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金奎秀,姜鳳漢 龍仁大學校 1993 용인대학교 논문집 Vol.9 No.-
Golf down swing was interpreted through three dimensional image analysis, it means that most down swings are in concord with the two dimensional interpretation up to 95%. But in the angular movement there is big difference between the skilled and unskilled before impact and direction of club head. This was not discovered in two dimensional analysis. Club head shows the difference of 15rad/sec(50%) between the skilled and unskilled to the direction of central axis before impact. It influences the movement of club head. To interpret down swing three segment model is used. By doing so the relationship among upper trunk, arm and hand joint movement which could not be interpreted in the two dimensional segment was investigated. The skilled showed bigger value of velocity, angular velocity, torque, kinetic energy and angular momentum comparing with the unskilled. The earlier value of the angular velocity shows that the unskilled have bigger value than the skilled. The increase is faster to the side of the skilled. The size of the angular velocity generated in each segment is bigger to the skilled than the unskilled. But the angular velocity to the wrist is bigger for the unskilled. Accordingly the golf swing is chiefly generated by the wrist. The kinetic energy of arm greatly functions at the earlier stage for the skilled. In the middle of the movement the energy decerases. The energy is transmitted to the club but the unskilled increase kinetic energy using arm energy. The training of the unskilled through golf down swing must be practiced laying emphases upon the retaining of movement, the enforcement of wrist movenent, the revolving to the central axis of club at the moment of impact and trunk, arm and wrist must be on the short moment of the fastest velocity of acceleration.
三次元 映像分析을 利用한 골프 스윙의 動作改善에 관한 硏究
金鍾達,姜鳳漢 龍仁大學校 1992 용인대학교 논문집 Vol.8 No.-
The objective of this dissertation is to investigate three dimensional segment movement in golf swing, Human body is modeled as a three open link system.After two cameras caught the swing motion of 10 skilled and 10 unskilled golfers, three dimensional space co -ordinates are procured from plane co -ordinates by using MDLT method.There dimensional space co -ordinates are calculated using mechanical data.The data is used to analyze the down swing of golf in terms of kinematic and mechanical point of view to conclude as following. Golf down swing was interpreted through three dimensional imageanalysis, it means that most down swings are in concord with the two dimensional interpretation up to 95%, But in the angular movement there is big difference between the stilled and unskilled before impact and direction of club head.This was not discovered in two dimensional analysis.Club head shows difference of 15rad/sec(50%) between the skilled and unskilled to the direction of central axis before impact.It influences the movement of club head.To interpret down swing three segment model is used.By doing so the relationship among upper trunk, arm and hand Joint movement which could not be interpreted in the two dimensional segment was investigated.The skilled showed bigger value of velocity.angular velocity comparing with the unskilled.The earlier value of the angular velocity shows that the unskilled have bigger value than the skilled.The increase is faster to the side of the skilled.The size of angular velocity generated in each segment is bigger to the skilled than the unskilled.But the angular velocity to the wrist is bigger for the unskilled.Accordingly the golf swing is chiefly generated by the wrist. The training of the unskilled through golf down swing must be practiced laying emphases upon the retaining of movement, the enforcement of wrist movement, the revolving to the central axis of club at the moment of impact and trunk, arm and wrist must be on the short moment of the fastest velocity of acceleration.
분산 운영체제에서 글로벌 스케줄러를 위한 Meta-Level Controller 설계
배인한,김창수,강봉한 대구효성가톨릭대학교 응용과학연구소 1991 응용과학연구논문집 Vol.1 No.-
To enchance the performance of load balancing algorithms, We design the Meta-Level Controller which considers the communication delemma by was of choose he load balancing on the states of nodes, communication network and task characteristics. This thesis is designed the load balancing model in order to reduce the communication cast and to gain high-speed response time based on the computation=oriented method and the communication-oriented method. We change the Baysian load balancing method in order to reduce the communication cost with the global state information to upgrade the performance of systems by reduce the numer of state information to upgrade the performance of systems by reduce the numer of state information innovation period according to the state of nodes. This system selects the load balancing algorithms either Bidding or Baysian method by preserving the change of the state of nodes and communication cost.