Hohai University

Spatial Spillover Effects of Drought Disasters on Grain Yields: Evidence from 31 Chinese Provinces

Abstract Drought disasters are the most severe natural disasters affecting China’s grain yields, characterized by prolonged duration and extensive impact. Under the integrity of the ecosystem and the interaction among factors, drought not only directly affects grain yields in the...

Linear blue-light optical inspection for fatigue crack detection in steel bridges

Fatigue cracking is a critical concern for the structural integrity of steel bridges, particularly in enclosed steel box girders characterized by dim illumination, reflective metallic surfaces, and complex background interference. Under such conditions, low crack-to-background co...

A Consecutive Missing-Data Recovery Method for Bridge Health Monitoring Based on an ICEEMDAN-PE-LSTM-Informer Hybrid Model

Accurately reconstructing consecutive missing measurement segments presents a major challenge in bridge structural health monitoring, due to the inherent complexity and non-stationary nature of the collected signals. To address this, a hybrid data recovery framework is developed...

IIGF-Net: An interpretability-driven intensity-geometry fusion framework for shield tunnel leakage segmentation in 3D point clouds

Automated leakage detection from MLS-acquired 3D point clouds is essential for the preventive maintenance of shield tunnels. However, existing deep learning methods must reconcile the use of physically grounded handcrafted descriptors with the opaque representations learned by hi...

Real-time instance segmentation and quantification method for concrete dam cracks based on RCIS-YOLO

To address the high complexity of dam crack monitoring workflows involving detection followed by segmentation and the limitations of unmanned aerial vehicle applications, this article first proposes reparameterized crack instance segmentation YOLO (RCIS-YOLO). This model uses YOL...

Investigation into the transforming mechanism from flash-to-conventional drought in different soil moisture layers in a highly climate-diverse basin

Study region The Indus Basin, a highly diverse climate basin in South Asia. Study focus The transformation from flash drought to conventional drought (FD-CD) poses significant challenges to drought risk and management systems, necessitating a comprehensive assessment of the dynam...

Contrasting wave–surge dynamics under sea-level rise in the northern South China Sea

Typhoon-induced coastal flooding along southeastern China is governed by complex interactions among storm surges, waves, tides, and coastal morphology, while the contribution and response of wave-induced setup to sea-level rise (SLR) remain uncertain. Here, a high-resolution SCHI...

DEM investigation of breakage-induced deformation and mesoscale damage evolution in rockfill under slow cyclic loading

Periodic water-level fluctuations in pumped-storage hydropower stations impose long-term slow cyclic loading on rockfill materials. This study investigates the macroscopic–mesoscopic evolution of rockfill materials under cyclic loading using the discrete element method (DEM). A m...

Adhesion Dynamics of Ulva -Diatom Biofilms on Mortar Surfaces in Dynamic Marine Environments and Their Mechanistic Roles in Substrate Performance Deterioration

Abstract Considering that current research on biocorrosive building materials is predominantly conducted through field exposure in marine environments or static laboratory cultivation, field tests struggle to achieve precise quantification of individual biological species’ effect...

scGEN: Leveraging an Adaptive Weighting Strategy for Challenging Cell Clustering in Single‐Cell RNA‐seq

ABSTRACT Recent advancements in single‐cell RNA sequencing (scRNA‐seq) have greatly enhanced our ability to dissect cellular heterogeneity. However, unsupervised clustering often struggles to identify transitional or developmental boundary cells, as existing methods rely on highl...

Detecting Vulnerabilities in EOSIO Smart Contracts via Joint Static and Dynamic Feature Learning

This paper addresses the security challenges of EOSIO smart contracts, which are deployed in WebAssembly bytecode, frequently targeted by attacks, and inherently difficult to analyze. Existing approaches typically suffer limitations that either rely on symbolic execution with han...

Object Detection in Small-Sample Underwater Sonar Images Using Improved YOLOv11

Underwater object detection in sonar images is challenging because of low image resolution, acoustic noise, seabed clutter, weak target boundaries, substantial target-scale variation, and limited labeled data. To address these challenges, we develop an improved You Only Look Once...

A Comprehensive County-Scale Dataset for Geohazard Risk Assessment of House Construction via Cutting Slope (HCCS)

House construction via cutting slope (HCCS) is an increasingly important driver of geohazards in the granite weathering regions of southeastern China. In these areas, frequent intense rainfall and the rapid growth of self-built rural housing together contribute to recurring lands...

Do government subsidy policies promote the energy transition resilience of enterprises? Empirical evidence from China

Purpose Energy transition resilience (ETR) captures enterprises’ capacity to maintain sustainability during low-carbon transitions. This paper aims to construct a comprehensive ETR evaluation index system and examines how government subsidies affect enterprises’ ETR. Design/metho...

Study on Dynamic Splitting Tensile Damage Characteristics and Damage Stage Identification of Steel Fiber–Reinforced Fly Ash Concrete Based on Acoustic Emission

Abstract This paper investigates the dynamic splitting tensile damage characteristics of steel fiber–reinforced fly ash concrete (SFRFAC) under various steel fiber contents, fly ash replacements, and loading rates. The Brazilian disc splitting tensile test was combined with the a...

Multidimensional Vegetation Drought Response to Meteorological and Soil Moisture Deficits Across the Yellow River Basin

Drought poses substantial threats to terrestrial ecosystems, yet whether vegetation vulnerability patterns systematically diverge between soil moisture and meteorological droughts—and how long-term hydrological adaptation governs ecosystem susceptibility to rare extreme droughts—...

Parameter-efficient fine-tuning of SAM for SAR flood mapping: comparative performance and encoder–decoder representation analysis

Synthetic aperture radar (SAR) enables flood mapping under cloud and adverse weather, but segmentation remains challenging across heterogeneous environments. Deep-learning models can improve flood delineation, yet their dependence on task-specific training data limits transfer ac...

Static–dynamic reloading degradation and brittle-to-ductile failure transition of cyclically pre-damaged sandstone: A multiscale experimental study

Rock masses in underground engineering commonly experience cyclic disturbances induced by blasting, excavation, and seismic loading, which can generate persistent internal damage and strongly affect their subsequent reloading behavior. To clarify the unified mechanism governing t...

Expansion of Freshwater Harmful Cyanobacteria in Brackish Waters: Salt Stress Responses, Toxigenic Dynamics, and Ecological Risks along the Freshwater-to-Marine Continuum

Abstract In recent years, freshwater harmful cyanobacterial blooms (CyanoHABs) and their associated cyanotoxins have been increasingly detected in estuaries and coastal lagoons, indicating that some freshwater taxa can survive in low-to-moderate salinity and may maintain their to...

Modelling of the reaction kinetics and phase evolution of alkali-activated slag–fly ash blends

The reaction process of alkali-activated slag–fly ash (AASF) systems exhibits significant multi-stage characteristics and is governed by the coupled effects of the precursor composition and parameters of the activator. Existing kinetic studies have largely focused on empirical fi...