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Symmetry, Volume 17, Issue 1

January 2025 - 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
5 Citations
3,063 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
1,334 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
1,594 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
5 Citations
1,287 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
1,127 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
1,133 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
1,296 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
1,333 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...

  • Article
  • Open Access
2 Citations
1,786 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...

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Symmetry - ISSN 2073-8994