University of Chinese Academy of Sciences

Data Optimization for LLMs: A Survey

Large language models (LLMs) have attracted great attention in both academic and industrial communities in recent years. Numerous survey studies have covered various aspects of LLMs, such as learning strategies, applications, alignment, explainability, and evaluation. However, li...

Nitrogen deposition does not alter the temperate forest soil carbon pool: A 14-y experiment on varied nitrogen fertilization

Soil carbon (C) pools in nitrogen-limited temperate forests are critical to the global C cycle, but there are no long-term experiments examining soil C, with various nitrogen (N) forms. Here, a 14-y experiment (100 kg N ha −1 y −1 ), with added N simulating atmospheric deposition...

Decoupling Carrier Concentration and Mobility in Hot-Extruded n-Type Bismuth Telluride for Enhanced Thermoelectric Performance

Abstract Bi2Te3-based materials have attracted considerable attention due to their excellent thermoelectric performance at room temperature. However, the pulverization process during fabrication tends to introduce the donor-like effect, which significantly increases the carrier c...

Cation‐Framework‐Preserving Oxygen‐Vacancy Engineering for Broadband Infrared Emission in High‐Entropy Spinel Oxides

ABSTRACT High‐temperature radiative ceramics require broadband infrared emission and stable structures, but the defects that enhance emission can also weaken oxide lattices. Here, we regulate oxygen vacancies in (MnCrFeNiCu) 3 O 4 , a high‐entropy spinel oxide (HEO), by vacuum an...

High mobility narrowband-emissive organic semiconductors

This work proposes a synergistic control strategy of molecular packing and transition dipole moment orientation for achieving high mobility narrowband-emissive organic semiconductors.

Soil CH4 and CO2 emissions mediated by water and afforestation in Horqin Sandy Land

Ecological restoration in arid and semi-arid regions plays a vital role in maintaining regional carbon balance under global change. Although water management and vegetation composition regulate soil carbon cycling, their combined effects on greenhouse gas source/sink dynamics in...

Turnkey Soliton Microcombs via Self‐Injection Locking in Dual‐Coupled and Interferometric Microring Systems

ABSTRACT This study systematically investigates, via numerical simulations, the self‐injection locking (SIL) characteristics of dual‐ring coupled cavity systems and interferometric microring systems. For the dual‐ring system, we show that the SIL region on the tuning curve splits...

Execution-Consistent Event-Responsive Truck–UAV Coordination Under Simulated Progressive Road Disruption

Progressively revealed road disruptions can invalidate truck–unmanned aerial vehicle (UAV) relief plans while deliveries and recovery operations are already under way. We develop ER-HLNS-PR, an event-responsive framework that reconciles realized task, vehicle, and material states...

SDFNet: Semantic Driven Frequency-Domain Infrared and Visible Image Fusion Network

Infrared and visible image fusion aims to integrate complementary thermal target information and visible structural details for multimodal perception and remote sensing applications. However, existing deep learning methods often underutilize semantic information during fusion and...

Incorporating Mg into Al-based supports to modulate metal-support interactions for enhanced H2 productivity and selectivity in Ni-catalyzed aqueous-phase reforming

Aqueous-phase reforming (APR) of biomass-derived oxygenates provides a sustainable route for hydrogen production. Owing to their multifunctionality, Ni-based catalysts have been widely studied; however, these catalysts are still limited by methanation side reaction that decreases...

Geochemical responses of mineral powder materials and natural rock cores to H2-water exposure in underground hydrogen storage

Geochemical interactions among H 2 , water, and subsurface minerals may affect the integrity of underground hydrogen storage (UHS). Five mineral-enriched powders and one cement material were exposed to H 2 gas, He-water, and H 2 -water for 30 days at 120 °C and 10 MPa. Sandstone,...

Offensive unpredictability and defensive tracking in intergroup conflict show sex-differentiated patterns

Intergroup conflict poses asymmetric strategic demands: acquiring resources through offense benefits from behavior that opponents cannot easily anticipate, whereas protecting resources through defense requires monitoring opponents and adjusting to threats. Analyzing behavioral da...

Conversion‐Controlled Poly(Ionic Liquid)/Aluminum Nitride Thermal Interface Materials with Internal Plasticization for Reliable Chip‐Level Thermal Management

ABSTRACT The increasing power densities of artificial intelligence and high‐performance computing (HPC) chips place stringent demands on thermal interface materials (TIMs), which are designed to combine efficient heat transport with interfacial conformability, stress relaxation,...

Dendritic computation for abstract rule-based flexible decision-making

Intelligent behavior involves flexible integration of sensory input and abstract rule knowledge. Dendritic computation has been shown to contribute to top-down modulation of sensory processing; however, whether and how it is involved in flexible cognitive processing remains to be...

Molecular evolution of oxygenated organic molecules in a cloud-influenced forested mountain environment

Abstract. Atmospheric oxygenated organic molecules (OOMs) link the oxidation of volatile organic compound to secondary organic aerosol formation, yet their molecular evolution in cloud-influenced forested mountain environments remains poorly constrained. Here, gas-phase OOMs were...

Improved Skills for Predicting Sub‐Seasonal to Seasonal Global Sea Surface Temperature

ABSTRACT Accurate prediction of global sea surface temperature at sub‐seasonal to seasonal (S2S) timescales is critical for drought and flood forecasting, as well as for improving disaster preparedness in human society. Operational physics‐based numerical models are run to predic...

A vision-based docking planning network for robust recovery of autonomous underwater vehicles

Autonomous Underwater Vehicles (AUVs) are core intelligent platforms in fields such as marine resource exploration and offshore engineering operations. Stable underwater autonomous recovery technology is crucial for ensuring the continuous safety and efficient operation of AUVs....

Analysis of Triple-Frequency PPP Ambiguity Resolution with Different Ambiguity Fixing Methods

Accurate ambiguity resolution (AR) is critical for precise point positioning (PPP). Triple-frequency observations enable longer wavelength combinations, improving AR performance. This study evaluates four AR algorithms, Integer Least Squares (ILS), Partial Ambiguity Resolution (P...

Scalable Patterning of Organic Electrochemical Transistors for Logic Gates and Neuromorphic Computing

ABSTRACT Organic electrochemical transistors (OECTs) are promising building blocks for bioelectronics owing to their efficient ion–electron coupling, soft‐material compatibility and high transconductance. However, their large off‐state currents and poor scalability have so far li...

Differences in Dust Emission and Near‐Surface Transport Patterns Among Three Surface Substrate Types

ABSTRACT Soil wind erosion is a major driver of atmospheric dust emissions and land degradation. Many studies have examined dust release from different substrates, but differences in methods and units still limit quantitative understanding of how surface conditions and wind joint...