우수 장거리 스피드스케이트 선수의 경기력 수준별 허리관절, 무릎관절의 등속성 근기능 특성

전용균(Jeon yong-Kyun),김정우(Kim Jeong-Woo) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.3

It is assumed that developmental characteristics on Performance Level of Long-Distance Speed Skater’s are subjects to isokinetic muscle functions of the trunk, knee. Thus the present investigation was aimed to characterize the isokinetic muscle function of Long-Distance Speed Skater’s based on their performance levels. In addition, the information derived from the results of study will be applied to improve their performance levels and fitness training program. The subjects of this study were male Long-Distance Speed Skater’s registered in KOREA SKATING UNION who are participating in games. They were divided into two groups, the national team group of 10 skaters (ranking of 1~12) and the non national team group of 10 skaters (rankingof 13~24). Cybex HUMAC NORM was employed to measure isokinetic the trunk, knee joint, muscle functions employed. According to results, the following conclusions were obtained. 1. Isokinetic muscle functions of the trunk were higher in the national team then in the non national team. There was a significant difference in peak torque, peak torque, average power, and endurance ratio(p<.05, p<.01, p<.01). 2. Isokinetic muscle functions of knee were higher in the national team then in the non national team. There was a significant difference in ipsilateral balance ratio and endurance ratio were higher in the national team. There was a significant difference(p<.05, p<.01). The results suggest that the long distance speed skaters with the high performance level showed an appropriate trunk, knee muscular function to their events and there was a significant difference each factors. It suggests that the development of endurance muscular strength and muscular peak torque is required for training long distance skaters.

Suspended Strip Line의 Open End 및 Step 불연속 효과에 대한 고찰

전용구(Yong-Ku Jeon),양승인(Seung-In Yang) 대한전자공학회 2008 電子工學會論文誌-TC (Telecommunications) Vol.45 No.12

Suspended Strip Line의 Open End와 Step 불연속 효과의 등가회로를 구하였다. 각 불연속 효과를 표현하는 회로정수들을 EM 해석 결과로부터 최적화한 후 수식으로 표현하였으며, 수식의 계수들은 모든 임피던스 경우에 맞도록 curve fitting을 통하여 구하였다. The equivalent circuits of Open End and Step discontinuity effects for Suspended Strip line are obtained. The circuit parameters for each discontinuity effect are represented by equations after optimization based on EM analysis results, and the coefficients of the equations are obtained by curve fitting for all impedance cases.

발효유 산물인 LHFM의 인지기능 개선 효과

전용진(Yong-Jin Jeon),김준형(Jun-Hyeong Kim),이명재(Kim, Myong-Jae Lee),전우진(Woo-Jin Jeon),이승훈(Seung-Hun Lee),연승우(Seung-Woo Yeon),강재훈(Jae-Hoon Kang) 한국식품과학회 2012 한국식품과학회지 Vol.44 No.4

본 연구팀의 선행 연구 결과, L. helveticus IDCC3801의 발효유 주정 침전물이 BACE의 활성 억제를 통한 amyloid beta(Aβ) 생성 저해효과를 갖고 있음을 확인하였다(15). 이러한 결과를 바탕으로 L. helveticus IDCC3801의 발효유 주정 침전물의 산업화를 위한 공정 개선연구를 진행하였고, 대량생산을 통해 LHFM을 확보하였다. 본 연구는 LHFM의 인지기능 개선 기능성 입증 연구로써 Aβ 저해효과 외에 신경세포 보호효과 및 기억력 개선 효능을 확인하고 어떠한 작용 기전으로 개선 효과가 나타나는지 조사한 것으로 scopolamine으로 기억 손상을 유발한 mouse에서 학습 능력과 기억력 개선 효과, 신경세포 보호 효과, AChE 저해와 ACh 증가 효과 등을 평가하였다. LHFM은 신경세포 사멸을 유도하는 고농도의 glutamate가 존재하는 환경에서 농도 의존적으로 신경세포의 사멸을 억제하여 신경세포를 보호하였다. 또한 LHFM은 in vitro에서 농도 의존적으로 강력하게 AChE의 활성을 저해하였다. 이러한 in vitro 결과들을 근거로 scopolamine으로 기억 손상을 유발한 mouse에서 Morris water maze와 Y-maze 행동 시험을 통해 LHFM의 학습능력과 기억 개선 효과를 조사하였다. LHFM은 Morris water maze에서 실험 2일째부터 escape latency시간을 유의적으로 감소 시켰으며 5일째에서는 정상 mouse와 동등한 수준으로 감소되어 우수한 학습 효과를 보였다. 실험 6일째 platform을 치운 후 시행한 probe trial에서도 platform이 있던 위치에 머무는 회수가 scopolamine을 단독으로 처리한 것보다 유의적으로 높아 장기기억의 개선에도 효과가 있었다. Y-maze 시험에서도 LHFM은 scopolamine 단독 처리군과 비교하여 뚜렷하게 변경 행동력을 증가시켜 여러 행동 시험을 통해 LHFM의 인지기능 개선 효과를 확인하였다. 행동실험 후 hippocampus를 적출하여 ACh 및 AChE의 활성을 측정한 결과, donepezil과 마찬가지로 LHFM은 AChE의 활성을 유의적으로 억제하였으며 또한 ACh 함량도 증가시켰다. 결론적으로 LHFM은 신경세포 보호 효과와 신경전달물질인 ACh의 뇌 조직 내 농도를 높여 인지기능 개선 효과를 보이는 것을 확인하였다. Probiotics and their products, such as yogurt and cheese have been widely consumed in many countries with proven health benefits including anti-microbial activity and anti-diarrheal activity. LHFM (Lactobacillus helveticus-fermented milk) is a processed skim milk powder, fermented by a probiotics, L. helveticus IDCC3801. In the present study, we aimed to investigate the neuroprotective effects and the cognitive improvements of LHFM. LHFM itself did not show any cytotoxicity to the human neuroblastoma cell line, SH-SY5Y; however, it dose-dependently protected against glutamate-induced neuronal cell death. LHFM also attenuated scopolamine-induced memory deficit in Y-maze and Morriswater maze. In the analysis of hippocampus after a behavior test, LHFM significantly increased the acetylcholine level and also inhibited acetylcholine esterase activity. Therefore, the raised acetylcholine release partially contributes to the improvement of learning and memory by a treatment with LHFM. These results suggest that LHFM is an effective material for prevention or improvement of cognitive impairments caused by neuronal cell damage and central cholinergic dysfunction.

한국 프로야구 관중추이 분석

전용배(Yong Bae Jeon),남중웅(Joong Woong Nam) 한국사회체육학회 2002 한국사회체육학회지 Vol.18 No.1

The purpose of this study was to analyze and examine the attendance changes and profit structures in Korean Professional Baseball. This paper also explored the reasons why korean professional Baseball League has been unable to establish itself as a profit organization. The suggestion is made that the attendance change, limited support by commercial television stations and industry have contributed to the issue. The background and current situation are analysed and future recommendations made. The paper attempt to discuss factors contributing to the circumstances and endeavour to imply possible solutions. The research based on literature review and official data offered by Korean Baseball Organization. The statistical techniques used for the analyzed of relationship between attendance change and city population, stadium capacity were pearson`s correlation. The results of this study were as follow: 1. The most important factors related to attendance record were city population and stadium capacity. 2. In average attendance, the leading teams were as follow LG, Lotte, Doosan, Samsung etc. 3. LG, Doosan, Lotte which has big city franchise were taking advantage and benefit getting attendance easily.

온실가스 고려 유무에 따른 근해어업의 업종별 생산성 변화 비교분석

전용한(Yong-Han Jeon),남종오(Jong-Oh Nam) 한국해양비즈니스학회 2021 해양비즈니스 Vol.- No.49

As carbon neutral has emerged as a new paradigm for climate change globally, this study aims to analyze productivity changes in offshore fisheries with or without consideration of greenhouse gas(GHG) emissions and to present policy implications. As an analysis method, the Global Malmquist Luenberger productivity index and the Global Malmquist productivity index were used to analyze and compare the productivity by year and by fishery for offshore fisheries. In addition, the Mann-Whitney U test was adopted to see if the difference in productivity was statistically significant. As a result of the analysis, firstly the cumulative productivity increased by 4.3% excluding GHG emissions, but decreased by 3.89% including GHG emissions. Second, the cross-period average productivity rose 0.85% except for GHG emissions, but fell 0.79% containing GHG emissions. Third, the productivity of 13 gears in offshore fisheries decreased by 0.03∼7.3% including GHG emissions, and the differences in each gear’s productivity with or without consideration of GHG emissions were statistically significant within 10% significance level. Based on the analysis results, it was suggested that the new fishing vessel project, development of electric hybrid fishing vessels, and fishing vessel reduction project should be implemented to improve the productivity of offshore fisheries.

온실가스를 고려한 연근해어업의 생산효율성 분석

전용한 ( Yonghan Jeon ),남종오 ( Jongoh Nam ) 한국환경경제학회·한국자원경제학회(구 한국환경경제학회) 2021 자원·환경경제연구 Vol.30 No.1

본 연구는 기후변화 이슈가 부각되는 환경에서 온실가스 배출량 고려 유무에 따른 연근 해어업의 업종별 효율성을 비교하고, 분석 결과를 바탕으로 정책적 대안을 제시하는 데 목적이 있다. 분석을 위해 전통적인 자료포락분석(DEA) 모형과 잔여기반측정(SBM) 모형, 비소망재 SBM 모형을 이용하고, Robust Analysis of Variance (ANOVA) 검정과 Wilcoxon Signed-rank 검정을 시행하였다. 분석결과, 전통적인 DEA 모형에서 여분을 고려한 SBM 모형, 온실가스 배출량을 고려한 비소망재 SBM 모형으로 확장될수록 어업의 평균 효율성은 감소하는 것으로 분석되었다. 구체적으로 전통적인 DEA 모형과 SBM 모형, 비소망재 SBM 모형의 평균 효율성은 각각 0.7350, 0.5820, 0.4976으로 추정되었다. 또한 Robust ANOVA 검정과 Wilcoxon Signedrank 검정결과, 전통적인 DEA, SBM, 비소망재 SBM 모형 간 효율성 차이와 근해어업과 연안어업의 효율성 차이도 통계적으로 유의하게 분석되었다. 분석의 정책적 대안으로, 연근해어업의 효율성 개선을 위해서는 신조어선사업의 적극적 시행과 함께 스마트어선 및 전기복합어선 개발 등이 필요함을 제안하였다. In the circumstance of standing out the climate change issue, the purpose of this study is to compare the efficiency of offshore and coastal fisheries according to whether or not greenhouse gas (GHG) emissions are considered, and then to present policy alternatives based on the analysis results. For analysis, the traditional data envelopment analysis (DEA), the slacks-based measure (SBM) and the SBM-undesirable models were used, and robust analysis of variance (ANOVA) and Wilcoxon Signed-rank tests were performed. As a result, the study showed that the average efficiency of fisheries decreased as the traditional DEA extended to the SBM model considering the slack and the SBM-undesirable model including the GHG emissions. Specifically, the average efficiency of the traditional DEA model, SBM model, and SBM-undesirable model was analyzed as 0.7350, 0.5820 and 0.4976 respectively. In addition, the results of the robust ANOVA and Wilcoxon Signed-rank tests all showed that there are statistically significant differences in efficiency between offshore and coastal fisheries as well as among traditional DEA, SBM and SBM-undesirable models. As a policy alternative to the analysis, it was suggested that to improve the efficiency of coastal and offshore fisheries, it is necessary to actively implement the new fishing vessel project and develop smart and electric hybrid fishing vessels.

IC카드를 위한 Soft masking 방법의 설계 및 구현

전용성(Yong-Sung Jeon),주홍일(Hong-Il Ju),전성익(SungIk Jun) 대한전자공학회 2002 대한전자공학회 학술대회 Vol.2002 No.6

프로야구 관람자의 플로우(flow)경험 척도 개발과 타당성 검증

전용배(Yong Bae Jeon),하제현(Jae Hyun Ha),김종백(Jong Back Kim) 한국사회체육학회 2011 한국사회체육학회지 Vol.0 No.46

The purpose of this study was to develop and validate flow experience scale toward professional baseball spectators. In order to achieve this study, using a convenient sampling method, total 400 questionnaires were distributed to professional baseball spectators who attended a home game at the city of Busan. Among them, seventeen questionnaires were excluded because they were inappropriate. There were 383 usable questionnaires. Data were analyzed with frequency analysis, descriptive statistics analysis, exploratory factor analysis, reliability analysis, and confirmatory factor analysis using SPSS Ver. 17.0 Window Program and AMOS 7.0. The results of this study indicated that flow experience scale consisted in 6 factors(Involvement, Knowledge, Challenge, Arousal, Interactivity, Positive Affect) based on the results of descriptive statistics analysis, exploratory factor analysis, and reliability analysis. The results of confirmatory factor analysis revealed that 6 factor measurement model satisfied overall model fit of flow experience scale, construct validity, and SMC(squared multiple correlations). Practical implications of the findings and directions for future study were discussed.

서구 ‘환상성’이론에서 본 나도향의 「꿈」 - 장르의 구성요건을 중심으로 -

전용갑 ( Jeon¸ Yong Gab ) 세계문학비교학회(구 한국세계문학비교학회) 2020 世界文學比較硏究 Vol.72 No.-

환상이란 용어는 흔히 ‘실재’의 반의어로 이해된다. 그러나 실재하지 않는 것이 존재하지 않는 것은 아니다. 따라서 환상문학의 논의에서 ‘환상’의 개념은 존재의 개연성 자체가 배제되는 ‘비존재’의 개념, 즉 ‘초자연’의 요소로 이해하여야 한다. 하지만 ‘초자연적 요소’가 현존한다고 해서 모두가 ‘환상’인 것은 아니다. 초자연적 요소는 동서고금의 모든 문학에 두루 편재하는 문학의 역사 그 자체라고 보아도 무방하기 때문이다. 근대문학장르로서의 환상문학은 ‘현실’의 자장 내에서 발생하는 초자연적 사건에 한해 ‘환상’의 자격을 부여한다. 이는 이 문학이 ‘이성중심주의에 대한 회의’라는 인식론적 세계관을 함의하고 있기 때문이다. 따라서 18세기 후반 낭만주의를 시대적 배경으로 탄생한 환상문학 장르는 비슷한 시기 모습을 보인 추리소설과 마찬가지로 “완성된 형태로 태어났다.”고 볼 수 있다. 본 논문에서는 장르의 성립 조건을 크게 ‘존재의 개념(즉, 비존재)과 연관된 초자연적 요소의 현존’, ‘사실주의적 경향’, ‘비극적 결말과 세계관’의 세 가지 필수적 요소와 ‘문화적 상대성’, ‘신환상성과의 관계’ 등 두 가지 부가적 요소로 제시하였다. 그리고 장르 성립을 충족하는 국문학의 사례로 20세기 초 나도향의 「꿈」을 분석하였다. 이 연구는 건조한 장르적 개념을 거푸집 삼아 이루어졌으며 작품의 미학적 가치는 고려의 대상에서 배제하였다. 나도향의 「꿈」은 근, 현대 한국문학에서 서구의 환상문학이론에 가장 잘 부합하는 대표적인 사례 중의 하나라고 판단된다. 이는 사회 현실을 인간 내면의 원초적 감성으로 그려내고자 했던 작가의 전반적인 문학적 성향을 고려할 때 우연이 아닐 것이다. 그에게 현실은, 환상문학과 마찬가지로 수용하기 어려운 의문과 이해 불가의 대상이었을 것이기 때문이다. In order to address ‘fantastic literature’, it is essential a profound understanding of the concept of the genre, since the meanings involved in the term of ‘fantasy’ are too varied and broad, in addition to the fact that literary tradition -which deals with ‘fantasy’- is very olden. In particular, if fantasy literature is considered as a product of Romanticism, which was born with a specific worldview at the end of the 18th century-an epistemological reaction against Western ‘logocentrism’ -it is necessary to delimit it from other neighboring genres such as myths, medieval tales, fairy tales, magic realism and ‘lo real maravilloso americano(The Marvelous Real in America)’, among others. Doubtlessly, the effects of ‘the fantastic’, which are mechanisms of emotional and epistemological reactions caused by supernatural phenomena, can be relative according to the historical-cultural context of each society. No matter how different cultures are, the concept of ‘reality’ always prevails; likewise, the common purpose of ‘the fantastic’ genre is to pose an essential question about that idea of ‘reality’. In this sense, works of fantastic literature from different cultures can be analyzed with an identical methodology. In this research, after examining the constituent elements defined in the fantastic Western theory, “The dream” -tale written by Ra Do-Hyang (Korea, 1902-1926) - shall be analyzed. The abovementioned literary work is very remarkable from the ‘fantastic genre perspective’, as it satisfies most of the basic prerequisites of the ‘fantastic’ theoretical framework. Likewise, in this academic article, biographical elements and aesthetic aspects of the text shall be excluded, which are generally considered in the study related to the author. Thus, just the main rules required by fantastic literature shall be used to compare consistency between text and genre.

경찰 정당성이 법의식에 미치는 영향에 관한 연구

전용재 ( Jeon Yong Jae ) 한국경찰학회 2021 한국경찰학회보 Vol.23 No.1

준법행위는 사회통제의 요체인 까닭에 경찰학의 주요 연구대상이 되었다. 준법행위는 이면의 동인에 따라 능동적이거나 수동적이다. 보상과 처벌을 활용한 수동적 준법행위는 일시적이며 불안정한 반면 정당성에 기인한 능동적 준법행위는 개인의 내적인 태도와 결부되기에 자발적이며 장기적이다. 이에 경찰학에서는 경찰 정당성의 원인과 결과가 지속적으로 고찰되었다. 다만 경찰 정당성의 결과로서 준법행위만 논의된 점은 한계로 분석되었다. 경찰 정당성에서 출발하는 준법 행위의 근간에는 법규범에 대한 내적인 가치 판단이 존재하는 까닭이다. 이에 이 연구에서는 준법행위와 내적인 가치 판단을 법의식이라는 상위의 개념으로 포괄한 후 경찰 정당성의 영향력을 검증하였다. 다중회귀분석을 실시한 결과 경찰 정당성은 준법행위에만 통계적으로 유의미한 정(+)적 영향을 미치는 것으로 확인되었다. 비록 경찰 정당성이 법규범의 우호성이라는 정서를 유발하지는 못하였으나, 준법 행위는 유도하는 만큼 정당성의 의의를 역설하였다. Law-abiding acts have become a major subject of research in police science because it is an vital element of social control. The law-abiding acts are active or passive depending on drivers behind them. While passive law-abiding acts using compensation and punishment are temporary and unstable, active law-abiding acts due to legitimacy are voluntary and long-term because they are related to an individual's internal attitude. Thus, causes and consequences of police legitimacy have been studied in police science. However, the fact that only law-abiding acts were discussed as a result of police legitimacy was considered as a limitation. This is because behind the law-abiding acts, which start with police legitimacy, there is an internal value judgment on the law and criminal. Hence, this study included law-abiding acts and internal value judgment as a higher concept of legal consciousness and then verified the influences of police legitimacy. Multiple regression analysis shown that police legitimacy had a statistically significantly positive effect on law-abiding acts only. Although police legitimacy did not arouse legal favorability, the importance of legitimacy was not denied as it still induced the law-abiding acts.