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김동학,전민정 한국공업화학회 2000 응용화학 Vol.4 No.2
We investigated the forming process and the properties of a semi-rigid polyurethane foam which was applicable to the instrument panel of a car. For the purpose of studying the free foaming process, we made a visual mold not only to see the foaming process but also to measure the temperature of the foam with reaction time. The effects of process variables such as the ratio of reactants(polyol : isocyante), the mixing speed, and the wall temperature on the growth and density of the foam were analysed to form the useful processing guideline.
김동학 경원전문대학 2000 論文集 Vol.22 No.-
We have considered the theoretical fundements of the activation for social sports institution and the present conditions of the institutions of the sports for all in Korea. There has been increased the amount of the institutions of the sports for all as the sports for people since Olympic. The government develops it as the welfare for people. However the previous calculation for it estimates only 0.16% according to 1995 data. Then, we are trying to have the budget for the 2nd National physical Education Development which has increased up to 19.6%. Because of the insufficient finance of government, the actual investment on the development of the sports for all is not enough. We can acknowledge it that it is most necessary to activate the administrational organization, institution, the coaches and programs for it, through the analysis of the researched data. The investments on the institutions of the sports for all can be divided into the two parts : one is the public investment (by the Government, local administrations, and soon) the other the private one (by industries, some organizations, or a person). And it is necessary to study the plan for the activations and increasement of such by those. The followings are some proposals concerned with it. First is necessary for the government to invest actively in the laws of the sports for people, Hodolee plan, and so on. Secondly, it is necessary to make the system and the procedures simple so that many people can use them easily, and so that its administration and operation be effective. Thirdly, it is necessary to make a long-range plan on the government's finance as some advanced states (England, German) do. Fourthly, A special organization is necessary that can the whole wide administration of the sport for all.
김동학,박경호 경원전문대학 1996 論文集 Vol.18 No.1
The purpose of the study was to survey and analysis the competitive state anxiety of 67 Judoists and 41 wrestling to analysis and types of competitive state anxiety, and then to provide some basic data to develops a training program through which the Judoists and wrestling can effectively overcome the competitive state anxiety that is certainly accompanied with the competitive process with that they can maximize their competition while maintaining their mind in an optimum state in the competition. The differences of Judoists and wrestling for each element of anxiety, respectively, with regard to anxiety, the years of athletic experience, the level of competitive power, and a significant level, P<0.05, was adopted in the present study.
김동학,박준석 경원전문대학 1997 論文集 Vol.19 No.1
We can obtain a good method for understanding the essence and technique of Taekwondo through the comparative research on the common and different properties between Taekwondo and Taekkyun. I suggest some insufficiencies should be refilled and that Taekwondo and Taekkyun should be developed as Korean traditional martial arts and identifled itself according to each other through more researches later. I think that such a comparative analytic researches are necessary in order to spread Taekwondo all over the world and to establish the identity of Taekwondo as Korean traditional martial art and that such researches should be made on the point of view that those concepts on Taekwondo and Taekkyun are not the exclusive but the interdependent ones theoretically.
김동학 순천향대학교 부설 산업기술연구소 2002 순천향 산업기술연구소논문집 Vol.8 No.1
Application of gas-assisted injection molding has been expanded during last two decades because of many advantages such as design flexibility, dimensional stability, reduction of machine tonnages, and so on, However, the surface defects including hesitation mark and gloss difference are observed for thick part. Difficulties in lay-out of the gas channel and processing condition are another disadvantages. Liquid gas-assisted injection molding(LGAIM)is a good alternative of conventional gas-assisted injection molding especcially in manufacturing simple and very thick parts. In this paper, theoretical model is developed to describe the hollow formation dynamics in LGAiM. This model provides an insight into LGAIM process in which he heat activated liquid vaporzes and pushes the melt downstream and creates hollow channels within parts.
초등학교 리듬 및 표현 운동의 학습내용 모형에 관한 연구
김동학 全州敎育大學校 1996 論文集 Vol.33 No.-
Children are more open to western culture rather than our own peculiar dancing circumstances and tunes, and they are better accustomed to western motions and rhythms. This is why they need proper education for their own dancing and tunes, and feelings toward their culture and art they come to experience for the first time in their elementary school life. The aim of this study is to help teachers and teachers-to-be expected from teachers colleges responsible for the desirable management of the new curriculum undertstand foundations of rhythmic and expressive motions, and also to design, based on this understanding, a proper teaching and learning process for rhythmic and expressive motions reflected in the new curriculum. The writer' s desire is that this teaching and learning process will be a basic index necessary for teaching, and will help teachers develop creative thinking and desires as well as help them cultivate senses of self-reliance, creativity, and virtue to be men of good health through physical education.