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홍성수,이충추,Hong, Seong-Su,Horai, Satoshi,Lee, Chung-Choo The Korean Society for Integrative Biology 1998 Korean journal of biological sciences Vol.2 No.2
A deletion of one out of the two copies of 9-bp repeat sequence (CCCCCTCTA), between the cytochrome oxidase II and Iysine tranfer RNA (COII/$tRNA^{Lys}$) genes in human mitochondrial DNA (mtDNA) has been used as a polymorphic anthropological marker for people of east Asian origin, and to lesser extent, Pacific and African populations. We searched for the 9-bp deletion of the intergenic COII/$tRNA^{Lys}$ Lys region in two Korean populations (175 from Seoul and 38 from Cheju) and examine the distibution of this deletion in world populations. The 9-bp deletion was detected directly by electrophoresis of the polymerase chain reaction (PCR)-amplified nucleotide(nt) 8211-8310 mtDNA fragment. The frequencies of the 9-bp deletion were significantly different between the Seoul (16%) and Cheju (8%) populations. Examination of data from the world populations suggests a geographic gradient. The frequency reaches its highest values in some Pacific island populations and decreases along the southeast Asia-Siberia transect. In spite of this geographic gradient, Mongoloid populations including Korean, Chinese, Japanese, and Mongolian populations were relatively homo-geneous with regard to the 9-bp deletion type of the intergenic COII/$tRNA^{Lys}$ region. These results indicate Koreans are genetically related to northeast Asian populations, and have a maternal mongoloid ancestry. Therefore, the 9-bp deletion of the intergenic COII/$tRNA^{Lys}$ region will provide significant information to elucidate the historical patterns of migration of the Mongoloids.
환발해권의 물류수급불균형과 한국제조업체의 대응과제 - GSCM 허브구축을 위한 물류의 거버넌스를 중심으로 : 환발해권의 물류수급불균형과 한국제조업체의 대응과제
최용록(Yong-Rok Choi),이충추(Zhongqiu Li) 인하대학교 산업경제연구소 2006 경상논집 Vol.20 No.1
This paper investigates the logistics bottlenecks of the North-east China, where most of Korean manufacturing firms invested in. With the background of rapidly growing economies, the regional economy as well as the logistics network in the region has been highly developed. But due to the imbalance of logistics demand and supply in the Bohai round-sea area, many Korean firms have faced the severe bottleneck in the international logistics. The paper analyzes the reason for this imbalance of logistics in terms of three factors such as governance, localization by strategic alliance, and governmental collaboration. Based on the factors, the paper suggests three solutions with firm-level governance, industry-level 4PL strategies, and government-level policies.