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스쿼스 운동 참가자의 운동중독이 심리적행복감에 미치는 영향
정윤철(Jung Yun-Chul),왕흥희(Wang Heung-Hee),박경실(Park Kyong-Shil) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.2
The purpose of this study was to examine The effects exercise addiction on psychological happiness in squash club participants. 533 club participants who were the members of the Squash Association in Suwon and had consistently taken part in the squash programs of the sport facilities were selected. We collected the data from them, the differences of exercise addiction from the psychological happiness were verified by the one-way ANOVA according to the participation degree. The relationship between satisfaction and achievement which were subfactor of exercise addiction and psychological happiness was analyzed by using standard multiple regression analysis. Results of this study are as following. At first, on the verification of the differences on the exercise addiction according to the participation degree, the exercise addiction difference in the period showed that the group with more than 3 years was high on the withdrawal symptom, conflict, tolerance and obsession factor. The exercise addiction in the frequency showed the group with more than 3 times a week was high on the conflict and obsession factor, in the intensity, the group with more than 2 hours was high on the conflict and tolerance factor. And there were statistically significant differences. Secondly, attachment factor of the exercise addiction had an effect on the satisfaction, achievement which was the subfactor of the psychological happiness. It could tell that the higher attachment were, the more effect on the psychological happiness of the squash participants in their exercise addiction.
논문 : 기계적 성질 ; Cu-9Ni-6Sn 합금의 기계적 성질에 미치는 Al, Ti, Si, Sb의 첨가효과
정윤철 ( Yun Chul Jung ),한승전 ( Seung Zeon Han ),이정무 ( Jung Moo Lee ),김창주 ( Chang Joo Kim ) 대한금속재료학회 ( 구 대한금속학회 ) 1998 대한금속·재료학회지 Vol.36 No.6
The effects of additions of Al, Ti, Si and Sb on the mechanical properties, electrical resistivity and formation of discontinuous precipitate in Cu-9Ni-6Sn(wt%) alloy have been investigated. The physical and mechanical properties of the Cu-9Ni-6Sn alloy were strongly dependent on aging conditions. This alloy was much strengthened by aging at temperatures below 350℃ where the spinodal decomposition occurs, but the specimen does not be strengthened by aging at temperatures above 400℃ where the discontinuous precipitate forms. Al suppressed the formation of discontinuous precipitation and increased the electrical resistivity. The nucleation of discontinuous precipitate was significantly retarded by the small additions of Ti and Si and the discontinuous product has never formed up to 5h even at 450℃. The addition of Sb. on the other hand, was not affected markedly. In all of the alloys examined, the electrical resistivity was decreased by aging and the degree of reduction increased with increasing aging temperature and aging time.
정윤철 ( Yun Chul Jung ) 한국외국어대학교 언어연구소 2005 언어와 언어학 Vol.0 No.36
The word "個[ge]``in Chinese is the most frequently used classifier, which serves diverse functions, This study purports to examine the functions of ``個[ge]`` in the ``是[shi]+個[ge]+NP`` structure, With this in mind, this paper considers two aspects: i) discourse analysis and ii) property. In terms of discours analysis. the structure of ``是[shi]+個[ge]+NP`` tends to appear at the beginning or end of a discourse (or text). The ``NP`` serves as the topic of ensuing discourses and leads the entire discourse when placed at the beginning, while it marks the end of discourse or signals the transfer in discourse theme when positioned at the end. In terms of property, the ``NP`` can be categorized into two types: i) when a noun has property meaning and ii) when a noun acquires property meaning only after appearing within the structure of ``是[shi]+個[ge]+NP``. In conclusion, the word ``個[ge]`` in the ``是[shi]+ 個[ge]+Np`` structure has lost ist function as a classifier and has grammaticalized as an element of the structure.
논문 : 기계적 성질 ; Cu-9Ni-xSn 합금의 기계적 성질에 미치는 Sn 함량 및 Sn의 역활
정윤철 ( Yun Chul Jung ),김창주 ( Chang Joo Kim ),한승전 ( Seung Zeon Han ),이정무 ( Jung Moo Lee ) 대한금속재료학회 ( 구 대한금속학회 ) 1998 대한금속·재료학회지 Vol.36 No.7
The effects of Sn contents on the mechanical properties and the role of Sn in the Cu-9Ni-xSn alloys have been investigated and the following results have been obtained. The mechanical properties such as tensile strength, elongation and electrical resisitivity of Cu-9Ni-xSn alloys are strongly dependent on aging temperature, aging time and Sn contents. With increasing Sn contents, the tensile strength is increased and the temperature where the spinodal decomposition occurs and the incubation time to start spinodal decomposition are lowered and reduced, respectively. By aging treatment at temperatures below 350℃, the 5%<Sn alloys are much strengthen but the aging effect does not be observed in the 3%>Sn alloys. In the case of the 5%<Sn alloys, the electrical resisitivity is significantly reduced by aging treatment and the degree of reduction increases with increasing the Sn contents and aging temperature. These results obtained in this examination indicate that the strengthening mechanisms of the Cu-9Ni-xSn alloys can be changed by the Sn contents and aging temperature. Considering the results obtained in the present study and the equilibrium phase diagram of Cu-Ni-Sn, the minimum Sn contents to occur spinodal decomposition in the Cu-9Ni--xSn alloys are thought to be about 4wt%.
정윤철(Yun-Chul Jung),김상영(Sang-Young Kim),임준영(Jun-Young Lim) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
최근들어 에너지와 가격문제가 대두 되면서 고효율, 저가격의 모터가 절실히 요구 되고 있다. 이런 관점에서 SRM (Switched Reluctanec Motor)는 유도전동기에 비해 기계적으로 견고하고 자기적으로 간단하며 기동 토크가 몬 장점이 있다. 가격측면에서 SRM은 BLDC 모터에 비해 장점은 있지만 기 존 유도기에 비하면 가격의 상승은 피할 수 없는 상황이다. 본 논문은 기존 유도기와 같은 수준의 가격을 제시할 수 있는 인버터 드라이브 방식을 구 현 하였고 효율은 유도기 대비 월등한 수준을 실현 하였다.
정윤철(Jung, Yun-Chul) 중국문화연구학회 2021 중국문화연구 Vol.0 No.51
Currently, Korean universities are facing a new environment they have never experienced before. Amid the changes represented by the advent of the Fourth Industrial Revolution, universities must find sustainable ways. The emergence of COVID-19 as an unexpected variable also created a situation in which universities could no longer respond to changes with a passive attitude. The unprecedented environment in front of us is calling for an educational community. This study is based on my personal experience in participating in education policies, my experience in education administration in universities, and the views of an individual researcher engaged in Chinese language education. First of all, the changes in the educational environment surrounding universities were considered from four angles. Based on these considerations, four tasks were presented to be discussed in the Chinese education academic community. The four tasks are as follows. The first is to establish a shared Chinese education system. The second is the design of Chinese education for convergence. The third is the discussion of Chinese language education centered on core competence. The fourth is the development of the All-LINE Chinese teaching method. Through this paper, we hope that the Chinese education academia will be able to play a role as a priming water to look at Chinese education from a more macro perspective and think about the Chinese education system.