조깅시 발의 착지유형에 따른 지면반력의 변화

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

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.

무용 / 무용 Turn - out 수직점프의 하지내 분절협응과 수직지면반력 유형

윤남식(N.S.Yun),이경옥(K.O.Yi),송인아(SongI.A.) 한국체육학회 1999 한국체육학회지 Vol.38 No.4

본 연구의 목적은 무용 Turn-out수직점프시 미적으로 조화로우면서 높은 도약과 충격이 적으면서 균형 잡힌 착지를 무용 역학(dance biomechanics)적으로 분석하여 그 특성을 밝히고, 이상적인 Turn-out 수직점프 동작을 서술하는데 있다.본 연구의 피험자는 미적으로 아름다운 점프를 수행할 수 있는 무용경력 10-15년의 발레전공자 8명으로 특성별로 비교하였다. 하지관절의 속도 그래프로 운동량의 전이유형과 분절의 협응을 비교하여 살펴보았고, 수직 지면반력 유형을 통하여 이상적인 점핑모델을 설명하였다.도약과 착지시 하지분절의 속도 그래프를 통하여 도약시 하지 관절간 지연이 작기는 하나 순차적(고관절, 무릎관절, 발목관절, 중족골관절, 발앞꿈치)으로 최대수직속도에 이르는 것이 우아하고 미적인 Turn-out수직점프의 유형임을 밝혀내었다. 왜냐하면 무용 Turn-out 수직점프는 정확성 보다 도약시 속도가 높이를 결정하는 중요한 요인으로 작용하기 때문이다(Luttgens & Wells, 1982, Hudson, 1986). 또한 착지시에는 관절의 속도를 순차적으로 최소수직속도에 이르게 함으로써 충격력을 최소화하면서 균형 있고, 우아하게 착지하는 것을 가능하게 한다. 그러므로 미적인 Turn-out수직점프의 수행을 위하여 하지분절을 순차적으로 움직이는 훈련(releve, plie, demi-pont)이 필요함을 알 수 있다.이상적인 Turn-out 수직점프의 수직 지면반력 유형은 도약기와 착지기가 비대칭이며, 도약시 능동적 정점이 착지시 능동적 정점보다 큰 것이다. 우아하고 높이 점프하기 위해서 무릎을 구부릴 때는 천천히 행하지만 무릎을 펼 때는 굴곡시보다 빠르게 히는 것이다. 이렇게 하기 위해 팔을 위로 올리거나 (en haut)이나 옆에서 위로 올리며 나는 동작(vole)을 이용하는 것이 도움이 될 것이다.충격을 적게 하면서 우아하게 착지하기 위해서는 수동적 정점의 크기가 작을수록 좋으며, 수동적 정점의 수가 2-3개로 분산되게 하는 것이다. 발앞꿈치, 종족골, 발뒤꿈치로 이어지는 중족골 착지는 인체가 충격을 흡수하며 충격을 최소화할 수 있게 도와줄 수 있다. 중족골로 지탱하며 천천히 착지할 수 있도록 하퇴근과 아킬레스건의 훈련이 필요하고, 이러한 발의 순차적인 움직임훈련을 하기 위하여 바(barre)에서의 훈련(battement tendu, degage, frappe)을 강화해야 한다. 또한 착지시 천천히 무릎을 구부려 착지시간을 길게 하는 것이 우아하고, 안정적이며, 충격이 적은 착지가 될 것이다. The purpose of this research is to illuminate the dance-biomechanical characteristics of balanced landing of dance turn-out vertical jump with great jump height and small impact which is aesthetically harmonic and to describe such motion. The subject of the current research are 8 ballet dancers selected from a group of professional dancers with 10 - 15 years of experience. Throughout the research, kinematic variables are extracted using 2-dimensional image analysis method and kinetic variables are measured using force platform.At take-off, the coordination of lower extremity segments shows sequential pattern and only the maximum vertical speed shows short delays.The ideal vertical ground repulse model at turn-out vertical jump is such that the active peak at landing is smaller than that at take-off and the lasting time of active peak at landing is larger or equal to that at take-off. This landing technique is an ideal landing model which minimizes the impact force and gives balanced landing.In order to perform an ideal turn-out vertical jump, coordination of lower extremity joints must be done harmonically and the motion of adjacent segments should be sequential. Thus one must train to move segments sequentially with releve, plie, demi-pointe.

기업별 핵심기술 탐색을 위한 특허의 동시분류 네트워크 분석

윤남식(Namshik Yun),지일용(Ilyong Ji) 한국산학기술학회 2019 한국산학기술학회논문지 Vol.20 No.4

글로벌 폴더블 디스플레이 시장은 최근 업체들 간 치열한 경쟁이 벌어지고 있어, 정확한 기술 동향 분석을 통한 전략적 기술기획이 요구되고 있다. 기술기획을 위한 분석 방법으로서의 특허분석은 그 개방성, 정형성, 기술에 대한 상세정보 등의 데이터 특성으로 인해 현장에서 자주 활용되고 있다. 그런데 이 가운데 정성분석은 특허의 내용을 건별로 파악하여야 하는 관계로 시간과 비용의 문제가 발생하며, 전통적인 정량분석은 주로 특허의 수에 의존함으로써 특허의 내용 및 기업별 핵심기술을 파악하는 데 한계가 존재한다. 따라서 본 연구에서는 특허의 동시분류 네크워크 분석 방법을 활용하여 기업별 핵심기술을 분석해 보고자 하였다. 분석 결과, 폴더블 디스플레이 관련 특허 출원은 2014년부터 급격히 성장하여 출원 기업의 92%가 한국의 2개 패널 제조사(SDC 및 LGD)와 2개 세트 제조사(SEC 및 LGE)의 출원으로 확인되었다. 동시분류 네트워크를 분석해 본 결과, 패널 제조사인 SDC와 LGD는 핵심기술 분야가 서로 유사한 반면, 세트 제조사인 SEC와 LGE는 눈에 띄는 차별성이 존재함을 확인하였다. 이러한 결과는 본 분야 기업의 기술전략에 대한 시사점을 제공한다. 또한 특허 동시분류 네트워크를 통해서만 확인이 가능한 것으로, 이 분석이 기업 기술전략에 유용하게 활용될 수 있음을 확인하였다. As there is severe competition in the global foldable display market, strategic technology planning is required. Patent analysis as a tool for technology planning has frequently been used due to data characteristics such as openness, formality, and detailed information. However, traditional patent analysis has various limitations such as quantitative approaches are limited in evaluating contents of patents and identifying core technologies of firms as they rely on number of patents, and qualitative approaches have time and cost problems as researchers have to investigate each patent on a case-by-case basis. In this research, we analyze core technologies of firms in the foldable display sector analyzing patent co-classification Network. Results show that the number of patent applications has rapidly increased since 2014, and 92% of these patents are held by two panel manufacturers, SDC and LGD, and two device manufacturers, SEC and LGE. Network analysis shows that the two panel manufacturers" core technologies are similar and two device manufacturers are notably different. This research provides implications to the sector. Moreover, this study provides unique results drawn from co-classification network analysis, and therefore, our research suggests patent co-classification analysis as an effective tool for technology planning.

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.

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

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.

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.

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.