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Symmetry, Volume 12, Issue 1

2020 January - 184 articles

Cover Story: Topological spin textures known as skyrmions have been discovered in various materials. They were immediately utilized in numerous industrial applications in various domains, from electronic transport to skyrmion-based racetrack memory and skyrmion-based transistor. Theoretical models and numerical simulations have been proposed to explain the fascinating properties of skyrmions. View this paper.
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Articles (184)

  • Article
  • Open Access
15 Citations
6,363 Views
13 Pages

20 January 2020

This article describes problems that occur when creating three-dimensional (3D) building models. The first problem is geometric accuracy; the next is the quality of visualization of the resulting model. The main cause of this situation is that curren...

(This article belongs to the Special Issue Selected Papers from IIKII 2019 conferences in Symmetry)
  • Article
  • Open Access
6 Citations
5,075 Views
19 Pages

A Method of L1-Norm Principal Component Analysis for Functional Data

  • Fengmin Yu,
  • Liming Liu,
  • Nanxiang Yu,
  • Lianghao Ji and
  • Dong Qiu

20 January 2020

Recently, with the popularization of intelligent terminals, research on intelligent big data has been paid more attention. Among these data, a kind of intelligent big data with functional characteristics, which is called functional data, has attracte...

(This article belongs to the Special Issue Novel Machine Learning Approaches for Intelligent Big Data 2019)
  • Article
  • Open Access
8 Citations
4,773 Views
8 Pages

20 January 2020

In sport sailing, performance is related to the sailor’s ability to maintain the stability of the boat, and the boat class determines the variables involved in such ability. In monohull-type vessels, such as the Optimist and Laser classes, the...

(This article belongs to the Section E: Life Sciences)
  • Article
  • Open Access
2 Citations
5,161 Views
18 Pages

20 January 2020

We present a Relativistic Newtonian Dynamics ( R N D ) for motion of objects in a gravitational field generated by a moving source. As in General Relativity ( G R ), we assume that objects move by a geodesic with respect to some metric, w...

(This article belongs to the Special Issue Relativity Based on Symmetry)
  • Article
  • Open Access
27 Citations
4,735 Views
14 Pages

Soliton Solutions of Mathematical Physics Models Using the Exponential Function Technique

  • Shumaila Javeed,
  • Khurram Saleem Alimgeer,
  • Sidra Nawaz,
  • Asif Waheed,
  • Muhammad Suleman,
  • Dumitru Baleanu and
  • M. Atif

19 January 2020

This paper is based on finding the exact solutions for Burger’s equation, Zakharov-Kuznetsov (ZK) equation and Kortewegde vries (KdV) equation by utilizing exponential function method that depends on the series of exponential functions. The exp...

  • Article
  • Open Access
3 Citations
4,294 Views
29 Pages

19 January 2020

A recent effort used two rational maps on the Riemann sphere to produce polyhedral structures with properties exemplified by a soccer ball. A key feature of these maps is their respect for the rotational symmetries of the icosahedron. The present art...

(This article belongs to the Special Issue Symmetry and Dynamical Systems)
  • Article
  • Open Access
5 Citations
3,805 Views
16 Pages

19 January 2020

Symmetry properties of a nonlinear two-dimensional space-fractional diffusion equation with the Riesz potential of the order α ( 0 , 1 ) are studied. Lie point symmetry group classification of this equation is performed with resp...

  • Article
  • Open Access
16 Citations
7,992 Views
14 Pages

A Novel Surface Inset Permanent Magnet Synchronous Motor for Electric Vehicles

  • Baojun Qu,
  • Qingxin Yang,
  • Yongjian Li,
  • Miguel Angel Sotelo,
  • Shilun Ma and
  • Zhixiong Li

19 January 2020

Aiming to successfully meet the requirements of a large output torque and a wide range of flux weakening speed expansion in permanent magnet synchronous motors (PMSM) for electric vehicles, a novel surface insert permanent magnet synchronous motor (S...

(This article belongs to the Special Issue Symmetry in Mechanical Engineering)
  • Article
  • Open Access
9 Citations
4,549 Views
9 Pages

19 January 2020

This article explains how discrete symmetry groups can be directly applied to obtain the particular solutions of nonlinear ordinary differential equations (ODEs). The particular solutions of some nonlinear ordinary differential equations have been ge...

  • Article
  • Open Access
78 Citations
7,344 Views
24 Pages

Modulational Instability, Inter-Component Asymmetry, and Formation of Quantum Droplets in One-Dimensional Binary Bose Gases

  • Thudiyangal Mithun,
  • Aleksandra Maluckov,
  • Kenichi Kasamatsu,
  • Boris A. Malomed and
  • Avinash Khare

18 January 2020

Quantum droplets are ultradilute liquid states that emerge from the competitive interplay of two Hamiltonian terms, the mean-field energy and beyond-mean-field correction, in a weakly interacting binary Bose gas. We relate the formation of droplets i...

(This article belongs to the Special Issue Symmetry and Mesoscopic Physics)
  • Article
  • Open Access
5 Citations
5,405 Views
19 Pages

18 January 2020

Non-magnetic impurity scattering effects on the vortex core states are theoretically studied to clarify the contributions from the sign-change of the pairing function in anisotropic superconductors. The vortex states are calculated by the Eilenberger...

(This article belongs to the Special Issue Vortex, Topology and Singularity in Quantum Systems)
  • Article
  • Open Access
36 Citations
5,927 Views
13 Pages

Lie Symmetry Analysis, Explicit Solutions and Conservation Laws of a Spatially Two-Dimensional Burgers–Huxley Equation

  • Amjad Hussain,
  • Shahida Bano,
  • Ilyas Khan,
  • Dumitru Baleanu and
  • Kottakkaran Sooppy Nisar

16 January 2020

In this paper, we investigate a spatially two-dimensional Burgers–Huxley equation that depicts the interaction between convection effects, diffusion transport, reaction gadget, nerve proliferation in neurophysics, as well as motion in liquid cr...

(This article belongs to the Special Issue Symmetry in Ordinary and Partial Differential Equations and Applications)
  • Article
  • Open Access
9 Citations
2,713 Views
12 Pages

w-b-Cone Distance and Its Related Results: A Survey

  • Reza Babaei,
  • Hamidreza Rahimi,
  • Manuel De la Sen and
  • Ghasem Soleimani Rad

16 January 2020

In this work, we define the concept of a w-b-cone distance in t v s -cone b-metric spaces which differs from generalized c-distance in cone b-metric spaces, and we discuss its properties. Our results are significant, since all of the results i...

(This article belongs to the Special Issue Nonlinear, Convex, Nonsmooth, Functional Analysis in Symmetry)
  • Article
  • Open Access
14 Citations
5,902 Views
19 Pages

16 January 2020

In a real-time system, a series of jobs invoked by each task should finish its execution before its deadline, and EDF (Earliest Deadline First) is one of the most popular scheduling algorithms to meet such timing constraints of a set of given tasks....

  • Article
  • Open Access
31 Citations
4,836 Views
15 Pages

16 January 2020

The aim of this study was to derive explicit formulas of the average run length (ARL) of a cumulative sum (CUSUM) control chart for seasonal and non-seasonal moving average processes with exogenous variables, and then evaluate it against the numerica...

  • Article
  • Open Access
8 Citations
2,659 Views
14 Pages

On Hypergroups with a β-Class of Finite Height

  • Mario De Salvo,
  • Dario Fasino,
  • Domenico Freni and
  • Giovanni Lo Faro

15 January 2020

In every hypergroup, the equivalence classes modulo the fundamental relation β are the union of hyperproducts of element pairs. Making use of this property, we introduce the notion of height of a β -class and we analyze propertie...

(This article belongs to the Special Issue Symmetry in Classical and Fuzzy Algebraic Hypercompositional Structures)
  • Article
  • Open Access
28 Citations
5,579 Views
9 Pages

The Generalized Distance Spectrum of the Join of Graphs

  • Abdollah Alhevaz,
  • Maryam Baghipur,
  • Hilal A. Ganie and
  • Yilun Shang

15 January 2020

Let G be a simple connected graph. In this paper, we study the spectral properties of the generalized distance matrix of graphs, the convex combination of the symmetric distance matrix D ( G ) and diagonal matrix of the vertex transmissions ...

  • Article
  • Open Access
5 Citations
2,775 Views
22 Pages

14 January 2020

We introduce the notions of neutrosophic extended triplet LA-semihypergroup, neutrosophic extended triplet LA-hypergroup, which can reflect some symmetry of hyperoperation and discuss the relationships among them and regular LA-semihypergroups, LA-hy...

  • Article
  • Open Access
4,673 Views
13 Pages

14 January 2020

This paper presents a foreground digital calibration algorithm based on a dynamic comparator that aims to reduce comparator offset and capacitor mismatch, as well as improve the performance of the successive approximation analog-to-digital converter...

  • Article
  • Open Access
9 Citations
3,885 Views
23 Pages

Efficient Lattice CP-ABE AC Scheme Supporting Reduced-OBDD Structure for CCN/NDN

  • Eric Affum,
  • Xiasong Zhang,
  • Xiaofen Wang and
  • John Bosco Ansuura

14 January 2020

In line with the proposed 5th Generation network, content centric network/named data networking (CCN/NDN) has been offered as one of the promising paradigms to cope with the communication needs of future realistic network communications. CCN/NDN allo...

  • Article
  • Open Access
10 Citations
3,741 Views
15 Pages

14 January 2020

Soft sensing technology has been proved to be an effective tool for the online estimation of unmeasured or variables that are difficult to directly measure. The performance of a soft sensor depends heavily on its convergence speed and generalization...

  • Article
  • Open Access
59 Citations
6,118 Views
25 Pages

A Novel Integrated Subjective-Objective MCDM Model for Alternative Ranking in Order to Achieve Business Excellence and Sustainability

  • Vladimir Marković,
  • Ljubiša Stajić,
  • Željko Stević,
  • Goran Mitrović,
  • Boris Novarlić and
  • Zoran Radojičić

14 January 2020

Achieving sustainability in constant development in every area in today’s modern business has become a challenge on the one hand, and an imperative on the other. If the aspect of business excellence achievement is also added to it, the complexi...

(This article belongs to the Special Issue Multi-Criteria Decision-Making Techniques for Improvement Sustainability Engineering Processes)
  • Article
  • Open Access
8 Citations
4,408 Views
8 Pages

Role of Geometric Shape in Chiral Optics

  • Philipp Gutsche,
  • Xavier Garcia-Santiago,
  • Philipp-Immanuel Schneider,
  • Kevin M. McPeak,
  • Manuel Nieto-Vesperinas and
  • Sven Burger

13 January 2020

The distinction of chiral and mirror symmetric objects is straightforward from a geometrical point of view. Since the biological as well as the optical activity of molecules strongly depend on their handedness, chirality has recently attracted high i...

(This article belongs to the Special Issue Duality Symmetry)
  • Article
  • Open Access
8 Citations
4,262 Views
19 Pages

13 January 2020

A two-dimensional numerical study was conducted for flow past a square rod in the presence of two control rods. One is placed vertically in the upstream direction and the second one is placed horizontally in the downstream direction of the square rod...

(This article belongs to the Special Issue Fluid Mechanics Physical Problems and Symmetry)
  • Article
  • Open Access
11 Citations
3,682 Views
15 Pages

13 January 2020

Columnar jointed rock mass (CJRM) is a highly symmetrical natural fractured structure. As the rock mass of the dam foundation of the Baihetan Hydropower Station, the study of its permeability anisotropy is of great significance to engineering safety....

  • Article
  • Open Access
17 Citations
5,203 Views
31 Pages

13 January 2020

In the current distributed manufacturing environment, more extensive enterprise cooperation is an effective means for shipbuilding companies to increase the competitiveness. However, considering the project scale and the uneven production capacity be...

  • Feature Paper
  • Article
  • Open Access
18 Citations
4,540 Views
21 Pages

13 January 2020

The application of autonomous robots in search and rescue missions represents a complex task which requires a robot to make robust decisions in unknown and dangerous environments. However, imprecise robot movements and small measurement errors obtain...

(This article belongs to the Special Issue Multi-Criteria Decision-Making Techniques for Improvement Sustainability Engineering Processes)
  • Article
  • Open Access
14 Citations
3,063 Views
15 Pages

A Method of Generating Fuzzy Implications with Specific Properties

  • Dimitrios S. Grammatikopoulos and
  • Basil K. Papadopoulos

12 January 2020

In this paper we introduce a new method of generating fuzzy implications via known fuzzy implications. We focus on the case of generating fuzzy implications via a fuzzy connective and at least one known fuzzy implication. We present some basic desira...

  • Article
  • Open Access
3 Citations
3,399 Views
8 Pages

Family Symmetries and Multi Higgs Doublet Models

  • Bartosz Dziewit,
  • Jacek Holeczek,
  • Sebastian Zając and
  • Marek Zrałek

12 January 2020

Imposing a family symmetry on the Standard Model in order to reduce the number of its free parameters, due to the Schur’s Lemma, requires an explicit breaking of this symmetry. To avoid the need for this symmetry to break, additional Higgs doub...

(This article belongs to the Special Issue Selected Papers from 43rd International Conference of Theoretical Physics: Matter to the Deepest, Recent Developments In Physics Of Fundamental Interactions (MTTD2019))
  • Article
  • Open Access
33 Citations
5,849 Views
22 Pages

12 January 2020

The presented manuscript deals with the impact of manufacturing flexibility on cost-time investment as a function of sustainable production, which addresses the company’s sustainable social and environmental impact adequately. The impact of man...

(This article belongs to the Special Issue Multi-Criteria Decision-Making Techniques for Improvement Sustainability Engineering Processes)
  • Feature Paper
  • Article
  • Open Access
24 Citations
6,842 Views
12 Pages

3D Printed Personalized Corneal Models as a Tool for Improving Patient’s Knowledge of an Asymmetric Disease

  • Jose S. Velázquez,
  • Francisco Cavas,
  • José M. Bolarín and
  • Jorge L. Alió

11 January 2020

Additive manufacturing is a vanguard technology that is currently being used in several fields in medicine. This study aims to evaluate the viability in clinical practice of a patient-specific 3D model that helps to improve the strategies of the doct...

(This article belongs to the Special Issue Symmetry in Engineering Sciences II)
  • Article
  • Open Access
16 Citations
3,368 Views
12 Pages

Disformal Transformations in Modified Teleparallel Gravity

  • Alexey Golovnev and
  • María José Guzmán

11 January 2020

In this work, we explore disformal transformations in the context of the teleparallel equivalent of general relativity and modified teleparallel gravity. We present explicit formulas in components for disformal transformations of the main geometric o...

(This article belongs to the Special Issue Selected Papers: 10th Mathematical Physics Meeting)
  • Article
  • Open Access
3 Citations
3,794 Views
15 Pages

Doubly Charged Higgs Bosons and Spontaneous Symmetry Breaking at eV and TeV Scales

  • Janusz Gluza,
  • Magdalena Kordiaczyńska and
  • Tripurari Srivastava

11 January 2020

In this paper, beyond standard models are considered with additional scalar triplets without modification of the gauge group (Higgs Triplet Model—HTM) and with an extended gauge group S U ( 2 ) R S U ( 2 ) L U ( 1...

(This article belongs to the Special Issue Selected Papers from 43rd International Conference of Theoretical Physics: Matter to the Deepest, Recent Developments In Physics Of Fundamental Interactions (MTTD2019))
  • Article
  • Open Access
39 Citations
6,210 Views
21 Pages

Classification of Kidney Cancer Data Using Cost-Sensitive Hybrid Deep Learning Approach

  • Ho Sun Shon,
  • Erdenebileg Batbaatar,
  • Kyoung Ok Kim,
  • Eun Jong Cha and
  • Kyung-Ah Kim

11 January 2020

Recently, large-scale bioinformatics and genomic data have been generated using advanced biotechnology methods, thus increasing the importance of analyzing such data. Numerous data mining methods have been developed to process genomic data in the fie...

  • Article
  • Open Access
2 Citations
3,125 Views
10 Pages

Nuclear Spin-Dependent Effects of Parity Nonconservation in Ortho-H2

  • Dmitry V. Chubukov,
  • Leonid V. Skripnikov,
  • Leonti N. Labzowsky and
  • Günter Plunien

10 January 2020

We report a theoretical treatment of the nuclear spin-dependent spatial parity nonconserving (NSD-PNC) electron–nuclear interaction effect in the diatomic homonuclear ortho-H 2 molecule. The magnetic dipole transition between v = 1 ...

(This article belongs to the Special Issue Development of New Methods in Atomic and Molecular Theory)
  • Article
  • Open Access
15 Citations
3,884 Views
21 Pages

10 January 2020

Joint-failure of steel tube bracing structures usually causes an excavation accident. A symmetrical bolt fasten wedge (BFW) active joint has been innovatively developed in this paper, which overcomes the shortcomings of the traditional steel wedge (S...

  • Article
  • Open Access
68 Citations
5,071 Views
16 Pages

10 January 2020

A numerical study was carried out to examine the magnetohydrodynamic (MHD) flow of micropolar fluid on a shrinking surface in the presence of both Joule heating and viscous dissipation effects. The governing system of non-linear ordinary differential...

(This article belongs to the Special Issue Symmetry in Newtonian and Non-Newtonian Fluids)
  • Article
  • Open Access
32 Citations
6,201 Views
25 Pages

Location Optimization of CR Express International Logistics Centers

  • Dmitri Muravev,
  • Hao Hu,
  • Hengshuo Zhou and
  • Dragan Pamucar

10 January 2020

Currently, the trade volume between China and the European Union is experiencing rapid growth. However, there are many bottlenecks in the operation of the China Railway Express, such as imbalance in inbound and outbound transported containers in the...

(This article belongs to the Special Issue Multi-Criteria Decision-Making Techniques for Improvement Sustainability Engineering Processes)
  • Article
  • Open Access
26 Citations
5,019 Views
14 Pages

10 January 2020

Weakly supervised and semi-supervised semantic segmentation has been widely used in the field of computer vision. Since it does not require groundtruth or it only needs a small number of groundtruths for training. Recently, some works use pseudo grou...

  • Article
  • Open Access
142 Citations
10,871 Views
17 Pages

10 January 2020

Face images contain many important biological characteristics. The research directions of face images mainly include face age estimation, gender judgment, and facial expression recognition. Taking face age estimation as an example, the estimation of...

  • Review
  • Open Access
45 Citations
10,173 Views
14 Pages

10 January 2020

Mechanically chiral molecules have attracted considerable attention due to their property and function based on its unique interlocked structure. This review covers the recent advances in the synthesis and function of interlocked rotaxanes with mecha...

(This article belongs to the Special Issue Symmetry and Asymmetry in Host-Guest Chemistry and Supramolecular Chemistry)
  • Article
  • Open Access
30 Citations
3,929 Views
19 Pages

Micromagnetorotation of MHD Micropolar Flows

  • Kyriaki-Evangelia Aslani,
  • Lefteris Benos,
  • Efstratios Tzirtzilakis and
  • Ioannis E. Sarris

10 January 2020

The studies dealing with micropolar magnetohydrodynamic (MHD) flows usually ignore the micromagnetorotation (MMR) effect, by assuming that magnetization and magnetic field vectors are parallel. The main objective of the present investigation is to me...

(This article belongs to the Special Issue Fluid Mechanics Physical Problems and Symmetry)
  • Feature Paper
  • Article
  • Open Access
14 Citations
3,109 Views
6 Pages

10 January 2020

We report a symmetry property of the Einstein–Friedmann equations for spatially flat Friedmann–Lemaître–Robertson–Walker universes filled with a perfect fluid with any constant equation of state. The symmetry transformat...

(This article belongs to the Special Issue Symmetry with Gravity and Particle Theories)
  • Feature Paper
  • Article
  • Open Access
3 Citations
3,529 Views
22 Pages

10 January 2020

With a focus on the multivariable coupling characteristics in a cross-directional (CD) basis weight control system, we study the coupling characteristics of a CD control system and decoupling control, and we propose a novel multivariable interpolatio...

  • Article
  • Open Access
31 Citations
5,998 Views
16 Pages

10 January 2020

The integration of Internet of things (IoT) and cloud computing technology has made our life more convenient in recent years. Cooperating with cloud computing, Internet of things can provide more efficient and practical services. People can accept Io...

(This article belongs to the Special Issue Symmetry and Asymmetry Applications for Internet of Things Security and Privacy)
  • Article
  • Open Access
5 Citations
3,188 Views
12 Pages

9 January 2020

We investigated an integrable five-point differential-difference equation called the discrete Sawada–Kotera equation. On the basis of the geometric series method, a new exact soliton-like solution of the equation is obtained that propagates wit...

(This article belongs to the Special Issue Asymptotic Methods in the Mechanics and Nonlinear Dynamics)
  • Article
  • Open Access
8 Citations
3,052 Views
15 Pages

9 January 2020

The optimization of the pulsed laser deposition process was attempted here for the generation of hydroxyapatite thin films. The deposition process was monitored with an ICCD (Intensified Coupled Charged Device) fast gated camera and a high-resolution...

(This article belongs to the Special Issue Advances in Laser Produced Plasmas Research)
  • Feature Paper
  • Article
  • Open Access
11 Citations
4,709 Views
10 Pages

Forgery Detection and Localization of Modifications at the Pixel Level

  • Sahib Khan,
  • Khalil Khan,
  • Farman Ali and
  • Kyung-Sup Kwak

9 January 2020

In this paper, we present a new technique of image forgery detection. The proposed technique uses digital signatures embedded in the least significant bits of the selected pixels of each row and column. The process maintains a symmetry in the use of...

  • Article
  • Open Access
5 Citations
2,832 Views
24 Pages

9 January 2020

Since the rough sets theory based on the double quantification method was proposed, it has attracted wide attention in decision-making. This paper studies the decision-making approach in Incomplete Ordered Information System (IOIS). Firstly, to bette...

  • Article
  • Open Access
1 Citations
2,574 Views
15 Pages

9 January 2020

This paper defines two new concepts: the concept of multivalued left-weighted mean contractions in the generalized sense of Nadler in a symmetric generalized metric space and the concept of multivalued right-weighted mean contractions in the generali...

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Symmetry - ISSN 2073-8994