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체육학 전공자의 국가자격과 고용관점에서 바라본 정체성 및 전문성 고찰
조민행 한국체육철학회 2013 움직임의철학 : 한국체육철학회지 Vol.21 No.2
The purpose of this study was to provide a review of current issues concerning the identity and professionalization of sports and recreation studies in higher education. A search for articles published was doing using keywords such as identity, academia, and professionalization of sports and recreation studies. Sports, physical education, and recreation studies should concentrate on the knowledge-creating studies rather than making knowledge the basis of the developed theories of other studies. While there is much developed in sports, physical eduction, and recreation studies of higher education, the statistics relating college education are striking, There are considerable problems about college education, national certification, and labor force for students associated with physical education, sports, and recreation studies in higher education. Research and scientific information on the causes and consequences of work forces for person holding degree in sport related studies in higher education form the platform on which to build our national polices to promote work forces. To increase opportunities to ensure access to labor market for students majoring sports and recreation studies, the national certification should get license that grants permission to an individual to engage in an occupation. 이 연구는 대학의 체육학 문제점으로 꾸준히 제기되는 정체성과 전문성에 대한 인식범위를 다차원 접근의 교육-자격-직업의 선순환 구조 속에서 이론적 고찰을 하였다. 이를 위해 체육학 발달, 체육학의 정체성과 학문성, 체육학의 전문성 등에 대한 문헌자료를 이용하였다. 특히, 대학의 체육학이 학문으로 기능하기 위해서는 타 학문 분야의 정보와 지식, 연구방법 등을 차용하는 타 학문의 의존성에서 벗어나 체육학의 개념과 이론, 연구방법 등이 타학문 분야에서 활용되는 상호의존의 학문적 소통이 이루어져야 한다. 체육학의 학문적 정체성에 중요한 요소로 간주되는 것이 전문성이며, 교육활동을 통해 생산력 증진을 도모하기 때문에 교육-자격-직업의 선순환 구축이 중요하다. 이러한 관점에서 체육학 전공자를 위한 교육, 체육학 전공자만을 위한 국가자격 제도, 체육부문의 국가자격 취득자만이 노동시장에 진입할 수 있는 선순환 구축이 필요하다. 따라서, 국가자격은 대학의 체육계열 학위 취득자만이 득할 수 있는 자격의 인정 범위를 명확히 해야 하며, 체육분야의 국가자격이 면허형 및 의무고용형의 자격이 되도록 법률적 규율의 강화가 요구된다.
레이저 표면 텍스처링된 폴리옥시메틸렌 스러스트 베어링의 마찰에 대한 연구
조민행,박상일,이재봉,이성혁,김주한 한국트라이볼로지학회 2009 한국트라이볼로지학회 학술대회 Vol.2009 No.6
Friction tests in lubrication environment were performed on polyoxymethylene (POM) thrust washer samples which were groove-patterned by laser surface texturing technique. The width of groove and concentration against the total normal contact were about 100 μn and 20%, respectively. The lubricant used was SAE 5W-30 motor oil and it was stored inside the oil chamber during sliding test. The applied pressure was 12.58 ㎪ and sliding tests were carried out for 10 minutes with different sliding speeds of 0.1, 0.5, and 1.0 m/s. The sliding speeds ensured the steady state of friction. Test results indicated that the coefficient of friction decreases with grooves normal to the rotation direction and the degree of reduction becomes larger with the increase in sliding speed. Few of wear tracks on POM surfaces were found along the sliding direction, and it is concluded that they were from initial contact and subsequent rotational motion, while the steel counterface rests on the POM surface.
Coherent Two-Dimensional Optical Spectroscopy
조민행 대한화학회 2006 Bulletin of the Korean Chemical Society Vol.27 No.12
Theoretical descriptions of two-dimensional (2D) vibrational and electronic spectroscopy are presented. By using a coupled multi-chromophore model, some examples of 2D spectroscopic studies of peptide solution structure determination and excitation transfer process in electronically coupled multi-chromophore system are discussed. A few remarks on perspectives of this research area are given.
조민행 대한기계학회 2009 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.23 No.8
The role of transfer films formed during the sliding of polymer composites against steel counterfaces was studied in terms of the tribological behaviors of the composites. The composites were prepared by compression molding and sliding tests were run in pin-on-disk sliding configuration. The counterface was made of tool steel hardened to 55-60 HRC and finished to a surface roughness of 0.09-0.10 μm Ra. Wear tests were run for 6 hrs at the sliding speed of 1.0 m/s and contact pressure of 0.65 MPa. Transfer films formed on the counterfaces during sliding were investigated using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). The results showed that as the transferfilm became smooth and uniform, the wear rate decreased. The examination of worn surfaces using Energy Dispersive Spectroscopy (EDS: dot mapping mode) showed the back-transfer of the steel counterface material to the polymer pin surface. This behavior is believed to strengthen the polymer pin surface during sliding thereby contributing to the decrease in wear rate.
나노 CuO입자로 충진된 PTFE 나노복합소재의 저속 및하중 조건에서의 트라이볼로지 특성에 관한 연구
조민행,김정환 한국트라이볼로지학회 2023 한국트라이볼로지학회지 (Tribol. Lubr.) Vol.39 No.3
This paper presents an experimental investigation of the tribological characteristics of PTFE composites filled with nano CuO particles under low sliding speed and load. All the specimens were prepared by sintering. Before sintering, the mixture of PTFE powder and CuO particles were mixed by a high-speed mixer using CuO volume fractions of 0.2 vol. % and 5 vol. %. Each mixture was sintered at 350 °C for 30 min on the steel disk. We conducted ball-on-disk sliding test an hour using a steel ball against PTFE composites, including pure PTFE. The load and sliding speed used was 2 N and 0.01 m/s, respectively. Adding nano CuO particles increases the friction coefficient because of the abrasiveness of hard nano CuO particles. The highest coefficient of frictions was obtained from 5 vol. % CuO. Conversely, the lowest wear of the composites was obtained from the 5 vol. % CuO nanocomposite. This study reveals that the addition of nano CuO particles can lower the wear of PTFE, despite an increase in the coefficient of friction. However, the coefficient friction is still moderate compared to other engineering polymers. In addition, the amount of CuO nano particles has to be optimized to reduce friction and wear at the same time.