• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.454-462
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• 2018

This study examines the influence of pre-service early childhood teacher's empathy and interpersonal competence on teacher efficacy. The subjects of this study include 358 pre-service early childhood teachers. The instruments used in this study were the emotional empathy scale, interpersonal competence questionnaire (ICQ) and the teacher efficacy scale. Collected data was analyzed using the SPSS program. In order to determine the general background of the pre-service teachers, the frequency and percentages were used. For examination of empathetic ability, interpersonal competence and teacher efficacy of pre-service early childhood teachers, a descriptive statistics analysis was conducted. In addition, in order to assess the relationship among empathetic ability, interpersonal competence and teacher efficacy of pre-service early childhood teachers, Pearson's correlation analysis was conducted. Lastly, for the examination of the effects and relative explanation of empathetic ability, interpersonal competence and teacher efficacy of pre-service early childhood teachers, multiple regression analysis was conducted. The results of this study were as follows: first, pre-service early childhood teachers were shown to have higher empathetic ability, interpersonal relationships and teacher efficacy rates than average. Second, there was a positive correlation among empathetic ability, interpersonal competence and teacher efficacy of pre-service early childhood teachers. Third, teacher efficacy of pre-service early childhood teachers was influenced by their empathetic ability and interpersonal competence. The results of this study suggest that teacher efficacy improvement programs for pre-service early childhood teachers should consider their empathetic ability. Also, study results emphasize the necessity of empathetic ability and interpersonal relationship improvement program for pre-service early childhood teachers.

• Journal of Korean Elementary Science Education
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• v.28 no.4
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• pp.373-381
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• 2009

This study investigated pre-service elementary school teacher's perception of science curriculum use in Korea and Japan. Ninety four pre-service elementary teachers in Korea and fifty three pre-service elementary teachers in Japan are participated in this study. As the result, four patterns were revealed. First, science isn't perceived as an important or interesting subject by the pre-service elementary teachers in both countries. Second, the perception of Korean pre-service teachers about the objectives of science subject is relatively negative. Third, in the case of Korea, the perception about the effectiveness of science subject content and level, and the amount of learning is shown to be more negative than those of Japan. Finally, in both countries, the science majors and the non-science majors have negative perceptions about the inclusion of the perspectives and methods of assessment and the preparation of teaching and learning plan in curriculum.

• Journal of Environmental Science International
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• v.12 no.4
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• pp.367-373
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• 2003

The focus of this study was to identify and describe environmental preconceptions held by pre-service elementary teachers about three issues : greenhouse effect, ozone layer depletion and acid rain. Two hundred and twenty nine pre-service elementary teachers participated in this study. A 36 question survey was created by one of the authors. The questions focused on the cause, effects, and interactions of three environmental issues greenhouse effect of one layer depletion and acid rain. Pre-service elementary teachers answered the questions on a Likert scale. An analysis of the survey data indicated that the majority of pre-service elementary teachers possess an array of incorrect conceptions about the causes and effects of the greenhouse effect ozone layer depletion, and acid rain. and also many pre-service elementary teachers thought that there were causal relationships among the increase in greenhouse effect, the destruction of ozone layer, and the increase of acid rain.

• Proceedings of the KSME Conference
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• 2002.08a
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• pp.177-180
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• 2002

The study on the design of pre-swirl stator vanes is performed. The pre-swirl stator vanes is an energy-saving device to improve propulsive performance by providing pre-swirl to the propeller inflow. The theoretical background and the design conditions for pre-swirl stator vanes are presented. The flow characteristics around the pre-swirl stator vanes attached ship hull are analyzed through the experimental method. The technique to determine the optimum location, angle and the number of stator vane is investigated and applied it to 310,000 TBW VLCC The flow velocities are measured using 5-hole Pilot tubes at the condition with and without a propeller.

• Korean Journal of Childcare and Education
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• v.12 no.6
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• pp.227-248
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• 2016

The purpose of this study was to investigate the contents of pre-service early childhood teacher's practicum experience in kindergartens and child care centers through the analysis of practice teaching journals. The subjects of this study were a total 52 practice teaching journals of 26 pre-service early childhood teachers who completed their practicum in kindergartens and child care centers. This study analyzed the type of teaching practice management, the type of activities, and the contents of journal writings. The findings are as follows; First, pre-service teachers experienced a similar ratio of the type of teaching practice management in both types of teaching practice. Second, pre-service teachers performed more group activities in practicum in kindergartens, but more choice activities in practicum in child care centers. Third, the journal writing contents of pre-service teachers in both types of teaching practice mainly addressed the operating of educational and child care activities, and the execution of observing young children. But some categories of teacher's competency were hardly addressed. The results of this study could be used as basic data for designing early childhood practicum programs.

• Korean Journal of Childcare and Education
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• v.14 no.6
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• pp.205-218
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• 2018

Objective: The purpose of this study is to explore and analyze the way pre-service early childhood teachers think about teacher happiness through metaphor analysis. Methods: A total of 225 pre-service teachers were selected from 4-year universities in the Gyeongnam area and open questionnaires were distributed to the participants. A total of 207 out of the 225 questionnaires were selected for the study. Results: First, based on psychological well-being, positive interpersonal relationship, self-acceptance, autonomy, environmental control, and life purpose were derived. Pre-service early childhood teachers typified teacher happiness into five types: positive interpersonal relationships, self-acceptance, autonomy, environmental control, and life purpose. Second, pre-service early childhood teachers perceived teacher happiness as positive. Third, pre-service early childhood teachers perceived interpersonal relationships, self-acceptance, and purpose of life as positive, while environmental control and autonomy were perceived as negative. Conclusion/Implications: The results of this study suggest that it is necessary to improve the quality of teachers' education and to develop a program to raise positive awareness of future early childhood teachers. These study results can also be used as basic data for high quality teacher education.

• Magazine of the Korean Society of Agricultural Engineers
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• v.17 no.4
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• pp.3921-3930
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• 1975

This research was carried out to investigate several mechanical characteristics of pre-stressed steel beams. The configuration of specimens used for this study were as follows; a cover plate having permissible fiber stress of 4,000 kg/$\textrm{cm}^2$ was welded at bottom having the allowable bending stress 2500 kg/$\textrm{cm}^2$ steel beam, the section ratios of pre-stressed steel beam and cover plate were 0.5 and 0.6. Adopted pre-stresses were 0%, 50%, and 100% of an allowable fiber stress of a steel beam. The results obtained from the study may be summarized as follows; 1. The elastic range of a beam was increased by the application of pre-stress to the beam, which leads to a lighter section. 2. The permissible moment capacity of a pre-stressed steel beam was greated than that of a steel beam without pre-stressing. 3. The equivalent allowable stress induced by adopting the different section ratio of pre-stressed beam to cover plate were figured out 4. The optimum value of section ratio of beam and cover plate was 0.3 to 0.4 in case of a 1.5m span composite beam, a combination of an allowable stress 2,500kg/$\textrm{cm}^2$ steel beam and a permissible fiber stress 4,000 kg/$\textrm{cm}^2$ steel cover plate, was used. 5. The magnitude of the pre-stress was desirable to be same as the allowable stress of a steel beam. 6. It was concluded that if the construction techniques in the field are developed and improved, the practicing of pre-stress to the steel structure has a promising future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.4
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• pp.2537-2547
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• 2015

The aim of this study was to examine the longitudinal effect of Pre-service Teacher Education Program for Children's Creativity. The participants of this study were 67 pre-service teachers in Seoul, Kyungggi-do, and Chungcheong-do, Korea. Thirty-six pre-service teachers were assigned to the control group and pre-service teachers were assigned to the experimental group. Pre-service teacher's creativity was measured in three times. TTCT was applied to measure pre-service teacher's creativity and their children's creativity. Multivariate Latent Growth Model was applied to verify the effect of the program on pre-service teacher's creativity. Also, Multiple Regression was used to examine the effect of the program on their children's creativity. As a result, the participation of the program was longitudinally effective on not only pre-service teacher's creativity development but also their children's creativity. The results of current study suggested that it is necessary to help the pre-service teachers foster their creativity in early childhood teacher preparation program.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.26 no.2
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• pp.179-184
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• 1981

The study was conducted to know the differential growth responses of soybean cultivars as affected by various application stages of Metribuzin herbicide, at the University experimental farm of Chonnam Nat'l. Univ, Kwangjoo, 1980. Experimented soybean materials were six cultivars, as Kwanggyo, Dongbuktae, Bongui, Yukwoo 3, Suweon 85, and Suweon 86., . and Laid-out application stages were five as pre-sowing, Pre-emergence, Early Post-emergence, and Late Post-emergence treatment comparing with Control. Results obtained from the study were as follows: Among experimented soybean cultivars, no significantly tolerant cultivar was shown. Highly significant differences in phytotoxicities by Metribuzin treatments were detected among various application stages, and crop tolerances were recognized bigger in order as E. Post-emg. < L. Post-emg. $\ll$ Pre-emg. < Pre-sowing $\leq$ Control. The phytotoxic symptoms of all soybean cuitivars were severely recorded in order of Leaf No. /Plant < Plant height $\ll$ Branch No. /Plant. For the cultivation of most soybean cuitivars, the use of Metribuzin in Pre-sowing or Pre-emergence were recommended, and especially it is expected to follow of more detailed study on soil-incorporation method in Pre-sowing treatment, and rather the tank-mixture system of Metribuzin with others than the mono-application system for the safe-use and enlargement of weeding-spectrum.

• Proceedings of the Korea Water Resources Association Conference
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• 2023.05a
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• pp.158-158
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• 2023

Characterizing the performance of precipitation (hereafter PRE) products in estimating the uncertainties in daily PRE in the era of global warming is of great value to the ecosystem's sustainability and human survival. This study intercompares the performance of different PRE products (gauge-based, satellite and reanalysis) sourced from the Frequent Rainfall Observations on GridS (FROGS) database over diverse climate zones in Africa and identifies regions where they depict minimal uncertainties in order to build optimal maps as a guide for different climate users. This is achieved by utilizing various techniques, including the triple collection (TC) approach, to assess the capabilities and limitations of different PRE products over nine climatic zones over the continent. For daily scale analysis, the uncertainties in light PRE (0.1 5mm/day) are prevalent over most regions in Africa during the study duration (2001-2016). Estimating the occurrence of extreme PRE events based on daily PRE 90th percentile suggests that extreme PRE is mainly detected over central Africa (CAF) region and some coastal regions of west Africa (WAF) where the majority of uncorrected satellite products show good agreement. The detection of PRE days and non-PRE days based on categorical statistics suggests that a perfect POD/FAR score is unattainable irrespective of the product type. Daily PRE uncertainties determined based on quantitative metrics show that consistent, satisfactory performance is demonstrated by the IMERG products (uncorrected), ARCv2, CHIRPSv2, 3B42v7.0 and PERSIANN_CDRv1r1 (corrected), and GPCC, CPC_v1.0, and REGEN_ALL (gauge) during the study period. The optimal maps that show the classification of products in regions where they depict reliable performance can be recommended for various usage for different stakeholders.