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해외건설공사 수익성 영향인자의 계층구조 및 사레적용에 관한 연구
한승헌,선승민,박상혁,정도영,Han, Seung-Heon,Sun, Seung-Min,Park, Sang-Hyuk,Jung, Do-Young 한국건설관리학회 2006 건설관리 : 한국건설관리학회 학회지 Vol.7 No.5
Korea's overseas construction industry has been rather depressed by the weakened profitability as well as the sharp decrease of the market shares due to the lack of international competitiveness and the declined international market. There exist a lot of various risks in performing the overseas construction, and especially EPC projects, which entail complicated process from different parts, also require a sophisticated procurement and management skill. Subsequently, to survive in the competitive international market, we need to establish strategies to select potentially profitable projects at the initial stage of bidding process and to mitigate the high degree of risk exposure through contract negotiation and its adjustment. This research discusses the trend of environment in international construction markets. Then, it identifies the key factors that affect the profitability significantly through the structured surveys from 59 actual overseas projects, and it analyzes the key factors by using statistical methods. This research provides the profitability evaluation bases, with which overseas construction participants can forecast and analyze the risk more systematically, by eliciting profit-influencing factors using the result of statistical analysis, literature review and structuring their cause-and-effect relationships. The profitability casual hierarchy structure describes the profitability factors' hierarchy in details and their interrelationships. It also enables us to find out critical factors directly related to profitability aggravation through a qualitative and quantitative analysis. Ultimately, with this hierarchy structure as the base, the research will suggest how to develop the quantitative profitability forecasting model.
CLS expansion컵을 이용한 고관절 전치환술에서 금속 비구컵의 파손 - 증례 보고 -
윤의성 ( Ui Seoung Yoon ),민학진 ( Hak Jin Min ),서재성 ( Jae Sung Seo ),김진수 ( Jin Soo Kim ),선승민 ( Seung Min Sun ) 대한고관절학회 2007 Hip and Pelvis Vol.19 No.4
Acetabular metal shell breakage is very rare after a total hip replacement. We encountered one case of metal shell breakage at approximately 8 years after the total hip replacement arthroplasty using a CLS expansion cup without a trauma history. Breakage of the metal shell was confirmed during revision surgery. We report this rare case with a review of the relevant literature.
치매환자에서의 양극성 인공 고관절 반치환술 후 예방적 외반 보조기의 효용성
윤의성 ( Ui Seoung Yoon ),민학진 ( Hak Jin Min ),서재성 ( Jae Sung Seo ),김윤종 ( Yoon Jong Kim ),원종화 ( Jong Hwa Won ),선승민 ( Seung Min Sun ) 대한고관절학회 2006 Hip and Pelvis Vol.18 No.4
Purpose: To evaluate the efficacy of the preventive abduction brace in dementia patients after bipolar hemiarthroplasty of the hip. Materials and Method: A review of 30 patients who had dementia prior to bipolar hemiarthroplasty of the hip. 20 females and 10 males were evaluated and their mean age was 80.4 years old (range, 68 to -92 years old). The average MMSE-K in dementia patients was 14.2 (range, 8 to 20). The reasons for the bipolar hemiarthroplasties were femoral neck fractures in all the cases. We analyzed the dislocation rates of those who had preventive abduction braces applied prospectively. Results: The average follow-up period after hemiarthroplasty was 2.2 years. All 30 patients had preventive abduction braces and no dislocations occurred after the bipolar hemiarthroplasties. Conclusion: Hip dislocations were not detected in those patients who preventive abduction braces applied. The present findings suggest that having a preventive abduction brace will definitely reduce the dislocation rate in dementia patients who have difficulties with rehabilitation after their operations.