Nanchang Hangkong University

A space-time boundary mapped collocation method based on tensor decomposition with adaptive temporal discretization for dynamic analyses of fluid-saturated porous media

A space-time boundary mapped collocation method, incorporating tensor decomposition and adaptive temporal discretization, is proposed for dynamic analysis of fluid-saturated porous media under moving loads. In this method, the time domain is treated as an additional spatial dimen...

Sb3+-Sensitized Self-Trapped Exciton Emission and Energy Transfer for Tunable Tricolor and Near-White Luminescence in Cs2NaScCl6 Double Perovskite Microcrystals

Abstract Metal-ion doping in lead-free double perovskites is an effective strategy for tailoring lattice structures and enhancing photoluminescence. Herein, Sb3+/Mn2+/Tb3+ codoped Cs2NaScCl6 microcrystals with tunable blue-green-red tricolor emission were synthesized via a solvot...

Variable-Dimension Differential Evolution for Ring-Count-Optimized Sparse Concentric Ring Array Synthesis

This communication proposes a variable-dimension differential evolution (VDDE) algorithm for synthesizing uniform amplitude sparse concentric ring arrays (CRAs) with minimized peak sidelobe level (PSL). Different from conventional fixed-ring-count methods, the VDDE simultaneously...

Hybrid hypergraph networks for multimodal sequence data classification

Abstract Modeling temporal multimodal data requires both long-range temporal dependencies and cross-modal interactions to be represented. Existing approaches commonly model each modality separately and then apply shallow fusion, which can limit the representation of higher-order...

Sub-4 nm Pt5Sm Intermetallic Catalyst toward Efficient and Durable Oxygen Reduction for Fuel Cell Applications

Abstract It is remarkably attractive but challenging to develop fine Pt–rare-earth intermetallic catalysts toward efficient and stable oxygen reduction reaction (ORR) for fuel cell applications. In this work, an amino-assisted method was employed to prepare the carbon-supported P...

Non-contact optical coherence elastography with motion-artifact correction and curvature compensation for quantitative assessment of in vivo keratoconus biomechanics

Keratoconus (KC) is a progressive ectatic disorder in which stromal thinning and apical protrusion culminate in marked biomechanical decompensation of the cornea. Quantifying these changes in vivo is essential for early detection, monitoring of disease progression, and assessment...

Integrating dilated reparameterization with lightweight multi head self-attention for iris segmentation and liveness detection

In response to the multiple challenges in iris segmentation and liveness detection tasks: First, existing research predominantly relies on classical convolutional neural networks and Transformer architectures, causing the propagation of their limitations in local-global focus dyn...

Transition from a fund-based to a lifecycle-oriented EPR system: the evolution of extended producer responsibility for electrical and electronic equipment in China

Abstract The Extended Producer Responsibility (EPR) system for electrical and electronic equipment in China has evolved from a “fund-based” to a “special fund” model. To transcend conventional end-of-pipe governance, we propose an “EPR 3.0” framework that extends environmental re...

Localized and delayed response of mold temperature to cooling channel activation in low-pressure die casting of aluminum alloy wheels

Low-pressure die-casting is the main forming method for aluminum alloy wheels, and the response characteristics of permanent mold temperature to the activation and deactivation of cooling channels are an important basis for the design and control of the cooling system in the low-...

Optimal Decay Rate for a Degenerate Hyperbolic-Parabolic Coupled System

Abstract. We investigate the long-time asymptotic behavior of a one-dimensional degenerate hyperbolic-parabolic coupled PDE system modeling diffusion-wave interactions with degeneracy at the interface. The system consists of a degenerate heat-wave equation on a finite interval, w...

Design and Compression Failure Mechanisms of Stiffener–Skin Integrated CFRP Stiffened Panel

ABSTRACT Traditional cobonded CFRP stiffened panels are susceptible to premature stiffener–skin debonding under axial compression. This behavior is mainly caused by discontinuous load transfer across adhesive interfaces, leading to interface‐dominated failure. To investigate the...

Breaking the barrier: exercise preferences and motivational factors in stressed Chinese secondary school students

This study explores the motivations, barriers, and exercise preferences among Chinese secondary school students experiencing psychological stress. Semi-structured interviews were conducted with 29 adolescent students, and a deductive analysis was employed to identify key themes r...

Semantic-Aware Resource Allocation for Infrared Small-Target Detection in UAV Communication Systems

In resource-constrained unmanned aerial vehicle (UAV) infrared image transmission, infrared small targets usually occupy only a small number of pixels, while conventional uniform resource allocation strategies fail to consider the semantic differences among image regions, resulti...

Squeezing Enhanced Two Phase Estimation With N Particle W States

ABSTRACT Simultaneous estimation of two optical phases in a three‐mode interferometer assisted by optical parametric amplification (OPA) is investigated. The normally ordered characteristic function formalism is employed to derive analytical expressions for all photon number mome...

Multiscale synergistic design for enhanced energy storage performance in Bi 0.5 Na 0.5 TiO 3 -based lead-free dielectrics under various electric fields

Abstract Dielectric capacitors have been recognized as promising devices for advanced pulse power systems due to their high-power density and fast charge-discharge rates. The dielectrics must simultaneously achieve large energy storage density and high efficiency to support the r...