Results 41 to 50 of about 22,554 (129)
Spatially Downscaling of Future Food Demand for Policy Planning
World Food Policy, Volume 12, Issue 1, May 2026.ABSTRACT Understanding the subnational dynamics of food demand, while accounting for the evolution of the agrifood system at the global level, remains a challenge for designing food policy to ensure food security. To link global agrifood systems with subnational food policy planning, we downscale per capita food demand for 62 food commodities at the ...
Chun Song +3 more
wiley +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The utilization of carbonaceous anodes in electrochemical systems, particularly potassium‐ion batteries (PIBs), remains hindered by sluggish kinetics and modest capacities, which are caused by the intrinsic ion storage mechanisms and constrained interlayer spacings.
HaiSong Chen +7 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2022 由于在包含表情的视频数据集中存在大量与表情特征无关的视频帧，使得模型在训练中学习到大量无关信息，导致识别率大幅下降，因此如何令模型自主地选择视频关键帧成为研究的关键。在已有的视频表情识别方法中，大多没有考虑关键帧和非关键帧对模型训练效果的影响，为此提出了一种基于注意力机制与GhostNet的人脸表情识别（FSAGN）模型。通过自注意力机制与帧选择损失计算不同帧的权重，根据权重自主选择视频序列的关键帧。此外，为减少模型参数、降低模型的训练成本，将传统的特征提取网络替换为训练参数较少的GhostNet网络 ...
ZHUJintai(祝锦泰) +4 more
doaj +1 more source
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT By adding CuO, the worm‐like amorphous phase and atomic clusters were simultaneously introduced, enabling the (Ni40Ti40Cu20)99.9O0.1 alloy micron columns to exhibit a uniform flow strain of over 40% and a strength of over 2.5 GPa during compression.
Huwen Ma +13 more
wiley +1 more source
Fermi Surface Structure Revealed by Quantum Oscillations in Half‐Heusler Semimetal LuAuSn
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The Fermi surface structure in the half‐Heusler semimetallic compound LuAuSn was systematically investigated using quantum oscillation studies of high‐quality single crystals and first‐principles calculations. Clear bulk quantum oscillation signals were observed for multiple complementary physical properties, including magnetization, Hall ...
Yue Lu +12 more
wiley +1 more source
智能科学与技术学报, 2021 面部表情识别是一种直接、有效的情绪识别模式。机器学习可以对图像表情进行形式化表征，但由于缺乏大脑的认知表征能力，在小样本数据集或复杂表情（伪装）数据集上的识别性能并不理想。针对此问题，将机器人工智能的形式化表征与人脑通用智能的情感认知能力结合，提出一种基于脑机协同智能的情绪识别方法。首先，从脑电图信号中提取脑电情感特征，以获取大脑对情绪的认知表征。其次，从情感图像中提取图像的视觉特征，以获取机器对情绪的形式化表征。为了增强机器模型的泛化能力，在特征学习中引入样本间的迁移适配 ...
刘栋军 +4 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Low conductivity, slow ion‐diffusion, and limited reactive sites are common problems in electrocatalysts and electrode materials. In this study, a complex NiTe–CoTe heterojunction with abundant Te vacancies embedded in N, P, and F co‐doped hollow carbon nanorods (NiTe1−x–CoTe1−x/NPFC) was fabricated via a simple ionic liquid‐assisted ...
Mingjie Yi +7 more
wiley +1 more source
Realization of a distributed system detect-bed-IVD system(分布式系统调试器IVD的系统实现)
Zhejiang Daxue xuebao. Lixue ban, 2001 介绍了一个自主式智能车辆AIV系统的分布式系统测试床IVD系统.首先讨论了IVD系统的设计目标，然后在介绍AIV结构的基础上，详细地分析了IVD系统，按实时在线调试和离线重放两种情况进行一一讨论.该系统己在智能车辆AIV系统开发及调试实验中得到应用，实验结果验证了该系统是进行在线实时观察，离线分析问题的强有力的工具.
XUWen-yuan(徐文渊) +1 more
doaj +1 more source
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The Schottky barrier height (SBH), which serves as a pivotal determinant of charge carrier injection efficiency in electronic devices, critically governs electrical behavior at metal/semiconductor interfaces. However, pronounced metal‐induced gap states at metal contact interfaces induce Fermi‐level pinning, which constrains the ...
Xiaofei Liu +10 more
wiley +1 more source
智能科学与技术学报, 2021 近年来，脑电等生理信号由于能客观体现真实情绪已逐渐成为情绪识别研究的热门对象。然而，单模态的脑电信号存在情绪信息特征不完备问题，多模态生理信号存在情绪信息交互不充分问题。针对这些问题，提出基于3D分层卷积的多模态特征融合模型，旨在充分挖掘多模态交互关系，更准确地刻画情感信息。首先分别通过深度可分离卷积网络提取脑电、眼电和肌电3种模态的生理信号的多模态初级情绪特征信息，再对得到的多模态初级情绪特征信息进行3D卷积融合操作，实现两两模态间的局部交互以及所有模态间的全局交互 ...
凌文芬, 陈思含, 彭勇, 孔万增
doaj