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세계금융위기와 우리나라 항만교역량 변동성 간 관계 분석
우영진(Young-Jin Woo),김의준(Eui-June Kim) 한국무역연구원 2020 무역연구 Vol.16 No.2
Purpose–This paper aims to investigate the contagion effects for four main container ports that are faced with competitive relations with one another with respect to the US market in the context of the financial crisis. Design/methodology/approach–In order to capture further time-variation in contagion effects and dynamic linkages between container ports, our paper makes use of an MGARCH model. Findings–As a result of the empirical analysis, the shock resulted from the 2008 financial crisis increased the volatility of the trade volume of Busan Port and Gwangyang Port, but did not affect Incheon Port and Pyeongtaek Port. Second, when the trade volume volatility of Incheon Port increased, the trade volume volatility of Busan Port and Gwangyang Port also increased, but Pyeongtaek Port had the opposite effect. Finally, Pyeongtaek Port was not disturbed by the crisis, but affecting the volatility of the other three major ports. Research implications or Originality–As Busan Port and Gwangyang Port have handled most of the port volumes in Korea, it is bound to absorb most of the impacts caused by changes in the external economy. This result suggests that resources for the crisis management capability against external shocks that would be allocated to Busan and Incheon ports first.
항만에서의 위험·유해물질(HNS) 누출사고 대응에 관한 연구
우영진 ( Young Jin Woo ),이창준 ( Chang Jun Lee ) 한국안전학회(구 한국산업안전학회) 2016 한국안전학회지 Vol.31 No.6
In general, lots of containers including various dangerous materials are transported to the port located in big cities such as Busan where massive residents live. Thus, it`s really important how to make the emergency response for the leak accidents of dangerous materials and evaluate the direct or indirect damages to adjacent areas. In this study, in order to make reasonable emergency plans, CA (Consequence Analysis) is employed after selecting a key hazardous and noxious material, hydrogen fluroide. This material accounts for the third largest portion of cargo volume among all dangerous materials and can cause a huge damage in case of leakages. As a case study, Busan North port is selected as a test port since the portion of dangerous materials is higher than that of other ports in Busan. It is assumed that 1 ton of hydrogen fluoride is spilled at Busan North port. CA is performed to assess the impact of this accident. Throughout CA, the ERPG-2 range of a leak accident can be evaluated and this result can be used for decision making tools for mitigating the impact of a leak accident. To mitigate the damage of this accident, suitable a protective equipment and resident evacuation procedures should be prepared. Finally, this study can provide a systematic approach to make the emergency plan for reducing economical and personal losses.
센서 융합형 지능형 부품 제조를 위한 적층 제조 기술 연구
정임두,이민식,우영진,김경태,유지훈,Jung, Im Doo,Lee, Min Sik,Woo, Young Jin,Kim, Kyung Tae,Yu, Ji-Hun 한국분말야금학회 2020 한국분말재료학회지 (KPMI) Vol.27 No.2
The convergence of artificial intelligence with smart factories or smart mechanical systems has been actively studied to maximize the efficiency and safety. Despite the high improvement of artificial neural networks, their application in the manufacturing industry has been difficult due to limitations in obtaining meaningful data from factories or mechanical systems. Accordingly, there have been active studies on manufacturing components with sensor integration allowing them to generate important data from themselves. Additive manufacturing enables the fabrication of a net shaped product with various materials including plastic, metal, or ceramic parts. With the principle of layer-by-layer adhesion of material, there has been active research to utilize this multi-step manufacturing process, such as changing the material at a certain step of adhesion or adding sensor components in the middle of the additive manufacturing process. Particularly for smart parts manufacturing, researchers have attempted to embed sensors or integrated circuit boards within a three-dimensional component during the additive manufacturing process. While most of the sensor embedding additive manufacturing was based on polymer material, there have also been studies on sensor integration within metal or ceramic materials. This study reviews the additive manufacturing technology for sensor integration into plastic, ceramic, and metal materials.