무선 근거리 통신망에 적용 가능한 정보보호 규격

염흥열,윤호선,김상필,이강석 순천향대학교 부설 산업기술연구소 1997 순천향 산업기술연구소논문집 Vol.3 No.2

본 논문에서는 무선 근거리 통신망에서의 프로토콜 구조를 분석한 후, 이를 바탕으로 무선 근거리 통신망에 적용 가능한 정보보호 규격을 제시하고, 기존의 보안 알고리듬의 문제점을 제시하며 그에 대한 해결 방안을 제시하여 정보보호 서비스를 실현하기 위한 정보보호 메카니듬을 도출한다.

人工海水에 의한 複合組織鋼의 表面腐蝕이 疲勞破壞强度에 미치는 影響

吳世旭,姜鎬珉,李悅宰 東亞大學校 大學院 1986 大學院論文集 Vol.11 No.-

The influence of seawater corrosion on fatigue life at low stress level appears to be larger than that at high stress level about M.E.F. dual phase steel. Especially, the variation-range between high stress level and low stress level is large in the sea bottom corrosion of 250 hours and 1000 hours about S-N curves. According to corrosion time and corrosion conditon the amount of reduction of fatigue limit and fatigue life is varied. Fatigue limit and fatigue life for sea surface corrosion condition is lower than those for sea bottom corrosion condition and the influence of sea surface corrosion of fatigue life is large. It is appeared the relation between fatigue length and the number of cycle is depended on stress level, corrosion time and corrosion condition and corrosion pits occurred by seawater corrosion are become the cause of micro-crack. The variation-range of the crack propagation rate for low stress level is larger than that for high stress level. Portions of these fracture surface don't occur plastic deformation by S.E.M observation. However, these are found quasi-cleavage fracture that occur seperate fracture.

공황장애에서 Paroxetine 단기약물치료가 심리적 상태에 미치는 영향

이소영,김지혜,김율리,강은호,이동수,유범희 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.3

Objectives : This study was designed to evaluate clinical effect of paroxetine treatment and to explore psychological Pre-dictors of treatment response. Methods : Patients (n=26) who met DSM-IV criteria for panic disorder with or without agoraphobia were treated by Pa-roxetine for 12 weeks. We assessed symptom improvement using Clinical Global Impression (CGI), and clinical characteristics using Anxiety Sen&itivity Index (ASI), Anxious Thoughts and Tendencies (AT & T), Agoraphobic Cognition Questionnaire (ACQ), Body Sensation Questionnaire (BSQ), Beck Anxiety Inventory (BAI), and Beck Depression Inventory (BDI). T-test, correlation analysis, and stepwise multiple regression analysis were performed. Results : Panic patients showed significant improvement in seventy of illness and each clinical characteristic after 12 weeks of paroxetine treatment. There were significant correlations among severity of illness, anxiety, and depression, and subjective seventy was related with catastrophic thoughts. The more catastrophic thoughts and the higher sensitivity of body sensation, Patients had the worse symptom improvement they shorved. Multiple regression analysis showed that catastrophic thought related to agoraphobia was the best predictor of symptom improvement (22%). Conclusion : This study suggests that short-term treatment of paroxetine is effective in panic disorder with or without ago-raphobia, and that catastrophic thought could be a predictor of poor treatment response. Thus cognitive intervention on Catastro-phic thoughts may play an important role in symptom improvement in panic disorder.

공황장애에서 Paroxetine 단기약물치교가 심리적 상태에 미치는 영향

이소영,김지혜,김율리,강은호,이동수,유범희 大韓神經精神醫學會 2004 신경정신의학 Vol.43 No.3

Effects of Pyruvate Supplementation and Exercise Training on Body Composition of Obese Zucker Rats

( Kang Ho-youl ) 한국체육학회 1998 한국체육학회지 Vol.37 No.1

본 연구는 운동 트레이닝과 pyruvate의 섭취가 비만한 Zucker 쥐의 신체조성에 미치는 영향을 조사하는데 있다. 실험집단은 control diet(Con), Control diet/training (Con-Tr), pyruvate diet(Pyr), 그리고 pyruvate diet/training(Pyr-Tr)으로 구성되었다. Control diet는 단백질 22.0%, 지방 12.2%, 그리고 탄수화물 65.8%으로 분말로 혼합되었다. Pyruvate diet가 control diet와 다른 것은 탄수화물에서 6.5%의 dextrose를 제거한 후 같은 열량의 Ca^(++)-pyruvate로 대치하였다. 트레이닝은 8주동안 실시하였으며, 운동강도는 점진적으로 증가 시켜 운동시작 5주부터 경사도8%, 22m/min, 18min, 5 interval에서 훈련을 실시했다. 음식물 섭취량과 체중을 매일 측정하여 calorie-conversion 효율을 계산하였다. 실험 5주째 혈중 지질을 측정한 후, 안정시 호흡가스를 분석하여 산소섭취량, RER, 기초대사율을 측정했다. 실험 마지막 주에 전기저항법과 carcass 분석에 의해 % body fat를 측정하고, 그리고 간의 글리코겐과 중성 지방량을 측정했다. Pyr과 Pyr-Tr은 Con에 비해 체중 증가와 calorie-conversion 효율이 낮았다. 간의 중성지방에서 Pyr과 Pyr-Tr은 Con과 Con-Tr에 비해 거의 2배가 높았다. 혈중 triglycerides에서 Pyr과Pyr-Tr은 Con과 Con-Tr에 비해 유의한 감소하였으나, 혈중 총 콜레스테롤과 HDL-C는 Pyr과 Pyr-Tr이 Con과 Con-Tr보다 유의하게 높았다. 안정시 산소소비량은 Con-Tr이 다른 집단보다 유의하게 높았고, 기초대사율(㎉/min/㎏)은 Con이 다른 집단에 비해 유의하게 낮았다. RER은 Pyr이 Con보다 유의하게 낮았다. % body fat에서 Pyr이 Con보다 약간 높았지만 유의한 차는 없었지만, Con-Tr은 Con보다 유의하게 낮았다. 또한 Pyr-Tr의 % body fat은 Con-Tr과 Con과의 비교에서 유의한 차이는 없었지만, Pyr 보다는 유의하게 낮았다. 따라서 본 연구의 결과는 pyruvate의 섭취가 지방감소와 관계있는 대사기전에 영향을 주지만, 운동 트레이닝처럼 신체조성의 변화는 야기시키지 못한 것으로 나타났다. The effects of exercise training, pyruvate supplementation, and the combination of these two treatments were examined on body composition of obese (fa/fa) Zucker rats. Obese rats were randomly assigned to one of the following groups: control diet (Con), control diet/training (Con-Tr), pyruvate diet (Pyr), or pyruvate diet/training (Pyr-Tr). The control diet consisted of 22.0% protein, 12.2% fat, and 65.8% carbohydrate. The pyruvate diet was the same as the control diet except Ca^(++)-pyruvate was substituted for 6.3% of the carbohydrate (dextrose). Training consisted of treadmill running 5 intervals of 18 min duration at a speed of 22 m/min 5 days per week for 8 weeks. Daily food consumption and weight change were recorded for the entire experimental period to determine calorie-conversion efficiency. After 5 weeks of treatment, plasma lipids were measured, followed a week later by expired gas analysis from which resting VO₂, respiratory exchange ratio (RER), and caloric expenditure were determined. In the last week of experimentation, liver glycogen and triglyceride concentrations were measured and body composition was analyzed by both carcass analysis and EM SCAN (electromagnetic impedance). Pyr and Pyr-Tr rats exhibited less weight gain and lower calorie-conversion efficiency relative to Con rats. Liver triglyceride concentrations in Pyr and Pyr-Tr rats were almost 2-fold greater than Con and Con-Tr rats. Pyr and Pyr-Tr rats had significantly lower plasma triglyceride levels than Con and Con-Tr rats, but significantly greater plasma total and HDL cholesterol concentrations. Resting VO₂ (㎖/min/㎏ and ㎖/min/㎏FFM) was significantly greater in Con-Tr rats than Con, Pyr, or Pyr-Tr rats. Basal caloric expenditure (㎉/min/㎏) was significantly greater in Con-Tr (0.064 0.008 ㎉/min/㎏), Pyr (0.060±0.007 ㎉/min/㎏), and Pyr-Tr (0.061±0.008 ㎉/min/㎏) rats than Con rats (0.057±0.012 ㎉/min/㎏). Pyr rats had significantly lowered RER values than Con rats. Relative body fat in Pyr rats (44.3±0.8 %) was slightly greater than that in Con rats (42.5±1.0 %), whereas Con-Tr rats (38.6±0.9 %) had significantly lower percent of body fat than Con rats (42.5±1.0 %). In addition, Pyr rats had significantly greater percent body fat that Pyr-Tr rats (41.1±0.4 %) which was not significantly different from those of Con and Con-Tr. These results suggest that pyruvate supplementation causes some metabolic alterations associated with fat reduction, but does not alter the body composition unlike high intensive exercise training.

(The)effects of 3-carbon diets on appetite and metabolic responces of rat

Kang, Ho-Youl 경북대학교 체육과학연구소 1996 체육과학연구지 Vol.12 No.-

The implication of foods and supplements for exercise Performance : Influence of starch , starch - protein , glucose and glucose - protein ingestion before exercise on glycemic , insulinemic , and substrate oxidation responses

(Ho Youl Kang) 한국운동영양학회 2000 2000 International Congress on Exercise Nutrition Vol.- No.-

Disciplinary Sport Physiology - : The Effects of Exercise Training on Body Composition of Obese Zucker Rats

Ho Youl Kang,Soo Chun Lee,Duk Il Park,Bong Ann Kwan,J . L . Ivy 한국체육학회 1995 국제스포츠과학 학술대회 Vol.1995 No.-

Endogenous Anabolic Hormonal and Growth Factor Responses to Resistance Exercise in Ginseng and/or Carbohydrate Ingestion

Kang, Ho Youl 한국운동과학회 1999 운동과학 Vol.8 No.3

저항운동 시 탄수화물과 인삼의 섭취가 anabolic 호르몬과 IGF-I 반응에 미치는 영향. 운동과학, 제8권 제3호, 393-404, 1999. 동양에서 인삼은 하나의 약초로서 스테미나 증강과 빠른 부상회복을 위하여 많은 운동선수들이 섭취하고 있다. 하지만 인삼섭취로 인해 나타나는 다양한 ergogenic 효과에도 불구하고 적절한 연구가 부족하다. 따라서 남자 대학생 8명을 대상으로 웨이트트레이닝 후 비교처치(CON; water), 인삼(GIN; 20g ginseng extract), 인삼/탄수화물(GIN/CHO; 20g ginseng and carbohydrate 1.5g/㎏ body wt), 또는 탄수화물(CHO; 1.5g/㎏ body wt)을 섭취가 혈중 anabolic호르몬들에 미치는 영향을 조사하였다. 정맥의 혈액은 운동전과 운동직후 그리고 회복기 2시간 동안 채취하였다. 두 시간의 회복기동안 GIN/CHO와 CHO의 인슐린과 글루코스의 반응은 CON과 GIN보다 각각 유의하게 높았다. 그리고 코티졸의 반응은 회복기 60분에 GIN/CHO와 CHO이 CON과 GIN보다 각각 유의하게 낮았다. 모든 실험처지들은 테스토스테론과 IGF-I 반응에 유의한 영향을 미치지 못했다. 그리고 본 실험에서 측정된 모든 호르몬에서 CON과 GIN사이의 반응과 또는 CHO과 GIN/CHO사이의 반응에서 유의한 차이가 나타나지 않았다. 그러므로 웨이트트레이닝 후 인삼의 섭취는 혈중 호르몬에 유의한 영향을 미치지 못하였으며, 탄수화물이 섭취는 인슐린과 코티졸에 유의한 영향을 미치는 것으로 나타났다. Endogenous Anabolic Hormonal and Growth Factor Responses to Resistance Exercise in Ginseng and/or Carbohydrate Ingestion. Exercise Science, 8(3): 393-404, 1999. Ginseng, a heGrbal plant, has been ingested by many sport players in China, Japan, and Korea in order to improve their stamina and rapid recovery from injuries. However, due investigation has not been given to the ergogenic effects of ginseng. To examine the effects of ginseng and/or carbohydrate supplements on the hormonal stale, eight male college students were randomly given water (CON), 20g of ginseng root extract (GIN), carbohydrate (CHO; 1.5g/㎏ body wt), or ginseng-carbohydrate (GIN/CHO; 20g ginseng and carbohydrate 1.5g/㎏ body wt) treatment immediately after a standardized weight-training workout. Venous blood samples were drawn before and immediately after exercise and during 2h recovery. The exercise induced elevation in lactate and growth hormone immediately after exercise and at a 15 min postexercise, respectively. During the 2h recovery period, CHO and GIN/CHO treatments increased the level of plasma insulin and decreased that of plasma cortisol much more than CON and GIN treatments did. Experimental supplements had no effects on IGF-I and testosterone. No significant difference exists either between GIN and CON or between CHO and GIN/CHO on anabolic hormonal and growth factor responses. Therefore, these results suggest that the ingestion of ginseng root extract does not affect the hormonal status, but the carbohydrate consumption does affect the plasma insulin and cortisol concentrations during the recovery period and at the 60 min postexercise, respectively.

정상인에서 리컴번트(recumbent)와 직립(upright) 사이클 운동의 심폐반응 비교

류호열(Ho-Youl Ryu),이중희(Ho-Youl Ryu),윤종찬(Jong-Chan Youn),도일선(Il-Sun Do),윤도은(Do-Eun Yun),강석민(Seok-Min Kang) 대한심장호흡물리치료학회 2014 대한심장호흡물리치료학회지 Vol.2 No.1

Purpose : The purpose of this study is to compare cardiopulmonary exercise parameters during recumbent cycling(RC) and upright cycling(UC) in healthy subjects. Methods : The study population consisted of 12 healthy volunteers(male=7, mean age 29.7±5.7, female=5, 25.4±2.9 years old). Each subject was randomly assigned to perform RC or UC, and started workload at 10 watt and increased by maximal pedaling(to 100 watt). After taking a rest during 1 week, they performed cycling vice versa. Results : Baseline parameters including heart rate(HR), systolic blood pressure(SBP) and rate pressure product(RPP) are comparable between RC and UC group. Submaximal SBP(138.1±10.8 vs. 151.3±15.9 mmHg, p=0.027), submaximal RPP (15244.2±1860.8 vs. 17698.8±3325.4, p=.036), and maximal RPP(25328.3±3032.9 vs. 28443.8±3139.4, p=.022) in RC group were significantly lower than those of UC group. Peak VO 2 in RC group tends to be lower than UC group(27.2±3.6 vs. 29.5±2.8 mL/kg/min, p=.087). Conclusion : With similar exercise intensity, RC showed less cardiopulmonary stress compared with UC. These results provide the feasibility of RC based cardiac rehabilitation program in patients with heart failure or in elderly.