• 한국정보시스템학회지:정보시스템연구
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• 제29권4호
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• pp.193-208
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• 2020

Purpose Due to COVID19, the over-the-top media service (OTT) market is growing faster than expected at an annual average of 26.4%. In Korea, WAVVE, which integrated SKT's Oksusu and POOQ in September 2019, outperformed Netflix in the number of users immediately after its launch, but the number of users gradually decreased. Research on OTT investigated the spread of new media due to changes in regulations or policy, mostly in broadcasting media. On the other hand, OTT research in information systems began after the success of Netflix. It investigated consumers' satisfaction with information technology using the Information Technology Acceptance Model (TAM). This study investigates changes in consumer perceptions in the OTT market, which has grown after the Netflix's entry into Korea, the emergence of WAVVE and new OTT service providers, and the spread of COVID19. Design/methodology/approach This study selects contents, fees, service quality, and additional services as factors to evaluate consumer perception using AHP. Findings According to the 101 respondents, the content was the most important factor, followed by service quality, fees, and additional services. Contrary to previous findings that price is the determining factor in service adoption, this study reveals that consumers are willing to pay a reasonable amount for rich content and excellent service quality. Future research will use demographic analysis to reveal differences in consumer's perceptions of service selection.

• 보건행정학회지
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• 제32권1호
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• pp.45-52
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• 2022

Background: There are regional variations in the incidence of coronavirus disease 2019 (COVID-19), which means that some regions are more exposed to the risk of COVID-19 than others. Therefore, this study aims to investigate regional variations in the incidence of COVID-19 in Korea and identify risk factors associated with the incidence of COVID-19 using community-level data. Methods: This study was conducted at the districts (si·gun·gu) level in Korea. Data of COVID-19 incidence by districts were collected from the official website of each province. Data was also obtained from the Korean Statistical Information Service and the Community Health Survey; socio-demographic factor, transmission pathway, healthcare resource, and factor in response to COVID-19. Community risk factors that drive the incidence of COVID-19 were selected using a least absolute shrinkage and selection operator regression. Results: As of June 2021, the incidence of COVID-19 differed by more than 80 times between districts. Among the candidate factors, sex ratio, population aged 20-29, local financial independence, population density, diabetes prevalence, and failure to comply with the quarantine rules were significantly associated with COVID-19 incidence. Conclusion: This study suggests setting COVID-19 quarantine policy and allocating resources, considering the community risk factors. Protecting vulnerable groups should be a high priority for these policies.

• 농업과학연구
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• 제49권3호
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• pp.607-617
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• 2022

As the number of households raising pets increases, the pet food industry is also growing. Since pets cannot express their intention explicitly, it appears that the owner's perception mainly affects the selection of products related to pets. In this study, consumers were categorized based on their interest in food choices and the factors influencing their interest in pet food were empirically analyzed. For the analysis, a cluster analysis, factor analysis, and Tobit analysis were conducted using consumer survey data for raising companion animals. The major findings of the study were as follows. As a result of the factor analysis and cluster analysis using questions for consumers' food consumption choices, consumer types were classified into high-interest, low-interest, and practical-seeking types. The degree of interest in pet food was high in the order of high-interest, practical-seeking, and low-interest type. Demographic characteristics such as gender, education, and household type correlate with differences in the degree of interest in pet food, and the food selection criteria of consumers also affect the degree of interest in pet food. These results show that consumers who are more interested in their food choices are more interested in pet food, and this will make possible to know pet owner's purchasing behavior for pet food.

• 한국프랜차이즈경영연구
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• 제14권3호
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• pp.53-67
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• 2023

Purpose: This study aims to explore the shopping motivations of consumers at South Korean convenience stores and create distinct consumer segments based on these motivations. Additionally, the research seeks to propose tailored marketing strategies for convenience stores by analyzing consumer demographics and satisfaction levels within each segment. Research design, data and methodology: Using factor analysis, we identify three primary shopping motivation factors: "social/leisure," "functional," and "convenience." Subsequently, we use cluster analysis to group convenience store consumers into three categories: the "convenience-seeking group," the "function/convenience-seeking group," and the "multipurpose-seeking group." To gain a deeper understanding of each consumer segment, we investigate how demographic factors relate to their levels of satisfaction. Results: These findings offer valuable insights for adapting to shifting consumer preferences and the increasingly competitive landscape of South Korean convenience stores, especially in the expanding services offered by online businesses. Conclusions: This research emphasizes the significance of developing marketing strategies tailored to address the distinctive needs and preferences of individual consumer segments. These strategies empower convenience stores to establish a competitive advantage in the market.

• Asian Pacific Journal of Cancer Prevention
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• 제13권11호
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• pp.5665-5669
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• 2012

Background: The vascular endothelial growth factor (VEGF) mediates vasculogenesis and angiogenesis through promoting endothelial cell growth, migration and mitosis, and has involvement in cancer pathogenesis, progression and metastasis. However, the prognostic value of VEGF in patients with prostate cancer remains controversial. Objectives: The aim of our study was to evaluate the prognostic value of VEGF in prostate cancer, and summarise the results of related research on VEGF. Methods: In accordance with an established search strategy, 11 studies with 1,529 patients were included in our meta-analysis. The correlation of VEGF-expression with overall survival and progression-free survival was evaluated by hazard ratio, either given or calculated. Results: The studies were categorized by introduction of the author, demographic data in each study, prostate cancer-relatived information, VEGF cut-off value, VEGF subtype, methods of hazard ratio (HR) estimation and its 95% confidence interval (CI). High VEGF-expression in prostate cancer is a poor prognostic factor with statistical significance for OS (HR=2.32, 95%CI: 1.40-3.24). However, high VEGF-expression showed no effect on poor PFS (HR=1.30, 95%CI: 0.88-1.72). Using Begg's, Egger's test and funnel plots, we confirmed lack of publication bias in our analysis. Conclusion: VEGF might be regarded as a prognostic maker for prostate cancer, as supported by our meta-analysis. To achieve a more definitive conclusion enabling the clinical use of VEGF in prostate cancer, we need more high-quality interventional original studies following agreed research approaches or standards.

• 융합정보논문지
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• 제10권10호
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• pp.279-289
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• 2020

본 연구의 목적은 뷰티종사자의 재미요인이 직무열의 및 자기효능감에 미치는 영향을 규명하는 것이다. 본 연구의 목적을 달성하기 위하여 서울, 경기 지역 뷰티종사자 324명을 연구대상으로 선정하였다. 연구목적을 규명하기 위한 자료처리는 연구대상의 인구사회학적 변인에 대한 빈도분석, 각 요인별 신뢰도 검증, 요인분석을 실시하였으며, 재미요인, 직무열의 및 자기효능감의 상관관계분석을 사용하였다. 변인들 간의 미치는 영향을 알아보기 위해 다중회귀분석(multi-regression)을 실시하였으며, 이와 같은 연구절차를 거쳐 다음과 같은 연구결과를 도출하였다. 첫째, 뷰티종사자의 재미요인이 직무열의에 미쳤다. 둘째, 뷰티종사자의 재미요인이 자기효능감에 영향을 미쳤다, 셋째, 직무열의가 자기효능감에 영향을 미쳤다.

• 한국의상디자인학회지
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• 제9권1호
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• pp.221-234
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• 2007

The purposes of this study were to identify the effect of clothing involvement and shopping orientations on the usage of information sources and to investigate the differences of clothing involvement, shopping orientation and clothing purchasing behavior according to the types of information source usage. The study subjects comprised 302 females living in Seoul. The datas were analyzed with factor analysis, regression, ANOVA, discriminant analysis, and $x^2$-test. The results generated from this study are as follows: First, clothing involvement and shopping orientation factors influenced the usage of information source. Among the clothing involvement factors, fashion/clothing involvement was the most important factor to the types of information source. Second, according to usage of information sources, female consumers were classified into four groups, such as active, nonpersonal, personal, and non-active information source usage group. Fashion/clothing involvement was the most significant involvement factor to divide four groups. Third, among the demographic variables, only age was the useful factor which can differ the usage of information source. For example, 30s' were more active than other groups, on the other hand 50s' use personal information source more than other groups. Therefore, marketer should blow consumer's clothing involvement and shopping orientation which are effective to the usage of information source, and use this knowledge on the advertising and marketing plan.

• Asian Pacific Journal of Cancer Prevention
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• 제15권14호
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• pp.5753-5757
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• 2014

Background: The purpose of this study is to determine whether the IGF1R expression has a prognostic role in non-small cell lung cancer. Materials and Methods: Forty-seven patients histopathologically diagnosed with small cell lung cancer upon bronchoscopic biopsy or resection materials were included in the study. IGF1R expression was examined via immunohistochemical methods. In samples, >10% staining were assessed as positive and ${\leq}10%$ as negative. Information about demographic datas and treatments was obtained by retrospective searches of patient files. Results: IGF1R expression was determined as positive in 38 (80.9%) and as negative in 9 (19.1%) patients. There was no significant relation between IGF1R expression and histological sub-type, local invasion, lymph node and metastasis status (p=0.842, p=0.437, 0.064, 0.447, respectively). There was also no correlation with IGF1R expression and survival (p=0.141). Conclusions: There are conflicting results between IGF1R and its prognostic effects in the various studies. It has been claimed in some studies it is not related to prognosis as in our study, and in some studies it has been claimed that it is a good prognostic factor whereas in some studies it has been claimed as being a factor for worse prognosis. We think that IGF1R expression in non-small cell lung carcinoma patients deserves further analysis, because of its potential prognostic and predictive roles.

• 한국산학기술학회논문지
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• 제10권5호
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• pp.1052-1059
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• 2009

본 논문의 연구목적은 차세대의 국가 경세의 성장엔진으로 알려진 의료관광 산업의 성공적인 발전을 위한 주요성공요인(CSF)을 개발하는 것이다. 이를 위해서 연구자는 실험적이고 확정적인 요인 분석을 실시하여 주요성공요인을 생성하였고, 이들 요인들의 신뢰성과 타당성을 조사하였다. 본 연구를 위해 76명의 의료관광 분야의 전문가가 본 연구가 실시한 설문조사에 참여하였다. 설문지는 모두 51개항의 질문으로 구성되었으며, 이들이 성공적인 의료관광의 주요성공요인 도출을 위한 측정지표가 된다. 본 연구를 통해서 생성된 요인은 모두 15가지이다. 요인분석으로 성과측정지표를 개발한 후에는 이들 요인들 사이의 중요도를 계층분석기법(AHP)으로 분석하였다. AHP 분석의 결과로 주요성공요인들 사이의 중요도출 측정할 수 있었다. 본 연구의 결과는 급변하는 의료환경에서 각 의료기관들이 의료관광 시장에서 경쟁력을 확보할 수 있도록 방향과 기준을 제시할 수 있을 것이다.

• Journal of Nutrition and Health
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• 제56권5호
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• pp.523-536
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• 2023

Purpose: This study investigated the association between sleep problems and food allergies (FAs) in Chinese preschoolers and assessed whether there is a difference in this association among children with/without siblings. Methods: A cluster-stratified sampling approach was employed to select four districts in Chongqing based on demographic considerations. A total of 16 kindergartens (n = 966 parents) participated in this study. Parents completed the Children's Sleep Habits Questionnaire (CSHQ) and a standard FAs questionnaire. Analysis of covariance and multiple logistic regression were used to assess the associations between sleep problems and FAs after adjusting for relevant confounders. Results: The study found that 16.3% of children had FAs, with eggs, shellfish, and fruit being the most common allergenic foods. The prevalence of FAs was significantly higher in single children (20.63%) than in children with siblings (13.36%). A total of 70.39% of children had CSHQ scores above the clinical cut-off for sleep disorder. Factor analysis revealed five underlying dimensions from the CSHQ. Factor scores, except for the 'difficulty morning waking' factor, were not significantly different between the two groups. Remarkably, the factor scores of 'parasomnias' and 'sleep anxiety' were significantly higher when children had both siblings and FAs. For all subjects, the odds ratios (ORs) of FAs significantly increased with the presence of sleep disorder (OR, 2.35; 95% confidence interval [CI],1.50-3.68) and 'difficulty falling asleep' (OR, 1.34; 95% CI, 1.22-1.48). The subgroup analysis showed that the probability of FAs significantly increased with the 'difficulty falling asleep' (OR, 1.32 vs. 1.38) and sleep disorder (OR, 2.48 vs. 2.14) in children with and without siblings, respectively. The 'parasomnias' was positively associated only with children with siblings. Conclusion: This study suggests that children with siblings might be more susceptible to FAs when accompanied by certain sleep problems. Further studies are warranted to address the underlying dimensions and possible mediation effects of having siblings with sleep problems.