• Journal of Korean Home Economics Education Association
• /
• v.30 no.2
• /
• pp.57-75
• /
• 2018

This study aimed to analyze the effects of child abuse and neglect on male·female high school students and the moderating roles of peer attachment and closeness to teachers in the process. By using the second to the seventh yearsʼ data of 4^th grade elementary school student panel participating in the Korean Children & Youth Panel Survey(KCYPS), the study calculated descriptive statistics and performed hierarchical regressions. The main results of this study were as follows. First, for male high school students, as each level of child abuse, peer attachment, and closeness to teachers was higher, the level of ego-resilience was higher. However, as the level of child neglect was higher, the level of ego-resilience was lower. For female high school students, as the level of child neglect was higher, the level of ego-resilience was lower, while each level of peer attachment and closeness to teachers was higher, the level of ego-resilience was higher. In addition, for only male high school students, peer attachment moderated the effect of child abuse on ego-resilience. On the other hands, for both male and female high school students, as the level of child abuse and neglect were higher, the level of self-esteem was lower, while each level of peer attachment and closeness to teachers was higher, the level of self-esteem was higher. Moreover, for only female high school students, peer attachment moderated the effects of child abuse and neglect on self-esteem.

• Educational Technology International
• /
• v.17 no.1
• /
• pp.39-57
• /
• 2016

The present study aims to examine whether the gender and school of students affect smart media literacy in South Korea. For the purpose of this study, data in Korea Youth Competency Measurement and International Comparative research II was analyzed. The data was nationwide data collected from 11,284 students in elementary, middle, high, and undergraduate school in South Korea. The participants were asked to answer 18 items of smart media literacy questionnaire (SMLQ) that consisted of four factors; ability to learn using smart media, ability to operate smart devices, ability to use smart applications, and positive perception of using smart media. As a result, statically significant differences were observed in the participants' gender and school levels. In relation to the gender level, female students scored higher than male students on the smart literacy survey. With regard to the school level, middle school students scored the highest while elementary school students scored the lowest. In addition, a statistically significant difference was found in the gender level of smart media literacy on two dependent measures in terms of the interaction effect of gender and school levels. Based on the findings of the present study, strategies to improve smart media literacy according to students' gender and school levels have been made and suggestions for further research have been proposed in detail.

• Journal of Digital Convergence
• /
• v.15 no.1
• /
• pp.35-43
• /
• 2017

This study aimed to investigate the mediating effect of self-esteem between school violence victimization and happiness of adolescents. For this study, 1274 adolescents were surveyed at D city of Korea from April to May in 2016. Main results of this study were as follows. First, it was found out that school violence victimization was significantly different depending on gender, school level, academic achievement. And self-esteem was significantly different depending on gender, school level, family type, income level, academic achievement. Also their happiness was significantly different depending on gender, school level, income level, academic achievement. Second, school violence victimization and self-esteem were negatively correlated. And school violence victimization and their happiness were negatively correlated. Third, self-esteem was partially mediated for elementary, middle school students, but perfectly mediated for high school students between school violence victimization and happiness of adolescents. Lastly, policy implications for the students with lower happiness due to school violence victimization were suggested.

• Journal of the Korea Convergence Society
• /
• v.6 no.4
• /
• pp.197-203
• /
• 2015

The purposes of this study were to analyze how effects of parental monitoring, parental affection, inconsistency in parenting attitudes on adolescents' school adjustment and intervention to help adolescents school adjustment. Korea Youth Policy Institute to achieve the research objectives, 'Korea Child Youth Panel Survey'(KCYPS 2010) using data from the First year 1 data were analyzed by Descriptive Statistic, t-Testing, ANOVA and Multiple Regression Analysis. The results of the study are as follows. parenting attitudes were an independent variable having a partially significant effect on middle school students' school adjustment. As a results, The level of parental monitoring and affection are high, the level of middle school students' school adjustment gets higher. On the contrary, the level of parents' inconsistency are high, the level of middle school students' school adjustment gets lower. Therefore, it is necessary to research various options to develop promoting positive parenting attitude in order to increase the level of the middle school student's school adjustment

• International conference on construction engineering and project management
• /
• 2009.05a
• /
• pp.1053-1059
• /
• 2009

Construction system modeling can enhance work performance by following the behaviors of a system. System behaviors may originate from physical aspects of a system, namely operation level variables, or from non-physical aspects of a system known as context level variables. However, construction system modelers usually focus on only one type of system variable (i.e., operation level or context level) which can lead to less accurate results. Hybrid modeling with System Dynamics (SD) and Discrete Event Simulation (DES) is one of the approaches that has been utilized to address this issue. In this research, an SD-DES hybrid model of a steel fabrication shop is developed, and the benefits of capturing context level variables together with operation level variables in the model are discussed.

• Journal of Fisheries and Marine Sciences Education
• /
• v.24 no.6
• /
• pp.977-988
• /
• 2012

The purpose of this study was to help teachers increase the level of student's school life satisfaction by comparing between the practical data of a group which have an accordant perception for class teacher's discipline style perceived by between teacher him/herself and student with another group which have a discordant perception for class teacher's discipline style perceived by between teacher him/herself and student. For this study, 1460 second grade special high school students in Pusan were selected. And 1273 students and 56 teachers' questionnaires were used for analysis, while 5 questionnaires went uncompleted. T-test and Multiple Regression Analysis were used for compiling statistics of collected data. The results of this study are as follows: First, perceptions about the teacher's discipline style perceived by between teacher him/herself and student were different. Second, the levels of student's school life satisfactions were different by two group. A group which has an accordant perception for class teacher's discipline style perceived by teacher him/herself and student shows the high level of school life satisfaction than B group which has an discordant perception. Last, class teacher's discipline style which affects the level of student's school life satisfaction was different by the two group. These results suggest that to increase the level of student's school life satisfaction, class teachers have to a mutual understanding first, and then approach their students with different discipline style by the level of their interactive relationship with their students.

• The Journal of the Acoustical Society of Korea
• /
• v.28 no.3E
• /
• pp.118-135
• /
• 2009

The level set based approach is one of active methods for contour extraction in image segmentation. Since Osher and Sethian introduced the level set framework in 1988, the method has made the great impact on image segmentation. However, there are some problems to be solved; such as multi-objects segmentation, noise filtering and much calculation amount. In this paper we address the drawbacks of the previous level set methods and propose an extension of the traditional fast level set to cope with the limitations. We introduce a relationship matrix, a new split-and-merge criterion, a modified Chan-Vese criterion and a novel filtering criterion into the traditional fast level set approach. With the segmentation experiments we evaluate the proposed method and show the promising results of the proposed method.

• Journal of Power Electronics
• /
• v.19 no.1
• /
• pp.79-88
• /
• 2019

The neutral-point (NP) voltage of three-phase three-level NP-clamped converters is needed for balance. To maintain NP potential and suppress ripple, a novel NP voltage balancing strategy is proposed in this work. The mechanism of NP voltage variation is studied first. Then, the relationship between the disassembly of zero level (O level) and NP current is studied comprehensively. On these bases, two methods for selecting one of three output phases for the disassembly of its O level are presented. Finally, simulation and experimental results verify the validity and practicability of the proposed algorithms.

• Journal of the Korean Dietetic Association
• /
• v.11 no.4
• /
• pp.405-417
• /
• 2005

The purpose of this study was to evaluate students' satisfaction with foodservice of middle school by region in Gangwon province. Students’ satisfaction concerning foodservice quality characteristics was surveyed by using importance performance analysis(IPA) technique in middle school foodsevice operations. Middle school students from four cities(Gangnung, Sokcho, Wonju, Chuncheon) were surveyed by self-developed questionnaire. Total of 1,025 questionnaires(female 521 and male 504 respectively) were analyzed using SAS program. The results of this study are summarized as follows: 1.The performance level of foodservice quality attributes was significantly different according to region. 2.The attribute of the highest performance level was taste of food. The attributes of the lower performance level were waiting time of meal service and treatment about complaints. The attributes of the higher importance level were hygiene of food and dining room and hygiene of spoon and cup and drinking water table. 3.Satisfied quality attributes identified were taste of food and variety of menu. Dissatisfied quality attribute identified was treatment about complaints. 4.The satisfaction of middle school lunch service was lower than their elementary school period. 5.The satisfied quality attributes of middle school foodservice were portion size, facility of dining room, hygiene of food, variety of menu compared with their elementary school period.

• Journal of environmental and Sanitary engineering
• /
• v.17 no.2
• /
• pp.55-62
• /
• 2002

For my thesis I have analyzed the differences between the traffic noise level surrounding the schools and the perceived level of noise. 1 have used the ways of measurement and questionnaires to support my study. According to the analysis, the measured noise level was higher than the expected noise level. The equivalent noise level was proven to be higher when the windows of the classrooms were open. The noise level was also higher on the third floor than the first floor. The correlation between the measured noise level and the perceived level of noise was tested in each school. The school which had a higher expected noise level showed a high perceived level of noise. The measured noise level and the perceived level of noise became larger on the higher floors. Through the questionnaires, the traffic noises were proven to be the largest noise-making source surrounding the schools. Most of the students replied on the questionnaires that they have been consistently bothered by the noise. It interfered with their studies and concentration. Also, the sound of their voices became louder because of the noise around their schools. Therefore, I have come to the conclusion that the traffic noises that surround the schools give the students negative influences.