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Understanding the local structure and thermophysical behavior of Mg-La liquid alloys via machine learning potential

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 439-449页

作者： Jia Zhao Taixi feng Guimin Lu National Engineering Research Center for Integrated Utilization of Salt Lake Resource East China University of Science and TechnologyShanghai 200237China Joint International Laboratory for Potassium and Lithium Strategic Resources East China University of Science and TechnologyShanghai 200237China

The local structure and thermophysical behavior of Mg-La liquid alloys were in-depth understood using deep potential molecular dynamic(DPMD) simulation driven via machine learning to promote the development of Mg-La alloys. The robustness of the trained deep potential(DP) model was thoroughly evaluated through several aspects, including root-mean-square errors(RMSEs), energy and force data, and structural information comparison results;the results indicate the carefully trained DP model is reliable. The component and temperature dependence of the local structure in the Mg-La liquid alloy was analyzed. The effect of Mg content in the system on the first coordination shell of the atomic pairs is the same as that of temperature. The pre-peak demonstrated in the structure factor indicates the presence of a medium-range ordered structure in the Mg-La liquid alloy, which is particularly pronounced in the 80at% Mg system and disappears at elevated temperatures. The density, self-diffusion coefficient, and shear viscosity for the Mg-La liquid alloy were predicted via DPMD simulation, the evolution patterns with Mg content and temperature were subsequently discussed, and a database was established accordingly. Finally, the mixing enthalpy and elemental activity of the Mg-La liquid alloy at 1200 K were reliably evaluated,which provides new guidance for related studies.

关键词： magnesium-lanthanum liquid alloys local structure macroscopic properties thermodynamic behavior deep potential mo-lecular dynamic simulation

Deep reinforcement learning in fluid mechanics:A promising method for both active flow control and shape optimization

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Journal of Hydrodynamics 2020年第2期32卷 234-246页

作者： Jean Rabault feng Ren wei Zhang hui Tang hui Xu Department of Mathematics University of OsloOsloNorway Research Center of Fluid Structure Interactions Department of Mechanical Engineering Hong Kong Polytechnical UniversityHong KongChina Science and Technology on Water Jet Propulsion Laboratory Marine Design and Research Institute of ChinaShanghai200011China School of Aeronautic and Astronautic Shanghai Jiao Tong UniversityShanghai200011China Department of Aeronautics Imperial College LondonLondonUK

In recent years,artificial neural networks(ANNs)and deep learning have become increasingly popular across a wide range of scientific and technical fields,including fluid *** it will take time to fully grasp the potentialities as well as the limitations of these methods,evidence is starting to accumulate that point to their potential in helping solve problems for which no theoretically optimal solution method is *** is particularly true in fluid mechanics,where problems involving optimal control and optimal design are ***,such problems are famously difficult to solve effectively with traditional methods due to the combination of non linearity,non convexity,and high dimensionality they *** contrast,deep reinforcement learning(DRL),a method of optimization based on teaching empirical strategies to an ANN through trial and error,is well adapted to solving such *** this short review,we offer an insight into the current state of the art of the use of DRL within fluid mechanics,focusing on control and optimal design problems.

关键词： Machine learning deep reinforcement learning(DRL) flow control

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温度环境下机载设备的按键开关检测方法研究

自动化应用 2014年第7期 74-77页

作者：惠渭锋察应坤李恒毅中航工业飞行自动控制研究所西安710065

为了对在封闭温箱中带按键开关的机载设备进行自动按压及拨动等测试,开发基于直角坐标机械手的测试控制系统。该系统通过PC104模块控制3轴运动控制器对3个步进电机进行操作,进而控制执行机构完成对按键及开关的各种操作动作。

关键词：控制显示部件直角坐标机械手按键开关

Ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

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Journal of Energy Chemistry 2025年第1期100卷 317-326页

作者： Binglu Deng Jie Shen Jinxing Lu Chuqiang Huang Zhuoyuan Chen feng Peng Yunpeng Liu School of Materials Science and Hydrogen Energy Foshan University School of Chemistry and Chemical Engineering Guangzhou University Guangdong Key Laboratory for Hydrogen Energy Technologies

Seawater electrolysis is a promising approach for sustainable energy without relying on precious ***,the large-scale seawater electrolysis is hindered by low catalytic efficiency and severe anode corrosion caused by the harmful *** contrast to the oxygen evolution reaction （OER）and chlorin ion oxidation reaction （ClOR）,glycerol oxidation reaction （GOR） is more thermodynamically and kinetically favorable ***,a Ru doping cobalt phosphide （Ru-CoP2） is proposed as a robust bifunctional electrocatalyst for seawater electrolysis and GOR,for the concurrent productions of hydrogen and value-added *** in situ and ex situ characterization analyses demonstrated that Ru doping featured in the dynamic reconstruction process from Ru-CoP2to Ru-CoOOH,accounting for the superior GOR *** coupling GOR with hydrogen evolution was realized by employing Ru-CoP2as both anode and cathode,requiring only a low voltage of 1.43 V at 100 mA cm-2,which was 250 m V lower than that in alkaline *** work guides the design of bifunctional electrocatalysts for energy-efficient seawater electrolysis coupled with biomass resource upcycling.

关键词： Anodes

A Cross Attention Transformer-Mixed Feedback Video Recommendation Algorithm Based on DIEN

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Computers, Materials & Continua 2025年第1期82卷 977-996页

作者： Jianwei Zhang Zhishang Zhao Zengyu Cai Yuan feng Liang Zhu Yahui Sun College of Software Engineering Zhengzhou University of Light IndustryZhengzhou450000China Faculty of Information Engineering Xuchang Vocational Technical CollegeXuchang461000China College of Computer Science and Technology Zhengzhou University of Light IndustryZhengzhou450000China College of Electronics and Information Zhengzhou University of Light IndustryZhengzhou450000China

The rapid development of short video platforms poses new challenges for traditional recommendation *** systems typically depend on two types of user behavior feedback to construct user interest profiles:explicit feedback(interactive behavior),which significantly influences users’short-term interests,and implicit feedback(viewing time),which substantially affects their long-term ***,the previous model fails to distinguish between these two feedback methods,leading it to predict only the overall preferences of users based on extensive historical behavior ***,it cannot differentiate between users’long-term and shortterm interests,resulting in low accuracy in describing users’interest states and predicting the evolution of their *** paper introduces a video recommendationmodel calledCAT-MFRec(CrossAttention Transformer-Mixed Feedback Recommendation)designed to differentiate between explicit and implicit user feedback within the DIEN(Deep Interest Evolution Network)*** study emphasizes the separate learning of the two types of behavioral feedback,effectively integrating them through the cross-attention ***,it leverages the long sequence dependence capabilities of Transformer technology to accurately construct user interest profiles and predict the evolution of user *** results indicate that CAT-MF Rec significantly outperforms existing recommendation methods across various performance *** advancement offers new theoretical and practical insights for the development of video recommendations,particularly in addressing complex and dynamic user behavior patterns.

关键词： Video recommendation user interest cross-attention transformer

跨越新生适应障碍:中国大学入学教育的运行机制及其成效

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华东师范大学学报（教育科学版） 2025年第1期43卷 49-66页

作者：鲍威何元皓何峰厦门大学高等教育发展中心厦门361005 厦门大学教育研究院厦门361005 北京大学教育经济研究所北京100871 北京大学未来教育管理研究中心北京100871 北京大学研究生院北京100871

入学教育是帮助新生适应大学环境、形成自我与社会认知、充分融入大学生活的重要桥梁。鉴于我国大学新生普遍存在学术性、社会性双重适应障碍,在通过国际比较清晰认识中国入学教育运行机制特征的基础上,利用全国大一学生调查数据,科学... 详细信息

入学教育是帮助新生适应大学环境、形成自我与社会认知、充分融入大学生活的重要桥梁。鉴于我国大学新生普遍存在学术性、社会性双重适应障碍,在通过国际比较清晰认识中国入学教育运行机制特征的基础上,利用全国大一学生调查数据,科学评估入学教育在缓减新生适应障碍中的干预成效。研究表明,采用长期深度教育形式,传递专业学科认知、学习方法习得、心理健康建设3大教育内容向度的入学教育运行机制,对缓减学生学术性、社会性双重适应障碍具有积极效用。囿于精准化帮扶举措欠缺,入学教育对弱势学生的补偿效应有待加强。结论为完善大学入学教育、保障人才培养质量提供科学启示。

关键词：入学教育大学新生学术性适应社会性适应

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C-RAN技术在网络优化中的应用

通信电源技术 2018年第10期35卷 181-182,184页

作者：赵志民卫慧锋朱文豪中国移动通信集团广西有限公司无线优化中心广西南宁530023 中通服建设有限公司广西分公司广西南宁530023

随着LTE用户数和流量的不断增长,网络容量需求不断增加。然而,不断增加基站会导致网络的CAPEX/OPEX逐年增高,无线接入网络的机房、无线设备、传输设备、后备电源以及空调等设备冗余浪费和能源消耗问题变得日益严重。因此,必须考虑新的... 详细信息

随着LTE用户数和流量的不断增长,网络容量需求不断增加。然而,不断增加基站会导致网络的CAPEX/OPEX逐年增高,无线接入网络的机房、无线设备、传输设备、后备电源以及空调等设备冗余浪费和能源消耗问题变得日益严重。因此,必须考虑新的无线接入网络构架以适应新的环境,并满足营收和未来移动互联网业务同步发展的要求。C-RAN通过减少基站机房数量和能耗,采用协作化、虚拟化技术,实现资源协作,提高频谱效率,达到了低成本、高带宽和灵活度的运营方式。

关键词： C—RAN 载波聚合(CA) CoMP 吞吐率

Enhancing oxygen reduction reaction of Pt-Co/C nanocatalysts via synergetic effect between Pt and Co prepared by one-pot synthesis

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Rare Metals 2023年第1期42卷 146-154页

作者： Yun-feng Wu Ji-wei Ma Yun-hui Huang School of Materials Science and Engineering Tongji UniversityShanghai201804China School of Materials Science and Engineering Huazhong University of Science and TechnologyWuhan430074China

Designing highly active and durable electrocatalysts towards oxygen reduction reaction(ORR)plays a paramount importance for proton exchange membrane fuel ***-based binary alloys Pt-M(M=3d-transition metals)possessing excellent electronic and geometric properties have received increasing interests as highly active ***,we report a series of Pt_(x)Co/C(x=1,2,3)catalysts by a facile one-pot soft-chemistry *** the acidic conditions,the mass activities of PtCo/C,Pt_(2)Co/C and Pt_(3)Co/C are 0.526,0.462 and 0.441 A·mgPt^(-1),which are 2.60,2.31 and 2.22 times higher than that of Pt/C(0.200 A·mgPt^(-1)),*** specific activities of PtCo/C,Pt_(2)Co/C and Pt_(3)Co/C are 706.59,679.41 and 801.83μA·cm^(-2),which are accordingly 2.89,2.76 and 3.28 times higher than that of Pt/C(244.75μA·cm^(-2)).Notably,Pt_(3)Co/C shows a remarkable *** 5000 cycles of the accelerated durability testing,the mass activity and specific activity of Pt_(3)Co/C catalyst are 2.47 and 3.80 times higher than that of the commercial Pt/C,*** improved ORR activity and durability can be ascribed to the synergistic interaction between Pt and Co.

关键词： Proton exchange membrane fuel cells(PEMFCs) Pt_(x)Co/C catalysts Synergetic effect Oxygen reduction reaction(ORR) One-pot synthesis

Structural Design and Application of Azo-based Supramolecular Polymer Systems

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Chinese Journal of Polymer Science 2019年第12期37卷 1183-1199,I0004页

作者： hui-Tao Yua Jun-Wen Tang Yi-Yu feng wei feng School of Materials Science and Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjin 300072China Tianjin Key Laboratory of Composite and Functional Materials Tianjin 300072China Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072China

This article presents a brief overview of recent advances in azo-containing supramolecular *** literature,it has been shown that azo supramolecular polymers and their composite materials exhibit fast and intelligent responses to various external stimuli,such as temperature,pH change,redox reagents,ligands,coupling reagents,*** applications,these systems are widely used for molecular motors,shape memory,liquid crystal,solar thermal energy storage,signal transmission,intelligent encryption,and other ***,these systems can function as key components for device upgrade ***,the design and rules of azo supramolecular polymers are still not supported by an exact *** about the relationship between the spatial structure and behavior is lacking,and new supramolecular materials cannot be designed by adding functional moieties to known azo *** on the current research status,this review mainly summarizes the structural design principles as well as structures and applications of known azo supramolecules;meanwhile,it highlights the emerging development fields,recent advances,and prospects in fabricating sei住assembling intelligent supramolecular systems with azo supramolecular polymers as responsive *** goal of this review is to bring new inspiration to researchers who want to optimize the chemical structure,steric conformation,electrostatic environment,and specific molecular functionalization.

关键词： Azo Supramolecular Structures Application Prospect