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한국해운기업의 경영적 특성이 재무구조에 미치는 영향에 관한 실증연구 -1997년도 외환위기 이후를 중심으로-
이광수 ( Kwang Soo Rhee ),안기명 ( Ki Myung Ahn ),신용존 ( Young John Shin ) 한국해운물류학회 2004 해운물류연구 Vol.42 No.-
The purpose of this study is to examine the factors which affect the financial structure after the exchange crisis. The period following the crisis was extraordinary in the sense that the exchange rate increased drastically. Major results of this research are as follow: There is a strong positive relationship between fixed asset and debt ratio over the period examined. And the gain and loss ratio of foreign exchange is also related over the same period. On the other hand, such variables as sales amount (which represents the size of a firm), sales change rate (which represents the business risk), interest-profit ratio (which represents the ability to pay interests), chartering income rates and cash flow turned out to have no relationship with debt ratio.
신성우 ( Shin Sung-woo ),반병열 ( Bahn Byong-youl ),이광수 ( Lee Kwang-soo ),남정희 ( Nam Jeong-hee ),이진국 ( Rhee Jin-gook ) 한국구조물진단유지관리공학회 1998 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.2 No.2
Up to date, the strengthening of steel reinforced concrete(RノC) structure is of great concern to rehabilitate the deteriorated R/C structure, and so the Carbon Fiber Sheet(CFS) has been used in the strengthening of the deteriorated structure. CFS is an excellent reinforcing material for concrete because of not only its mechanical properties but also its workabilities. This paper investigates shear strengthening effects of R/C beams according to strengthening methods. The test variables are shear reinforcement ratios(0 %, 25 %) and CFS strengthening methods(U, B, D, S, W Type). Following conclusions can be extracted. The shear capacity of R/C beams strengthened with CFS show a unremarkable increase in the different strengthening methods. The strengthening effect in both U and S types is larger than that of others. The strain distribution on CFS intersected with shear crack is similar to that in stirrup and larger strain is observed in the middle of the shear span. It is evident that reduction factor of shear strength may have to be considered for peeling and splitting of CFS.
만성경막하혈종 환자에서 혈종 및 혈장의 삼투압과 삼투압에 관여하는 인자에 대한 연구
이광수,강성돈,김태영,김종문 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.6
Fourty six patient with chronic subdural hematoma(CSDH) were managed by simple closed drainage between January 1987 and January 1990. The osmolarity and its factors of fluid from CSDH were compared to that of simultaneously drawn venous blood in patients. The results were as follows : 1) The values of K^(+) and albumin of the hematoma fluid were significantly higher than that of hematoma fluid(P<0.05). 2) Osmolarities of the hematoma fluid were higher than that of venous blood(P<0.01). 3) Osmolarity, K^(+) and albumin showed linear relationship between hematoma fluid and venous blood(P<0.01).
이광수,강성돈,김태영,김종문 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.6
Diffuse brain swelling(bilateral swelling without shift or other lesions ; DBS) after severe head injuy in children is very common event and that DBS in children is thought to be associated with a low mortality, generally compared with adult. In this study, DBS was compared in 9 children and 18 adults, selected among 222 cases of severe head injured patients admitted to the Department of Neurosurgery for 4 years from January 1986 to December 1989. The results were summarized as follows ; 1) the incidence of DBS in children(39.1%) was about 4 times as high as for adult(9.0%). 2) There was no significant difference of mortality rate in pediatric and adult group showing DBS but there was a significant low mortality rate in pediatric group without showing DBS, in contrast to other studies.