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Symmetry, Volume 11, Issue 6

2019 June - 110 articles

Cover Story: The guitar is eco-friendly structure being made from wood. The best quality of guitar is assured by the best quality of wood. Wood is a anisotropic orthotropic material. The anatomical structural organisation of the top plate of guitar is reflected by symmetrical patterns, with the nodal lines well organised and parallel to the longitudinal axis of the plate, corresponding to the longitudinal symmetry axis of wood. View this paper.
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Articles (110)

  • Article
  • Open Access
34 Citations
3,727 Views
24 Pages

25 June 2019

An online neutrosophic similarity-based objectness tracking with a weighted multiple instance learning algorithm (NeutWMIL) is proposed. Each training sample is extracted surrounding the object location, and the distribution of these samples is symme...

(This article belongs to the Special Issue New types of Neutrosophic Set/Logic/Probability, Neutrosophic Over-/Under-/Off-Set, Neutrosophic Refined Set, and their Extension to Plithogenic Set/Logic/Probability, with Applications)
  • Article
  • Open Access
13 Citations
4,142 Views
15 Pages

Modified MHD Radiative Mixed Convective Nanofluid Flow Model with Consideration of the Impact of Freezing Temperature and Molecular Diameter

  • Umar Khan,
  • Adnan Abbasi,
  • Naveed Ahmed,
  • Sayer Obaid Alharbi,
  • Saima Noor,
  • Ilyas Khan,
  • Syed Tauseef Mohyud-Din and
  • Waqar A. Khan

25 June 2019

Magnetohydrodynamics (MHD) deals with the analysis of electrically conducting fluids. The study of nanofluids by considering the influence of MHD phenomena is a topic of great interest from an industrial and technological point of view. Thus, the mod...

(This article belongs to the Special Issue Symmetry and Fluid Mechanics)
  • Article
  • Open Access
6 Citations
6,766 Views
11 Pages

25 June 2019

Symmetry pervades nature, but asymmetry is also rather common. Deviations from genetically programmed symmetry are usually associated with internal or external developmental disturbances and may therefore be related to imperfections in physiological...

  • Article
  • Open Access
52 Citations
9,172 Views
15 Pages

25 June 2019

One of the pillars of experimental science is sampling. Based on the analysis of samples, estimations for populations are made. There is an entire science based on sampling. Distribution of the population, of the sample, and the connection among thos...

(This article belongs to the Special Issue Symmetry in Applied Mathematics)
  • Article
  • Open Access
4 Citations
2,562 Views
11 Pages

24 June 2019

In this paper we define the degenerate Carlitz-type ( p , q ) -Euler polynomials by generalizing the degenerate Euler numbers and polynomials, degenerate Carlitz-type q-Euler numbers and polynomials. We also give some theorems and exact formul...

(This article belongs to the Special Issue Polynomials: Special Polynomials and Number-Theoretical Applications)
  • Article
  • Open Access
13 Citations
4,268 Views
20 Pages

Total Weak Roman Domination in Graphs

  • Abel Cabrera Martínez,
  • Luis P. Montejano and
  • Juan A. Rodríguez-Velázquez

24 June 2019

Given a graph G = ( V , E ) , a function f : V → { 0 , 1 , 2 , ⋯ } is said to be a total dominating function if ∑ u ∈ N ( v ) f ( u ) > 0 for every v ∈ V , where N ( v ) denotes the op...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
9 Citations
4,818 Views
20 Pages

22 June 2019

In this paper, a kind of nonlinear Schrödinger (NLS) equation, called an NLS-like equation, is Riemann–Hilbert investigated. We construct a 2 × 2 Lax pair associated with the NLS equation and combine the spectral analysis to...

(This article belongs to the Special Issue Ordinary and Partial Differential Equations: Theory and Applications)
  • Article
  • Open Access
4 Citations
4,148 Views
19 Pages

22 June 2019

The aim of this work is to develop a “learning model” which outranks countries according to their confrontation of historical macroeconomic indicators for a given period of time with the spreads at the end of that time and to formulate a...

  • Article
  • Open Access
8 Citations
3,959 Views
20 Pages

22 June 2019

The default COSMO-RS (Conductor like Screening Model for Real Solvents) approach is incapable of accurate computation of C60 solubility in net solvents. Additionally, there is no adequate selection of single or multiple reference solvent, which can b...

(This article belongs to the Special Issue Applied Designs in Chemical Structures with High Symmetry)
  • Article
  • Open Access
44 Citations
5,026 Views
12 Pages

22 June 2019

In this paper, we study and investigate an interesting Caputo fractional derivative and Riemann–Liouville integral boundary value problem (BVP): c D 0 + q u ( t ) = f ( t , u ( t ) ) , t ∈ [ 0 , T ] , u ( k ) ...

(This article belongs to the Special Issue Advance in Nonlinear Analysis and Optimization)
  • Article
  • Open Access
78 Citations
15,495 Views
16 Pages

21 June 2019

Exploiting wind energy, which is a complex process in urban areas, requires turbines suitable for unfavorable weather conditions, in order to trap the wind from different directions; Savonius turbines are suitable for these conditions. In this paper,...

(This article belongs to the Special Issue Aero/Hydrodynamics and Symmetry)
  • Article
  • Open Access
7 Citations
3,518 Views
9 Pages

21 June 2019

In this paper, we surveyed the influence of learn effectiveness in a computer course under the factors of learning attitude and learning problems for students in senior-high school. We followed the formula for a regression line as R = A + BX +&epsilo...

(This article belongs to the Special Issue Selected Papers from IIKII 2019 conferences in Symmetry)
  • Article
  • Open Access
7 Citations
3,291 Views
12 Pages

21 June 2019

The impact of shallow tunnel construction on the surrounding environment is often considered as a symmetric half-plane problem with circular holes. In this research, the analytical solutions of the ground stresses and displacements of a shallow circu...

  • Article
  • Open Access
6 Citations
4,929 Views
11 Pages

21 June 2019

Coefficient of variation (CV) is a simple but useful statistical tool to make comparisons about the independent populations in many research areas. In this study, firstly, we proposed the asymptotic distribution for the ratio of the CVs of two separa...

(This article belongs to the Special Issue Symmetry in Applied Continuous Mechanics)
  • Article
  • Open Access
2 Citations
3,709 Views
32 Pages

Directional Thermodynamic Formalism

  • Mourad Ben Slimane,
  • Moez Ben Abid,
  • Ines Ben Omrane and
  • Borhen Halouani

21 June 2019

The usual thermodynamic formalism is uniform in all directions and, therefore, it is not adapted to study multi-dimensional functions with various directional behaviors. It is based on a scaling function characterized in terms of isotropic Sobolev or...

(This article belongs to the Special Issue Symmetry and Complexity 2019)
  • Article
  • Open Access
1 Citations
2,681 Views
8 Pages

20 June 2019

This study presents a filtering and sampling structure based on symmetrical second order systems working on half-period. It is shown that undamped second order oscillating systems working on half-period could provide: (i) a large attenuation coeffici...

(This article belongs to the Special Issue Symmetry and Dynamical Systems)
  • Concept Paper
  • Open Access
25 Citations
5,535 Views
16 Pages

20 June 2019

Spontaneous mirror symmetry breaking (SMSB), a phenomenon leading to non-equilibrium stationary states (NESS) that exhibits biases away from the racemic composition is discussed here in the framework of dissipative reaction networks. Such networks ma...

(This article belongs to the Special Issue Possible Scenarios for Homochirality on Earth)
  • Article
  • Open Access
5 Citations
4,010 Views
18 Pages

20 June 2019

Traffic data are the basis of traffic control, planning, management, and other implementations. Incomplete traffic data that are not conducive to all aspects of transport research and related activities can have adverse effects such as traffic status...

  • Article
  • Open Access
3 Citations
3,102 Views
10 Pages

On Two Conjectures of Abel Grassmann’s Groupoids

  • Xiaohong Zhang,
  • Yingcang Ma and
  • Peng Yu

20 June 2019

The quasi-cancellativity of Abel Grassmann‘s groupoids (AG-groupoids) are discussed and two conjectures are partially solved. First, the following conjecture is proved to be true: every AG-3-band is quasi-cancellative. Moreover, a new notion of...

  • Article
  • Open Access
13 Citations
3,939 Views
22 Pages

20 June 2019

Neutrosophic triangular norms (t-norms) and their residuated lattices are not only the main research object of neutrosophic set theory, but also the core content of neutrosophic logic. Neutrosophic implications are important operators of neutrosophic...

(This article belongs to the Special Issue New types of Neutrosophic Set/Logic/Probability, Neutrosophic Over-/Under-/Off-Set, Neutrosophic Refined Set, and their Extension to Plithogenic Set/Logic/Probability, with Applications)
  • Article
  • Open Access
6 Citations
5,599 Views
19 Pages

Radial and Bilateral Fluctuating Asymmetry of Iris pumila Flowers as Indicators of Environmental Stress

  • Nataša Barišić Klisarić,
  • Danijela Miljković,
  • Stevan Avramov,
  • Uroš Živković and
  • Aleksej Tarasjev

20 June 2019

In this study we compared the biomonitoring potential of various types of flower asymmetry indices in Iris pumila (Dwarf Bearded Iris). We chose 197 naturally growing clones from the arid steppe habitat in the largest sandy area in Europe (Deliblato...

(This article belongs to the Section D: Chemistry: Symmetry/Asymmetry)
  • Article
  • Open Access
2,882 Views
33 Pages

20 June 2019

In this paper, we study asymptotic semicircular laws induced both by arbitrarily fixed C * -probability spaces, and p-adic number fields { Q p } p ∈ P , as p→ ∞ in the set P of all primes.

(This article belongs to the Special Issue Number Theory and Symmetry)
  • Article
  • Open Access
48 Citations
4,911 Views
10 Pages

20 June 2019

In many real world problems, science fields such as biology, computer science, data mining, electrical and mechanical engineering, and signal processing, researchers aim to compare and classify several regression models. In this paper, a computationa...

(This article belongs to the Special Issue Symmetry in Applied Continuous Mechanics)
  • Article
  • Open Access
15 Citations
4,166 Views
19 Pages

Research on a Tool Wear Monitoring Algorithm Based on Residual Dense Network

  • Yiting Li,
  • Qingsheng Xie,
  • Haisong Huang and
  • Qipeng Chen

19 June 2019

To accurately and efficiently detect tool wear values during production and processing activities, a new online detection model is proposed called the Residual Dense Network (RDN). The model is created with two main steps: Firstly, the time-domain si...

(This article belongs to the Special Issue Novel Machine Learning Approaches for Intelligent Big Data 2019)
  • Article
  • Open Access
3 Citations
3,748 Views
15 Pages

19 June 2019

The control of heated fluid is of interest in many fields of engineering, such as boiler and heat exchanger design. The broken symmetry of a thermo-physical system within a multi-sized media could be used to control its physical characteristics. In t...

(This article belongs to the Special Issue Future and Prospects in Non-Newtonian and Nanofluids)
  • Article
  • Open Access
23 Citations
2,954 Views
12 Pages

19 June 2019

A system of variational inclusions (GSVI) is considered in Banach spaces. An implicit iterative procedure is proposed for solving the GSVI. Strong convergence of the proposed algorithm is given.

(This article belongs to the Special Issue Advance in Nonlinear Analysis and Optimization)
  • Article
  • Open Access
3 Citations
2,891 Views
13 Pages

19 June 2019

In the present paper, we solve the problem of determining the fuzzy distance between two subsets of a fuzzy metric space. We address the problem by reducing it to the problem of finding an optimal approximate solution of a fixed point equation. This...

(This article belongs to the Special Issue Advance in Nonlinear Analysis and Optimization)
  • Article
  • Open Access
2 Citations
2,674 Views
10 Pages

18 June 2019

An explicit mapping is given from the space of general complex meromorphic functions to a space of special time-dependent solutions of the 1 + 2-dimensional nonlinear diffusion equation with diffusivity depending on concentration as D = 1 / u. Th...

  • Article
  • Open Access
12 Citations
3,977 Views
12 Pages

Modeling of Glide-Symmetric Dielectric Structures

  • Zvonimir Sipus and
  • Marko Bosiljevac

18 June 2019

Recently, there has been an increased interest in exploring periodic structures having higher symmetry properties, primarily based on metallic realization. The design of dielectric glide-symmetric structures has many challenges, and this paper presen...

(This article belongs to the Special Issue Higher Symmetries and Its Application in Microwave Technology, Antennas and Metamaterials)
  • Article
  • Open Access
6 Citations
4,279 Views
13 Pages

Structural Properties of Vicsek-like Deterministic Multifractals

  • Eugen Mircea Anitas,
  • Giorgia Marcelli,
  • Zsolt Szakacs,
  • Radu Todoran and
  • Daniela Todoran

18 June 2019

Deterministic nano-fractal structures have recently emerged, displaying huge potential for the fabrication of complex materials with predefined physical properties and functionalities. Exploiting the structural properties of fractals, such as symmetr...

(This article belongs to the Special Issue Symmetry and Mesoscopic Physics)
  • Article
  • Open Access
9 Citations
2,975 Views
29 Pages

18 June 2019

It is well known that there are some unfavorable shortcomings in the ordinary operational rules (OORs) of intuitionistic fuzzy number (IFN), and there exists a close and forceful connection between the intuitionistic fuzzy set (IFS) and Dempster-Shaf...

  • Article
  • Open Access
33 Citations
8,630 Views
18 Pages

Intuitionistic Type-2 Fuzzy Set and Its Properties

  • Surajit Dan,
  • Mohuya B. Kar,
  • Saibal Majumder,
  • Bikashkoli Roy,
  • Samarjit Kar and
  • Dragan Pamucar

18 June 2019

Decision making under uncertainty describes situations that consider a profound lack of knowledge, where the functional form is completely unknown, and often, the relevant input and output variables are unknown as well. Data, being the vital input of...

(This article belongs to the Special Issue Multi-Criteria Decision-Making Techniques for Improvement Sustainability Engineering Processes)
  • Article
  • Open Access
4 Citations
3,263 Views
23 Pages

17 June 2019

The online sequential extreme learning machine with persistent regularization and forgetting factor (OSELM-PRFF) can avoid potential singularities or ill-posed problems of online sequential regularized extreme learning machines with forgetting factor...

  • Article
  • Open Access
20 Citations
3,703 Views
19 Pages

17 June 2019

The presence of symmetric and asymmetric voids directly affects the mechanical behaviors of tunnel linings and further induces tunnel diseases among influence factors. In this paper, 1:5-scale model tests were carried out to study the mechanical beha...

  • Article
  • Open Access
19 Citations
5,251 Views
20 Pages

17 June 2019

We demonstrate that when there is spontaneous symmetry breaking in any system, relativistic or non-relativistic, the dynamic of the Nambu-Goldstone bosons is governed by the Quantum Yang-Baxter equations. These equations describe the triangular dynam...

(This article belongs to the Special Issue Symmetries in the Universe)
  • Article
  • Open Access
4 Citations
2,883 Views
12 Pages

16 June 2019

The heat conduction equations with Caputo fractional derivative are considered in two joint half-planes under the conditions of perfect thermal contact. The fundamental solution to the Cauchy problem as well as the fundamental solution to the source...

(This article belongs to the Special Issue Symmetry in Complex Systems)
  • Article
  • Open Access
7 Citations
6,516 Views
37 Pages

16 June 2019

Multistable illusions occur when the visual system interprets the same image in two different ways. We model illusions using dynamic systems based on Wilson networks, which detect combinations of levels of attributes of the image. In most examples pr...

(This article belongs to the Special Issue Symmetry and Dynamical Systems)
  • Editorial
  • Open Access
6 Citations
3,043 Views
4 Pages

Symmetry in Engineering Sciences

  • Francisco G. Montoya,
  • Raúl Baños,
  • Alfredo Alcayde and
  • Francisco Manzano-Agugliaro

15 June 2019

The symmetry concept is mainly used in two senses. The first from the aesthetic point of view of proportionality or harmony, since human beings seek symmetry in nature. Or the second, from an engineering point of view to attend to geometric regularit...

(This article belongs to the Special Issue Symmetry in Engineering Sciences)
  • Feature Paper
  • Review
  • Open Access
10 Citations
9,697 Views
40 Pages

α-Amino Acids as Synthons in the Ugi-5-Centers-4-Components Reaction: Chemistry and Applications

  • Sveva Pelliccia,
  • Ilenia Antonella Alfano,
  • Ubaldina Galli,
  • Ettore Novellino,
  • Mariateresa Giustiniano and
  • Gian Cesare Tron

15 June 2019

Since the first reports, the Ugi four-component reaction (U-4CR) has been recognized as a keystone transformation enabling the synthesis of peptide mimetics in a single step and with high atom economy. In recent decades, the U-4CR has been a source o...

(This article belongs to the Section D: Chemistry: Symmetry/Asymmetry)
  • Article
  • Open Access
10 Citations
4,742 Views
9 Pages

Supply Voltage and Temperature Dependence of Single-Event Transient in 28-nm FDSOI MOSFETs

  • Jingyan Xu,
  • Yang Guo,
  • Ruiqiang Song,
  • Bin Liang and
  • Yaqing Chi

14 June 2019

Based on three-dimensional (3D) technology computer aided design (TCAD) simulations, the supply voltage and temperature dependence of single-event transient (SET) pulse width in 28-nm fully-depleted silicon-on-insulator (FDSOI) metal-oxide-semiconduc...

  • Article
  • Open Access
2 Citations
3,712 Views
14 Pages

Univariate and Bivariate Models Related to the Generalized Epsilon–Skew–Cauchy Distribution

  • Barry C. Arnold,
  • Héctor W. Gómez,
  • Héctor Varela and
  • Ignacio Vidal

14 June 2019

In this paper, we consider a stochastic representation of the epsilon–skew–Cauchy distribution, viewed as a member of the family of skewed distributions discussed in Arellano-Valle et al. (2005). The stochastic representation facilitates...

(This article belongs to the Special Issue Symmetric and Asymmetric Distributions: Theoretical Developments and Applications)
  • Article
  • Open Access
39 Citations
4,107 Views
23 Pages

Multi-Criteria Group Decision-Making Using an m-Polar Hesitant Fuzzy TOPSIS Approach

  • Muhammad Akram,
  • Arooj Adeel and
  • José Carlos R. Alcantud

14 June 2019

The m-polar fuzzy sets (mF sets) have a representative and fundamental role in several fields of science and decision-making. The fusion of mF sets with several other theories of mathematics has become a favorable practice for depicting numerous type...

  • Article
  • Open Access
16 Citations
6,857 Views
14 Pages

14 June 2019

The emergency department has an irreplaceable role in the hospital service system because of the characteristics of its emergency services. In this paper, a new patient queuing model with priority weight is proposed to optimize the management of emer...

  • Article
  • Open Access
112 Citations
8,345 Views
12 Pages

13 June 2019

Classifying semantic relations between entity pairs in sentences is an important task in natural language processing (NLP). Most previous models applied to relation classification rely on high-level lexical and syntactic features obtained by NLP tool...

  • Article
  • Open Access
7 Citations
3,963 Views
13 Pages

An Efficient Algorithm for mmWave MIMO Systems

  • Imran Khan,
  • Mohammed H. Alsharif,
  • Mohammad Haseeb Zafar,
  • Madini O. Alassafi,
  • Majid Ashraf,
  • Yongming Huang,
  • Jeong Kim and
  • Jin Hong Kim

13 June 2019

Efficient and Symmetry based precoding plays a key role in wireless communications. In order to improve the transmission performance of multi-user millimeter wave Multiple-Input Multiple-Output (MIMO) (MU-mmWave MIMO) systems, this paper proposes an...

  • Article
  • Open Access
21 Citations
3,771 Views
18 Pages

Face Recognition with Triangular Fuzzy Set-Based Local Cross Patterns in Wavelet Domain

  • Turker Tuncer,
  • Sengul Dogan,
  • Moloud Abdar,
  • Mohammad Ehsan Basiri and
  • Paweł Pławiak

13 June 2019

In this study, a new face recognition architecture is proposed using fuzzy-based Discrete Wavelet Transform (DWT) and fuzzy with two novel local graph descriptors. These graph descriptors are called Local Cross Pattern (LCP). The proposed fuzzy wavel...

  • Article
  • Open Access
11 Citations
2,878 Views
10 Pages

13 June 2019

The main aim of this paper is that for any second-order linear recurrence sequence, the generating function of which is f ( t ) = 1 1 + a t + b t 2 , we can give the exact coefficient expression of the power series expansion of f ...

(This article belongs to the Special Issue Current Trends in Symmetric Polynomials with Their Applications Ⅱ)
  • Article
  • Open Access
2,670 Views
14 Pages

13 June 2019

Two existence theorems of maximal elements in H-spaces are obtained without compactness. More accurately, we deal with the correspondence to be of L -majorized mappings in the setting of noncompact strategy sets but merely requiring a milder coe...

(This article belongs to the Special Issue Fixed Point Theory and Fractional Calculus with Applications)
  • Article
  • Open Access
39 Citations
20,139 Views
19 Pages

Skin Cancer Diagnostics with an All-Inclusive Smartphone Application

  • Upender Kalwa,
  • Christopher Legner,
  • Taejoon Kong and
  • Santosh Pandey

13 June 2019

Among the different types of skin cancer, melanoma is considered to be the deadliest and is difficult to treat at advanced stages. Detection of melanoma at earlier stages can lead to reduced mortality rates. Desktop-based computer-aided systems have...

  • Article
  • Open Access
17 Citations
3,779 Views
10 Pages

Integral Transform Method to Solve the Problem of Porous Slider without Velocity Slip

  • Naeem Faraz,
  • Yasir Khan,
  • Dian Chen Lu and
  • Marjan Goodarzi

13 June 2019

This study is about the lubrication of a long porous slider in which the fluid is injected into the porous bottom. The similarity transformation reduces the Navier-Stokes equations to couple nonlinear, ordinary differential equations, which are solve...

(This article belongs to the Special Issue Future and Prospects in Non-Newtonian and Nanofluids)

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Symmetry - ISSN 2073-8994