On the Experimental Techniques for Viscosity and Elasticity Determination of the Human Red Blood Cell

Cheong, Gyeong Rak 전북대학교 공업기술연구소 1983 工學硏究 Vol.14 No.-

암연구의 한 분야는 암세포막의 기능을 연구하는 것이다. 점도, 탄성과 같이 세포막의 물리적 성딜을 측정하여 암세포와 정상세포의 물리적 성질을 비교하고 이들 관계에서 암질환에 걸려 있는 세포막의 기능을 측정할 수 있다. 세포막의 물리적 성질을 연구하기 위하여 다음과 같이 구성되어 있는 측정장치를 설계하였다. 1. 감압장치(Negative Pressure system) 2. 마이크로 피펫트 조절장치(Micropipette manipulator) 3. 현미경(Nikon microscope) 4. 마이크로 피펫트용 도구(Micropipette Puller) 이들 장치를 이용하여 물리적 성질인 탄성과 점도를 측정 계산할 수 있다. 정상세포의 탄성계수는 8.2X10^-4dynes/cm이고 이것은 독립변수이다. 계산한 탄성치에서 두 가지 점도를 구하였다. 하나는 변형기에서 점도의 범위는 0.5X10^-4~4.0X10^-4dynes-ses/cm이고 또 하나는 회복기의 점도가0.5X10^-4dynes-ses/cm이다. 빠른 변형점도와 변형도와의 관계에서 점도는 전단변형에 의존성이라는 것을 알 수 있다.

골프 스폰서십에 의한 기업이미지, 스폰서 기업에 대한 태도, 브랜드인지도 및 제품 구매의도 간의 인과관계

최청락(Cheong Rak Choi),허철무(Chul Moo Heo) 한국사회체육학회 2013 한국사회체육학회지 Vol.0 No.51

The purpose of this study was to investigate the relationship among corporate image, attitude toward sponsor enterprise, brand awareness and purchase intention of golf consumer. The sample of this study were 296 golf consumer. Factor analysis, t-test, correlation analysis, reliability analysis and structural equation model analysis used by SPSS 15.0 and IBM AMOS version 20 program. The findings of this study were as follows. First, male group in golf consumer showed high scores on the image of corporate social responsibility. Second, corporate image of sponsor enterprise had positive influence on attitude toward sponsor enterprise and brand awareness. Third, attitude toward sponsor enterprise had not influence significantly on purchase intention.

Economic injury levels and recommendation for pest control of Tetranychus kanzawai Kishda(Acarina, Tetranychidae) in Rubus coreanus Miquel

Ju Rak Lim,Ju Kim,Seong Soo Cheong,Dong chil Choi,Chang yeon Hwang 한국응용곤충학회 2009 한국응용곤충학회 학술대회논문집 Vol.2009 No.10

This study was conducted for establishment of Economic injury levels(EILs) of the tea red spider mite, Tetranychus kanzawai on Rubus coreanus. T. kanzawai was innoculated on May 7 in differently 0, 5, 10, 20 and 40 adults per plant. And pesticide was treated in late April, early May, middle May and late May, respectively. After inoculated of T. kanzawai, the density was increased until the mid-June and decreased gradually in all plots. And higher inoculation density were increased higher than lower inoculation density. Growth variables were not different among experimental plots except number of fruit set, but the number of fruit set and yields were decreased with increasing initial mite density. Densities of T. kanzawai on treated time of pesticide was lower in later treatment time than early treatment time. The late April treatments were not effective of pesticide in harvesting season. The rates of yield loss increased with increasing initial mite density. The relationship between initial T. kanzawai densities and yield losses was well described by a linear regression, Y = 0.6545X + 3.0425, R2=0.9313. Based on the relationship, the number of adults per plant which can cause 5% loss of yield was estimated to be approximately 3.0. And EILs was estimated to be approximately 8.3 adults/leaf in mid-May.

골프연습장 이용자들에 대한 마케팅믹스 전략이 지각된 품질과 고객만족, 재구매의도에 미치는 효과

최청락(Cheong Rak Choi),허철무(Chul Moo Heo) 한국사회체육학회 2012 한국사회체육학회지 Vol.0 No.48

The purpose of this study was to examined the effect of marketing mix on perceived service quality, customer satisfaction and repurchase intention to participants of golf practice range. Total of 322 participants were sampled from the customer for the golf practice range by convenience sampling method. The resulting data were processed by exploratory-confirmatory factor analysis, correlation analysis, reliability analysis and structure model analysis using SPSS 15.0 and AMOS 7.0 program. The obtained findings were as follows: First, product and price among marketing mix strategy had positive influence on perceived service quality. second, product and price among marketing mix strategy had positive influence on customer satisfaction, third, perceived service quality had positive influence on customer satisfaction. Fourth, customer satisfaction had positive influence on repurchase intention.

자아-브랜드이미지 일치성이 스포츠용품 소비자의 브랜드사랑과 브랜드충성도에 미치는 영향

최청락(Chio, Cheong-Rak),서희정(Seo, Hee-Jung) 한국체육과학회 2018 한국체육과학회지 Vol.27 No.2

This study attempts to explain the relationship of variables that maintains and strengthens brand loyalty of consumer sport products with high participation. The key element to maintaining and strengthening that we focused on was brand loving. The congruity of the consumer"s self-brand mage was selected as the variable for the main cause of brand loving. This study attempts to explain the relationship between the quality recognition of the brand, brand loving and brand loyalty. The study was conducted by surveying 300 college students interested in sports products and sports club members. Convenient sampling method was used and the survey was a self-assessment. SPSSWIN 19.0 and AMOS 19.0 were utilized for data processing. Frequency analysis, crosstabulation analysis, t-test, correlation analysis, and regression analysis were used for statistics. The results of the study are the following. First, gender difference test resulted in meaningful statistical differentiation in all aspects except for the ideal self image congruity. Second, out of the subset variables of self image congruity, the effectual self image congruity and social self image congruity had meaningful impact on brand quality. Effectual, social, and ideal self image congruity had meaningful impact on brand loving. Also, brand quality meaningfully affected brand loving. Through the result of this study, we discussed the expected scholar and social effects and applications.

프로스포츠 이벤트-자아 일치성이 충성도에 미치는 영향

최청락(Choi Cheong-Rak),서희정(Seo Hee-Jung) 한국체육과학회 2010 한국체육과학회지 Vol.19 No.2

That is the purpose of this study is to analyze the effects of professional sport -event congruity of spectators on spectators' loyalty after attending and viewing professional sports. Target of this study is college students who have experiences of attending and viewing professional sports during the first semester in 2008. Sample group was extracted utilizing convenient sampling method and questionnaire was prepared through self-administration. Out of a total 241 answer sheets, 203 answers were used as data processing excluding 38 answers who did not attend and view professional sport. The data was analyzed in frequency analysis, factor analysis, Cronbach's a test, and simple & multiple regression analysis using SPSSWIN Ver. 14.0, this study is to find out methods for spectators of professional sports to come back to stadiums again. The contents of results from the study are as the follows: First, professional sport -event congruity showed a meaningful effect on satisfaction of viewing. Second, professional sport -event congruity did not show a meaningful effect on satisfaction of viewing. Third, professional sport -event congruity showed no meaningful effect on loyalty. Fourth, viewing devotion showed a meaningful effect on satisfaction of viewing. Fifth, viewing devotion showed a meaningful; effect on loyalty. Sixth, satisfaction of viewing showed a meaningful effect on loyalty.

태권도 수련생들의 여가만족도와 생활만족도가 행복감에 미치는 영향

최청락(Choi, Cheong-Rak),진승태(Chin, Seung-Tae) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.6

The purpose of this study was to analyze the effect of leisure and life satisfaction on euphoria for Taekwondo students. The measurement method was based on a questionnaire through convenience sampling method, A total of 500 questionnaires were distributed to several Taekwondo studios located in Seoul and Gyeonggi-do and 422 copies were used as final subjects of this study. After processing the data T-test, analysis of frequency, correlation analysis, regression analysis using the SPSSWIN PASW 18.0 the result was as follow. First, Leisure (Physical and environmental) satisfaction has a significant influence on Life style satisfaction. Second, Leisure (Physical, psychological and environmental) satisfaction has a significant influence on euphoria. Third, Life style satisfaction has a significant influence on euphoria. Fourth, Among leisure satisfaction, only environmental satisfaction was significantly different between gender.

인간적혈구의 점도와 탄성측정에 관한 실험적 연구

정경락(Gyeong rak Cheong) 전북대학교 공학연구원 (구 전북대학교 공업기술연구소) 1983 工學硏究 Vol.14 No.-

수상스키장의 서비스품질지각이 고객만족, 고객태도 및 고객충성도에 미치는 영향

최청락(Choi, Cheong-Rak),신명수(Shin, Myung-Soo) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.6

The purpose of this study was to find out the effect of water ski firms’ service quality on customer satisfaction, customer attitude and customer loyalty. For this purpose, the study collected questionnaires of 268 customers of 8 water ski firms located in Gyeonggi Province by convenient sampling method, excluded inappropriate data, and processed the final data that were analyzable using PASW WIN 18.0 and AMOS 18.0. The results are as follows; First, service quality affected customer satisfaction significantly. Second, service quality had a significant effect on customer attitude. Third, service quality had a significant effect on customer loyalty. Fourth, customer’s satisfaction had a significant effect on customer attitude. Fifthly, custome satisfaction did not have a significant effect on customer loyalty. Sixth, customer attitude had a significant effect on customer loyalty.

프로스포츠 관중의 지지를 받는 타이틀스폰서의 브랜드자산 효과에 따른 구단의 역할분석

최청락(Choi, Cheong-Rak),서희정(Seo, Hee-Jung) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.6

The purpose of this study is to analyze a sports club’s role consequent on professional sports spectators, and a title sponsor’s brand equity effect. To this end, this study conducted a survey after preparing survey questions through literature research, in-depth interviews and interviews with experts. This study composed the survey questions with brand personality, brand attitude, brand image, brand satisfaction and brand loyalty. This study set the spectators supporting Hyundai Oilbank in the 2013 K-League as its survey target, adopted purposive sampling as a sampling method, and got the surveyed to prepare the questionnaire using the self-administration method, and did sampling of 523 copies of questionnaires in total. As for data processing, this study made a frequency analysis, cross analysis, correlation analysis and structural equation modeling analysis. The study results are as follows: First, the sub-variables of brand personality were found to partially have a significant influence on brand attitude, brand image, brand satisfaction and brand loyalty. Second, brand attitude was found to have a significant influence on brand image and brand satisfaction. Third, brand image was found to have a significant influence on brand satisfaction and brand loyalty. Fourth, brand satisfaction was found to have a significant influence on brand loyalty.