• Research in Community and Public Health Nursing
• /
• v.24 no.3
• /
• pp.255-263
• /
• 2013

Purpose: This study examined the fitness of a path model for the relationship among daily life stress, problem of life, social support, depression, and suicidal ideation in adolescents. Methods: The subjects consisted of 247 adolescents. Data were collected through self-report questionnaires. The data were analyzed by the SPSS and AMOS programs. Results: Daily life stress, problem of life, social support, and depression showed direct effects on suicidal ideation in adolescents, while daily life stress and problem of life showed indirect effects on suicidal ideation in adolescents. Daily life stress and problem of life showed direct effects on social support and depression in adolescents. The hypothetical path model of adolescents' suicidal ideation was proven correct. Conclusion: Based on the outcomes of this study, it is necessary to design an intervention program that emphasizes the reduction of daily life stress, problem of life, depression and enhancement social support in order to prevention adolescents' suicidal ideation.

• Bulletin of the Korean Mathematical Society
• /
• v.35 no.1
• /
• pp.33-43
• /
• 1998

Matlis posed the following question in 1958: if N is a direct summand of a direct sum M of indecomposable injectives, then is N itself a direct sum of indecomposable innjectives\ulcorner It will be proved that the Matlis problem has an affirmative answer when M is a multiplication module, and that a weaker condition then that of M being a multiplication module can be given to module M when M is a countable direct sum of indecomposable injectives.

• Korean Journal of Child Studies
• /
• v.35 no.4
• /
• pp.179-198
• /
• 2014

The main purpose of this study was to examine direct and indirect effects of mothers' depression on preschoolers' externalizing problem behaviors. A total of 155 mothers with preschoolers aged 3 and 4 years (83 boys and 72 girls) living in Seoul participated in this study. Mothers completed questionnaires on mothers' depression, parenting behavior, and preschoolers' externalizing problem behaviors. Direct and indirect pathways from mothers' depression to preschoolers' externalizing problem behaviors were analyzed using Structural Equation Modeling (SEM). First, it was revealed that mothers' depression did not directly affect preschoolers' externalizing problem behaviors. Second, mothers' depression indirectly influenced preschoolers' externalizing problem behaviors through mothers' parenting behavior. Mothers who reported higher levels of depression showed less warmth/acceptance and more rejection/restriction towards their children, which led to higher levels of preschoolers' externalizing problem behaviors. These findings emphasize the importance of positive parenting by mothers in reducing preschoolers' problem behaviors.

• Journal of the Korea Convergence Society
• /
• v.9 no.12
• /
• pp.495-507
• /
• 2018

This study was done to develop and validate a path model for the causal relationship of nursing information literacy competency and problem solving, self-direct learning, and clinical performance ability of nursing students. Subject were 208 nursing students in the fourth grade of nursing school. Data were collected from June 4 to June 18, 2018. The nursing information literacy competency of nursing students showed direct effects on problem solving ability (${\gamma}=.70$, p<.001) and direct effects on self-directed learning ability (${\gamma}=.53$, p<.001). Nursing information literacy competency showed direct (${\gamma}=.31$, p<.001) and indirect effects (${\gamma}=.31$, p=.007) on clinical performance ability. These variables explained for 46.2% of clinical performance ability. Therefore, it is recommended to develop an education program that can enhance the nursing information literacy competency for improving the problem solving, self-directed learning, and clinical performance ability of nursing students.

• Journal of Korean Academy of Nursing
• /
• v.48 no.2
• /
• pp.195-207
• /
• 2018

Purpose: The purpose of the study was to develop and test a model for predicting problem gambling in speculative game users based on Blaszczynski and Nower's pathways model of problem and pathological gambling. Methods: The participants were 262 speculative game users recruited from seven speculative gambling places located in Seoul, Gangwon, and Gyeonggi, Korea. They completed a structured self-report questionnaire comprising measures of problem gambling, negative emotions, attentional impulsivity, motor impulsivity, non-planning impulsivity, gambler's fallacy, and gambling self-efficacy. Structural Equation Modeling was used to test the hypothesized model and to examine the direct and indirect effects on problem gambling in speculative game users using SPSS 22.0 and AMOS 20.0 programs. Results: The hypothetical research model provided a reasonable fit to the data. Negative emotions, motor impulsivity, gambler's fallacy, and gambling self-efficacy had direct effects on problem gambling in speculative game users, while indirect effects were reported for negative emotions, motor impulsivity, and gambler's fallacy. These predictors explained 75.2% problem gambling in speculative game users. Conclusion: The findings suggest that developing intervention programs to reduce negative emotions, motor impulsivity, and gambler's fallacy, and to increase gambling self-efficacy in speculative game users are needed to prevent their problem gambling.

• Korean Journal of Childcare and Education
• /
• v.15 no.2
• /
• pp.59-76
• /
• 2019

Objective: The purpose of this study was to analyze the structural relationship and influence of parents' family interaction, parenting efficacy, and child internalizing and externalizing problem behaviors. Methods: 1,418 children and their parents, and survey data from a panel study on Korean children (2014), were used to analyze the structural equation model. Results: First, the mother's family interaction had direct influence on their parenting efficacy, as well as their child's internalization and externalization. Second, the father's family interaction had a direct influence only on the internal problem behaviors of the child, and child external problem behaviors were influenced through the father's parenting efficacy. Third, parenting efficacy mediated the effects of family interaction on the problem behavior of children. Especially, the father's family interaction was found to affect child variables through the mother's parenting efficacy. Finally, the internalizing problem behaviors of the child mediated the effects of the parents' family interaction and parenting efficacy on child externalizing problem behaviors. Conclusion/Implications: The results of this study are significant in that the factors of father, mother, and child are interrelated, and that parent interaction has varying influence on the problems of their children.

• Korean Journal of Child Studies
• /
• v.29 no.5
• /
• pp.133-150
• /
• 2008

In this study of the influence of marital conflict and of children's temperament and emotion regulation on problem behavior, 194 mothers of 3- to 5-year-old children responded to the O'Leary- Poter Scale(1980), the Emotionality, Activity and Shyness scale(Buss & Plomin, 1984) and the Emotion Regulation Checklist(Shields & Cicchetti, 1997); teachers rated children's behavior on the Problem Behavior Questionnaire(Behar & Stringfield, 1974). Data were analyzed by independent t-tests, correlations, and multiple regressions. Results demonstrated that shyness, activity, and emotion regulation had direct effects on hostile-aggressive behaviors. Shy temperament had a direct effect on fearful-anxious behavior. Both marital conflict and temperament influenced hostile-aggressive behaviors indirectly through emotion regulation, implying a crucial role of emotion regulation in preschoolers' social development.

• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 2005.05a
• /
• pp.59-71
• /
• 2005

In this paper we address a design problem for hub and spoke transportation networks and then consider a capacitated hub locations problem with direct shipment (CHLPwD). We determine the location of hubs, the allocation of nodes to hubs, and direct shipment paths in the network, with the objective of minimizing the total cost in the network. An evolutionary algorithm is developed here to solve the CHLPwD. To do this, we propose the representation and the genetic operators suitable for the problem and adopt a heuristic method for the allocation of nodes to hubs. To enhance the search capability, problem-specific information is used in our evolutionary algorithm. The proposed algorithm is compared with the heuristic method in terms of solution quality and computation time. The experimental results show that our algorithm can provide better solutions than the heuristic.

• Journal of Integrative Natural Science
• /
• v.9 no.1
• /
• pp.67-71
• /
• 2016

The university president direct election system in Korea had begun in 1987 as a movement of college democratization in the 1980s after 6.29 Declaration. Since then, many national/private universities had adopted the election system. However, it has posed many problems and it caused a sharp division of opinions between those who approve and disapprove the direct election system. Since 2005, the government has made official of the reformation and/or abolition of the university president direct election system, and has kept pushing for universities to give up the direct election system. Now, only 3 or 4 universities hold on to the system, and many universities have changed into the indirect election system. In the indirect election, a key is the composition of president nomination committee, which confirms the university members's variety. Many universities adopting the indirect election system have used simple random sampling, like drawing lots, to compose the president nomination committee. However, drawing lots has a problem that it has large possibility of composing a biased committee. This research suggests systematic sampling as an alternative to drawing lots. A numerical analysis was conducted using a data of a university in which the indirect election was implemented recently. The drawing lots gave the biased nomination committee. On the other hand, the systematic sample improves the problem and confirms more the variety of all members.

• Journal of Institute of Control, Robotics and Systems
• /
• v.10 no.3
• /
• pp.273-279
• /
• 2004

This research is concerned with the development of an Internet-based robot system, which is insensitive to the unpredictable internet time delay. For this purpose, a simple mobile robot system that moves in response to the user s direct control on the internet has been developed. The time delay in data transmission is an important problem for the construction of this kind of system. Therefore, the PPS (Position Prediction Simulator) is suggested and implemented to compensate for the time delay problem of the internet. The simulation and experimental results show that the distance error can be reduced using the developed PPS.