Xiangtan University

A Bilinear Residual Strength Model for Concrete Subjected to Fatigue Loads Based on Discrete Element Virtual Tests

Abstract Accurate assessment of fatigue residual strength is essential to ensure the safety and reliability of concrete structures given long-term fatigue loads. This study proposes a practical model for predicting concrete’s fatigue residual strength, which differs from conventi...

Temperature-dependent electrical performance of β-Ga2O3 Schottky barrier diodes under 5 MeV proton irradiation

This work examines the effects of 5 MeV proton irradiation at a fluence of 1 × 10 13 cm −2 on the electrical characteristics of β-Ga 2 O 3 Schottky barrier diodes over a temperature range of 25 °C to 100 °C. Current–voltage (I-V), capacitance–voltage (C-V), and deep-level transie...

Interfacial Charge Regulation in Hollow CuFe2O4/Bi4O5Br2 Heterostructures for Ultrasensitive Photoelectrochemical Detection of Oxytetracycline

Abstract Antibiotic residues are increasingly being regarded as the emerging pollutants worthy of attention. Here, a hollow CuFe2O4/Bi4O5Br2 heterostructure was engineered as an aptamer-free photoactive interface for the highly sensitive determination of oxytetracycline. The hier...

RFEA: Reliable Forensic Evidence Aggregation for Deepfake Video Detection

Deepfake video detection can benefit from multiple forensic cues, but the resulting responses are not always equally reliable or directly comparable. Moreover, informative forgery evidence may be concentrated in only part of a video. Consequently, indiscriminate fusion can allow...

Finite-time H ∞ control for singularly perturbed systems subject to finite-frequency specification

This paper investigates the design of a parameter-independent finite-time H∞ controller for singularly perturbed systems to address numerical ill-conditioning and enhance robustness under finite-frequency specifications. By integrating the descriptor-system approach with the gene...

Manganese Dioxide Modified Low-Temperature Pyrolytic Carbon Rich in Oxygen-Containing Functional Groups for Efficient Vanadium Ion Adsorption

Vanadium-bearing wastewater threatens aquatic ecosystems and human health, calling for efficient, low-cost adsorbents. In this study, low-temperature pyrolytic carbon rich in oxygen-containing functional groups is prepared from Camellia oleifera fruit shells (COS) and modified wi...

Mechanical and Sound Absorption Properties of EUG / CIIR Vulcanized With Phenol‐Formaldehyde Resin

ABSTRACT Eucommia ulmoides gum (EUG) was incorporated into chlorinated isobutylene isoprene rubber (CIIR) and vulcanized using phenol‐formaldehyde (PF) resin and/or sulfur to produce EUG/CIIR rubber blend with various EUG contents. The mechanical properties, damping behavior, and...

Enabling temporal transitions: AI adoption and sequential ambidexterity in Chinese SMEs from 2015–2023

With research about sequential ambidexterity suggesting that firms may approximate ambidexterity over time by alternating between periods of exploration and exploitation, this temporal approach provides a feasible solution for SMEs facing resource limitations to manage the tensio...

Adaptive robust sliding predictive control for angle tracking of steer-by-wire system with prescribed performance

A novel prescribed-performance adaptive robust sliding predictive control is proposed for steer-by-wire angle tracking to overcome unconstrained tracking error, severe sliding chattering and weak anti-disturbance capability of traditional methods. A performance function and corre...

Efficient Separation of Disaccharide Isomers Using Ion Mobility Spectrometry by Metal Cation and Anion Assisted Strategy

Abstract The rapid separation and identification of disaccharide isomers pose a significant analytical challenge in fields such as food science and glycobiology. This study developed a fast, simple, and low-cost analytical method based on electrospray ionization ion mobility spec...

The Impact of Carbon Tariffs on the Division of Labor in Global Value Chains

In global climate governance, the implementation of unilateral carbon border adjustment mechanisms is impacting the international trading system. Existing research has largely focused on the macro-level trade and emissions reduction effects of carbon tariffs, with few studies sys...

Are two heads better than one? When and how commitment-focused HR attributions can trigger work engagement

Purpose Drawing on the Conservation of Resources theory, this study investigates how commitment-focused human resource (HR) attributions interact with leader-member exchange (LMX) in predicting work engagement via job crafting. Design/methodology/approach Three complementary stud...

Precursor‐Level Molecular Coupling Enables High‐Fill‐Factor Wide‐Bandgap Perovskite Solar Cells and 29.63% All‐Perovskite Tandems

ABSTRACT Wide‐bandgap (WBG) perovskites with a ∼1.78 eV bandgap are essential for monolithic all‐perovskite tandem cells, yet their efficiency and stability are limited by complex precursor chemistry, uncontrolled crystallization, defect formation, and photoinduced halide segrega...

Mechanism of Multiple Emission in Gold Quantum Boxes and Design Rules for Strong Near-Infrared Luminescence

Abstract Ligand-protected gold nanoclusters (Au NCs) hold great promise for near-infrared photonics and bioimaging, but their low photoluminescence quantum yields (PLQYs) and unclear emission mechanisms have limited the rational design of highly luminescent NCs. Here, we report a...

Programmable Te/MoTe 2 van der Waals Heterojunction for Image Preprocessing and Dynamic Recognition

ABSTRACT Van der Waals materials and their heterostructures offer strong gate tunability, enabling multilevel and polarity‐switchable photoresponse states in programmable photodetectors for in‐sensor encoding and computing. However, current gate‐programmable photodetectors often...

Numerical simulation of the thermo-mechanical behavior of internal combustion engine piston with β-Si₃N₄/La₂Zr₂O₇ thermal barrier coating

In this study, β-Si 3 N 4 /La 2 Zr 2 O 7 (NLZ) thermal barrier coatings (TBCs) were fabricated via atmospheric plasma spraying. The mechanical properties and thermophysical properties of the coatings were experimentally investigated. Furthermore, the thermo-mechanical behavior of...

Emission strategies of conglomerates: pollution emission and transfer mechanisms under energy regulation

Abstract Conglomerates constitute a core component of modern economies and play a pivotal role in resource allocation. Using China’s “Top 1,000” energy conservation program as an exogenous policy shock, this paper employs a difference-in-differences design based on manufacturing...

Stretchable and energy‐efficient neuromorphic devices based on ionic capacitance for robotic tactile recognition

Abstract Neuromorphic devices with learning and memory functions are critical for enabling human‐like tactile perception and interactive control in humanoid robots. However, existing neuromorphic platforms often struggle to reconcile mechanical flexibility with energy efficiency...

Preparation of Cu-Mg-Al-O catalyst for the hydrodeoxygenation of waste plastic PET monomer into p-xylene

More than 400 million tonnes of plastics are produced annually, with PET representing a significant fraction of post-consumer waste. Converting PET-derived monomers into p -xylene (PX) via hydrodeoxygenation (HDO) provides a pathway to both plastic valorization and sustainable ar...

Micro-perforated tower sonic black holes for compact broadband sound absorption

Low-frequency broadband sound absorption remains difficult for compact passive absorbers because reducing structural length generally weakens low-frequency response, whereas adding internal resonators can degrade high-frequency performance. We propose a stepped power-law sonic bl...