• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.8
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• pp.210-220
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• 2017

This study investigated the effect of social support (MOS-SSS), and physical (ADL, IADL) and mental (CES-D, MMSE-K) function on the quality of life (WHOQOL- BREF) among the elderly at care facilities. The survey respondents were 524 elderly aged 65 and older living in 15 care facilities located in D city. Data were collected through a personal interview conducted by interviewers who visited each care facility from November 2015 to January 2016. As a result, the quality of life was significantly lower in the elderly group with lower social support, with dysfunction in ADL and IADL than in the normal range group, with depression and cognitive impairment group than in the normal range group. The quality of life had a significant positive correlation with social support, ADL, IADL and cognitive impairment, but a significant negative correlation with depression. According to the results of covariance structure analysis, physical function had a greater impact on the quality of life than mental function or social support. Lower quality of life was associated with lower physical and mental function and lower social support. Therefore, concrete measures need to be devised to enhance physical function in order to improve the quality of life among the elderly in care facilities.

• Journal of Digital Convergence
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• v.13 no.11
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• pp.517-528
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• 2015

An analysis of the Convergence structural model on well-dying awareness has been conducted with a sample of 769 retired seniors who are participating in sports activities, and the results are as follows; First, after testing the goodness-of-fit of our structural model on well-dying awareness among retired seniors participating in sports activities, the final model was a good fit with physical care, which is a sub-variable of health promotion behaviors, and physical wellness, which is a sub-variable of wellness, used as covariates. Second, as a result of influence verification, the structural model showed six paths in total: resocialization${\rightarrow}$well-dying awareness, resocialization${\rightarrow}$health promotion behaviors, resocialization${\rightarrow}$wellness, health promotion behaviors${\rightarrow}$wellness, health promotion behaviors${\rightarrow}$well-dying awareness, and wellness${\rightarrow}$well-dying awareness.

• Culinary science and hospitality research
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• v.19 no.5
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• pp.121-135
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• 2013

The purpose of the present study is to investigate the structural relationships of work-family culture, work-family balance and organizational commitment among Korean hotel employees. In order to achieve the study goal, frequency analysis, confirmatory factor analysis, reliability analysis, correlation analysis and covariance structure analysis were undertaken using SPSS(18.0) and AMOS(18.0). The results showed that 'managerial support' had a significantly positive effect on work-family balance, and 'fewer negative career consequences' had a significantly positive effect on affective organizational commitment. In addition, work-family balance had a significantly positive effect on affective organizational commitment, Hence, in order to enhance employees' affective organizational commitment, the atmosphere in which employees can take advantage of family-friendly policies without any worry about the future disadvantages should be built. Also, management has to consider employees' work-family balance to be important and needs to develop various policies to keep employees' work and family stability.

• Geotechnical Engineering
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• v.2 no.3
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• pp.67-78
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• 1986

This paper presents how to determine the system reliability of a typical shallow foundation constituted four potential correlated failure modes of hearing capacity (BCM), consolidation settlement (CSM), moment (MFM), and tension shear (PCM). Through the idenfication of the distinct and different modes and evaluation of range of system reliability, the obtained conclusions are as follows; 1. The CSM and the PCM are the lowest and highest of reliability indices of single performance function, and the BCM and the MFM are medium of them. 2. For the correlated failure modes, the hi-modal bounds Is narrower and lower of failure probability than the unimodal bounds. Not to be overestimated, therefore, the system reliability should be based on the second-order bounds using correlated performance functions.

• The Journal of the Korea Contents Association
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• v.17 no.5
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• pp.326-336
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• 2017

This study investigates the relevance of stress, self factor and emotional factor, and the influence on Smartphone Addiction Level among college students. The survey was administered to 261 college students in J city from December 16th to 23rd, 2016. The structured self-administered questionaries were used. The multiple linear regression analysis revealed that the factors with explanatory powers of 52% on Smartphone Addiction Level included physical activity changes, sleep disorders, the self control about self factors, the impulsion of emotional factors. With the analysis of covariance structure, we could confirm the relationship among the four factors such as stress, self factor, emotional factor and Smartphone Addiction Level. The results of the study indicate that the efforts to manage stress, self factors and emotional factors, are required to reduce the Smartphone Addiction Level of the college students. The results are expected to be useful for the development of programs and policy to decrease the Smartphone Addiction Level. In the following study, structural equation modeling about additional factors, which influences on Smartphone Addiction Level, will be needed.

• Proceedings of the Korean Association for Survey Research Conference
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• 2007.11a
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• pp.55-65
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• 2007

In this research, it will be examined on mathematical model of AMOS software program that ues for Covariance Structure Analysis. if we have not understood to mathematical model of Covariance Structure, we fail to understand Structural equation modeling. Similarly If We were not understand to mathematical model of AMOS Software, we do not use Software adequately. Therefore we examine two sorts of Software that be designed for Structural equation modeling or Covariance Structure Analysis. In this research, We will focus on 8 assumption of Structural equation modeling and compare AMOS(Analysis of MOment Structure) program with LISREL(Linear Structure RELation) program. We found that A Program of AMOS Software have materialized with RAM(Reticular Action Model).

• Culinary science and hospitality research
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• v.18 no.2
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• pp.118-133
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• 2012

The purpose of this study is to investigate the relationships of core-self evaluation, service recovery performance, job satisfaction and turnover intention among frontline staff in the Korean hotel industry. In order to examine the proposed hypotheses, descriptive statistics analysis, frequency analysis, confirmatory factor analysis, reliability analysis, correlation analysis and covariance structure analysis were undertaken using SPSS(10.0) and AMOS(4.0) to explore the relationships among variables. The results showed that core-self evaluation had a significantly positive effect on service recovery performance. In addition, service recovery performance had a significantly positive effect on job satisfaction, while there was no evidence of relationship between service recovery performance and turnover intention. Job satisfaction was explored to have a significant negative effect on turnover intention.

• The Journal of the Korea Contents Association
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• v.10 no.7
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• pp.355-365
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• 2010

IT service is becoming a critical business operation in the age of information revolution. In providing IT services internally to other functions of the corporation and externally to other organizations, sharing of knowledge between business people and system people is known to become more and more critical for successful IT services. Purpose of this research is to examine the impact of IT service quality on knowledge sharing activities between IT service providers and users. Theoretical research model, through an extant literature review, is proposed here, consisting of IT service quality, relationship quality(satisfaction, trust and commitment), and the level of knowledge sharing activities. Survey results of 183 users indicates that IT service quality significantly influences commitment through satisfaction and trust, which in turn influences the level of knowledge sharing activities. Also, interestingly, satisfaction and trust do not directly influences the level of knowledge sharing,but indirectly, through commitment.

• Journal of Navigation and Port Research
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• v.36 no.10
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• pp.833-838
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• 2012

TDOA which is one of the position estimation methods is used on indoor positioning, jammer localization, rescue of life, etc. due to high accuracy and simple structure. This paper proposes the super-resolution TDOA estimator using MPM(Matrix Pencil Method). The proposed estimator has more accuracy and is applicable to narrowband signal compared with the conventional cross-correlation. Furthermore, its complexity is low because obtained data directly is used for construction of matrix unlike the MUSIC(Multiple Signal Classification) which is one of the well-known super-resolution estimator using covariance matrix. To validate the performance of proposed estimator, errors of estimation and computational burden is compared to MUSIC through software simulation.

• The Journal of the Korea Contents Association
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• v.14 no.3
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• pp.223-231
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• 2014

This study aims to identify job stress of firemen and the relations between their job stress, depression and fatigue, targeting firemen who are working for local fire stations. We interviewed the subjects using a short-answer type questionnaire or a online questionnaire. The data collected were analysed with a use of SPSS WIN 15.0 for confidence analysis, correlation analysis, step-by-step multi-regression analysis, and covariance structure analysis(CSA). This study result tasks and emotional stress had a direct effect on depression and fatigue. Therefore, this study suggests that governmental management should be provided for firemen that are classified as a high-risk group in occupational characteristics. Above all, the causes of stress should be diagnosed, its management goals should be set, and effective intervention programs should be provided.