Changsha University of Science and Technology

Unsteady aerodynamics and underbody flow characteristics of high-speed trains with bogie covers at 400 km/h

Although high-speed train (HST) bogie covers effectively reduce aerodynamic drag, they raise safety concerns due to lift-induced oscillations caused by unsteady underbody flow. This study investigates the effects of various bogie covering structures on aerodynamic load pulsations...

Reconciling strong coordination and anion-reinforced solvation structure enables nonflammable electrolytes for potassium-ion batteries

Nonflammable electrolytes are pivotal for improving the safety of potassium-ion batteries. However, their broad adoption has been hindered by the inadequate electrode compatibility of conventional nonflammable electrolytes, which typically result from strong solvation and excessi...

Intelligent Pavement Recognition and Automated Repair Algorithm Based on LU-Net and DP

Abstract Crack repair has long been a critical task in highway maintenance. With the continuous expansion of the scale of roads under maintenance, traditional manual patching can no longer meet the growing demand. Current mainstream pavement crack repair technologies generally ha...

Enzymatic Characterization of a Novel GH3 β-Glucosidase from Lentilactobacillus buchneri: EDTA-Mediated Enhancement of Thermostability

Background/Objectives: β-Glucosidases from lactic acid bacteria are valuable biocatalysts for carbohydrate conversion, flavour enhancement, and bioactive glycoside biotransformation. Although GH3 family enzymes have been characterized from several Lactobacillus species, no system...

YOLOv11-SR: An Enhanced YOLOv11-Based Framework for Defect Detection in Complex Substation Inspection Images

Accurate detection of explicit faults in substation equipment is critical for intelligent substation inspection. However, practical inspection scenes often involve small objects, blurred boundaries, background clutter, occlusion, and large-scale variations, which significantly ch...

Adaptive Lagrangian Penalty-Enhanced Proximal Policy Optimization for Flexible Job Shop Rescheduling with Worker Workload Constraints Under Concurrent Dynamic Disturbances

When flexible job shop scheduling faces concurrent disturbances such as machine failures and rush orders, worker-centric constraints emphasized under Industry 5.0 must also be satisfied. Existing deep reinforcement learning methods for the Dynamic Flexible Job Shop Scheduling Pro...

Infrared–Visible Multi-Sensor Fusion for UAV Photovoltaic Defect Detection Under Real-World Weak Misalignment

For large-scale photovoltaic plant inspection, UAV-based infrared–visible real-time detection can combine thermal abnormality information with appearance and structural cues. This is useful for improving inspection and maintenance efficiency. However, in real UAV inspection, diff...

Harnessing Metasurfaces for Advanced Optical Metrology

ABSTRACT Optical metrology has played a crucial role in the advancement of science and technology. In optical metrology, the fundamental properties of light are skillfully employed as information carriers, enabling accurate measurement of numerous physical quantities. However, co...

PCA–GPR-Assisted Sequential Bayesian Inversion of Slope Mechanical Parameters from Multi-Stage Deep Horizontal Displacement Monitoring

Reliable mechanical parameters are needed to predict deformation during staged slope excavation, yet deep inclinometer profiles are high-dimensional and repeated numerical inversion is costly. This study integrates principal component analysis, Gaussian process regression (GPR),...

A Parallel‐Computing Based Topology Optimization Method of Bi‐Modulus Material Structures With Large Property Difference

ABSTRACT Engineering materials frequently exhibit considerable disparities between their tensile and compressive moduli. However, there are some difficulties in existing topology optimization methods for material structures with large disparities between their tensile and compres...