Hunan University of Technology

Digital twin-driven cross-domain damage identification for experimental cable-stayed bridge models under sparse sensing

Reliable damage identification is paramount to structural integrity and operational safety of infrastructure. However, conventional structural health monitoring (SHM) methods often encounter implementation bottlenecks, primarily constrained by data labeling and the inherent discr...

Permanent magnet synchronous motor parameter identification considering nonlinearities based on harmonic suppression and an improved black-winged kite algorithm

Aiming at the loss of accuracy and stability in permanent magnet synchronous motor (PMSM) parameter identification under voltage source inverter (VSI) nonlinearities, this study develops an improved black-winged kite algorithm with PIR harmonic suppression. First, a PIR controlle...

Experimental inversion of the convective heat transfer coefficient of a vertical chord grid wire under transverse airflow

Wet chord grids have potential for dust removal, cooling, and condensation dehumidification of hot, humid mine return air, but their coupled models require a dry-wire gas-side baseline. This study applies a four-terminal electrothermal inversion protocol—constant-current Joule he...

Breaking the Quality–Throughput Trade-Off: A Chaotic Microreactor Enabling Continuous Synthesis of High-Performance High-Entropy Prussian Blue Analogues

Abstract High-entropy Prussian blue analogues (HE-PBAs) for sodium-ion batteries face a quality–throughput trade-off: slow batch addition suppresses [Fe(CN)6]4– vacancies, whereas faster feeding increases defects and water. We develop a continuous recirculation chaotic microreact...

Delay-Dependent Stability Criteria for Networked Microgrid Load Frequency Control Systems via Variable-Augmented Free-Weighting Matrices

This paper investigates the delay-dependent stability problem of cyber–physical microgrid load frequency control (LFC) systems subject to time-varying communication delays. In the considered microgrid framework, renewable energy sources, hybrid energy storage units and the microg...

Identifying ecological security patterns across Nanshan National Park and its adjacent counties via an integrated XGBoost-MCR framework

National parks anchor biodiversity conservation, but ecological connectivity in mountainous regions also depends on surrounding county landscapes, where land-use change, transport infrastructure, and landscape fragmentation may constrain cross-boundary ecological processes. Exist...

Intelligent sensor-based fault diagnosis and tool wear prediction for CNC milling using hybrid machine learning

Abstract Computer Numerical Control (CNC) machining plays a crucial role in modern manufacturing, where the condition of cutting tools directly affects product quality, production efficiency, and maintenance costs. Accurate monitoring of tool wear and fault conditions is therefor...

Catalytic Network states Govern Programmable Analytical Functions in a Multifunctional Nanozyme

Abstract Although multifunctional nanozymes enable diverse analytical applications, existing activity-based models cannot adequately explain how a single nanozyme is programmably reconfigured to perform distinct analytical functions under different reaction conditions. Here, we s...

Sandwiched thermal management system combining topology-optimized liquid channels and phase-change materials for cylindrical Li-ion batteries

To address lithium-ion battery thermal management challenges under extreme high-rate discharging (5C constant-current, initial ambient temperature of 298.15 K), this study proposes a sandwiched 3D composite system. It integrates a topology-optimized cold plate with phase change m...

Flood shelter identification using a mechanics-based approach and triangular fuzzy analytical hierarchy process

Flood events continue to cause substantial damage to people, infrastructure and communities. Effective evacuation planning is essential, and the identification of safe shelters is a key element in protecting people and property. Shelter selection depends on a reliable flood risk...

Mitochondrial Remodeling, Cytoskeletal Dynamics, and Translational Control During Drosophila Spermatid Elongation: An Integrative Review

Spermatogenesis in Drosophila melanogaster is a classical model for studying cell polarity establishment, organelle remodeling, and extreme cellular morphogenesis. Spermatid elongation involves a series of highly coordinated dynamic events, including nuclear polarization, axonema...

Observation of Highly Efficient Electric-Quadrupole Second Harmonic Generation in a Dirac Semimetal

Abstract Topological semimetals hold great promise for nonlinear optics (NLO). It is challenging to probe tilted Dirac fermion-driven intrinsic second harmonic generation (SHG) and topological band structure modulation of second-order nonlinearity in spatial inversion and time-re...

Optimal standardized ileal digestible lysine levels in low-protein diets: Effects on performance of lactating sows and their offspring.

> 0.05). A nonlinear fitting of sensitive indicators with linear and quadratic effects was conducted to estimate optimal SID Lys requirements for lactating sow. Breakpoints for 14 d SUN, maximizing piglet benefits (weaning litter weight and individual weight), and sow BW loss wer...

Multifunctional Double-Network Hydrogel Synergistically Enhanced by Zirconium Ions and Carbon Quantum Dots

Abstract Inspired by the intuitive and efficient information-sensing capability of colorimetric changes, this work presents a design strategy that integrates fluorescent carbon quantum dots (CDs) with metal ion coordination to simultaneously enhance mechanical robustness and mult...

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...