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유권재 한국체육사학회 1998 체육사학회지 Vol.3 No.-
Although the social structure of prehistoric or ancient age are different from that of recent or modem ages, human activities are almost the same in the instinctive aspect. Especially, in terms of desire, satisfaction, and creation of basic physical activities, the above statement is more true. However, if we approach in different angle, we can find some new facts. For example, hunters in prehistoric ages term how to hunt at childhood and do not practice the hunting method any longer when they grow up, because they believe that depending on their god's will or the force of incantation they can either catch or lose quarries. On the other hand, in ancient times, men not only just practice but also they get training. Their recognition on physical activities and primitive type of sport should be understood in the same view point as we understand their common life activities. The concepts on physical activities and primitive sport are thus naturally changed as time changes. Primitive sport is restricted and regulated by taboo and tradition and on the other hand, recent sport is regulated by written or clearly-stand rules. Namely, rules dominate competition. From the differences between rules of primitive sport restricted by tradition and those of recent sport restricted by rationalized regulations, we can see logical connections between objectives and means. Primitive sport is cultivated from religious celebration or ritual. The charactertics of primitive sport in prehistoric or ancient ages are sacred, mental, and religious. On the other hand, recent and modern sport is secularized, and thus victory, monetary returns, honors are pursued. Men enjoy based in every aspects of their life activities that they can imagine. A play, however, is aimed at some special purpose, and men create a new kind of actuality. Ritual and religious celebration take religious coloration and play an important role in strengthening their group-oriented life. Primitive sport appears as various shape in this sepcial cultural type, and it progresses according to places and times.
유권재,최영덕 한국체육사학회 1996 체육사학회지 Vol.1 No.-
So far, research on the origin of hominid and its development process has hardly been performed, if ever, from the perspective of gymnastics. Most studies have been carried out to a level that the results of archaeology and anthropology are quotated or reinterpreted. It is true that there is something to be considered in research on human nature as a dynamic life since physical change and behavior are focused on socio-cultural aspects. There is a very important thing that requires our attention. It is of great significance to study the origin of man and its development process, particularly physical change in gymnastics which regards the human body as a subject. An answer to the fragmental question of how man gets the current physical condition can be found in evolution theory. But we will fail to understand the value of our body and meanings of physical activities without study and interpretation on how?, through what process? and how he gets the current physical condition?. If independant theories on physical change are not to be established in gymnastics, serious mistakes may be made on the role of Physical Education. It is also difficult to suggest the future of gymnastics. Therefore, this is the basic approach for gymnastics to satisfy the modern society when research on human nature is absolutely needed. The attempts to understand human physical changes through physical anthropological adaptation theories will pave the way for drawing out the genealogy of hominid by identifying how and why a human body has changed.
Polyethylene Terephthalate Film의 열자극전류 특성
유권재,이종규,김영전 충남대학교 자연과학연구소 1988 忠南科學硏究誌 Vol.15 No.1
Investigation on the characteristics of the TSC in Polyethylene terephthalate film were carried out at temperature region from 273K to 500K. As a result of the investigation, four peaks were identified such as peak A(359K), peak B1, B2(391K, 410K), peak C(473K). Those may be concluded to be respectively due to the depolarization of dipoles, the thermal release of the traped electron and the effect of space charge. Furthermore trap energy depths such as 1.23 eV and 1.30 eV for B1, B2 were obtained on the specimen by mean of initial rise method.
Electrical transport properties of graphene-covered-Cu wires grown by chemical vapor deposition
유권재,E.K. Seo,S.J. Kim,김원동,M.G. Park,H. Yu,황창용 한국물리학회 2012 Current Applied Physics Vol.12 No.1
We investigated the field-effect transistor (FET) characteristics of 15-mm graphene-covered copper wires (G-wires). Unlike the previously reported graphene FET, carries initially showed p-type like FET characteristics in two-terminal transport measurements. Our results indicate that the electrical transport processes in a G-wire FET occur in both the heavily p-doped contact and the p-doped radial graphene channel, as a p-channel. The interfacial potential barrier between the contact electrode and the radial graphene channel is small, but there is a radial potential barrier that limits electrical transport through the copper core in chemical vapor deposition (CVD) grown samples. The p-type FET characteristics appeared clearly after the oxidation of the G-wires.
Polyethylene Terephthalate Film의 열자극전류 특성
유권재(Kwon Jae Yoo),이종규(Jong Kyoo Lee),김영전(Young Jurn Kim) 호서대학교 중앙도서관 1993 호서대학교 논문집 Vol.1 No.-
Investigation on the characteristics of the TSC in Polyethylene terephthalate film were carried out at temperature region from 273K to 500K. As a result of the investigation, four peaks were identified such as peak A(359K), peak B1, B2(391K, 410K), peak C(473K). Those may be concluded to be respectively due to the depolarization of dipoles, the thermal release of the traped electron and the effect of space charge. Furthermore trap energy depths such as 1.23 eV and 1.30 eV for B1, B2 were obtained on the specimen by mean of initial rise method.