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A Full-Body Relative Orbital Motion of Spacecraft Using Dual Tensor Algebra and Dual Quaternions [PDF]

open access: goldMathematics, 2023
This paper proposes a new non-linear differential equation for the six degrees of freedom (6-DOF) relative rigid bodies motion. A representation theorem is provided for the 6-DOF differential equation of motion in the arbitrary non-inertial reference ...
Daniel Condurache
doaj   +2 more sources

Does the symmetry of absolute permeability influence relative permeability tensors in naturally fractured rocks? [PDF]

open access: goldJournal of Petroleum Exploration and Production Technology, 2019
Relative permeability is a tensorial property directly dependent on absolute permeability tensor which has been taking both symmetric and non-symmetric (full tensor) forms in the literature.
Mohammad Sedaghat   +2 more
doaj   +2 more sources

Relative Moment Tensor Inversion for Microseismicity: Application to Clustered Earthquakes in the Cascadia Forearc

open access: diamondSeismica
The relative abundance of small earthquakes affords significant opportunities for improved understanding of regional seismotectonics; however, determining moment tensors for such events recorded on regional networks is complicated by low signal-to-noise
Doriane Drolet   +2 more
doaj   +2 more sources

On the constitutive pseudoscalars of hemitropic micropolar media in inverse coordinate frames [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
The paper is devoted to the constitutive pseudoscalars associated with the theory of hemitropic micropolar continuum. The basic concepts of pseudotensor algebra are presented. The pseudotensor form of the hemitropic micropolar elastic potential is given,
Eugenii V. Murashkin, Yuri N. Radayev
doaj   +1 more source

Flow Classification and Its Application to Fluid Processing [PDF]

open access: yesMATEC Web of Conferences, 2021
Mathematically, the problem of flow field classification can be analyzed by the eigenanalysis of the deformation-rate tensor; however, such analysis technique have not been commonly applied in fluid processing.
Nakayama Yasuya, Kajiwara Toshihisa
doaj   +1 more source

Evaluation of the Role of Diffusion Tensor Imaging in Grading of Glial Tumors based on Relative Anisotropy

open access: greenمجله دانشکده پزشکی اصفهان, 2016
Background: The most common primary tumors of the brain are gliomas. Despite improvements in treatment strategy, the prognosis for patients with high-grade gliomas has stayed poor, while it is relatively good for low-grade gliomas.
Fariba Davnian   +3 more
doaj   +1 more source

Nonconvex Tensor Relative Total Variation for Image Completion

open access: yesMathematics, 2023
Image completion, which falls to a special type of inverse problems, is an important but challenging task. The difficulties lie in that (i) the datasets usually appear to be multi-dimensional; (ii) the unavailable or corrupted data entries are randomly ...
Yunqing Bai, Jihong Pei, Min Li
doaj   +1 more source

On the use of residual dipolar couplings in multi-state structure calculation of two-domain proteins

open access: yesMagnetic Resonance Letters, 2022
Residual dipolar couplings (RDCs) are powerful nuclear magnetic resonance (NMR) probes for the structure calculation of biomacromolecules. Typically, an alignment tensor that defines the orientation of the entire molecule relative to the magnetic field ...
Alexandra Born   +3 more
doaj   +1 more source

On the Neuber theory of micropolar elasticity. A pseudotensor formulation

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
The present paper deals with a pseudotensor formulation of the Neuber theory of micropolar elasticity. The dynamic equations of the micropolar continuum in terms of relative tensors (pseudotensors) are presented and discussed.
Vladimir Aleksandrovich Kovalev   +2 more
doaj   +1 more source

On a micropolar theory of growing solids

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
The present paper is devoted to the problem of boundary conditions formulation in the growing micropolar solid mechanics. The static equations of the micropolar continuum in terms of relative tensors (pseudotensors) are derived due to virtual work ...
Eugenii Valeryevich Murashkin   +1 more
doaj   +1 more source

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