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이성준 우송대학교 부설 산업연구원 2002 산업연구 Vol.4 No.1
Since mid-1990, Malaysia is continuously pursuing a policy of becoming one of the world economic superpowers by year 2020 under the strong leadership of the prime minister Mahatir. The top priority of Malaysia economic policy is put on the area of information technology(IT) with a variety of benefits and concessionary measures for foreign direct investments to Malaysia, which makes Malaysia one of the most attractive country for the Korean IT-related firms' foreign direct investment and/or mutual cooperation. In this paper, it has been tried to scrutinize the Korean IT-related firms' most suitable way of penetrating the Malaysia IT market including direct investments. The findings are as follows. Firstly, Malaysia can be developed as the strategic foothold for the whole southeast Asian market including China. Secondly, Malaysia IT market is attractive for the Korean firms' export of internet contents and educational softwares as subcontractors of two country's governments. Thirdly, a joint venture(JV) strategy between the Korean firms in the fields of business-to-business(b-to-b) or business-to-company(b-to-c) is highly recommendable. Fourth, a long-term planning seems to be essential in penetrating the immature market like that of Malaysia IT market. Finally, a penetration strategy in collaboration with government and the world-wide chinese society also seems to be recommendable.
정합조건을 만족하는 불확실성에 대한 비선형 시스템의 강인제어
이성준 한국기술교육대학교 1998 論文集 Vol.5 No.1
A nonlinear feedback multivariable controller is used to stabilize a class of nonlinear systems. The controller is robust in the sense that the both output and internal state of the feedback system are ultimately bounded in the presence of matched uncertainties. The controller consists of decoupling control law, which linearizes the input-output behavior of the system, and vector saturating function for robustness correction. Restrictive assumptions on the structure of the system are required but they eliminate the ambiguities of the internal stability conditions which appear in the prior literature.
過 �슘血症에 있어서 atropine이 心肺動態에 미치는 影響
李聖俊 慶北大學校 醫科大學 1974 慶北醫大誌 Vol.15 No.1
Cardiopulmonary effects of the vagal blocking with atropine in the hypercalcemic dogs were studied. The purpose of this study is to observe the vagal influence in the production of functional alterations of circulation and respiration by hypercalcemia. In this experiment, dogs were given atropine sulfate (0.032mg/kg.) intravenously immediately followed by intravenous infusion of 10% calcium gluconate. Pertinent data in these dogs were transient elevations of femoral artery mean pressure and right ventricular systolic pressure, and significant decreases in femoral venous pressure, pulmonary artery mean pressure and total pulmonary resistance. Also noted were significant increases in respiratory rate, minute ventilation, oxygen consumption, carbon dioxide elimination and arterial oxygen saturation. In comparison of these results to those in dogs in which calcium alone was given, decreases in femoral venous pressure, pulmonary artery mean pressure and total pulmonary resistance in the former were less marked than in the latter, whereas increases in respiratory rate, minute ventilation and carbon dioxide elimination were less pronounced. These results suggest that among various cardiopulmonary effects of hypercalcemia those on systemic hemodynamic are not significantly affected by the vagus but the increase in ventilation induced by hypercalcemia is closely related to the vagal tone.
온라인 리뷰 분석 기반 중고거래 플랫폼 서비스 만족 및 불만족 요인 고찰
이성준 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.10
디지털 전환이 가속화되면서 새로운 유형의 상거래 방식으로 C2C 기반 중고 거래 플랫폼 서비스가 빠르게 발전하고 그 영향력이 증대되고 있으며, 이들 서비스에 대한 학술적인 차원의 관심도 점차 높아지고 있다. 이러한 상황 속에서 본 연구는 대표적인 C2C 중고거래 플랫폼 서비스인 ‘당근(舊 당근마켓)’을 중심으로 서비스 이용자 관점에서 서비스 만족 요인들과 불만족 요인들이 무엇인지를 실증적으로 살펴보고자 하였다. 이를 위하여 본 연구는 Python과 Textom을 기반으로 구글 플레이 스토어(Google Play Store)상에 남겨진 ‘당근’ 관련 이용자들의 모든 온라인 리뷰들을 수집하였고 이를 긍정과 부정 관련 리뷰들로 분리한후 텍스트 마이닝과 LDA 토픽 모델링을 활용하여 분석하였다. 이러한 분석결과, C2C 중고거래 플랫폼 서비스 관련 5개의 만족 유발 요인들과 3개의 불만족 요인들이 도출되었다. 연구의 마지막 부분에는 이들 결과들이 관련 기업 부서들과 정부 정책 당국자들에게 지니는 다양한 함의들도 토의해본다.