• Asia Pacific Journal of Business Review
• /
• 제6권1호
• /
• pp.61-73
• /
• 2021

This study attempted to examine the structural relationship between the main factors that determine the intention to continue participation in yacht activities. Specifically, motivation for yacht activities was divided into achievement motivation, social motivation, escapist motivation, conspicuous motivation, and hedonic motivation, and the effect of each motivation on the satisfaction and continuous intention of yacht activities was examined. This study surveyed 338 ordinary people who were interested in yacht activities or had experience in yacht activities, and verified the main hypothesis through regression analysis. The main analysis results of this study are as follows. First, it was found that achievement motivation did not affect satisfaction. Second, it was found that social motivation had a positive (+) effect on satisfaction. Third, it was found that escapist motivation had a positive (+) effect on satisfaction. Fourth, it was found that the conspicuous motivation had a positive (+) effect on satisfaction. Fifth, it was found that hedonic motivation had a positive (+) effect on satisfaction. Sixth, it was found that the achievement motivation had a positive (+) effect on continuous intention. Seventh, it was found that social motivation did not affect continuous intention. Eighth, it was found that escapist motivation had a positive (+) effect on continuous intention. Ninth, it was found that the conspicuous motivation did not affect continuous intention. Tenth, it was found that the hedonic motivation had a positive (+) effect on continuous intention. Eleven, satisfaction was found to have a positive (+) effect on continuous intention. This study derived academic and practical implications based on the analysis results and proposed future research directions.

• Journal of Crop Science and Biotechnology
• /
• 제11권2호
• /
• pp.151-156
• /
• 2008

The objective of this study is to identify main-effect QTLs, epistatic QTLs, and the interactions between QTL and the environment associated with grain appearances of brown rice. A genetic linkage map was created with 172 DNA markers spanning 12 rice chromosomes based on 120 DH lines, which derived from a cross between 'Samgang'(Tongil) and 'Nagdong'(Japonica). One thousandgrain weight, length, width, length-to-width ratio, and thickness were evaluated regarding the DH population. Twenty independent QTLs and fourteen epistatic QTLs were identified in using CIM by two programs, known as WinQTLcart2.5 and QTLMAPPER. The QTLs of qgw9.1 in an interval of RM434-RM242 on chromosome 9 and qgw11.1 at a peak marker of RM287 on chromosome 11 for one thousand-grain weight, qgwi2.2 for grain width at a peak marker of RM450, qlw2.1 for length-to-width ratio flanked by RM492 and RM324, and qgt2.1 for thickness flanked by 2009 and RM492 on chromosome 2 were detected over two years, which can be considered as stable QTLs. The epistatic effect might be an important component for genetic basis of one thousand-grain weight and width. The main-effect QTLs of grain width and length to width ratio were easily influenced by environments.

• Structural Engineering and Mechanics
• /
• 제58권6호
• /
• pp.967-988
• /
• 2016

Due to the significant aerodynamic interference from sub-towers and surrounding tall buildings, the wind loads and dynamic responses on main tower of three-tower connected tall building typically change especially compared with those on the isolated single tall building. This paper addresses the wind load effects and equivalent static wind loads (ESWLs) of three-tower connected tall building based on measured synchronous surface pressures in a wind tunnel. The variations of the global shape coefficients and extremum wind loads of main tower structure with or without interference effect under different wind directions are studied, pointing out the deficiency of the traditional wind loads based on the load codes for the three-tower connected tall building. The ESWLs calculation method based on elastic restoring forces is proposed, which completely contains the quasi-static item, inertia item and the coupled effect between them. Then the wind-induced displacement and acceleration responses for main tower of three-tower connected tall building in the horizontal and torsional directions are investigated, subsequently the structural basal and floor ESWLs under different return periods, wind directions and damping ratios are studied. Finally, the action mechanism of interference effect on structural wind effects is investigated. Main conclusions can provide a sientific basis for the wind-resistant design of such three-tower connected tall building.

• 한국전산유체공학회:학술대회논문집
• /
• 한국전산유체공학회 2005년도 춘계 학술대회논문집
• /
• pp.57-64
• /
• 2005

Aerodynamic characteristics of three-dimensional wings in ground effect for Aero-levitation Electric Vehicle(AEV) are numerically investigated for various fairing shapes at the junctions of 3D Wings. Numerical results show that a sizeable three-dimensional comer flow separation occurs with formation of an arch vortex at the junction of main and vertical wings, and also that this is predicted the main cause of the high lift-to-drag(L/D) reduction rate of the main wing. To avoid the comer flow separation, the main idea of this study is to reduce the cross section gradient of the comer flow tube near the trailing edge for various fairing shapes. Improvements on L/D ratios of the wings are pursued by breaking the coherence of superimposed adverse pressure gradients at the wing junction when the cross section gradient is changed slowly at the trailing edge.

• 한국의류학회지
• /
• 제21권4호
• /
• pp.740-749
• /
• 1997

The purpose of this study was to identify the effects of perceptual self-concept and evaluative self-concept (self-esteem) on the clothing behavior of college students. The subjects of this study were college students who were attended in Semyung University. For statistical analysis, factor analysis, 1-test, Pearson's correlation and two-way ANOVA were used. The results of this study were as follows: 1. Male students showed higher evaluative self.concept than female students. 2. Shopping motivation was varied according to self-concept especially in male students. And in fashion pursuit factor, sex and self-concept had the main effect and concurrently there was interaction. 3. Clothing interest was varied according to self-concept. About fashion interest, sex had the main effect and sex and self-concept showed the interaction. 4. Clothing satisfaction was changed according to self-concept. Self-concept showed the main effect in fashionable factor and practical factor, and sex and self-concept had interaction in fashionable factor.

• 한국자동차공학회논문집
• /
• 제15권4호
• /
• pp.76-82
• /
• 2007

This paper described the effect of the multiple injections on the stability of combustion and emission characteristics in a direct injection diesel engine at various operating conditions. In order to investigate the influence of multiple injections in a diesel engine, the fuel injection timing was varied one main injection and two pilot injections at various conditions. The experimental apparatus consisted of DI diesel engine with four cylinders, EC dynamometer, multi-stage injection control system, and exhaust emissions analyzer. The combustion and emission characteristics were analyzed for the main, pilot-main injection, pilot-pilot-main injection strategies. It is revealed that the combustion pressure was smoothly near the top dead center and the coefficient of variations is reduced due to the effect of pilot injection. Also, $NO_x$ emissions are dramatically decreased with pilot injection because the decrease of rate of heat release. However, the soot is increased at early pilot injection and main injection.

• 대한전기학회논문지:전력기술부문A
• /
• 제54권7호
• /
• pp.366-374
• /
• 2005

The purpose of this study is to find out main factors affecting public enterprise's environment , which improves the performance of public enterprise. In detail, under the premises of keeping publicity in Korea Electricity Industry, the main target of this study is to seek after factors enhancing entrepreneurship and deals with publicity which is related with entrepreneurship. Questionnaires are distributed to the employee of public enterprise, public servants, and civil corps. A total of 553 copies are collected. The main contents of questionnaires are related with the effect of publicity and entrepreneurship by government control, competitive environment and shareholding structure in Korea Electricity Power Corporation(KEPCO). The results of this survey are as follows : First government control is negatively related to the entrepreneurship while it is positively related to the Publicity. Second, this suey shows that competitive environment has a Positive influence on promoting both publicity and entrepreneurship. Third this survey in connection with shareholding structure indicates that present structure in KEPCO has a positive effect on publicity but negative effect on entrepreneurship. According to this empirical results, it is verified that the main issues on the performance of KEPCO ue related with the level of government control and competitive environment in its industry.

• 한국작물학회지
• /
• 제54권2호
• /
• pp.165-171
• /
• 2009

The objective of this study was to characterize the main-effect QTLs, epistatic QTLs and QTL-by-environment interactions (QE), which are involved in the control of protein content. A population of 120 doubled haploid (DH) lines derived from a cross between 'Samgang' and 'Nagdong', was planted and determined for protein content over three years. Based on the population and a genetic linkage map of 172 markers, QTL analysis was conducted by WinQTLcart 2.5 and QTLMAPPER. Three main-effect QTLs affecting protein content of brown rice were detected from 2004 to 2006 on chromosomes 1 and 11. The qPC11.2 was repeatedly detected across two years. Seven pairs of epistatic loci were identified on eight chromosomes for protein content and collectively explained 39.15% of phenotype variation. These results suggest that epistatic effects might be an even more important component of the genetic basis for protein content and that the segregation of the DH lines for protein content could be largely explained by a few main-effect QTLs and many epistatic loci.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
• /
• pp.337-338
• /
• 2006

The purpose of this study is to find out main factors affecting public enterprise's environment, which improves the performance of public enterprise. In detail, under the premises of keeping publicity in Korea Electricity Industry, the main target of this study is to seek after factors enhancing entrepreneurship and deals with publicity which is related with entrepreneurship. Questionnaires are distributed to the employee of public enterprise, public servants, and civil corps. A total of 553 copies are collected. The main contents of questionnaires are related with the effect of publicity and entrepreneurship by government control, competitive environment, and shareholding structure in Korea Electricity Power Corporation(KEPCO). The results of this survey are as follows : First, government control is negatively related to the entrepreneurship while it is positively related to the publicity. Second, this survey shows that competitive environment has a positive influence on promoting both publicity and entrepreneurship. Third, this survey in connection with shareholding structure indicates that present structure in KEPCO has a positive effect on publicity but negative effect on entrepreneurship. According to this empirical results, it is verified that the main issues on the performance of KEPCO are related with the level of government control and competitive environment in its industry.

• 한국염색가공학회지
• /
• 제11권2호
• /
• pp.64-74
• /
• 1999

The driving characteristics of the 1 tube 2 chamber bent silkworm type dyeing machine are reported. This dyeing machine is a newly developed energy saving machine. In this study, the driving characteristics of the 1 tube 2 chamber bent silkworm type dyeing machine are examined. Specially the relationship between main body pressure and the electric current of the blower motor, the relationship between main body pressure and the air pressure of the blower nozzle, the effect of the air pressure of the blower on the running speed of the fabric, and the effect of main body temperature were discussed experimentally. Through the experimental data, the following results were obtained. 1. Blower motor electric current and blower nozzle air pressure increased as main body pressure increased due to the temperature increase of the main body. 2. The running speed of the fabric increased as blower nozzle air pressure increased. The difference in running speed between winch reel driving and no winch reel driving at a blower frequency of 60Hz was higher than that of 70Hz. 3. The electric current of the blower rioter and blower nozzle air pressure increased rapidly at the initial state. As the experimental time passed, the main body pressure increased slowly. as the main body temperature increased.