• Journal of Fisheries and Marine Sciences Education
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• v.29 no.2
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• pp.365-379
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• 2017

The purpose of this study was to test the mediated effects of emotional regulation in the relations between maternal parenting and children's adaptation to school life of elementary school students. Three-hundred Seven elementary school students completed the maternal parenting scale, the emotional regulation scale, and the adaptation to school life scale. In order to find to identify how maternal parenting, emotional regulation were related with their adaptation to school life, Pearson correlation coefficients were used in the computation. To examine the effects of maternal parenting, emotional regulation on adaptation to school life, multiple regression analyses were conducted. To examine whether emotional regulation as a mediating variable in the process that maternal parenting is influencing children's adaptation to school life, hierarchical regression analyses were performed. The results of this study were summarized as follows. First, the analysis of the relationship of maternal parenting, emotional regulation with adaptation to school life shows that there is a significant positive correlation between maternal parenting, emotional regulation and adaptation to school life. Second, in the multiple regression analysis with maternal parenting and emotional regulation as a predictor and adaptation to school life as an outcome variable it has been shown that the emotional regulation were significant in adaptation to school life, but maternal parenting were not significant in adaptation to school life. The higher the emotional regulation is the better can children adapt themselves to school life. Third, the analysis on the mediating effects of emotional regulation in the relationship of maternal parenting and adaptation to school life showed that emotional regulation full mediates the relationship of maternal parenting with adaptation to school life.

• Advances in nano research
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• v.7 no.6
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• pp.443-457
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• 2019

In this investigation, dynamic and bending behaviors of isolated protein microtubules are analyzed. Microtubules (MTs) can be considered as bio-composite structures that are elements of the cytoskeleton in eukaryotic cells and posses considerable roles in cellular activities. They have higher mechanical characteristics such as superior flexibility and stiffness. In the modeling purpose of microtubules according to a hollow beam element, a novel single variable sinusoidal beam model is proposed with the conjunction of modified strain gradient theory. The advantage of this model is found in its new displacement field involving only one unknown as the Euler-Bernoulli beam theory, which is even less than the Timoshenko beam theory. The equations of motion are constructed by considering Hamilton's principle. The obtained results are validated by comparing them with those given based on higher shear deformation beam theory containing a higher number of variables. A parametric investigation is established to examine the impacts of shear deformation, length scale coefficient, aspect ratio and shear modulus ratio on dynamic and bending behaviors of microtubules. It is remarked that when length scale coefficients are almost identical of the outer diameter of MTs, microstructure-dependent behavior becomes more important.

• Journal of the Korean Society of Propulsion Engineers
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• v.26 no.5
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• pp.63-73
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• 2022

Investigation on operation of the test apparatus for the M4 semi-freejet tests with a full-scale vehicle model was carried out utilizing domestic facilities. An integrated design of the experimental apparatus and the vehicle model was obtained through iterative computational fluid dynamics (CFD) analysis. The test results showed that the M4 nozzle of the apparatus was fully expanded to provide required test conditions. It was also found that the intake of the vehicle model successfully started, and the corresponding shadowgraph images were recorded during the test. A variable nozzle of the model was set to adjust the back pressure of the model combustor, and wall-static pressures were measured to obtain the pressure distribution at the main locations of the model. The flame of torch ignitors and pilot fuel ignition were observed in a flame-holder of the combustor.

• Journal of Oriental Neuropsychiatry
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• v.21 no.4
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• pp.79-97
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• 2010

Objectives : The objective of this study is to investigate the effects of Jajun-maum-dom-movement program on the attention and hyperactivity of middle school students, Methods: Jajun-maum-dom-movement program was applied to 14 middle school students for 8 weeks, To measure the improvement of attention and decrease of hyperactivity, these tests were used - ADHD Diagnostic System(hereinafter ADS), Parent's Abbreviated Conners Rating Scale(hereinafter ACRS), Teacher's Korean ADHD Rating Scale(hereinafter K-ARS). For each variable in the 3 test methods, the results of before and after program were measured and then, the results were assessed by paired t-test, Interrelations between the resulted values of 10 variables were analyzed in these three groups: scores before program, scores after program, and change in scores before and after program, Among 10 variables, for variable showing significant difference by t-test, it was assessed by ANCOVA whether change in scores before and after program is affected by the grade and gender. Results: As for the changed score between before-the-program and after-the-program, in the ADS test, it was found that there is a significant effect in the "commission error" which is one of the indices showing the degree of hyperactivity, and "sensitivity(d')" which is one of the indices showing attention, and it was found that there is a significant effect in ACRS and K -ARSC total), Among the correlations of the 4 variables, "ACRS" and "K-ARSC total) ", which show the comprecessive criteria, have the positive correlation of significance in before-the-program, after-the-program and the changed score between before-the-program and after-the-program, However, there was no specific correlations among sub-variables about attention or hyperactivity, and in all of 4 variables, there was no significant degree of change according to grade or gender. Conclusions : As the results of assessment by ADHD Diagnostic System, Parent's Abbreviated Conners Rating Scale, Teacher's Korean ADHD Rating Scale to study the effects of Jajun-maum-dom-movement program on attention and hyperactivity, it is known that the program is helpful for improvement of attention and decrease of hyperactivity for the participated students.

• Journal of Korea Water Resources Association
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• v.54 no.5
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• pp.289-299
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• 2021

This study analyzes bifurcation characteristics of the Seolmacheon experimental catchment by extracting the shape variation of channel network due to variable scale of source basin or threshold area. As the area of source basin decreases, a bifurcation process of channel network occurs within the basin of interest, resulting in the elongation of channel network (increase of total channel length) as well as the expansion of channel network (increase of the source number). In the former case, the elongation of channel reaches overwhelms the generation of sources, whereas, in the latter case, the drainage path network tends to fulfill the inner space of the basin of interest reflecting the opposite trend. Therefore, scale invariance of natural channel network could be expressed to be a balanced geomorphologic feature between the elongation of channel network and the expansion of channel network due to decrease of source basin scale. The bifurcation structure of the Seolmacheon experimental catchment can be characterized by the coexistence of the elongation and scale invariance of channel network, and thus a further study is required to find out which factor is more crucial to rainfall transformation into runoff.

• Journal of Korean Academy of Nursing
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• v.34 no.6
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• pp.964-973
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• 2004

Purpose: This study was aimed to identify the major factors affecting performance in health promoting behaviors in women workers at small-scale industries. Method: This study was based on the Pender's Health Promotion Model. The subjects for this study were 251 women workers at 23 small-scale industries in Busan city. The data for this study was collected from July 15th to August 15th 2003 by structured questionaries, and were analyzed with ANOVA, t-test, Pearson' correlation coefficient, and multiple Regression in the SPSS/WIN 10.0. Result: The mean performance of the health promoting behavior was 2.56. The factors related to the performance of the health promoting behaviors were social support, marital status, status of owning a house, perceived barriers to action, working time, and self-efficacy, and they explained 58.4% of the variance of the health promoting behaviors. Conclusion: The mean performance of the health promoting behavior seemed to be low, and the most important variable related to health promoting behaviorsof women working at a small-scale industry was social support. Therefore, intervention programs to increase the social support for women worker need to be developed.

• 아동간호학회:학술대회논문집
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• 1997.11a
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• pp.35-47
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• 1997

Mothers with cerebral palsy children have much stress that is related to the care of children with cerebral palsy and to other household duties, and this state of the mother has an effect on the cerebral palsy child and on other household member. Mothers in such stressful situations use various coping patterns. The purpose of this study was as follows : to develop instruments that can be used for measuring the stress and coping patterns of mothers with cerebral palsy children, and to test a hypothetical model on the relationship between the mother's stress, her coping patterns and the variable affecting the stress and coping patterns. The results of this study can be summarized as follows : 1. The stress scale was composed of 44 items and Cronbach's ${\alpha}$ was .94, and the coping pattern scale was composed of 19 items and Cronbach's ${\alpha}$ was .80. The mean score of stress scale was 136.12 out of a total of 220, and the mean score of the coping scale was 72.87 in a total of 95. 2. In test of the hypothetical model, it was found that extra-care demand, the support of the husband, the degree of handicap, health status and self-esteem had statistically significant influence on the mother's stress(r=.285, -.262, -.133, -.126). And the support of the husband, formal support, informal support, and economic status were found to have statitically significant influence on the mother's coping patterns(r=.412, .178, .178, .138).

• Journal of Families and Better Life
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• v.6 no.1
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• pp.71-93
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• 1988

The purpose of this study is to investigate the realities of the husband's violence, to develop a scale to identify women who are victims of wife abuse and to provide evidence of the scale's validity. The Instrument entitled the Wife Abuse Inventory (WAI) and conflict Tactics Scale(CTS), are administered to 511 women who lives in Taegu area. The main results are as follows; 1) The CTS analysis shows the 42.5% of the sampled house wives are suffered minor violence and 9/0% are suffered violence form husband. 2) The WAI is factor analyzed to examine factor components within the scale. An examination of the rotated solutions suggested that WAI is composed 10 factors. These factor is labeled men's conception of supremency and aggression propensity, communication, economic difficulties and frustration, social activities, jealousy, children rearing, intimacy, family relationships in laws , affection, difference of culture. 3) an analysis of variance show the group mean score of the violence group and the mean score of the non-violence group on the WAI to be significantly different(P<.001). A discriminant analysis produce a significant discriminant function (P<.001). Using WAI scores as the discriminating variable, 81,15% of the violence and non-violence subjects are classified into their appropriate groups. This finding indicates that the WAI is a reliable device for screening violence and nonviolence group.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.26 no.1
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• pp.74-81
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• 2002

Combustion phenomena in a sub-millimeter scale combustor have been investigated. To evaluate scale effect on flame propagation characteristics, a cylindrical combustion chamber with variable depth was built in-house. The combustor was charged with premixed gas of hydrogen and air and ignited electronically. A piezo electric pressure transducer recorded transient pressure after the ignition. Measurements were made at different test conditions specified with chamber depth and initial pressure as parameters. Visual observation was made through a quartz glass window on top side of the combustion chamber using high speed digital video camera. From the pressure data, available work was estimated and compared with energy input required for stable ignition. The preliminary results suggested that the net thermal energy release is sufficient to generate power and enables a combustor of the size in the present study to be used as the energy source of a micro power devices .

• Korean Journal of Child Studies
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• v.25 no.6
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• pp.385-399
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• 2004

The study attempted to explore the dimensionality of mother's psychological well-being. The major purpose of the study was aimed at establishing the construct validity regarding the instrument of assessing mother's psychological well-being. Instrument for assessing psychological well-being was developed with 9 variables(sense of control, sense of achievement, sense of confidence, sense of acceptance, sense of intimacy, sense of assistance, sense of immersion, sense of hope, and sense of satisfacion) in 3 dimensions(sense of competency, sense of relation, and sense of improvement) with 4 rating scales of 102 items. After the scale development, the estimates of reliability for the 9-variable scales were Cronbach's ${\alpha}=.71{\sim}.90.$ The correlation between the two scales, Psychological Well-Being Index(Franklin, 1996) and Psychological Well-Being(Ryff & Keyes, 1995) was .21~25. The subjects were divided two groups by the score of the Mother's sense of Psychological Well-Being. And the group has hiher score in Mother's sense of Psychological Well-Being showed the higer score of Perceptions of Parental Role Responsibilities Scale(t=3.24, p=.002).