• Journal of the Korean Society for Aviation and Aeronautics
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• v.26 no.1
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• pp.1-9
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• 2018

Ground effect includes a reduction of induced drag, increase of lift, and nose-down moment during landing. These phenomena, occurring late in the landing maneuver, are considered to be of little significance because they tend to counteract and/or compensate in this respect. Even though it is unlikely to affect any flare profile variations appreciably, some pilots have reversed perception about such phenomenon and overestimate during landing. It is becoming a negative factor and is making an adverse effect on landing maneuver. This study examines the perception of ground effect of large aircraft pilots, reviews literature regarding ground effect, and makes suggestions that pilots can correctly recognize and respond to the effect during landing flare maneuvers.

• Journal of Physiology & Pathology in Korean Medicine
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• v.24 no.5
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• pp.877-882
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• 2010

This study was designed to investigate job stress, job satisfaction and related factors of oriental medical doctors. The survey used administered questionnaire, was conducted from June 10 to June 30, 2010 in Jeonbuk province. Questionnaire was composed of general characteristics, socioeconomic status perception, job stress scale and job satisfaction scale. Job stress was related to sex, age, marriage, working form, working time, clinical career. Job satisfaction was related to age. Working time, working form and self-status perception influenced job stress. Self-status perception influenced job satisfaction. Especially, it was supposed that working time was most important factor to job stress.

• Korean Institute of Interior Design Journal
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• v.16 no.2 s.61
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• pp.339-346
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• 2007

This thesis has purpose of explaining that light is not only appreciated but also physically percepted in contemporary space design and examining effects of space experience through the physical perception. In keeping with such developments, light has been perceived as the object of another architectural tool in modern space design and has provided men with new experience by providing space image and function different from previous ones. With the expansion of the area of light, light has changed a space that is not a simple architectural factor into the essential concept that gives the architectural space image ! by combining it with architectural space, structure, form and materials throughout the whole process from the beginning to the completion. Through phenomenological approach, light is percepted and experienced by body movement, intervention of senses and memories, and passing of time. The percepted and experienced light brings increase of mutual understanding in space, activation and continuance of user's sensation, recreational experience by event occurrence and space experience effect thorough information from media.

• Journal of the Korean Society of Food Culture
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• v.33 no.4
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• pp.345-353
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• 2018

This study examined how the consumers' perception of GM food affects their purchasing behavior. In addition, this study investigated how the amount of knowledge a consumer has regarding GM food affects their perception of this type of food. The quantitative research method was used to collect data. The data from a self-administered survey, which was conducted in South Korea, was analyzed using descriptive analysis, ANOVA, factor analysis, and multiple regression analysis methods. The results of the survey indicate that most respondents may have unknowingly purchased GM food. Further, the respondents reported that they likely had known about or had heard of GM food. In addition, the survey indicated that the amount of knowledge possessed by the respondents regarding GM food greatly affected their perceptions of this type of food. These findings will contribute to the current GM food market by providing the food market with additional information relating to the consumers' perceptions of GM food.

• Transactions of the Korean Society of Automotive Engineers
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• v.9 no.3
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• pp.121-130
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• 2001

This paper addresses a method for evaluating perceived velocities of the graphic module in a driving simulator. The major two graphic factors associated with perceived velocities are analyzed: they are the lateral distance between a virtual driver and an array of environmental objects and the textural density of these objects. A graphical representation of a vehicle and its surrounding environment are constructed by employing a three-dimensional tool, Pro/ENGINEER and a virtual environment, dVISE. Using the developed virtual driving environment, experiments have been carried out to formulate the relationship between velocity perception and each factor. Based on the experimental results, nonlinear regression equations are derived to show how the perceived velocities are dependent upon distance/density.

• Korea Journal of Hospital Management
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• v.17 no.4
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• pp.116-132
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• 2012

The purpose of this study is to discover the influence of customer's awareness toward corporate social responsibility(CSR) activities to service quality perception of the hospital. The survey was conducted on 211 patients at the general hospital in Seoul from April 2 to 30 in 2012. For the statistical analysis of data, ttest, ANOVA, and hierarchical multiple regression analysis were implemented. The results of the study were as follows. First, The personal tendency toward CSR was different by social groups. The elderly showed more tendency toward CSR. Second, there was a statistical significant relationship between the personal tendency toward CSR and the number of perceived CSR activities. Third, the effects of CSR activities were different from the perception of service quality. The awareness of volunteering social activities turned out to be negative factor of service quality perception.

• Journal of the Korean Institute of Telematics and Electronics C
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• v.34C no.3
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• pp.37-47
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• 1997

Human observers perceive a contour where no line or edge is given (subject contour), such as the border between gratings of thin lines offset by half a cycle. Subjective contours occur in a wide variety of circumstances in nature. A common factor in all such figures in the perception of a surface(contour) occuluding part of a background, i.e. subject contours are always accompanied by subject surfaces. Some examples about these kinds of figures are given by kanizsa trangle or square. Ph;ysiological observations are reported in which the perceptual phenomenon that some simple examples of subject contours are perceived as images (gigures; contours) through physiological experiments was investgated. In this paper, we proposed a neural network extracting the induce dstimuli for the perception of subject contours based on the visual mechnism. This visual mechnism is proposed by hubel & wiesel's paper.

• STI Policy Review
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• v.4 no.2
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• pp.136-158
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• 2013

This study identifies the structural determinants of the social acceptance of genetically modified (GM) foods across European countries. Toward this end, we suggest an integrated theoretical model to explain the social acceptance of GM foods by including both perception factors (perceived benefit, perceived risk, feelings, trust, and knowledge) and value factors (ethical concerns, science optimism, religiosity, and ideology). This model is then tested by analyzing survey data collected from 18,634 Europeans in 32 countries. The results indicate that first, not only perception factors but also value factors significantly contribute to explaining the acceptance of GM foods. Second, perceived benefits, perceived risk, feelings, and ethical concerns tend to be the four biggest determinants for acceptance. Third, this two-factor model could be generalized even with variation across countries. Finally, ethical concerns and scientific optimism play a moderating role between predictors and outcomes in the acceptance of GM foods.

• Journal of Families and Better Life
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• v.25 no.1 s.85
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• pp.77-85
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• 2007

This study investigates aggressive children's perceptions of their social acceptance in conjunction with peer ratings of social acceptance. The subjects were 520 children in the fifth through sixth grades. Children completed questionnaires that assessed self-perceptions of social acceptance. In addition, they completed peer nominations that assessed peer victimization, aggression, and peer acceptance, while their teachers rated children's externalizing problems. The results suggest that aggressive children's self-perceived social acceptance is inflated in relation to the ratings of their peers. For aggressive-rejected children, a highly positive self-perception was shown to be not a protective factor, but rather a defensive posture that places the children at added risk.

• Journal of the Korean Home Economics Association
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• v.40 no.5
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• pp.133-146
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• 2002

The purpose of this study was to verify a Structural Equation Model that constructed the causations among the leisure resources, health perception, leisure attitude, leisure satisfaction and the quality of life in the elderly. For the purpose, 208 elderly who were over sixty years old and inhabited in Seoul were given questionnaires. Questionnaires were distributed by means of a 1:1 personal interview method. A Measurement model and a structural equation model estimates by Maximum Likelihood method(ML method) utilizing LISREL 8.51 ver. The major results are summarized as follows: 1) A Goodness of fit is good of structural equation model presented in the study. 2) The higher their leisure resource is, the higher health perception is, the higher leisure attitude is the more leisure satisfaction. 3) The important valuable factor which affected the quality of life in the elderly was the leisure satisfaction. It showed powerfully if the elderly participate enjoyment, self-development and positive leisure activity, their leisure satisfaction would increase, consequently the Quality of life would be improved.