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Symmetry, Volume 10, Issue 4

April 2018 - 50 articles

Cover Story: We study the spin-orbital splitting of the angular momentum for nonparaxial electromagnetic fields. The decomposition is calculated for a set of non-null electromagnetic knots presenting linkage for the electric and magnetic field lines. We demonstrate the relation between the spin-orbital decomposition and the magnetic and electric helicities. Even if the total angular momentum and the values of the spin and orbital momentum are the same, the behavior of the local angular momentum density depends on the time evolution of the helicities. View this paper
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Articles (50)

  • Article
  • Open Access
12 Citations
4,018 Views
23 Pages

22 April 2018

There are many practical decision-making problems in people’s lives, but the information given by decision makers (DMs) is often unclear and how to describe this information is of critical importance. Therefore, we introduce interval neutrosoph...

  • Feature Paper
  • Review
  • Open Access
7 Citations
4,200 Views
33 Pages

20 April 2018

This review is devoted to search for Lie and Q-conditional (nonclassical) symmetries and exact solutions of a class of reaction-diffusion-convection equations with exponential nonlinearities. A complete Lie symmetry classification of the class is der...

  • Article
  • Open Access
3 Citations
4,650 Views
20 Pages

Accountability Requirements in the Cloud Provider Chain

  • Martin Gilje Jaatun,
  • Inger Anne Tøndel,
  • Nils Brede Moe,
  • Daniela Soares Cruzes,
  • Karin Bernsmed and
  • Børge Haugset

20 April 2018

In order to be responsible stewards of other people’s data, cloud providers must be accountable for their data handling practices. The potential long provider chains in cloud computing introduce additional accountability challenges, with many s...

  • Article
  • Open Access
10 Citations
16,781 Views
25 Pages

Efficient Algorithms for Real-Time GPU Volumetric Cloud Rendering with Enhanced Geometry

  • Carlos Jiménez de Parga and
  • Sebastián Rubén Gómez Palomo

20 April 2018

This paper presents several new techniques for volumetric cloud rendering using efficient algorithms and data structures based on ray-tracing methods for cumulus generation, achieving an optimum balance between realism and performance. These techniqu...

  • Article
  • Open Access
29 Citations
5,210 Views
13 Pages

Neutrosophic Triplet Cosets and Quotient Groups

  • Mikail Bal,
  • Moges Mekonnen Shalla and
  • Necati Olgun

20 April 2018

In this paper, by utilizing the concept of a neutrosophic extended triplet (NET), we define the neutrosophic image, neutrosophic inverse-image, neutrosophic kernel, and the NET subgroup. The notion of the neutrosophic triplet coset and its relation w...

  • Article
  • Open Access
2 Citations
3,496 Views
10 Pages

19 April 2018

In this paper, the numerical solutions of von K a ´ rm a ´ n swirling viscous flow are obtained based on the effective combination of the symmetry method and the Runge-Kutta method. Firstly, the multi-parameter symmetry of von...

  • Feature Paper
  • Article
  • Open Access
17 Citations
5,353 Views
20 Pages

19 April 2018

Motivated by dynamical models describing phase separation and the motion of interfaces separating phases, we study the stability of dynamical networks in planar domains formed by triple junctions. We take into account symmetry, angle-intersection con...

  • Article
  • Open Access
13 Citations
4,992 Views
9 Pages

19 April 2018

Cosmetics pose challenges to the recognition performance of face and iris biometric systems due to its ability to alter natural facial and iris patterns. Facial makeup and iris contact lens are considered to be commonly applied cosmetics for the face...

  • Article
  • Open Access
10 Citations
5,844 Views
7 Pages

18 April 2018

(1) Background: The link between behavioral lateralization and bodily asymmetry in humans is studied to investigate the reliability of fluctuating asymmetry as a measure of developmental instability; (2) Methods: Morphological asymmetries of arms and...

  • Article
  • Open Access
27 Citations
9,063 Views
10 Pages

A Simple Method for Measuring the Bilateral Symmetry of Leaves

  • Peijian Shi,
  • Xiao Zheng,
  • David A. Ratkowsky,
  • Yang Li,
  • Ping Wang and
  • Liang Cheng

18 April 2018

Many plant leaves exhibit bilateral symmetry, but such symmetry has rarely been measured because of the lack of practical methods. We propose a simple method for achieving the above objective. A leaf is divided into left and right sides, and several...

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Symmetry - ISSN 2073-8994