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서준석,김희진,유회수,Seo Jun Seok,Kim Hee Jin,Ryoo Hoi-Soo 대한용접접합학회 2005 대한용접·접합학회지 Vol.23 No.3
It is required for the steel materials used in the sour environment to have sufficient resistance to hydrogen induced cracking(HIC). For line pipe steels, HIC resistance could be varied during pipe making process due to the large plastic deformation applied in the thick-wall pipe. In order to figure out such effect, HIC tests were performed not only in the plate condition but in the pipe condition and their results were compared in terms of cracking ratio. Test results demonstrated a detrimental effect of plastic deformation to HIC resulting in a substantial increase in the cracking ratio after pipe forming process. All of the cracks found in the pipe material were located in the outer layer of pipe where the tensile strain was resulted during pipe forming stage. In order to understand the HIC resistance of the pipe but in the plate condition, it was suggested to pre-strain the plate to some extent before the HIC test.
서준석,정제명,이정호,박신율,류현욱,이경우,김윤정,박노한,이정식,서강석,박정배,이희중 대한응급의학회 2004 대한응급의학회지 Vol.15 No.6
P u r p o s e: Rapid ascent from low to high altitude (above 2500 m) often causes acute mountain sickness (AMS), a symptom-complex characterized by headache and other systemic symptoms (gastrointestinal upset, weakness, dizziness, and difficulty sleeping). In this study, we observed the vital signs and AMS symptoms. 13 participants in a mountain climb in order to determine correlation between AMS and risk factors such as obesity, smoking, and a previous history of AMS. M e t h o d s: We studied 13 participants who climbed Mt. Cholatse (6440 m), and measured their vital signs and symptoms during the trekking. Standard Lake Louise questionnaires were filled out at five times during the trek: at the sea level, 2700 m, 3440 m, 4040 m, and 4700 m. With AMS scores and severity grades, we evaluate the severity of symptoms and the physical status. R e s u l t s: The overall AMS score was 3.7 ±0.5, and headache was the most frequent symptom. As the altitude increased, oxygen saturation decreased whereas other vital signs (blood pressure, respiratory rate, and pulse rate) increased. The average AMS scores and severity grades increased more rapidly for obese men than for non-obese men (p<0.001). Smoking and previous history of AMS were also associated with the development of AMS (p< 0 . 0 0 1 ) . C o n c l u s i o n: Persons who are obese or have a history of a smoking or AMS, are more likely to develop AMS symptoms. Further understanding of the natural and evolution of AMS and of the risk factors associated with AMS will educate the general population and physicians and help in its prevention and treatment.
徐俊奭 慶一大學校 1997 論文集 Vol.14 No.1
recently, there has been rapid increased in Taegu firm's foreign direct Investment, reflecting the change of world and domestic economic cnvironment. The purpose of this study are 1) to find out FDI pattern of local production subsidiaries of Taegu's two small-medium firms located in Republic of china and Indonesia 2) to evaluate possible implications for Taegu regional firm's foreign direct investment and consider the efficient countermeasure of Taegu regional firms.
해외 비제조업체 인수 의사결정과정에 관한 연구: 대한항공사의 LA 힐튼호텔 및 오피스센터 인수 사례
서준석 한국국제경영관리학회 2007 국제경영리뷰 Vol.11 No.3
해외기업인수 전략 선택 결정요인을 분석한 기존연구들의 문제점은 정태적 결정요인 분석으로, 해외기업을 인수하려는 기업이 어떤 의사결정과정을 거쳐 인수전략을 선택하는지에 대해 거의 설명을 해주지 못한다는 점이다. 이와 같은 상황하에서 국내기업의 해외기업인수 의사결정과정을 분석한 구체적 사례연구는 거의 없는 실정이며, 특히 여러 업종에 걸쳐 연구된 해외직접투자 신설전략선택 연구와는 달리 현지기업인수에 관한 연구는 주로 제조업체 인수에 집중되어 있으며, 서비스업종에 대한 해외기업인수 연구는 전무한 실정이다. 본 연구에서 분석할 사례는 대한항공이 미국 LA소재 힐튼호텔 및 오피스센터를 인수한 사례이다. 국내기업의 해외 제조업체 인수사례가 아닌, 현지호텔업체 인수사례를 처음으로 심층적으로 조사 분석하고자 한다. 이에 따라 본 연구에서는 사례기업의 투자의 필요성, 해외투자내용, LA 힐튼호텔 및 오피스센터 개요 및 현황분석, 피인수기업 가격산정, 인수소요자금 및 조달계획, 호텔운영계획, 추정손익계산서 등을 살펴보고자 한다. 연구목적을 살펴보면 첫째, 비제조업 해외기업을 인수한 기업이 어떤 의사결정과정을 거쳐 인수전략을 선택했는지 둘째, 국내기업의 해외 비제조업체 인수전략과 해외 제조업체 인수전략 선택 행태에 차이가 있는지 셋째, 해외사업을 담당하고 있는 실무자들이 참조할 수 있는 제반 시사점들에 대해 알아보고자 한다. 이를 위해 연구대상사례기업의 해당투자 실무자와의 수차례의 면담을 통해 전반적인 사항을 파악한 후에, 추가적으로 사내자료를 체계적으로 분석하였다. The purpose of this case study is to examine the process of decision making of Korean Airlines co.' acquisition of Hilton Hotel & Office center in LA. This case study is to examine items which are ① necessity of investment ② contents of foreign direct investment ③ analysis of the present state & outline of Hilton hotel & Office center in LA ④ valuation of target firm ⑤ acquisition fund & financing plan ⑥ operation plan of hotel ⑦ assumed income statement to know process of decision making how Korean Airlines co.' acquires Hilton Hotel & Office center in LA. The important items affect process of decision making of acquisition of Korean Airlines co.' acquisition of Hilton Hotel & Office Center in LA ,which are ① connection with existing business ② selection of target firm ③ capacity of valuation and acquisition financing. The implication of this case study is that we have to consider connection of items in process of decision making to know how a firm acquires foreign firm.