• Journal of the Korean Data and Information Science Society
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• v.25 no.4
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• pp.857-868
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• 2014

Data mining is the representative analysis methodology in the era of big data, and is the process to analyze a massive volume database and summarize it into meaningful information. Association rule technique finds the relationship among several items in huge database using the interestingness measures such as support, confidence, lift, etc. But these interestingness measures cannot be used to establish a causality relationship between antecedent and consequent item sets. Moreover, we can not know association direction by them. This paper propose causally confirmed association thresholds to compensate for these problems, and then check the three conditions of interestingness measures. The comparative studies with basic association thresholds, causal association thresholds, and causally confirmed association thresholds are shown by simulation studies. The results show that causally confirmed association thresholds are better than basic and causal association thresholds.

• Journal of the Korean Data and Information Science Society
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• v.25 no.2
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• pp.365-371
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• 2014

Association rule of the well-studied techniques in data mining is the exploratory data analysis for understanding the relevance among the items in a huge database. This method has been used to find the relationship between each set of items based on the interestingness measures such as support, confidence, lift, similarity measures, etc. By typical association rule technique, we generate association rule that satisfy minimum support and confidence values. Support and confidence are the most frequently used, but they have the drawback that they can not determine the direction of the association because they have always positive values. In this paper, we compared support, basic confidence, and three kinds of confidence measures useful for classification model building to overcome this problem. The result confirmed that the causal confirmed confidence was the best confidence in view of the association mining because it showed more precisely the direction of association.

• Korea journal of population studies
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• v.34 no.2
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• pp.135-162
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• 2011

Given the 4 contexts-parents, friends, teachers and community- of adolescents, this research verified the casual relationships between each contextual support and the suicidal impulse, and the gender difference. The 4-year longitudinal data(KYPS) collected from 3,697 adolescents were used in this study. Using the Autoregressive Cross-Lagged Model, the suicidal impulse was consistently present from the 3rd grade in middle school to the 3rd grade in high school with significant stability. Gender differences were founded in the effect of parental support among the 3rd grade in middle school. Also the negative effect of friends' support on the suicidal impulse among the first grade high school students. The effects were more stronger for girls than boys. Previous supports by teachers and community had no significant effects on later suicidal impulses. These results suggest that the study of suicidal impulse needs to examine the complex support system of multiple context layers.

• KEPCO Journal on Electric Power and Energy
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• v.3 no.1
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• pp.65-72
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• 2017

This study analyzed causal relationship between electricity consumption and economic output (GDP) for Korea from 2001 to 2014 employing the vector error-correction model estimation by manufacturing sector. The results of unit-roots tests show that all sectoral GDP and electricity consumptions were not stationary. And cointegration tests show that processed foods, Wood Pulp Paper, electricity apparatus, Precision Medical sectors had a linear combinations in the long run between electricity consumptions and economic growth. With respect to the direction of causality, manufacturing sector has a uni-directional running from economic output (GDP) to electricity consumption in short term. The results of study show that sectoral causal relation were different each other in short term and long term. These findings imply that electricity demand management policy focusing on efficiency improvement is necessary to minimize negative impacts on economic growth and to adopt suitable structural policies can induce energy conservation.

• The Journal of the Korea Contents Association
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• v.19 no.5
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• pp.306-315
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• 2019

The purpose of this study was to analyze empirically influential factors related to the recovery of people with a mental disorder and also the moderating effects of family resilience. For this purpose, the investigator developed a research model that took into consideration both the positive and negative elements of individual and social factors based on the ecological, psychological, social, and ecosystem perspectives in previous studies and checked their causal effects and the moderating effects of family resilience in statistical significance. The subjects include 112 clients at an institution for people with a mental disorder. Data was collected with an interview based on a structured questionnaire. Collected data was put to the multiple regression analysis. The analysis results show that there was statistical significance in self-esteem, social stigma, and social support excluding symptoms and that the moderating effects of family resilience had positive(+) synergistic effects only on self-esteem and social support. Based on these results, the study made proposals about practice strategies including the establishment of internal and external support systems to make an effective approach to recovery and the systemization of family resilience and supportive strategies to promote the smooth recovery of people with a mental disorder through the reinforcement of programs related to the confirmed positive elements of self-esteem and social support.

• Korean Journal of Social Welfare
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• v.62 no.4
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• pp.103-128
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• 2010

This study applied self-determination theory to investigate the relationships between volunteers' perception of supervisors' autonomy support, volunteering motivation, and persistence intentions among collegiate students. Collegiate volunteers(n=515) involved in volunteer activities completed measures of supervisors' autonomy support, 5 forms regulation, and persistence intentions. Bivariate correlations indicated that volunteer motivation demonstrated an ordered pattern of relationships, such that adjunct points along the regulatory continuum would be more positively associated with on another than distal points. Analyses using structural equation modeling revealed that supervisors' autonomy support was positively related to more autonomous motivation(intrinsic motivation and identified regulation), while was natively associated with amotivation. Amotivation was negatively related with persistence intentions, and more autonomous motivations(intrinsic and identified) predicted grater intentions to continue with volunteer activity for next 6 months. The findings are discussed in light of the self-determination theory.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.5
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• pp.133-140
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• 2017

This study was conducted to determine the casual relationship among family support, social support, workplace spirituality, and quality of life (QOL) for middle-aged, male office workers, as well as the effects of family support, and social support on their QOL with the mediation of workplace spirituality. The participants were 288 middle-aged, male office workers, and the data were collected from 14 October to 30 November, 2016, through questionnaires. The data were analyzed with descriptive statistics and Pearson's correlations using PASW 21.0, while the AMOS 18.0 program was used for structural equation modeling (SEM), and the fitness of the final model was determined using RMSEA .05, GFI .98, AGFI .94 and NFI .96. The results of this study can be summarized as follows. There were correlations between family support, social support, workplace spirituality, and QOL for the middle-aged, male office workers. Second, family support (${\beta}=.60$, p<.001) and social support (${\beta}=.47$, p<.001) had a direct effect on their workplace spirituality. Third, family support had direct (${\beta}=.12$, p=.002) and indirect (${\beta}=.10$, p<.001), while social support also had direct (${\beta}=.12$, p<.001) and indirect (${\beta}=.08$, p<.001) effects on their QOL. The findings also suggested that workplace spirituality had a partial mediating effect between the family support, social support, and QOL of the middle-aged, male office workers.

• Convergence Security Journal
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• v.17 no.2
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• pp.109-118
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• 2017

The study examines whether there is support for undergraduate students of Department of NCOs leadership needs and self-perceived any casualty, the purpose being placed to identify the cause-and effect relationship between student's behavior and these self-appointed leadership needs parameters. To study this end, the men and women college students Military major in Busan district using the convenience of the student sample extraction to extract the 362 students. Setting the model to achieve the object of the study, and then through a structural equation model (SEM) were studies a causal relationship among variables. Result on the basis of the research study model verification method as described above what is derived from this study were as follows. First, self-leadership is confirmed in the career planning of clarity on the impact of career beliefs centered strategies(+) target-oriented strategy(+), and independent self-reliance, check-centered strategies(+), constructive thinking strategies(+), ERA=centric strategy(+), in the natural course flexibility, compensation strategies(+), constructive thinking strategies(+) improve professional skills appeared to affect the check-centered strategies(+), ERA-centered strategies(+). Second, self-leadership is general satisfaction at the impact of major satisfaction natural reward strategies(+), the curriculum meets the natural reward strategies(+) target-oriented strategy(+) recognition satisfy the natural reward strategies(+) target-oriented strategy(+) appeared to affect this. Third, career beliefs Major General satisfaction in the impact on satisfaction Career Planning Clarity(+), an independent self-reliance(+), career flexibility(+)improve professional skills(+), the curriculum satisfies independent self-reliance(+), career flexibility(+) improve professional skills(+), the self-satisfied recognized independent trust(+), career flexibility(+), career planning clarity(+) it appeared to influence this.

• Journal of Digital Convergence
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• v.19 no.8
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• pp.385-396
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• 2021

The purpose of the study was to explore the process of experience of spinal stenosis, herniation of intervertebral disk patients with low back pain under non-surgical treatment. 10 participants attended in-depth individual interview. Data analyzed using the Grounded theory methodology of Corbin and Strauss(2015). A core category emerged as 'Compromise with my body in the swamp of pain'. Central phenomenon was 'Constrained life by severe pain'. The process of the low back pain experience included three phases: 'cognition', 'coping', and 'adaptation'. This finding will be helpful for understanding the low back pain experience and be as fundamental data as for developing and applying nursing intervention program according to the low back pain experience process.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.543-551
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• 2019

The purpose of this study was to examine the fitness of a Path model to represent relations between stress, social support, depression, and suicidal ideation in middle-aged males. The participants were 236 middle-aged males, and data were collected from April 11 to June 1, 2018. The analysis was performed using descriptive statistics and Pearson's correlations in PASW Ver. 21.0, and AMOS Ver. 18.0 (a statistical structural equation modeling program), fitness characteristics of the final model were RMSEA 0.05, GFI 0.98, AGFI 0.95, and NFI 0.98. The major study results were as follows. First, stress had a direct effect on depression and drinking, and social support had a direct effect on depression. Second, stress and social support both directly affected suicidal ideation. Results also suggested depression had partial mediating effects on relations between stress, social support, and suicidal ideation. We suggest a program be devised to reduce suicidal ideation by middle-aged males. It is hoped our results will provide basic data for future studies.