자전거 프레임 두께에 따른 내구 설계

한상근(Sang Geun Han),천세영(Se Young Chun),강성기(Seong Ki Kang) 한국기계가공학회 2015 한국기계가공학회지 Vol.14 No.6

The thickness of a stable and economical frame has been designed in order to reduce costs. Therefore, this study applied structural analysis and vibration analysis based on a comparison of the thicknesses of frames. Four types of frames (1㎜, 2㎜, 3㎜, and 5㎜) were modeled on a bicycle frame that has a length of 842㎜, a width of 100㎜, and a height of 400.5㎜, and all of these frames generated the stress and maximum deformation amount in the state and around the saddle. The maximum stress shown was 25.732 ㎫ in 1㎜, 11.79 ㎫ in 2㎜, and 8.2015 ㎫ in 3㎜, and the maximum deformation amount shown was 0.063611㎜ in 1㎜, 0.031978㎜ in 2㎜, and 0.022319㎜ in 3㎜. The natural frequency of the frame thicknesses 1㎜, 2㎜, and 3㎜ was estimated as within 270 ㎐. The critical frequency of conditions of 3㎜ was the biggest at 118.1㎐ compared with the 3-㎜ model; thus, 3㎜ was shown to have the most satisfactory resistance.

Validation of the iHealth-BP7 and Withings-BP800 blood pressure monitor for self-measurement according to the European Society Hypertension International Protocol revision 2010

안현성(Hyun-sung An),이정민(Jung-min Lee),강성기(Seoung-ki Kang) 한국체육측정평가학회 2016 한국체육측정평가학회지 Vol.18 No.3

이 연구는 iHealth-BP7와 Withings-BP800 무선 고혈압기기의 타당도를 검증하는 것에 그 목적이 있다. 해당 기기의 타당도 검증을 위하여 유럽 고혈압학회에서 제시한 검증도구(the European Society of Hypertension international Protocol revision 2010) 가 사용되었다. 성인 33명(30.8 ± 7.3 years)이 본 실험에 참여 하였고, 검증 도구 절차에 따라 자료수집이 이루어졌다. 정확한 혈압측정을 위해 모든 실험자들로 하여금 허리를 곧게 펴고, 다리를 꼬지 않은 채로 10분에서 15분 동안의 휴식을 취한 후, 본 실험에 임하도록 요구되어 졌다. 수은혈압계 (mercury sphygmomanometer) 와 자가 측정혈압계(iHealth-BP7, Withings-BP-800)가 혈압 측정을 위해 사용되었다. 수축기와 이완기 혈압을 포함한 모든 측정된 자료값은 유럽 고혈압학회 검증도구에 의해 검증되었다. 검증 결과, 수은 혈압계와 iHealth-BP7간의 평균차는 0.14 ± 6.01 mmHg (수축기)와 0.11 ± 4.99 mmHg (이완기)였고, 수은 혈압계와 Withings-BP800간의 평균차는 3.75 ± 4.61 mmHg (수축기)와 0.28 ± 4.93 mmHg (이완기)였다. 종합적으로 iHealth-BP7는 유럽 고혈압학회의 모든 검증절차를 통과하였지만, Withings-BP800은 통과하지 못하였다. 따라서 iHealth-BP7은 자가 측정에 있어서 유용한 혈압기로 판단되지만, Withings-BP800은 보다 다양한 대상자를 토대로 한 추후 연구가 필요할 것으로 판단된다. The purpose of this study is to validate the wireless iHealth-BP7 and Withings-BP800 monitors according to the European Society of Hypertension (ESH) International Protocol revision 2010. Data from 33 participants (30.8 ± 7.3 years) were initially examined according to the ESH International Protocol revision 2010 for the validation of blood pressure (BP) measuring devices. Participants were asked to sit and relax for 10-15 min with legs uncrossed, and back supported prior to the test. In all participants, sequential left arm measurements were performed by two trained observers using a mercury sphygmomanometer, and one supervisor using the device. Collected data were screened according to the ESH protocol for both systolic BP (SBP) and diastolic BP (DBP). The mean differences between the monitor and sphygmomanometer readings were 0.14 ± 6.01 mmHg (SBP) and 0.11 ± 4.99 mmHg (DBP) for the iHealth-BP7 and 3.75 ± 4.61 mmHg (SBP) and 0.28 ± 4.93 mmHg (DBP) for the Withings-BP800. The iHealth-BP7 monitor passed all of the requirements, however, the Withings-BP800 did not meet the second part of the criteria of the ESH international protocol. The iHealth-BP7 monitor is recommended as a valid home BP monitoring device, however, the Withings-BP800 fails to meet the ESH criteria.

여자 유도선수들의 훈련기와 휴식기에 따른 영양섭취 실태조사

천윤석 ( Yoon Seouk Chun ),강성기 ( Sung Ki Kang ),조현철 ( Cho Hyun Chol ),김종규 ( Kim Jong Kyu ),이근일 ( Keun Eil Lee ),권문석 ( Moon Seok Kwon ) 대한무도학회 2015 대한무도학회지 Vol.17 No.1

본 연구는 여자 유도선수들의 건전한 신체발달을 도모하고, 운동능력을 최대로 증진시키기 위해서 선수들의 훈련기와 휴식기에 따른 영양섭취 상태를 파악하여 선수 및 지도자들에게 운동 및 영양 교육 프로그램을 계획하고 실시하는데 기초 자료를 제공하는데 목적이 있다. 본 연구는 전국에 유도부가 있는 15개 고등학교에 재학 중인 여자유도선수들 119명을 대상으로 하였으며, 유도선수들이 섭취한 음식의 영양소(탄수화물, 단백질, 지방) 분석은 한국영양학회에서 제작한 컴퓨터 보조영양분석 프로그램(Computer Aided Nutrition Analysis Program: CAN-Pro 4.0)을 사용하였고, 산출된 자료는 SPSS 21.0 프로그램을 이용하여 평균과 표준편차를 산출하였다. 여자 유도선수들의 영양섭취 실태를 알아보기 위해 2-way(2RG×2RM) ANOVA를 실시하였고, 모든 유의수준은 p<.05로 설정하였다. 이와 같은 과정을 거쳐서 본 연구에서 도출된 결론은 다음과 같다. 체급으로 구분하여 분석한 내용을 살펴보면 총 에너지, 탄수화물, 동물성단백질, 식물성단백질, 포화지방산, 불포화지방산의 모든 변인에서 훈련기 보다 휴식기가 높았으며, 경량급 보다 중량급이 높은 것으로 조사되었다. 또한,총 에너지, 탄수화물, 불포화지방산에서 체급별 시기 간 상호작용효과가 나타났으며, 모든 변인에서 훈련기와 휴식기간 통계적으로 유의하게 높아지는 것으로 나타났다. 총 에너지, 탄수화물, 식물성단백질, 포화지방산에서는 집단 간 유의한 차이가 나타났다. The aim of this study is to figure out the nutrient intake according to the training phase and resting phase of players and to provide as basic data for planning and implementing sports and nutrient training program for players and instructors in order to promote sound physical development of female Judo players and to maximize exercise ability. To figure out nutrient intake status of female Judo players, 2-way(2RG×2RM) ANOVA were carried out. Using SPSS 21.0 program, average and standard variation of data were calculated, and nutrient intake status was figured out using CANpro 4.0 nutrient program. Where, the significant level was set as p<.05. The findings of the study are as follows. When it was analyzed by their weight division, all variables of total energy, carbohydrate, animal protein, vegetable protein, saturated fatty acid and non-saturated fatty acid were higher during the resting phase than during the training phase, and the heavy weight division was higher than the light weight division. And, interrelation effect appeared at total energy, carbohydrate and non-saturated fatty acid per period by the weight division, and there was statistically significant increase at all variables both for the training phase and the resting phase. There was significant difference in total energy, carbohydrate, vegetable protein and saturated fatty acid by groups.

각종 간 담도질환에서 혈청 CEA 농도 및 의의

김영민 ( Young Min Kim ),김상옥 ( Sang Ok Kim ),최인섭 ( In Sub Choe ),최규태 ( Kyoo Tai Choe ),이정남 ( Chung Nam Lee ),강성기 ( Sung Ki Kang ),김인숙 ( In Sug Kim ),손영애 ( Young Ae Son ) 대한내과학회 1981 대한내과학회지 Vol.24 No.12

패턴인식에 의한 기계부품 자동검사기술에 관한 연구

차보남(Bo-Nam Cha),노춘수(Chun-Su Roh),강성기(Sung-Ki Kang),김원일(Won-il Kim) 한국산업융합학회 2014 한국산업융합학회 논문집 Vol.17 No.2

This paper describes a new technology to develop the character recognition technology based on pattern recognition for non-contacting inspection optical lens slant or precision parts, and including external form state of lens or electronic parts for the performance verification, this development can achieve badness finding. And, establish to existing reflex data because inputting surface badness degree of scratch"s standard specification condition directly, and error designed to distinguish from product more than schedule error to badness product by normalcy product within schedule extent after calculate the error comparing actuality measurement reflex data and standard reflex data mutually. Developed system to smallest 1 pixel unit though measuring is possible 1 pixel as 37㎛ ×37㎛ (0.1369×10-4㎟) the accuracy to 1.5×10-4㎜ minutely measuring is possible performance verification and trust ability through an experiment prove.

각종 간질환에서 HBsAg , AntiHBs 그리고 AntiHBc 에 관한 연구

지무영 ( Moo Young Chi ),김영민 ( Young Min Kim ),강성기 ( Sung Ki Kang ),박종건 ( Chong Keun Park ),이영갑 ( Young Gap Lee ),이성혜 ( Sung Hye Lee ) 대한내과학회 1983 대한내과학회지 Vol.26 No.6

엘리트 유도선수들의 L-carnitine 섭취가 무산소성파워 및 젖산 농도에 미치는 영향

천윤석 ( Yoon Seouk Chun ),이근일 ( Keun Eil Lee ),조현철 ( Hyun Chul Cho ),강성기 ( Seoung Ki Kang ),김종규 ( Jong Kyu Kim ),김성연 ( Sung Yeon Kim ) 대한무도학회 2009 대한무도학회지 Vol.11 No.1

본 연구는 엘리트 유도선수들의 L-carnitine 투여가 운동 수행능력의 향상에 미치는 영향을 알아보고자 무산소성 운동능력과 젖산 농도를 규명하여, 안전한 운동 능력 향상 보조물(Ergogenic acid)검증을 통한 운동과 이상적인 신체조성에 필요한 실험적 자료를 제공하는데 연구의 목적이 있다. 대상자들은 Y대학 남자 엘리트 유도선수들로 구성 하였다. 또한 본 연구가 장기간 수행됨에 따라 연구의 목적과 방법에 대해 자세한 설명과 자발적으로 참여하고자 하는 사람 21명을 선정하여 7명씩 세 집단으로 구분 하였다. 카르니틴 2g 섭취와 운동 병행군(CE), 운동과 위약섭취군(EP), 운동과 통제군(EC)으로 구분하였다. 자료처리는 SPSS/PC 15.0을 사용하여 측정항목과 평균(M)과 표준편차(SD)를 산출하였고, 각 측정 항목의 집단과 처치기간에 따른 무산소능력과 혈중 피로물질의 차이를 검증하기 위하여 two-way(3RG×4RM) ANOVA를 실시하였다. 집단의 사후검증은 LSD를 사용하였으며, 처치기간, 채혈시점에 따른 차이검증은 contrast를 이용하였다. 이와 같은 과정을 거쳐서 본 연구에서 도출된 결론은 다음과 같다. 첫째, 무산소성 능력에서 피크파워와 평균파워는 처치기간에 따라 유의하게 높아지는 결과가 나타났다. 둘째, 피로물질의 젖산생성비율은 처치기간에 상호작용효과도 나타나지 않았고, 처치기간에 따른 주효과도 통계적으로 유의한 차이가 나타나지 않았다. 하지만, 젖산회복비율에서 카르니틴섭취군은 소폭 상승하는 경향을 확인 할 수 있었고, 처치기간에 따라 통계적으로 유의하게 높아지는 것으로 나타났다. The purpose of this study was to effect a L-carnitine Administration on Anaerobic Capacity in Elite Judo Athletes and to provide a experimental date needed ideal bodycomposition through verification of safety ergogenic acid, anaerobic capacity and blood lactate concentration. Subjects were Judo athletes with more than 6 years Judo career, no recent medical diagnosis, and no experience to intake a certain drug or a herb remedy at least within 6 months before this study among male elite Judo athletes in Y university. It was a long-term study, therefore, it described the objective and methods of this study in detail, selected 21 volunteers and classified them into 3 groups with 7 people each; 2g of carnitine and exercise (CE), exercise and placebo (EP) and only exercise (EC). Using SPSS/PC 15.0 program, it calculated measurement items, mean and standard deviation. It conducted tow-way(3RGx4RM)ANOVA to groups and treatment periods in each measurement item, anaerobic capability and difference between lactic acid. It used post-hoc test for groups and used contrast test to verify the difference of treatment period and blood sampling time. With those, it deducted following conclusions. First, in anaerobic ability, it showed significant increase of peak power and mean power by treatment period. Second, in the ratio of lactic acid production of fatigue substance, there was no interaction effect during treatment and no statistically significantly difference in the major effect by treatment period. However, in the ratio of lactic acid recovery, it was a little bit increased in the carnitine-intake group and it was statistically significantly increased by treatment period.

유도 선수들의 운동 영양 보조물 섭취형태와 도핑 의식

천윤석 ( Yoon Seouk Chun ),이근일 ( Keun Eil Lee ),정성숙 ( Sung Suk Jung ),이강우 ( Kang Woo Lee ),강성기 ( Seoung Ki Kang ),김종규 ( Jong Kyu Kim ) 한국운동영양학회 2005 Physical Activity and Nutrition (Phys Act Nutr) Vol.9 No.3

알콜에 기인된 간손상 2례

손영애(Young Ae Sohn),최인섭(Un Sub Choi),최규태(Kyoo Tai Choi),강성기(Sung Ki Kang),박현태(Hyun Tai Park),김영민(Young Min Kim) 대한소화기학회 1982 대한소화기학회지 Vol.14 No.1

Two cases of alcohol induced hepatic injury in a 43-year old male & a 46-year old male were presented. They were admitted to our med. Dept. because of jaundice, fatigue, malaise & anorexia. In addition to clinical manifestations of alcoholic liver disease, the finding of liver needle biopsy are compatible with those of transformed from alcoholic hepatitis to alcoholic cirrhosis & alcoholic cirrhosis including mallory body. We discussed this cases with review of literature.

테마정원의 연출기법과 시공사례 - 2002년 안면도 국제 꽃박람회 실내전시관을 중심으로 -

최경옥(Kyoung Ok Choi),김명희(Myung Hee Kim),강성기(Sung Ki Kang) 한국실내조경협회 2003 室內造景 = Journal of the Korean institute of interior Vol.5 No.1

This study is to treat the decorative method of theme garden in a case of " KOREA FLORITOPIA 2002". The process and results of the study are as follows:<br/> 1. The decorative method of theme garden was various. Of course, for the first time, decorative effect must be highlighted especially during display period.<br/> 2. In a case 'Mugunghwa exhibition' has decorative effect rather than ecological and environmental of plants.<br/> 3. we could classified by the 5 decorative type from a case of theme garden. Factors that compose the decorative characters of theme garden were classified by the local event factor, the principal products of province factor, the configuration of the ground factor, the important cultural property factor, the landmark factor.