Shanghai Maritime University

Concentration of injury and fatality harm at repeat-active highway–rail grade crossings: A multi-state permutation and machine learning analysis

Highway–rail grade crossing incidents remain a transportation safety concern, yet prior studies have focused mainly on crash occurrence, severity, and hotspot detection, leaving limited evidence on how injury-or-fatality harm concentrates at crossings with repeated incidents. Usi...

Variation in Speed Distributions with Local Truck Proportion in Mixed Freeway Traffic: A Shapley Decomposition

Variations in the overall speed distribution of mixed freeway traffic may reflect changes in vehicle-type weights, vehicle-type-specific speed distributions, or both. Using the highD vehicle trajectory dataset, we analyzed 50-m × 30-s spatiotemporal cells, with 60-s cells used fo...

Rule-Constrained Hierarchical Fusion Path Planning for Unmanned Surface Vehicles

Path planning for unmanned surface vehicles in dynamic waters requires coordination of global routing, collision avoidance, maneuverability, and maritime encounter rules. This study develops a rule-constrained hierarchical framework to integrate these requirements. The global pla...

UCTE-OGC: Unsupervised contrastive text embedding with ontology-guided graph convolutions for biomedical clustering

BackgroundEfficient organization and retrieval of rapidly growing biomedical literature require representations that capture contextual semantics and explicit biomedical relationships. However, existing methods typically model text and ontology structure separately, producing inc...

SPDiff: a spectral-prior-guided diffusion model for infrared ship image super-resolution

Infrared ship image super-resolution remains challenging because infrared imagery often exhibits sparse texture cues, weak small-target boundaries, and background noise amplification, particularly under large upscaling factors. To address these issues, we propose SPDiff, a spectr...

Assessing Arctic ship navigability: Divergence between international rules and local regulations

Arctic ship navigability is affected by both international rules and local regulatory frameworks. When differences arise between the two frameworks from policy and practical perspectives, issues inevitably arise, yet they remain insufficiently addressed in the existing literature...

Life cycle cost-oriented energy management and configuration co-optimization for fuel cell hybrid ships

Fuel cell hybrid ships (FCHS) face challenges in balancing economic optimization, power allocation, and capacity configuration. This study develops an energy management strategy coupled configuration optimization framework integrating adaptive cut-off frequency and low-pass filte...

Efficient complete coverage path planning for mining vehicles in complex environments via region decomposition and finite-state control

Complete coverage path planning for deep-sea mining vehicles is difficult because large mining areas require coordinated planning across multiple spatial scales, while dense and irregular obstacles can readily induce coverage deadlocks. This paper proposes a three-tier hierarchic...

Accelerated Electrolyte Engineering by Deep Learning: A Quaternary Ammonium Additive Enables Ultra-Stable Zinc Anodes

Abstract Currently, achieving long-cycling zinc anodes for aqueous zinc-ion energy storage devices remains a challenge owing to uncontrolled dendritic growth and concurrent hydrogen evolution reaction (HER). Electrolyte engineering via molecular additives has emerged as an effect...

How incentive mechanisms affect the dynamic internalization of low-carbon behavior? A perspective from carbon inclusion platforms

The carbon inclusion platform, as an important digital tool for promoting public low-carbon lifestyles, guides individuals to engage in low-carbon behavior through mechanisms such as point incentives, behavioral feedback, and social interaction, and plays an increasingly importan...

The WoKaS-Iso database: workflow for a global compilation of oxygen-18 and deuterium records in karst springs and cave drip water for enhanced understanding of karst systems

For analysing karst hydrogeological systems, observations of karst springs and cave drips are considered indispensable. In addition to hydrometric observations, knowing the oxygen and hydrogen stable isotope ratios has improved the understanding of vadose zone and aquifer dynamic...

Mechanical Response of a Macro-Fibre Composite-Bonded Cantilever Beam and Its Sandwich Configuration for Low-Intrusion Deformation Suppression

Macro-fibre composite (MFC) actuators offer improved flexibility and damage tolerance over monolithic piezoceramics, which have been widely utilised recently. However, direct bonding to a heritage substrate of MFC actuators may cause local stress concentration and complicate remo...

A ship trajectory clustering and typical trajectory extraction framework based on Grey Wolf Optimized DBSCAN

Ship trajectory clustering based on the Automatic Identification System (AIS) is important for traffic safety and efficiency. However, current clustering algorithms have major limitations, similarity measures ignore the combined effects of multiple attributes, and trajectory comp...

A Generalized Sylvester Dual Quaternion Matrix Equation With Applications

ABSTRACT Dual quaternions have important applications in fields such as information control, robotics, and hand‐eye calibration. At the same time, matrix equations play a crucial role in system control, particularly the generalized Sylvester matrix equation , which has extensive...

Explainable Machine Learning and Generative AI for SHAP-Guided Modification of Residential Interior Images: Predictive Associations and Algorithm-Derived Spatial-Quality Scores

With the increasing adoption of data-driven methods in architecture and design, the quantitative assessment of residential interior spatial quality and model-informed modification of residential interior images have become increasingly important. This study develops an explainabl...

Unity of Heaven and Humanity: Ecological Philosophy in the Pre-Qin Period

The concept of Unity of Heaven and Humanity (Tian Ren He Yi) constitutes one of the foundational worldviews of Chinese civilization. Emerging from a long agrarian tradition, it reflects an enduring vision of the interconnectedness between human beings and the natural world. This...

A risk-aware multimodal temporal reinforcement learning approach for collision avoidance of unmanned surface vehicles in multi-dynamic-obstacle scenarios

This study addresses autonomous collision avoidance for unmanned surface vehicles in multi-dynamic-obstacle maritime scenarios, where the number of obstacles varies, risk interactions are complex, and dynamic environmental evolution is difficult to exploit effectively. A Risk-Awa...

Stability-Guided Relative Geometry Distillation via Interpolated Pseudo-Views for Sparse-View 3D Gaussian Splatting

Extremely sparse-view 3D Gaussian Splatting (3DGS) often suffers from depth drift, incorrect occlusions, and floating artifacts because supervision is unavailable between training cameras. We propose a stability-guided relative geometry distillation (SG-RGD) framework that extend...

A copula-based poisson-mixed multinomial logit model for joint analysis of vessel incident types and fatality counts: Evidence of tail dependence from commercial fishing data

Commercial fishing remains one of the most hazardous occupations worldwide, with high fatality rates and complex incident dynamics, making the joint understanding of incident type and fatality frequency critically important. This study addresses the limitation of conventional app...

Engineered Antileakage and Low‐Corrosion Composite Phase Change Gels for Enhanced Cold Storage: Toward Sustainable Refrigeration

The substantial energy consumption of conventional cold chain systems presents a significant challenge to global sustainability goals. While phase change materials (PCMs) offer promising thermal regulation solutions, they typically suffer from rigidity, leakage risks, and corrosi...