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EXTENDED ABSOLUTE PARALLELISM GEOMETRY [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2008
In this paper, we study Absolute Parallelism (AP-) geometry on the tangent bundle TM of a manifold M. Accordingly, all geometric objects defined in this geometry are not only functions of the positional argument x, but also depend on the directional argument y.
Youssef, Nabil L., Sid-Ahmed, A. M.
openaire   +2 more sources

Analysis of the role of spiritual and corporeal geometry in the architecture of Soltaniyeh dome [PDF]

open access: yesهنر اسلامی, 2022
Geometry has a special place in Iranian architecture (both pre-Islamic and post-Islamic). Basically, the purpose of using geometry in architecture was to develop and expand the forms and manifestations derived from nature to promote matter and express ...
Sware Amirashayeri   +3 more
doaj   +1 more source

Reflectometers for Absolute and Relative Reflectance Measurements in the Mid-IR Region at Vacuum

open access: yesSensors, 2021
We demonstrated spectral reflectometers for two types of reflectances, absolute and relative, of diffusely reflecting surfaces in directional-hemispherical geometry.
Jinhwa Gene, Min Yong Jeon, Sun Do Lim
doaj   +1 more source

Cooperative Swarm Geometry Optimization for Assured Navigation with Range Radios in GNSS-Denied Environments

open access: yesEngineering Proceedings, 2023
This paper addresses cooperative navigation using range radios to enable absolute positioning of low-flying UAS (LF) while operating in GNSS-denied environments.
Mats Martens, Maarten Uijt de Haag
doaj   +1 more source

Review on non-relativistic gravity

open access: yesFrontiers in Physics, 2023
This study reviews the history of Newton–Cartan (NC) gravity with an emphasis on recent developments, including the covariant, off-shell large speed of light expansion of general relativity. Depending on the matter content, this expansion leads to either
Jelle Hartong   +3 more
doaj   +1 more source

Effects of stent shape on focal hemodynamics in intracranial atherosclerotic stenosis: A simulation study with computational fluid dynamics modeling

open access: yesFrontiers in Neurology, 2022
Background and aimsThe shape of a stent could influence focal hemodynamics and subsequently plaque growth or in-stent restenosis in intracranial atherosclerotic stenosis (ICAS).
Haipeng Liu   +9 more
doaj   +1 more source

Comparison of the absolute mass sensitivity of ring electrode QCM and standard QCM using electrodeposition

open access: yesElectrochemistry Communications, 2020
In this work, we experimentally measured the absolute mass sensitivity of quartz crystal microbalance (QCM) resonators with one ring electrode on the sensing side and compared it to standard QCM resonators with disc electrodes on both sides using ...
Jianguo Hu   +5 more
doaj   +1 more source

Fabry–Perot Cavity Optimization for Absolute Strain Sensing Using Finite Element Analysis

open access: yesSensors, 2023
The finite element method (FEM) was used to investigate the optical–mechanical behavior of a Fabry–Perot Interferometer (FPI) composed of a capillary segment spliced between two sections of standard optical fiber. The developed FEM model was validated by
João M. B. Pereira   +4 more
doaj   +1 more source

Ree geometries [PDF]

open access: yes, 2011
We introduce a rank 3 geometry for any Ree group over a not necessarily perfect field and show that its full collineation group is the automorphism group of the corresponding Ree group.
Haot, Fabienne   +2 more
core   +1 more source

Information geometry analysis example for absolute and relative transmission loss in a shallow ocean [PDF]

open access: yesJASA Express Letters
The model manifold, an information geometry tool, is a geometric representation of a model that can quantify the expected information content of modeling parameters.
Jay C. Spendlove   +2 more
doaj   +1 more source

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