Changchun University of Science and Technology

BTSR-Net: Boundary–topology guided structural refinement for high-resolution remote sensing image segmentation

Semantic segmentation of high-resolution remote sensing imagery in complex urban scenes often suffers from insufficient modeling of boundary neighborhoods, causing ambiguity near class interfaces and weakening the continuity of elongated structures. To address this issue, we prop...

TF-HyperNet: Sleep apnea detection using dual-stream time–frequency fusion and a soft-margin hyperbox decision head

Sleep apnea (SA) is a prevalent sleep-related breathing disorder that poses a substantial threat to public health. Deep learning-based ECG detection methods hold considerable promise for clinical applications. However, real-world clinical monitoring is complicated by both class i...

Multiscale axial displacement measurement based on radially segmented double-helix PSF and multi-feature hierarchical demodulation

The double-helix point spread function (DH-PSF) inherently suffers from a trade-off between axial range and sensitivity, which limits its use in optical alignment and focal-plane tracking tasks that require both wide-range acquisition and high-precision localization. To overcome...

Mo2C-engineered coconut fiber-derived porous carbon with synergistic adsorption-catalysis interface for lithium-sulfur batteries

To enhance sulfur redox kinetics and cycling durability in Li−S batteries, a Mo 2 C-anchored alkali-activated coconut fiber carbon framework (Mo 2 C/A-CFC) was constructed as an advanced sulfur host. The three-dimensional porous network provides plentiful accessible surface sites...

Dynamic Vacancy Self-stabilization Strategy on Sulfur-Doped Mn3O4 for Efficient and Durable Seawater Electrolysis

Abstract Vacancy engineering can enhance Mn-based electrocatalysts, yet in seawater, vacancies often promote Cl– adsorption, metal leaching, and stability loss. Here, we report a dynamic vacancy self-stabilization strategy for sulfur-modified Mn3O4 (S-Mn3O4-E), in which lattice-s...

Practical reliability-aware temporal state correction for depth-assisted RGB-skeleton action recognition

RGB-D action recognition benefits from skeleton motion, RGB appearance, and depth geometry, yet auxiliary modalities are not equally helpful for every sample. We present a reliability-aware temporal state correction method that treats the skeleton representation as the primary te...

Energy-Transfer Pathways in Nd-Sensitized Er-Rich Nanostructures: The Competition between Cross-Relaxation and Phonon-Assisted Sensitization

Abstract Rare earth-doped upconversion nanomaterials, which convert near-infrared light into visible or ultraviolet light, are widely recognized as having a huge potential application market, which unfortunately is restricted by their obstinate insufficient luminescence efficienc...

Seismic Signal Denoising via RRTO-Optimized VMD Combined with Spectral Kurtosis and Enhanced Wavelet Packet Thresholding

Abstract Seismic signal denoising is a key link to improve the interpretation accuracy of seismic data, especially in the complex noise background, where random noise and coherent noise will seriously interfere with the identification and extraction of effective signals. To this...

Pressure‐Induced Topochemical Reconstruction for Quenchable Metastable ZnIn 2 S 4 With Enhanced Photoelectric Effect for Artificial Synapses Application

ABSTRACT Layered ternary sulfide ZnIn 2 S 4 is an attractive visible‐light semiconductor for photodetection, photocatalysis, and neuromorphic optoelectronics, but its photoelectric output is limited by inefficient carrier separation and sluggish carrier dynamics. Pressure offers...

Domino effect enables dynamic electronic structure evolution for stable and efficient water purification

The purification of water contaminated by persistent organic pollutants remains a critical global challenge, largely due to the intrinsic trade-off between high catalytic activity and long-term stability in advanced oxidation processes. Despite the tremendous potential of single-...

Phase and microstructure stability of BaZr0.1Ce0.7Y0.1Yb0.1O3−δ electrolyte under reducing environment of protonic ceramic cells

The chemical and microstructural stability of proton-conducting electrolyte is crucial for durable operation of protonic ceramic cells (PCCs). In this study, the reduction stability of BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3−δ (BZCYYb) was systematically investigated. At 400-800 °C, wet...

DS-PRNet: lightweight camouflaged object detection with dynamic sparse attention and feature-, attention-, and output-level distillation

Existing camouflaged object detection (COD) models are computationally demanding, which limits their deployment on resource-constrained edge devices. To address this challenge, we propose DS-PRNet, a lightweight COD framework that integrates a Dynamic Sparse Attention (DSA) modul...

Uncertainty-Aware structured decoding for Chinese Braille document transcription

Automatic transcription of braille documents remains challenging in document digitization settings, particularly under real imaging degradations such as uneven embossing, illumination variation, paper texture, skew, blur, and ghosting, which make braille dot presence uncertain an...

Tailoring the Optical Properties of MOCVD Grown InGaAs/InAlGaAs MQWs with GaAs Insertion‑Layer

Abstract InGaAs/InAlGaAs multiple quantum wells (MQWs) are widely adoped as the active region of near‑infrared semiconductor lasers due to their excellent optical performance and broad application prospects. In this work, we systematically investigate the effects of the thickness...

Manufacturing of complex micro metallic structures via discretized voxel-based femtosecond laser-assisted localized electrochemical deposition

Metallic microstructures serve as critical components for advanced applications such as micro-electromechanical systems, aerospace, and flexible electronics. However, their three-dimensional fabrication is hindered by extreme geometric complexity and the inherent difficulty in ac...

Comparison of passive Q-switching and Q-switched mode-locking transition in Nd:MgO:LiNbO3 laser based on cavity length modulation

The transition from passive Q-switching (PQS) to Q-switched mode-locking (QML) in the Nd:MgO:LiNbO 3 laser is systematically investigated. A coupled rate equation model is established by introducing a hyperbolic secant function into the PQS photon density equations. The cavity le...

Catalytic Shunt for Sustainable Photosynthesis of Hydrogen Peroxide from Hypersaline Organic Wastewater

Abstract Photosynthetic hydrogen peroxide (H2O2) production from organic wastewater offers a sustainable alternative to the energy-intensive anthraquinone process, yet it is severely hindered by rapid quenching of reactive precursors by concentrated salts in hypersaline organic w...

Regulating Singlet Oxygen Generation via a Z-Scheme IEF-11/TiO2 Heterojunction for Degradation of Phenolic Pollutants

Abstract Photocatalytic technology has emerged as a promising strategy for the treatment of phenolic contaminants in wastewater. Upon light irradiation, it produces highly reactive oxidative species, which can promote the significant mineralization of pollutants. Herein, Ti-MOF (...

Ligand Engineering Enables Phase Selection and Improved Crystallinity in Metastable Orthorhombic AgInSe2 Nanocrystals

AgInSe2 (AISe) nanocrystals, with their outstanding optoelectronic properties and environmentally friendly, Cd/Pb-free composition, show strong potential for applications in near-infrared luminescence and photovoltaic devices. Herein, metastable orthorhombic AISe nanocrystals wer...

Hyperspectral Classification for Chinese Medicinal Herbs via Multi-Perspective Feature Extraction and Information-Theoretic Fusion

Accurate and efficient classification of the origin of Chinese medicinal herbs is crucial for ensuring their quality, safety, and efficacy. This study takes the Chinese medicinal herb Angelica dahurica as an example for research. Hyperspectral reflectance data, which provides ref...