• Convergence Security Journal
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• v.14 no.6_2
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• pp.73-81
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• 2014

This study has an objective to analyze the causal relationship between the emotional labor of the members in the private security firms and its effect on their job stress and validity of the organization. To carry out the study, I established a population of private security guards working at the security firms in Seoul. Then a total of 700 question naires were sent out for the survey using the random sampling method of clusters. The study was carried out over about four months, from May, 2014 to September, 2014. A total of 676 questionnaires were used for the final data. 24 questionnaires were excluded either because they were not returned or contained extreme value. In this study, a statistical package of SPSSWIN 18.0 and AMOS 18.0 were used in the data analysis and the causal relationship was verified using the covariance structural equation. The analysis showed the emotional labor to have a positive effect on the validity of organization but a negative effect on the job stress at the statistical level of p<.001 and the hypothesis was adopted. The hypothesis regarding the job stress was also adopted because job stress was found to have a negative effect on the validity of organization at the statistical level of p<.001. In addition, job stress was found to have a negative effect on the relationship between the emotional labor and validity of organization at the statistical level of p<.001. As a result, the hypothesis about the job stress would function as the parameter was only partially adopted.

• Convergence Security Journal
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• v.17 no.1
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• pp.89-100
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• 2017

This study has an objective to analyze the causal relationship between the business resource of the members in the Airport Special Guard's firms and its effect on their business attitude and turnover intention. To carry out the study, I established a population of Airport Special Guard's working at the Airport firms in In-cheon, Kim-po, Cheong-ju and Dae-gu. Then a total of 300 questionnaires were sent out for the survey using the random sampling method of clusters. The study was carried out over about four months, from July, 2016 to october, 2016. A total of 260 questionnaires were used for the final data. 40 questionnaires were excluded either because they were not returned or contained extreme value. In this study, a statistical package of SPSS WIN 18.0 were used in the data analysis and the causal relationship was verified using the multiple regression analysis. The analysis showed the business resource to have a positive effect on the business attitude but a negative effect statistical level of p<.01 on the turnover intention at the statistical level of p<.001 and the hypothesis was adopted. The hypothesis regarding the business attitude was also adopted because business attitude was found to have a negative effect on the turnover intention at the statistical level of p<.01. In addition, business attitude was found to have a negative effect on the relationship between the business resource and turnover intention at the statistical level of p<.05. As a result, the hypothesis about the business attitude would function as the parameter was only partially adopted. Through these research result, it was investigated that the relation between business resource, business attitude and turnover intention is significantly effective variable in airport special guard's. Additionally, business resource is the most important.

• Culinary science and hospitality research
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• v.22 no.3
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• pp.155-165
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• 2016

This study investigated general educational quality, satisfaction and loyalty related to dietary life among K university students in Busan. SPSS version 20.0 was employed to conduct various analyses, namely frequency, factor, reliability and regression. A number of results were discovered. First, factors of nutrition education quality (knowledge, interest, instructor) had a positive influence on satisfaction. Second, factors of satisfaction with nutrition education quality had a positive influence on loyalty. Third, the three factorsof nutrition education quality had a positive influence on loyalty. Of the the three nutrition education quality factors, the knowledge factor exhibited the strongest effect on satisfaction among, while the Interest factor had the strongest impacton loyalty. As a result, consideration must be given the factors that act on nutrition education quality.

• The Journal of the Korea Contents Association
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• v.20 no.4
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• pp.629-638
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• 2020

Ultimate purpose of study is to identify effects of marriage satisfaction and community attachment on parenting efficacy of married migrant women. The Survey used a structured questionnaire for married migrant women using the Multicultural Family Support Center in Ansan, Gyeonggi Province, for about three weeks from the end of September to mid-October 2017, and 231 data were used for the final analysis. The analysis methods were performed using the SPSS 25 package program for frequency analysis, descriptive statistical analysis, correlation analysis, hierarchical regression analysis and mediating effect analysis. The results showed that the marriage satisfaction and community attachment of married migrant women had a statistically significant effect on parenting efficacy. In addition, it was confirmed that community attachment had a partial mediating effect on the relationship between marriage satisfaction and parenting efficacy. Based on these results, I discussed policies and practices to strengthen marriage satisfaction, community attachment and parenting efficacy of marriage migrant women.

• The Korean Journal of Applied Statistics
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• v.31 no.4
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• pp.517-528
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• 2018

We provide R scripts to detect outliers in multivariate data and visualization. Detecting outliers is provided using three approaches 1) Robust Mahalanobis distance, 2) High Dimensional data, 3) density-based approach methods. We use the following techniques to visualize detected potential outliers 1) multidimensional scaling (MDS) and minimal spanning tree (MST) with k-means clustering, 2) MDS with fviz cluster, 3) principal component analysis (PCA) with fviz cluster. For real data sets, we use MLB pitching data including Ryu, Hyun-jin in 2013 and 2014. The developed R scripts can be downloaded at "http://www.knou.ac.kr/~sskim/ddpoutlier.html" (R scripts and also R package can be downloaded here).

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.18 no.2_spc
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• pp.247-260
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• 2020

A multi-regression model was developed to estimate the decommissioning cost for Kori unit 1 using foreign nuclear power plant (NPP) decommissioning cost data. First, the decommissioning cost data were collected for 13 boiling water reactors and 16 pressurized water reactors and converted into the values as of November 2019. Then, for the regression model, the decommissioning cost was chosen as the dependent variable, and two variables were selected as independent variables: a contamination factor that was designed to reflect the operational characteristics of the decommissioned NPP and the decommissioning period. A statistical package in the R language was used to derive the regression model. Finally, the regression model was applied to estimate the decommissioning cost for Kori unit 1. The estimated decommissioning cost for Kori unit 1 was 663.40~928.32 million US dollars (782,812~1,095,418 million Korean won).

• Culinary science and hospitality research
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• v.15 no.4
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• pp.172-186
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• 2009

This study investigates the relationship between the difference of the importance of physical environment by use behavior and customer satisfaction based on the customers who have visited domestic fine dining restaurants and tries to develop a marketing strategy to promote sales in fine dining restaurant business suffering from the global economic hard times. A survey was conducted to examine the customers who were older than 20 years old and have visited a fine dining restaurant, 'Wood & Brick' and 'Benigni', located at Sejongro Junction in Seoul for 61 days from May 1 to June 30, 2009. SPSS 14.0 statistical package was used to process data. Frequency analysis, reliability test, ANOVA, and multiple regression were executed. The result shows that the difference of the importance of physical environment by use behavior depends on the number of visits per month and the cost per capita. On the relationship between physical environment and customer satisfaction, cleanness, space arrangement, charm, and accessibility have positive effects on customer satisfaction.

• The Korean Journal of Applied Statistics
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• v.33 no.4
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• pp.421-437
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• 2020

This paper implemented a method to predict the fertility rate, mortality rate, and international migration rate using the R program, which has been widely used in recent years, that calculates population projection by substituting the results into the Leslie matrix. In particular, the generalization log gamma model for the fertility rate by Kaneko (2003), LC-ER model for mortality rate by Li et al. (2013), and functional data model for international migration rates proposed by Ramsay and Silverman (2005) and Hyndman and Booth (2008), Hyndman et al. (2013) can be directly demonstrated with R programs. Demography and bayesPop have been introduced as a representative demographic package implemented in R; however, it can be analyzed only for data uploaded to Human Mortality Database (HMD) and Human Fertility Database (HFD) with data changes and modifications requiring application of other data. In particular, in Korea, there is a limitation in applying this package because it is provided only for short-term data in HMD. This paper introduces an R program that can reflect this situation and the different patterns of low fertility, aging, migration of domestic and foreigners in Korea, and derives a population projection for the year 2117.

• Journal of the Korea Convergence Society
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• v.11 no.8
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• pp.309-316
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• 2020

The purpose of the study is to know that the medical skin care improves the quality of middle-aged women's life and happiness improves their confidence by analyzing the medical skin care visit intention, experience satisfaction, and happiness according to their beauty interest. This study analyzed 242 copies of the data through the SPSS v.22 Statistical Package Program. According to the analysis, middle-aged women's interest in beauty is important to experience satisfaction(F=201.821, p<.001). Experience satisfaction is statistically significant to happiness factors(F=384.625, p<.001). Based on this study, differentiated marketing that identifies the intention to visit is needed. Also, the higher the satisfaction of medical skin care experience, the more helpful it is to lead a positive life by improving their confidence.

• The Journal of the Korea Contents Association
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• v.11 no.4
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• pp.347-360
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• 2011

This paper is to identifies relationship between service quality, trust toward employees, trust toward store and store loyalty by investigate how service quality influences on trust toward employees and trust toward store, and its, in turn, influence on store loyalty and explain the moderating effect in relationships between service quality and trust toward employees, and service qualty and trust toward store in bank services setting. A survey study was conducted to collect the data with the actual service purchasers at domestic mayor banks. Analysis of structural equation modeling with AMOS 18.0 was performed to test the research hypothesis. The results of the study are as follows: First, it was found to the moderating effect in relationships between empathy dimension of service quality and trust toward employees, and assurance dimension of service quality and trust toward store. Second, service quality shows differential effects on both trust toward employees and trust toward store by dimension but trust toward employees influence on both trust toward store and it, in turn, influence on store loyalty. To sum up, it have to build empathy of service quality for increase of trust toward their customer who have high duration of relationship and have to build assurance of service quality for increase of trust toward store in bank service settings.