• Radiation Oncology Journal
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• 제30권1호
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• pp.14-19
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• 2012

Purpose: We collected the data of Science Citation Index (SCI) and SCI Expended (SCIE) papers written by the members of the Korean Society of Radiation Oncology (KOSRO) to analyze the current status and the future trend. Materials and Methods: We searched the database of SCIE for the period from 1981 to 2011 at the Web of Knowledge site. Articles, reviews or proceedings written by KOSRO members as the first or corresponding authors were included. Search terms were the following combination of subject headings: therapeut radiol, radiat oncol, Korea. For National Cancer Center, combined search terms such as natl canc ctr, Korea and the names of faculties were applied. Results: The total number of SCIE papers was 547. Numbers of the published papers in 1995, 2000, 2005, and 2010, were increased continuously, which was 2, 14, 40, and 83, respectively. The average impact factor was 2.9. The papers were published at the 134 different journals. The proportion of "International Journal of Radiation Oncology Biology Physics" was 23.4% of all the papers. The number and proportions of papers by subject categories were 87 (15.9%) in biology, 73 (13.3%) in physics and 387 (70.6%) in clinics. The papers of the top five institutions, based on the number of published papers, occupied 66.3%. Conclusion: The number of SCIE papers is increasing rapidly in the field of radiation oncology in Korea. To improve the quality of papers, multi-institutional retrospective or prospective randomized studies should be done for the common cancers in Korea.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 추계학술대회
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• pp.419-424
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• 2004

we performed the underwater explosion analysis for the liquefied oxygen tank - a kind of fuel tank of a mid-size submarine, and tried to verify the structural safety for this structure. First, we reviewed the theory and application of underwater explosion analysis using Structure-Fluid Interaction technique and its finite element modeling scheme. Next, we modeled the explosive and sea water as fluid elements, the LOX tank as structural elements and the interface between two regions as ALE scheme. The effect on shock pressure and impulse of fluid mesh size and shape are also investigated. As the analysis result, the shock pressure due explosion propagated into the water region and hit the structure region. The plastic deformation and the equivalent stress highly appeared at the web frame and the shock mount of LOX structure, but these values were acceptable for design criteria.

• The Journal of Asian Finance, Economics and Business
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• 제7권4호
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• pp.173-183
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• 2020

This study has four objectives: (1) Identifying factors that affect customer satisfaction on online service quality of Tiki.vn, (2) Measuring the level of impact of the factors, (3) Testing the difference in satisfaction among groups of customers with different characteristics in terms of gender, age, income, academic level, and occupation, and (4) Proposing some managerial implications to improve the quality of online services by interviewing directly and online 200 individual customers who have shopped at Tiki.vn E-commerce platform for at least the last six months, using the convenient sampling method. This study analyzes the reliability of the scale through the Cronbach's alpha coefficient, Exploratory factor analysis, and Linear regression analysis. The findings identified four factors that influence positively customer satisfaction regarding the quality of online services in Tiki.vn E-commerce platform in the order of descending strength: (1) Trust, (2) Customer service, (3) Web design and (4) Safety. In addition, the results show no difference in customer satisfaction according to different academic levels, but in terms of occupation and income, gender, and age. The results show that the factors influencing most customer satisfaction are Reliability and Customer Service. Some managerial implications are then proposed to improve the quality of online shopping services at Tiki.vn.

• 한국해양공학회지
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• 제19권1호
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• pp.20-25
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• 2005

The authors performed the underwater explosion analysis for the liquified oxygen tank - a kind of fuel tank of a mid-size submarine, and tried to verify the structural safety for this structure. First, the authors reviewed the theory and application of underwater explosion analysis, using a Structure-Fluid Interaction technique and its finite element modeling scheme. Next, the authors modeled the explosive and sea water as fluid elements, the LOX tank as structural elements, and the interface between the two regions as the ALE scheme. The effect on shock pressure and impulse of fluid mesh size and shape are also investigated. Upon analysis, it was found that the shock pressure due to explosion propagated into the water region, and hit the structure region. The plastic deformation and the equivalent stress were apparent at the web frame and the shock mount of LOX structure, but these values were acceptable for the design criteria.

• 한국의류학회지
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• 제36권11호
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• pp.1137-1147
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• 2012

Self-congruency plays an important role in the context of mothers' shopping for children's clothing because purchasers are inconsistent with users. This study incorporates three dimensions of self-congruencies (congruency between children's image perceived by their mothers and brand image, congruency between mothers' actual self-image and brand image, and congruency between mothers' ideal self-image and brand image) due to purchaser-user inconsistency in children's clothing consumption. A total of 574 mothers with children aged 6 to 10 participated in a web-based survey. Descriptive statistical analysis, factor analysis, reliability analysis and multiple regression analysis were conducted. Self-brand image congruency variables have a different influence on brand attitudes when mothers purchase children's clothing. Brand attitude is influenced positively only when the perceived children's image coincides with brand image and when mothers' ideal self-image corresponds to brand image. In contrast, mothers' actual self-image and brand image congruence negatively influence brand attitude. Further investigation indicates that there are different effects of dimensions of self-congruency on brand attitude according to the characteristics of mothers and their children. This study suggests that when there is purchaser-user inconsistency, different types of image congruence has to be implemented to assess the impact on brand attitudes.

• 보건의료산업학회지
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• 제13권4호
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• pp.1-8
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• 2019

Objectives: This study is prepared to understand the past of the KJHSM (Korean Journal of Health Service Management), to analyze the papers in the KJHSM, to identify the research trends during 2007~2018, and to help the future development of research. Methods: The data for the objectives was collected major KCI index and key words of the articles in KCI web site. Results: The KJHSM has good performaces that KCI IF(2 year) is 0.98, Centrality Index(3 Year) is 1.188, Immediacy index is 0.19, and Self Citation Rate(2 Year) is 25.81. Conclusions: In order to improve the academic quantity and quality in the KSHSM, we will need the vision to corporate and participate through more good research results and performance with desirable ethic value.

• 유통과학연구
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• 제13권9호
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• pp.81-93
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• 2015

Purpose - "Showrooming" refers to the phenomenon where a shopper visits a store to see and compare products but makes the purchase online at a lower price. Surveys on showrooming activities at home and abroad indicate that a significant number of consumers pursue showrooming activities. The advent of "showroomers," who engage in buying activities, hovering both on and offline, while selectively choosing sales channels to suit their needs, is powerful enough to erode the borders between channels and bring about seismic changes in the distribution industry. However, surprisingly, there has been no in-depth discussion on showrooming. This study seeks to theoretically investigate what impact personal characteristics have on showrooming preferences and attitudes in a multi-channel environment. Specifically, assumptions have been made that price perception, perceived performance risk, and trust in online shopping not only have a direct impact on showrooming attitudes but also indirectly affect it through the means of contact motivation. Research design, data, and methodology - To test the hypotheses, this study conducted a survey of male and female shoppers, ages 20 through 40s, who live in metropolitan areas, and have actively showroomed fashion items in the last six months. A clothing item usually purchased after a careful decision-making process was chosen as the target product of the study. The survey was conducted between October and November 2014, using a professional survey service provider. A total of 200 surveys were collected, of which 198 were used for analysis. Conceptual model Structural Equation Modeling (SEM) and Amos 18.0 were employed for data analysis and model verification. In addition, following the confirmatory factor analysis and measurement model analysis, the theoretical model that corresponds to the research model was analyzed. Results - Analysis results show that price perception, perceived performance risk, and trust in online shopping have a statistically significant and positive (+) impact on showrooming attitudes. In addition, in terms of the indirect influence of price perception and perceived performance risk on showrooming attitudes through means of contact motivation, price perception had a statistically significant and positive impact on means of contact motivation, whereas perceived performance risk did not have a statistically significant impact on it, with the relevant hypothesis rejected. Conclusions - These analysis results imply that the ultimate goal of consumers is to maximize their shopping benefits by selectively and strategically taking advantage of different channels in a complementary manner. This study presents many implications for distributors to encourage a deep understanding of showrooming consumers who have complicated consumption behaviors and to build channel integration strategies. This study has limitations in theoretical and practical implications. Therefore, subsequent studies need to focus on verifying that showrooming activities are based on reasonable and planned decisions by applying the theory of reasoned or planned behavior. In addition, the scope of the study should expand to include web showrooming, where consumers conduct product research online and purchase offline.

• 경영정보학연구
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• 제18권3호
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• pp.209-233
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• 2016

최근 소셜 네트워크 기반으로 하는 인터넷 기업의 등장은 빠른 성장세에 있으며, 다양한 소셜 미디어 서비스 출현으로 e-비즈니스에 혁신적인 변화를 일으키고 있다. 웹(web) 상에서 지인(知人)과의 인간관계를 강화시키고, 새로운 인간관계를 형성할 수 있도록 지원하는 소셜 네트워크 서비스(Social Network Service, SNS)는 소셜 미디어 영역 중 하나이다. 이러한 소셜 네트워크 서비스 시장의 급속한 성장과 이에 따른 수익창출, 미디어 분야의 새로운 성장 동력으로의 인식으로 많은 글로벌 IT기업들이 소셜 네트워크 서비스를 가장 강력한 소셜 미디어로 인식하고 있으며, 소셜 네트워크 서비스를 이용한 다양한 비즈니스 모델 개발에 힘쓰고 있다. 본 연구는 개인정보에 대한 자기노출을 다룬 중요한 요인인 프라이버시 침해의 미인식, SNS 사용목적, 개인정보의 중요성 인식을 통해 소셜 네트워크 서비스의 노출행동에 대한 영향력을 검증하고자 한다. 또한 개인의 특정 행위, 감정적 반응을 기술하기 위한 이론적 기반을 제공하고 있는 합리적 행위이론 (Theory of Reasoned Action)을 바탕으로 소셜 네트워크 서비스에서의 자기노출에 대한 영향요인이 TRA의 행위에 대한 태도(Attitude Toward Behavior)로서의 부정적 태도(Negatude), 주관적 규범(Subjective Norm), 행위의도(Behavioral intention), 그리고 노출행동의 주요 변수들을 적용한 연구모형을 제시하였다. 위 연구모형을 실증적으로 검증하기 위해 소셜 네트워크 서비스를 이용한 경험이 있는 서울 소재 Y대학의 대학생들을 대상으로 설문조사를 실시하였다. 설문조사를 통해 총 198부의 표본을 수집하였으며, 요인들 간의 관계를 분석하기 위해 경로분석을 실시하였다. 경로분석 결과, 프라이버시 침해 미인식이 부정적 태도. 주관적 규범, 행위의도, 노출행동에 미치는 영향은 모두 유의미하지 않게 나타나 가정된 경로모형에서 프라이버시 침해의 미인식의 영향력은 유의미하지 않는 것으로 나타났다. SNS 사용목적이 부정적 태도, 주관적 규범, 행위의도, 노출행동에 미치는 영향은 모두 유의미하게 나타났으며, 개인정보의 중요성 미인식은 주관적 규범, 행위의도, 노출행동에 미치는 영향력은 유의미하였으나, 부정적 태도에 미치는 영향은 유의미하지 않았다. 그리고 부정적 태도와 주관적 규범이 행위의도에 미치는 영향은 유의미하여, 부정적 태도가 낮을수록 행위의도가 높게 나타났으며, 마지막으로 행위의도가 노출행동에 미치는 영향은 유의미하지 않는 것으로 나타났다. 이를 통해 자기노출 과정을 이론적 논의를 토대로 심리적, 사회적 변인들을 통합하여 살펴보았다는 점에서 의미가 있다고 할 수 있다.

• 방송공학회논문지
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• 제18권5호
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• pp.749-757
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• 2013

본 연구는 N 스크린 서비스의 이용 행태(교차이용, 개인별 단말기 보유량, N 스크린 이용을 위한 지불금액, N 스크린 이용시간), 콘텐츠 특성(채널의 다양성, VOD의 다양성), 기능적 요인(시스템품질, 인터페이스, 결제시스템), 비용에 대한 이용자의 인식이 이용만족도와 지속이용의사에 미치는 영향을 살펴보았다. N 스크린 유료 경험이 있는 이용자를 대상으로 (N=498), 웹을 통한 설문조사를 한결과, 이용만족도에 가장 큰 영향을 미치는 요인은 기능적 요인 중 인터페이스로 나타났으며, 결제시스템, VOD의 다양성, 채널의 다양성, 비용 순으로 유의한 변인인 것으로 나타났다. 본 연구는 이용자 차원에서 N 스크린 서비스 만족에 영향을 주는 요인들을 밝혀냄으로써, 스마트 미디어 환경에서 OTT 서비스 활성화를 위한 기초 자료를 제공하는 데 의의가 있다.

• Asian Pacific Journal of Cancer Prevention
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• 제16권5호
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• pp.1881-1895
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• 2015

Background: The vascular endothelial growth factor family has been implicated in tumorigenesis and metastasis. The prognostic value of each vascular endothelial growth factor family member, particular VEGF/VEGFR co-expression, in patients with non-small lung cancer remains controversial. Materials and Methods: Relevant literature was identified by searching PubMed, EMBASE and Web of Science. Studies evaluating expression of VEGFs and/or VEGFRs by immunohistochemistry or ELISA in lung cancer tissue were eligible for inclusion. Hazard ratios (HRs) and 95% confidence intervals (CIs) from individual study were pooled by using a fixed- or random-effect model, heterogeneity and publication bias analyses were also performed. Results: 74 studies covering 7,631 patients were included in the meta-analysis. Regarding pro-angiogenesis factors, the expression of VEGFA (HR=1.633, 95%CI: 1.490-1.791) and VEGFR1 (HR=1.924, 95%CI: 1.220-3.034) was associated separately with poor survival. Especially, VEGFA over-expression was an independent prognostic factor in adenocarcinoma (ADC) (HR=1.775, 95%CI: 1.384-2.275) and SCC (HR=2.919, 95%CI: 2.060-4.137). Co-expression of VEGFA/VEGFR2 (HR=2.011, 95%CI: 1.405-2.876) was also significantly associated with worse survival. For lymphangiogenesis factors, the expression of VEGFC (HR=1.611, 95%CI: 1.407-1.844) predicted a poor prognosis. Co-expression of VEGFC/VEGFR3 (HR=2.436, 95%CI: 1.468-4.043) emerged as a preferable prognostic marker. Conclusions: The expression of VEGFA (particularly in SCC and early stage NSCLC), VEGFC, VEGFR1 indicates separately an unfavorable prognosis in patients with NSCLC. Co-expression VEGFA/VEGFR2 is comparable with VEGFC/VEGFR3, both featuring sufficient discrimination value as preferable as prognostic biologic markers.