• Journal of Digital Convergence
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• v.14 no.9
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• pp.73-87
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• 2016

The purpose of this study is to investigate the cultural difference between eastern and western culture in the online community in view of Hofstede dimensions of national culture through social network analysis. And this study tries to interpret the cultural dimensions by using social network indexes. The results show every cultural dimension offered conflicting results except uncertainty avoidance. The eastern culture shows individualism, and low power distance compared to western culture in the online community. Moreover the communication speed of eastern culture is faster than western culture. But eastern culture shows high uncertainty avoidance in the online community similar to an offline culture. This results of this study show that because of certain differences between the offline and online culture, the typical framework we use to analyze offline culture should not be applied to analyze online culture. Therefore we believe that the most important contribution of this study should be related with the finding that we need very different approach to be able to correctly understand the prevalent culture in the online community than the one that we use in the offline community.

• Journal of Digital Convergence
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• v.18 no.8
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• pp.321-330
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• 2020

This study was conducted to provide the basis for the establishment of various youth policies by analyzing and validating the mediated effects of ego resilience on the impact of adolescents' self-rated health on life satisfaction. The population consisted of a nationally representative sample of adolescents(n=1,979) in high school first grade student who completed the Korean Children and Youth Panel Survey(KCYPS) in 2016. The study analyzed the data by descriptive analysis, t-test, ANOVA, Pearson's correlation coefficients and path modeling, using the SPSS and AMOS program. The result is following; Self-rated health has significant effects of ego-resilience(β=.26, p<.05). Self-rated health(β=.18, p<.05) and ego-resilience(β=.45, p<.05) have shown significant implications for life satisfaction. In addition, ego-resilience have been shown to be partial mediation effect between Self-rated health and life satisfaction. The results revealed that the adolescents who scored high on self-rated health were better the life satisfaction, and ego-resilience partially mediated the relationship between self-rated health and life satisfaction in adolescents. In order to increase the life satisfaction for adolescent, it was confirmed that a multi-dimensional approach is needed to consider the self-rated health as well as self-resilience.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.6
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• pp.1283-1293
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• 2014

In ubiquitous environment, data are changing rapidly and new data is coming as times passes. And sometimes all of the past data will be lost if there is not sufficient space in memory. Therefore, there is a need to make rules and combine it with new data not to lose all the past data or to deal with large amounts of data. In making decision trees and extracting rules, the weight of each of rules is generally determined by the total number of the class at leaf. The computational problem of finding a minimum finite state acceptor compatible with given data is NP-hard. We assume that rules extracted are not correct and may have the loss of some information. Because of this precondition. this paper presents a new approach for refining rules. It controls their weight of rules of previous knowledge or data. In solving rule refinement, this paper tries to make a variety of rules with pruning method with majority and minority properties, control weight of each of rules and observe the change of performances. In this paper, the decision tree classifier with extended data expression having static weight is used for this proposed study. Experiments show that performances conducted with a new policy of refining rules may get better.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.197-207
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• 2013

Necessity of smart work that can change environment of working in organizations has been emphasized. Lots of organizations, however, wish to do work with smartness through adoption of smart work technologies, those are not sure whether smart work will be successful or not till now. Especially, viewpoints of leaders concerning efficiency and effectiveness of smart work who operate the organizations may be different in many circumstances such as industries, characteristics of work, etc. Therefore, hopefully, this research want to investigate whether differences among leader and non-leader group, tendencies of personal leadership styles in work exit or not by empirical and exploratory approach. Totally, 118 questionnaires had been collected and performed test of mean difference between groups. As a result, some items such as working place, working methods, flexible time and tension of smartwork showed significant differences between level of leadership styles and non-leader and leader groups. And, futhermore, from this research I believe that we can have a few insights for successful smart working environment in organizations.

• Journal of Digital Convergence
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• v.15 no.2
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• pp.485-491
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• 2017

Child friendly cities are to be prepared to create a community environment that allows children to live happily when children's rights are created when the environment in which children's rights are guaranteed is created. Therefore, this study examined the relationship between children's rights and happiness and explored what needed to be done to build child friendly cities for children. For this purpose, 1,000 elementary and middle school students in W district with the certification of child friendly cities were surveyed and analyzed. From the results of this study, first, elementary students were more aware of children's rights than middle school students. Second, children's rights affecting happiness appeared as health, social services, and educational environment. Third, children's rights affecting happiness were found to vary according to the level of school. Housing, safety and protection, and educational resources were important for elementary school students, and health and social services, and safety and protection were important for middle school students. Based on the results of this study, this study suggested that multifaceted intervention and approach should be considered for various aspects of health, welfare, education, safety, etc. to build child friendly cities.

• Journal of Digital Convergence
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• v.19 no.9
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• pp.105-114
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• 2021

The paper investigates a mediating effect of job embeddedness in the influence of positive psychological capital on organizational citizenship behavior(OCB) for members of medical institutions. The members include medical doctors, nurses, medical technicians, health administrative staffs, and other medical service staffs of hospitals in Daejeon City, Chungcheongnam-do, Chungcheongbuk-do, and Sejong City. Using 453 questionnaires for hypothesis tests, the main results are as follows. Firstly, positive psychological capital exerts a significantly positive effect on OCB. Secondly, the fit and links of job embeddedness turn out to have a significant and positive effect on OCB, whereas the sacrifice does not have statistically significant effect on it. Thirdly, while the fit and links of job embeddedness appear to have mediating effects between positive psychological capital and OCB, the sacrifice of it does not exert a mediating effect. The findings thus suggest that we need a new approach to the role of job embeddedness in the positive impacts of positive psychological capital on OCB through the fit and links of job embeddedness. Furthermore, organizations need to focus on key elements in the application of job embeddedness.

• Journal of Digital Convergence
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• v.17 no.7
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• pp.215-224
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• 2019

The objective of study was to identify perceived medication administration Competence of senior nursing students. A total of 128 students were recruited. The instruments for this study were self-efficacy for drug dosage calculation, anxiety for drug dosage calculation and perceived medication administration competence. The data were collected from November 2018 to January 2019, analyzed by descriptive analysis, chi-square, t-test, Scheffe test, correlation coefficients, and multiple regression using the SPSS 25.0 program. The main predictors of perceived medication administration competence were identified as confidence in drug dosage calculation (${\beta}=.463$, p<.001), Attitude of participation at clinical practice (${\beta}=.168$, p=.040). These two factors explained about 29% of variance in perceived medication administration competence (F=26.93, p<.001). It can contribute to improve their ability to administrate medication in practice, with the accuracy of prescription, recalculation of prescribed drug dose, and observation of adverse reactions in clinical practice and simulation with collaborative approach.

• Journal of Digital Convergence
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• v.17 no.2
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• pp.243-254
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• 2019

The purpose of this study was to investigate the effect of helplessness, depression, subjective health status, family support, and social support on health promoting behaviors of elderly people over 65 years old. The subjects of this study were 3 welfare centers in G city and C city, 3 senior citizen center and 225 elderly people in 2 geriatric hospital, and this study was analyzed with descriptive statistics, reliability, correlation, confirmatory factor analysis, fitness test, total effect, direct effect, and indirect effect. The direct effects of variables affecting health promoting behaviors were social support, depression, family support, subjective health status, and helplessness. These variables accounted for 66% of health promoting behaviors. Depression, helplessness had a significant indirect effect on family support and social support, and subjective health status had a significant indirect effect on social support, but didn't have a significant indirect effect on family support. In this paper, we propose a new approach to elderly's health promoting behaviors and it is recommended that an intervention program be developed and applied to on personal situation should be necessary for elder's depression, helplessness and subjective health status.

• Journal of Digital Convergence
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• v.17 no.8
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• pp.15-26
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• 2019

This study was to explore the domestic research trends, and education and operation cases concerned with Korean colleges in the fourth industrial revolution era. It was conducted through the analysis of 114 academic papers registered to the Korea Research Foundation, the newspaper articles, and the main 4-year university homepage from 2016 to April 2019. The results was as follows. Research papers have been increasing since 2016; research were conducted by humanities and social sciences as well as engineering academics interesting in research topics such as technologies, curriculum, and teaching and learning by mainly using quantitative research, literature research. As for the college education, reorganization of the undergraduate and majors centered on the science and engineering field, teaching and learning related with learner's participation and performance, and provide efficient academic affairs management and career guidance using Chatbot or Cloud computing. Industry-academia cooperation was focuses on the field of science and engineering. In future research, it is necessary to explore the research on college students' career and employment, the research on academic affairs management and infrastructure, the relational research considering the variables among college students and faculties, and the qualitative and mixed method approach.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.135-145
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• 2019

Prolonged recession has caused the youth unemployment rate in Korea to remain at a high level of approximately 10% for years. Recently, the number of unemployed Koreans in their 30s and 40s has shown an upward trend. To expand the government's employment promotion and unemployment benefits from youth-centered policies to diverse age groups, including people in their 30s and 40s, prediction models for different age groups are required. Thus, we aimed to develop unemployment prediction models for specific age groups (30s and 40s) using available unemployment rates provided by Statistics Korea and Google search queries related to them. We first estimated multiple linear regressions (Model 1) using seasonal autoregressive integrated moving average approach with relevant unemployment rates. Then, we introduced Google search queries to obtain improved models (Model 2). For both groups, consequently, Model 2 additionally using web queries outperformed Model 1 during training and predictive periods. This result indicates that a web search query is still significant to improve the unemployment predictive models for Koreans. For practical application, this study needs to be furthered but will contribute to obtaining age-wise unemployment predictions.