Results 1 to 10 of about 238,893 (183)

Kinematic Differential Geometry of a Line Trajectory in Spatial Movement

open access: yesAxioms, 2023
This paper investigates the kinematic differential geometry of a line trajectory in spatial movement. Specifically, we provide a theoretical expression of inflection line congruence, which is the spatial equivalent of the inflection circle of planar ...
Areej A. Almoneef, Rashad A. Abdel-Baky
doaj   +2 more sources

Broadband Waveguide-to-Differential-Line Transition in Multi-Layer Substrates With Triple Stacked Patch in 300 GHz Band

open access: yesIEEE Access
A broadband waveguide-to-differential-line transition with a triple stacked patch is proposed for use in 300 GHz band. This transition consists of differential signal lines inserted into the waveguide region from both broad walls of the waveguide.
Chatchai Chokchai   +4 more
doaj   +2 more sources

Book Review: Differential line geometry [PDF]

open access: yesBulletin of the American Mathematical Society, 1955
A. T. Schafer
openaire   +2 more sources

Numerical Analysis of Tooth Contact and Wear Characteristics of Internal Cylindrical Gears with Curved Meshing Line

open access: yesApplied Sciences
In order to improve the contact strength and reduce the sliding friction of the gear pair, an internal cylindrical gear pair with a curved meshing line is studied in this paper. Firstly, a curved meshing line is designed.
Chao Jia, Ge Zhang, Guoju Li
doaj   +2 more sources

Differential geometry properties of lines of curvature of parametric surfaces and their visualization

open access: yesGraphical Models, 2014
We present algorithms for computing the differential geometry properties of lines of curvature of parametric surfaces. We derive a unit tangent vector, curvature vector, binormal vector, torsion, and algorithms to evaluate their higher-order derivatives of lines of curvature of parametric surfaces. Among these quantities, it is shown that the curvature
Han Kyul Joo   +3 more
openaire   +2 more sources

Abelian reduction in differential-algebraic and bimeromorphic geometry [PDF]

open access: yesAnnales de l'Institut Fourier, 2022
A new tool for the model theory of differentially closed fields and of compact complex manifolds is here developed. In such settings, it is shown that a type internal to the field of constants (resp.
Rémi Jaoui, Rahim Moosa
semanticscholar   +1 more source

Electron Beams on the Brillouin Zone: A Cohomological Approach via Sheaves of Fourier Algebras

open access: yesUniverse, 2023
Topological states of matter can be classified only in terms of global topological invariants. These global topological invariants are encoded in terms of global observable topological phase factors in the state vectors of electrons. In condensed matter,
Elias Zafiris, Albrecht von Müller
doaj   +1 more source

Geometry of two-parametric family of linear line complexes

open access: yesLietuvos Matematikos Rinkinys, 2005
In this article differential geometry of two-parametric family of linear line complexes in the three-dimensional projective space is considered.
Kazimieras Navickis
doaj   +3 more sources

REAL TIME PROCESSING FOR EPIPOLAR RESAMPLING OF LINEAR PUSHBROOM IMAGERY BASED ON THE FAST ALGORITHM FOR BEST SCAN LINE SEARCHING [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
The epipolar resampling of linear pushbroom imagery is essential for automatic DEM extraction and feature collection. Due to the special imaging geometry of linear array scanners, the epipolar geometry of linear pushbroom imagery is very complex. In this
X. Geng, Q. Xu, S. Xing, C. Lan, Y. Hou
doaj   +1 more source

How Geometry Affects Sensitivity of a Differential Transformer for Contactless Characterization of Liquids

open access: yesItalian National Conference on Sensors, 2021
The electrical and dielectric properties of liquids can be used for sensing. Specific applications, e.g., the continuous in-line monitoring of blood conductivity as a measure of the sodium concentration during dialysis treatment, require contactless ...
M. Berger, A. Zygmanowski, S. Zimmermann
semanticscholar   +1 more source

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