Air Force Engineering University

Thermo‐Mechanical Fatigue, Crack Evolution, and Fracture Reliability of Lightweight High‐Power‐Density Diesel Pistons: A Review

ABSTRACT The higher power density and lightweight design of diesel pistons impose severe thermo‐mechanical demands. This review summarizes research on thermo‐mechanical fatigue, crack evolution, and fracture reliability in lightweight, high‐power‐density pistons. The review exami...

Scalable Multi‐Target Illusion via a Segmented Spatiotemporal Metasurface

ABSTRACT A kaleidoscope converts a few physical fragments into numerous images through repeated mirror reflections, yielding visual scene richer than the objects themselves. This optical phenomenon shows that a perceived scene can be reconstructed by beam redirection and spatial...

Burr formation and influence mechanism analyzing of ultrasonic vibration-assisted micro-milling for 2A21 aluminum U-shaped grooves

Micro-milling is widely applied in aerospace and precision equipment manufacturing due to its excellent material adaptability, capability to machine complex 3D geometries and superior surface quality. Introducing high-frequency ultrasonic vibration further improves machining perf...

OpenTriIDS: Confidence-Guided Open-Set Intrusion Triage for Unknown Attack Detection in IoT Devices

Open-set IoT intrusion detection must distinguish unfamiliar attacks from uncertain known traffic. OpenTriIDS implements a three-action policy: a random forest accepts high-confidence predictions, routes uncertain samples to a compact known-class prototype memory, and rejects rou...

Adversarial Attack via Latent Feature Attribution of Diffusion Models

Traditional adversarial attacks are constrained by \({l_p}\) norm limits, resulting in adversarial examples with high-frequency noise that compromise their imperceptibility. In contrast, attacks using diffusion models without \({l_p}\) norm constraints can generate visually more...

Integrated thermal management of high-power solid-state lasers: heat generation, cooling architectures, interfaces, and thermo-optic performance

Thermal effects critically limit power scaling, beam-quality preservation, and operational stability in high-power solid-state lasers. As heat-flux densities rise, thermal management has moved beyond external cooling enhancement toward coordinated control of heat generation, heat...

Quality Difference Analysis of Raw and Wine‐Processed Polygonati Rhizoma Based on Correlation Between Color and Component

ABSTRACT The dried rhizome of Polygonati Rhizoma, known as Huangjing, is commonly used clinically in both its raw and wine‐processed forms. However, the distinctions in quality between them remain unclear, and the methods for identifying them are considerably intricate. This stud...

Perspective-n-Point Post Optimization for Far-Field Pose Measurement Based on Weighted Central Normalization

Far-field vision-based pose measurement is a crucial technology for applications such as high-resolution Earth observation and space security early warning. However, owing to the perspective imaging model of long-range optical systems, conventional vision-based pose measurement m...

Experimental study on the ignition characteristics of a three-phase electrodes plasma-enhanced swirl combustion

The ability to achieve reliable ignition in aircraft engines under extreme conditions is important for ensuring flight safety. To address this challenge, a novel three-phase electrodes plasma-enhanced combustion technology was proposed. Three-phase rotating gliding arc electrodes...

A review on electromagnetic wave absorber based on spoof surface plasmon polariton metamaterials

Spoof surface plasmon polariton (SSPP) represents an artificial electromagnetic mode that extends the properties of optical-frequency surface plasmon polariton into the microwave and terahertz regions. This capability offers a novel platform for designing high-performance microwa...

A Leakage-Aware Evaluation of a Multi-Scale Attention Temporal Convolutional Network for Binary Network Intrusion Detection

Reliable evaluation is as important as model design in benchmark-based network intrusion detection. This study evaluates a Multi-Scale Attention Temporal Convolutional Network (MS-ATCN) for binary intrusion detection under a leakage-aware and reproducibility-oriented protocol on...

Tumor-intrinsic SIRPα drives anti-PD-1 resistance in esophageal cancer by coordinating proliferative dominance and T-cell exhaustion: A target for combinatorial immunotherapy

Signal regulatory protein alpha (SIRPα) is a novel immune checkpoint protein. However, the role and mechanism of SIRPα in esophageal cancer (ESCA) remain unclear. This study explores the role of tumor intrinsic SIRPα in ESCA. Twenty-one ESCA samples treated or not with anti-progr...

A Learnable Sparse Attention Graph Architecture for Heterogeneous Multi-UAV Air-to-Ground Mission Planning

In the complex problem of air-to-ground mission planning, multi-UAV systems face significant challenges such as system complexity and heterogeneity, insufficient target observability, and difficulties in collaborating information sharing. To address these issues, this paper propo...

Time‐Varying Mosaic Metasurface Architecture Enabling Programmable Multi‐Tone Pseudo‑Doppler Spectral Engineering

ABSTRACT The pseudo‐Doppler effect, an artificial frequency shift produced by time‐varying phase modulation of stationary structures, offers a promising route for electromagnetic (EM) wave manipulation. However, existing time‐modulated metasurfaces are predominantly spatially uni...

Residual strength and failure-mode transitions of loess–steel interface under large-displacement ring shear

Shear behaviour at the loess–steel interface governs load transfer in steel pile foundations and retaining structures in collapsible loess regions. However, the large-displacement behaviour of compacted loess–steel interfaces, particularly the evolution of residual strength and f...

Distributionally Robust Integrated “Decision–Control” Task Assignment for Multiple Unmanned Aerial Systems in Emergency Response Under Stochastic Disturbances

Emergency response missions employing heterogeneous multi-UAVs are challenged by both the tight coupling between task assignment and motion control and the inherent difficulty in obtaining full probability distributions of stochastic disturbances. In practice, only partial moment...

OGSAgent: an MCP-based multi-agent collaboration framework for intelligent GIServices

The vision of intelligent GIServices (Geographic Information Services) is to automatically discover, compose and execute distributed GIServices to address global challenges. Recent studies show that LLM (large language model)-based agents can autonomously use external services, w...

The effect of social support on physical activity of hemodialysis patients : the chain mediating role of exercise self-efficacy and barriers to exercise benefits

Abstract Background Maintenance hemodialysis patients exhibit low physical activity, which is associated with sarcopenia, increased risk of cardiovascular events, and elevated all-cause mortality. Social support is an important resource for promoting healthy behaviors. But the me...