• Journal of the Korean Home Economics Association
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• v.46 no.1
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• pp.117-129
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• 2008

In present study, using 1572 low-income families and 266 Head Start teachers from Family and Child Experiences Survey (FACES) in the U.S., we examined the effects of mothers' reading and the characteristics of interaction between teacher-child interaction on 4-and 5-year-olds' cognitive development represented by their verbal and numerical abilities. Frequencies of mothers' reading at home consistently predicted higher scores of children's Peabody Picture Vocabulary Test and Woodcock Johnson Applied Problems. Teachers' sensitivity and permissiveness in their interactions with children in classroom were positively related to children's verbal abilities and teachers' sensitivity predicted better numerical abilities of children after controlling for mothers' reading and the characteristics of family and teacher. The findings shed light on the contributions of teacher behaviors and familial factors to children's cognitive development calling for attention to the need for parent education on cognitively stimulating family environments and continuing education for early childhood teachers focusing on quality interactions with young children.

• Journal of Korean Elementary Science Education
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• v.35 no.4
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• pp.416-425
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• 2016

As curriculum statements require addressing ethical and social issues which are raised by modern science and technology, the ability to perceive ethical and social issues regarding science is necessary for teachers to introduce socio-scientific issues (SSI) in their science class. The purpose of this study is to explore elementary school teachers' ethical sensitivity on SSI and attempts to give implications for teacher education. To explore the ethical sensitivity in the context of SSI, the revised version of the Test for Ethical Sensitivity on Science (TESS) was used. Two socio-scientific issues (genetic engineering and radioactive waste) were provided to read and write down five possible questions they believed should be considered before reaching a decision. Data was collected from eighty-two elementary school teachers in Korea. To analyze the ethical sensitivity, the responses including ethical considerations were analyzed by situation and ethical issues. The result showed that 81 out of 82 teacher participants provided at least more than one ethical consideration on each scenario of this study. However, not many teacher could raise various ethical issues and situation that ethical issue might occur. There were only a few teaches who could consider all the situations, 'process of scientific research', 'application of science and technology', and 'science influenced by society', that ethical issues might occur. Especially, teachers failed to consider that the ethical issue can occur in the situation when science is influenced by society. Based on the results, we suggest that during teacher education teachers need to experience finding various ethical issues that can occur in the context of SSI and especially considering the ethical issues when science is influenced by society.

• Journal of Korean Society of Forest Science
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• v.109 no.3
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• pp.341-349
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• 2020

This study analyzed the effectiveness of the forest education program for teacher training. The training program was conducted at the National Center for Forest Activities, in Hoengseong, Korea in August 2017. Presurveys and postsurveys were administered to 46, K-12 teachers who participated in the forest education program. The results showed a statistically significant increase in the teachers' environmental sensitivity, eco-friendly teaching attitude, and teacher efficacy after the program. Survey participants expressed a slightly lower confidence in terms of teacher efficacy after participating in the program. This confirms the need for a training program with a focus on practical teaching skills, which would help teachers become more confident in providing forest education. This study verifies the effectiveness of the forest education program for teachers, who play an important role in developing students' environmental sensitivity and eco-friendly attitude. Furthermore, it suggests the need to develop more effective forest education programs for teacher training.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.12
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• pp.570-577
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• 2020

This study is aimed at figuring out the influence of early childhood teachers' playfulness and sensitivity on play teaching efficacy. The subjects of the study were 262 early childhood teachers working in kindergarten and day care centers located in J City. The instruments were the Adult Playfulness Scale, the Sensitivity Scale, and the Play Teaching Efficacy Scale. The collected data were analyzed by using SPSS. In order to find out the general background of the early childhood teachers, frequency and percentage were used. In addition, in order to assess the relationships among playfulness, sensitivity, and the play teaching efficacy of an early childhood teacher, Pearson's correlation analysis was carried out. Lastly, for examination of the effects and a relative explanation of the effects of playfulness and sensitivity on play teaching efficacy in early childhood teachers, a multiple regression analysis was conducted. The results of this study are as follows. First, there was positive correlation among playfulness, sensitivity, and play teaching efficacy in the early childhood teacher. Second, play teaching efficacy of early childhood teachers was influenced by their playfulness and sensitivity. In conclusion, the significance of this study is that there was a significant correlation among playfulness, sensitivity, and play teaching efficacy in early childhood teachers, and that both of the first two variables were factors influencing play teaching efficacy.

• Korean Journal of Childcare and Education
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• v.11 no.3
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• pp.1-23
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• 2015

This study examined the effect of infant teacher's sensitivity, efficacy and interaction on the social and emotional development of infants. The participants of this study were 169 infants and their teachers in daycare centers located in Seoul and Gyeonggi-do. The instruments were collected through teachers' responses. Data were analyzed through the variance analysis using PASW 18.0 to verify the infant teachers' susceptibility, efficacy, and infant-teacher interaction based on infant teachers' background variables; to find out the relationship between the variables, Pearson correlation analysis was performed, and to find out the relative influence of variables on the infants' social and emotional development, stepwise multiple regression analysis was performed. Results were as follows. Firstly, Among the background variables of the teachers, their career as infant teachers displayed differences in the infants' social and emotional development, and the susceptibility, efficacy, and infant-teacher interactions displayed partial differences based on the teaching career, career as infant teachers, age, daycare center type, and the academic background of the teachers. Secondly, there were positive relationships between infant teacher's sensitivity, efficacy and interaction and infants' social and emotional development. Thirdly, infant teachers' sensitivity, efficacy and infant-teacher interaction had an influence on infants' social and emotional development at the same time. Especially, sensitivity and interaction were powerful and influential variables and their explained variance was 53%. These results suggested that teachers' efforts must be made to interact positively with infants and to increase their sensitivity level to respond to infants in order to increase infants' social and emotional development.

• Korean Journal of Childcare and Education
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• v.16 no.6
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• pp.233-252
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• 2020

Objective: The purpose of this study is to verify the effect of childcare teachers' positive human relationships in childcare centers on care sensitivity to children through their work immersion. Methods: The subjects of this study were child care teachers who were conveniently sampled from Incheon City. A total of 380 surveys were distributed, and a total of 334 surveys were analyzed, Poor or incomplete questionnaires collected were excluded. The. Sobel Test and Baron & Kenny's multi-regression were used for the analysis with the SPSS 23.0 program. Results: Child care teachers' positive relationships with directors, with their fellow teachers, and with parents had an influence on teachers' care sensitivity to children. Teacher's positive relationships with their fellow teachers and with parents had an influence on teachers' work immersion, which mediated the relationships between teacher's human relationship and their care sensitivity to children. Conclusion/Implications: The positive relationships of child care teachers directly and indirectly affect their sensitivity to children through teachers' work immersion.

• Hwankyungkyoyuk
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• v.20 no.2
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• pp.54-66
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• 2007

The purpose of this study is to find identity of the elementary environmental education and inquire elements of professionalism in environmental education that elementary teachers should have. This study performed a half-structured interview in twice to the eight of elementary teachers who completed the environmental education curriculum course in a graduate school or participated in the teacher training program before. As a result, this study found that the identity of the elementary environmental education consists of the unification comprehending various subjects, the well-rounded sensitivity balancing intellectual, emotional and behavioral aspects, and the grounding in forming environmentally friendly living-habit and academic basis of environments. Moreover, this study found that the teacher training program for the specialty of the elementary environmental teachers should comprise of the following twelve components: the knowledge of overall environmental curriculum, environmental life guidance and environmental classroom management, environmental teaching skills and function, the passion and commitment about environmental education, environmental sensitivity, understanding of education studies, the values and attitude about environment, environmental behavior, understanding the relationship between environmental psychology and developing stage of child, the general education and communication/cooperation with colleagues or local community, understanding of the role as an teacher for the elementary environmental education. More importantly, it would be very crucial that the teachers themselves who are the main body of education system should recognize the their role as the professionals in order to improve the quality of education.

• The Mathematical Education
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• v.52 no.3
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• pp.379-398
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• 2013

The purpose of this research is to study a perception of multicultural education for preservice teachers who major in mathematics. The research has been done on the data collected from 126 preservice teachers in Gangwon-do who major in mathematics. The data collected include experience of multiculturalism, multicultural efficacy, multicultural understanding and multicultural sensitivity. The data have been analyzed by reliability test, t-test, one-way anova and pearson correlation. Most of preservice teachers who major in mathematics have had no experience of multiple cultures. But they have shown a high perception on multicultural education and a significant positive correlation on their experience of multiculturalism, multicultural efficacy and multicultural sensitivity. Furthermore, the female preservice teachers' multicultural efficacy, multicultural understanding and multicultural sensitivity are much more high than the male preservice teachers'. The difference between different sex has been statistically significant.

• Steel and Composite Structures
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• v.35 no.6
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• pp.779-788
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• 2020

Multi-Walled Carbon nanotubes (MWCNT) coupled with Silicone Rubber (SR) can represent applicable strain sensors with accessible materials, which result in good stretchability and great sensitivity. Employing these materials and given the fact that the combination of these two has been addressed in few studies, this study is trying to represent a low-cost, durable and stretchable strain sensor that can perform excellently in a high number of repeated cycles. Great stability was observed during the cyclic test after 2000 cycles. Ultrahigh sensitivity (GF>1227) along with good extensibility (ε>120%) was observed while testing the sensor at different strain rates and the various number of cycles. Further investigation is dedicated to sensor performance in the detection of human body movements. Not only the sensor performance in detecting the small strains like the vibrations on the throat was tested, but also the larger strains as observed in extension/bending of the muscle joints like knee were monitored and recorded. Bearing in mind the applicability and low-cost features, this sensor may become promising in skin-mountable devices to detect the human body motions.

• Steel and Composite Structures
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• v.29 no.6
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• pp.771-783
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• 2018

In this paper, topology optimization (TO) is applied to find a new configuration for the perforated steel plate shear wall (PSPSW) based on the maximization of reaction forces as the objective function. An infill steel plate is introduced based on an experimental model for TO. The TO is conducted using the sensitivity analysis, the method of moving asymptotes and SIMP method. TO is done using a nonlinear analysis (geometry and material) considering the buckling. The final area of the optimized plate is equal to 50% of the infill plate. Three plate thicknesses and three length-to-height ratios are defined and their effects are investigated in the TO. It indicates the plate thickness has no significant impact on the optimization results. The nonlinear behavior of optimized plates under cyclic loading is studied and the strength, energy and fracture tendency of them are investigated. Also, four steel plates including infill plate, a plate with a central circle and two types of the multi-circle plate are introduced with equal plate volume for comparing with the results of the optimized plate.