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박원갑(Park, Won Gap),강병기(Kang, Byung Gi),김갑열(Kim, Gab Youl),이국철(Lee, Kook Chul) 한국부동산학회 2008 不動産學報 Vol.35 No.-
1. CONTENTS (1) RESEARCH OBJECTIVES The purpose of this study is to analyze the influence of 5 competition factors on the performance of real estate information service companies and deduce the core competition factors using the industrial structure analysis model(the Five Forces Model) of Porter. (2) RESEARCH METHOD Multiple regression analysis was performed to determine whether and how much each competition factor has an impact on the company's performance. ANOVA and t-test were applied to identify whether the business performance is different depending upon the business characteristics variables. Regression analysis was performed to test the moderating effect whether the relation between competition factors and business performance is changed depending upon the levels of business characteristics variables. (3) RESEARCH RESULTS Threats by alternative services and strength of consumers' negotiation power were found to have reverse relationship with the performance of real estate information service company. The performance of real estate information service company was found to be different depending upon the service types and the portion of online business. The portion of online business was found to act as a moderating variable in the relationship between competition factors and business performance. However, service types were found to act as a moderating variable only to the threat by PR-focused alternative services and consumers' negotiation power of low-priced service types. 2. RESULT Firstly, when empirical analysis was performed to real estate information service enterprises, threats by alternative services was found to give the largest negative influence to business performance. That is, it is difficult to improve the business performance without reducing the threat by the major internet portal such as Naver. The measures to improve the preference of the products and services should urgently be sought against the threat by alternative services. Secondly, the consumers' negotiation power was found to give the largest negative influence to business performance next to alternative services. It is needed to real estate information service companies to differentiate the information and improve the credibility and quality of services to reduce consumers' negotiation power. Thirdly, many real estate information service enterprises aim at PR-focused services to improve the performance in a short time. When the endeavors are aimed at PR service with neglecting the quality improvement of information services, such endeavors will result in obstacles interfering with the continuous growth of enterprises due to secession of consumers in the long-term view. Therefore, the competitiveness should be improved by the method to strengthen the basic information function of real estate information service company.
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박종범 ( Park Jong Beom ),박원갑 ( Park Won Gab ),윤서구 ( Yun Seo Gu ),김현식 ( Kim Hyeon Sig ),이종균 ( Lee Jong Gyun ) 대한소화기학회 2003 대한소화기학회 추계학술대회 Vol.2003 No.-
<목적> 원인 미상의 궤양성 대장염은 최근 국내에서도 그 발생이 점차 증가하고 있으며, 궤양성 대장염의 임상 양상에 관한 보고도 증가하고 있다. 그러나, 이전의 국내 보고는 대부분이 대학 병원에 국한되어 있어, 국내 궤양성 대장염 환자의 진단 시 일반적인 특성을 파악하기에는 어려움이 있었다. 이에 저자들은 1차 의료 기관에서 처음으로 진단된 궤양성 대장염 환자들만을 대상으로 하여 진단 시 임상 양상을 알아보고자 하였다. <방법> 송도병원의 궤양성 대장염
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한국인 가족성 염증성 장질환에서 유전학적예기(Genetic Anticipation)에 대한 연구
이병욱 ( Byoung Wook Lee ),김효종 ( Hyo Jong Kim ),양석균 ( Suk Kyun Yang ),박종범 ( Jong Beom Park ),정용희 ( Yong Hee Jeong ),한요셉 ( Yo Seb Han ),박원갑 ( Won Gab Park ),동석호 ( Seok Ho Dong ),김병호 ( Byung Ho Kim ),장영운 ( 대한장연구학회 2003 Intestinal Research Vol.1 No.1
Background/Aims: Several recent epidemiologic studies in familial inflammatory bowel disease (IBD) reported preliminary evidences for genetic anticipation in IBD. However, presence of genetic anticipation in IBD has been questioned. We studied pairs of two-generation first-degree relatives with IBD to identify evidence for genetic anticipation in Korean patients with familial IBD and to know the influence of gender of transmitting parent on anticipation in IBD. Methods: Through retrospective review of the records of 11 parent-child pairs with IBD, we compared age at diagnosis (AAD) and severity of disease between generations and investigate difference in the degree of anticipation with respect to gender of transmitting parent. Results: At the time of study enrollment, the mean age of parents was 56.2 years and 29.1 years in children. Diagnostic intervals (time from first symptoms to diagnosis) between generations were similar (p=0.307). The mean AAD was 21.7 years younger in children than in parents (p<0.001). But, the degree of anticipation was not different according to gender of transmitting parents (p=0.369). Also, severities of disease were not significantly different between generations. Conclusions: Genetic anticipation may exist in Korean patients with familial IBD but, further studies with larger cohorts and sufficient observation time is warranted to rule out the effect of short follow-up time bias. (Intestinal Research 2003;1:31-38)
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