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7th International Conference on Artificial Intelligence and Security, ICAIS 2021

作者： Lu, Wei Feng, Jintao Yang, Hao Zeng, Hui Pan, Junjie Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu610213 China School of Computer Science Chengdu University of Information Technology Chengdu610225 China School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu610054 China

ISBN: (纸本)9783030786175

Nuclear reactor computing software need to process and maintain complex and massive data sets. In order to meet the requirement of mass data storage and processing in software, the data storage model and I/O method and programming interface of HDF5 (Hierarchical Data Format v5) are deeply studied. According to the data storage and processing requirement of typical nuclear reactor computing data such as assembly or core neutronics computing data and core thermal-hydraulic computing data, RCDF-H5 (reactor Compute Data Framework based on HDF5) is proposed. KYMRES (KYlin-2 Main RESults databank) and COMRES (COre Main RESults databank) are designed and implemented based on RCDF-H5. The performance tests show that RCDF-H5 has a higher I/O efficiency than conventional storage solutions. A new data storage and management solution for nuclear reactor computing software is provided. © 2021, Springer Nature Switzerland AG.

关键词： Digital storage

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HIGH TEMPERATURE PLASTIC FLOW OF POLYSYNTHETIC TWINNED TIAL SINGLE CRYSTAL 1

HIGH TEMPERATURE PLASTIC FLOW OF POLYSYNTHETIC TWINNED TIAL ...

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1st International Conference on Mechanical System Dynamics, ICMSD 2022

作者： Feng, Chenming Li, Xiaohai Chen, Fengrui Qi, Zhixiang Chen, Yang Zheng, Gong Li, Pei Chen, Guang MIIT Key Laboratory of Advanced Metallic and Intermetallic Materials Technology Engineering Research Center of Materials Behavior and Design Ministry of Education Nanjing University of Science and Technology Nanjing210094 China

ISBN: (数字)9781839537837

ISBN: (纸本)9781839537837

Polysynthetic twinned (PST) TiAl single crystal possesses great potentials for high-temperature applications. The research on high temperature mechanical behavior and wrought process of PST TiAl single crystal have great significance for application in aeroengine blades. In this paper, PST TiAl single crystal was compressed at high temperature to study the dynamic plastic flow behavior. The strength decreased with the increase of temperature and the decrease of strain rate. The processing map of PST TiAl single crystal was calculated using dynamic material model. It is revealed that the wrought temperature of PST TiAl single crystal should be high, whereas the strain rate should be low. The hot deformation activation energy of PST TiAl single crystal was then kinetically calculated to analyse the constitutive equation, which has been verified to be reliable. These paraments and models can guide the selection of hot wrought process and the prediction of high temperature service performance for PST TiAl single crystal, thus providing database to the application of PST TiAl single crystal for designing mechanical systems. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Constitutive equations

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Multiscale mechanics of noncovalent interface in graphene oxide layered nanocomposites

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Theoretical & Applied Mechanics Letters 2022年第1期12卷 3-9页

作者： ZeZhou He YinBo Zhu HengAn Wu CAS Key Laboratory of Mechanical Behavior and Design of Materials Department of Modern MechanicsCAS Center for Excellence in Complex System MechanicsUniversity of Science and Technology of ChinaHefei 230027China

Noncovalent interfaces play a vital role in inelastic deformation and toughening mechanisms in layered nanocomposites due to their dynamical recoverability. When interfacial engineering is applied to design layered nanocomposites, shear-lag analysis is usually implemented to evaluate the capability of interfacial loading transfer. Here, we introduce a multiscale shear-lag model that correlates macroscale mechanical properties with the molecular mechanisms to quantify the effects of interfacial configuration in graphene oxide(GO) layered nanocomposites. By investigating the mechanical responses of commensurate and incommensurate interfaces, we identify that the commensurate interface exhibits a pronounced size effect due to the nucleation and propagation of interfacial defects, whereas the incommensurate interface displays uniform deformation. Our predictions are further validated through large-scale molecular dynamics simulations for GO layered nanocomposites. This work demonstrates how size effects and interfacial configurations can be exploited to fabricate layered nanocomposites with superior mechanical properties despite relying on weak noncovalent interfaces.

关键词： Multiscale mechanics Noncovalent interface Commensurate and incommensurate Shear-lag model Layered nanocomposites

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Multiscale Bilateral Attention Fusion Network for Pansharpening

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2024年第11期5卷 5828-5843页

作者： Guo, Zhongyuan Li, Jiawei Lei, Jia Liu, Jinyuan Zhou, Shihua Wang, Bin Kasabov, Nikola K. Dalian University Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education School of Software Engineering Dalian116622 China University of the Science and Technology Beijing School of Computer and Communication Engineering Beijing100083 China Dalian University of Technology School of Mechanical Engineering Dalian116024 China Auckland University of Technology Knowledge Engineering and Discovery Research Institute Auckland1061 New Zealand University of Ulster Intelligent Systems Research Center LondonderryBT48 7JL United Kingdom Bulgarian Academy of Sciences IICT Sofia1000 Bulgaria

High-resolution multispectral (HRMS) images combine spatial and spectral information originating from panchromatic (PAN) and reduced-resolution multispectral (LRMS) images. Pansharpening performs well and is widely used to obtain HRMS images. However, most pansharpening approaches determine the ratio of PAN and LRMS images through direct interpolation, which may introduce artifacts and distort the color of the fused results. To address this issue, an unsupervised progressive pansharpening framework, MSBANet, is proposed, which adopts a multistage fusion strategy. Each stage contains an attention interactive extraction module (AIEM) and a multiscale bilateral fusion module (MBFM). The AIEM extracts spatial and spectral features from input images and captures the correlations between features. The MBFM can efficiently integrate information from the AIEM and improve MSBANet context awareness. We design a hybrid loss function that enhances the ability of the fusion network to store spectral and texture details. In qualitative and quantitative experimental studies on four datasets, MSBANet outperformed state-of-the-art pansharpening techniques. The code will be released. © 2024 IEEE.

关键词： Data mining

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Study of aerodynamic and inertial forces of a experimental and numerical methods

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Chinese Journal of Aeronautics 2022年第6期35卷 63-76页

作者： Xiaowu YANG Bifeng SONG Wenqing YANG Dong XUE Yang PEI Xinyu LANG School of Aeronautics Northwestern Polytechnical UniversityXi’an 710072China National Key Laboratory of Science and Technology on Aerodynamic Design and Research Northwestern Polytechnical UniversityXi’an 710072China Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China

The force-generation mechanism of a dovelike flapping-wing micro air vehicle was studied by numerical simulation and *** obtain the real deformation pattern of the flapping wing,the digital image correlation technology was used to measure the dynamic deformation of the *** dynamic deformation data were subsequently interpolated and embedded into the CFD solver to account for the aeroelastic *** dynamic deformation data were further used to calculate the inertial forces by regarding the wing as a system of particles to take into account the wing *** temporal variation of the forces produced by the flapping wing was measured by a miniature load *** numerical results provide more flow details of the unsteady aerodynamics of the flapping wing in terms of vortex formation and *** calculated results of the inertial forces are analyzed and compared with the CFD results which represent the aerodynamic *** addition,the total forces,i.e.,the sum of the CFD result and inertial result,are compared with the experimental results,and an overall good agreement is obtained.

关键词： Aerodynamic force CFD Digital image correlation Flapping-wing micro air vehicles Inertial force

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Magnetic and electronic properties of bulk and two-dimensional FeBi_(2)Te_(4):A first-principles study

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Chinese Physics B 2023年第8期32卷 450-456页

作者：王倩倩赵建洲吴维康周胤宁 Qile Li Mark T.Edmonds 杨声远 Research Laboratory for Quantum Materials Singapore University of Technology and DesignSingapore 487372Singapore Co-Innovation Center for New Energetic Materials Southwest University of Science and TechnologyMianyang 621010China Key Laboratory for Liquid--Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan 250061China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics Materials EngineeringUniversity of MacaoMacao Special Administrative RegionChina School of Physics and Astronomy Monash UniversityClaytonVIC 3800Australia ARC Centre for Future Low Energy Electronics Technologies Monash UniversityClaytonVIC 3800Australia

Layered magnetic materials,such as MnBi_(2)Te_(4),have drawn much attention owing to their potential for realizing twodimensional(2D)magnetism and possible topological ***,FeBi_(2)Te_(4),which is isostructural to MnBi_(2)Te_(4),has been synthesized in experiments,but its detailed magnetic ordering and band topology have not been clearly understood ***,based on first-principles calculations,we investigate the magnetic and electronic properties of FeBi_(2)Te_(4)in bulk and 2D *** show that different from MnBi_(2)Te_(4),the magnetic ground states of bulk,single-layer,and bilayer FeBi_(2)Te_(4)all favor a 120°noncollinear antiferromagnetic ordering,and they are topologically trivial narrow-gap *** the bilayer case,we find that a quantum anomalous Hall effect with a unit Chern number is realized in the ferromagnetic state,which may be achieved in experiment by an external magnetic field or by magnetic proximity *** work clarifies the physical properties of the new material system of FeBi_(2)Te_(4)and reveals it as a potential platform for studying magnetic frustration down to 2D limit as well as quantum anomalous Hall effect.

关键词： FeBi_(2)Te_(4) two-dimensional(2D)magnetism noncollinear antiferromagnet quantum anomalous Hall effect first-principles calculation

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Thermal-Hydraulic Characteristics of Helical Cruciform Single Rod Based on Cfd Investigation

SSRN

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SSRN 2024年

作者： Chen, Yiwen Zhang, Dalin Jiang, Dianqiang Deng, Jian Zhang, Xisi Wang, Xinan Tian, Wenxi Qiu, Suizheng Su, Guanghui State Key Laboratory of Multiphase Flow in Power Engineering Shaanxi Key Laboratory of Advanced Nuclear Energy and Technology School of Nuclear Science and Technology Xi’an Jiaotong University Xi’an710049 China Nuclear Power Institute of China 328 Changshun Avenue Chengdu610213 China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu610213 China China Institute of Atomic Energy Beijing611731 China

To increase power density in nuclear reactors, the helical cruciform fuel (HCF) is designed as a fundamental element. HCF takes advantages of strong mixing effects, self-supporting features, and strengthened heat transfer, potential to increase the fuel performance in nuclear reactors. In this paper, friction factor and heat transfer coefficient empirical correlations of HCF single rod cooled by water were proposed using a geometric dimensionless number based on numerical simulation. The velocity field, and temperature distribution were obtained to discuss influences of geometric sizes on the fuel performance. Finally, correlations with a geometric dimensionless number were validated with various cases, whose application conditions were also proposed and discussed. This paper provides a guide for study of heat transfer and fluid flow in helical structures, and a reference for establishment of reactor system model using helical cruciform fuels. © 2024, The Authors. All rights reserved.

关键词： Heat transfer coefficients

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A Novel Low Loss Superjunction Reverse Blocking IGBT with an Optimized Field-Stop Layer and Carrier Storage Layer 3

A Novel Low Loss Superjunction Reverse Blocking IGBT with an...

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3rd Asia Power and Electrical technology Conference, APET 2024

作者： Xia, Yun Chen, Gang Wan, Yuxi Chen, Wanjun Sun, Ruize Liu, Chao Wang, Yan Wang, Xiaoping Silicon Carbide Research Group Shenzhen Pinghu Laboratory Shenzhen China State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Chengdu China School of Integrated Circuits Tsinghua University Beijing China Simulation & Design Group Shenzhen Pinghu Laboratory Shenzhen China

ISBN: (纸本)9798350367690

By establishing an analytical model of the electric field (E-Field) distributions in superjunction (SJ) insulated gate bipolar transistor (IGBT) with carrier storage (CS) layer, a novel SJ reverse blocking (RB) IGBT with an optimized field-stop layer and carrier storage layer (OFC SJ RB-IGBT) for matrix converters is proposed and investigated in this paper. Under the guide of the proposed analytical model, the doping distributions of the field-stop (FS) layer and CS layer in the proposed device are optimized to alleviate the contradiction of the forward blocking capability and reverse blocking capability. By dividing the FS layer into two parts with different doping and shielding the highly doped CS layer with a deep gate trench and P-pillar, the proposed structure realizes 1.2 kV bidirectional blocking capability and better on-state voltage drop (Von) and turn-off loss (Eoff) tradeoff relationship. The simulation results show that the proposed structure achieves a fast turnoff speed, whose Eoff decreases 78.71% and 20.84%, respectively, compared with the bidirectional electric field enhanced (BEFE) FS RB-IGBT and the SJ RB-IGBT with a shorted collector trench (SCT) at the same Von of 1.20 V. © 2024 IEEE.

关键词： Insulated gate bipolar transistors (IGBT)

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EXPLICIT-Kinase:A gene expression predictor for dissecting the functions of the Arabidopsis kinome

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Journal of Integrative Plant Biology 2022年第7期64卷 1374-1393页

作者： Yuming Peng Wanzhu Zuo Hui Zhou Fenfen Miao Yu Zhang Yue Qin Yi Liu Yu Long Shisong Ma MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics School of Life SciencesUniversity of Science and Technology of ChinaInnovation Academy for Seed DesignChinese Academy of SciencesHefei 230027China State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475001China State Key Laboratory for Plant Molecular Genetics Center of Excellence for Molecular Plant SciencesChinese Academy ofSciencesShanghai 200032China School of Data Science University of Science and Technology of ChinaHefei 230027China

Protein kinases regulate virtually all cellular processes,but it remains challenging to determine the functions of all protein kinases,collectively called the“kinome”,in any *** developed a computational approach called EXPLICIT-Kinase to predict the functions of the Arabidopsis *** the activities of many kinases can be regulated transcriptionally,their gene expression patterns provide clues to their functions.A universal gene expression predictor for Arabidopsis was constructed to predict the expression of 30,172 nonkinase genes based on the expression of 994 *** model reconstituted highly accurate transcriptomes for diverse Arabidopsis *** identified the significant kinases as predictor kinases for predicting the expression of Arabidopsis genes and ***,these predictor kinases were often regulators of related pathways,as exemplified by those involved in cytokinesis,tissue development,and stress *** analyses revealed that portions of these predictor kinases are shared and conserved between Arabidopsis and *** an example,we identified a conserved predictor kinase,RAF6,from a stomatal movement *** verified that RAF6 regulates stomatal *** can directly interact with SLAC1,a key anion channel for stomatal closure,and modulate its channel *** approach enables a systematic dissection of the functions of the Arabidopsis kinome.

关键词： kinase kinome predictor

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Novel Bilayer-Shelled N,O-Doped Hollow Porous Carbon Microspheres as High Performance Anode for Potassium-Ion Hybrid Capacitors

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Nano-Micro Letters 2023年第9期15卷 423-435页

作者： Zhen Pan Yong Qian Yang Li Xiaoning Xie Ning Lin Yitai Qian Department of Applied Chemistry University of Science and Technology of ChinaHefei 230026People’s Republic of China Yongjiang Laboratory Ningbo 315202People’s Republic of China China National Building Material Design&Research Institute Co. Ltd.No.208Huazhong RoadGongshu DistrictHangzhou 310022People’s Republic of China

With the advantages of high energy/power density,long cycling life and low cost,dual-carbon potassium ion hybrid capacitors(PIHCs)have great potential in the field of energy ***,a novel bilayer-shelled N,O-doped hollow porous carbon microspheres(NOHPC)anode has been prepared by a self-template method,which is consisted of a dense thin shell and a hollow porous spherical ***,the NOHPC anode possesses a high K-storage capacity of 325.9 mA h g^(−1)at 0.1 A g^(−1)and a capacity of 201.1 mAh g^(−1)at 5 A g^(−1)after 6000 *** combination with ex situ characterizations and density functional theory calculations,the high reversible capacity has been demonstrated to be attributed to the co-doping of N/O heteroatoms and porous structure improved K+adsorption and intercalation capabilities,and the stable long-cycling performance originating from the bilayer-shelled hollow porous carbon sphere ***,the hollow porous activated carbon microspheres(HPAC)cathode with a high specific surface area(1472.65 m^(2)g^(−1))deriving from etching NOHPC with KOH,contributing to a high electrochemical adsorption capacity of 71.2 mAh g^(−1)at 1 A g^(−1).Notably,the NOHPC//HPAC PIHC delivers a high energy density of 90.1 Wh kg^(−1)at a power density of 939.6 W kg^(−1)after 6000 consecutive charge-discharge cycles.

关键词： Self-template method Bilayer-shelled hollow porous structure N,O-doped carbon microspheres Dual-carbon potassium‐ion hybrid capacitor

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