National University of Defense Technology

Modulating the Thermodynamics and Kinetics of Psychedelics at Serotonin Receptors via Terahertz Waves

Abstract Precise control over the thermodynamics and kinetics of receptor–ligand interactions is pivotal for manipulating physiological processes and developing targeted therapies. However, conventional pharmacological approaches often lack the spatiotemporal precision required f...

A Survey of Optimal Resource Allocation in Semantic Communications: Technologies, Development Trends, and Applications

As an emerging communication paradigm, semantic communications (SC) focuses on the semantic content of information transmission, aiming to achieve more efficient and accurate information interaction. However, SC requires an in-depth analysis of information semantics and accurate...

Frequency-Guided Cross-Scale Refinement Network for UAV Detection

In recent years, the use of UAVs has become increasingly widespread, and the public safety risks posed by unauthorized UAV flights have become increasingly prominent, creating an urgent need for effective detection and identification of UAV targets. However, such targets are smal...

Inverse-Designed Lithium Niobate Waveguide Crossing with Broadband Operation, Low Loss, and Compact Footprint

Waveguide crossings are fundamental building blocks of high-density photonic integrated circuits and on-chip optical routing systems. However, realizing a high-performance, compact waveguide crossing on a lithium niobate-on-insulator (LNOI) platform remains challenging because co...

Adaptive Knowledge Fusion via Dynamic Stacking for Surrogate-Assisted Transfer Optimization

The integration of transfer learning with surrogate-assisted optimization represents a highly promising paradigm for complex engineering problems. However, it is fundamentally constrained by insufficient cross-domain adaptation and the absence of robust knowledge-fusion technique...

DualGLEAN: Dual Allocation for VLM-Guided Generalized Category Discovery in Remote Sensing Images

Generalized category discovery (GCD) aims to classify known categories while discovering novel ones in unlabeled data, yet existing methods lack mechanisms to correct boundary-ambiguous samples that receive noisy pseudo-labels, as they primarily rely on visual feature learning wi...

Nanostructured Zirconia-Based Aerogels for High-Temperature Thermal Insulation

Abstract Zirconia-based aerogels are lightweight, porous materials made up of interconnected zirconia nanoparticles, forming continuous three-dimensional nanoporous networks. Their high melting point, low density, high porosity, and low thermal conductivity make them promising ca...

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...

Evaluation of Riming in the P3‐2ice Microphysics Scheme: A Case Study of Cold‐Air Outbreak Snowfall in Eastern China

Abstract Using the multi‐frequency radar suite, ground‐based observations, and the Weather Research and Forecasting (WRF) model with the Predicted Particle Properties microphysics scheme with the version of two‐ice category (P3‐2ice), we study the characteristics of a cold‐air ou...

Attention-Level Causal Intervention Framework for Multimodal Fake News Detection

Multimodal fake news detectors may learn biased dependencies from imbalanced event distributions and incidental text–image associations, causing attention to capture dataset-specific patterns rather than reliable discriminative evidence. To address this problem, we propose an Att...

A Global Surface Turbulence Heat Flux Dataset resolving tropical cyclones

Abstract. The Global Surface Turbulence Heat Flux Dataset (GHFD) presents a dataset of surface latent heat flux and sensible heat flux, at spatial resolutions of 0.25°×0.25° and daily available from 1993 to 2023. The GHFD is generated using the IBTrACS, OISST, CCMP, Copernicus Ma...

Heterogeneity in trustworthiness reshapes the spatial evolution of trust

Trust is fundamental to cooperation in social and economic interactions, yet its emergence is difficult to explain when individuals occupy asymmetric roles and differ in trustworthiness. How heterogeneous trustee behaviours interact with their spatial organisation to shape popula...

Experimental and simulation study on the micro-explosion characteristics of ethanol/biodiesel droplets

Biodiesel exhibits superior properties such as high cetane number, high flash point, and high lubricity, which enhance its ignition, storage, and usage characteristics. However, its high density and viscosity can impede fuel atomization. This issue can be effectively mitigated by...

TAPO: Task-Decoupled Alignment and Pseudo-Label Optimization for Cross-Scene Inshore SAR Ship Detection

In complex inshore regions, ships are often densely berthed and arbitrarily oriented, while docks, shorelines, coastal facilities, and strong scatterers produce substantial background clutter and target-like scattering responses, leading to foreground-background confusion and loc...

Reconfigurable terahertz spatial differentiation via incident angle tuned beam shifts on a Bi2Te3 platform

Optical spatial differentiation offers an ultrafast, low-power route to edge detection by directly processing the optical field and can address the inherent diffraction-limited blurring of terahertz (THz) imaging. However, existing THz edge detection schemes face persistent bottl...

FuseCLIP: Semantic-Guided Multidomain Fusion for Few-Shot Radar Active Jamming Recognition

Radar active jamming recognition is an essential component of radar anti-jamming processing and cognitive radar decision making. As jamming categories proliferate and electromagnetic environments become more complex, collecting sufficient labeled samples for every possible jammin...

Response of Mesospheric Temperature and Water Vapor to Volcanic Activity

Stratospheric sulfate aerosol loading from volcanic eruptions conventionally perturbs planetary radiation budgets, inducing either global-scale cooling or regional thermal anomalies. The January 2022 eruption of Hunga Tonga–Hunga Ha’apai constituted a pronounced departure from th...

Six-fold reduction in ocean heat content estimate uncertainty since 1960

Abstract Ocean heat content (OHC) dominates Earth’s energy imbalance, but its uncertainty has not been fully understood. Here, we construct a Large-Ensemble to comprehensively quantify the OHC uncertainty from global to regional scales since 1955, and consider eight groups of err...

MENAP: multimodal efficiency-constrained news-augmented asset pricing via cost-aware preference optimization

Abstract Multimodal financial signals spanning textual news, market/macro factors, and auxiliary metadata—offer complementary views of investor attention and risk, but exploiting them at scale increasingly relies on large language model (LLM) agents whose multi-step reasoning and...

Dissymmetrical planar gratings enabled actively chiral perfect absorber

Chiral perfect absorbers (CPAs) can completely absorb one kind of circularly-polarized light while reflecting the other, and have potential applications in fields such as chiral Fabry–Pérot cavity, chiral light emission, and chiral biosensors. In this work, we present a high-perf...