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太阳系界面动态磁场问题的H(curl,Ω)有限元最优误差估计
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作者 姚昌辉 申俊文 赵艳敏 《应用数学》 CSCD 北大核心 2022年第1期200-207,共8页
本文利用具有最优插值逼近的界面棱边元来逼近太阳系界面动态磁场问题,采用界面对齐的三角剖分对区域进行划分且跳转接口被δ-带包围.利用界面棱边元的性质,得到了关于动态磁场的最优误差估计,收敛结果为O(τ+h),其中τ和h分别是时间和... 本文利用具有最优插值逼近的界面棱边元来逼近太阳系界面动态磁场问题,采用界面对齐的三角剖分对区域进行划分且跳转接口被δ-带包围.利用界面棱边元的性质,得到了关于动态磁场的最优误差估计,收敛结果为O(τ+h),其中τ和h分别是时间和空间方向的剖分步长.最后,对太阳系界面模型的动态磁场进行了数值模拟. 展开更多
关键词 界面棱边元 太阳系界面 最优误差估计 动态磁场问题
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Correlations between Human Adaptation, the Earth-Cosmos Context and Aristotle's Four Causalities
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作者 Cornelia Guja 《Journal of Philosophy Study》 2013年第10期914-928,共15页
The Earth, which is a planet connection with the evolution of the Solar system, was formed and evolved as part of the WHOLE, in close of the Universe. The awareness, knowledge, and understanding of our coexistence wit... The Earth, which is a planet connection with the evolution of the Solar system, was formed and evolved as part of the WHOLE, in close of the Universe. The awareness, knowledge, and understanding of our coexistence with the Universe may clarify a series of obscure problems of our existence, and, at the same time, may bring solutions for other acute problems which our modem society has to face, such as energy, nature preservation, the origin, evolution and adaptation of the living and especially of man to the environment, etc.. This paper is trying to theoretically break up the concept of environmenf' into four fundamental contexts: terrestrial, lunar, solar-planetary, and cosmic context. We intend to approach the four contexts that distinctly and simultaneously influence life on the Earth using the interface theory which we developed in Informational Anthropology, Integronics and Biocosmological Anthropology. We consider that the living adapted and developed in a differentiated way according to the impact of these contexts. They may be the source for the four causalities Aristotle intuited, as well as the cause of many still unknown phenomena that diversified man's evolution and variability (Ackrill 1997; Falcon 2008). 展开更多
关键词 system/interface CONTEXT COEXISTENCE differentiated adaptation to fundamental contexts
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