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계단 오르기 동작시 계단 높이에 따른 하지 관절 모멘트의 변화 분석
은선덕 한국운동역학회 2003 한국운동역학회지 Vol.13 No.1
Eun, S-D. The effect of the stair heights on lower extremity joint moment in stair-ascent activity. Korean Journal of Sport Biomechanics, Vol. 13, No. 1, pp. 121-138. The purpose of this study was to investigate the effect of the stair heights on lower extremity joint moment in stair-ascent activity. Data were collected by 3-D cinematography, force platform. six normal males were participated in this experiment. All subjects performed a stair-ascent in four different heights of stairs (10, 14, 18, 22cm) having a 5 step staircase. The moment of lower extremity joint was analyzed during stance phase. The results were as follows: First, the second increase of plantar flexion moment of ankle joint in the 'forward continuance' phase was not occurred for stair A and B. But it occurred for stair C and D. And the maximum plantar flexion moment increased as the stair height become higher. Second, it was shown that the maximum inversion moment of the ankle joint was the smallest at stair B and it increased significantly at stair C. Third, maximum extension moment appeared in the 'pull-up' phase. And it increased as the stair height become higher. Fourth, it was shown that the maximum abduction moment of the knee joint was the smallest at stair C and it increased significantly at stair C. Fifth, maximum extension moment of hip joint increased significantly at stair C. Sixth, remarkable value of adduction moment occurred at hip joints and maximum adduction moment increased at stair D.
國民學校 體育科 敎育課程의 分析硏究 : 合理的인 敎育課程의 改正을 爲하여
金德善 대구교육대학교 1967 論文集 Vol.3 No.-
Since the announcement of new curriculum on February 15, 1963, the revised curriculum has been in practical operation at the elementary school. Through observation and researches based on my own experiences in teaching physical education in classroom, I have found that the current physical education curriculum for the elementary school has many unsatisfactory defects in terms of meeting the needs of contemporary society and realizing educational objectives of the physical education program. From the view points of objectivity and inter-coordination of its subject matters, there is substantial inconsistency in the arrangement and selection of teaching materials compatible with pupil's physical and mental growth. Taking these deficiencies into full consideration, I have attempted in this paper a detailed systematic and comparative analysis based on the physical education curriculum prepared by the Ministry·of education. After a comprehensive investigation of the subject, I have presented a tentative proposal for physical education curriculum in the elementary school with an emphasis on the necessity of revising the current curriculum, hoping that it will be seriously examined and evaluated by specialists in the field.
김덕진,박태선,정종재 전남사학회 2002 역사학연구 Vol.19 No.-
A chronological table of Korean history is a study material which is arranged for us to understand the course of a historical development and a table that historical events are arranged and systematized in a chronological order as time passes, As a middle school Korean historical textbook has 10 chronological tables and a highschool Korean historical textbook has 6 chronological tables, they are very useful to take a general view of the unit. But the years which can represent the unit are left out or the facts which are not referred to in the main text are wrote down. On the other hand, the facts which are written down in a chronological table are not seen in the main text or in the general chronological table. In addition, a middle school historical textbook has two main chronological tables while a highschool historical textbook has nothing. Therefore we should write down the historical facts as 3 aspects of the followings. First, There can be a periodical history divided into a short period, a middle period, and a long period. Second, There can be a classified history divided into a political, an economical, a social, and a cultural affairs. A third, There can be a thematic history divided into a military, a foreign, a traffic, a communicative, an industrial, an educational, an academic, and a religious affairs. Otherwise, we had better make a chronological table which is divided the historical facts occurred in an special period into some kinds of categories or into a region, a race, and a nation.
金德善 대구교육대학교 1966 論文集 Vol.2 No.-
There comes in the orthopedic exercises for the person who is likely to be neglected as physically abnormal and weak to have a harmonized and well-balanced physique. The exercises of this sort are refered to those which are so constituted that they can correct the deformed and make the weakened restore his faculty for games and activities. As the writer believed it to be necessary to consider the compansatory orthopedic exercises which would be effective as suitable and rational measure, against the physical abnormality, he made a study with following steps: 1) to check tke objects of study and the points which need the orthopedic treatment, 2) to identify the nature of orthopedic exercises and apply the principle. 3) to find the practical and effective methods of orthopedic exercises which could be applicable to the whole area of exercises.
트레드밀의 속도 변화에 따른 노년기 성인의 보행패턴 연구
은선덕 서울대학교 체육연구소 2001 서울大學校 體育硏究所論集 Vol.22 No.1
The purpose of this study was to investigate the effect of speed conditions on the gait pattern in old age. Data were collected using video camera and video analyzing system. Six males in their sixty to seventies were tested during slow(3.5km/h), moderate(4.0km/h), fast(4.5km/h) speed on treadmill wish 10% grade. They were videotaped using a high speed video camera with the frame rate being 60Hz, Variables computated using the method of two-dimensional video analysis. One-way ANOVA was used to evaluating the statistical significance. The results obtained from this study were as follows: The stance phase was increased and swing phase was decreased as the speed uras increased in all subjects. But there was no significant difference statistically. All subjects did not show a significant difference in speed conditions at major events jn mean ankle angle. However, max. ankle angle and ROM(range of motion) during stance phase was augmented as the speed was increased(P<.05). All subjects did not show a significant difference in speed conditions at major event in mean knee angle. However min. ankle angle during stance phase and ROM during swing phase was augmented as the speed was increased(P<.05).
100m 달리기시 최고 속도 구간과 감속 구간의 동작 비교 연구
은선덕,정철수,배성제 한국운동역학회 1996 한국운동역학회지 Vol.6 No.1
본 연구의 목적은 100m 달리기에서 최고 속도 구간과 감속 구간에서의 동작을 비교하여 감속의 원인을 규명하는 데 있다. 두 구간에 대한 주요 운동학적 변인인 신체 중심의 속도와 변위, 보속과 보폭, 상체의 전경각, 관절각, 각속도를 분석하여 다음과 같은 결론은 얻었다. 감속 구간에서의 지면 접촉 기간 동안과 체공 기간 동안의 신체 중심의 수평 속도는 최고 속도 구간에 비해 느린 것으로 나타났다. 보속은 최고 속도 구간에 비해 느린 것으로 나타났고, 지지 시간은 긴 것으로 나타났으며, 체공 시간은 차이가 나타나지 않았다. 보폭은 최고 속도 구간에 비해 짧은 것으로 나타났고, 착지시 신체 중심과 발끝의 수평 거리는 최고 속도 구간에 비해 긴 것으로 나타났다. 또한 상체의 전경각은 착지시에만 차이가 있었으며 최고 속도 구간에 비해 작고, 무릎 관절각은 착지시와 이지시에 있어서 최고 속도 구간에 비해 작았다. 그리고 고관절각은 반대발의 이지시와 착지시, 그리고 최소값에 있어서 최고 속도 구간에 비해 크고, 운동 범위에 있어서는 작은 것으로 나타났다. 또한 무릎 관절 각속도는 최고 속도 구간과의 비교에서 차이가 나타나지 않았다. The study was conducted to make a comparative analysis of running motion and to examine the difference in the deceleration phase(80∼90m) and the Max-speed phase(30∼40m) during the 100-meter Sprint. In this study, data was analyzed with variables including velocity and displacement of center of gravity, stride frequency, stride length, foward angle of upper body, joint angle, angular velocity in the deceleration phase and the max-speed phase. The conclusions of the study were as follows ; 1. Horizontal velocity of the center of gravity in the deceleration phase was found to be slower than that in the max-speed phase in the supporting period and non-supporting period. 2. Stride frequency in the deceleration phase was found to be slower than that in the max-speed phase, and supporting time n the deceleration phase was longer than that in the max-speed phase, also there was no difference between each phase in nonsupporting time. 3. Stride length in the deceleration phase was to be found shorter than that in the max-speed phase. 4. Horizontal distance between the center of gravity and toe in the deceleration phase was to be found longer than that in the max-speed phase. 5. Forward angle of upper body at the moment of touch down in the deceleration phase was found to be smaller than that in the max-speed phase. 6. Knee angle at the moment of touch down and take off in the deceleration phase were found to be smaller than in the max-speed phase. 7. Hip angle at the moment of touch down and take off of the other foot, and minimum hip angle in the deceleration phase were found to be larger than that in the max-speed phase, and range of, motion in the deceleration phase was smaller than that in the max-speed phase. 8. Knee angular velocity at the moment of touch down of the other foot toward flection in the deceleration phase was found to be larger than that in the max-speed phase.
투구 속도 증가에 따른 타자의 발 움직임과 지면 반력의 변화
이영석,은선덕 한국운동역학회 2004 한국운동역학회지 Vol.14 No.3
Y. S. LEE, S. D. EUN. The Movement of Foot and the Shift of Ground Reaction Force in Batters according to the Ball Speed Increase. Korean Journal of Sport Biomechanics, Vol. 14, No3, pp. 191-202, 2004. The batting performance in baseball is a repetitive movement. In order to make the stabilization of posture and the efficient shift of body weight, both the range of stance and stride are important. The previous studies explained that the consistent stride which included the amount of time, stance, and direction were needed. However, the batting performance is frequently changed according to the several speed of ball. Therefore, this study was to analyze the reaction time, the range of stance, the change of stride, and the change of GRF during the batting movement in three kinds of ball speed (120km/h, 130km/h, & 140km/h). Seven elite players are participated in this study. 1. The reaction time of the stride phase was short whereas the time of the swing phase was long according to the increasing ball speed. 2. The range of the stance was wide and the mediolateral direction of the stride was decreased according to the increasing ball speed. 3. In the three kinds of ball speed, the change of body weight was transferred to the center, the rear foot, and the front foot directions. The ball speed of 130km/h showed the high frequency of the suitable batting. At this ball speed, the movement of the body weight was shifted smoothly and the value of the Ground Reaction Force was large enough.
전기 치수 검사 시 역치 자극 이후 과용(過用) 자극 시간의 측정
남기창,안선희,김수찬,김덕원,이승종 大韓齒科保存學會 2004 Restorative Dentistry & Endodontics Vol.29 No.3
Use of electric pulp testing elicits painful response in vital teeth. In this study, we examined the excessive time from pain feeling to stimulation disconnection in clinical situation. D626D (Parkell Inc., USA.) scan type electric pulp tester was used in total of 23 young healthy individuals. Each of the right central incisors and first premolars were used as testing teeth. Stimulation disconnection was achieved by EMG in anterior belly of digastric muscle, finger span, and voice and the excessive stimulation time over the sensory threshold was recorded. As a result, we found that the short responses before the stimulation disconnection appeared following order: EMG, finger span, and voice. The EMG disconnection is suggested to be used to reduce the excessive stimulus time in electric pulp testing.
200m 달리기시 곡선 구간과 직선 구간 동작의 운동학적 변인 비교 분석
김용운,정철수,은선덕,이영석 한국운동역학회 2000 한국운동역학회지 Vol.10 No.1
본 연구는 단거리 달리기(200 m)의 곡선 구간과 직선 구간의 동작을 비교 · 분석하여, 운동학적 변인의 차이를 규명하고, 곡선 구간의 동작 메카니즘에 대한 기초적인 정보를 제공하기 위해, 서울체육고등학교의 100 m 및 200 m 달리기 선수 5명을 대상으로 하여, 3차원 영상 분석법을 통하여 동작을 분석하였다. 본 연구에서 도출된 결론은 다음과 같다. 1. 신체중심의 높이는 직선 구간이 곡선 구간보다 높았으며, 신체중심 변위의 변화는 곡선 구간에서 더 컸다. 2. 신체중심의 수평속도는 곡선 구간이 직선 구간보다 컸으며, 곡선 구간에서 내측 스트라이드 국면이 외측 스트라이드 국면보다 컸다. 3. 신체중심의 수평 측면속도는 평균값에서 곡선 구간과 직선 구간이 차이가 없었으나, 속도의 절대값에서는 곡선 구간이 직선 구간보다 컸다. 4. 곡선 구간 내, 외측 스트라이드 국면의 이지, 착지시 접선속도는 차이가 없었다. 5. 스트라이드 길이는 곡선 구간의 외측 스트라이드가 가장 길었으며, 직선 구간, 곡선 구간의 내측 스트라이드 순서로 길었다. 6. 스트라이드 빈도는 곡선 구간과 직선 구간에서 차이가 없었다. 7. 상체 전경각의 평균값은 곡선 구간과 직선 구간에서 차이가 없었으나, 범위는 곡선 구간이 직선 구간보다 컸다. 8. 상체 측경각은 평균값에서 곡선 구간이 직선 구간보다 컸으나, 범위는 차이가 없었다. 9. 상완의 운동범위는 곡선 구간과 직선 구간에서 차이가 없었다. 10. 무릎거양각은 곡선 구간이 직선 구간보다 운동범위가 컸다. 이상의 결과, 단거리 달리기의 곡선 구간에서 직선 구간과는 차별화된 수행 형태를 보였으며, 내, 외측 스트라이드 간에도 상이한 수행 형태를 보였다. This study was conducted to make a comparative analysis of running motion and to examine the differences of kinematice in curved and straight track portion during the 200m sprinting. In this study, five skilled male sprinters of high school served as subjects. The running motions were analyzed using the method of three-dimensional cinematography The conclusions of this study were as follows. 1. Height of the center of gravity in straight portion was higher than that in curved portion, but displacement of the center of gravity in curved portion was higher than that in straight portion. 2. Horizontal velocity of the center of gravity in curved portion was faster than that in straight portion, and in curved portion that of left stride phase was faster than that in fight stride phase. 3. There was no difference in mean value of lateral component of horizontal velocity between both portions, but absolute value of that in curved portion was faster than that in straight portion. 4. There was no difference in tangential velocity at the instant of touchdown and takeoff of both strides on curved portion. 5. Stride length in right stride of curved portion was the longest, and next to that, that of straight portion was, and left stride of curved portion was the shortest. 6. There was no difference in stride frequence between curved and straight portion. 7. There was no difference in mean value of forward lean angle between both portions, but active range of that in curved portion was larger than that in straight portion. 8. Mean value of inward lean angle in curved portion was larger than that in straight portion, but no difference in active range of that between both portions. As the conclusion of this study, it was clear that there were significantly different running patterns between curved and straight portion, and between left and right stride of curved portion.