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네트워크 빅데이터 분석을 통한 프로축구 인식변화에 관한 연구
김용래(Kim, Young-Rae) 한국체육과학회 2020 한국체육과학회지 Vol.29 No.6
This study aims to examine the trend of changes in the perception of pro-football by using the network big data. For this, the blogs, cafes, news, and Knowledge In provided by NAVER and Daum were analyzed. This study selected the data for total nine years from January 1st 2011 to December 31st 2019. For the data collection and analysis, this study extracted the frequency and matrix data through a big dada analysis program ‘Textom’, and then understood the connective structure and also analysis the centrality of connection degree between words with the use of Ucinet6. Using the NetDraw function of Ucinet6, the network between words related to pro-football, football, player, league, match, response, pro, Seoul, coach, and club from 2011 to 2013, and they were clustered(CONCOR) into “K-league tour”, “world-wide pro-football”, “player and club”, “K-league administration”, and “citizen club”, which formed four large groups and one small group. Second, the contral value of connection degree was high in the order of pro-football, football, player, league, match, response, pro, Seoul, Korea Professional Football League, and coach from 2014 to 2016, and they were clustered(CONCOR) into “K-league tour”, football infrastructure“, K-league tour”, and “citizen club”, which formed three large groups and on smell group. Third, the central value of connection degree was high in the order of pro-football, football, player, league, match response, pro, Korea Professional Football League, Seoul, and club from 2017 to 2019, and they were clustered(CONCOR) into “globalization of pro-football”, “K-league tour”, “expansion of Korea football to the world”, “prestigious club”, “post-Korea of football players”, “professionalization of women”, and “dream of entry to Europe”, which formed eight large groups.
디젤 엔진의 인젝터 설계 변수가 노즐 코킹에 미치는 영향 분석
김용래 ( Young Rae Kim ),송한호 ( Han Ho Song ) 한국분무공학회 2012 한국액체미립화학회지 Vol.17 No.3
Recent common-rail injector of a diesel engine needs more smaller nozzle hole to meet the stringent emission regulation, But, small nozzle hole diameter can cause nozzle coking which is occurred due to the deposits of post-combustion products, Nozzle coking has a negative effect on the performance of fuel injector because it obstructs the fuel flow inside a nozzle hole, In this study DFSS (Design for six sigma) method was applied to find the effect of nozzle design parameter on nozzle coking, Total 9 injector samples were chosen and tested at diesel engine, The results show that nozzle hole diameter and K-factor have more effect on nozzle coking than A-mass and hole length. Large hole diameter and A-mass, small hole length and K-factor give more positive performance on nozzle coking in these experimental conditions. But, a performance about nozzle coking and exhaust gas emission shows the opposite tendency. More detail studies are needed to find the connection relation between nozzle coking and emission at the optimization work of injector nozzle development.
대형 CNG 혼소 엔진용 천연가스 분사밸브 동특성 연구
김용래(Yong-Rae Kim),최영(Young Choi) 한국가스학회 2017 한국가스학회지 Vol.21 No.5
천연가스 연료는 매장량과 경제성 측면에서 미래 가치가 매우 높기 때문에 여러 가지 이용 기술 개발이 활발하게 이루어지고 있으며 내연기관을 이용한 발전 분야에서도 그 중요성이 점점 증가하고 있는 실정이다. 천연가스 연료를 이용하는 MW급 발전용 대형 왕복엔진의 경우 연료공급시스템의 고도화 개발이 필요한데 그 중에서도 천연가스 분사기의 개발은 실질적인 천연가스 연료 이용을 위한 핵심이다. 본 연구에서는 천연가스 분사기를 상부에 위치한 솔레노이드의 전자기력에 의해 구동되고 하부의 밸브 바디부 전기자와 이동판이 상하로 움직이는 구조의 분사밸브 형태로 고안 및 설계하였으며 이 시작품의 동특성을 엔진 흡기 모사 조건에서 실험하였다. 지난 연구에서는 전기자의 변위와 지름 및 솔레노이드 코어 지름을 변경해 가면서 실험을 수행하였으며, 그 후속으로 솔레노이드 코어의 금속 재질 변경과 메인 하우징의 입구 크기 및 공급 압력에 따른 분사밸브의 동특성을 살펴보았다. Natural gas fuel has known to be very promising in terms of abundancy and economic value. Therefore it is widely treated as research topics in a variety field of production, storage and utilization. Natural gas has become one of the major sources for the power generation by using internal combustion engines(ICE). Development of natural gas fuel injection device should be preceded to realize a reliable natural gas fuel supply system for a MW class power generation reciprocating ICE. In this research, an injection valve which consists of solenoid and body part with a moving plate was designed and its dynamic performance was experimented in the engine-like environment. Displacement length and diameter of an armature and diameter of a solenoid coil were tested at former study. In this research the effect of materials of solenoid core, size of main housing inlet and supply gas pressure are examined.
20대 여성과 중년 여성의 규칙적인 운동여부가 지각된 운동방해요인에 미치는 영향
김용래(Kim Yong-Rae),박순희(Park Sun-Hee),유영준(Yoo Young-June) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.3
The purpose of this study is to provide basic data for making mediation programs about enhancing women’s physical activity. To this end we found out the effects of regular exercise and women’s age on sub-factors of perceived exercise barrier factors. We surveyed 289 adult women on exercise barrier factors and categorized the results into age and regular exercise. Then, conducted two-way ANOVA to find out the effects of women’s age and regular exercise on sub-factors of exercise barrier factors. As a result, we came up with the following. First, there was a significant difference among social and cultural barrier factors(free time, partner, costs, absence of leader) that are perceived whether the participants do exercise or not. Second, all elements in sub-factors of exercise barrier factors depending on the age group had statistical significance difference except disease(a sub-factor of physical barrier factors) and wheather(a environmental and geographical barrier factor. Third, the age and whether adult women exercise or not interact with all sub-factors except injury, hypertrophy, unnecessariness, fear, physical barrier factors, and air pollution, environmental and geographical barrier factor. From our study, barrier in exercise are different depending on the age and whether they exercise or not. Therefore when making mediation programs about enhancing physical activity, our results should be considered.
고고도 무인기용 수소 엔진의 시동성 및 공회전 연소 특성
김용래(Yong-Rae Kim),최영(Young Choi),이장희(Janghee Lee) 한국가스학회 2015 한국가스학회지 Vol.19 No.6
최근 고고도 장기체공 무인기의 개발이 활발하게 진행되고 있는 가운데, 중량당 에너지 밀도가 높아서 왕복동 엔진의 연료로서 적합한 수소 연료를 적용하는 것이 경제성과 기술성 측면에서 유리한 것으로 검토되었다. 본 연구에서는 2.4리터급 왕복동 가솔린엔진을 수소엔진으로 개조하기 위하여 수소연료를 공급하기 위한 실험장치를 구축하고 수소연료 공급이 가능한 인젝터를 장착하였으며 범용 엔진제어기를 이용하여 엔진을 구동시킴으로써 시동 및 공회전 시의 연소 특성을 파악하였다. 안전하게 엔진 시동성을 확보하였고 공회전 상태를 유지할 수 있는 조건을 탐색하였다. 또한 공회전 상태에서 공연비와 점화 타이밍을 변경해보면서 연소 안정성을 비롯한 기본적인 연소 특성을 살펴봄으로써 향후 수소엔진을 활용한 무인기의 동력원을 개발하기 위한 기초를 마련하였다. Hydrogen features highest energy density per mass and is expected to be desirable as a fuel of HALE(High altitude long endurance) UAV(Unmanned aerial vehicle). A reciprocating internal combustion engine is known to be a reliable and economic power source for this kind of UAV. Therefore, the combination of hydrogen and engine is worth of doing research. Test bench with 2.4L Spark-Ignited engine was prepared for the experiment in which start and combustion characteristics at idle condition were examined in this study. Stable hydrogen supply system and a universal ECU(Engine control unit) were also utilized for the test engine. Equivalence ratio and spark timings at idle operation were investigated and compared to the data of gasoline engine. The results will be a starting point for full-scale research of hydrogen engine for HALE UAV.
K-리그 구단의 통합적 마케팅 커뮤니케이션(IMC)활동과 이미지, 고개만족, 충성도와의 관계
김용래(Kim, Yong-Rae),이용수(Lee, Young-Soo) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.5
This study was intended to test the causal relationship between integrated marketing communication(IMC) of the K-League Club, and its image, K-League image, soccer brand image and audience customer satisfaction and loyalty. For this purpose, the questionnaire research was conducted for 400 spectators visting the home games of FC Seoul, Seongnam Ilhwa, and Suwon Samsung. 387 questionnaires were used for actual analysis. For statistical analysis, descriptive statistical analysis, exploratory factor analysis, correlation analysis and reliability analysis were conducted with the use of SPSS 18.0. Confirmatory factor analysis and structural equation modeling analysis were conducted with the use of AMOS 18.0. As a result, the following findings were obtained: First, the IMC activity of the K-league club had a positive effect on the club image. Second, it was found that the IMC activity of the K-league club did not have a positive effect on the image of the K-league. Third, it was found that the IMC activity of the K-league club did not have a positive effect on the image of the soccer brand. Fourth, it was found that the club image had a positive effect on customer satisfaction. Fifth, it was found that the image of the K-league had a positive effect on customer satisfaction. Sixth, it was found that the soccer brand image had a positive effect on the spectating customer satisfaction. Seventh, it was found that customer satisfaction had a positive effective effect on loyalty.