• 한국지능정보시스템학회:학술대회논문집
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• 한국지능정보시스템학회 2000년도 추계정기학술대회:지능형기술과 CRM
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• pp.289-299
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• 2000

This study provides an application of datamining approach to CQI(Continuous Quality Improvement) using the discharge summary. First, we found a process variation in hospital infection rate by SPC (Statistical Process Control) technique. Second, importance of factors influencing hospital infection was inferred through the decision tree analysis which is a classification method in data-mining approach. The most important factor was surgery followed by comorbidity and length of operation. Comorbidity was further divided into age and principal diagnosis and the length of operation was further divided into age and chief complaint. 24 rules of hospital infection were generated by the decision tree analysis. Of these, 9 rules with predictive prover greater than 50% were suggested as guidelines for hospital infection control. The optimum range of target group in hospital infection control were Identified through the information gain summary. Association rule, which is another kind of datamining method, was performed to analyze the relationship between principal diagnosis and comorbidity. The confidence score, which measures the decree of association, between urinary tract infection and causal bacillus was the highest, followed by the score between postoperative wound disruption find postoperative wound infection. This study demonstrated how datamining approach could be used to provide information to support prospective surveillance of hospital infection. The datamining technique can also be applied to various areas fur CQI using other hospital databases.

• Journal of Information Technology Applications and Management
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• 제27권6호
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• pp.153-170
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• 2020

The Educational Restitution Rate is an important parameter that determines the quality of university education. This paper analyzed data from 148 private universities over the 10 years from 2009 to 2018 using data mining techniques in Korea. A significant causal relationship is detected in the fixed effect model as a result of the panel estimation. And the scale of faculty expansion and fund management, which are the university evaluation indicators, and the size of basic funds, respectively, have a positive effect on the ERR, which is within the confidence interval. In the analysis, the more private universities improve the tuition dependence rate, the more decisively positive affecting ERR. As a result of nonparametric regression estimation, when the faculty expansion ratio is reinforced, the effect of economies of scale is detected in some sections, the improvement of the tuition dependence rate, and the result value is generated through the improvement that results are derived at a certain point in time. We hope that the university based on this study can be a basic Indicators for the diagnosis of basic competencies and policy of student-centered education.

• Nutrition Research and Practice
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• 제16권1호
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• pp.94-105
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• 2022

BACKGROUND/OBJECTIVES: The purpose of this study was to investigate the association between socioeconomic status and chewing discomfort and identify the role of food insecurity in the association's causal pathway in a representative sample of Korean elders. MATERIALS/METHODS: We conducted cross-sectional analyses of the Korea National Health and Nutrition Examination Survey (2013-2015) data for elders aged ≥ 65 years. Socioeconomic status indicators used included household income and education level. Chewing discomfort was assessed according to the self-reported presence of chewing problems. Food security was surveyed using a questionnaire based on the US Household Food Security Survey Module. RESULTS: The odds ratios of chewing discomfort in the 1st and 2nd income quartiles were 1.55 (95% confidence interval [CI], 1.15-2.10) and 1.40 (95% CI, 1.03-1.90), respectively, compared to participants in the highest income quartile. Participants with the lowest education level were 1.89 (95% CI, 1.30-2.75) times more likely to have chewing discomfort than those without chewing discomfort. After including food security in the final model, the logistic coefficients were attenuated in the income and education quartiles. CONCLUSIONS: Low socioeconomic status was associated with chewing discomfort. In addition, the results confirm that food insecurity can mediate the association between socioeconomic inequalities and chewing discomfort among the elderly.

• 한국의류산업학회지
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• 제24권5호
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• pp.628-635
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• 2022

This study sought to investigate the relationship between perception, body awareness, and beauty management behavior in the untact era in their MZ generation's, and as a result of the study, it was confirmed that there is a causal relationship between variables. For the empirical analysis of the study, a survey was conducted online(Google questionnaire) in Seoul/Gyeonggi area from June 7 to 26, 2021. Of the 548 questionnaires, 512, excluding 36, were analyzed using SPSS V.21.0. Among the sub-factors of perception in the untact era, it was confirmed that the social environment perception and human relationship perception are key factors that negatively affect body consciousness and beauty management behavior, and so does self-awareness(p<.05). Next, it was confirmed that, among the sub-factors of body consciousness, appearance management awareness and appearance/body care effort were key factors that positively affected beauty management behavior, and that appearance confidence was also an important factor that positively affected beauty management behavior(p<.05). Therefore, through this study, we intend to provide basic data for product development, programs, and marketing strategies that can cope with changes in the beauty consumption market in preparation for the post-COVID era.

• Mycobiology
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• 제50권1호
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• pp.79-85
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• 2022

Strawberries are a popular economic crop, and one of the major plantations and exporting countries is Korea in the world. The Fusarium oxysporum species complex (FOSC) is a soil-borne pathogen with genetic diversity, resulting in wilt disease in various crops. In Korea, strawberries wilt disease was first reported in the 1980s due to the infection of FOSC, causing significant economic damage every year. The causal agent, F. oxysporum f. sp. fragariae, is a soil-borne pathogen with a characteristic of FOSC that is difficult to control chemically and mutates easily. This study obtained genetic polymorphism information that was based on AFLP, of F. oxysporum f. sp. fragariae 91 strains, which were isolated from strawberry cultivation sites in Gyeongsangnam-do and Chungcheongnam-do, and compared strains information, which was the isolated location, host variety, response to chemical fungicide, and antagonistic bacteria, and mycelium phenotype. As a result, AFLP phylogeny found that two groups were mainly present, and group B was present at a high frequency in Gyeongsangnam-do. Group B proved less sensitive to tebuconazole than group A through Student's t-test. In addition, the fractions pattern of AFLP was calculated by comparing the strain information using PCA and PERMANOVA, and the main criteria were separated localization and strawberry varieties (PERMANOVA; p< 0.05). And tebuconazole was different with weak confidence (PERMANOVA; p< 0.10). This study suggests that the F. oxysporum f. sp. fragariae should be continuously monitored and managed, including group B, which is less chemically effective.

• 한국조리학회지
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• 제19권3호
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• pp.218-233
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• 2013

본 연구는 커피전문점 서비스품질이 지각된 가치와 행동의도에 미치는 영향 관계를 파악하기 위하여 통계프로그램 SPSSS 18.0을 이용하여 부산지역 대학생 237명을 대상으로 빈도분석, 요인 및 신뢰도 분석, 상관관계분석, 회귀분석을 실시하였다. 가설검정을 위한 다중회귀분석에서는 서비스품질 4개요인 중 종사원의 신뢰감, 커피의 본원적 특성은 심미적 가치에 유의한 영향을 미치지 않는 것으로 나타났고, 커피이외의 메뉴특성(${\beta}$=.293, p<.001)과 물리적 환경(${\beta}$=.293, p<.001)은 유의하게 분석되어 연구가설은 부분 채택되었다. 그리고 서비스품질이 실용적 가치에 미치는 영향에서는 종업원 신뢰감은 (${\beta}$=.264 p<.001), 커피의 본원적 특성은 (${\beta}$=.463, p<.001), 커피이외의 메뉴특성(${\beta}$=.139, p<.05)과 물리적 환경(${\beta}$=.110, p<.05) 모두 유의하게 분석되어 연구가설은 채택되었다. 그리고 서비스품질이 행동의도에 미치는 영향에서는 종업원의 신뢰감은 (${\beta}$=.262 p<.001), 커피의 본원적 특성은 (${\beta}$=.411, p<.001), 커피이외의 메뉴특성(${\beta}$=.157, p<.01)과 물리적 환경(${\beta}$=.137, p<.05) 모두 유의하게 분석되어 연구가설이 채택되었다. 또한 지각된 가치가 행동의도에 미치는 영향에서는 심미적 가치(${\beta}$=.265 p<.001), 실용적 가치(${\beta}$=.536, p<.001), 모두 유의하게 분석되어 행동의도와의 인과관계를 확인할 수 있었다.

• 한국산업정보학회논문지
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• 제26권4호
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• pp.73-89
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• 2021

대학생 시기에 진로에 대한 목표를 설정하고, 진로를 결정하는 것은 인생에서 매우 중요한 과업 중 하나다. 본 연구에서는 대학생의 진로 선택 동기와 진로 역량 및 진로 결정의 구조적 관계를 조사 분석하여 대학생들의 진로 결정에 도움을 줄 수 있는 자료를 제공하는데 목적을 두고 있다. 이와 같은 연구의 목적을 달성하기 위하여 부산 소재 4년제 D대학에 재학중인 학생을 대상으로 설문 조사를 하였다. 총 326부의 자료가 최종 분석에 사용되었으며, SPSS 25와 AMOS 25를 이용하여 경로 분석을 실시하였다. 본 연구의 연구 결과는 첫째 내재적 진로 선택 동기와 외재적 진로 선택 동기는 각각 진로 역량인 진로 성찰과 진로 관리에 유의한 영향을 미치는 것으로 나타났다. 둘째, 진로 역량인 진로 성찰과 진로 관리는 진로 결정 구성 요인인 진로 결정 구체성과 진로 결정 확신성에 모두 유의한 영향을 미치는 것으로 나타났다. 내재적 진로 선택 동기와 외재적 진로 선택 동기는 진로 역량인 진로 성찰과 진로 관리를 매개하여 진로 결정 구체성과 확신성에 유의한 영향을 미치는 것으로 나타났다. 이상의 연구 결과를 종합해 보면 대학생의 진로 결정의 구체성과 확신성을 높이기 위해서는 학생들의 진로 성찰 역량과 진로 관리 역량을 증진 시킬 필요가 있음을 확인할 수 있었다. 불확실한 고용환경의 변화와 높은 청년 실업률과 함께 직업의 종류가 매우 다양해지고 고도로 전문화되면서 대학생이 자신에게 적합한 진로 결정에 대한 어려움이 가중되고 있다. 현 상황에서 본 연구의 결과는 대학에서의 진로 상담과 진로 지도에 활용할 수 있는 대학생의 진로 결정에 대한 기초 자료를 제공할 수 있을 것이다.

• 한국콘텐츠학회논문지
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• 제16권1호
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• pp.541-557
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• 2016

본 연구의 목적은 치과서비스를 대상으로 서비스 개별성, 서비스 능력, 서비스 공감성 등 서비스특성이 신뢰, 감정적 몰입 및 계산적 몰입에 미치는 영향력을 확인하고, 또한 신뢰, 감정적 몰입, 계산적 몰입, 고객 충성도 관계를 확인함으로써 감정적 몰입과 계산적 몰입의 인과적 역할을 설명하는데 있다. 본 연구는 SPSS 20.0 및 AMOS 16.00 통계패키지를 이용하여 구조방정식모형분석으로 연구가설을 검증하였다. 분석 결과 첫째, 서비스개별성은 감정적 몰입에 영향을 주었고, 서비스능력은 신뢰에 영향을 주었으며, 서비스공감성은 감정적 몰입 및 신뢰에 영향을 주었지만, 계산적 몰입은 어떠한 서비스특성에 영향을 받지 않았다. 둘째, 신뢰는 감정적 몰입에는 영향을 주지 않은 반면 계산적 몰입 및 고객 충성도에는 긍정적인 영향을 주었다. 셋째, 감정적 몰입 및 계산적 몰입은 고객 충성도에 긍정적인 영향을 주었다. 따라서 치과서비스제공자는 이용자에게 서비스 능력과 공감성을 제시하여 신뢰를 높이고, 서비스 개별성과 공간성으로 감정적 몰입을 높이는 차별적 관계형성이 필요할 것이다. 또한 신뢰가 형성된 고객은 직접적으로 고객충성도를 유도하거나 또는 다양한 혜택을 제시하여 간접적으로 고객충성도를 구축해야 하며, 감정적 애착이 높은 고객은 강력한 고객충성도를 구축할 수 있도록 적합한 마케팅전략을 제시해야할 것이다.

• 유통과학연구
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• 제10권11호
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• pp.79-88
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• 2012

Purpose - The objective of this paper is to suggest that a company's CRM activities have an effect on customer loyalty in the Korean retail industry. Typically, Korean customers use large local marts with convenience in the absence of any other choice. Therefore, this study aims to shed light on the fact that customers do not break away from their preferred retail stores, either owing to their stringent loyalty (the lie loyalty) or difficulty in turning to alternative choices. Research design, data, methodology - By surveying a sample of 200 hyper-markets through a questionnaire, and excluding dubious and missing responses, I obtained 181 samples to be included in the empirical analysis. The survey was conducted for two weeks during October 2011. AMOS and SPSS18 statistical packages were used for conducting statistical analysis for this study. This paper was developed using the concept of customer equity on CRM, which is known to have a positive impact on customer loyalty through the satisfaction and switching-barrier parameters. The hypothesis of this paper is that customer equity is composed of relationship equity, value equity and brand equity, and that the relationship equity variable has positive effects on the value equity and brand equity amongst other types of customer equity. Moreover, customer equity influences customer loyalty through parameters including customer satisfaction and switching costs in the Korean retail industry. Results - According to the results of the analysis, it was confirmed that relationship value had a positive effect (+) on all variables, including the perceived QoS (Quality of Service), store brand images, economic value, and store convenience. It was also confirmed that the assumption that the perceived QoS (Quality of Service), economic value, and store convenience had a positive effect on customer satisfaction was shown to be statistically significant, with a p-value below 0.05. Only the store brand value variable had an effect on the switching-cost variable with respect to the causal sequence of the variables, including the perceived QoS, store brand value, economic value, and store convenience. The remaining variables did not seem to influence the switching-cost variable. On the other hand, another effect showed that customer satisfaction had a statistically significant influence on the switching-costs variable. Moreover, the customer satisfaction and switching-cost variables also had a statistical influence on customer loyalty. Conclusions - The CRM activities had an influence on various variables (including perceived QoS, perceived economic value, store brand value, and store convenience) pertaining to customer values. Customer satisfaction and switching-cost had some effects on customer loyalty as a parameter. This confirms that stringent loyalty exists with respect to customer loyalty in the retail industry. The fact that the variable had such a statistically significant influence on the switching-cost and store brand equity variables means that consumers react to the reputation of a brand, confidence about the store, and quality confidence. The implications of this study in the retail industry should be further extended to devise strategies for customer retention.

• Journal of Preventive Medicine and Public Health
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• 제53권6호
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• pp.476-486
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• 2020

Objectives: The objective of this study was to estimate the risk of lung cancer in relation to angiotensin II receptor blocker (ARB) use among patients with hypertension from the Korean National Health Insurance Service-National Health Screening Cohort. Methods: We conducted a retrospective cohort study of patients with hypertension who started to take antihypertensive medications and had a treatment period of at least 6 months. We calculated the weighted hazard ratios (HRs) and their 95% confidence intervals (CIs) of lung cancer associated with ARB use compared with calcium channel blocker (CCB) use using inverse probability treatment weighting. Results: Among a total of 60 469 subjects with a median follow-up time of 7.8 years, 476 cases of lung cancer were identified. ARB use had a protective effect on lung cancer compared with CCB use (HR, 0.75; 95% CI, 0.59 to 0.96). Consistent findings were found in analyses considering patients who changed or discontinued their medication (HR, 0.50; 95% CI, 0.32 to 0.77), as well as for women (HR, 0.56; 95% CI, 0.34 to 0.93), patients without chronic obstructive pulmonary disease (HR, 0.75; 95% CI, 0.56 to 1.00), never-smokers (HR, 0.64; 95% CI, 0.42 to 0.99), and non-drinkers (HR, 0.69; 95% CI, 0.49 to 0.97). In analyses with different comparison antihypertensive medications, the overall protective effects of ARBs on lung cancer risk remained consistent. Conclusions: The results of the present study suggest that ARBs could decrease the risk of lung cancer. More evidence is needed to establish the causal effect of ARBs on the incidence of lung cancer.