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Su‑Jin Lee,김성일,Pil‑Wan Han,김창업 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4
This paper deals with the characteristics analysis of 3-phase induction motors for electric power steering applications by combining fnite element analysis with an equivalent circuit model. Induction motors for automobiles have high magnetic saturation due to size limitations. Accordingly, to improve the accuracy of the equivalent circuit analysis, it is necessary to consider the magnetizing reactance according to the magnetizing current. An equivalent circuit analysis method that takes into account the magnetic saturation of 3-phase induction motors is proposed and verifed through a test.
전자구개도(EPG)를 이용한 한국어 치경마찰음 /ㅅ, ㅆ/의 조음운동적 특성
김지영(Ji-Yeong Kim),우승탁(Seong-Tak Woo),김미진(Mi-Jin Kim),오다희(Da-Hee Oh),김수진(Su-Jin Kim),하지완(Ji-Wan Ha) 한국언어청각임상학회 2021 Communication Sciences and Disorders Vol.26 No.2
배경 및 목적: 본 연구는 전자구개도를 사용하여 한국어의 치경마찰음인 /ㅅ/와 /ㅆ/를 조음운동적 측면에서 비교 분석해보고, 치경마찰음 조음 시 나타나는 혀-구개 접촉에 관한 정보를 제공하기 위한 목적으로 시행되었다. 방법: 한국어가 모국어이며 발음에 문제가 없는 정상 성인 5명이 전자구개도를 착용하여 치경마찰음을 분절음 차원에서뿐 아니라 단어 내 위치 및 모음문맥을 달리하여 녹음한 후 팰라토그램을 분석하였다. 결과: 그 결과, /ㅅ/와 /ㅆ/는 협착의 너비와 혀-구개 최대접촉구간에서 유의한 차이를 보였다. /ㅆ/에서 협착의 너비가 더 좁고 전체 혀-구개 접촉구간은 더 넓게 나타났다. 단어 내 위치에 따른 차이는 유의하지 않았지만, 고모음인 /ㅣ/ 문맥에서는 저모음인 /ㅏ/에 비해 협착의 위치가 후방화되었으며, 지속시간도 가장 긴 것으로 나타났다. 또한 혀-구개 접촉 구간도 가장 넓게 나타났다. 논의 및 결론: 본 연구는 전자구개도를 사용하여 한국어 치경마찰음의 혀와 구개 접촉에 관한 정보를 제공했다는 점에서 그 의의를 갖는다. 또한 본 연구의 결과는 한국형 전자구개도의 개발의 기초자료로써 그 의미가 있다. Objectives: The present study is aimed an electropalatographic investigation of Korean fricatives /s/ and /s*/. All data from this study is based on the production of 5- adult speakers who speak Korean as their first language. Methods: Electropalatography (EPG) is an instrumental technique for showing tongue and palate contact during speech. The participants recorded /s/ and /s*/ in CV (/si/, /sɑ/, /su/, /s*i/, /s*ɑ/, /s*u/) and VCV (/ɑsi/, /ɑsɑ/, /ɑsu/, /ɑs*i/, /ɑs*ɑ/, /ɑs*u/) context using EPG and then, four variables were analyzed: row of medial groove (RMG), medial groove width (MGW), medial groove length (MGL), and maximum contact frame (MCF). Results: There was significantly greater medial groove width and maximum contact frame for / s*/ compared to /s/. The difference between /si/ and /sɑ/ was also found in the row of medial groove, medial groove width and maximum contact frame. /si/ was produced further back, and had a longer medial groove length. Also, it showed more total tongue-palate contact than /sa/. Conclusion: A various range of palatal contact patterns were found between typical adults for perceptually normal /s/ and /s*/. The results provided the information about tongue–palate pattern of Korean fricatives /s/ and /s*/. These findings would be utilized to build the basic data and useful information for Korean EPG system.
복합운동 프로그램이 비만여성의 신체조성과 식욕조절 호르몬에 미치는 영향
김수민,김병완,송영은 대전대학교 기초과학연구소 2016 自然科學 Vol.30 No.-
The purpose of this study is to identify effects of 12 weeks walking-resistance exercise and running-resistance exercise on body composition and appetite regulating hormones. Participants consist of 17 overweight women who are 40's and have higher than 30% of the percentage body fat. They are randomly divided into two groups; Walking and Resistance Group (WRG, n=9) and Running and Resistance Group (RRG, n=8). For the walking group, exercise intensity of walking is gradually increased by 50%-70% every 4 weeks. There are 4 exercise sessions a week. On the other hand, there are 4 exercise sessions provided for the running group. Each session lasts for 30 minutes. The exercise is performed with intensity of 60% HRmax, (from 1st to 4th week), 70% HRmax (from 5th to 8th week) and 75% HRmax (from 9th to 12th week). The common resistance exercises provided to both groups are Bench press, Lat pull-down, Leg extension, Triceps extension, Leg curl, Biceps curl, Calf raises and Sit-up, which are performed with 60-70% of 1RM. First, for the body composition, it is found that weight, BMI and percentage body fat of the WR group and the RR group are significantly decreased during the exercise period. Second, for appetite regulating hormones, leptin in both groups shows statistically significant decrease while ghrelin is significantly increased. According to the results of 12 weeks duration combined exercise for the Walking and Resistance Group and the Running and Resistance Group, it is shown that body composition has been positively changed and appetite regulating hormone are improved. Therefore, this study concludes that the combined exercise is effective to treatment of obesity.
Carbonyl 화합물에 대한 Trimethyl-Silylcyanide의 첨가 반응
한완수,박철영,이일규 中央大學校 自然科學硏究所 1988 自然科學硏究所 論文集 Vol.2 No.-
Trimethylsilylcyanide is found to be a good reagent for the formation fo trimethylsilylcyanohydrin ethers from the direct reaction with carbonyl compounds. To obtain organic cyanoderivatives, trimethylsilylcyanide was addes to vbarious carbonyl compounds (acetaldehyde, acetone, cyclohexanone, propiophenone, benzophenone) in the presence of Lewis acid catalysts at room temperature. Addition of small amounts of Lewis acid catalysts to the reactions increased the yields of trimethylsilylcyanide carbonyl addition products. The results of these reactions indicated that the yields in trimethylsilycyanide addition reaction to the highly hindered carbonyl compounds were affected by the nature of catalysts employed, and increased as below. AlCl₃>SnCl₄≫ZnCl₂
朴完洙,金亨煥,安德均,崔湖榮 대한본초학회 2002 大韓本草學會誌 Vol.17 No.2
Objectives : We have examined the vasoconstriction response to the various extracts of Crotonis Fructus (CF, Seed of Croton tiglium L.), defatted CF (DCF), roasted CF (RCF), and Croton oil in rat isolated thoracic aorta. Methods : We have examined the thoracic aorta segments obtained from rats immediately after delivery were mounted in organ baths superfused on a polygraph. Results : We found that the thoracic aorta segments responded to various extracts of CF with a dose-dependent vasoconstriction. In comparison to the 100 mM KCl induced contraction, it was contracted by 150% (water extract of CF), 144.5% (70% ethanol extract of CF), 80.1% (water extract of DCF) and 96.6% (ethanol extract of DCF) after addition of the 3 mg/ml each extract. The thoracic aorta segments were contracted by 118.5% (0.01 mg/ml Croton oil), 133.8% (3 mg/ml RCF for 10min), 123.1% (20min), 117.8% (30min), and 103.9% (40min). Conclusions : In the conclusion, CF, DCF, and RCF induced dose-dependent contraction in the isolated rat thoracic aorta. And it's major component, Croton oil, has potent vasoconstriction effect.
장완식,신광수,백은석 조선대학교 생산기술연구소 1996 生産技術硏究 Vol.18 No.1
This paper presents three-dimensional robot task using the vision control method. A minimum of two cameras is required to place points on end effecters of n degree-of-freedom manipulators relative to other bodies. This is accomplished using a sequential estimation scheme that permits placement of these points in each of the two-dimensional image planes of monitoring cameras. Estimation model is developed based on a model that generalizes known manipulator kinematics to accommodate unknown relative camera position and orientation, etc. This model uses six uncertainty-of-view parameter estimated by the iteration method. The method is tested experimentally with three-axis manipulator in two ways; a) the estimation model test, b) a three-dimensional point placement task. These results show that control scheme used is precise and robust.
이용완,오수일 江原大學校附設體育科學硏究所 1994 江原大學校附設體育科學硏究所論文集 Vol.- No.18
This study was tried to be analyzed in the object of ninety five games, ninety eight schools had joined in three competitions in order to find out hits-made-percentage according to ball count in these high school baseball games. The conclusions to this analysis were as follows. 1. Hits-made-ratio (HMR) according to the ball count. HMR was the highest when the ball count was no ball, no strike (0-0) and as a whole hits were made within the third ball. But batting average was over 30% when ball count was advantageous for hitters. Each team in each game produced 7.99 hits on the average and hit more than one when ball count was no ball, no strike (0-0) and one ball, one strike (1-1). Thes was almost the same as HMR. Superior schools in the competitions were higher than non-superior schools in HMR and Batting Average. 2. HMR according to the base-runner or no base-runner HMR was high in case runner was on no base, but BA was high when runner was no bases. These were almost same between superior them and non-superior team, but superior teams were high in batting ability irrespective of runner. 3. HMR according to the ball count when there is base runner or not. HMR and BA was high irrespective of runner in third ball of pitcher. In HMR there is little difference batween superior team and non-superior team, but in BA superior team was high under the various ball counts. 4. HMR according to the pitched number. HMR according to the pitched number was produced within the third ball of pitcher. 5. HMR according to ball count was high in the first ball of pitcher. Especially when ball count was advantageous for hitter, percentage of slugging very frequent. This tells that slugging gives a great influence on winning the game. 6. Bases on balls, hit by pitched ball, sacrifice hits, batting obstruction, errors and strikeouts according to the ball count. Bases on balls was so high in 3-2 that hitters was patient, and hit by pitched ball, sacifice hits ans errors happened so often in 0-0 that discomfort of pitcher, bunt and discomfort of defence could be showed, in the first pitching. Stride-outs after two strikes is the reason why hitters was not flexible to the various changed balls.
조수진,박은애,유은선,김혜순,손세정,서정완,이승주,한후재 이화여자대학교 의과대학 2003 EMJ (Ewha medical journal) Vol.26 No.2
목적: 급성 파종성 뇌척수염은 감염이나 예방 접종 후 발생하는 중추 신경계의 급성 자가 면역 염증성 질환으로 탈수초를 일으킨다. 신경학적인 증상으로 발현되고 대부분 환전히 회복되지만 신경학적 후유증을 남기거나 사망 할 수도 있다. 이에 저자들은 본원에서 발생 한 14명을 분석하여 조기 진단과 치료에 도움을 주고자 하였다. 대상과 방법: 1998년 3월부터 2003년 8월까지 이대목동병원에서 급성 파종성 뇌척수염으로 진단 받은 14명의 의무기록을 후향적으로 조사하였다. 결과: 환자들의 평균 발생 연령은 5±7.8개월이였고, 특정계절이나 연도에 집중되어서 나타나지는 않았다. 선행질환은 주로 비특이적인 상기도 감염이 가장 많았고, 초기증상으로는 경련이 가장 많았다. 그 외에 의식저하나 운동장애도 있었다. 뇌척수액 검사에서 백혈구 증가증이 발견된 경우는 있었으나 단백이 증가된 경우는 없었다. 뇌 자기공명 촬영에서 T2 증강시 뇌백질과 기저핵에 고음영의 다발성 병소가 발견되었고 추적 촬영에서 대부분에서 소실되었다. 뇌파 검사가 시행되었던 경우 전반적인 서파가 가장 많았고 국소적인 극파가 나온 경우도 한 명 있었다. 환자들은 정맥 면역 글로블린과 메틸프레드니졸론으로 치료하였고 치료 시작 후 3~7일내 증상이 호전되었다. 모든 환자를 2달 이상 추적 관찰하였고 항경련제가 지속적으로 필요한 정도의 경련성 질환이 두 명, 신경아교증이 남아잇는 경우가 한 명, 외래에서 다발성 경화증이 의심되는 경우가 한 명 있었다. 결론: 급성 파종성 뇌척수염은 침범 부위에 따라서 다양한 임상 상으로 나타나며 면역 글로블린과 메틸프레드니졸론이 치료에 효과적이였다. 본 연구에서는 대상 환자수가 적어 신경학적 후유증의 위험요소는 밝힐 수는 없으나, 예후는 검사소견과 연관되어 있지는 않았고, 대부분에서 양호하여 완전히 회복되었으나, 신경학적 후유증이 남은 경우도 있었다. Objective:Acute disseminated encephalomyelitis(ADEM) is an acute demyelinating autoimmune inflammatory disease of the central nervous system which develops after infection of vaccination. It may be fatal, and produce a permanent residual static disability or fully recover. We retrospec-tively studied 14 cases to investigate the clinical findings and outcome of ADEM. Methods : 14cases of ADEM diagnosed at Ewha Womans University Mokdong Hospital from 1998 to 2003 were retrospectively reviewed. Results : The age of onset was 5years±7.8 months and no seasonal clustering was found. The time of onset of symptoms was between 3 to 30 days. The preceding events were nonspecific upper respiratory infections in 9 cases, aseptic meningitis in 4 cases, and gastroenteritis in one case..The initial symptoms were seizure, altered consciousness, hemiparesis, fever, headache, and vomiting. Brain MRI showed multifocal high signal intensity lesions on T2 weighted image mainly in the cerebral whith matter, basal ganglia and periventricular white matter. EEG was performed in some cases and showed generalized or focal slow waves and only one case showed focal spikes. Patients were treated with IV globulin and methylprednisolone and the symptoms improved within 3-7 days after treatment. All patients were followed up for more than 2 months and most of them fully recovered except two. Conclusion : ADEM presents in various clinical manifestations depending on its involvement of the brain lesions. Most cases recovered fully but in some cases, residual permanent neurologic sequelae remained.
李琬夏,智雄吉,咸光洙 成均館大學校 1982 論文集 Vol.31 No.-
The absorption of salicylamide from the everted intestine of a rabbit in combination with ephedrine, and salicylamide alone and chlropheniramine, was examined. This examination was taken to method of cannulated everted sac technique and used to the Crane and Wilson appartus. The results were as follows: 1. The absorption of salicylamide in the everted intestine were incresed by the compound of ephedrine. 2. Also, the compound of chlorpheniramine was increased to the absorption of salicylamide. 3. Moreover, the compounds of chlorpheniramine and ephedrine were increased to the absorption of salicylamide. 4. In the region of intestine, the absorption of salicylamide showed most increased absorption in the middle region of intestine. 5. The intestinal transfer rate of salicylamide was 2.29 and the intestinal transfer rate of salicylamide of compound with chlorpheniramine and ephedrine was 3.42.