• Journal of the Korean Home Economics Association
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• v.36 no.1
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• pp.81-98
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• 1998

The purpose of this research is to investigate the mother and teachers need assessment for preschooler consumer education and related variables and to provide a basis for the development of consumer education program. The survey of this research was conducted by means of self-administered questionnaire with 302 mothers of the preschoolers who are 4-5 years old and attend nursery and kindergarten and 221 teachers of nursery and kindergarten in Ulsan. The statistics used for data analysis are frequencies and percentage, mean and standard deviation, on way ANOVA and Scheffee-test, Person's correlation using the SPSS/PC+ program. Some conclusions from the above investigation are as follows: 1. Each level of the need for consumer education on 22 subject area perceived by mothers and teachers of preschoolers was high and relatively high. Thus consumer education program for preschooler must include all subject area. 2. The mother's need for preschooler consumer education differs significantly according to age. The teacher's need for preschooler consumer education differs significantly according to family income. But these variables take a little effect to the need of mother and teacher. So the consumer education program doesn't need to classify by socio-economic characteristics of mother and teacher. 3. The mother's need for preschooler consumer education are positively correlated to consumer knowledge and consumer skill but negatively correlated to consumption oriented attitude. So the consumer education program needs to develop the consumer knowledge and skill and reduce consumption oriented attitude for the preschooler's mother. 4. The teacher's need for preschooler consumer education are positively correlated to the level of consumer role performance. Thus the reeducation program for the teacher needs to develop the consumer role performance.

• Journal of The Korean Association of Information Education
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• v.22 no.3
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• pp.307-316
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• 2018

In this study, we conduct SW education using robot in elementary school, to examine the effects of SW education using robot and identify differences dependeing on the presence of assistance teacher. In order to achieve the purpose of this study, SW education using robot was conducted to 29 students. After collecting data, we examined mean difference using matched pair t-test and ANCOVA. Our results show that SW education using robot significantly improved CT and attitudes toward robots. CT, however, was not significantly improved in control group. Further, although improvement in attitudes toward robots was not associated with presence of assistance teacher, presence of assistance teacher did play a role in improvement of CT. This study was investigated effects of the SW education using robot and identify differences depending on the presence of assistant teacher, and expanded the understanding of the SW education using robot.

• Journal of the Korean Mathematical Society
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• v.60 no.3
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• pp.503-520
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• 2023

In this paper, using the theory of majorization, we discuss the Schur m power convexity for L-conjugate means of n variables and the Schur convexity for weighted L-conjugate means of n variables. As applications, we get several inequalities of general mean satisfying Schur convexity, and a few comparative inequalities about n variables Gini mean are established.

• Journal of applied mathematics & informatics
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• v.26 no.5_6
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• pp.1169-1183
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• 2008

In this paper, a method to find the weighted possibilistic variance and moments about the mean value of fuzzy numbers via applying a difuzzification using minimizer of the weighted distance between two fuzzy numbers is introduced. In this way, we obtain the nearest weighted point with respect to a fuzzy number, this main result is a new and interesting alternative justification to define of weighted mean of a fuzzy number. Considering this point and the weighted distance quantity, we introduce the weighted possibilistic mean (WPM) value and the weighted possibilistic variance(WPV) of fuzzy numbers. This paper shows that WPM is the nearest weighted point to fuzzy number and the WPV of fuzzy number is preserved more properties of variance in probability theory so that it can simply introduce the possibilistic moments about the mean of fuzzy numbers without problem. The moments of fuzzy numbers play an important role to estimate of parameters, skewness, kurtosis in many of fuzzy times series models.

• Journal of Practical Engineering Education
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• v.13 no.2
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• pp.293-300
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• 2021

The aim of this study was to measure preservice teachers' perceptions of Technological Pedagogical Content Knowledge (TPACK). The researcher analyzed responses on the TPACK scale of 307 students in A University located in Chungcheongbuk-do. During the statistical analysis, IBM SPSS 21 program was used to implement Independent Samples T-test, One-way Analysis of Variance, and Multiple Regression Analysis (Enter method). The results are as follows. First, for the mean difference by gender, the mean of female students was higher than that of male students in Pedagogical Knowledge, Pedagogical Content Knowledge, Technological Pedagogical Knowledge, and Technological Pedagogical Content Knowledge. Second, for the mean difference by grade level, the mean of the 1^st, 3^rd and 4^th graders was higher than that of the 2^nd graders in the Content Knowledge at a statistically significant level. Third, toward Technological Pedagogical Content Knowledge, Pedagogical Knowledge of .11 beta value, Pedagogical Content Knowledge of .11 beta value, and Technological Pedagogical Knowledge of .715 beta value were found to be statistically significant predictors. Finally, the researcher discussed development of the TPACK implementation manual and workbook and provision of various technology practice opportunities.

• Journal of The Korean Association For Science Education
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• v.30 no.1
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• pp.68-79
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• 2010

This study utilized the What Is Happening In this Class (WIHIC) questionnaire to examine students' perceptions of their science learning environment. Data was collected from 587 middle school students in seven coeducation schools in Seoul. Higher mean scores occurred on the scales of Student cohesiveness, Task orientation, Cooperation and Equity in the WIHIC, whereas lower mean scores occurred on Teacher support, Involvement and Investigation. The effects of gender on students' perceptions of their science learning environment were not statistically significant overall, but girls perceived Student cohesiveness and Cooperation more positively than boys. Correlations between the WIHIC scales of the low-level group that perceived their learning environments negatively (10 percentiles) and the high-level group that perceived their learning environments positively (90 percentiles) were computed. Teacher support, Involvement, Task Orientation and Investigation were highly correlated with each other in the low-level group, whereas only Teacher support and Equity were correlated in the high group. Educational implications were discussed.

• Journal of Korean Elementary Science Education
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• v.30 no.4
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• pp.535-552
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• 2011

The purpose of this study was to investigate elementary school teachers' conceptions on the general remarks (GR) in the new science teacher's guide, the teachers' conceptions on inservice training program of the GR, and their opinions of improvement on the GR. Also, the teachers' utilization of the GR was examined. The participants were 152 elementary school teachers who were teaching grade 3~6. A questionnaire was used to collect data. The results of this study are as follows; First, at least 13.2~17.1% of the teachers did not have specific conception of the purpose of the GR, and more than 90% of the teachers expressed that the GR is necessary in the teachers' guide. Second, about 60% of the teachers responded that the training program on the GR is necessary, and when the program is open, their most favorite agency and speaker were a provincial education office and a textbook developer(or author), respectively. Their most favorite time and period of the training program were the vacation and 15~30 hours, respectively. Third, the mean values on the frequency of use were lower than 3 point of the five-point Likert scale at both the GR for grade 3~4 and the GR for grade 5~6, and the teachers' main use of the GR was the planning a science lesson for an open class. Fourth, the teachers suggested various opinions and there was difference between the opinions about the GR for grade 3~4 and the opinions about the GR for grade 5~6.

• Journal of Digital Convergence
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• v.18 no.4
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• pp.1-7
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• 2020

The purpose of this study was to verify the moderating effect of teacher relationship adaptation between adolescents' domestic abuse experience and depression. For this purpose, a survey was conducted on 495 adolescents in high school in S city, Chungcheongnam-do, and the data collected were analyzed by using mean comparison analysis, correlation analysis, and moderating effect analysis. The major findings are as follows. First, depression of adolescents differed according to gender and academic achievement. Second, domestic abuse experience and depression showed significant positive correlation, but teacher relationship adaptation had a negative correlation with domestic abuse experience and depression. Third, the result of moderating effect analysis showed that the teacher relationship adaptation had a moderating effect on the relationship between domestic abuse experience and depression. Finally, based on this study, we discussed ways to reduce the depression of adolescents.

• Journal of Korean Elementary Science Education
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• v.41 no.1
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• pp.65-78
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• 2022

This study aims to 1) verify the validity of the Science self-efficacy scale and 2) perform a latent mean analysis of the background variables about a pre-service teacher. The study uses pre-tests to analyze data from 187 pre-service teachers, which uses Tark's Science self-efficacy scale (2011). To identify the factor structure, exploratory factor analysis was performed. Based on the results of the pilot test, the expert group council revised the scale for the pre-service teachers to respond to the 3-factor structure. In the main test, 354 data were analyzed through a modified Science self-efficacy scale, and exploratory and confirmatory factor analyses were performed. The results of the study are as follows: First, in the pilot test, the pre-service teacher responded to a 3-factor instrument, but the validity of two items was examined further below. Second, the pre-service teachers responded to a 3-factor instrument on 29 items for the modified Science self-efficacy scale. The total reliability of the instrument was .886 and the reliability of each factor was analyzed as .882-.886. Finally, the latent mean analysis by gender showed that females have a higher self-regulation efficacy factor and males have a higher self-confidence factor (Cohen's d > .3). Furthermore, there is a significant difference in task difficulty preference and self-regulatory efficacy factor (Cohen's d > .8) between the college preparatory and science subject preference. This study provides important insights into and contributions to the accurate scientific self-efficacy diagnosis of pre-service teachers, as well as proposes a curriculum to improve the scientific self-efficacy of prospective teachers.

• Korean Journal of Childcare and Education
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• v.7 no.4
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• pp.325-352
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• 2011

The purpose of this study is to examine the relationships between teacher's efficacy and job stress and the effects of educare center teacher's teaching efficacy on job stress. The subjects of this study were 200 teachers at the public, private, or home child-care centers in Pyeongtaek, Songtan and Osan. To analyze the general characteristics of subjects, frequency analysis and descriptives, ANOVA and correlation analysis, and multiple regression were used. The results of this study were as follows: First, educare center teacher's teaching efficacy level was a little higher than the average. The mean score of general belief of teaching efficacy was a little higher than the personal belief of teaching efficacy. Second, educare center teacher's job stress level show to be lower than average. Job related stress is the highest. Next is, the child related stress, personal related stress. Third, teaching efficacy significantly influenced on the job stress. The result indicated the higher educare center teacher's belief of efficacy was, the lower the job stress was. While general teaching efficacy was not associated with teaching efficacy, personal teaching efficacy was significantly related to teaching efficacy. The result of analyzing the effects of educare center teacher's teaching efficacy on job stress showed personal teaching efficacy had a strong influence on job stress. In detail, there was a significant negative correlation between personal teaching efficacy and job stress. Among the general factors such as the level of education, monthly income, work hours had significant influence on job stress. Therefore, the higher the level of education, the less monthly income, the longer work hours, it appeared that educare center teacher's job stress is higher.