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José Antonio López Ortí, Francisco José Marco Castillo and María José Martínez Usó
In the present paper, we efficiently solve the two-body problem for extreme cases such as those with high eccentricities. The use of numerical methods, with the usual variables, cannot maintain the perihelion passage accurately. In previous articles, we ...
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Jean-Louis Le Mouël, Fernando Lopes, Vincent Courtillot, Dominique Gibert and Jean-Baptiste Boulé
In the report he submitted to the Académie des Sciences, Poisson imagined a set of concentric spheres at the origin of Earth?s magnetic field. It may come as a surprise to many that Poisson as well as Gauss both considered the magnetic field to be consta...
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Vladimir S. Aslanov and Daria V. Neryadovskaya
This paper is dedicated to identifying stable equilibrium positions of the tether systems attached to the L1 or L2 libration points of the Mars?Phobos system. The orbiting spacecraft deploying the tether is at the L1 or L2 libration point and is held at ...
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Songtao Zhang, Peng Zhao, Manhai Gui and Lihua Liang
Among the commonly used ship-stabilizing devices, the fin stabilizer is the most effective. Since the lift force of the conventional fin stabilizer is proportional to the square of the incoming flow velocity, it has a better anti-rolling effect at higher...
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Fernando Lopes, Vincent Courtillot, Dominique Gibert and Jean-Louis Le Mouël
In this paper, the 1978?2022 series of northern (NHSI) and southern (SHSI) hemisphere sea ice extent are submitted to singular spectral analysis (SSA). The trends are quasi-linear, decreasing for NHSI (by 58,300 km2
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Ivan Chavdarov and Bozhidar Naydenov
The work defines in a new way the different types of solutions of the inverse kinematics (IK) problem for planar robots with a serial topology and presents an algorithm for solving it. The developed algorithm allows the finding of solutions for a wide ra...
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Hsien-Wang Ou
This paper considers the general ocean circulation (GOC) within the thermodynamical closure of our climate theory, which aims to deduce the generic climate state from first principles. The preceding papers of this theory have reduced planetary fluids to ...
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Li Zhou, Feng Diao, Ming Song, Yue Han and Shifeng Ding
As a key parameter, icebreaking capability is often used to judge whether a polar ship could navigate in level ice at a certain speed. This paper presents two methods to calculate icebreaking capability. The first one is a static method based on the esti...
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Yu-Hsien Lin and Chia-Wei Lin
This study established a seakeeping program to evaluate the motion responses of a high speed semi-planing craft and to develop a database for future route planning. A series 62 mono-hull was chosen for the test cases, comparing seakeeping performances wi...
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Responsive architecture comprises the creation of buildings or structural elements of buildings that adapt in response to external stimuli or internal conditions. The responsiveness of such structures rests on addressing constraints from multiple domains...
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