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줌렌즈를 갖는 4자유도 마이크로 조립 시스템을 위한 비주얼 서보잉
이덕영(Duk-Young Lee),조형석(Hyungsuck Cho),강희석(Heiseok Kang),조영준(Youngjun Cho) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This paper presents a method of micro assembly using visual servoing with automatic zooming. Generally, microassembly using visual servoing has two serious problems due to high magnification lens; small field of view and small depth of focus which does not appear in macro domain. In this work, the former is solved by using a motorized zoom lens which can change the field of view and the resolution of the camera, and the latter using auto-focusing method. The proposed microassembly process is composed of two steps; coarse visual servoing and fine visual servoing. In order to verify the performance of the proposed algorithm, a series of the experiments are performed on assembling optical fiber onto V-grooves in the optical fiber array.
소화성 궤양환자에서 일주일 삼중병합요법에 의한 H. pylori의 제균효과
이종현,김선영,이진관,박경현,허충,이덕영 대한소화기학회 1997 대한소화기학회지 Vol.30 No.2
Background/Aims: Since eradication of H. pylori proved to prevent the recunence of peptic ulcer disease, numerous therapeutic trials have been introduced. One of them, MOC (metronidazole, omeprazole, clarithromycin) protocol seems to be very desirable and widely recommended because of its high eradication rate, short term treatment and good drug compliance. The aim of this study was to evaluate the efficacy of this therapeutic modality in Korean patients. Methods: One hundred and fourteen patients including 72 patients ot' duodenal ulcer, 27 of gastric ulcer, 2 of pyloric channe] ulcer, and 13 of combined ulcer were included. The patients received omeprazole 40 mg, clarithroycin 500 mg, and tinidazole 1,050 mg daily for 7 days. Endoscopy was performed 1 moonth after the end of treatment and then biopsy specimens were taken in antrum near the pylorus. Urease test and Warthin Starry silver stain were conducted concordantly. Also the patients were asked whether they experienced any untoward effects by this regimen. Results: One hundred and eight out of 114 patients were healed of their ulcers, representing 94.7% of ulcer healing rate. The eradication rate of H. pylori was 93.0%. No statistic difference of H. pylori eradication rate was seen among age, site of ulcer, number of bacteria, and history nf recurrence. But low eradication rate was observed in female gender. Tolerabilty to this regimen was good and most of the patients were satisfied. No severe untoward side effect was seen. Conclusions: Seven day MOC regimen turned out effective and tolerable for eradication of H. pylor and healing of peptic u]cer. Good drug compliance seems to be based on short course of treatmment, b.i.d regimen and lower doses of the antibiotics. But low eradication rate in female gencler which seems probably to have metronidazole resistence requires further study. So it should be considered that regimens including metronidazole such as MOC would not be acceptable in Korean women who had previously been exposed to metronidazole.