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이동국,이상도,유영수,박영춘,임정근,이 형 啓明大學校 醫科大學 1993 계명의대학술지 Vol.12 No.2
This study was undertaken to evaluate the correlation between urodynamic findings and localization of CNS lesions in patient with voiding disturbance. The patient group consisted of 48 patients (35 male and 13 female) with various localization of CNS lesions confirmed by CT or MRI among which were 9 cerebral cortex, 8 putamen and internal capsule, 6 thalamus and internal capsule, 7 brain stem and 18 spinal core. m and 18 spinal core. Nineteen of the 42 patients with various CNS lesions above sacral crod showed detrusor hyperreflexia. Six of the 7 patients who had suprasacral cord lesion and detrusor hyperreflexia showed detrusor sphincter dyssynergia. In 6 patients with sacral cord lesions, 5 patients showed detrusor areflexa. In summary, detrusor sphincter dyssynergia with detrusor hyperreflexia and detrusor areflexia seemed to be specific urodynamcic pattern of suprasacral spinal cord and sacral cord lesion, respectively. But other CNS lesion showed no consistent specific urodynamic pattern.
Yoo, Dong-Geun,Kim, Kyoung-Jin,Lee, Gwang-Soo,Kang, Nyeon-Keon,Yi, Bo-Yeon,Kim, Gil-Young,Chang, Se-Won,Kim, Han-Joon Elsevier 2017 Quaternary international Vol.459 No.-
<P><B>Abstract</B></P> <P>The Korea Strait is a seaway connecting the East Sea with the East China Sea. The Plio-Quaternary stratigraphy and sedimentation on the Korea Strait shelf was studied using a dense network of high-resolution, single-channel seismic reflection profiles. The shelf sequences above the acoustic basement consist of seven depositional sequences separated by erosional unconformities corresponding to falls in sea level. Individual sequences are characterized by well-stratified and complex sigmoid-oblique prograding reflection configurations, reflecting a history of upbuilding and outbuilding in response to repetitive transgressive and regressive events driven by sea level changes. During the regression to lowstand of sea level, lowstand prograding wedges were formed seaward along the present shelf margin, whereas during the highstand of sea level, as in the present condition, highstand deposits were deposited in the inner shelf along the coast. However, as the subsequent regression began, the inner-shelf highstand deposits were severely eroded out and/or formed a condensed section. Volumetrically, the forced regressive and lowstand systems tracts are the most important components of the Korea Strait. Consequently, the Plio-Quaternary sequence in this area consists of a succession of stacked progradational lowstand wedges, mainly formed during the regression and lowstand of sea level.</P>
Dong-Geun Yoo,Kyoung-Jin Kim,Gwang-Soo Lee,Gil-Young Kim,Sung-Ho Bae 한국지질과학협의회 2017 Geosciences Journal Vol.21 No.6
This paper is a review of stratigraphic architectures and evolution history of late Pleistocene lowstand deposits on the outer shelf of Korea Strait. Located between the southeastern tip of the Korean Peninsula and the Tsushima Island, the Korea Strait is a seaway connecting the East Sea with the East China Sea. Detailed analysis of high-resolution seismic profiles and sediment data give a good evidence for the existence of three superimposed wedge-shaped sedimentary units that thicken seaward. The individual sedimentary wedges are characterized by seaward dipping and complex sigmoid-oblique prograding reflection configurations with some chaotic or hummocky reflectors. On the basis of distribution and external geometry, these sedimentary wedges are interpreted as a “shelf-margin or shelf-edge delta”, mainly related to falling and lowstand sea level. Occurrence of this delta type is a common constitute of the Quaternary shelf in the Korea Strait. Although the entire units have not been fully dated, it is believed that these wedges were deposited during late Pleistocene sea-level lowstands. Repeated falls and lowstands of sea level (isotopic stages 8, 6 and 2/4) resulted in the formation of lowstand prograding wedges along the present shelf margin and trough region, having been separated from the inner shelf deposits. During subsequent episodes of sea-level rise (isotopic stages 8/7, 6/ 5, and 2/1), the upper part of sedimentary wedges was eroded, and thin covered by thin transgressive sands. Consequently, the late Pleistocene sequences on the shelf margin and trough region in this area mainly consist of a succession of stacked lowstand prograding wedges formed during the regression and lowstand of sea level.
On the Impacts of Regional Trading Arrangements on FDI
Dong-Geun Han(한동근),Taek-Dong Yeo(여택동),Young-Man Yoon(윤영만),Shiyong Yoo(유시영) 한국무역학회 2004 한국무역학회 세미나 및 토론회 Vol.2004 No.8
The paper examines the impacts of the Northeast Regional Trading Arrangements (RTAs) on inward FDI to Korea. We first study the theoretical background of the relations between RTAs and FDI. Secondly, we analyze the major determinants of the inward FDI to Korea. Finally, a prediction about how the China-Japan-Korea FTA (hereinafter (CJK FTA) will affect the inward FDI to Korea is provided. Prior literature shows that there are three motives for FDI; horizontal integration, vertical integration, and advantage for product varieties. Depending upon which characterthe inward FDI to Korea has, the impact of the China-Japan-Korea FTA on the inward FDI will differ. With the theoretical background, we implemented an empirical study. To characterize the inward FDI to Korea, we constructed a fixed effect regression model where inward FDI was regressed on wage and interest differentials between home and source countries, exchange rates, GDP, trade volume, and the number of labor dispute. Two data sets were used: one consisting of the inward FDI by source country (1980-2003), and the other consisting of the inward FDI by sector and source country (1998-2003). Our empirical results show that the inward FDI to Korea is of both horizontal and vertical character. We argue that the China-Japan-Korea FTA is very likely to encourage FDI inflows to Korea. It is empirically found that the trade volume variable has a positive impact on the inward FDI in all industries, implying that trade and FDI are complements in the Korean industries. Empirical results also show consistent negative signs on real wage differential variable across industries. It is expected that the elasticity of the inward FDI with respect to the real wage differential is going to be much higher once the CJK FTA is formed. It is also expected that the negative effect of labor dispute on the inward FDI will aggravate when the FTA is created. A channel through which FTA may promote the FDI to Korea is growing domestic market size. FTA in general prompts economic growth through enlarged international trade. Therefore, growing consumers' purchasing power under the FTA could attract more FDI into Korea. Whether FTA will discourage or encourage the inward FDI depends on the relative magnitude of positive and negative impacts the FTA will bring. But our temporary verdict is that the CJK FTA is more likely to encourage the inward FDI in general as the Korean labor market is becoming more flexible.
Yoo, Dong-Geun,Koo, Nam-Hyung,Lee, Ho-Young,Kim, Byoung-Yeop,Kim, Young-Jun,Cheong, Snons Informa UK (TaylorFrancis) 2016 EXPLORATION GEOPHYSICS -AUSTRALIA- Vol.47 No.4
<P>A high-resolution seismic survey was designed to improve the quality of seismic data and study the evolution of inner shelf deposits off the southern coast of Korea. A 0.5 L air gun and 6- or 8-channel streamer cable with a 5 m group interval were used as a seismic source and receiver system, respectively. Data recording was digitally performed at a shot interval of 2 s and a sample interval of 0.1 ms using a personal computer (PC)-based recording system with an analogue to digital (A/D) converter. In the data processing, deconvolution and static corrections were very effective for improving the data resolution. The data resolution and signal-to-noise (S/N) ratio were improved by using multi-channel digital seismic systems as opposed to a single-channel analogue streamer. The results show that a small-scale multi-channel seismic system is an effective way to investigate late Quaternary deposits. Seismic stratigraphic analysis of the high-resolution seismic profiles revealed that inner shelf deposits, up to 30m thick, consist of three sedimentary units, which comprise transgressive and highstand systems tracts deposited after the last glacial period. The transgressive systems tract includes two units (I and II) separated by a ravinement surface (RS). The lower Unit I, lying below the RS, consists of estuarine sediments left behind by shoreface erosion during transgression, and represents a paralic component. The upper Unit II, including two sub-units (IIa and IIb), lies above the RS and consists of sand produced by shoreface erosion during landward transgression, which corresponds to a marine component. The uppermost Unit III lies above the maximum flooding surface and consists of thick mud clinoforms of the modern Nakdong and Seomjin subaqueous deltas. This unit likely formed during the recent sea level highstand and represents the highstand systems tract.</P>