, 2004 through september 30, 2004. Active balancer(SAKAI EAB-100) was used to measure equilibrium ability. All measurements of each subjects were measured at pre-experiment and post-experiment. The results of this study were summarized as follows : 1. The WPL of control group, sacroiliac joint mobilization group was no significantly differences at pre-experiment but significantly reduced post-experiment(p<.05). The results of analyzed effects of WPL was significantly reduced between experiment type of control group, sacroiliac joint mobilization group according to pre-experiment and post-experiment(p<.05). 2. The UPL of control group, sacroiliac joint mobilization group was no significantly differences at pre-experiment but significantly reduced post-experiment(p<.05).The results of analyzed effects of UPL was significantly reduced between experiment type of control group, sacroiliac joint mobilization group according to pre-experiment and post-experiment(p<.05). Conclusionally these data suggest that a 3-week S-I joint mobilization improved equilibrium. Additional randomized controlled trials to more fully investigate treatment effects and factors that may mediate these effects are needed.

CAN 프로토콜을 이용한 네트워크 기반 제어 시스템의 구조 분석

전종만,김대원 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-

This paper analyses an architecture of network-based control system and deals with its application using the CAN protocol. It is difficult to determine an optimal network architecture for a specific system. In this paper, we propose the architecture of network-based control system applicable to a specific AGV system with manipulator arms. The fixed number of periodic messages to be occurred in pre-defined in this system. These messages are scheduled by applying the DMS algorithm. To determine whether the proposed system architecture is effective or not, we perform traffic analysis for the real-time communication of all messages. Through simulation, the possible maximum transmission speed is found and the number of possible sensors to be added is investigated for improving the system performance, when the sampling period of an analog sensor is determined under fixed condition that transmission speed is over 500Kbits/sec.

전기 화상 환자의 수술 전 평가,고압손상과 저압손상 비교

황정원,이정기,전영태,강종만,오용석,노규정,김현철 대한정맥마취학회 2004 정맥마취 Vol.8 No.1

패턴 특징과 색상 특징을 이용한 내용기반 영상검색

박종현,박순영,방만원 木浦大學校 工業技術硏究所 1999 工業技術硏究誌 Vol.9 No.-

In this paper, we propose an efficient content-based image retrieval method using the color and wavelet based pattern features. The pattern features are extracted from the invariant moments of the high-pass band image through spatial-frequency analysis of wavelet transform and color features are extracted from color histograms of the global image. The proposed image retrieval method is called a pattern and color feature based query(PCBQ). Forward PCBQ and backward PCBQ perform similarity matching of cascade form using the pattern and color features. The first step matching is carried out to find the candidate images which are most similar to the query image using the pattern or color features. The second step matching is executed using the feature vectors for the accurate retrieval from the candidate images of the first step. Weighted PCBQ performs weighted similarity matching of parallel form using the pattern and color features. The experimental results show that the proposed retrieval systems yield more improved retrieval accuracy than the previous methods.

유지-이완기법과 냉치료가 지연성 근육통에 미치는 효과

김종만,박장성,김원호,신헌석,김연중 한국전문물리치료학회 2000 한국전문물리치료학회지 Vol.7 No.1

Despite research to treat delayed onse muscle soreness(DOMS), no effective treatment has been reported. The purpose of this study is to investigate the effect of a hold-relax technique and cryotherapy on DOMS. Thirty-three subjects were randomly assigned to one of three treatment groups: control, hold-relax technique, or hold-relax technique and cryotherapy. DOMS was induced in the non-dominant biceps muscle through repeated eccentric contractions. Resting elbow joint position, flexion and extension(universal goniometer), pain(Visual Analogue Scale; VAS), and WBC count(blood analysis) were measured one hour before DOMS was induced and 24, 48, and 72 hours after DOMS was induced. The data were analyzed by repeated measure of two-way ANOVA. The results of this study were summarized as follows: 1) While analysis showed no significant differences between groups in relation to resting elbow joint position, there were significant differences over time, especially at 24, 48 hours after DOMS was induced compared with resting elbow joint position before DOMS was induced. 2) While analysis showed no significant differences between groups in relation to range of flexion, there were significant differences between rage of flexion before DOMS was induced and range of flexion 72 hours after DOMS was induced. 2) There were no significant differences between groups or over time in relation to range of extension. 4) While analysis showed no significant differences between groups in relation to VAS, there were significant differences over time in different hours. 5) There were no significant differences between groups or over time in relation to WBC count. 6) There were no interactions between groups or over time in all variables. This results suggested that hold-relax technique and cryotherapy were not effective to reduce DOMS.

韓國産 잎벌亞目(벌目)에 대한 系統分類學的 硏究 Ⅳ. 즐잎벌亞科에 대한 走査電子顯微鏡的 硏究

柳聖萬,崔元煐,李鍾郁 嶺南大學校 基礎科學硏究所 1993 基礎科學硏究 Vol.13 No.-

As a result of this study the Korean Selandriinae consist of 16 species, 7 genera including 4 newly recorded species, Strongylogaster macula, Aneugmenus temporalis, A japonicus and A. coronatus, from Korea.

웨이브렛 계수의 공간적 유사성을 이용한 비디오 영상 압축

문종현,방만원 木浦大學校 應用科學硏究院 2001 應用科學硏究誌 Vol.1 No.-

This paper presents a wavelet-based compression and decompression algorithm using spatial similarities of video sequences. The simulation results show that the proposed algorithm provides high compression ratio with proper image quality. It also outperforms the previous Hilton's algorithm in an image quality, compression ratio and running time, leading to compression ratio less than 0.2bpp, PSNR of 32 dB and running time of 10ms for a standard video image.