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Symmetry, Volume 12, Issue 11

2020 November - 184 articles

Cover Story: It has already been reported how the enantiomeric recognition abilities of chiral pyridino-18-crown-6 ethers change upon modification of several of their structural features. However, the effect of the substituent at the pyridine ring has not been studied. To gain information about this, the enantiomeric discrimination of a set of chiral pyridino-18-crown-6 ethers having different substituents at position 4 of the pyridine ring was examined by isothermal titration calorimetry. View this paper.
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Articles (184)

  • Article
  • Open Access
9 Citations
4,680 Views
26 Pages

Symmetry/Asymmetry of the NHN Hydrogen Bond in Protonated 1,8-Bis(dimethylamino)naphthalene

  • Patrycja Piękoś,
  • Aneta Jezierska,
  • Jarosław J. Panek,
  • Eugene A. Goremychkin,
  • Alexander F. Pozharskii,
  • Alexander S. Antonov,
  • Peter M. Tolstoy and
  • Aleksander Filarowski

23 November 2020

Experimental and theoretical results are presented based on vibrational spectra and motional dynamics of 1,8-bis(dimethylamino)naphthalene (DMAN) and its protonated forms (DMANH+ and the DMANH+ HSO4− complex). The studies of these compounds hav...

(This article belongs to the Special Issue Quantum Chemistry)
  • Article
  • Open Access
2,822 Views
17 Pages

Interaction Patterns for Staggered Assembly of Fibrils from Semiflexible Chains

  • Arnoud Jongeling,
  • Carsten Svaneborg and
  • Renko de Vries

23 November 2020

The design of colloidal interactions to achieve target self-assembled structures has especially been done for compact objects such as spheres with isotropic interaction potentials, patchy spheres and other compact objects with patchy interactions. In...

(This article belongs to the Special Issue Emergent Order Parameters in Complex Biophysical Systems)
  • Article
  • Open Access
2 Citations
2,958 Views
8 Pages

23 November 2020

Stochastic variability is ubiquitous among astrophysical sources. Quantifying stochastic properties of observed time-series or lightcurves, can provide insights into the underlying physical mechanisms driving variability, especially those of the part...

(This article belongs to the Special Issue Cosmic Rays)
  • Article
  • Open Access
83 Citations
3,794 Views
25 Pages

23 November 2020

Object recognition in depth images is challenging and persistent task in machine vision, robotics, and automation of sustainability. Object recognition tasks are a challenging part of various multimedia technologies for video surveillance, human&ndas...

  • Article
  • Open Access
12 Citations
3,555 Views
11 Pages

Total Domination in Rooted Product Graphs

  • Abel Cabrera Martínez and
  • Juan A. Rodríguez-Velázquez

23 November 2020

During the last few decades, domination theory has been one of the most active areas of research within graph theory. Currently, there are more than 4400 published papers on domination and related parameters. In the case of total domination, there ar...

(This article belongs to the Special Issue Theoretical Computer Science and Discrete Mathematics)
  • Article
  • Open Access
19 Citations
3,171 Views
17 Pages

23 November 2020

Identifying the hidden features of items and users of a modern recommendation system, wherein features are represented as hierarchical structures, allows us to understand the association between the two entities. Moreover, when tag information that i...

(This article belongs to the Special Issue Recent Advances in Social Data and Artificial Intelligence 2019)
  • Article
  • Open Access
20 Citations
5,705 Views
19 Pages

Cyber Attack Prevention Based on Evolutionary Cybernetics Approach

  • Dmitry Zegzhda,
  • Daria Lavrova,
  • Evgeny Pavlenko and
  • Anna Shtyrkina

23 November 2020

The paper looks at the problem of cybersecurity in modern cyber–physical systems and proposes an evolutionary model approach to counteract cyber attacks by self-regulating the structure of the system, as well as several evolutionary indicators...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
13 Citations
3,061 Views
21 Pages

23 November 2020

Multi-attribute group decision-making (MAGDM) is widely applied to various areas for solving real-life problems, including technology selection, credit assessment, strategic planning evaluation, supplier selection, etc. To describe the complex and im...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
16 Citations
8,702 Views
20 Pages

22 November 2020

Topic keyword extraction (as a typical task in information retrieval) refers to extracting the core keywords from document topics. In an online environment, students often post comments in subject forums. The automatic and accurate extraction of keyw...

(This article belongs to the Special Issue Symmetry and Asymmetry in Communications Engineering)
  • Article
  • Open Access
5 Citations
2,886 Views
14 Pages

Multistage Estimation of the Scale Parameter of Rayleigh Distribution with Simulation

  • Ali Yousef,
  • Emad E. H. Hassan,
  • Ayman A. Amin and
  • Hosny I. Hamdy

22 November 2020

This paper discusses the sequential estimation of the scale parameter of the Rayleigh distribution using the three-stage sequential sampling procedure proposed by Hall (Ann. Stat.1981, 9, 1229–1238). Both point and confidence interval estimatio...

(This article belongs to the Special Issue Skewed (Asymmetrical) Probability Distributions and Applications across Disciplines)
  • Article
  • Open Access
13 Citations
4,932 Views
18 Pages

Multi-Parameter Optimization of an InP Electro-Optic Modulator

  • Mikhail Stepanenko,
  • Igor Yunusov,
  • Vadim Arykov,
  • Pavel Troyan and
  • Yury Zhidik

21 November 2020

In this article, a method for indium phosphide (InP) electro-optic modulator (EOM) optimization is introduced. The method can be used for the design and analysis of an EOM based on the Mach-Zehnder interferometer (MZI) design. This design is based on...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
6 Citations
3,225 Views
18 Pages

Ontology-Based Decision Support Tool for Automatic Sleep Staging Using Dual-Channel EEG Data

  • Bingtao Zhang,
  • Zhifei Yang,
  • Hanshu Cai,
  • Jing Lian,
  • Wenwen Chang and
  • Zhonglin Zhang

21 November 2020

Sleep staging has attracted significant attention as a critical step in auxiliary diagnosis of sleep disease. To avoid subjectivity of doctor’s manual sleep staging, and to realize scientific management of massive physiological data, an ontolog...

  • Article
  • Open Access
2 Citations
2,947 Views
14 Pages

21 November 2020

A new method of line shape calculations of hydrogen-like atoms in magnetized plasmas is presented. This algorithm makes it possible to solve two fundamental problems in the broadening theory: the analytical description of the radiation transition arr...

(This article belongs to the Special Issue New Trends in Plasma Physics)
  • Article
  • Open Access
8 Citations
3,134 Views
26 Pages

20 November 2020

Quantum teleportation has had notorious advances in the last decade, being successfully deployed in the experimental domain. In other terrains, the understanding of indefinite causal order has demonstrated a valuable enhancement in quantum communicat...

(This article belongs to the Special Issue Symmetries in Quantum Mechanics)
  • Article
  • Open Access
3 Citations
2,901 Views
10 Pages

Hand Preference in Rhinopithecus roxellana Infants: Is It Influenced by Familial Inheritance?

  • Wei-Wei Fu,
  • Yi Ren,
  • Cheng-Liang Wang,
  • Xiao-Wei Wang and
  • Bao-Guo Li

20 November 2020

The Sichuan snub-nosed monkey (Rhinopithecus roxellana) is a typical arboreal group-living Old-World primate and has been studied broadly in hand preference. However, infants have not been tested independently from other immature individuals to date....

  • Article
  • Open Access
3 Citations
2,285 Views
12 Pages

20 November 2020

We analyze the structure of excited states of new heavy hadrons in the scenario with hadronic dark matter. Fine mass-splitting in a doublet of new mesons stipulates the existence of charged metastable heavy mesons. We describe the structure of new me...

(This article belongs to the Special Issue Symmetry beyond the Standard Models of Cosmology, High Energy Physics and Quantum Field Theory)
  • Article
  • Open Access
1 Citations
3,165 Views
18 Pages

20 November 2020

Departing from a general stochastic model for a moving boundary problem, we consider the density function of probability for the first passing time. It is well known that the distribution of this random variable satisfies a problem ruled by an advect...

(This article belongs to the Special Issue Advances in Stochastic Differential Equations)
  • Article
  • Open Access
9 Citations
7,431 Views
19 Pages

20 November 2020

The protection of information processed electronically involves a large number of IT devices from computer sets or laptops to monitors, printers, servers, etc. In many cases, classified information processing might be associated with the use of proje...

(This article belongs to the Special Issue Symmetry and Asymmetry in Communications Engineering)
  • Article
  • Open Access
4 Citations
3,313 Views
10 Pages

Image Denoising Based on Bivariate Distribution

  • Ping Zhao,
  • Xingyu Zhao and
  • Chun Zhao

20 November 2020

The literature has shown that the performance of the de-noising algorithm was greatly influenced by the dependencies between wavelet coefficients. In this paper, the bivariate probability density function (PDF) was proposed which was symmetric, and t...

(This article belongs to the Special Issue Symmetry in Artificial Visual Perception and Its Application)
  • Feature Paper
  • Review
  • Open Access
7 Citations
7,076 Views
29 Pages

20 November 2020

Liquid crystalline (LC) organic radicals were expected to show a novel non-linear magnetic response to external magnetic and electric fields due to their coherent collective molecular motion. We have found that a series of chiral and achiral all-orga...

(This article belongs to the Special Issue Chemical Symmetry Breaking)
  • Feature Paper
  • Article
  • Open Access
16 Citations
3,828 Views
16 Pages

20 November 2020

This paper proposes a further development of the mathematical theory of swarms to behavioral dynamics of social and economic systems, with an application to the modeling of price series in a market. The complexity features of the system are properly...

(This article belongs to the Special Issue Complexity and Symmetry in the Science of Living Systems: Active Particle Methods)
  • Article
  • Open Access
8 Citations
2,891 Views
13 Pages

20 November 2020

The exotic options with curved nonlinear payoffs have been traded in financial markets, which offer great flexibility to participants in the market. Among them, power options with the payoff depending on a certain power of the underlying asset price...

(This article belongs to the Special Issue Advances in Stochastic Differential Equations)
  • Article
  • Open Access
4 Citations
2,934 Views
10 Pages

20 November 2020

This paper reports evidence that the antiferromagnetic and insulating ground state of MnO is caused by a nonadiabatic atomic-like motion, as is evidently the case in NiO. In addition, it is shown that experimental findings on the displacements of the...

  • Article
  • Open Access
2 Citations
2,461 Views
11 Pages

20 November 2020

In this paper, further research is conducted for a synergetic model that describes the state of the material surface in the process of laser irradiation. Namely, the previously studied approach of mutually coordinated behavior of the relaxation field...

(This article belongs to the Special Issue Recent Advances in the Study of Symmetry and Continuum Mechanics)
  • Article
  • Open Access
5 Citations
2,576 Views
22 Pages

20 November 2020

Herein, we present a new parallel extragradient method for solving systems of variational inequalities and common fixed point problems for demicontractive mappings in real Hilbert spaces. The algorithm determines the next iterate by computing a compu...

(This article belongs to the Special Issue Symmetry in Nonlinear Functional Analysis and Optimization Theory)
  • Article
  • Open Access
2,182 Views
16 Pages

20 November 2020

Optimization by refinement of linguistic contexts produced from an output variable in the construction of an incremental granular model (IGM) is presented herein. In contrast to the conventional learning method using the backpropagation algorithm, we...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
2 Citations
2,492 Views
28 Pages

20 November 2020

Consider a compact manifold with boundary, homeomorphic to the N-dimensional disk, and a Tonelli Lagrangian function defined on the tangent bundle. In this paper, we study the multiplicity problem for Euler-Lagrange orbits that satisfy the conormal b...

(This article belongs to the Special Issue Recent Advance in Mathematical Physics)
  • Article
  • Open Access
1 Citations
2,851 Views
12 Pages

20 November 2020

The paper describes approximations properties of monotonically increasing sequences of invariant subspaces of a self-adjoint operator, as well as their symmetric generalizations in a complex Hilbert space, generated by its positive powers. It is esta...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
1 Citations
4,145 Views
20 Pages

Quasi-Delay-Insensitive Implementation of Approximate Addition

  • Padmanabhan Balasubramanian and
  • Nikos E. Mastorakis

20 November 2020

Asynchronous quasi-delay-insensitive (QDI) implementation of approximate addition is described in this article. The objective is to provide an insight into the optimization in design metrics that can be achieved with approximate addition compared to...

(This article belongs to the Special Issue Simulation and Modelling in Natural Sciences, Economics, Biomedicine and Engineering)
  • Article
  • Open Access
25 Citations
5,568 Views
19 Pages

19 November 2020

Fractional-order (FO) differential equations are more and more frequently applied to describe real-world applications or models of phenomena. Despite such models exhibiting high flexibility and good fits to experimental data, they introduce their inh...

(This article belongs to the Special Issue PID Control and Symmetry)
  • Article
  • Open Access
13 Citations
2,660 Views
9 Pages

19 November 2020

We consider analytical solutions describing the generation of internal gravity waves far from a non-local source of disturbances. We suppose that the source moves on the surface of stratified medium of a finite depth. A model distribution of the non-...

(This article belongs to the Special Issue Wave Processes in Fluids with Symmetric Density Stratification)
  • Review
  • Open Access
6 Citations
4,469 Views
15 Pages

19 November 2020

The study of chiral symmetry breaking in liquid crystals and the consequent emergence of ferroelectric and antiferroelectric phases is described. Furthermore, we show that the frustration between two phases induces a variety of structural phases call...

(This article belongs to the Special Issue Chemical Symmetry Breaking)
  • Review
  • Open Access
16 Citations
7,082 Views
23 Pages

Identification and Prediction of Human Behavior through Mining of Unstructured Textual Data

  • Mohammad Reza Davahli,
  • Waldemar Karwowski,
  • Edgar Gutierrez,
  • Krzysztof Fiok,
  • Grzegorz Wróbel,
  • Redha Taiar and
  • Tareq Ahram

19 November 2020

The identification of human behavior can provide useful information across multiple job spectra. Recent advances in applying data-based approaches to social sciences have increased the feasibility of modeling human behavior. In particular, studying h...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
10 Citations
3,631 Views
19 Pages

19 November 2020

Analog circuit fault diagnosis technology is widely used in the diagnosis of various electronic devices. The basic strategy is to extract circuit fault characteristics and then to use a clustering algorithm for diagnosis. The discrete Volterra series...

  • Feature Paper
  • Review
  • Open Access
26 Citations
5,216 Views
12 Pages

19 November 2020

Vapochromic materials, which change color and luminescence when exposed to specific vapors and gases, have attracted considerable attention in recent years owing to their potential applications in a wide range of fields such as chemical sensors and e...

(This article belongs to the Special Issue Chemical Symmetry Breaking)
  • Feature Paper
  • Article
  • Open Access
4 Citations
2,622 Views
19 Pages

Symmetry and Asymmetry in the Thermo-Magnetic Convection of Silver Nanofluid

  • Elzbieta Fornalik-Wajs,
  • Aleksandra Roszko and
  • Janusz Donizak

18 November 2020

Application of nanofluids is aimed at enhancing the heat transfer performance the same as the utilization of a strong magnetic field. The potential of the combined effect of these passive and active methods was analyzed numerically. The silver nanofl...

(This article belongs to the Special Issue Symmetry in Fluid Flow)
  • Article
  • Open Access
12 Citations
3,193 Views
23 Pages

18 November 2020

As a novel meta-heuristic algorithm, the Whale Optimization Algorithm (WOA) has well performance in solving optimization problems. However, WOA usually tends to trap in local optimal and it suffers slow convergence speed for large-scale and high-dime...

(This article belongs to the Section A: Computer Science)
  • Feature Paper
  • Article
  • Open Access
2 Citations
3,107 Views
10 Pages

18 November 2020

We give a new approximation with respect of the traditional parametrix method of the solution of a parabolic equation whose generator is of big order and under the Hoermander form. This generalizes to a higher order generator the traditional approxim...

(This article belongs to the Special Issue Symmetry in Ordinary and Partial Differential Equations and Applications)
  • Article
  • Open Access
6 Citations
5,238 Views
27 Pages

An Empirical Analysis of Test Input Generation Tools for Android Apps through a Sequence of Events

  • Husam N. Yasin,
  • Siti Hafizah Ab Hamid,
  • Raja Jamilah Raja Yusof and
  • Muzaffar Hamzah

18 November 2020

Graphical User Interface (GUI) testing of Android apps has gained considerable interest from the industries and research community due to its excellent capability to verify the operational requirements of GUI components. To date, most of the existing...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
18 Citations
3,672 Views
13 Pages

18 November 2020

During the last two centuries, after the question asked by Euler concerning mutually orthogonal Latin squares (MOLS), essential advances have been made. MOLS are considered as a construction tool for orthogonal arrays. Although Latin squares have num...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
31 Citations
3,217 Views
16 Pages

An External Parameter Independent Novel Cost Function for Evolving Bijective Substitution-Boxes

  • Alejandro Freyre-Echevarría,
  • Ahmad Alanezi,
  • Ismel Martínez-Díaz,
  • Musheer Ahmad,
  • Ahmed A. Abd El-Latif,
  • Hoshang Kolivand and
  • Abdul Razaq

18 November 2020

The property of nonlinearity has high importance for the design of strong substitution boxes. Therefore, the development of new techniques to produce substitution boxes with high values of nonlinearity is essential. Many research papers have shown th...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
15 Citations
5,253 Views
18 Pages

Stakeholder Symbiosis in the Context of Corporate Social Responsibility

  • Danli Wang,
  • Weidong Zhu,
  • Chao Zhang,
  • Hongyi Li and
  • Yong Wu

18 November 2020

With the rise of corporate social responsibility (CSR) and the great changes of the organization scale of the modern enterprise, it is difficult to maintain an ideal development only by maximizing the equity of shareholders. The co-governance of stak...

  • Article
  • Open Access
16 Citations
3,643 Views
12 Pages

17 November 2020

The two most important aspects of material research using deep learning (DL) or machine learning (ML) are the characteristics of materials data and learning algorithms, where the proper characterization of materials data is essential for generating a...

(This article belongs to the Special Issue Soft Computing and MCDA Methods for Support Decision Making)
  • Article
  • Open Access
21 Citations
4,616 Views
17 Pages

Fluctuating Asymmetry as a Method of Assessing Environmental Stress in Two Predatory Carabid Species within Mediterranean Agroecosystems

  • Lara Ivanković Tatalović,
  • Barbara Anđelić,
  • Mišel Jelić,
  • Tomislav Kos,
  • Hugo A. Benítez and
  • Lucija Šerić Jelaska

17 November 2020

Fluctuating asymmetry (FA) is used in assessing the effect of environmental stress on the development stability of individuals by measuring small random deviations from perfect bilateral symmetry. Here, we checked for FA on two predatory carabid beet...

(This article belongs to the Special Issue Fluctuating Asymmetry as a Measure of Stress)
  • Article
  • Open Access
30 Citations
5,385 Views
28 Pages

16 November 2020

Oil and Gas organizations are dependent on their IT infrastructure, which is a small part of their industrial automation infrastructure, to function effectively. The oil and gas (O&G) organizations industrial automation infrastructure landscape i...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
13 Citations
2,868 Views
20 Pages

16 November 2020

It is important for underwater wireless sensor networks (UWSNs) to satisfy the diverse monitoring demands in harsh and perilous three-dimensional underwater environments. After the monitoring missions and demands transform, a large number of underwat...

(This article belongs to the Section A: Computer Science)
  • Article
  • Open Access
7 Citations
3,188 Views
17 Pages

16 November 2020

This article proposes a new nonlinear state-feedback stability controller utilizing linear matrix inequality (LMI) for time-delay nonlinear systems in the presence of Lipschitz nonlinearities and subject to parametric uncertainties. Following the Lya...

  • Article
  • Open Access
4 Citations
3,198 Views
12 Pages

Pauli Crystals–Interplay of Symmetries

  • Mariusz Gajda,
  • Jan Mostowski,
  • Maciej Pylak,
  • Tomasz Sowiński and
  • Magdalena Załuska-Kotur

16 November 2020

Recently observed Pauli crystals are structures formed by trapped ultracold atoms with the Fermi statistics. Interactions between these atoms are switched off, so their relative positions are determined by joined action of the trapping potential and...

(This article belongs to the Special Issue Symmetries and the Pauli Exclusion Principle)
  • Article
  • Open Access
44 Citations
3,190 Views
15 Pages

A Study on Domination in Vague Incidence Graph and Its Application in Medical Sciences

  • Yongsheng Rao,
  • Saeed Kosari,
  • Zehui Shao,
  • Ruiqi Cai and
  • Liu Xinyue

16 November 2020

Fuzzy graphs (FGs), broadly known as fuzzy incidence graphs (FIGs), have been acknowledged as being an applicable and well-organized tool to epitomize and solve many multifarious real-world problems in which vague data and information are essential....

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
8,057 Views
28 Pages

16 November 2020

The rank-3 antisymmetric tensors which are the magnetic monopoles of SU(N) Yang–Mills gauge theory dynamics, unlike their counterparts in Maxwell’s U(1) electrodynamics, are non-vanishing, and do permit a net flux of Yang–Mills anal...

(This article belongs to the Special Issue Particle Physics and Symmetry)

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Symmetry - ISSN 2073-8994