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38th Conference on Neural Information Processing Systems, NeurIPS 2024

作者： Cao, Haoqun Meng, Zizhuo Ke, Tianjun Zhou, Feng Center for Applied Statistics School of Statistics Renmin University of China China Data Science Institute University of Technology Sydney Australia Beijing Advanced Innovation Center for Future Blockchain and Privacy Computing China

Score matching estimators have gained widespread attention in recent years partly because they are free from calculating the integral of normalizing constant, thereby addressing the computational challenges in maximum likelihood estimation (MLE). Some existing works have proposed score matching estimators for point processes. However, this work demonstrates that the incompleteness of the estimators proposed in those works renders them applicable only to specific problems, and they fail for more general point processes. To address this issue, this work introduces the weighted score matching estimator to point processes. Theoretically, we prove the consistency of our estimator and establish its rate of convergence. Experimental results indicate that our estimator accurately estimates model parameters on synthetic data and yields results consistent with MLE on real data. In contrast, existing score matching estimators fail to perform effectively. Codes are publicly available at https://***/KenCao2007/WSM_TPP. © 2024 Neural information processing systems foundation. All rights reserved.

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research and application of approximate rectangular section control technology in hot strip mills

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Journal of Iron and Steel research International 2021年第3期28卷 279-290页

作者： Hai-nan He Jian Shao Xiao-chen Wang Quan Yang Yang Liu Dong Xu You-zhao Sun National Engineering Research Center for Advanced Rolling Technology University of Science and Technology BeijingBeijing100083China

Profile requirements of silicon steel strip are extremely high and the thickness difference of cold-rolled products is usually less than 7μm,and the profile quality of hot-rolled strip is the key to ensure the thickness difference of cold-rolled *** order to produce the silicon steel strip with high-precision shape,the concept of quasi-rectangular rolling during hot continuous rolling was put forward;the equipment configuration and technical method of approximate rectangular section control were *** the roughing multi-target load distribution technology and the roll configuration technology for uniform wear of a 4-high rolling mill,the strip crown of transfer bar was reduced and the profile control stability was *** variable contact back-up roll technology on all stands in the finishing rolling process,equipped with symmetry variable taper work roll and long-stroke intelligent shifting strategy in the downstream stands,and using side rolling lubrication technology can make the roll wear more uniform,reduce the edge drop of silicon steel strip,improve the profile quality,and make the strip section of finishing exit"quasi-rectangular".In addition,induction furnace and side heater were also equipped to guarantee the temperature uniformity of the strip,so as to improve the stability of profile *** whole control technology is based on the 1580-mm hot continuous rolling production line,designed,and developed according to the characteristics of equipment and products,and has been successfully applied,which can obtain the approximate rectangular strip section satisfying the flatness quality,and improve the strip section precision of silicon steel and other products.

关键词： Approximate rectangular section Hot strip mill Transfer bar Roll contour Shifting strategy Profile control

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In situ formed cross-linked polymer networks as dual-functional layers for high-stable lithium metal batteries

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Journal of Energy Chemistry 2023年第4期79卷 253-262页

作者： Lei Shi Wanhui Wang Chunjuan Wang Yang Zhou Yuezhan Feng Tiekun Jia Fang Wang Zhiyu Min Ji Hu Zhigang Xue School of Materials Science and Engineering School of Environmental Engineering and ChemistryLuoyang Institute of Science and TechnologyLuoyang 471023HenanChina Key Laboratory for Material Chemistry of Energy Conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina Key Laboratory of Advanced Materials Processing&Mold(Ministry of Education) National Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002HenanChina Henan Intelligent Manufacturing Engineering Technology Research Center for Building Profile Luoyang Institute of Science and TechnologyLuoyang 471023HenanChina Henan Province International Joint Laboratory of Materials for Solar Energy Conversion and Lithium Sodium based Battery Luoyang Institute of Science and TechnologyLuoyang 471023HenanChina

Lithium-metal anodes(LMAs)have been recognized as the ultimate anodes for next-generation batteries with high energy density,but stringent assembly-environment conditions derived from the poor moisture stability dramatically hinder the transformation of LMAs from laboratory to ***,an in situ formed cross-linked polymer layer on LMAs is designed and constructed by a facile thiol-acrylate click chemistry reaction between poly(ethylene glycol)diacrylate(PEGDA)and the crosslinker containing multi thiol groups under UV *** to the hydrophobic nature of the layer,the treated LMAs demonstrate remarkable humid stability for more than 3 h in ambient air(70%relative humidity).The coating humid-resistant protective layer also possesses a dual-functional characterization as solid polymer electrolytes by introducing lithium bis(trifluoromethanesulfonyl)imide in the system in *** intimate contact between the polymer layer and LMAs reduces interfacial resistance in the assembled Li/LiFePO_(4)or Li/LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)full cell effectively,and endows the cell with an outstanding cycle performance.

关键词： Lithium-metal anode Humid-resistant protective film Solid-state polymer electrolytes Cross-linked polymers

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Laser Powder Bed Fusion of Beta-Type Titanium Alloys for Biomedical Application:A Review

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Acta Metallurgica Sinica(English Letters) 2024年第1期37卷 17-28页

作者： Xuan Luo Chao Yang Dongdong Li Lai-Chang Zhang State Key Laboratory of Materials Processing and Die&Mould Technology Huazhong University of Science and TechnologyWuhan430074China National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic MaterialsSouth China University of TechnologyGuangzhou510640China Centre for Advanced Materials and Manufacturing School of EngineeringEdith Cowan University270 Joondalup DriveJoondalupPerthWA6027Australia

Additive manufacturing ofβ-type titanium alloy is expected to replace Ti-6Al-4V alloy in the field of orthopedic implantation because of their low elastic modulus,excellent corrosion resistance,and *** briefly introducing the laser powder bed fusion(LPBF)process and physical phenomena,this paper reviews the recent progresses in LPBF-edβ-type Ti *** strategies to strengthening and tougheningβ-type Ti alloys are critically *** is followed by the processing routes employed to achieve to low modulus for orthopedic applications,especially a new methodology for tailoring crystallographic orientation called multi-track coupled directional *** effect of processing and compositions on performance metrics ofβ-type Ti alloys included corrosion behavior,and biocompatibility is *** the end,challenges in additive manufacturing ofβ-type Ti alloys in future are highlighted,with the aim to ensue clinical application of LPBF-edβ-type Ti alloys.

关键词： β-type Ti alloys Laser powder bed fusion Mechanical properties Elastic modulus Biocompatibility

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Effect of Al_(2)O_(3) Nanoparticles on the Compression Ignition Performances and Emitted Pollutants of a Diesel Engine

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Fluid Dynamics & Materials Processing 2023年第11期19卷 2847-2861页

作者： Noora S.Ekab Ahmed Q.Salam Ali O.Abd Miqdam T.Chaichan Electromechanical Engineering Department University of Technology-IraqBaghdad65035Iraq Environment Research Center University of Technology-IraqBaghdad65035Iraq Applied Science Department University of Technology-IraqBaghdad65035Iraq Energy and Renewable Energies Technology Center University of Technology-IraqBaghdad65035Iraq

To improve the performances of diesel engines and to reduce the pollutants they emit,aluminum oxide nanopar-ticles in varying quantities(50,100,150 ppm)have been added to conventional diesel *** results of such experimental tests have revealed that the addition of nano-Al_(2)O_(3) particles to the diesel fuel reduces its consump-tion by 0.488%,1.02%,and 1.377%,respectively and increases the brake thermal efficiency by 1.4%,2.6%,and 3.8%,*** concentrations of undesired gases decrease accordingly by 1.5%,1.7%,and 2.8%for HC and by 5.88%,11.7%,and 17.6%,respectively,for *** the same percentages of nanoparticles,NO_(x) increases by 2.65,4.36,and 5.37,while the TSP(Total Suspended Particulate)decreases by 22%,34.66%,and 49.7%,*** the same conditions,sulfur dioxide pollutants increase by 4.57%,8.8%and 12.89%,and H_(2)S levels by 4.7%,7.81%and 8.9%,respectively.

关键词： Nao-Al_(2)O_(3) suspension CO NO_(x)-PM trade-off SO_(2) H_(2)

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锡基硫化物电催化剂中强且均匀的Sn–S键促进CO2到甲酸盐的高效转化（英文）

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science China Materials 2025年第5期68卷 1602-1610页

作者：侯国禹崔洪花李亿程刘亚杨振艺赵明罗中箴邹志刚张玉 School of Mechanical and Power Engineering East China University of Science and Technology Laboratory of Eco-materials Advanced Technology College of Materials Science and EngineeringFuzhou University Department of Materials Science and Engineering National University of Singapore Eco-materials and Renewable Energy Research Center College of Engineering and Applied SciencesNanjing University

电化学CO2还原反应（CO2RR）是缓解全球CO2过量排放的有效途径之一.相比于单纯的金属催化剂,金属硫化物普遍具有更高的甲酸盐选择性及活性,因此被认为是一类独特的CO2RR电催化剂.然而,该类催化剂在负电位易发生组分还原,从而导致S元素... 详细信息

电化学CO2还原反应（CO2RR）是缓解全球CO2过量排放的有效途径之一.相比于单纯的金属催化剂,金属硫化物普遍具有更高的甲酸盐选择性及活性,因此被认为是一类独特的CO2RR电催化剂.然而,该类催化剂在负电位易发生组分还原,从而导致S元素大量溢出.在此,我们合成了一系列具有高结晶度的硫化锡（SnS,Sn2S3和SnS2）作为模型催化剂,揭示了Sn–S键强在原子构型上的分布对甲酸盐生成选择性及活性的影响规律.其中,SnS2具有较强且均匀分布的Sn–S键,能够有效抑制S溢出,形成有利于CO2RR的Sn/SnS2异质界面;而SnS的Sn–S键强较弱,导致其在CO2RR过程中快速还原成惰性金属Sn.而具有混合键强的Sn2S3则从最弱的Sn–S键开始断裂,引发了更加快速的组分还原,表现出较差的CO2RR性能.因此,S nS2表现出最高的甲酸盐法拉第效率9 3.8%±0.5 9%(-1.0VRHE)及最高的偏电流密度(195.3 mA cm-2,-1.2 VRHE).该工作为深入理解金属基硫化物中金属-硫键强及其分布对CO2RR制甲酸盐的影响提供一定的科学依据.

关键词： CO2 reduction tin sulfides bond strength formate S loss

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Influence mechanism of different elements and alloy phases on the corrosion resistance of Zn-Al-Mg coated steel in the atmospheric environment: A review

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Corrosion Communications 2024年第1期13卷 49-59页

作者： Xin He Xun Zhou Ting Shang Wuhua Liu Guangrui Jiang Chao Liu Xuequn Cheng Xin Zhang Xiaogang Li Institute of Advanced Materials&Technology University of Science and Technology Beijing National Materials Corrosion and Protection Data Center University of Science and Technology Beijing Technology Research Institute Shougang Group Co.Ltd. Beijing Key Laboratory of Green Recyclable Process for Iron&steel Production Technology Shougang Jingtang United Iron&Steel Co. Ltd. Institute of New Energy Technology State Power Investment Corporation Central Research Institute

Sacrificial metallic coatings are an effective strategy for mitigating corrosion in steel operating in industrial environments. This review article focuses on examining the protection mechanism of zinc-aluminum-magnesium(Zn-Al-Mg) coatings on steel substrates. Specifically, it investigates the effects of various elements and their corrosion products on the corrosion resistance of Zn-Al-Mg coatings. Furthermore, this review summarizes the formation mechanisms of various specialized corrosion modes that occur following the corrosion of Zn-Al-Mg coatings, based on previous experimental findings. It also includes suggestions for further research areas that could contribute to the development of highly corrosion-resistant and long-lasting coatings. These suggestions are based on published laboratory and field test results available in literature.

关键词： Zn-Al-Mg coated steel Corrosion resistance Corrosion products Black rust Filiform corrosion

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Intelligent logistics system of steel bar warehouse based on ubiquitous information

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International Journal of Minerals,Metallurgy and Materials 2021年第8期28卷 1367-1377页

作者： Hai-nan He Xiao-chen Wang Gong-zhuang Peng Dong Xu Yang Liu Min Jiang Ze-dong Wu Da Zhang He Yan National Engineering Research Center for Advanced Rolling Technology University of Science and Technology BeijingBeijing 100083China

Internet of Things and artificial intelligence technology are the key elements of the intelligent construction of iron and steel production warehouse. This paper puts forward a whole set of intelligent scheme for bar warehouse crane for the guidance of metallurgical process engineering, including cluster rapid self-awareness technology of the smart crane, precise self-executing technique of crane with rigid-flexible hybrid structure, multi-body system kinematics model of the smart crane sling and the swing characteristics model at different azimuth, antiswing control technology based on the optimization objective function, the vehicle model recognition system based on lidar, and the clustering crane dynamic scheduling method based on multi-agent reinforcement learning. The complete intelligent logistics system of the bar warehouse has changed the original operation mode of the warehouse area and realized the unmanned operation and intelligent scheduling of the crane,which is of great significance for improving the production efficiency, reducing the production cost, and improving the product quality.

关键词： intelligent warehouse crane vehicle identification anti-pendulum control multi-agent reinforcement learning

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Novel synthesis of single-crystalline TbCu_(7)-type Sm-Fe powder by low-temperature reduction-diffusion process using molten salt

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Journal of Rare Earths 2022年第7期40卷 1126-1133页

作者： Shusuke Okada Kenta Takagi Magnetic Powder Metallurgy Research Center National Institute of Advanced Industrial Science and Technology(AIST)2266-98 AnagahoraShimoshidami MoriyamaNagoya463-8560Japan

In this study,molten salt was used as a solvent for calcium(Ca)to let a reduction-diffusion(R-D)reaction occur below the melting point of Ca(1115 K),which is the lower limit temperature of the co nventional RD *** the R-D reaction is conducted below 923 K with LiCl molten salt,submicron-sized TbCu_(7)-type Sm-Fe powder is *** c/a ratio of the powder estimated by a synchrotron X-ray diffraction pattern is 0.8456,which is consistent with the Sm_(0.67)Fe_(5.667)(SmFe_(8.5))*** electron backscatter diffraction analysis reveals that single-crystalline TbCu_(7)-type SmFe_(8.5) powder was synthesized for the first time.

关键词： Reduction-diffusion TbCu_(7) Molten salt Permanent magnet Rare earths

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Enhancing Delay-Sensitive Task Offloading: A Multi-agent Deep Reinforcement Learning Algorithm for MEC-Based AIoT Systems 24th

Enhancing Delay-Sensitive Task Offloading: A Multi-agent Dee...

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24th International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 2024

作者： Tang, Fengjie Xu, Jia Liu, Xiao Yao, Aiting Fang, Mingyan Li, Xuejun Anhui Provincial International Joint Research Center for Advanced Technology in Medical Imaging School of Computer Science and Technology Anhui University Hefei China School of Information Technology Deakin University Geelong Australia

ISBN: (纸本)9789819615414

Artificial Intelligence of Things (AIoT) systems are widely utilized in various domains such as smart logistics and smart health. In AIoT systems, computational tasks earmarked for offloading by IoT devices often have different task priorities and heterogeneous resource requirements. However, these factors will affect the QoS of the solution and the task response time. Therefore, motivated by a typical smart warehouse system, a Multi-access Edge Computing (MEC) based distributed task offloading framework is proposed. Afterward, a delay-sensitive mixed-integer programming model is defined to address the imbalanced utilization of computing resources between edge and cloud servers during the offloading process. Finally, based on the attention mechanism, a Priority-Driven Multi-Agent Deep Reinforcement Learning algorithm (PDMA-DRL) is proposed to fulfill real-time resource requirements while reducing the task response time. The PDMA-DRL algorithm consists of two agents, and each agent corresponds to a sub-problem. Comprehensive experimental results demonstrate that our proposed PDMA-DRL algorithm can outperform representative existing methods in generating delay-sensitive task offloading plans and effectively reducing the task response time. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Deep reinforcement learning

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