Chang'an University

Data‐Driven Vertiport Site Selection: A Two‐Stage Framework With Multi‐Source Urban Data and Scalable Optimization

ABSTRACT Urban Air Mobility (UAM) is increasingly recognized as a promising solution to alleviate urban congestion and improve transportation efficiency, playing a key role in developing sustainable urban infrastructure. A central challenge for UAM deployment is the siting of ver...

Nonlinear controls on nitrogen export across heterogeneous riparian zones in a karst catchment: Insights from an integrated habitat classification framework

Identifying the spatial heterogeneity of riparian zones and its regulatory mechanisms on nitrogen migration is crucial for the prevention and control of non-point source pollution in watersheds. However, the influence of complex habitat characteristics in karst watersheds on nitr...

Operating Analysis and Driving Cycle Construction of Electric Passenger Vehicles Based on Real-World Operational Data

Constructing the driving cycle of pure electric passenger vehicles (PEPVs) can provide a comprehensive understanding of the operational characteristics, thereby offering fundamental support for the continuous improvement of their performance. This study utilized the actual operat...

A CPWB-DEMATEL-Based Risk Assessment Method for AR-Assisted Overhead Crane Inspection

Applying augmented reality (AR) glasses to overhead crane inspection can significantly improve the efficiency and accuracy of inspection operations. However, this technology also introduces new and complex risks stemming from the intricate interactions between people, machines, t...

Analysis of Tonga eruption-induced disturbances in the upper thermosphere based on atmospheric drag accelerations from LEO satellites

Abstract The violent eruption of the Tonga volcano on 15 January 2022 triggered significant disturbances in the atmosphere and ionosphere. However, limited observational capabilities have persistently hindered the characterization of eruption-induced neutral density disturbances...

Lightweight online offline authenticated encryption for secure UAV systems

Abstract Unmanned aerial vehicles (UAVs) are rapidly being used for surveillance, environmental monitoring, disaster response, and intelligent transportation systems. However, protecting their connection remains a significant issue due to open wireless channels, severe energy lim...

The state-led reproductive boundary: Divisions and income disparity in mainland China's paid care work

This study examines how the state and the market shape income divisions among paid care workers in China's domestic service economy. We develop the concept of the state-led reproductive boundary to examine how state intervention, through certification, training, work arrangement,...

Early-Charging Features and Heterogeneous Ensemble Learning for High-Fidelity Lithium-Ion Battery Capacity Estimation

Accuracy capacity estimation in lithium-ion batteries serves as a cornerstone for battery management systems. Although recent data-driven methods have advanced this field, practical applications still face the challenge of reconciling high-quality feature extraction with minimal...

Experimental and numerical assessment of welding residual stress effects in a full-scale plate–truss composite steel girder joint

Welding residual stresses (WRS) are fabrication-induced initial stresses in welded steel joints and may influence local yielding and nonlinear stress redistribution. This study presents an experimental and numerical assessment of the effects of WRS in a full-scale integral lower-...

Modeling behavioral intention to adopt autonomous vehicles: an extended decomposed theory of planned behavior

Abstract Autonomous vehicles (AVs) have the potential to transform future mobility systems, yet their adoption remains limited in many developing and transitional economies. This study extends the Decomposed Theory of Planned Behavior (DTPB) by incorporating Knowledge of Autonomo...

In-situ strain monitoring of concrete columns using multi-layer graphene-filled cementitious sensors

Self-sensing cementitious composites provide a promising solution for real-time structural performance assessment. In this study, 12 steel-reinforced concrete columns and 6 unconfined columns embedded with multi-layer graphene (MLGs) filled cement-based sensors (GCBS) were tested...

Experimental study on flexural behavior of steel-concrete composite girders under salt freeze-thaw cycles

Steel-concrete composite girders in cold regions are highly vulnerable to freeze-thaw cycles and de-icing salt corrosion, which substantially compromise their long-term durability. This study explored the flexural performance degradation of six composite girders with different nu...

Intelligent monitoring method for axial compression response of concrete short columns using embedded CNTs-modified cementitious sensors

Self-sensing cementitious materials, as a new type of structural-functional integrated material, are ideal monitoring materials for structural health monitoring. This study proposes an intelligent monitoring method for axial compression response of concrete short columns using em...

From Discursive Exclusion to Rights Empowerment: Legal Dilemmas and Policy Governance of Youth Intercultural Communication under the SDG Framework

Under the normative framework of United Nations Sustainable Development Goal (SDG) Target 4.7, cultivating global citizenship and ensuring inclusive cultural participation constitute imperative legal commitments for contemporary higher education. However, within the global govern...

Unveiling d-orbital antibonding state regulation and charge transfer mechanism for anchoring and catalytic performance of TM-TaS2 in lithium-sulfur batteries

Lithium-sulfur batteries (LSBs) hold great promise for next-generation high-energy storage due to their high theoretical energy density and low cost. However, the inherent mechanism of the “shuttle effect” caused by soluble polysulfides and the slow kinetics of sulfur conversion...

Hydrochemical Characteristics and Potential Health Risk Assessments of Groundwater Resources in the Yinchuan Plain, China

Groundwater quality is a critical factor constraining the sustainable and healthy development of the economy, particularly in regions with scarce water resources. Given the combined influences of natural processes and human activities, understanding the hydrochemical evolution an...

Local Geometric Perception for Climbing Robots on Double-Deck Steel Truss Bridges Using CAD Hole-Layout Priors and Depth-Derived Geometry

Close-range bridge inspection exposes personnel to risks associated with work at height and in confined spaces. Magnetic climbing robots can reduce this exposure, yet dense fastener groups and unsupported regions beyond truss member edges impose local geometric constraints on rob...

A Semi-Analytical Solution for Interpretation of Hydro-Mechanical Responses of Cylindrical Cavity Expansion in Unsaturated Structural Loess

The cavity expansion solution for loess is absent because the existing elastoplastic models fail to model the sophisticated behaviors of unsaturated loess as a classic axisymmetric boundary-value problem. This paper develops a novel solution for cavity expansion in unsaturated st...

Validation design governs reliability claims in well-log lithology prediction

Abstract Well-log lithology classification supports reservoir identification and sedimentary facies mapping in exploration wells where core data are unavailable. Published studies commonly report row-level validation scores, although field deployment requires generalization to we...

Micro pore structure evolution of a loess-paleosol sequence and its control on macro hydraulic properties

The geo-hydrological and hydro-mechanical properties of loess–paleosol sequences on the Chinese Loess Plateau are critical to groundwater migration, stratigraphic stability, geohazard mitigation, and deep geotechnical engineering. This study investigated samples from a 1–30 m loe...