• Korean Journal of Human Ecology
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• v.19 no.4
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• pp.625-639
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• 2010

This study compared male and female university students' perceptions of parenthood and their need for pre-parental educational program. Responses of 579 university students in 5 universities were collected using a questionnaire developed by the researchers. Data were analyzed using a T-test and Pearson's chi squared test. Results showed that (1) systematic and pre-parental education may increase opportunities for university students to prepare parent and child rearing skills. (2) Any pre-parent educational program developed should cover practical and such as communication skills, child-rearing techniques and ways of disciplining children. In this way an educational program could provide university students suitable guidance and give them a positive and proper attitude toward parenting should they become parents in the future.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2000.05a
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• pp.874-877
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• 2000

Pre-coated sheet materials are a cost-effective and environmentally attractive alternative to conventional sheet materials coated after forming. At present but the high scratch sensitivity of coating used for pre-coated metal sheet is a major limitation to use of these materials. Because of high scratch sensitivity, products made by pre-coated metal sheet are not formed by conventional design method. This study has been performed to investigate scratch characteristic of non-vinyl pre-coated metal (PCM) sheet. Using the simple U-bending test equipment, three non-vinyls PCM's were tested. This paper provides the results of bending tests showing the influence of sheet surface texture, tool material and process conditions. It was found that the influence of punch, die clearance and tool material had an effect upon the scratch characteristic.

• Journal of Korean Physical Therapy Science
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• v.11 no.1
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• pp.5-13
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• 2004

The purpose of this study was to the Pre-Post maximal exercise for analyze the Physiological Variable(Lactate, LDH, Glucose) in the runners. The subjects were 12 volunteers 6 sprinters and 6 distance runners who agreed to intention of this study. Subjects performed until possible all-out trials. Blood samples were taken from a median cubital vein Pre-Post exercise and every rest 5min during the all-out trial. The results obtained were summarized as follow ; 1) Lactate of Pre-Post exercise in treadmill test showed no significant difference between sprinters and distance runners, but showed significant in sprinters and distance respectively 2) LDH of Pre-Post exercise in treadmill test showed no significant difference between sprinters and distance runners, and that showed no significant in sprinters and distance respectively 3) Glucose of Pre-Post exercise in treadmill test showed no significant difference between sprinters and distance runners, and showed no significant in distance, but showed significant in sprinters therefor, since the runners has an intermittent characteristic which includes a frequent momentary change, it needs the fitness training that being consisted of various training, in the training method, it needs the training process which is from the whole fitness to specific fitness to improve general physical ability.

• Tribology and Lubricants
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• v.36 no.3
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• pp.117-123
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• 2020

In this study, the effect of the pre-mild wear mode test condition on the subsequent severe wear behavior of carbon steel has been investigated when the wear mode is varied according to the sliding speed change during sliding contact. Two sliding speeds of 0.3 m/s and 3 m/s for the mild wear mode test have been chosen and a sliding speed of 1 m/s for the severe wear mode test. A mild wear mode test at two different sliding speeds has been carried out during the severe wear mode test and total sliding distance of the mild wear mode test has been changed at this time. As a result, it could be found that the wear rate of carbon steel under the severe wear mode test after performing a pre-mild wear mode test is significantly reduced, compared with that before performing. However, its wear rate was slightly higher than that under the mild wear mode test. Oxides produced during the pre-mild wear mode test have been found to play a significant role in reducing the wear rate under the subsequent severe wear mode test. In particular, it was found that the effect of a pre-mild wear mode test performed at the sliding speed of 3 m/s has more rapid and the reduction in the wear rate was greater than thst at the sliding speed of 0.3 m/s.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.3 no.1
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• pp.108-127
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• 1996

The purpose of this research was to determine whether or not a education program of low back pain would have benificial effect on nurses. Nonequivalent control group pre-post test research was designed. Subjects for this study were 50 selected from nurses who work at a general hospital in Taegu. Of them, twenty seven were assigned to experimental group, twenty-three to control group. The data were collected during the period from June 27 to August 31, 1994. The instruments used in this study were Visual Analog Scale for low back pain, Sit-and-reach test for trunk flexibility, and 1 min sit up test for abdominal muscle endurance. Data related to general chracteristics and factors of low back pain were collected with questionnaire developed by this reseacher. The data were analyzed by $X^2-test$, t-test and paired t-test, using the SAS package program. The results of this study are summerized as follows : 1. The numbers of the experimental group with low back pain were not a statistically significant difference from pre to posttesting($X^2=0.77$, p=.379), and the numbers of the control group with low back pain were also not a statistically significant difference from pre to posttesting($X^2=0.09$, p=.767). 2. The severity of low back pain of the experimental group was not a statistically significant difference from pre to posttesting(t=-0.55, p=.5857), and the severity of low back pain of the control group was also not a statistically significant difference from pre to posttesting(t=-0.70, p=.3101). 3. The trunk flexibility of the experimental group was not a statistically significant difference from pre to posttesting(t= 1.08, p=.2835), and the control group's trunk flexibility was also not a statistically significant difference from pre to posttesting(t=0.85, p=.4026). 4. The abdominal muscle endurance of the experimental group was a statistically significant difference from pre to posttesting(t=-2.42, p=.0190), but the control group's abdominal muscle endurance was not a statistically significant difference from pre to posttesting(t=-0.06, p=.9556) This study suggest that replication of study with more sample and more rigid treatment should be needed. And furthermore, the longitudinal research is needed to determine the effectiveness of education program.

• Communications of Mathematical Education
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• v.38 no.3
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• pp.331-351
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• 2024

The purpose of this study is to examine the effects of taking a 「Theory of mathematical education」 on the mathematical beliefs of pre-service teachers. For this theory of mathematical education was run in the first semester of 2021 and 2022, and the data was collected and analyzed by conducting a mathematical beliefs questionnaire, drawing a mathematics class scenes test, and focus group interviews with participants. According to the results of the study, there was a statistically significant difference between the pre-test and post-test results on the 'process of inquiry' of the nature of mathematics and the 'active participation' of mathematics learning in the mathematical belief category of pre-service teachers. In addition, in the image test of mathematics classes, the proportion of the image of the student-centered class increased significantly in the post-test compared to the pre-test, while the proportion of the image of the teacher-centered class decreased significantly. It can be assumed that the various learning opportunities provided in the pre-service mathematics teacher education program promoted the composition of practical knowledge based on propositional knowledge of pre-service teachers, and this series of processes contributed to transforming the mathematical beliefs of pre-service teachers into learner-centered beliefs.

• Journal of East-West Nursing Research
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• v.21 no.1
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• pp.10-17
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• 2015

Purpose: The purpose of this study was to investigate nursing professionalism and affecting factors of nursing professionalism in freshman nursing students. Methods: Pre and post-test study design was used to compare the differences of sutdy variables at the completion of a fundamental nursing course. A convenience sample of 164 were recruited. The date were collected from September 1st to December 1st in 2012. Results: The mean scores of the nursing professionalism were significantly increased from a pre-test (3.73) to post-test (3.93). The mean scores of the self-esteem were significantly increased from a pre-test (3.05) to post-test (3.13). Self-esteem and satisfaction with nursing were factors that affect nursing professionalism. Conclusion: Attention should be given to nursing education to cultivate nursing professionalism by improving self-esteem and satisfaction with nursing in nursing students.

• Journal of the Korea Convergence Society
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• v.9 no.5
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• pp.247-256
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• 2018

The purpose of this study is to examine effects of pre-learning and role learning using video on self-regulated learning of nursing students in fundamental nursing practice education. A nonequivalent control group was designed to conduct a pre-post test for this study. The participants were assigned to the experimental(n=84) or control group(n=76). Data was collected from March to June, 2016. The experimental group received education based on pre-learning and role learning using video for 13 weeks. On the other hand, the control group only received explanation-based education. Data was analyzed using ${\chi}^2-test$, independent t-test, and ANCOVA. There was a significant increase in rehearsal, metacognition, self-efficacy, and help seeking in the experimental group compared to those in the control group. Results of this study indicate that pre-learning and role learning using video were effective in enhancing students' ability in rehearsal, metacognition, self-efficacy, and help seeking sections.

• KCI Concrete Journal
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• v.12 no.1
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• pp.69-77
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• 2000

The reinforced concrete(RC) flexural members strengthened with steel plate/CFS at soffit have initial stresses and strains in reinforcements and concrete caused by the service loads at the time of retrofitting works. These initial residual stresses and strains of strengthened beams may affect the flexural performance of the rehabilitated beams. The objective of this study is to evaluate and verify the effectiveness of rehabilitation by external bonded steel plates and CFS to the tension face of the beams under three conditions of pre-loading. Thirteen beam specimens are tested and analyzed. Main test parameters are pre-loading conditions, strengthening materials and reinforcement ratio of specimens. The effect of test parameters on the strengthened beams is analyzed from the maximum load capacity, load-deflection relationship, state of stress of the materials. crack propagation phase, and failure modes. Both test results and design formulas of ACI Code provisions are compared and evaluated.

• Archives of Metallurgy and Materials
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• v.67 no.4
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• pp.1491-1495
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• 2022

The present research deals with the effect of pre-strain on the hydrogen embrittlement behavior of intercritically annealed medium-Mn steels. A slow strain-rate tensile test was conducted after hydrogen charging by an electrochemical permeation method. Based on EBSD and XRD analysis results, the microstructure was composed of martensite and retained austenite of which fraction increased with an increase in the intercritical annealing temperature. The tensile test results showed that the steel with a higher fraction of retained austenite had relatively high hydrogen embrittlement resistance because the retained austenite acts as an irreversible hydrogen trap site. As the amount of pre-strain was increased, the hydrogen embrittlement resistance decreased notably due to an increase in the dislocation density and strain-induced martensite transformation.