• Journal of the Korea Convergence Society
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• v.8 no.1
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• pp.139-148
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• 2017

This convergence research was conducted to understand the effect of university students' addiction to smartphones on self-esteem and self-efficacy, with stress level and mental health as the parameters. The subjects were students from three universities located in J province, and 303 questionnaires were used as the data for analysis. The data were analyzed with Pearson's correlation, multiple regression and pathway analysis by SPSS and AMOS. As a result, addiction to smartphones showed negative (-) correlation with self-esteem, self-efficacy, and mental health, while showing positive (+) correlation with stress level. In addition, the addiction to smartphones has an influence on self-esteem and self-efficacy with stress level and mental health as the parameters. Therefore, in order to improve the self-esteem and self-efficacy of university students, programs should be developed to prevent and manage addiction to smartphones, relieve stress and promote mental health.

• Journal of the Korea Convergence Society
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• v.9 no.10
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• pp.285-291
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• 2018

The purpose of this study is to identify the effects of consulting participation level, consulting specialty, and consulting capability on consulting intelligibility and consulting performance for Small Medium-sized Enterprises (SMEs).This study performed statistical analysis such as AMOS 22.0 to conduct exploratory factor analysis and measurement model in order to identify interrelationship among the consulting participation level, consulting intelligibility and consulting performance. The results of our study are as follow. Firstly and secondly consulting participation level, consulting specialty and consultant capability has positive effect on consulting performance and consulting intelligibility. Thirdly, consulting intelligibility has non positive effect on consulting performance. According to this survey, it is important to make good consulting performance through consulting participation level, specialty and capability. But the consulting intelligibility is not effected on consulting performance.

• Journal of the Korea Convergence Society
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• v.8 no.3
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• pp.265-273
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• 2017

The purpose of this study was to investigate the relationship among social support, career decision-making self-efficacy, and career decision level in golf majors. For this purpose, a survey was given to a convenience sample of 215 students in universities in Seoul and its metropolitan areas. The data were then analyzed using descriptive statistics, correlations, and multiple regression analysis. The major findings of this study were as follows. First, social support had a significant effect on the career decision-making self-efficacy of golf majors. Second, social support had a significant effect on the career decision level of golf majors. Third, career decision-making self-efficacy had a significant effect on the career decision level of golf majors. The results of this study may be helpful to provide empirical evidence on the roles of social supports and career decision-making self-efficacy needed to decide golf majors' career path.

• Journal of Korean Ophthalmic Optics Society
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• v.14 no.1
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• pp.133-138
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• 2009

Purpose: This study was designed to investigate the changes of vision and ocular functions induced by increase of blood alcohol level. Methods: Blood alcohol level, vision, refractive errors, near point convergence, heterophoria, and relative convergence were measured at 1 h, 4 h, and 24 h after acute alcohol ingestion of 0.7 g per kg body weight. Results: At 1 h after alcohol ingestion, myopization and ocular functions which measured near point convergence, positive and negative convergences, and degree of heterophoria remarkedly worked a changes accompanied with the maximum value of blood alcohol level. But at 24 h after that, all of ocular functions were recovered to degree of 90~99% compared with non-alcoholic normal conditions. Conclusions: As the increase of blood alcohol level is able to induce the significant changes of visual acuity and ocular functions, opticians have to understand thoroughly the patient's conditions by alcohol ingestion before refractive test and ocular examinations.

• International Area Studies Review
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• v.15 no.1
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• pp.585-602
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• 2011

This study is to investigate the long run convergence behavior of the housing rent of Korean 21 cities, by using the Phillips and Sul (2007)'s newly developed panel convergence test method. The empirical result shows that the 21 Korean cities nationwide converge in four different groups according to the level of convergence. The 1st group is composed of 3 Seoul metropolitan cities, the 2nd group is composed of Bucheon, the 3rd group is composed of 10 cities such as Busan, Daegu, etc, and the 4th group is composed of 7 cities including Jeonju and Mokpo etc. About the speed of convergence among the member cities within the group, the 1st group has the highest speed and next the 4th group, followed by the 2nd group, and finally the 3rd group. The fact that the member cities of the 1st group with the highest rent level and the 4th group with the lowest rent level converges rapidly means the polarization of rent between the two groups. Finally, this paper suggests policy implications to relax the widening gap of individual income between the higher and the lower rent convergent groups.

• Journal of the Korea Convergence Society
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• v.11 no.12
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• pp.451-456
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• 2020

This study compared the utility of walking aids, and activities of daily life depending on the ability of people with mobility disabilities to use walking aids. Data were extracted from the Korea Welfare Panel Study in 2014. Data of 435,947 individuals were analyzed using chi-square and t-tests. The findings from this study showed that disabled persons who cannot use walking aids independently were more likely to have a severe disability level and a lower level of daily activities than the independent group. The level of social participation and leisure activities were also significantly lower in the dependent than the independent group. Therefore, walking aids should be tailored for individuals depending on their level of independence for using walking aids.

• Journal of the Korean Society of Industry Convergence
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• v.10 no.4
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• pp.271-274
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• 2007

In this paper, we propose a intelligent controller design method for the water level control of the power plant drum in the form of nonminimum phase system. The proposed method is based on T. Takagi and M. Sugeno's fuzzy model. And we illustrate the improved characteristics as the simulation results, comparing with the conventional the PID and LQ controller design method.

• Journal of the Korean Institute of Intelligent Systems
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• v.14 no.7
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• pp.852-856
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• 2004

The present paper establishes a necessary and sufficient condition for weak convergence for weighted sums of compactly uniformly integrable level-continuous fuzzy random variables as a generalization of weak laws of large numbers for sums of fuzzy random variables.

• Journal of the Korean Society of Industry Convergence
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• v.3 no.4
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• pp.299-306
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• 2000

이 논문은 파이프라인 함성을 위한 상위수준 데이터 경로 하성과 콘트롤 합성의 통합에 관한 연구이다. 현재 대부분의 상위수준 합성 방법은 콘트롤 영역의 영향을 무시하는데 보다 나은 설계를 위하여 데이터 경로디자인 영역과 콘트롤 디자인 영역을 통합하여 탐색하는 파이프라인 상위수준함성 도구를 구현했다. 이 도구는 비용 제한 하에서 최고 성능의 파이프라인을 합성하는 비용재한합성과 성능 제한 하에서 최서 비용의 파이프라인을 합성하는 성능 제한합성의 두 가지 방식을 제공한다.

• Journal of the Korea Convergence Society
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• v.6 no.5
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• pp.1-8
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• 2015

The data of fair value hierarchy is expected to contain different degree of measurement error, information asymmetry, and information risk by the level of hierarchy. Thus, this study examines how hierarchy of fair value discriminately influences on companies' cost of capital. Through regression analysis of corporations listed from 2011 to 2014, it turns out that the regression coefficient of level 1 and 2 of fair value variable vary their rank by cost of capital types, while level 3 contains the highest regression coefficient for every cost of capital variable. In addition, further study of how the relevance between cost of capital and the fair value hierarchy gets affected by market risk management level and audit quality finds no consistent results. However, by analyzing the effect of coincident interaction through the convergence of market risk management and audit quality, when audit quality and market risk management level are high, the effect of relieving cost of capital of Level 3 gets the highest. In conclusion, fair value hierarchy data seems to affect discriminately on cost of capital by involved information risk, and the information risk could decrease by the level of market risk management and audit quality.