Northwestern Polytechnical University

A novel star-shaped honeycomb with broken diagonal symmetry for enhanced tunability of equivalent elastic properties and bandgap characteristics

The design of multifunctional honeycomb structures faces critical challenges due to the inherent trade-off between load-bearing capacity and vibration isolation performance. In this paper, a novel geometrically asymmetric design approach for star-shaped honeycombs is proposed thr...

Distributed joint trajectory optimization for search and relay UAVs under urban NLoS communication constraints

Multi-UAV cooperative search in dense urban environments faces significant challenges due to non-line-of-sight (NLoS) conditions, which substantially degrades both mission efficiency and coordination reliability. To address these challenges, this paper proposes a joint trajectory...

Rigid–Flexible Coupled Si 3 N 4 Nanoribbon Aerogels With Carbon–Ceramic Hot‐Face Armor for Oxidation‐Resistant Thermal Protection Stable to 1600°C in Air

ABSTRACT Reconciling ultralight compliance with ultrahigh‐temperature oxidation resistance under one‐sided heating remains a key challenge for ceramic aerogels in extreme thermal protection systems (TPS). Here we report a spatially programmed rigid–flexible aerogel, locally impre...

Reconstruction of Coal Gangue‐Derived Porous Carbon/Silica‐Alumina for Electromagnetic Wave Absorption

ABSTRACT High‐value utilization of industrial coal gangue (CG) solid waste presents formidable environmental and technical challenges, especially in tailoring charge transport to realize high‐performance electromagnetic wave (EMW) absorption whilst retaining its native structural...

A Dual-Physics-Informed Neural Network with Incremental Learning for Corrosion Fatigue Crack Growth Prediction in Aluminum Alloys

Aluminum alloys used in aircraft structures are susceptible to corrosion fatigue cracking under combined aggressive environments and cyclic loading, threatening structural integrity. Pure data-driven models often fail under distribution shifts, while single-physics-informed neura...

Heteroleptic Dicopper Molecular Design Unlocks Distinct Dual Synergies in Electrocatalytic Hydrodimerization of Dilute Acetylene to 1,3‐Butadiene

Electrocatalytic hydrodimerization of acetylene to 1,3-butadiene is an attractive sustainable route, yet reconciling the disparate kinetic demands of acetylene dimerization and hydrogenation remains challenging, especially in catholyte-free membrane electrode assembly (MEA) syste...

On Damage Degree and Evolution of Mechanical and Electromagnetic Properties for SiC f /Si 3 N 4 Composites in Rain Erosion Process

ABSTRACT This study comprehensively investigates the damage evolution and property degradation of SiC f /Si 3 N 4 composites subjected to high‐speed waterjet impacts simulating rain erosion. The composites are fabricated by CVI using SiC fiber fabric preform with BN interface and...

Ultraviolet‐Induced Band Engineering in Black Phosphorus/Gallium Nitride Heterojunction Toward High‐Performance Broadband Photodetection

ABSTRACT Broadband photodetectors that combine ultraviolet sensitivity with visible and near‐infrared response are important for multispectral optoelectronic sensing. However, the performance of these photodetectors is often limited by weak interfacial carrier separation and inef...

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...

Study on Contact Characteristics of Aeronautical Floating Splines Considering Maneuvering Deformation

Floating involute splines are widely used in aviation power transmission systems for torque transmission. In this study, a finite element model considering the dynamic deformation of a floating involute spline shaft was established to analyze the influence of shaft deformation on...

High-capillarity limit and smoothing effect of large solutions for a multi-dimensional generic non-conservative compressible two-fluid model

Abstract We investigate the global existence and long-time behaviour of large solutions in the high-capillarity regime for a general multidimensional non-conservative compressible two-fluid model with the capillary pressure relation f ( α − ρ − ) = P + − P − . Our main contributi...

The Watchful Eye: Government Accounting Supervision and Its Effects on Supply Chain Finance

ABSTRACT This study investigates the impact of government accounting supervision on the adoption of supply chain finance (SCF) among Chinese listed firms. Using a difference‐in‐differences (DID) approach and a comprehensive dataset spanning 1999 to 2022, we find robust evidence t...

Vibration suppression and surface roughness control in flexible blade polishing: modeling, simulation and optimization

In the flexible polishing process for blisk, tool vibration represents a critical factor governing surface integrity and machining stability. However, comprehensive modeling of the dynamic behavior of flexible polishing tools and its quantitative correlation with the final surfac...

Multidisciplinary Optimization of a Turbofan Engine Integrated with Solid Oxide Fuel Cells Under Mass and Volume Constraints for Civil Low-Carbon Aircraft

Mass and volume penalties associated with fuel cell integration have hindered the manufacturing and integration of hybrid power systems into civil aircraft. To address this issue, a novel scheme, a turbofan engine integrated with solid oxide fuel cells, is proposed in this paper,...

Maxwell’s Displacement Current-Driven Wireless System for Self-Powered Multichannel Sensing and Communication

Abstract Acquiring sensory data from physically isolated environments remains a fundamental challenge for the battery-free Internet of Things (IoT). Herein, we report a self-powered, multichannel wireless sensing and communication system driven by Maxwell’s displacement current f...

Lattice Boltzmann based large eddy simulation of sweeping jet–crossflow interaction under varying skew angles

This study numerically investigates the interaction characteristics of a sweeping jet (SWJ) with a crossflow using the lattice Boltzmann method (LBM) coupled with large eddy simulation. The SWJ is generated by imposing an unsteady phenomenological boundary model and the flow fiel...

Adaptive rocket trajectory optimization via reinforcement learning and FPGA acceleration

This paper presents an integrated framework for reusable rocket trajectory optimization that combines deep reinforcement learning with FPGA-based inference acceleration. The proposed Adaptive Hardware-Accelerated Twin Delayed Deep Deterministic Policy Gradient (AHA-TD3) framework...

Indole-3-propionic acid is an endogenic agonist of hypoxia-inducible factor-1α to protect the heart against hypoxia

Abstract Tryptophan catabolism by the gut microbiota is increasingly recognized as a hub connecting environmental challenges to cardiovascular health. By systematically profiling tryptophan metabolites in humans who had moved from low altitude to an altitude of 4300 m and in mice...

HFEDTI: A DTI Prediction Model Integrating Local–Global Feature Fusion and Weighted Ensemble Learning

Drug–target interaction (DTI) prediction is a critical step in drug discovery, and accurate prediction of potential interactions can significantly accelerate the drug-development process. Although deep-learning approaches have achieved promising performance in DTI prediction, two...

Abalone genomics reveals an ancient asymmetry axis and the multifunctionality of the mantle

Abstract Gastropod diversification represents one of the most spectacular evolutionary radiations, underpinned by a fundamentally asymmetric body plan and diverse pigmentation patterns. To understand the genetic underpinnings of these cardinal traits, we constructed a chromosome-...