• Industrial Engineering and Management Systems
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• v.4 no.2
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• pp.192-197
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• 2005

Among many amplitude parameters, Kurtosis (4-th normalized moment of probability density function) is recognized to be the sensitive good parameter for machine diagnosis. Kurtosis has a value of 3.0 under normal condition and the value generally goes up as the deterioration proceeds. In this paper, simplified calculation method of kurtosis is introduced for the analysis of impact vibration with one sided affiliated impact vibration which occurs towards the progress of time. That phenomenon is often watched in the failure of such as bearings’ outer race. One sided affiliated impact vibration is approximated by one sided triangle towards the progress of time and simplified calculation method is introduced. Varying the shape of one sided triangle, various models are examined and it is proved that new index is a sensitive good index for machine failure diagnosis. Utilizing this method, the behavior of kurtosis is forecasted and analyzed while watching machine condition and correct diagnosis is executed.

• Journal of the Korean housing association
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• v.21 no.1
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• pp.31-42
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• 2010

The purpose of this study was to analyze behavioral patterns of elderly residents and to identify the characteristics of using furniture and home appliances by elderly-headed households. For this purpose, field studies that included observation and open-ended interview were conducted with 52 elderly-headed households. The major findings of this study were as follows: elderly-headed households need home appliances with lighter body, lower capacity and simple functions. Furniture for elderly people should be designed to minimize the inconvenience of using western style furniture, also the behavior patterns which are important to the elderly like taking medicine have to be considered. And it is necessary to design furniture and equipments properly to prevent accidents happened in housing. Lastly, because the elderly relies heavily on watching TV, it will be desirable to apply TV-friendly devices such as home networking and home automation. Research results will be useful information on product design to reflect characteristics of elderly and follow-up studies associated with each furniture and appliances and specific living behavior are needed.

• Journal of Korea Multimedia Society
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• v.21 no.3
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• pp.400-414
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• 2018

It is required for today's video contents to interact with a viewer in order to provide more personalized experience to viewer(s) than before. In order to do so by providing friendly experience to a viewer from video contents' systemic perspective, understanding and analyzing the situation of the viewer have to be preferentially considered. For this purpose, it is effective to analyze the situation of a viewer by understanding the state of the viewer based on the viewer' s behavior(s) in the process of watching the video contents, and classifying the behavior(s) into the viewer's emotion and state during the flow. The term 'Flow-emotion-state' presented in this study is the state of the viewer to be assumed based on the emotions that occur subsequently in relation to the target video content in a situation which the viewer of the video content is already engaged in the viewing behavior. This Flow-emotion-state of a viewer can be expected to be utilized to identify characteristics of the viewer's Flow-situation by observing and analyzing the gesture and the facial expression that serve as the input modality of the viewer to the video content.

• Korean Journal of Childcare and Education
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• v.5 no.2
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• pp.91-112
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• 2009

The purpose of this study was to analysis children's engagement behavior and teachers' linguistic behavior by type of group activity in kindergarten. The subjects were 45 children and 2 teachers of 5 years' class in 2 kindergarten. The data were collected by 16 times observation in general classrooms for 4 weeks to explore the children's engagement behavior and teachers' linguistic behavior. The results of this study are as follows: Firstly, the large group and structural activity from initiated teacher's plan. Secondly, children's watching and listening behavior was most frequently shown in academic large group activity. And children's active engagement behavior was most frequently shown in free play of peer group. Finally teachers explained and directed frequently in academic large group activity. And teacher praise and permission was frequently shown in free play of small group teacher-child interaction. Consequently, it is important to recognize the relationships between the activity type and children's engagement behavior in organized daily program for early child education.

• Journal of the Korean Home Economics Association
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• v.42 no.6
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• pp.55-72
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• 2004

Alcohol has as much effect on our lives as the different taste for foods that people have all of the world. Recently, the interest about drinking habits has increased with the rise in health problems for college students with poor health related behavior. The purpose of this study was to evaluate alcohol consumption, smoking and eating behavior of college students in the Kyungsan area. This survey was administered through questionnaires, and the subjects were 177 male and 189 female college students. The self-administered questionnaire was composed of questions concerning social-demographic factors, general characteristics, cigarette smoking, alcohol consumption and eating behavior. The data were analyzed by $\chi$$^2$-test and t-test. According to the survey results, almost of all of the survey subjects drank alcohol. The mean alcohol consumption level per day for male students (33.9${\pm}$29.7g) were significantly higher than for the female students (18.5${\pm}$16.5g), and more than 39.6% of the subjects drank alcohol 1-3 days a week. Alcohol consumption changed the students eating habits. Most students had dietary problems such as fast eating, skipping meal and spending too much money on fast food. The survey about eating behavior of the students showed the male students had more problems when compared with female students. Alcohol consumption levels and alcohol dependence showed a significant positive correlation with smoking cigarettes (r=0.386, p＜0.001). The correlation coefficient between alcohol consumption and eating behavior was negatively correlated with skipping meals (r=-0.121, p＜0.001). However, there were significant and positive correlations with overeating when students were depressed (r=0.130, p＜0.05), with eating meals when watching TV or videos (r=0.085) and with spending money on fast food(r=0.235, p＜0.235). The results indicate that health related behaviors of college students in the present study were fairly good. More attention should be given to college students and their habits of skipping meal, alcohol drinking and smoking, and the fairly good students can act as a model for correct dietary behavior so as to improve overall student health.

• Korean Journal of Human Ecology
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• v.20 no.3
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• pp.625-636
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• 2011

The purpose of this study was to investigate the effects of mass media and personal factors on attitudes towards plastic surgery and plastic surgery behavior. For this study the personal factors included concern for appearance, self-esteem, and body satisfaction. Subjects were 472 college students in Ulsan. The results showed that favorable attitudes towards plastic surgery were a little higher than the median, meaning that the respondents had a slightly positive attitude towards plastic surgery, and only 20% of the respondents had had an experience with plastic surgery. A multiple regression analysis was computed and indicated that a more positive attitudes towards plastic surgery was related to high levels of concern for appearance, more time watching TV, a higher household income, and being a female student, in terms of gender. The results of logit analysis indicated that a more positive attitude towards plastic surgery and being a female student related to a higher probability of having had plastic surgery.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2008.11a
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• pp.92-95
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• 2008

As society ages increasingly, maintaining an independent lifestyle at home becomes an important issue for older people. The elderly themselves demand an independent lifestyle despite their health status and living arrangements. The purpose of this study is to provide basic guidelines for the elderly housing through the analysis of seniors' housing behavior. The total of 438 residents take part in the questionnaire survey research through the quota sampling method grouped by age (60-64 group, 65-69 group, 70-74 group, over 75 group). The results are as follows. (1) Seniors' subjective physical and functional status is not differed one age group from the others, but it is differed by the sex. (2) Seniors spend more than three hours on watching TV. The male spend more time on information search, while the female on the house chores. (3) The older use the bedroom more than the younger. Living rooms are more frequently used among the young old and the residents live in the apartment houses. (4) More than half senior use a sofa in the living room, a table in the dining room, and a bed in the bedroom. The young old and the apartment residents use such furniture more than the other groups.

• Journal of the Korea Fashion and Costume Design Association
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• v.24 no.3
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• pp.85-96
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• 2022

The MZ Generation likes watching YouTube videos produced by senior influencers despite the big age gap. In addition, the final goal of collaborative YouTube videos between senior influencers and brands is to increase sales. Accordingly, this study examined this interesting phenomenon and aimed to provide useful insights for creating YouTube videos targeting the MZ generation. This study was divided into two parts. Study 1 explored the viewers' perceived benefits by looking at the YouTube video comments of a senior fashion influencer, and then classified the perceived benefits into informational, psychological, and hedonic benefits. Study 2 analyzed the relationships among the viewers' perceived benefits (informational, psychological, hedonic benefits), attitude toward a brand, and behavior intention. Study 2 found that only informational benefits, among the three perceived benefits, enhanced attitudes toward a brand, thereby affecting behavior intention. Based on the results of two sub-studies, this study highlights the importance of informational benefits to maximize the marketing effects employing the collaborative YouTube videos of senior influencers and brands.

• The Journal of the Korea Contents Association
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• v.13 no.12
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• pp.690-701
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• 2013

With the increasing adoption of social network services (SNS), the cultural and art industry is also embracing SNS as an important tool of marketing. Users can share various cultural experiences on SNS easily, and companies can analyze SNS to understand the users for effective marketing. Based on this background, this study analyzed users' behavior and attitude about movies according to SNS usage types. Users of SNS were surveyed and clustered into 'information seekers', 'fun seekers', and 'relationship seekers'. Next, the behavior of the users in each cluster was compared regarding information search about movies, preferred online advertisement channels, and post-watching behavior. The results showed that the SNS usage type has significant relationship with the behavior and attitude about movies. This suggests that movie industry can establish effective online marketing strategy by analyzing SNS usage of users.

• Korean Journal of Community Nutrition
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• v.26 no.2
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• pp.93-102
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• 2021

Objectives: This study was conducted to investigate the relationship between watching mukbang (eating broadcasts) and dietary and health behavior in adults who watch mukbang. Methods: The questionnaire was administered on a self-written basis through online and offline formats to 800 adults (400 men and 400 women). The contents of the survey consisted of general characteristics, mukbang viewing time per week, breakfast intake frequency, preference for menus when viewing mukbang, delivery food intake frequency per week, late meal intake frequency per week, and health behavior. The subjects were divided into three groups according to mukbang viewing time. Results: The body weight of viewers was significantly higher when mukbang viewing time was over 14 hours for both men and women. In particular, based on the BMI (body mass index), those who watched mukbang for more than 14 hours were found to be overweight. People with more than 14 hours of mukbang viewing time per week were found to prefer mostly carbohydrate-rich food and meat, while those with less than 7 hours of mukbang viewing time per week showed a higher preference for vegetables and fruits. An analysis of the frequency of breakfast eaten showed that the rate of skipping breakfast was the highest for those who watched mukbang for more than 14 hours per week, and the rate of eating breakfast daily was the highest in the case of fewer than 7 hours of viewing. In the case of high mukbang viewing time per week, the frequency of food delivery and night eating was high. When mukbang viewing time was high, the viewer's interest in health was low and the frequency of exercising too was low. Conclusions: Viewers with high mukbang viewing time showed undesirable health and eating behavior. Thus, it is believed that proper nutrition education on improving eating habits and raising the awareness of correct eating habits is necessary for such viewers.