• Journal of Families and Better Life
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• v.15 no.3
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• pp.45-58
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• 1997

The purpose of this study was to investigate the relationship between the maternal child rearing behaviors and home environmental variables related with children's self-esteem in urban and rural community. Subjects were 435 boys and girls enrolled in grade 4, 5, 6 and their mothers from five public elementary schools in Chonan city and Naju city. The instruments for the study were coopersmith's Self Esteem Inventory Korean Maternal Behavior Inventory and questionnaire on home environmental variables. The data were analyzed by Pearson's one-way ANOVA t-test and Duncan post hoc test. The major findings were as follows: 1. Children's self esteem and 'Affection' and 'Achievement' of maternal child rearing behaviors were a positive correlation. 2. Children's self esteem of urban community was higher than that of rural community. Maternal child rearing behaviors of urban community was 'Achievement' of maternal child rearing behaviors were a positive correlation. 2. Children's self e teem of urban community was higher than that of rural community. Maternal child rearing behaviors of urban community was 'Active Involvement' and that of rural community were 'Authoritaran Control', 'Overprotection' and 'Achievement' 3. There were no differences in children's self esteem with family size. 4. There were significant differences in children's self esteem with parent's educational leveland monthly family income; the higher parent's educational level and the more monthly family income the higher children's self-esteem. 5. There were also significant differences in maternal child rearing behaviors 5. There were also significant differences in maternal child rearing behaviors with 'Achievement' by parent's age monthly family income and family size in 'Reasoning Guidance' and 'Active Involvement' by parent's educational level. in 'Authoritarian Control' and 'Overprotection' by monthly family income and in 'Reasoning Guidance' and 'Authoritarian Control' by family size.

• 제어로봇시스템학회:학술대회논문집
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• 1993.10b
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• pp.132-137
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• 1993

In this paper, a fish drying process control system is proposed, which predicts the proper change with time in weight of the material fish and the drying conditions in advance, based on the performance of skilled worker. In order to implement a human expertise into an automated fish drying process control system, an experimental analysis is made and a model for the process is built. The proposed system divided into two procedures: The procedure before drying and the one during drying. The procedure before drying is for the prediction of necessary drying time. To estimate the necessary drying time, first, the proper change in weight for the product is obtained by using fuzzy reasoning. The condition part of the production rule consists of the factors of fish body and the expected degree of dryness. Kext, the necessary drying time is obtained by regression models. The variables employed in the models are the factors, inferred change in weight and drying conditions. The model for the procedure during drying is also proposed for more accurate estimation, which is described by a system of linear-differential equations.

• Journal of the Korean Home Economics Association
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• v.42 no.9
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• pp.53-66
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• 2004

The purpose of this study was to identify how characteristics of young children (sex, age, temperament), mothers (employed or unemployed, intimacy between mother and child, parenting attitudes), and home environment (pet, TV/Video viewing) relate to young children's empathy and to examine the relative effects of then variables on young children's empathy. The subjects for this study were 300 3-, 4-, and 5-year-olds selected from kindergartens and day-care centers in Busan. Data were analyzed via t-test, correlation, and multiple regression. Results showed that girls had higher empathy score than boys. Young children's empathy was positively correlated with the sociability of young child's temperament, intimacy between mother and young child, reasoning guidance, affect, achievement of parenting attitudes, and parental intervention toward young child after TV/video viewing. However, young children's empathy was correlated negatively with authoritarian control of parenting attitudes. Among then variables, young children's sex was the most significant variable.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.7
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• pp.139-147
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• 2020

This paper aims to explore the relationship between the quality of the audit and the level of stock return co-movement in the context of the Vietnamese emerging market. The empirical study is designed based on the quatitative method and deductive approach. The panel dataset includes 256 listed firms from different industries,with 1115 firm-year observations on Ho Chi Minh City Stock Exchange for the period from 2014 to 2018. In the research, we built the econometric regression model, using stock return synchronicity and audit quality as the dependent and independent variable, respectively. Some control variables are also added to the econometric regression models as they are well-documented in prior research to have an effect on stock price synchronicity. To improve the accuracy of the regression coefficients, beside the Ordinary Least Squares, we employ the Random Effects Model and the Fixed Effects Model for better statistical analysis of panel data set. The results show that the quality of the audit is positively correlated to stock price synchronicity. This finding suggests that stock returns of companies with higher quality of the audit are more synchronous with the market. Results for other control variables also support our reasoning for the main findings.

• Journal of Institute of Control, Robotics and Systems
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• v.3 no.2
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• pp.204-213
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• 1997

In this paper, an application of fuzzy-neuron reasoning to the control of an activated sludge plant is presented. The activated sludge process is widely used in modern wastewater treatment plants. The operation control of the activated sludge process, however, is difficult due to the following reasons : 1)The complexity of the wastewater components, 2)the change of the wastewater influent, and 3)the adjustment errors in the control process. Because of these reasons, it is difficult to obtain mathematical model that really reflect the relationship between the variables and parameters in the process of wastewater treatment correctively and effectively. In this paper, the activated sludge process(A.S.P.) is modeled by a new fuzzy-neuron network representing nonlinear characteristics. These fuzzy-neurons have fuzzy rules with complementary membership function. Based on the constructed model, graphic simulator on X-window system as a graphic integrated environment is implemented. The efficacy of the proposed control scheme was evaluated and demonstrated by means of the field test.

• The Korean Journal of Food & Health Convergence
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• v.7 no.4
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• pp.31-41
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• 2021

This study conducted 8 weeks of foam roller & mobility, core, and weight training for 9 middle school soccer players 5 times a week for 90 minutes to determine the effect on changes in body composition, thigh circumference, basic physical strength, and functional movement. To analyze the data according to the results of this study, SPSS 25.0 statistical program was used for analysis, and the mean (M) and standard deviation (SD) were calculated to present the descriptive statistics of all dependent variables. In addition, to analyze the difference between before and after exercise, it was verified using a paired t test. The statistical significance level (α) in all reasoning statistics was set to less than 5%. As a result, there were no significant changes in body composition and thigh circumference through 8 weeks of training. However, there were significant changes in agility and muscular endurance, and the total score for functional movement changes was significantly increased, and statistically significant changes were observed in three variables. Therefore, complex training is effective in changing the physical strength and functional movement of middle school soccer players, and further research will be required for a control group and various complex exercises.

• Journal of The Korean Association For Science Education
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• v.16 no.4
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• pp.470-476
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• 1996

The purpose of this study was to investigate how sample story problems should be presented to students to promote their transfer of a comprehensive solution principle to a story problem in a different domain. The variables of interest were example-problem condition, principle learning condition, and recall condition. One hundred and ninety six university students were asked to solve analogical story problems. Contrary to expectations, there were no significant differences between the one-solved-and-one -unsolved problem format and the two-solved-problem format. Also, subjects who were asked to derive a general solution principle did not received higher scores than subjects who were provided with one and subjects who were in the control group. However, the time interval between analog learning and transfer had effect on the subjects' solution of the target problem.

• Journal of the Korean Home Economics Association
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• v.39 no.1
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• pp.205-219
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• 2001

The purpose of this study was examine what extent fathers and mothers direr in their parental satisfaction and child-rearing practices, to identify the variables which were related to the parental satisfaction and child-rearing practices, and to investigate the relationships between parental satisfaction and child-rearing practices. The subjects for this study consisted of 245 fathers and 245 mothers of kindergarten children. Descriptive analysis, Cronbach's $\alpha$, t-tests, and correlations were used for data description and analysis. Results were as follows: $\circled{1}$ Paternal child-rearing practices were somewhat differed from maternal child-rearing practices, but parental satisfaction was not differed between fathers and mothers. $\circled{2}$ Factors contributed to patern satisfaction and child-rearing practices were somewhat differed from maternal satisfaction and child-rearing practices. $\circled{3}$ For both fathers and mothers, higher parental satisfaction was positively related to more reasoning guidance, affection, goal-oriented attitude, parental involvement, consistent nile-enforcement, and less authoritarian control.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1992.10a
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• pp.182-186
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• 1992

A self tuning technique is derived for PID controllers which are widely used in industries. The tuning algorithm is based upon a fuzzy indirect reasoning method and an iterative technique. The fuzzy technique is considered to obtain ease and simplicity of tuning process. The PID gains for the first tuning action are determined by a method which is modified from the Ziegler-Nichols step response method. The first PID gains are determined to obtain a control performance so close to a design performance that the followed tuning process can be made effectively. The design parameters are given as time-domain variables which human is familiar with. The results of simulation studies show that the proped tuning method can produce an effective tuning for arbitaray design performances.

• Journal of The Korean Association For Science Education
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• v.9 no.1
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• pp.19-37
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• 1989

The purpose of this study was to investigate the development of logical thinking and scientific reasoning pattern of Korean high school students. To carry out this study subjects were selected about 2,000 Junior high school students, and about 4,100 senior high school students throughout the nation. They were identified as concrete, transitional or formal operational stage with the use of TOLT(the Test of Logical Thinking) by Tobin and Capie(1980), and TOSR(the Test of Scientific Reasoning) by W.A Farmer(1986). This study turned out that more than 76% of Junior high school students were classified as the concrete operational stage and about 44% of senior high school students were classified as the formal operational stage, while about 26% of them were still in the concrete operational level. This study showed that the main factor of the intellectual development of students is learning by the gradual advancement of their grades and especially entrance into the senior high school rather than by the physical growth. This study also showed that there are the take-off stage of the development of logical thinking between fourteen and fifteen years of their ages. Less than 25% of junior high school students were in the formal operational stages which are capable of control of variables, probabilistic, correlation and combinational logic in problem-solving situation, while 33-54% of senior high school students were in the formal operational levels. 38% of junior high school students were in the formal operational stage which is capable of proportional logic, while about 55% of senior high school students were in the formal operational stage. Less than 20% of senior high school students were classified as group of highly capable of scientific reasoning, while more than 23% of them were classified as group of poor capability. It also turned out that there are differences or no differences between male and female students of each school in problem-solving situation regarding each logic approach. These differences were proved to be fluctuating depending on the situations and their grades. The other results of this study is similar to those of other researches such as Tomlinson-Keasey 1972, Coleman 1973, Lawson 1973, Lawson and Renner 1974, Neimark 1975, Han 1982, and Kim 1989.