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교사와 지역주민의 의식조사를 배경으로 한 초등학교 복합화 계획방향에 관한 연구
이현수,오세규 대한건축학회 2003 대한건축학회논문집 Vol.19 No.11
This study aimes to suggest the validity and the basis of complex facilities in the elementary schools, and to propose the direction of effective complex facilities considering the requirements of residents, and necessities for education of students. As contents of analysis in this study, the conclusion obtained is as follows. In positiveness about complex, There are significant differences according to the density of population, earning, an age group, and existence/non-existence of regional facilities. As a result of investigation about validity, it agreed in low rate on the negatives about non-effectiveness of work and cost of maintenance, but it was totally positive in the complex effect. In a summery on a basis of contents on research analysis, the present elementary schools were not recognized as central facilities in the community. And as a solution about that, the plan of complex in the school facilities was considered as a method to increase the quality of students' lesson, to elevate the level of residents' welfare, and executing the lifelong education.
김기현,오상인,최여진,김민영,최규훈 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.4
In order to develop a confident sampling technique, we designed and constructed a 6-port manifold MFC sampling system for collecting gaseous pollutants in air. Using this instrumentation, we tested the performance criteria of MFC system in terms of: (1) flow rate; (2) MFC-to-MFC variability: (3) tube-to-tube variability: and (4) time. It was interesting to find that the later two factors did not show any significant variations, while the former two show substantially large variations. However, as most of those variabilities are consistent enough to form systematic patterns, we were able to explain the occurrence patterns of all those MFC biases in terms of those tour major variables. The overall results of our experiment suggest that one needs to use correction factor for each MFC unit under a given flow rate to maintain optimal accuracy and precision for sampling of those pollutants.
생체내 심근허혈-재관류 모델에서 멜라토닌의 재관류 부정맥에 대한 심근보호작용에 관한 연구
조규종,김원,홍정석,이미우,장성은,오세현,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4
Background: Recently, a few studies demonstrated that melatonin reduced the severity of myocardial reperfusion injuries, such as reperfusion arrhythmias. However, it is uncertain whether the melatonin reduces reperfusion arrhythmias in thus anesthetized animals because results were obtained using isolated hearts. Thus, to see whether melatonin reduces reperfusion arrhythmias in anesthetized animals, we examined the effect of melatonin on the incidence of reperfusion arrhythmias in an anesthetized-cat model of regional ischemia. Method: Adult mongrel male cats(n=30, 2.9∼4.2 kg) were anesthetized under positive-pressure artificial ventilation with room air. The animals of the control group(n=15) were subjected to 20-minute left anterior descending coronary artery(LAD) occlusion followed by abrupt reperfusion. The animals in experimental group(n=15) were divided into two. Group I(n=6) was pretreated with melatonin, 1 mg/kg, before occluding the LAD. Group II(n=9) was pretreated with melatonin, 10 mg/kg. The animals in experimental group were subjected to ischemia/reperfusion insult following drug treatment: melatonin was applied intra-peritoneally for 3 minutes just before LAD coronary artery ligation. The Fisher's exact test was used to compare the data from different animal groups. p<0.05 was considered significant. Results: The incidence of ventricular fibrillation(VF) during the reperfusion phase in group II(pretreated with melatonin, 10 mg) was significantly smaller than that in the control group(p-value = 0.0029). However, no statistically significant difference of VF incidence was found between group I(pretreated with melatonin, 1 mg) and the control group. Conclusion: Employing an anesthetized-cat model of regional cardiac ischemia, we investigated the dose-dependant effects of melatonin on reperfusion-induced arrhythmia. The cats pretreated with 10 mg/kg of melatonin before ischemia had a significantly reduced incidence of lethal reperfusion-induced arrhythmia, but there was no difference between the cats pretreated with 1 mg/kg of melatonin before ischemia and the control group.
추연규,김현덕,박종오 진주산업대학교 산업과학기술연구소 2003 산업과학기술연구소보 Vol.- No.10
The forces and moments at the aircraft c.g. have components due to aerodynamic sffects and to engine thrust. For the flight stability and autopilot systems we present a attitude control method using an intelligent control algorithm Which is based on the control rules from experts knowledge concerning the motion equations and other experiences. Then a robust fuzzy cintroller is developed to control the flight attitude. The controller can deal with multiple inputs and outputs. We have made an aircraft model and the orientation sensor for experimental fights. The control rules based on the flight expert's experience and knowledge can be programmed by fuzzy rules, and determined control rules by experimental flight. We can be stable attiude control by fuzzy controller.
김병규;전태주;박지영;서희영;오태훈;김현정 인제대학교 2011 仁濟醫學 Vol.32 No.-
Syphilis is a chronic systemic infectious disease caused by Treponema pallidum. Syphilitic involvement of the stomach can occur via the blood flow in the primary or secondary period of syphilis, but its incidence is very rare. Gastric syphilis should be considered in patients at risk of sexually transmitted disease who complains of abdominal pain, nausea and vomiting and in whom unusual endoscopic or radiographic features are found. Because gastric syphilis has no pathognomic clinical findings and it can simulate gastric cancer or lymphoma, it’ s not so easy to diagnose. If diagnosed, however, gastric syphilis can be easily treated with proper antibiotics. We report on a case of gastric syphilis that manifested epigastric pain, anorexia and weight loss. It was initially thought to be lymphoma, but it was correctly diagnosed by serologic testing and progress.
베이스 구조물 진동을 고려한 스테이지 입력성형기법 적용에 관한 연구
김형기,권오영,배규현,홍성욱 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
A base structure which mounts positioning stages is often subjected to vibration due to the reaction force against the stage motions. This paper deals with an input shaping method for positioning stage in consideration of vibration base structures along with the stage vibration. A dynamic model is established to investigate the vibration of positioning stage and base structure. Two input shapers, a conventional input shaper and a new input shaper, are applied to eliminate both the residual vibrations in base structure as well as positioning stage. Simulations show that the input shaping methods effectively remove the residual vibrations.
윤재철,김원,조규종,홍정석,이미우,장성은,오세현,임경수 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4
Primary aldosteronism is a syndrome characterized by hypertension, hypokalemia, suppressed plasma renin activity, and elevated serum aldosterone levels. Conn first described it 1955 in association with adrenal cortical adenoma(Conn's syndrome). Today, it can be divided into at least six distinctive sub-groups. The diagnosis of primary aldosteronism is usually suspected when the patient presents with poorly controlled hypertension with hypokalemia. The main issues in the evaluation of primary aldosteronism are to differentiate an adenoma from hyperplasia and to localize the adenoma. Basic hormonal studies and computed tomographic(CT) scanning can be used effectively for that differentiation. An adenoma is one of a few potentially curable forms of hypertension, and it is best treated by removing the adrenal tumor. We experienced a case of a typical adrenal adenoma. The patient was a 37-year-old male who had experienced in both his legs over a period of several days a weakness due to hypokalemia. He was diagnosed using basic hormonal studies and adrenal CT scanning. After, he received laparoscopic adrenalectomy and was discharged with improved condition.