• Korean Journal of Human Ecology
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• v.4 no.1
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• pp.26-35
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• 2001

The Purpose of this study was to examine the difference among peer orientation according to socio-demographic variables and mothers' rearing behavior of early adolescents and to analyze the effect of these variables influencing peer orientation. The subjects were 399 students-sixth grade and second grade in middle school students, living in Gwangju. The major findings were as follows : 1. Peer orientation of early adolescents showed partial differences according to the socio-demographic variables and mothers' rearing behavior. Peer advice seeking showed significant difference according to child's grade, reasoning guidance, affection and active-education of mother. And extreme peer orientation was difference in the child's grade, sex. family type, reasoning guidance and over-protection of mother. 2. The order in the effective power of variables on peer orientation of early adolescents was as following. Peer advice seeking was influenced by the child's grade and affection that were explained about 21%. And extreme peer orientation was influenced by reasoning guidance. over-Protection. the child's sex, and family type that were explained about 17%. In conclusion, Mothers' rearing behavior was influenced on peer orientations. Above all children's peer orientations are need for the improvement mothers' behavior reasoning guidance. affection.

• Safety and Health at Work
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• v.11 no.3
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• pp.314-321
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• 2020

Background: Occupational accidents occur for a variety of reasons, such as unsafe behaviors of workers and insufficient safety equipment at the workplace, but there are also various economic and social factors that can impact working conditions and working environment. This study analyzed the relationship between changes in economic factors and the occurrence of occupational accidents in Korea. Methods: Multilinear regression analysis was used as the analysis model. The general to specific method was also used, which consecutively removes statistically insignificant variables from a general model that includes dependent variables and lagged variables of dependent variables. Results: The frequency of occupational accidents was found to have a statistically significant relationship to economic indicators. The monthly number of cases of occupational injury and disease and fatal occupational injuries were found to be closely related to manufacturing capacity utilization, differences in the production index in the services sector, and commencements of building construction. The increase in equipment investment indicators was found to reduce fatal occupational injuries. Conclusion: The results of this study may be used to develop occupational accident trends or leading indicators, which in turn can be used by organizations that manage and monitor occupational accidents toward taking administrative action designed to reduce occupational accidents. The results also imply that short-term and mid- to long-term economic and social changes that can impact workers, workplaces and working conditions, and workplace organizations must be taken into account if more effective government policies are to be established and implemented toward further prevention of occupational accidents.

• International Journal of Human Ecology
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• v.4 no.1
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• pp.45-54
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• 2003

The purpose of this study was primarily to examine various variables influencing consumer purchasing behavior on perceived product quality, value toward product including brand loyalty, price, consumer's willingness to pay for the product, and their expenditure patterns in Korean apparel market. Factor analysis was used to evaluate the credibility of dependent variables, and T-test was used to compare the effect of brand label, country of origin, brand effect between Korean and U.S, and jacket price and quality on consumer characteristics. Discriminated analysis was used to find the effective variables influencing the two reference group differences when they evaluated Korean and U.S. labeled and non-labeled apparel products. Multiple Regression analysis was used to examine the effects of consumer characteristics on perceived quality, perceived value, perceived price, and their willingness to buy. The results of this study also provides useful information of consumer purchasing behavior on U.S. branded apparel which may or already launched the Korean fashion merchandizing market.

• Journal of the Korean School Mathematics Society
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• v.9 no.1
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• pp.41-55
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• 2006

Although gifted students are well ready in the perspective of intelligence, in order to make their learning highly effective, it is necessary to revitalize their intellectual abilities and progress it into proactive learning behaviour It is requisite to stress on the affective variables for achieving this. This study examined and analyzed affective variables for the subject mathematics on self-concept toward mathematics, attitude, interest, mathematical anxiety, and learning habits.

• Journal of the Korean Home Economics Association
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• v.37 no.12 s.142
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• pp.29-41
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• 1999

The purpose of this study is to investigate the relationships of the social demographic variables, health variables, and family environmental variables to life satisfaction of rural olders, to identify their problems and to find good directions to enhance the welfares for the rural olds who are in poor life situations. The results are as follows : 1. The male old's satisfaction were higher than the female old's one. The life satisfaction didn't show differences according to the age or religion. But, the higher educational level, the higher life satisfaction was shown. The higher the economic status, the higher life satisfaction was shown. 2. The degree of life satisfaction had meaningful differences on the number of disease and health situation. The more disease they have, the lower life satisfaction was shown. 3. The life satisfaction of the rural old was highest when they live together with their married children than living alone. When they have spouse, the life satisfaction was high. And, as the relation with their children was close, the life satisfaction was high. So, it is thought the children have great influences to the rural old. 4. In the multiple regression analysis, It was found that physical health, the relationship with their children, perceived economic status, and unemployment of their children were effective variables in the old's life satisfaction.

• Korean Journal of Adult Nursing
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• v.21 no.1
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• pp.129-139
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• 2009

Purpose: This study was to identify the perceptions of nursing student on the clinical practice environment and related variables. Methods: The subjects of this study were 180 nursing students from a college participated in clinical practice at four regional hospitals. Data was collected with the questionnaire tool for the perceptions of clinical practice environment. Results: The students highly satisfied in the major had significantly high perception in innovation, personalization, student involvement, and clinical practice satisfaction. The students with a low level of stress and a clearly named guidance nurse were significantly high in the perceptions of task orientation, innovation, personalization, student involvement, and practice satisfaction. Clinical practice environment variables such as task orientation, innovation, individualization, personalization, student involvement, and practice satisfaction were significantly correlated with each other. In student characteristics, the main variables directly influencing the perceptions of clinical practice environment were religion, the level of stress, and the method of guidance. Conclusion: Understanding the students' perspective would be valuable for promoting a positive clinical practice environment. Developing a cooperative system between the college and educational hospitals is necessary for effective clinical practice education.

• Membrane and Water Treatment
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• v.9 no.3
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• pp.155-162
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• 2018

Process modeling with activated sludge models (ASMs) is useful for the design and operational improvement of biological nutrient removal (BNR) processes. Effective utilization of ASMs requires the influent fraction analysis (IFA) of the wastewater treatment plant (WWTP). However, this is difficult due to the time and cost involved in the design and operation steps, thereby declining the simulation reliability. Harmony Search (HS) algorithm was utilized herein to determine the relationships between composite variables and state variables of the model IWA ASM1. Influent fraction analysis was used in estimating fractions of the state variables of the WWTP influent and its application to 9 wastewater treatment processes in South Korea. The results of influent $S_s$ and $Xs+X_{BH}$, which are the most sensitive variables for design of activated sludge process, are estimated within the error ranges of 8.9-14.2% and 3.8-6.4%, respectively. Utilizing the chemical oxygen demand (COD) fraction analysis for influent wastewater, it was possible to predict the concentrations of treated organic matter and nitrogen in 9 full scale BNR processes with high accuracy. In addition, the results of daily influent fraction analysis (D-IFA) method were superior to those of the constant influent fraction analysis (C-IFA) method.

• Korean Journal of Computational Design and Engineering
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• v.18 no.5
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• pp.359-366
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• 2013

In the lower arm design process, a tolerance optimization of the variance of design variables should be preceded before manufacturing process, since it is very cost-effective compared to a strict management of tolerance of products. In this study, a design of experiment (DOE) based on response surface model (RSM) was carried out to find optimized design variables of the lower arm, which can meet a given requirement of probability constraint for the process capability index (Cpk) of the weight and maximum stress. Then, the design space was explored by using the central composite design method, in which the 2nd order Taylor expansion was applied to predict a standard deviation of the responses. The optimal solutions satisfying the probability constraint of the Cpk were found by considering both of the mean value and the standard deviation of the design variables.

• The Journal of Industrial Distribution & Business
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• v.9 no.4
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• pp.43-52
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• 2018

Purpose - The purpose of this article is to examine the effects of perceived value, satisfaction, and continued use intention of e-service Quality of taxi-booking apps. Research design, data, and methodology - The questionnaire was created to examine every relevant variables to practical and theoretical implications. The pilot survey was conducted for 15 days from April 7^th to April 21^st in 2016. Their total numbers were 354 surveys. But 330 copies were used for the analysis except 24 of them. To make a more effective analysis, several analysis tools and analysis programmes were used, such as IBM SPSS and AMOS. Results - The results are as follows. First, all variables of e-service quality except safety make influences on perceived value. Second, e-service quality except safety makes influences on satisfaction. Third, perceived value makes influence on satisfaction and on intention of continued use. Fourth, satisfaction makes influence on intention of continued use. Conclusions - First, 5 variables are very limited. more valuable variables are need to test with this model. Second, this study was conducted only in China. So there may be possible to the representatives. To use this model for better analysis and application abroad, more characteristics and strategic factors should be considered like the local culture of a particular country, attributes for different environment etc.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.32 no.11
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• pp.970-977
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• 2008

This paper deals with the dynamic characteristics of the shaft with impeller model which is the most important part in developing the resin mixing machine. Through reverse engineering, it is possible to make the shaft with impeller geometry model which is necessary vibration characteristic analysis by commercial impeller. The natural frequency analysis and structural analysis using finite element analysis software are performed on the imported commercial shaft with impeller model. The most important fundamental natural frequency of the shaft with impeller model is around 14.5 Hz, which well agrees with modal testing. The most effective design variables were extracted by ANOM(analysis of means) and pareto chart. This paper presents approximation 2nd order polynomial as design variables using RSM(response surface methodology). Generally, RSM take 2 or 3 design variables, but this method uses 5 design variables with table of mixed orthogonal array. Further more, the analyzed result of the commercial shaft with impeller is to be utilized for the structural design of resin chock mixing machine.