• Journal of Advanced Navigation Technology
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• v.15 no.6
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• pp.994-999
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• 2011

This paper explains how existing electrical ADU(Antenna Distribution Unit) has been improved into a mechanical ADU. Generally the mechanical ADU has stabilized Glide Path which provides a RF signal to the aircraft for safe landing and it has solved the issue of phase shift and power distribution ratio change which can be occurred during long-term use. Besides it has been certified by Flight check and operating several airports in oversea as well as in korea.

• International Commerce and Information Review
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• v.9 no.4
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• pp.177-198
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• 2007

Since 1970s, there are many tries to realize electronic bills of lading(e-B/L) in the world and great attention has been shown to the question of law, international trade customs and realizing strategy concerned that instrument. However that tries, include Bolero which is most famous company serving e-B/L, don't succeed yet. Meanwhile, Korean government amended commercial code in order to realize e-B/L on August 3, 2007. Also The Korea Paperless Trade Center set to develop the e-B/L system by spring of 2008. So far, however, no definitive answer has been given to the way of realization of e-B/L in Korea. Getting bigger the importance of analysis to the ways of realization of e-B/L in Korea, in this paper the author attempt to examine the requirements after briefly outlining and analysing the results and problems of the tries and suggest thereby policy and strategy about the realization classified three categories.