조깅시 발의 착지유형에 따른 지면반력의 변화

윤남식(Nam Sik Yun),김지연(Jee Youn Kim) 한국여성체육학회 1993 한국여성체육학회지 Vol.7 No.-

경사도에 따른 보행의 운동학적 비교

윤남식(Yun Nam Sik),이경옥(Lee Kyoung Ok),김지연(Kim Jee Youn) 한국여성체육학회 1999 한국여성체육학회지 Vol.13 No.1

The purpose of this study were analysed to kinematic of gait motion on various inclined walkways and suggested that data using inverse dynamic method predicted to load at muscles and joint structure. Three dimensional kinematic gait analysis using VICON 370 system. Experiments were performed for 12 adult females on various inclined walkways with the same normal speed of 1.25m/sec. 4 different inclinations of walkway were selected: As follow are the result of analysis: 1. The pelvic tilt angle and the angular velocity shown similar pattern on -5% down-hill walking with level walking, on 5% up-hill with 10% up-hill. There are definite differences on up-hill and down-hill at the foot strike and the opposite toe off (P $lt; .05). 2. Hip angle shown differences each inclination at the foot strike, the opposite toe off and the toe off((P $lt; .001). but there are no differences in maximum extension angle. The angle velocity shown differences at the foot strike, the opposite toe off(P $lt;. 05). 3. Knee angle shown differences each inclination, at the foot strike, the opposite toe off and the toe off. The case of the angle velocity shown differences each inclination in minimum extension angle(P $lt; .001). 4. The case of the ankle angle, there was differences on foot strike(P $lt; .05). on opposite toe off(P $lt; .001) about inclination. The angular velocity was different at the foot strike with at the OTO. As there analysis and conclusion show. Walking, the aerobic exercises for health maintenance and improvement which needs the time of at least 30 minutes, so it gives load continuously and repeatedly on muscles and ligaments. Especially at the up and down hill walking, we suspect the angle and angular velocity change fast each joint. so during the up and down-hill walking. the old and the weak or the novice should walk slowly or do it in the limit of no body-stress.

에어로빅 댄스시 부하에 영향을 미치는 내외적인 변인에 관한 연구

윤남식(Nam Sik Yun),이경옥(Kyung Ock Yi) 한국사회체육학회 1995 한국사회체육학회지 Vol.3 No.-

The Purpose of this study is to identify the causes of injury in aerobic dancing and to provide for the preventive measures against the injury. The study consists of three parts: survey of aerobic dance, Video analyses of aerobic dance movement, and body impacts analyses via force plate form. The survey focuses on five factors of injuries that, are commonly related to body load. Those are intrinsic factor, extrinsic factor, injury factor, exercise experience facror, and exercise factor. First, the intrinsic factor s composed of anthropometric variables such as height, weight, body mass index, sex, and age. Second, the extrinsic factor includes usage of protective gears, shoe quality, shoe sole thickness, and floor type. Third, the injury factor consists of the injury experience, injured part of human body, medical treatment of the injured, and history of disease. Fourth, the exercise experience factor includes frequence of exercise, exercise time length. Fifth, the exercise factor includes landing motion, exercise pace, and reaction force. The sample of survey is confined to the adult persons residing in Seoul. The places where the survey form was distributed include local community sports center, private commercial fitness facilities, and private noncommercial fitness facilities. The aerobic classes in these facilities were shot with video cameras and using the film. We analyzed a few important body movements such as landing style, movement type, movement speed, and movement frequency. The film was also used to test the reaction force of various exercise movements. The dependent variable of the test are (I)the vertical reaction force in landing, (2)the number of peaks, and (3) the rate of loading. on the other hand, the independent variables are (1)shoe type, (2)floor type, (3)feet position in landing, and (4)motion speed. In conclusion and suggestions, many people continuously practise aerobic exercise over a long period. To make it desirable as a life-time sports, we need to minimize the physical impacts that aerobic movement exerts on our body. It implies that we would be safer by wearing protective gears and by keeping our bodies warm. In order to prevent injuries, leaders should not compel an intense exercise and also ought to recommend a rest to individuals who show signs of discomfort during exercise. Most of private commercial fitmess facilities do not consider that different age groups need distinct aerobic programs. A uniformly imposed program is most likely to overwork our bodies. Therefore, aerobic classes need to be divided according to both age and the degree of physical fitness of students. To minimize the injuries due to the lack of body flexibility, it is recommended that students carry out some stretching exercise befor and after the main exercise. It was a surprising finding that not only the lower limb but also the upper limb like. arms and shoulders is subject to exercise injuries. Now that this study has focused on the lower limb injuries, further studies on the upper limb would be quite useful. The shock of aerobic movement on human body largely depends on the frequency and magnitude of within-50ms passive impact. Therefor, in conducting high impact movement, we need to minimize this type of passive impact. On the other hand, low impact movement may also cause a injury if it is continued over a long time length.In this regard, we may test the impact of extrinsic. factor(e.g., floor quality, shoes type)on human body engaged in low impact movement like walking by extending the exercise time length until the walker gets fatigued. When performing running, jumping, and fast walking, we need to wear jogging shoes or aerobic shoes that are effective in shock-absorbing.In additin, wooden floor appears to be the most desirable fo those exercise. Dancing shoes or indoor shoes that are used by 27.2%of the surveyed is of the least shock-absorbing quality. Therefore, an injury-preventive education seemsto b

지역사회 생활체육 현황조사 및 발전방향에 관한 연구

윤남식(Nam Sik Yun),김종선(Chong Sun Kim),김숙자(Yang Ja Hong),홍양자(Sook Ja Kim),김경숙(Kyung Sook Kim),이경옥(Kyung Ok Lee),함정혜(Chung Hae Hahm),전선혜(Sun Hea Cheun) 한국사회체육학회 1994 한국사회체육학회지 Vol.2 No.-

The purpose of this research was bring to be communities on field research to activate and being progress to "sport for all program." For the research 6 major cities-Seoul, Inchon, Deagu, Pusan, and Kyangju-and 19 minor cities have been selected. The survey questionnaire developed by the investigtors was mailed to the administrative persons of the City Hall and Local Hall before one week aheard the actural survey. The contents of this research has been divided into three major fields; 1. administration and planning, 2. menagements 3. evaluation. The research show the actual conditions of the local communities` sports for all is still limited. The results of this research are as following; 1. For improvement and progress of for all, the organization should have human power by stationing of sport 2. Currently the total government spending alloctates for soprts for all is approximate 2% but it needs to be increase to be effective. 3. Adimistration of long range plan of various fields is necessary. 4. Rather than to build new facilities, the current facilities needs to be revamped to meet the necessary functions. 5. Presently the possessor of liscences are not fully accounted for, thus there needs a was to account for them I hus tobe useful for sports for all programs. 6. Program should be diverse and complete to give the participants various selections. 7. Club of sports for all sould be formed not limited only to adult memberships. 8. Advertisement and continued education is necessary to bring about the understanding of sports for all. 9. Evaluation is necessary to assessment methodology and contents. Evalustion is to be able to be used as a feedback for future evaluation of sports.

QualNet에서의 BER 패턴 기반의 선박 애드혹 통신 시뮬레이션 기법 연구

윤남식 ( Nam-sik Yun ),박윤용 ( Yoon-young Park ),정강희 ( Kang-hee Jung ),장병태 ( Byung Tae Jang ),임동선 ( Dong Sun Lim ),김재명 ( Jae Myoung Kim ) 한국정보처리학회 2012 한국정보처리학회 학술대회논문집 Vol.19 No.1

선박 산업에서의 경쟁력 강화를 위해 IT 융합 기술 기반의 고부가가치 기술 및 서비스에 대한 요구가 증대되고 있다. IT 기반의 선박 탑재 장비의 증가로 인해 이러한 장비의 효율적인 관리 및 제어, 이에 기반을 둔 고급 서비스 개발을 위해서 필수적으로 해상에서의 광대역 무선 통신망 구축이 요구된다. 본 논문에서는 선박 간 무선 통신망 구축 및 시뮬레이션 구조에 대해 살펴보고, 해상 환경 시뮬레이션을 위한 시뮬레이션 모델을 제시한다. 또한 효율적인 해상 통신 환경 시뮬레이션을 위한 QualNet 시뮬레이터에서의 BER(Bit Error Rate) 패턴 기반의 시뮬레이션 구조를 제시한다.

메틸오렌지계 염료에 의한 나일론의 염색에 있어서 수결합의 영향

임용진,윤남식,송성한,Im, Yong-Jin,Yun, Nam-Sik,Song, Seong-Han 한국섬유공학회 1989 한국섬유공학회지 Vol.26 No.1

The contribution of hydrophobic interaction to the binding of nylons with methyl orange and its homologs was investigated from the thermodynamic analysis of the binding system. It was found that the free energy increased negatively with the hydrophobicity of dye and nylon against unfavorable enthalpy situation in the binding system, which means that the binding is entropy-driven. The contribution of hydrophobic interaction to the binding was much pronounced in the binding of nylon 612 with butyl orange where the free energy increases negatively in spite of endothermic enthalpy situation. These results show that hydrophobic interaction contributes significantly to the binding of nylon with acid dye, and that not only hydrophobicity of nylon but also that of dye affects the hydrophobic interaction.

메틸오렌지에 의한 나일론의 염색에 있어서 열역학적 특성 -소수결합의 영향-

임용진,윤남식,이창모,Im, Yong-Jin,Yun, Nam-Sik,Lee, Chang-Mo 한국섬유공학회 1987 한국섬유공학회지 Vol.24 No.4

The bindings of nylons with methyl orange were studied, and the first binding constants and thermodynamic parameters for the binding were obtained. It was found that, with increasing the methylene group of the nylons, the free energy for the binding increased negatively and the enthalpy and the entropy increased positively. The favorable free energy change for the binding appeared to be a result of favorable entropy change rather than enthalpy change. All these facts obtained can be interpreted by the hydrophobic interaction between the hydrocarbon moiety of the dye and the hydrocarbon parts of the nylons, and it is reasonable to conclude that not only the electrostatic attraction but also the hydrophobic interaction contributes to the binding of methyl orange, a typical acid dye, by nylons.

해상 애드혹 네트워크 기반 선박 통신 연구 현황

박윤용,윤남식,장병태,임동선,김재명,Park, Yun-Yong,Yun, Nam-Sik,Jang, Byeong-Tae,Im, Dong-Seon,Kim, Jae-Myeong 한국정보통신학회 2011 한국정보통신학회지 Vol.12 No.2

폴리에스테르 섬유의 캐리어 염색에 관한 연구(I)

임용진,윤남식,장진규,Im, Yong-Jin,Yun, Nam-Sik,Jang, Jin-Gyu 한국섬유공학회 1987 한국섬유공학회지 Vol.24 No.5

To investigate the effect of carrier on the dyeability of poly(ethylen terephthalate)(PET) fiber, equilibrium dye uptake and initial dyeing temperature were measured and discussed in connection with solubility parameter. It was shown that the equilibrium dye uptake for carrier-added dyeing increased with smaller component solubility parameter difference between PET and carrier, and lower initial dyeing temperature. For carriers with similar solubility parameter and molar volume, the one which has phenyl ring and carbonyl group in its molecular structure exhibited greater carrier activity. In this experiment, the most effective carrier for PET fiber was benzaldehyde and acetophenone, which can interact with PET fiber most effectively by overlap of p-orbitals.

Allylamine계 항균제의 합성 및 그 항균성에 관한 연구(Ⅰ)

심재윤(Jae Yun Shim),조예경(Ye Kyung Cho),조광호(Kwang Ho Cho),윤남식(Nam Sik Yoon) 한국염색가공학회 1998 韓國染色加工學會誌 Vol.10 No.6