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尹大遠,朴鍾演,張牧淳,朴贊元 江原大學校 産業技術硏究所 1993 産業技術硏究 Vol.13 No.-
To analyze dynamic characterics for a motorcar, the creating and the hammering test methods are introduced. This paper has studied the method of computing the natural frequency of the impulse wave on a tire, the decay constant which determines the absorption capability for the impulsive force. Moreover we have examined the reliability for the decay constant calculated, in this paper theoritical results are agreed with the simulated ones.
DC-BUS 기반 마이크로그리드의 동특성 해석을 위한 EMTP 모델 개발
이목형(Mog-Hyung Lee),백영식(Young-Sik Baek),정태영(Tae-Young Jyung),권경하(Kyung-Ha Kwon),박지호(Ji-Ho Park) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
본 논문에서는 여러 가지 과도현상 해석 프로그램 중 하나인 EMTP-RV시뮬레이터를 이용하여 태양전지와 연료전지에 의해 각각 발생되어진 에너지원을 공통의 DC-BUS에 연계하여 운전하는 마이크로소스와 마이크로그리드를 모델링하였다. 또한 사례 연구를 통해 마이크로그리드의 운전형태와 부하변동에 따른 마이크로소스의 동특성을 분석 하였다.
Won-Mog Choi 인하대학교 정석물류통상연구원 2010 JOURNAL OF INTERNATIONAL LOGISTICS AND TRADE Vol.8 No.1
Radio frequency identification(RFID) provides a useful tool for prescreening or detection of goods and containers moving across the border and for controlling the trade of illicit materials and preventing or mitigating the effects of terrorism. Although anti terrorism measures are important in today’s dangerous world, RFID tools, if misused, may violate the WTO trade rules. Whenever goods or container control measures using RFID are proposed, their contents, objectives, and rationale must be published, and WTO members must be notified through the WTO Secretariat and allowed to make comments. WTO members should not take such measures that are designed or applied in a discriminatory manner and those measures must be adopted only under necessary situations and to the extent necessary. These measures must reduce the incidence and complexity of import and export formalities, and there should not be substantial penalties for minor breaches of the requirements under the measures. If the measures require country-of-orgin information in RFID tags. they must apply in the same way to like products, and they must not cause unnecessary inconveniences or unreasonable cost. If the measures deal with containers in international transit, they must be reasonable, consider the conditions of the traffic, and guarantee transit through the most convenient routes for international transit. A container control measure designed to restrict the flow of fissionable materials or their derivative materials, traffic in arms, ammunition, and implements of war, or traffic in military supply goods and materials may be justified, even if it violates some of the GATT rules. In addition, a measure established in time of war or other emergency in international relations or based on the United Nations Charter and designed to maintain international peace and security can also be justified. As a last resort, WTO members may request a waiver from GATTandTBT Agreement obligations for container control measures that include RFID. Superpowers must be careful not to use RFID to practice power politics and create regulations to deal with national security and anti-terrorism issues that do not conform to international law. The key question is how to maintain a balance between the two inalienable values of free trade and national security in this era of globalization, harmonization and terrorism.