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EDCF차관(借款) 하의 개발도상국의 해외토목 설계 절차의 이해
강희철,Kang, Hee-Chul 한국기술사회 2011 技術士 Vol.44 No.2
While performing the overseas projects in developing countries under EDCF loans with Korean civil design engineers as a project manager, I often used to find out and realize that lots of Korean engineers are not fully aware of what EDCF means and how EDCF funded projects are being implemented in developing countries. This implies that in the past, they have been concentrating on domestic projects only, not to mention have the rare opportunities to work in overseas projects. For these reasons, no wonder they neither pay a careful attention to the unfamiliar terms nor intend to try to realize them, even though such terms are fundamentals and important in overseas design works. With 'something will make it do'-like-attitude in our mind on site, nothing helps us at all. To help those who would like to understand and participate in overseas civil design works in developing countries under EDCF loans either as participants or as a future project manager, I introduce what EDCF means and how the procedure under these loans is being carried out, and they are briefly described herein this paper.
비만 치료제 Phentermine Hydrochloride가 심박동 변이율(Heart Rate Variability)에 미치는 영향
강희철,Gang, Hui-Cheol 한국건강관리협회 2006 한국건강관리협회지 Vol.4 No.1
Background : Phentermine classified by "sympathomimmetic amie", is a stimulant of sympatheic tone But there has been no concrete study which presents the influence of phentermine on autonomic nervous system. Analysis of Heart rate variability is reliable, non-invasive and very useful for evaluating function of autonomic nervous system. We tried to elucidate the influence of phentermine on autonomic nervovs system by heart rate variability. MethodsAmong the 70 candidates who participated in the double-blind case control study whichwas designed in purpose of approving whether- Adipekⓓ is effective for treatment of obesity, 45persons were folled up. From April, 2005 to May 2005, HRV of the candidates who takes phentermine or placebo for 1month, was recorded using BFM-5000ⓓ(medi-core) for 5 minutes in resting state. HRV measures were assessed by time-domain and by frequency- domain analysis. Time domain parameters contain SDNN(Standard Deviation of NN intervals) and RMSSD(Root-Mean-Square of Successive Differences), etc and frequency domain Parameters contain Total Power(TP), Low frequency(LF'0.04-0.15Hz) power. High Frequency(HF:0.15-0.4Hz) power and LF/HF ratio etc. Results: Intakes of phentermine reduce HRV significant1y. SDNN & RMSSD, the main tine domain parameters of HRV, were decreased significantly(P=0.007. 0.016). PSI(Physical Stress Index of Pressure Index) was increase significantly(P=0.002)The main frequency domain parameters(TP, LF & VLF), also decreased significantly. (P=0.024,0.033, 0.015)Conclusion: The result showed that intakes of phentermine reduce heart rate variability and influence on most parameters of HRV. So phentermine not only accelerates sympathetic tone, but also inhibit the balance and function of autonomic nervous system.
양산단층지역에 분포하는 퇴적암 및 화성암류에 대한 고자기 연구
강희철,김인수,손문,정현정,Kang, Hee-Cheol,Kim, In-Soo,Son, Moon,Jung, Hyun-Jung 대한자원환경지질학회 1996 자원환경지질 Vol.29 No.6
It is a well known fact that the remanent magnetization direction of the Tertiary rocks is deflected significantly clockwise (about $50^{\circ}$) in the Tertiary basins of the southeastern part of Korean peninsula. This fact has been interpreted as an evidence of north-south spreading of the East Sea (Sea of Japan) and dextral strike-slip motion of the Yangsan fault. As deflection (rotation) of remanent magnetizations is frequently reported from various regions of the world in the vicinities of strike-slip fault, such phenomena are to be expected in the Yangsan fault region also. It was the purpose of this study to clarify whether such premise is right or not. A total of 445 independently oriented core samples were collected from Cretaceous rocks of various lithology (sedimentary rocks, andesites and I-type granites) in the Yangsan fault area. In spite of through AF and thermal demagnetization experiments, no sign of remanent magnetization deflection was found. Instead, palaeomagnetic poles calculated from formation-mean ChRM directions are very similar to those of contemporary (Barremian, and late Cretaceous-Tertiary) sedimentary and plutonic rocks in the other parts of $Ky{\check{o}}ngsang$ basin as well as those of China. Therefore, possibility of tilting of granite plutons and horizontal block rotation of study area is excluded. It is also concluded that the Yangsan fault did not take any significant role in the Cenozoic tectonic evolution of southeast Korea and the East Sea region. The boundary between rotated and unrotated region of remanent magnetization is not the Yangsan fault line, but must lie further east of it.