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Symmetry, Volume 17, Issue 1

2025 January - 147 articles

Cover Story: This review highlights recent advances in the asymmetric synthesis of chiral γ-valerolactone and 5-methylpyrrolidin-2-one derivatives from levulinic acid. These chiral building blocks, derived from renewable resources, are essential components in the synthesis of enantiomerically pure compounds, playing a pivotal role in the development of pharmaceuticals and biologically active molecules. Emphasis is placed on catalytic methods that enable efficient, selective, and sustainable transformations, providing insights into their potential for green chemistry and drug development. View this paper
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Articles (147)

  • Article
  • Open Access
6 Citations
3,445 Views
26 Pages

20 January 2025

Previous studies on highway_rail grade crossing collisions have primarily focused on identifying factors contributing to the frequency and severity of driver injuries. In recent years, increasing attention has been given to modeling driver injury sev...

  • Article
  • Open Access
3 Citations
1,418 Views
25 Pages

20 January 2025

The purpose of this article is to investigate some tensorial norm inequalities for continuous functions of self-adjoint operators in Hilbert spaces. Our first approach is to develop a gradient descent inequality and some relational properties for con...

  • Article
  • Open Access
2 Citations
1,727 Views
23 Pages

19 January 2025

Financial Risk Management (FRM) is crucial for organizations navigating complex and volatile economic conditions, as it aids in identifying and mitigating potential losses. Conventional FRM approaches are inadequate because they do not incorporate va...

  • Article
  • Open Access
6 Citations
1,357 Views
19 Pages

On Fractional Discrete Memristive Model with Incommensurate Orders: Symmetry, Asymmetry, Hidden Chaos and Control Approaches

  • Hussein Al-Taani,
  • Ma’mon Abu Hammad,
  • Mohammad Abudayah,
  • Louiza Diabi and
  • Adel Ouannas

18 January 2025

Memristives provide a high degree of non-linearity to the model. This property has led to many studies focusing on developing memristive models to provide more non-linearity. This article studies a novel fractional discrete memristive system with inc...

  • Article
  • Open Access
1,220 Views
33 Pages

Prediction of Marine Shaft Centerline Trajectories Using Transformer-Based Models

  • Jialin Han,
  • Qingbo Zhu,
  • Sheng Yang,
  • Wan Xia and
  • Yongjun Yao

18 January 2025

The accurate prediction of marine shaft centerline trajectories is essential for ensuring the operational performance and safety of ships. In this study, we propose a novel Transformer-based model to forecast the lateral and longitudinal displacement...

  • Article
  • Open Access
1,190 Views
22 Pages

18 January 2025

In the digital economy era, information symmetry, transparency, and traceability in food supply chains have increasingly garnered consumer attention. To motivate supply chain members to engage in product traceability, this paper examines the competit...

  • Article
  • Open Access
2 Citations
1,377 Views
19 Pages

Mathematical Models for Coverage with Star Tree Backbone Topology for 5G Millimeter Waves Networks

  • Sergio Cordero,
  • Pablo Adasme,
  • Ali Dehghan Firoozabadi,
  • Renata Lopes Rosa and
  • Demóstenes Zegarra Rodríguez

18 January 2025

This paper proposes mathematical optimization models for solving the network planning problem using millimeter wave technology for 5G wireless communications networks. To this end, it is assumed that a set of users, M={1,,m}, and a set of bas...

  • Article
  • Open Access
1 Citations
1,473 Views
15 Pages

18 January 2025

The present work deals with the computational study of HC3N··HCN··H2C2-, (HC3N)2··H2C2-, and HC3N··(H2C2)2-mixed trimers. The different equilibrium structures of the different low-lying minima o...

  • Feature Paper
  • Article
  • Open Access
2 Citations
1,971 Views
18 Pages

High-Performance Carrier Phase Recovery for Local Local Oscillator Continuous-Variable Quantum Key Distribution

  • Jiayu Ma,
  • Chao Zhou,
  • Dengke Qi,
  • Ziyang Chen,
  • Yongmei Sun,
  • Song Yu and
  • Xiangyu Wang

18 January 2025

Continuous-variable quantum key distribution (CV-QKD) has been increasingly studied, which offers the advantage of compatibility with modern coherent optical communication systems. In contrast to CV-QKD with a transmitting local oscillator, the local...

  • Article
  • Open Access
1 Citations
1,135 Views
18 Pages

On Symmetrically Stochastic System of Fractional Differential Equations and Variational Inequalities

  • Yue Zhang,
  • Lu-Chuan Ceng,
  • Jen-Chih Yao,
  • Yue Zeng,
  • Yun-Yi Huang and
  • Si-Ying Li

17 January 2025

In this work, we are devoted to discussing a system of fractional stochastic differential variational inequalities with Lévy jumps (SFSDVI with Lévy jumps), that comprises both parts, that is, a system of stochastic variational inequali...

  • Article
  • Open Access
2 Citations
956 Views
14 Pages

On the Horizontal Divergence Asymmetry in the Gulf of Mexico

  • Tianshu Zhou,
  • Jin-Han Xie and
  • Dhruv Balwada

17 January 2025

Due to the geostrophic balance, horizontal divergence-free is often assumed when analyzing large-scale oceanic flows. However, the geostrophic balance is a leading-order approximation. We investigate the statistical feature of weak horizontal compres...

  • Article
  • Open Access
4 Citations
2,337 Views
25 Pages

17 January 2025

This paper introduces a novel robust Kalman filter designed to leverage symmetrical properties within the Pearson Type VII-Inverse Wishart (PVIW) distribution, enhancing state estimation accuracy in the presence of time-varying biases and non-station...

  • Article
  • Open Access
1 Citations
1,155 Views
17 Pages

Second-Order Kinematic Invariants for the Design of Compliant Auxetic Symmetrical Structures

  • Marco Cirelli,
  • Matteo Autiero,
  • Luca D’Angelo and
  • Pier Paolo Valentini

17 January 2025

Auxetic structures have great potential in modern engineering, and their design represents an emerging field in industrial applications. The accurate synthesis of the elements of such structures requires multidisciplinary approaches that combine kine...

  • Feature Paper
  • Article
  • Open Access
2 Citations
3,173 Views
33 Pages

17 January 2025

The primary objective of this study is the computation of the matching polynomials of a number of symmetric, semisymmetric, double group graphs, and solids in third and higher dimensions. Such computations of matching polynomials are extremely challe...

  • Article
  • Open Access
3 Citations
1,635 Views
16 Pages

17 January 2025

As an emerging mode of transportation, autonomous vehicles are increasingly attracting widespread attention. To address the issues of the traditional reinforcement learning algorithm, which only considers discrete actions within the system and cannot...

  • Article
  • Open Access
3 Citations
1,592 Views
25 Pages

17 January 2025

This paper introduces a new continuous lifetime model called the Odd Flexible Weibull-Weibull (OFW-W) distribution, which features three parameters. The new model is capable of modeling both symmetric and asymmetric datasets, regardless of whether th...

  • Feature Paper
  • Article
  • Open Access
5 Citations
1,641 Views
34 Pages

17 January 2025

Spatial cognitive ability, a fundamental domain within the human cognitive system, involves the perception, interpretation, and manipulation of spatial environments. This study introduces a new EEG feature extraction algorithm, Normalized Adjusted Pe...

  • Article
  • Open Access
1,109 Views
19 Pages

17 January 2025

Moving bottlenecks, characterized by their high frequency and unpredictability, pose significant challenges to timely response and management, often resulting in road congestion and increased risk of traffic accidents. To address these issues, this p...

  • Article
  • Open Access
2 Citations
2,424 Views
19 Pages

17 January 2025

The objective of this paper was to investigate and design a novel vertical- and horizontal-arm independent suspension system aimed at enhancing the autonomous obstacle-crossing capabilities of unmanned ground platforms in complex, unstructured enviro...

  • Article
  • Open Access
1 Citations
1,097 Views
20 Pages

16 January 2025

In this paper, we present Proinov-type fixed point theorems in the setting of bi-polar metric spaces and fuzzy bi-polar metric spaces. Fuzzy bi-polar metric spaces with symmetric property extend classical metric spaces to address dual structures and...

  • Article
  • Open Access
1,013 Views
13 Pages

16 January 2025

This study analyzed the influence of the mechanical properties of two-step backfill on the stability of mining sites. The study focused on the one-step adhesive backfill of segmented backfill mining in a mine in Shandong Province, where the front wal...

  • Article
  • Open Access
3 Citations
1,053 Views
16 Pages

On Superization of Nonlinear Integrable Dynamical Systems

  • Anatolij K. Prykarpatski,
  • Radosław A. Kycia and
  • Volodymyr M. Dilnyi

15 January 2025

We study an interesting superization problem of integrable nonlinear dynamical systems on functional manifolds. As an example, we considered a quantum many-particle Schrödinger–Davydov model on the axis, whose quasi-classical reduction pro...

  • Review
  • Open Access
6 Citations
1,745 Views
45 Pages

15 January 2025

This review is devoted to summarizing recent developments of the linear sigma model (LSM) in cold and dense two-color QCD (QC2D), in which lattice simulations are straightforwardly applicable thanks to the disappearance of the sign problem. In QC2D,...

  • Article
  • Open Access
3 Citations
1,764 Views
25 Pages

15 January 2025

This paper introduces a kinetic model of crowd evacuation from a bounded domain, integrating social behavior and contagion dynamics. The model describes the spatial movement of individuals in a crowd, taking into account interactions with other peopl...

  • Article
  • Open Access
1 Citations
1,190 Views
35 Pages

15 January 2025

The topological index (TI), sometimes referred to as the connectivity index, is a molecular descriptor calculated based on the molecular graph of a chemical compound. Topological indices (TIs) are numeric parameters of a graph used to characterize it...

  • Article
  • Open Access
1 Citations
1,166 Views
22 Pages

Type-2 Backstepping T-S Fuzzy Bionic Control Based on Niche Symmetry Function

  • Yunli Hao,
  • Maohua Wang,
  • Jian Tang,
  • Ziyue Zhang and
  • Jiangling Xiong

14 January 2025

Niche can reflect the changes in the quality of the ecological environment and the balance of ecological state. The more advanced the ecosystem, the more complex and higher-order nonlinearities and uncertainties that are presented. For such an uncert...

  • Feature Paper
  • Article
  • Open Access
2 Citations
2,185 Views
19 Pages

14 January 2025

Billions of paper Electrocardiograms (ECGs) are recorded annually worldwide, particularly in the Global South. Manual review of this massive dataset is time-consuming and inefficient. Accurate digital reconstruction of these records is essential for...

  • Article
  • Open Access
1 Citations
1,016 Views
25 Pages

14 January 2025

In off-road environments, the lateral rollover stability of articulated unmanned rollers (URs) is critical to ensure operational safety and efficiency. This paper introduces the concept of a rollover energy barrier (REB), a symmetry-based metric that...

  • Article
  • Open Access
883 Views
13 Pages

14 January 2025

This paper concerns the low-frequency symmetric (extensional) motions of a thin elastic layer submerged in a fluid. This problem is less investigated than that for antisymmetric motion corresponding to bending vibrations, partly because the classical...

  • Article
  • Open Access
857 Views
10 Pages

Issues in the Expansion and Contraction of Operators

  • Mukhtarbay Otelbaev,
  • Abdukhali Shynybekov and
  • Karlygash Dosmagulova

14 January 2025

This paper explores fundamental issues in the correct contraction and expansion of operators, with a primary focus on the concept of symmetry within operator theory. Special attention is given to how symmetry influences the behavior of operators, par...

  • Article
  • Open Access
866 Views
16 Pages

Investigating Oscillations in Higher-Order Half-Linear Dynamic Equations on Time Scales

  • Ahmed M. Hassan,
  • Sameh S. Askar,
  • Ahmad M. Alshamrani and
  • Monica Botros

13 January 2025

This study presents novel and generalizable sufficient conditions for determining the oscillatory behavior of solutions to higher-order half-linear neutral delay dynamic equations on time scales. Utilizing the Riccati transformation technique in comb...

  • Article
  • Open Access
1,401 Views
19 Pages

13 January 2025

Graph Neural Network (GNN) is an effective model for processing graph-structured data. Most GNNs are designed to solve homophilic graphs, where all nodes belong to the same category. However, graph data in real-world applications are mostly heterophi...

  • Article
  • Open Access
3 Citations
1,272 Views
19 Pages

Connecting Cities: A Case Study on the Application of Morphological Shortest Paths

  • Jorge L. Perez-Ramos,
  • Selene Ramirez-Rosales,
  • Daniel Canton-Enriquez,
  • Luis A. Diaz Jimenez,
  • Herlindo Hernandez-Ramirez,
  • Ana M. Herrera-Navarro and
  • Hugo Jimenez-Hernandez

13 January 2025

Navigatingdensely connected networks can be complex due to the different connection structures present within a network. No explicit algorithms are designed specifically for this navigation, so heuristic approaches and existing network systems are of...

  • Article
  • Open Access
1 Citations
1,962 Views
21 Pages

13 January 2025

Gaussian process (GP)-based robust optimization is an effective tool in product quality improvement. However, most existing variable selection methods are designed for parametric models and are unsuitable for nonparametric GP models. Additionally, im...

  • Review
  • Open Access
2 Citations
1,212 Views
16 Pages

13 January 2025

We present a survey of outcomes on Ulam stability of functional equations in non-Archimedean normed spaces. We focus mainly on functional equations in several variables (including the Cauchy equation, the Jordan–von Neumann equation, the Jensen...

  • Article
  • Open Access
1 Citations
2,268 Views
21 Pages

A Face Fatigue Detection Model for Edge Information Extraction

  • Ge Wang,
  • Fangqian Xu,
  • Wenjie Sang,
  • Yuteng Gao,
  • Yue Han and
  • Qiang Liu

13 January 2025

In contemporary society, fatigue driving is a major cause of traffic accidents, making accurate and timely detection critical for improving driving safety. In this study, we propose a novel fatigue detection model, CSA-YOLO, designed to enhance the a...

  • Article
  • Open Access
1 Citations
1,167 Views
12 Pages

12 January 2025

The gauge covariance of the quark gap equation is compared for the case of three different quark–gluon vertices: the bare vertex, a Ball–Chiu-like vertex constrained by the corresponding Slavnov–Taylor identity, and a full vertex in...

  • Article
  • Open Access
1 Citations
1,284 Views
47 Pages

12 January 2025

This paper develops a new formalism to treat both infinite and finite exceptional orthogonal polynomial (EOP) sequences as X-orthogonal subsets of X-Jacobi differential polynomial systems (DPSs). The new rational canonical Sturm–Liouville equat...

  • Article
  • Open Access
1 Citations
2,540 Views
12 Pages

Graceful Local Antimagic Labeling of Graphs: A Pattern Analysis Using Python

  • Luqman Alam,
  • Andrea Semaničová-Feňovčíková and
  • Ioan-Lucian Popa

12 January 2025

Graph labeling is the process of assigning labels to vertices and edges under certain conditions. This paper investigates the graceful local antimagic labeling of various graph families, excluding symmetric labelings, using computational experiments...

  • Article
  • Open Access
4 Citations
1,430 Views
22 Pages

12 January 2025

The high penetration of distributed generation (DG) in the distribution system poses a challenge to the protection techniques and strategies of active distribution networks, making it difficult to adapt traditional methods to the fault diagnosis of t...

  • Article
  • Open Access
1 Citations
991 Views
22 Pages

11 January 2025

It is known that a correlation in either the service or interarrival times causes a deterioration in the performance of a queuing system. This study aimed to determine which of the two correlations—in the service times or in the interarrival ti...

  • Article
  • Open Access
1 Citations
1,408 Views
22 Pages

11 January 2025

The optimization of the symmetry of MTDC systems after a contingency is crucial for the stable and economic operation of the MTDC systems. In this paper, a multi-objective optimal control method for the power flow symmetry of MTDC systems for the lar...

  • Article
  • Open Access
8 Citations
3,201 Views
22 Pages

11 January 2025

Control charts are frequently used instruments for process quality monitoring. Another name for the NEEWMA control chart is the new extended exponentially weighted moving average (new extended EWMA) control chart. The lower control limit (LCL) and up...

  • Article
  • Open Access
2 Citations
1,978 Views
23 Pages

11 January 2025

Colorectal cancer is a leading type of cancer worldwide and a major contributor to cancer fatalities, and liver metastasis is the most likely distant metastasis in colorectal cancer patients. Classifying and predicting whether liver metastasis occurs...

  • Article
  • Open Access
6 Citations
851 Views
13 Pages

11 January 2025

In this paper, we generalize the 2 + 1-dimensional Gardner (2DG) equation to three spatial dimensions, i.e., 3 + 1 and 3 + 2 dimensions, and construct the solutions of the Cauchy problems and Lax pairs for the Gardner equation in three spatial dimens...

  • Feature Paper
  • Article
  • Open Access
3 Citations
1,083 Views
20 Pages

10 January 2025

Polyhedral cages (p-cages) describe the geometry of some families of artificial protein cages. We identify the p-cages made out of families of equivalent polygonal faces such that the faces of one family have five neighbors and P1 edges, while those...

  • Article
  • Open Access
971 Views
19 Pages

10 January 2025

In this study, we investigate the Cauchy problem for the Vlasov-Maxwell-Fokker-Planck system near a global Maxwellian in low regularity space. We establish the existence of global mild solutions to the system by employing the energy method, provided...

  • Review
  • Open Access
3 Citations
3,076 Views
24 Pages

10 January 2025

The ability to recognize hidden symmetry in a highly asymmetric world is a key factor in how we view and understand the world around us. Despite the fact that it is an intrinsic property of the natural world, we have an innate ability to find hidden...

  • Article
  • Open Access
1 Citations
2,761 Views
23 Pages

10 January 2025

In recent years, the internet has developed rapidly. With the popularity of social media, uploading and backing up digital images has become the norm. A huge number of digital images are circulating on the internet daily, and issues related to inform...

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Symmetry - ISSN 2073-8994