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Symmetry, Volume 15, Issue 2

February 2023 - 311 articles

Cover Story: The anisotropy of physical phenomena is indissociable from the symmetry of the considered system or the absence thereof. This interdependence is central to magnetism, where the pseudovector character of the spin and orbital magnetic moments renders geometry arguments particularly appealing. Theoretical investigations demonstrate how adatoms can be used to trigger and control the chirality of the magnetic interactions in small transition-metal alloy clusters. Quantitative relations between symmetry breaking, local atomic environment, and chiral couplings are revealed by performing quantum-mechanical calculations of the electronic energy of the alloy clusters and by carrying out a local analysis of the results for different magnetic textures, including their respective mirror images. View this paper
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Articles (311)

  • Article
  • Open Access
2 Citations
2,779 Views
27 Pages

Developing a Fast-Processing Novel Algorithm for Contact Analysis of Standard Spur Gears

  • Stelian Cazan,
  • Shubrajit Bhaumik,
  • Viorel Paleu and
  • Spiridon Crețu

19 February 2023

Numerical methods have gained momentum among specific engineering problems that must be solved in such a manner that accuracy and speed are the two most important aspects to consider regarding the output. This paper presents a fast, semi-analytical m...

  • Article
  • Open Access
9 Citations
2,091 Views
10 Pages

Oscillation of Emden–Fowler-Type Differential Equations with Non-Canonical Operators and Mixed Neutral Terms

  • Sathish Kumar Marappan,
  • Alanoud Almutairi,
  • Loredana Florentina Iambor and
  • Omar Bazighifan

19 February 2023

The study of the symmetric properties of differential equations is essential for identifying effective methods for solving them. In this paper, we examine the oscillatory behavior of solutions of Emden–Fowler-type mixed non-linear neutral diffe...

  • Article
  • Open Access
3 Citations
2,170 Views
12 Pages

19 February 2023

We explore the correlation of the neutrinoless double-β decay nuclear matrix element (NME) with electric quadrupole (E2) strength in the framework of the Hamiltonian-based generator-coordinate method, which is a configuration-mixing calculation...

  • Article
  • Open Access
7 Citations
3,147 Views
10 Pages

Controlling I-V Hysteresis in Al/Pt Bilayer Symmetric SQUIDs at Millikelvin Temperatures

  • Dmitry S. Yakovlev,
  • Ivan A. Nazhestkin,
  • Nidzhat G. Ismailov,
  • Sergei V. Egorov,
  • Vladimir N. Antonov and
  • Vladimir L. Gurtovoi

18 February 2023

We study operation of a superconducting quantum interference devices (SQUIDs) based on a new bilayer material. They can be used for the ultra-sensitive detection of magnetic momentum at temperatures down to milliKelvin range. Typically, thermal origi...

  • Article
  • Open Access
1,688 Views
15 Pages

18 February 2023

For H a Hopf quasigroup and C, a left quasi H-comodule coalgebra, we show that the smash coproduct C⋊H (as a symmetry of smash product) is linked to some quotient coalgebra Q=C/CH*+ by a Morita-Takeuchi context (as a symmetry of Morita context)...

  • Article
  • Open Access
3 Citations
2,583 Views
19 Pages

Thermodynamics of the Acceleration of the Universe in the κ(R, T) Gravity Model

  • Archana Dixit,
  • Sanjeev Gupta,
  • Anirudh Pradhan and
  • Aroonkumar Beesham

18 February 2023

In this article, we examined the behavior of dark energy (DE) and the cosmic acceleration in the framework of κ(R,T) gravity in the standard spherically symmetric coordinates (xi) = t,r,θ,ϕ, a spatially homogeneous and isotropic FLRW...

  • Feature Paper
  • Article
  • Open Access
9 Citations
2,555 Views
22 Pages

18 February 2023

In supersymmetry (SUSY) models with low electroweak naturalness (natSUSY), which have been suggested to be the most likely version of SUSY to emerge from the string landscape, higgsinos are expected at the few hundred GeV scale, whilst electroweak ga...

  • Article
  • Open Access
3,611 Views
26 Pages

Design and Development of a Geometric Calculator in CATIA

  • José Ignacio Rojas-Sola,
  • Gloria del Río-Cidoncha,
  • Rafael Ortíz-Marín and
  • Andrés Cebolla-Cano

18 February 2023

In this article, an application in the field of engineering graphics is presented for the design of a geometric calculator generated as a macro in CATIA V5. The code of this macro is written in the CATVBA language and utilizes the CATIA internal edit...

  • Article
  • Open Access
3 Citations
3,000 Views
14 Pages

Spectral-Spatial Feature Enhancement Algorithm for Nighttime Object Detection and Tracking

  • Yan Lv,
  • Wei Feng,
  • Shuo Wang,
  • Gabriel Dauphin,
  • Yali Zhang and
  • Mengdao Xing

17 February 2023

Object detection and tracking has always been one of the important research directions in computer vision. The purpose is to determine whether the object is contained in the input image and enclose the object with a bounding box. However, most object...

  • Article
  • Open Access
16 Citations
3,365 Views
23 Pages

Machine Learning Approach for Prediction of Lateral Confinement Coefficient of CFRP-Wrapped RC Columns

  • Xingsi Xue,
  • Celestine Makota,
  • Osamah Ibrahim Khalaf,
  • Jagan Jayabalan,
  • Pijush Samui and
  • Ghaida Muttashar Abdulsahib

17 February 2023

Materials have a significant role in creating structures that are durable, valuable and possess symmetry engineering properties. Premium quality materials establish an exemplary environment for every situation. Among the composite materials in constr...

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Symmetry - ISSN 2073-8994