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  • Open Access

    ARTICLE

    Developmental dynamics between psychological distress and psychological inflexibility in college students: A two-wave cross-lagged panel study

    Yanting Li1,*, Min Hu1, Jin Jiang2, Jiamin Ge3

    Journal of Psychology in Africa, Vol.36, No.2, pp. 293-299, 2026, DOI:10.32604/jpa.2026.073569 - 29 April 2026

    Abstract The present study investigated the longitudinal and reciprocal associations between psychological distress and psychological inflexibility among college students. A total of 391 participants (77.2% male; age = 20.31, SD = 0.90) were recruited through cluster sampling, completed the DASS-21 (21-item Depression Anxiety Stress Scale) and AAQ-II (Acceptance and Action Questionnaire–II) at two time points (T1: March 2024; T2: October 2024). After establishing longitudinal measurement invariance, a cross-lagged panel model was estimated while controlling for gender and age. Results from cross-lagged panel modeling (CLPM) revealed significant concurrent correlations between psychological distress and psychological inflexibility at both time… More >

  • Open Access

    ARTICLE

    Numerical Investigation on Collapse Dynamics of Near-Wall Bubbles under Elliptical Surface Boundaries Conditions

    Jun Yu1,2,*, Lun-Ping Zhang1,2, Xian-Pi Zhang1,3, Teng Xie2,3, Wei-Di Wu1,2, Fang-Zhou Zhu2,3

    CMES-Computer Modeling in Engineering & Sciences, Vol.147, No.1, 2026, DOI:10.32604/cmes.2026.078976 - 27 April 2026

    Abstract Bubble dynamics near complex boundaries is critical for engineering applications like underwater explosions and cavitation control. This study investigates the collapsing behavior of near-wall bubbles adjacent to three boundary conditions (planar, elliptical convex, and elliptical concave surfaces) using a compressible multi-component flow model. The finite volume method combined with fifth-order Weighted Essentially Non-Oscillation (WENO) reconstruction and the Harten-Lax-van Leer Contact (HLLC) Riemann solver is employed for spatial discretization, while the third-order Total Variation Diminishing (TVD) Runge-Kutta scheme handles temporal discretization. Results show that elliptical convex and concave surfaces exhibit opposite regulatory effects: the convex surface More >

  • Open Access

    ARTICLE

    Machine Learning (ML) and Molecular Dynamics–Driven Optimization of VEGFR2 Ligands against Hepatocellular Carcinoma

    Farzana Yasmeen1,#, Abdul Manan1,#,*, Wook Kim1, Sangdun Choi1,2,*

    Oncology Research, Vol.34, No.5, 2026, DOI:10.32604/or.2026.076072 - 22 April 2026

    Abstract Objectives: Vascular endothelial growth factor receptor 2 (VEGFR2) is a critical therapeutic target in hepatocellular carcinoma (HCC) due to its role in angiogenesis and tumor progression. While several inhibitors are currently used, clinical utility is often limited by resistance and adverse effects, necessitating the discovery of novel therapeutic agents. The aim of this study was to identify and characterize novel, highly effective VEGFR2 inhibitors using an integrated computational pipeline to advance the development of new HCC treatments. Methods: A comprehensive dataset from the ChEMBL database was curated and standardized for Quantitative Structure-Activity Relationship (QSAR) modeling.… More > Graphic Abstract

    Machine Learning (ML) and Molecular Dynamics–Driven Optimization of VEGFR2 Ligands against Hepatocellular Carcinoma

  • Open Access

    ARTICLE

    Effect of Intermediate Layer Processed by High-Pressure Torsion on Microstructure Evolution and Nano-Deformation Behavior of Tungsten-Copper Three-Layer Composites

    Xue Wang1,2, Cen Yang1, Yonghang Wang1, Mingming Wang1,3, Ying Chen4, Ping Li1,*

    CMC-Computers, Materials & Continua, Vol.87, No.3, 2026, DOI:10.32604/cmc.2026.077868 - 09 April 2026

    Abstract Tungsten-copper laminated composites are promising materials for high heat-flux applications, but their performance is often limited by interfacial instability caused by the thermal-mechanical mismatch between tungsten and copper. In this study, W/W-30Cu/CuCrZr three-layer composites are fabricated by high-pressure torsion (HPT) processing. Experimental characterization and molecular dynamics (MD) simulations are used to systematically investigate the influence of HPT process parameters and intermediate-layer composition on the evolution of microstructure and mechanical properties. HPT processing significantly refines the grains of the W-xCu composites and enhances their homogeneity. After applying 15 revolutions of HPT on W-30Cu composites, the crystallite… More >

  • Open Access

    ARTICLE

    Numerical and Experimental Investigation of Filament-End Dynamics in Negative-Pressure Pneumatic Transport

    Yisheng Liu*, Xufeng Sun, Zhifeng Chen

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.3, 2026, DOI:10.32604/fdmp.2026.077267 - 31 March 2026

    Abstract This study addresses the optimization of automated yarn handling in textile manufacturing by examining the related suction process through a combined numerical and experimental approach. In particular, a three-dimensional model of the suction nozzle was coupled with an equivalent linear-elastic beam representation of the yarn, and a Fluent–IDW–Abaqus weakly coupled fluid–structure interaction (FSI) framework was employed to capture the yarn’s release and dynamic response under negative-pressure suction. High-speed imaging experiments validated the simulations, demonstrating excellent agreement in displacements and velocities. According to the results, increasing the initial suction pressure from −0.04 MPa to −0.06 MPa More >

  • Open Access

    REVIEW

    Wheel Flow Instabilities and Drag Control in Automotive Aerodynamics: A Comprehensive Review

    Heming Xu1, Haichao Zhou1,*, Wei Zhang1, Wenxuan He1, Lin Bo2

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.3, 2026, DOI:10.32604/fdmp.2026.075610 - 31 March 2026

    Abstract This review addresses four key themes in automotive aerodynamics: flow instability in the wheel region, the aerodynamic characteristics of rims, the aerodynamic behavior of tires, and drag reduction strategies based on flow control around the wheels. The wheel region, comprising the tire, rim, and adjacent aerodynamic components, typically represents the major source of vehicle drag owing to the inherently complex flow generated by wheel rotation, tread geometry, and rim design, which gives rise to flow separation, vortex shedding, and turbulence. Drawing on a broad body of experimental and numerical research, this review elucidates the mechanisms More >

  • Open Access

    ARTICLE

    Reverse Energy Flows in Two-Dimensional Photonic Crystals and Similarities with Vortex Formation and Analogous Flows in Hydrodynamics

    Andrey Pryamikov*

    FDMP-Fluid Dynamics & Materials Processing, Vol.22, No.3, 2026, DOI:10.32604/fdmp.2026.071903 - 31 March 2026

    Abstract This paper examines the connection between photonic band-gap formation in two types of two-dimensional photonic crystals and the emergence of reverse electromagnetic energy flows generated by linearly polarized plane waves incident on a photonic-crystal slab. We show that these reverse energy flows, observed in both transmitted and reflected fields, originate from vortex structures in the Poynting vector. The resulting energy-flow patterns exhibit striking analogies to vortex formation in fluid motion past obstacles. The geometry and dynamics of the Poynting-vector vortices determine whether the incident electromagnetic energy is impeded, leading to the formation of photonic band More > Graphic Abstract

    Reverse Energy Flows in Two-Dimensional Photonic Crystals and Similarities with Vortex Formation and Analogous Flows in Hydrodynamics

  • Open Access

    ARTICLE

    Numerical Simulations of Extreme Deformation Problems in Granular-Dominated Hazard from Indoor to Engineering Geological Scale: A Comparative Study

    Yuxin Tian1, Wangxin Yu1, Wanqing Yuan1, Qingquan Liu1,*, Xiaoliang Wang1,2,3,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.3, 2026, DOI:10.32604/cmes.2026.078776 - 30 March 2026

    Abstract Granular flow, such as hopper discharge and debris flows, involves complex multi-scale, multi-phase, and multi-physics coupling, posing significant challenges for numerical simulation. Over the past two decades, methods like the Discrete Element Method (DEM), Smoothed Particle Hydrodynamics (SPH), and Depth-Averaging Method (DAM), have been developed to address these problems. However, their applicability across different scales remains unclear due to differences in physical assumptions and numerical algorithms. Therefore, a comprehensive evaluation is critically needed. This study selects three typical methods (DEM, SPH, and DAM) to examine their convergence behavior, boundary condition implementation, and limitations in physical More >

  • Open Access

    ARTICLE

    Implementation of Hysteretic Models into Mechanical Systems for the Purpose of Digital Twin Modelling to Support the Technical Diagnostics

    Milan Sága, Ján Minárik*, Milan Vaško, Jaroslav Majko

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.3, 2026, DOI:10.32604/cmes.2026.076734 - 30 March 2026

    Abstract The presented study analyses the impact of hysteresis on the response of mechanical systems. The main objective is to determine how the hysteretic models influence the system behaviour and if they can be utilised to describe a damaged or a faulty system. The hysteretic models are able to describe various types of nonlinear behaviour that can reflect the wear or damage of the system components. The data obtained from these models can possibly serve as a basis for the advanced approaches, such as digital twin modelling and predictive maintenance. All the results presented in this… More >

  • Open Access

    ARTICLE

    Modeling of the Separation Bubble on Cambered Airfoils Utilizing Modified Parameters in a Transition Model

    Eren Anıl Sezer1,2,3, Muhammer Ayvazoğlu1,2, Muhammed Hatem1,2, Sinem Keskin1,2, Mustafa Özden1,4, Mustafa Serdar Genç1,3,*, Halil Hakan Açıkel1

    CMES-Computer Modeling in Engineering & Sciences, Vol.146, No.3, 2026, DOI:10.32604/cmes.2026.076446 - 30 March 2026

    Abstract Separation bubbles forming on airfoils significantly influence aerodynamic behavior, particularly at low Reynolds numbers, making their accurate prediction a critical challenge in transition modelling. This study investigates numerical modeling of a separation bubble and the effects of airfoil thickness and camber variation on the formation of the bubble dynamics at low Reynolds numbers. The numerical results were compared with the experimental results obtained from surface pressure distribution measurements, oil flow visualisation, and surface shear measurements to analyse the detailed flow behavior. The combination of pressure and flow visualisation techniques provided complementary insights, enabling a detailed… More >

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