• Korean Journal of Psychosomatic Medicine
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• v.24 no.2
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• pp.140-145
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• 2016

Objectives : Parental behavior is related to personality development and ego resilience in the childhood. The objective of this study was to identify the influence of parental behavior on ego resilience in Korean middle school student. Methods : Subjects were selected based on stratified multi-stage cluster sampling in Korea youth panel study 2013(Boy : N=1,075, Girl : N=1,033). We used Parental behavior inventory(PBI) to estimate parental behavior and the Ego resilience scale to estimate ego resilience. The data were statistically analyzed using a Pearson correlation analysis and regression analysis with the statistical package for the social sciences(SPSS). We considered differences to be significant when p<0.05. Results : A regression analysis showed that rational explanation, affection, Interest and inconsistency of the parental behavior domains influence ego resilience. Also rational explanation, affection and Interest of the parental behavior domains showed a significant positive correlation with ego resilience(r=0.24, r=0.31, r=0.22, p<0.01). In contrast to early childhood studies, inconsistency showed no significant correlation. Conclusions : Adolescents who had taken more rational explanation, interest and affection from their parents were more likely to have higher ego resilience. However, inconsistency of parental behavior showed no correlation with ego resilience of adolescents, which means that they are affected by several other factors than parental behavior. This study would be a basic research that could be a help to psychosocial approach in pediatric psychiatry.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.34 no.5
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• pp.263-270
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• 2021

In this study, a reliability-based design optimization of a 130-m class fixed-type offshore platform, to be installed in the North Sea, was carried out, while considering environmental, material, and manufacturing uncertainties to enhance its structural safety and economic aspects. For the reliability analysis, and reliability-based design optimization of the structural integrity, unity check values (defined as the ratio between working and allowable stress, for axial, bending, and shear stresses), of the members of the offshore platform were considered as constraints. Weight of the supporting jacket structure was minimized to reduce the manufacturing cost of the offshore platform. Statistical characteristics of uncertainties were defined based on observed and measured data references. Reliability analysis and reliability-based design optimization of a jacket-type offshore structure were computationally burdensome due to the large number of members; therefore, we suggested a method for variable screening, based on the importance of their output responses, to reduce the dimension of the problem. Furthermore, a deterministic design optimization was carried out prior to the reliability-based design optimization, to improve overall computational efficiency. Finally, the optimal design obtained was compared with the conventional rule-based offshore platform design in terms of safety and cost.

• Journal of vocational education research
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• v.37 no.2
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• pp.77-99
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• 2018

The purpose of this study was to investigate the employment possibility of the humanities college graduates to science and engineering field occupations, and to identify the occupational characteristics related to employability perceived by workers. To do this, basic statistical analysis, correlation analysis, and hierarchical multiple regression analysis were conducted using the data surveyed on 2,600 workers in the science and engineering field in the 'Research on Korean Occupational Index for Career and Employment Service(2017)'. The main results are as follows. First, the employment possibility of the humanities college graduates to science and engineering field was low, except for some occupations in the information communication, manufacturing and processing fields. Second, the occupational characteristics affecting the employment possibilities of the humanities college graduates to science and engineering field are as follows: low importance of the final education, low importance of the major, low importance of qualification, high importance of vocational training, easy to return after the career break, high level of gender equality, high level of pleasant work environment, high employment retention, easy to self-employment or start-up, and increasing number of jobs. Based on the results of this study, to support employment of humanities college graduate from the occupational aspect, it is necessary to find out some detailed jobs or to develop convergence occupations. At this time, it is possible to utilize the occupational characteristics factors that increase the employment possibility of humanities college graduates to science and engineering occupations.

• The Journal of the Korea Contents Association
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• v.19 no.4
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• pp.581-597
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• 2019

This study was designed to examine the factors effecting the positive psychological capital of social workers at senior welfare centers on job burnout. The subjects were 350 social workers who care for the elderly at senior welfare centers in Seoul and Gyeonggi-do. Based on a total 344 data collected and using the SPSS 22.0 statistical program. Reliability test, frequency analysis, t-test, One-way ANOVA, correlation analysis and Multiple regression analysis were performed. The results showed that positive psychological capital had a statistically significant negative effect (-) on emotional exhaustion, a sub variable of job burnout and depersonalization. The effect of sub-variables of positive psychological capital on emotional depletion and depersonalization was in order of optimism> resilience> hope> self-efficacy. Lastly, it was found that positive psychological capital had a statistically significant negative effect(-) on decreased sense of accomplishment. The effect of sub-variables of positive psychological capital on decreased sense of accomplishment was in order of optimism> hope > self-efficacy > resilience. The effect of positive psychological capital on decreased sense of accomplishment was not significant depending on sub-variables. Based on the results of this study, suggestions, the limits of this study, and future directions for research were presented for the improvement of positive psychological capital, which is confirmed as a factor to reduce the job burnout of social workers.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.7
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• pp.945-952
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• 2018

Recently, bass fishing has become a marine leisure sport in Korea. There are 4 major fishing associations in Korea, and each association holds 10-15 tournaments each year. However, supply of 17 ft bass boats, which are preferred in leagues, depends 100 % on imports. In this study, we have derived the main specifications to develop the initial hull forms of a 18.5ft bass boat through statistical analysis based on mothership data. In addition, CFD numerical analysis was carried out according to deadrise angle and longitudinal center of gravity, which strongly influenced the resistance and planing performance. For numerical analysis, design speed was set to $Fn=3.284 (Re=9.858{\times}10^7)$, the deadrise angle was set from 12 to $20^{\circ}$, and the longitudinal center of gravity was set in the range of 0 to $8%L_{wL}$ from the center of buoyancy to the stern. Based on the numerical results, we first set the range of these factors by resistance performance and immersion keel length. Furthermore, using a correlation graph of Savitsky's Drag-Lift ratio, we derived the deadrise angle ($14-16^{\circ}$) and longitudinal center of gravity ($4-6%L_{wL}$).

• Journal of Environmental Impact Assessment
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• v.28 no.3
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• pp.201-214
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• 2019

The concept of ecosystem services is important for the effective management of regional ecological resources. Multiple ecosystem services provided by regional ecosystems are represented as ecosystem service bundles, which define the co-occurrent ecosystem services in a specific region. Bundles provide useful information to identify regional characteristics of ecosystem services and categorize sub-regions with similar patterns of ecosystem service provision. We assessed eleven ecosystem services using modeling approaches and statistical data and produced bundles of cities in Gyeonggi-do.We also conducted principal component analysis and cluster analysis to categorize these cities according to the characteristics of ecosystem services. The results indicated that the cities in Gyeonggi-do were categorized into three groups depending on the types of provision,regulation, and cultural services, and were designated as urbanized, urban-forest, agriculture, or forest cities. These groups were influenced by land use patterns reflecting regional social-environmental features. The results provide useful information for identifying regional ecosystem services and facilitate decision-making in regional ecosystem service management.

• Journal of Digital Convergence
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• v.17 no.7
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• pp.225-233
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• 2019

The purpose of this study is to investigate the affecting factors on perception of marriage needs in 20-30s unmarried workers. This study used raw data from the survey on the actual social and economic conditions of the youth of 2016. Among the 2,534 subjects, 904 unmarried workers in their 20s and 30s were included in the analysis. Dependent variables were marriage needs, and independent variables were age, sex, height, weight, education level, monthly income, parents' economic level, and health-related variables were self-rate health, stress, regular exercise, and life satisfaction included. Statistical analysis was performed binominal logistic regression analysis. In results, there were no factors influencing perception of marriage needs in 20s men, and Education was a predictor in 20s women. In 30s men, the more regular exercise, the less the monthly income, the more positive the perception of marriage needs was. In the 30s women, the better the self-rate health, the more positive the perception of marriage needs was. These findings suggest that health may affect the marriage perception of 30s unmarried workers.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.3
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• pp.353-365
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• 2019

The purpose of this research is to guide the development of the program for the Directive Individual Sand Box Play for the improvement of the self-esteem of children of the dissolved multicultural families. For quantitative analysis data, the scores from before and after the program were compared. The SPSS 18.0 Package was used for statistical analysis. For the qualitative analysis, the linguistic changes in B children during the session were collected and analyzed using the self-expression scale. The research period lasted for around 3 months from February 2017 to May 2017, for a total of 12 sessions which included individual activities, 1 session of group activities, and 1 night and 2 days of family camp activities featuring a total of 6 children. The main results of this research include quantitatively through the program of the Directive Individual Sand Box Play in relation to the social self-esteem capability at z=-2,200 on the level of p<.05, the significant difference was shown. Qualitatively, positive expression increased as sessions proceeded and negative expression reduced regarding the linguistic expressions by session of children B. This means that the method of the Directive Individual Sand Box which presents the topic and in addition, the process of visiting the house of a child which is the most secure environment had shown the effectiveness that increases the improvement of the self-esteem of the children of the dissolved multi-cultural families. According to the diverse special characteristics of clients, a preliminary basic framework for the mobile individual sand box program through the directive approach method will be prepared.

• Journal of Wetlands Research
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• v.20 no.4
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• pp.314-321
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• 2018

In order to quantify nonpoint source pollution, it was proposed to sample at regular intervals of 1 hour for the first 24 hours of storm runoff process by National Institute of Environmental Research for the mixed landuse watershed. However, high frequency sampling requires intensive laboratory analysis and labor costs. In order to investigate the effect of longer sampling interval on the load estimation compared to the 1 hour sampling method, analysis was conducted using monitoring data from rural subwatershed, urban subwatershed, and outlet of the Pungyeongjeongcheon watershed. Statistical analysis revealed that mean of load estimation was not significantly different up to 4 hour sampling frequency. However, 3 hour sampling interval was found to be appropriate for the BOD and TP when it is judged that 10% or less of the difference in loading amount between the 1 hour and other sampling interval is reasonable. The results of this study can be used to conduct an effective monitoring system.

• Journal of Technology Innovation
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• v.27 no.2
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• pp.73-98
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• 2019

This study aims to contribute to the improvement of the patent activity of small and medium-sized enterprises in the future by proposing five strategies for enhancing customized patent activity for small and medium-sized enterprises under the assumption that patent application affects firm performance. The subjects of this study were 25 years of active patent activity, using patent activity statistics for 5 years from 2010 and statistical data of business performance based on 2014. The research procedure was conducted in the order of DEA-BCC efficiency analysis, patent activity analysis, and patent portfolio analysis, and then propose a strategy to improve patent activity. As a result of the research, it was confirmed that 5 industries with high patent activity and IRS type have a substantial effect on improving corporate performance as an industry with high patent efficiency. On the other hand, there are 12 industries in the form of IRS/DRS, and 8 industries with low patent activity, DRS, CRS/IRS mixed type and IRS, and that the efficiency of the patent may vary depending on the characteristics of each industry.