• Journal of Family Resource Management and Policy Review
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• v.15 no.1
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• pp.29-49
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• 2011

Social capital theory provides a robust framework for analyzing economic well being. The purpose of this study was to investigate the effects of social capital on the economic satisfaction of retirees in Korea. The data from the first wave of KLoSA(Korean Longitudinal Study of Aging) were used(n=1,628). SPSS 12.0 was used for descriptive statistics and multiple regression analysis. The major findings were as follows: First, after controlling for gender, age, region, housing tenure, and personal income, the social capital of the retirees, including cognitive social capital(trust and reciprocity) and structural social capital(emotional and economic familial support, and a well-developed social network), contributes to increases in their economic well-being. Second, the degree of effect social capital has on well-being varied by gender and age; the effect was also different according to gender, regardless of the person's age. These empirical results provide a basis for the institution of policies that help bolster economic wellbeing for retirees by creating conditions that increase social capital in this group.

• Korean Journal of Human Ecology
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• v.24 no.6
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• pp.783-793
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• 2015

The purpose of this study was to investigate the effect of Parenting Attitude, Self-esteem, and Peer Attachment on Emotion Problem. The study is based on data from first wave of 'Korean Child Youth Panel Survey 2010(KCYPS)' and the subjects of this survey were 2,098 1st grade junior middle school students. To measure the variables, this study used such scales as the parenting attitude scale, self-esteem scale, and peer attachment scale and emotional problem scale. The data were analyzed using descriptive statistics, Pearson's correlation and structural equation modeling analysis. Results of structural equation modeling with data indicated that hypothesized structural equation model produced a good fit but, no direct effect between negative parenting attitude and peer attachment. The self-esteem have mediating effect between parenting attitude and peer attachment, emotion problem. The peer attachment have mediating effect between positive parenting attitude and emotion problem but, did not have mediating effect between negative parenting attitude and emotion problem. The implications for counseling and suggestions for future research are discussed.

• The Korean Journal of Health Service Management
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• v.10 no.1
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• pp.143-154
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• 2016

Objectives : The aim of this study was to validated the effectiveness of the information gap in work and daliy life satisfaction. Additionally, this study attempted to verify the mediating effect of self-esteem. Methods : The study examined 327 students who participated in a study on the PSWCI 1st Wave by KCOMWEL. Data were analyzed through descriptive statistics using the reliability test in SPSS 22.0 Ver. Moreover, hypothesis testing was analyzed with covariance based on structure equation modeling (CB-SEM) using Amos 21.0 Ver. Results : The low information gap has a positive effect on satisfaction with work and daily life. Additionally, self-esteem also has a positive effect on each satisfaction measure. However, self-esteem does not have a mediating effect between information gap and each satisfaction measure. Conclusions : The results of the study found the factor of effect on effect factor on beneficiary's satisfaction of industrial accident compensation insurance. Therefore, new ways need to be found that reduce the information gap and increase self-esteem.

• Human Ecology Research
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• v.53 no.1
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• pp.107-117
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• 2015

The purpose of this study was to examine the general characteristics and the variety of family life experiences related to the life satisfaction of multicultural families with school-aged children. Data were drawn from the first wave of the Korean Children and Youth Panel Survey conducted in 2010 and developed by the National Youth Policy Institute. Further, the sample for this study consisted of 95 multicultural families who met the requirements. The data were analyzed by descriptive statistics, the t -test, analysis of variance, and multiple regression using SPSS ver. 18.0. The main results showed that family life experiences that were made up of 5 domains, specifically time, leisure, household economy, health, and child education had a broad range of levels. In addition, family life experiences differed according to the general characteristics of multicultural families with school-aged children, such as mother's employment status, number of children, father's employment status and education level, and family composition. Lastly, their life satisfaction was significantly predicted by the father's employment status and health, children's age, children's education, and leisure in the order of significance. These findings suggested the need to expand the social intervention range for multicultural families with school-aged children, particularly in terms of family leisure and children's school life adaptation.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.42 no.1
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• pp.128-139
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• 2017

Vehicular Ad hoc Network (VANET) is one of technologies to realize various ITS services for safe driving and efficient traffic control. However, data delivery in VANETs is complicated due to high mobility and unreliable wireless transmission. In this paper, we develop a novel forwarding scheme to deliver packets in a reliable and timely manner. The proposed forwarding scheme uses traffic statistics to predict the encounter of two vehicles, and optimize its forwarding decision by taking into consideration the probability of successful transmission between them at the encounter place. We evaluate our scheme through simulations and show that our proposed scheme provides reliable data delivery in VANETs.

• Journal of Power System Engineering
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• v.11 no.1
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• pp.98-106
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• 2007

This paper presents a statistical prediction procedure for the propeller racing of ships with twin screw propellers sailing in ocean waves. The propeller racing is one of the most important factors of seakeeping qualities in relation to the safety of main engine and shafting system. It is especially significant key word for designing the twin-screw-propeller-type ship in view of allowable maximum propeller diameter etc.. In former studies, the propeller racing generally means the situation (propeller exposed) in which the relative motion amplitude between ship hull and wave surface would exceed a depth of point in rotary disk propeller. Therefore, it seems that the magnitude of the amplitude and its exceeding frequency have been examined as a principal subject of study as usual. However, the time during which the amplitude exceeds a depth of point must be also one of most important factor affecting the trend of propeller racing. This paper proposes a simply practical method for estimating the time lasting of exposed propeller related to twin screw propeller racing in rough confused seas on the basis of the statistics. Then, it is confirmed that the practical method is useful and convenience for considering the propeller racing in the stage of the basic design.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.6 no.2
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• pp.150-156
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• 1994

Shoreline change due to the littoral drift in Suyeong bay, especially the Gwanganri and Haeundae beaches, was investigated. Average monthly frequency. speed. and direction of winds blowing from between east and south for the last 15 years were analysed, and offshore significant waves were hindcasted using the JONSWAP model. Wave refractions, shoaling, and breaking weir also investigated for the calculation of littoral drift. At the Gwanganri beach major longshore transport of sands occurs from the southwest to the northeast and the shoreline seems to advance in the northeast while it recedes in the southwest. At the Haeundae beach the sands mainly move from the east to the west and the shoreline retreats in the east and advances in the west.

• Nuclear Engineering and Technology
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• v.49 no.6
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• pp.1157-1164
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• 2017

The Monte Carlo criticality simulation of decoupled systems, as for instance in large reactor cores, has been a challenging issue for a long time. In particular, due to limited computer time resources, the number of neutrons simulated per generation is still many order of magnitudes below realistic statistics, even during the start-up phases of reactors. This limited number of neutrons triggers a strong clustering effect of the neutron population that affects Monte Carlo tallies. Below a certain threshold, not only is the variance affected but also the estimation of the eigenvectors. In this paper we will build a time-dependent diffusion equation that takes into account both spatial correlations and population control (fixed number of neutrons along generations). We will show that its solution obeys a traveling wave dynamic, and we will discuss the mechanism that explains this biasing of local tallies whenever leakage boundary conditions are applied to the system.

• Journal of Convergence for Information Technology
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• v.9 no.6
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• pp.97-103
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• 2019

This study is to find ways to improve the life satisfaction of people of disability through disability acceptance and self-efficacy. 1,505 out of 4,400 of Penal Survey of Employment for the Disabled 2nd Wave were applied for the study. Regression analysis, descriptive statistics and correlation analysis by SPSS 23.0 were applied. The study show that the disability acceptance had a positive effect on self-efficacy and life satisfaction. Self-efficacy influenced positive effect to life satisfaction and played a mediating role between disability acceptance and life satisfaction. Base on the result, this study made suggestions for necessity to operate rehabilitation and Psychological cognition integral programs and to find and attend the various programs for people of disability.

• Korean Journal of Childcare and Education
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• v.16 no.6
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• pp.105-122
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• 2020

Objective: The study aimed to examine the impact of a supportive school environment on children's prosocial behavior by investigating the sequential mediating effects of children's self-esteem and happiness. Methods: Results of the study were obtained by analysing data collected from 633 nine-year-old children in the 10th wave of the Panel Study on Korean Children(2017). The data were analyzed by descriptive statistics, correlation analysis and significance of mediated pathways using SPSS 23.0 and PROCESS macro 3.3. Results: First, children's self-esteem did not have mediational effects with respect to a supportive school environment and children's prosocial behavior. Second, children's happiness had mediational effects with respect to a supportive school environment and children's prosocial behavior. Lastly, a supportive school environment affects children's self-esteem, which affects children's happiness, thereby promoting children's prosocial behavior. Conclusion/Implications: In order to promote children's prosocial behavior, we should put emphasis on developing a supportive school environment, and increasing children's self-esteem and happiness. It is important that teachers treat children and classmates treat each other with a warm attitude so that they can value themselves and feel happiness in their lives.