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박용남,박인근 충북대학교 과학교육연구소 1999 과학교육연구논총 Vol.15 No.1
After examining the ecology and morphology of Marchantia in order to use as the extra curricular activity teaching material, authors report here the results as following: 1. 0.4∼0.5㎝ of thallus, which was grown from gemma for 6 weeks form gemma cup. 2. The majority of gemma, grown from gemma cup, have two growing points normally. 3. Under the light condition, gemma appears the actinotropism tendency. 4. Marchantia is a excellent plant material to investigate of alternation of generations. 5. Also, one may easily cultures the Marchantia by using gemma or by direct planting of thallus in any one year. Thus, since Marchantia has several advantages for the extra curricular activity teaching material as described above, authors recommand that it can be used as the extra curricular activity teaching material.
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비선형 탄성커플링을 갖는 기관축계의 비틀림강제진동에 관한 연구
박용남 한국마린엔지니어링학회 1998 한국마린엔지니어링학회지 Vol.22 No.3
Marine reduction gears are usually used to increase the propulsion efficiency of propellers for ships powered by medium and small sized high speed diesel engines. Most of shaft systems adopt flexible couplings to absorb the transmitted vibratory torque from the engines to the reduction gears and to prevent the chattering phenomenon of reduction gears. However some elastic couplings show non-linear characteristics due to the variable torque transmitted from the main engines and the change of ambient temperature. In this study dynamic characteristics of flexible couplings sare investigated and their effects upon various vibratory conditions of propulsion systems are clarified. A calculation program of torsional vibration for the propulsion systems are clarified. A calculation program of Results of the program developed are compared with ones of the existing linear method and propulsion systems with the elastic couplings the transfer matrix method is adopted which is found to give satisfied results.
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학생선수 재능기부 사례 분석을 통한 지역사회 청소년 발달(CYD) 과제 탐색
박용남,정도상 한국초등체육학회 2022 한국초등체육학회지 Vol.27 No.4
본 연구의 목적은 학생선수 재능기부 사례 분석으로 재능기부 프로그램의 효과 및 한계점을 밝히고, 스포츠를 통한 지역사회 청소년 발달의 현실적 과제를 탐색하는 것이다. 연구참여자는 경남 J시 G초교에서 약 3년간 운영된 학생 재능기부 프로그램에 참여한 일반학생(4명), 학생선수(3명), 교사(1명), 지도자(2명)이며, 주된 자료수집 방법은 심층 면담과 비참여관찰이었다. 수집된 자료는 질적 자료분석을 위한 포괄적 분석 절차(이동성, 김영천, 2020)에 따라 충실히 분석되었다. 연구 결과, 학생선수 재능기부 프로그램은 학교와 지역의 연계, 학교-생활-전문체육의 연계를 강화하는 긍정적 효과가 있었다. 그러나 지나치게 높은 교사 의존도와 비체계적인 일방적 봉사라는 재능기부의 한 계점을 함께 드러내었다. 이러한 효과와 한계점을 고려하여, 연구진은 스포츠를 통한 지역사회 청소년 발달 과제를 다음과 같이 제시하였다. 첫째, 공공스포츠클럽의 한 형태로 일반학생, 학생선수가 함께 하는 지역 거점 학교스포츠 클럽의 운영이 활성화되어야 한다. 둘째, 거점 학교스포츠클럽 생성 및 운영 과정에서 지역 단위학교체육진흥회가 중추적인 역할을 해야 한다. 끝으로 시도교육청의 지역 거점 학교스포츠클럽 전환과 대응 연구의 필요성, 거버넌스 참여주체별 역할 정립, 거점 학교스포츠클럽 운영에 있어 학생선수의 재능기부 역할 부여를 제언하였다. The purpose of this study is to analyze a case of student-athletes’ talent donation program(STDP), explore its effects and limitations, and provide implications for community youth development(CYD) through sport. The research participants were students(4 people), student athletes(3), a teacher, and coaches(2) who participated in the STDP operated for about 3 years at G Elementary School in J city, Gyeongnam. The data had been collected mainly based on in-depth interview and focus group interviews. The collected data were analyzed according to the comprehensive analysis procedure for qualitative data analysis(Lee & Kim, 2020). As a result of this study, first, STDP produced a positive effect of strengthening the connection with the school and the local community. Second, STDP revealed the effect of linking school-life-elite sports. Third, however, STDP revealed limitations such as excessive dependence on a teacher and unsystematic and one-sided service. The results of this study suggest that, as a form of public sports club, the operation of local base school sports clubs with general students and student athletes should be activated, and the local school sports promotion association should play a pivotal role in this process for CYD thorugh sport. We requested to convert the school sports department into a school sports club for the local education office, and we believe that related research is needed. In addition, it was d that the role of each participating institutions in governance should be established. And that the role of talent donation should be given to student athletes in the operation of local base school sports clubs.
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박용남,배영숙 국제물리치료연구학회 2019 Journal of International Academy of Physical Ther Vol.10 No.2
Background: Aging reduces cognitive abilities, including visual memory (VM) and visual discrimination (VD). Since common cortical networks subserve eye movement and attention, voluntary eye movement may improve visual attention. Visual selective attention was major role for memory, and visual memory and visual attention are intimately related. Objective: To identify the improvement in VD and VM, after implementing the eye movement program consisting of saccadic eye movement (SEM) and pursuit eye movement (PEM) in the institutionalized healthy elderly. Design: Randomized controlled trial. Methods: The study involved a sample of 36 participants, and the mean age was 79.03 years (range 76~84 years). They were randomly allocated to the experimental group (n=16) and control group (n=20). Participants in the experimental group performed SEM 5 times per week for 4 weeks: twice daily at the same time in the morning and afternoon. The program was carried out for 3 minutes, and it consisted of SEM and PEM. The target’s moving frequency was set at 0.5 Hz. VM and VD at the baseline and post-intervention were measured using Motor-Free Visual Perception test-4 (MFVPT-4). Results: VM significantly improved in the experimental group (p < .01), and significant differences were observed compared to the control group (p < .01). There was no significant change in VD. Conclusion: The eye movement program consisting of SEM and PEM increased VM more than VD. Therefore, eye movement program was feasible interventions for improving VM in institutionalized elderly persons. Key
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