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시간에 따라 변하는 블랙흘 자기권의 'GRAD-SHAFRANOV 방정식'
박석재,이태형,Park, Seok-Jae,Lee, Tae-Hyeong 한국천문학회 2003 天文學論叢 Vol.18 No.1
In the earlier papers we analyzed the axisymmetric, nonstationary electrodynamics of the central black hole and a surrounding thin accretion disk in an active galactic nucleus. Based on those papers we analyze the axisymmetric, nonstationary black hole magnetosphere in this paper. We concentrate on deriving the ‘Grad-Shafranov equations’; both in the force-free and non-force-free cases. In the time-independent limit our equations naturally coincide with stationary equations as they should.
박석재 ( Seok Jae Park ),신건훈 ( Gun Hoon Shin ) 한국해법학회 2002 韓國海法學會誌 Vol.24 No.2
Many models have been proposed to introduce electronic bill of lading into International commercial community, but two of them, CMI Model and BOLERO, are notable. The CMI Model has advantages over BOLERO in respect of openness, but has disadvantages in respect of security. BOLERO system represents a technical and legal infrastructure to facilitate paperless trade in goods via the internet. There are certain legal issues in relation to the operation of BOLERO System. The object of this article examines the basic legal issues in relation to the operation of BOLERO system. The main legal issues are as follows : Legal requirements for writing in relation to contracts formed through BOLERO system and the transfer of the right to goods in transit.
박석재(Seok Jae Park),신건훈(Gun Hoon Shin) 한국해법학회 2001 韓國海法學會誌 Vol.23 No.2
The development of electronic negotiable bill of lading is more difficult in principle than electronic waybills, whereas dematerialisation of transport documents which contain only information, such as non-negotiable waybills, is relatively straightforward. The bill of lading differs fundamentally from the waybill in conveying, in addition to information, proof of the right of the holder to take delivery of the goods and contractual rights and liabilities. Many models have been proposed to introduce electronic bill of lading into International commercial community, but two of them, CMI Model and BOLERO, are notable. The CMI Model has advantages over BOLERO in terms of openness, but has disadvantages in terms of security. The present state of Internet development favours BOLERO rather than CMI, but the long-term future will probably see a mixture of both systems. In this article, the general conclusion is that dematerialisation, even of documents of title, is possible and that though it would be helped by changes in the legal environment.
박석재(Park, Seok Jae),황보승(Hwangbo, Sung) 세계환단학회 2017 세계환단학회지 Vol.4 No.2
우리는 이 논문에서 『천문류초天文類抄』의 오성개합五星皆合 기록이 옛날 밤하늘에서 실제로 일어난 현상이었음을 증명한다. 오성개합은 유명한 『환단고기桓檀古記』「단군세기檀君世紀」의 오성취루五星聚婁 기록보다 736년이나 앞서 일어난 오성결집 현상으로 그 시기가 삼황오제 시대에 해당된다. 또한 BC 205년 ~ AD 1100년 사이에 일어난 오성결집 현상들을 천문 소프트웨어로 검색해 그 결과를 게재한다. 이러한 오성결집 현상들은 우리 역사 연구에 많은 단초를 제공할 수 있을 것으로 기대된다. We analyzed the concentrations of the five major planets in this paper. By using an astronomical software, we confirmed that the Oseonggaehap 五星皆合 record in the『Cheonmoonryucho 天文類抄 』 actually happened in the ancient night sky. This happened during the Samhwangoje 三皇五帝 era, which preceded the famous Oseongchuiru 五星聚婁 record in the 『Hwandangogi 桓檀古記 』 「Dangunsegi 檀君世紀 」 by 736 years. By using the same software, we also list more of the alignments that happened between BC 205 and AD 1100. The records about these alignments are expected to hold the keys to the research of Korean history.
『환단고기』 ‘두 개의 해’를 초신성으로 설명할 수 있을까?
박석재(Seok Jae Park) 세계환단학회 2022 세계환단학회지 Vol.9 No.1
『환단고기桓檀古記』 「단군세기檀君世紀」를 ‘양일병출兩日竝出’, 즉 ‘두 개의 해’ 기록을 분석하였다. 천문 소프트웨어를 이용해 초신성超新星 잔해 Puppis A가 BC 1985년 기록을 설명할 수 있다는 결론을 얻었다.