• The Korean Journal of Applied Statistics
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• v.24 no.5
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• pp.941-949
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• 2011

The influence function is used to develop criteria to detect outliers in discriminant analysis. We derive the influence function of observations that estimate the the misclassification probability in discriminant analysis for three groups. The proposed measures are applied to the facial image data to define outliers and redo the discriminant analysis excluding the outliers. The study proves that the derived influence function is more efficient than using the discriminant probability approach.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.7
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• pp.1078-1086
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• 2010

This study verifies the validity of the role-relaxed consumption scale developed by Kahle (1995b) for Korean consumers. This study also tests a model that includes consumer susceptibility to interpersonal influence along with attention to social comparison information as antecedents and their relationships. Data were gathered by surveying university students in Seoul, Korea, using convenience sampling, and 600 questionnaires were used in the statistical analysis. Correlation analysis, factor analysis, ANOVA and path analysis were conducted in order to analyze the data. It was proved that the role-relaxed consumption scale was effective for Korean consumers. A path analysis showed that consumer susceptibility to interpersonal influence and attention to social comparison information influence role-relaxed consumption.

• Geomechanics and Engineering
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• v.17 no.3
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• pp.287-294
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• 2019

The finite element method (FEM) is widely used to evaluate the seismic performance of pile-supported buildings. However, there are problems associated with modeling the pile end resistance using the FEM, such as the dependence on the mesh size. This paper proposes a new method of modeling around the pile tip to avoid the mesh size effect in two-dimensional (2D) analyses. Specifically, we consider the area of influence around the pile tip as an artificial constraint on the behavior of the soil. We explain the problems with existing methods of modeling the pile tip. We then conduct a three-dimensional (3D) analysis of a pile in various soil conditions to evaluate the area of influence of the soil around the pile tip. The analysis results show that the normalized area of influence extends approximately 2.5 times the diameter of the pile below the pile tip. Finally, we propose a new method for modeling pile foundations with artificial constraints on the nodal points within the area of influence. The proposed model is expected to be useful in the practical seismic design of pile-supported buildings via a 2D analysis.

• Fashion & Textile Research Journal
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• v.16 no.6
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• pp.888-896
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• 2014

This study examines the effect of college students' interpersonal relations disposition on appearance concern and appearance management behavior. Questionnaires were administered to 202 college students living in Daegu. The SPSS 20.0 package was utilized for data analysis which included frequency analysis, Cronbach's ${\alpha}$, factor analysis, cluster analysis, regression analysis, t-test and logistic regression. Five factors of appearance management behavior (body management behavior, skin care behavior, hair/fashion behavior, cosmetics usage behavior, plastic surgery behavior), seven factors of interpersonal relations disposition (independent/responsibility, sympathetic/receptive, sociable/friendly, competitive/aggressively, conspicuous/narcissistic, defiant/distrust, dominant /supreme) and two groups of appearance concern (high, low) were utilized for the problem analysis of the study. The results of this study were: First, Interpersonal relations disposition had an influence on appearance management behavior. Conspicuous/narcissistic type showed a positive influence on body management behavior, skin care behavior, hair/fashion behavior, cosmetics usage behavior, plastic surgery behavior. The sympathetic/receptive type showed a positive influence on skin care behavior and the competitive/aggressively type showed a positive influence on hair/fashion behavior; however, independent/responsibility type showed a negative influence on cosmetic usage behavior. Second, dominant /supreme type showed a negative influence on appearance concern; however, conspicuous/narcissistic type and defiant/distrust type showed a positive influence on appearance concern. Third, the appearance concern groups showed differences on appearance management behavior. The higher appearance concern group compared to the low appearance concern group were more active for cosmetics usage behavior, hair/fashion behavior, plastic surgery behavior, body management behavior and skin care behavior.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.25 no.4
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• pp.161-169
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• 2017

The Human Factors Analysis and Classification System (HFACS) is a general human error framework originally developed and tested within the U.S. military as a tool for investigating and analyzing the human causes of aviation accidents. Based upon Reason's (1990) model of latent and active failures, HFACS addresses human error at all levels of the system, including the condition of aircrew and organizational factors. As a result, this study aims to examine the influence between the latent conditions based on HFACS. This study seeks to verify the factors of "Organizational Influence" effecting the "Precondition for Unsafe Acts" of HFACS. The results of empirical analysis demonstrated that the organizational influence had a positive influence on precondition for unsafe act, especially the "Organizational Climate" of organizational influence had even greater influence on precondition for unsafe acts.

• Journal of applied mathematics & informatics
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• v.13 no.1_2
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• pp.479-485
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• 2003

The influence of observations on the Wilks' lambda test of a linear hypothesis in multivariate regression is investigated using the local influence method. The perturbation scheme of case-weights is considered. A numerical example is given to show the effectiveness of the local influence method in identifying the influential observations.

• Communications for Statistical Applications and Methods
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• v.12 no.3
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• pp.635-642
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• 2005

In statistical diagnostics a large number of influence measures have been proposed for identifying outliers and influential observations. However it seems to be few accounts of the influence diagnostics on test statistics. We study influence analysis on the likelihood ratio test statistic whether the two sets of variables are uncorrelated with one another or not. The influence of observations is measured using the case-deletion approach, the influence function. We compared the proposed influence measures through two illustrative examples.

• Journal of Fashion Business
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• v.20 no.1
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• pp.69-81
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• 2016

In this study investigated the effect of emotional labor, emotional exhaustion, and depression on the job-related attitudes. Sample subjects used in this study were salespeople of a fashion shop in Jeollabukdo and Jeollanamdo. Questionnaire data from 160 fashion shop salespeople were analyzed through a reliability analysis, factor analysis, and multiple regression analysis. The results of the study were as follows. First, emotional labor of salespeople was divided into 2 factors, surface acting and deep acting. Second, emotional labor had a significant influence on the emotional exhaustion and depression. Third, the surface acting of emotional labor had a positive influence on the emotional exhaustion and depression; whereas, the deep acting of emotional labor had a negative influence on the emotional exhaustion and depression. Fourth, the surface acting of emotional labor, emotional exhaustion, and depression had a negative influence on job involvement; in addition, the deep acting of emotional labor had a positive influence on job involvement. Fifth, the surface acting of emotional labor, emotional exhaustion, and depression had a positive influence on turnover intention; in addition, the deep acting of emotional labor had a negative influence on turnover intention.

• Journal of Distribution Science
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• v.15 no.2
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• pp.37-46
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• 2017

Purpose - This research investigates whether e-service quality has the influence on long-term orientation, consumer commitment, and satisfaction. Research design, data, and methodology - Data collection took place for 30 days from October 1, 2015 to October 31, 2015. 315 copies had been analyzed. Covariance structure analysis with credibility and factor analysis was conducted to verify this research hypotheses. Results - First, the lower dimension concepts of e-service quality, reliability, and tangibility had a significant influence on customer commitment, and responsiveness had a significant negative influence. However, aesthetics did not have a significant influence on that. Secondly, aesthetics had a significant influence on long-term orientation, but reliability, tangibility, and responsiveness did not have a significant influence. Thirdly, reliability, tangibility, and aesthetics had a positive influence on customer satisfaction. However, responsiveness had a negative influence. Fourthly, customer commitment had a significant and positive influence on customer satisfaction, but customer commitment and customer satisfaction had a negative influence on long-term orientation. Conclusions - This research verifies the influencing relationship between e-service quality of a franchise coffee shop application with customer commitment, customer satisfaction, and long term orientation. By the results of this research, possibility of application and expansion of theory has been proven.

• Fashion & Textile Research Journal
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• v.14 no.2
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• pp.230-241
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• 2012

The purpose of this study was to examine the effect of power sources of department store and fashion company, and salesperson's job consciousness on job satisfaction in the middle management system of department store. Questionnaire data from 193 salespeople in the middle management of department store were analyzed by reliability analysis, factor analysis, correlation analysis, multiple regression analysis, hierarchical regression analysis. The results of this study were as follows: First, coercive power, informational and expert power, and referent power of department store had significant effects on job satisfaction. The coercive power of department store had a negative influence on job satisfaction, while informational and expert power, and referent power of department store had a positive influence on job satisfaction. Second, referent power, expert power, reward power, coercive power of fashion company had a positive influence on job satisfaction. Third, referent power of department store had a greater influence on job satisfaction than other power sources. Fourth, job commitment and pride, prospect awareness had a positive influence on job satisfaction, while professional self-awareness had no effect on job satisfaction.