교통빅데이터를 활용한 심야버스 노선계획 방법론 연구

전용현(JEON, Yong Hyun) 대한교통학회 2024 교통 기술과 정책 Vol.21 No.2

무산소성 파워 운동 후 회복방법의 차이가 SOD CAT MDA에 미치는 영향

전용균(Jeon, Yong-Kyun) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.5

The purpose of this study was investigation difference in the recovery of after acute anaerobic exercise on antioxidant enzymes(SOD, CAT, MDA,). The subjects of this study were 30 males in their 20s with to participate in after acute anaerobic exercise taken as research subjects, the research was performed upon 10 person of ice therapy recovery group, 10 persons of massage recovery group and 10 person of dynamic cool-down recovery group depending on the difference of recovery after acute anaerobic exercise. As a result of the research, SOD showed significant increase in ice therapy recovery group, massage recovery group and dynamic cool-down recovery group after the acute anaerobic exercise, and ice therapy recovery group and massage recovery group showed higher values than dynamic cool-down recovery group. CAT showed significant increase in ice therapy recovery group and massage recovery group after the acute anaerobic exercise, but no significant difference dynamic cool-down recovery group, and ice therapy recovery group and massage recovery group showed higher values than dynamic cool-down recovery group. MDA showed significant decrease in ice therapy recovery group and massage recovery group after the acute anaerobic exercise and ice therapy recovery group showed higher values than dynamic cool-down recovery group. Therefore, as the degree of oxidation damage in relation to acute anaerobic exercise is very likely to depend on whether and in what type ice therapy recovery and massage recovery is done, practice of ice therapy recovery and massage recovery effective by exercise types also is considered as a method to prevent oxidation damage.

LED 조명용 One-Stage PFC Flyback 컨버터에서의 출력단 리플 저감과 전해 커패시터의 제거에 관한 연구

전용성(Yong-Sung Jeon),진달래(Dal-Lae Jin),나재두(Jae-Du La),김영석(Young-Seok Kim) 대한전기학회 2012 전기학회논문지 Vol.61 No.11

In the lighting industry, a Lighting Emitting Diode (LED) is increasingly used because of many advantages and a eco-friendly product comparing with the conventional lighting. However, the LED lighting has to include various AC/DC converters because the direct current is used for the LED lighting. Among a lot of power converters, the flyback converter is widely used for the LED lighting and includes some electrolytic capacitors for the voltage regulation. But the electrolytic capacitor has shorter lifetime than the LED element. It makes the expected life-time of the converter having the electrolytic capacitor shorter than the LED element. This paper proposes the single-stage PFC flyback converter without electrolytic capacitors. To verify the performance of the proposed converter, simulated and experimental works were carried out.

운동강도에 따른 중년여성의 수면관련인자와 치매관련인자의 관련성

전용균(Jeon, Yong-Kyun),고보라(Koh, Bo-Ra),이지영(Lee, Ji-Young) 한국웰니스학회 2018 한국웰니스학회지 Vol.13 No.4

이 연구의 목적은 운동강도에 따른 중년여성의 수면관련인자와 치매관련인자의 관련성을 알아보기 위해 실시되었다. 연구대상은 대한민국 경기도 소재 중년여성(50~64)으로 신체적으로 병력이 없는 30명을 선정하였다. 집단분류는 저강도 유산소운동집단(LIEG, 40%VO2R, n=10), 중강도 유산소운동집단(MIEG, 60%VO2R, n=10), 통제집단(CG, n=10)으로 하였다. 운동은 12주간 주3회로 실시하였고, 운동방법은 트레드밀을 이용하였으며, 운동시간은 운동량을 동일화하기 위해 200kcal소모에 맞는 운동시간을 산출(ACSM)하여 개개인에게 적용시켰다. 실험결과 12주간의 강도별 유산소 운동 후 세로토닌 변화는 중강도 유산소운동집단(MIEG)에서 유의한 차이로 증가하였고((p<.05), 저강도 유산소운동집단(LIEG)과, 통제집단(CG)에서는 유의한 차이가 나타나지 않았다. 또한 강도별 유산소 운동 전・후 집단 내 수면의 질과 DHEAs는 중강도,저강도 유산소운동집단에서 유의한 차이로 증가하였다(p<.05)((p<.05). 그러나 베타아밀로이드의 변화는 중강도, 저강도 유산소운동집단과 통제집단 모두 통계적으로 유의한 차이가 나타나지 않았다. The purpose of this study is to examine the relationship between sleep-related factors and dementia-related factors in middle-aged women with exercise intensity. The subjects of this study are 30 students with no history of physical illness from middle-age women(50~64) which is located in Gyeonggi do Republic of Korea. The groups were divided into low intensity exercise group, middle intensity exercise group and control group. The homogeneity among the groups were verified. The exercises were performed 3 times per week in the duration of 12 weeks using treadmills. The Aerobic exercises were designed to burn 200kcal and the exercise time for each group was calculated for the consumption of 200kcal and the exercises were applied to each individual for the duration of 12 weeks. Before and after 12 weeks of aerobic exercises of different levels, the middle intensity exercise group showed a significant increase in serotonin when at rest ((p<.05) but low intensity exercise group and control group was showed no significant. Also Before and after 12 weeks of aerobic exercises of different levels, the middle and low intensity group level exercise group showed a significant increase in quality of sleep and DHEAs((p<.05)((p<.05). But β-amyloid was showed no significant.

기간별 음악줄넘기 참여가 비만 초등학생의 신체조성 성장호르몬 및 등속성 근력에 미치는 영향

전용균(Jeon, Yong-Kyun),윤성준(Yun, Sung-Jun) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.5

In this study, I analyzed the effects of Music Rope-Skipping exercise on the body composition, growth hormone and knee joint isokinetic muscle strength of obese children, Targeting female students 5-6 grade, Were divided into a control group (n=15), 6W groups(n=15), 12W group(n=15), according to evaluate the changes in body composition, 12 weeks according to the music Rope-skipping exercise To evaluate the changes in Body Composition, growth hormone and knee joint isokinetic muscle strength. Was a statistically significant decrease from 6 weeks group and 12 weeks group in body compositon (p<. 01), Was significantly increased at 12 weeks group of collective growth hormone(p<.01), Was significantly increased at 6 weeks group 12 weeks group of collective growth hormone (p<.01) (p<.05)(p<.01). As a result, reduced the percentage of body fat and fat mass participation is a long-term music rope-skipping, It was confirmed to be increased the growth hormone, a positive effect in the enhanced strength of the legs.

크로스컨트리 스키 선수들의 ATCN-3 R577X 유전자 분포에 따른 유ㆍ무산소성 능력의 차이

전용균(Jeon, Young-Kyun),이기홍(Lee, Ki-Hong) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.3

The purpose of the this research is to compare the genotype distribution of especially ACTN-3 genotype among the subjects being elite cross-country ski athletes who undertake high level of training and are assumed to have demonstrated high level of athletic performance. It is also aimed to clarify the effect of the genotype on the aerobic and anaerobic sports performance. The results are as follows. ACTN-3 genotype of cross-country ski elite athletes were analyzed. Higher distribution of XX genotype within ACTN-3 genotype was depicted among cross-county ski. After comparing the aerobic performance factors according to polymorphism of ACTN-3 genotype among the cross-country ski elite athletes. After comparing aerobic performance factors according to polymorphism of ACTN-3 genotype among the cross-country ski elite athletes demonstrated the highest level of XX thpe among the various variants reaated to the aerobic performance. The group with XX thpe demonstrates higher level of VO₂max, AT. And statistically there was noticeable difference in XX types(p<.05)(p<.05)(p<.05). Therefore Among polymorphism of ACTN-3 genotype XX genotype is considered to be more suitable for the Aerobic performance.

MIPv6 보안문제 분석

전용수(Yong Su Jeon),이종민(Jong Min Lee),권오준(Oh-Jun Kwon) 한국정보보호학회 2005 情報保護學會誌 Vol.15 No.3

차세대 인터넷 주소체계로 IPv6의 표준화가 마무리단계에 이르러 이동성 지원을 위한 MIPv6(mobile ipv6)의 표준화도 RFC3775[1]로 마무리되었다. 하지만 IPv6를 기반으로 한 MIPv6의 보안 문제점은 완전하게 해결되지 않는 연구과제로 남아있는 상태이다. IPv6의 autoconfiguration 과정에서의 주소중복, DoS공격의 취약점은 IPv6를 기반으로 한 MIPv6에서도 적용되는 보안문제이다. 특히 모바일 단말기의 로밍 환경에서의 HA와 MN간의 보안인증 절차문제, 전원공급으로 인한 bootstrapping 관련 추가적인 보안문제가 있어 보안관련 연구단체에서 연구가 진행 중에 있다.

크로스컨트리 스키 선수들의 ATCN-3 유전자 분포에 따른 무릎관절 등속성 근기능의 차이

전용균(Jeon, Yong-Kyun),이기홍(Lee, Ki-Hong) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.4

The purpose of the this research is to compare the genotype distribution of especially ACfN-3 genotype among the subjects being elite cross-country ski athletes who undertake high level of training and are assumed to have demonstrated high level of athletic performance. It is also aimed to clarify the effect of the genotype on the Isokinetic muscular function of knee sports performance. Gene analysis for each inspection items used genomic DNC in epithelium cell of the mouth. To handle collected data, dual variate analysis was made for examing the association of each measured item usin SPSS statistical program and ATCN-3 Correlation of polymorphisms in accordance with the dependent variables to determine the correlation coefficient was determined and statistical significance of level .05. The results are as follows. ACTN-3 genotype of cross-country ski elite athletes were analyzed. Higher distribution of XX genotype within ACTN-3 genotype was depicted among cross-county sk I. elite cross-country skiers of genetic correlations by type of isokinetic muscular function type and RR and RX type left and right extensor peak torque is higher than the correlation coefficient(P<.01). XX type of endurance ratio in each of the RX type and the correlation coefficient is high, the right extensor (p<.01), respectively. Thus, cross-country skiing elite athletes isokinetic muscular funtion of knee peak torque in the RX, RR genotype, endurance ratio in RX, XX genotype showed relevant.

'교육과정 개발자' 관점에서 바라본 체육교사의 교육적 성장과 교육과정 실천의 의미

전용진(Yong Jin Jeon),이규일(Gyu Il Lee) 한국스포츠교육학회 2011 한국스포츠교육학회지 Vol.18 No.3

학교 교육의 맥락에서 좋은 수업은 개념적으로 ``교육과정 실천``과 깊은 관련을 갖는다. 체육교육 분야에서의 교육과정 실천 연구는 교육과정 문서에 충실한 실천을 지나, 현재 ``교육과정 개발자로서의 교사``로 개념화하며, 좋은 교사 및 수업의 특성들을 제시하고 있다. 그러나 교육과정 실천 연구들은 대개 횡단적 성격의 연구로서, 교육과정 실천의 변화 과정이나 그 속에서 나타나는 교사의 교육적 성장 등에 교육적 의미를 제공하지 못한다. 이에 이 연구에서는 교육과정 개발자로서의 면모를 가지고 있는 연구 참여 교사(Y 교사)의 교육적 성장과정을 생애사적 맥락에서 살펴보고, 이를 통해, 첫째, 교육과정 실천 단계 및 성장의 주요 경험들을 확인하고, 둘째, 교사의 성장과 교육과정 실천의 의미를 살펴보는 한편, 셋째, 좋은 교사로 성장하는데 기여할 수 있는 시사점을 찾고자 하였다. 연구 결과, Y 교사의 교육과정 실천은 도구적 실천, 기능적 실천, 반성적 실천, 교육과정 개발자로서 실천으로 나타났다. 이러한 Y 교사의 교육적 성장 과정은 곧 교육과정 개발자로 성장하는 과정으로 볼 수 있으며, 주요 경험으로 ``만남의 경험``, ``소통의 경험``, ``학습의 경험`` 등을 발견할 수 있다. 이상의 결과를 토대로, 교사의 교육적 성장에 있어 소통의 문화의 중요성을 강조하며, 실천적 방안을 제안하였다. Conceptually, a good teaching in school education should be deeply related with a curriculum practice A curriculum practice have been reconceptualized in ``a teacher as curriculum developer`` over concept of fidelity in a field of physical education. So, The traits of a good teacher and teaching were provided in basis of the context. However, the studies in relation with curriculum practice had attributions of ``crossing``, consequently, those had limits, as like that could not explain the changed process of curriculum practice and educational growth of the teacher. So, in this study I would examine Y teacher who had features as curriculum developer with a methodological perspective of Life Story. The purposes of this study were, firstly, to make sure of the steps of curriculum practice and the main experiences of growth, secondly, to examine the relational meanings of growth of teacher and curriculum practice, thirdly, to provide educational suggestions to contribute to growth of teacher in active service. Y teacher`s curriculum practice were emerged as an instrumental practice, a functional practice, a reflective practice, a creative practice. The main experiences in the process of educational growth was showed as an experience of meeting, an experience of communication, an experience of learning. Lastly, I emphasized on a necessity of communicational culture between teachers, and provided practical plans for that.

자동차보험 계약자의 보험회사 전환 가능성 분석

전용식 ( Yong Sik Jeon ) 보험연구원 2014 보험금융연구 Vol.25 No.3

본 연구는 국내 자동차보험 계약자들이 기존의 보험회사를 떠나 다른 자동차보험회사에 가입하고자 하는 전환의향을 분석한다. 자동차보험 계약자들의 효용이 보험료, 자동차보험 계약· 유지·보상 관련 만족도, 계약자의 보험회사에 대한 충성도 등 심리적 요인들에 영향을 받는다고 가정하고, 보험회사를 전환할 경우 보험료 차이에서 발생할 수 있는 내생성을 고려하였다. 전환의향에 영향을 미칠 것으로 보이는 현재의 보험료와 신규 보험료 간의 차이는 관측되지 못하기 때문에 이를 고려하지 못한 보험료 변수의 추정치는 내생성(endogeneity) 문제에 노출될 수 있다. 그러나 보험료의 차이는 보험계약자의 인구-사회적 특성에 영향을 받기 때문에 인구-사회적 변수가 추정식에 포함될 경우 보험료 추정치의 통계적 유의성은 줄어들고 보험료 변수의 내생성도 약해질 수 있다. 본 연구에서는 보험료에서 나타날 수 있는 내생성을 고려하여 자동차보험 계약자들의 보험회사 전환의향을 추정한다. 추정결과 현재 보험료 수준이 낮을수록, 서비스만족도가 높을수록, 그리고 보험회사에 대한 충성도가 높을수록 전환 가능성은 줄어드는 것으로 분석되었다. 또한 인구-사회적 변수를 포함하여 보험회사 전환의향확률을 추정한 결과 보험료의 통계적 유의성은 없어진 반면, 거주 지역, 근로소득 여부, 나이 등이 전환의향에 영향을 미치는 것으로 나타났다. 분석결과 현재 가입하고 있는 보험회사에서 누리는 서비스 만족도가 크고 충성도가 높은, 혹은 관측되지 않는 보험회사와의 유대 관계가 강한 계약자들의 경우 새로운 보험회사를 탐색하고 전환하려는 의향이 약한 것으로 나타났다. 국내 자동차보험시장에 전환비용(Switching Cost)이 존재한다는 것은 자동차보험회사의 경쟁 및 마케팅 전략과 자동차보험산업의 시장구조에 상당한 함의가 있다고 판단된다. This study focuses on factors for an auto insurance customer`s intention to switch to another auto insurance companies. The collected data by Korea Insurance Research Institute`s Annual Korea Insurance Customers Survey, such as customer satisfaction, loyalty to a current insurance company, annual insurance premium, and individuals` socio-demographic variables, are empirically examined as to have significant influence on probability of a customer`s switching intention. A defected customer could get benefit from switching with reduced auto insurance premium as long as his/her satisfaction level remains the same as an auto insurance company he/she left. In addition to a customer`s satisfaction, loyalty to a current auto insurance company and psychological factors, of which a customer might think important, have significant effect on a customer`s switching intention. Endogeneity could arise since current premium is observable and highly correlated with unobservable premium, which could be offered by another auto insurance company. Since auto insurance premium and customer`s socio-economic variables are correlated to each other, endogeneity problem could have effect on estimation result. This research takes into account this endogeneity problem by estimating instrumental variable probit model. Estimation result shows that the probability of a customer`s switching intention increases in premium and decreases in satisfaction level, a customer`s loyalty, and psychological factors. The findings imply that search and switching cost to defect current insurance company do exist in Korean auto insurance market, which are similar ones as previous literature.