Naval University of Engineering

Magnetic Saturation Parameter Identification of Hybrid Excitation Generator Based on Particle Swarm Optimization

Hybrid excitation generators offer high power density and adjustable magnetic field, making them attractive for power generation applications with strict volume and weight constraints. However, under strong field excitation conditions, deep saturation of the iron core leads to a...

Regional Marine Gravity Field Refinement by Integrating Region-Adaptive Fusion and Multi-Relational Graph Residual Learning

Satellite-altimetry-derived marine gravity models often exhibit limited regional adaptability and region-dependent residual errors relative to shipborne observations, particularly in coastal, shelf, and slope areas. This study proposes a regional marine gravity refinement method...

Assessing Embedded Software Contribution Under Data Scarcity: An Improved Grey PCA and GRA Framework

With the intelligent and digital upgrading of modern industrial system operation modes, software, as the core carrier of intelligent system equipment, has shown increasingly prominent application value. The traditional cost-based pricing and evaluation system for system software...

Numerical analysis on hydrodynamic performance of a rim-driven thruster near a free surface

To investigate the hydrodynamic characteristics of a rim-driven thruster (RDT) operating under near-free-surface conditions, numerical simulations of the RDT flow field were conducted using a Computational Fluid Dynamics (CFD) approach. The Reynolds-averaged Navier–Stokes equatio...

AE-DRSN-ABHFA-Based Method for AUV Fault Diagnosis

Reliable fault diagnosis of autonomous underwater vehicles (AUVs) remains challenging because fault-sensitive patterns can be obscured by measurement noise, while several fault categories may exhibit similar responses and ambiguous decision boundaries. To address these issues, th...

Value-Gradient Generalist Design of Muscle–Tendon Parameters for Cross-Terrain Musculoskeletal Locomotion

Compliant muscle–tendon mechanics can improve terrain adaptation in musculoskeletal robots, but heterogeneous terrains impose competing requirements on compliance, propulsion, foot clearance, and support transfer. This paper proposes Value-Gradient Generalist Design (VGGD), a fra...

Animal models of liver failure: from model development to translational therapeutic applications

Liver failure (LF) represents a severe clinical syndrome associated with rapid deterioration of hepatic function, high mortality, and limited therapeutic options. Despite extensive research efforts, the complex pathogenesis of LF remains incompletely understood, and effective the...

FFR-YOLO: A Frequency-Guided Fusion Reconstruction Network for Small-Object Detection in Remote Sensing Images

To address the challenges of small scales, weak features, complex backgrounds, and misalignment in multi-scale fusion for small-object detection in remote sensing images, this study proposes a frequency-guided fusion reconstruction YOLO (FFR-YOLO), an improved YOLOv8 framework. T...

Parameter-Efficient Time–Frequency Temporal Convolution with Log-Percentile Normalization for Underwater Acoustic MAC Protocol Recognition

Passive recognition of medium access control (MAC) protocols allows an underwater acoustic monitoring node to infer channel-access behavior without decoded control headers or cooperation from the observed network. This study evaluates a parameter-efficient time–frequency temporal...

Lithium-ion battery SOH estimation based on degradation physics constraints and cross-attention Transformer-GRU

Accurate estimation of lithium-ion battery state of health (SOH) is essential for battery management systems in safety warning, lifetime management, and energy scheduling. To address the difficulty of simultaneously capturing global feature coupling and local degradation memory w...

Experiment and Analysis of Emergence Based on Gaussian Cloud Model

The cloud model provides a unified mathematical framework for representing both randomness and fuzziness simultaneously, offering an effective mathematical tool for modeling complex systems. This paper focuses on the emergent phenomenon of spontaneous synchronous flashing in fire...

Network‐Structured All Organic Composite for High‐Temperature Capacitive Energy Storage

ABSTRACT High‐temperature dielectric polymers are promising for advanced power electronics and electrical systems but often suffer from thermally activated charge transport and breakdown under harsh operating conditions. Here, we demonstrate that high‐loading low‐molecular‐weight...