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전정우 한국체육과학회 2004 한국체육과학회지 Vol.13 No.2
The population participating Taekwondo as a sport has been increased to fifty million people, suggesting it not as a just one type of sport, but a body of independent organization. At present ten Universities in Korea recognize Taekwondo as one disciplinary area and Taekwondo department as one academic unit. Therefore, it is necessary to establish theoretical foundation of the Taekwondo in terms of one section of Korean studies groundwork.As one of such efforts, sociological investigation focusing Taekwondo is required on sub-dimensional stratum to human movement studies such as practical area and academical area. In addition, in the school environment study should be concentrated on possibilities that Taekwondo contributes to general health and emotional stabilities. Also, in the competitive Taekwondo cognitive and affective status of athletes were investigated to determine sociological effect of participating sport Taekwondo.
크로스핏 참여 과정에서의 매력 형성요인 및 지속적 참여 방안
전정우,이승민 한국체육과학회 2023 한국체육과학회지 Vol.32 No.5
This study explores the phenomena that appear in the process of participating in CrossFit through a theoretical approach to symbolic interaction, and through this, explores the charm of CrossFit events and presents necessary measures for continued participation of members. In the research method, in-depth interviews with research participants were conducted, inductive category analysis, and consultation with expert groups were conducted. In conclusion, first, a publicity strategy that introduces various exercise programs and improves basic physical strength is helpful. Second, participating in large and small competitions to achieve goals requires an operational strategy to enhance a sense of belonging and community. Third, continuous motivation must be achieved through the presentation of goals and tasks, and the management plan for ties and exchanges between members will also be a method for continuous membership retention.
Effect of Silk Fibroin Hydrolysate on the Apoptosis of MCF-7 human Breast Cancer Cells
전정우,조유영,이광길,이회삼,여주홍,권해용 한국잠사학회 2013 International Journal of Industrial Entomology Vol.27 No.2
Breast cancer is one of the most common cancers among women worldwide. Recentlyanticancer agents have been developed using natural substances. To evaluate the anticancereffect of hydrolysates of silk fibroin (HSF), we investigated the effect of HSF on cell viability andapoptosis of a breast cancer cell line, MCF-7, induced through the mitochondrial pathway. Theresult showed that HSF decreased cell viability in MCF-7 cells in a dose- and time-dependentmanner, resulting in an increase in the sub-G1 phase cell population. HSF increased the levelof the pro-apoptotic Bax protein and decreased the levels of the anti-apoptotic Bcl-2 protein. Inaddition, HSF induced apoptosis in MCF-7 cells through a mitochondria-dependent pathwayby increasing levels of cytochtome c, and cleavage of PARP. Taken together, these findingssuggest that HSF inhibits the proliferation of MCF-7 breast cancer cells through a mitochondriaand caspase dependent apoptotic pathway.
A Double-bent Planar Leaf Flexure Guide for a Nano-scanner: Experimental Report
전정우,김종문,Young-Hyoung Lee,이동연 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.65 No.9
We describe an experimental study on the double-bent leaf flexure-guided nano-scanner introducedin a previous paper [J. Korean Phy. Soc. 57, 1581 (2010)]. The optimally-designed nanoscannerwas fabricated. Its performances were verified using a finite element analysis (FEA). Thenano-scanner is actuated by a voice coil motor. Its characteristics were measured with a laserinterferometer. The first resonant frequency is calculated as 17.1 Hz. The performances of thenano-scanner, including sine tracking capability, a multi-step response, and range of travel checkwere evaluated using various experimental procedures. Test results reveal that the scanner traveledover a 4.0 mm range and had good nano-precision (4 nm).
全廷祐 慶熙大學校 體育科學大學 1991 體育科學論叢 Vol.- No.4
The purpose of this study wae to examine the existing problems and essential factors in every areas for the vitaligation of Taekwondo. The vitaligation of Taekwondo requires all Taekwondo leaders to build the historical theoretical basis of Taekwondo. Under the basis the new educational program should be developed and applied to Taekwondo trainee. The facilities and mnanagemental system should be also reevaluated and provided.
Kohlberg의 도덕성 발달이 스포츠 도덕성에 미치는 영향
전정우 경희대학교 사회체육연구소 1995 體育科學論叢 Vol.- No.8
The judgement level dy Kohlberg is divided into the pre-established custom level, established custom level, and post-established custom level, and the level should be compared ech other to define the proper judgement. this procedure decisions, and the thinking formation is eelieved to have broader aspects when the judgement level develops. it is believed that the judgement level of ethical change by Kohlberg decide the way of functioning in terms of political aspect, economical aspect, social aspect, and culture aspect, and based on this supplement the sport ethics. This will also help to understand the human nature and contribute to the world peace. Finally, the decision procedeure of ethical level by Kohlberg will make us to prepare the new century under the human dignity through the moral and demoatic society.