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Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai Li Zhen Ma jin-Hua gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

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基于自适应观测器的发动机进气流量估计

吉林大学学报（工学版） 2020年第6期50卷 1958-1966页

作者：高金武孙铂奇高炳钊陈虹吉林大学汽车仿真与控制国家重点实验室长春130022 吉林大学通信工程学院长春130022 吉林大学汽车工程学院长春130022

提出了一种自适应观测器,可以同时对系统状态变量和系统时变参数进行观测和辨识。该方法根据进气压力和节气门处空气流量辨识得到充气效率,并根据速度密度模型计算得到最终进入气缸的空气流量。最后,对估计算法的收敛性进行了分析,通过... 详细信息

提出了一种自适应观测器,可以同时对系统状态变量和系统时变参数进行观测和辨识。该方法根据进气压力和节气门处空气流量辨识得到充气效率,并根据速度密度模型计算得到最终进入气缸的空气流量。最后,对估计算法的收敛性进行了分析,通过发动机台架试验验证了算法的有效性。结果表明,稳态和瞬态工况下本文方法都具有较好的进气流量估计精度。

关键词：车辆工程进气流量估计自适应观测器时变参数充气效率

Review of precipitation strengthening in ultrahigh-strength martensitic steel

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao Tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui wu Shuize Wang Guilin wu Junheng gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable Technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials Science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent Technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

基于PSO-LSTM的质子交换膜燃料电池退化趋势预测

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吉林大学学报（工学版） 2022年第9期52卷 2192-2202页

作者：高金武贾志桓王向阳邢浩吉林大学汽车仿真与控制国家重点实验室长春130022 吉林大学通信工程学院长春130022 杭州电子大学自动化学院杭州310018 大连理工大学工业装备智能控制与优化教育部重点实验室大连116024

提出了一种基于粒子群优化(PSO)算法的长短期记忆网络(LSTM)方法,对质子交换膜燃料电池(PEMFC)的电堆电压进行了退化预测。首先,分析了PEMFC的退化机理。然后,应用LSTM建立了电压退化预测模型,并采用Dropout层来防止过拟合以提高模型的... 详细信息

提出了一种基于粒子群优化(PSO)算法的长短期记忆网络(LSTM)方法,对质子交换膜燃料电池(PEMFC)的电堆电压进行了退化预测。首先,分析了PEMFC的退化机理。然后,应用LSTM建立了电压退化预测模型,并采用Dropout层来防止过拟合以提高模型的泛化能力。此外,使用PSO算法优化LSTM方法中的初始学习率和Dropout概率以提升预测效果。最后,使用IEEE 2014 Data Challenge Data的燃料电池实际老化数据进行验证。结果表明,本文方法可以精确地预测燃料电池的退化,相比于传统的LSTM方法,预测精度提升了50%。

关键词：自动控制技术退化预测燃料电池深度学习长短期记忆网络粒子群优化

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng gao Yu-Gui Peng Peng wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

A mild, configurable, flexible CoNi-LDH（v）/Zn battery based on H-vacancy-induced reversible Zn2+ intercalation

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Journal of Energy Chemistry 2025年第1期100卷 498-508页

作者： Xinyue Cheng Dingsheng wu Hao gao Qingqing Wang Pengfei Lv Sam S.Yoon Qufu Wei Key Laboratory of Eco-textiles Ministry of Education Jiangnan University School of Mechanical Engineering Korea University

Flexible Zn-based batteries have attracted increasing research interest as essential components of wearable energy storage ***,the advancement of flexible aqueous Zn-based batteries based on Co-Ni layered double hydroxide （CoNi-LDH） as the cathode material is hampered by their poor cycling stability and the corrosiveness of alkaline ***,CoNi-LDH nanosheets enriched with H vacancies (CoNi-LDH（v）) were constructed on a flexible carbon cloth （CC） substrate via electrochemical deposition and *** Zn-based battery comprising CoNi-LDH（v）@CC as the cathode exhibited highly reversible conversion reactions and stable operation in 3 M ZnSO4electrolyte （pH=4）.The battery delivered an excellent specific capacity (225 mA h g-1,0.26 mA h cm-2),acceptable cycling stability（53.9%,900 cycles）,and high discharging *** abundant H vacancies served as active sites for the reversible intercalation of Zn2+and the extravasation of NO3-generated channels and space for Zn2+transport and storage,together enabling an excellent Zn2+storage ***,a sandwich-structured solid-state CoNi-LDH（v）@CC//Zn@CC battery was fabricated and was found to exhibit a noteworthy electrochemical performance and mechanical *** a proof of concept,the unencapsulated battery powered a digital watch under various deformation conditions and operated stably for 80 ***,the flexible battery displayed outstanding customizability,maintaining an open-circuit voltage of 1.42 V even after being cut *** proposed engineering strategy contributes to the realization of textiles with truly wearable energy-storage devices.

关键词： CoNi/Zn battery H vacancies Mild aqueous electrolyte Tailorable battery Wearable energy storage device

基于滑模观测器的质子交换膜燃料电池阴极进气系统解耦控制

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吉林大学学报（工学版） 2022年第9期52卷 2156-2167页

作者：高金武王义琳刘华洋王艺达吉林大学汽车仿真与控制国家重点实验室长春130022 吉林大学通信工程学院长春130022

针对质子交换膜燃料电池(PEMFC)阴极进气系统,提出了一种新型的解耦控制策略,解决了系统进气流量与压力的协同控制难题,实现了二者的高精度控制。建立了关于流量和压力的线性变参数模型,基于模型设计了一种滑模观测器与状态反馈控制器... 详细信息

针对质子交换膜燃料电池(PEMFC)阴极进气系统,提出了一种新型的解耦控制策略,解决了系统进气流量与压力的协同控制难题,实现了二者的高精度控制。建立了关于流量和压力的线性变参数模型,基于模型设计了一种滑模观测器与状态反馈控制器相结合的控制方案,其中状态反馈的增益值通过线性二次型调节器(LQR)进行求解。将控制方案在PEMFC阴极试验平台上进行验证,结果表明,本文方法可以实现对进气流量和压力的高精度控制,达到解耦控制的目的。

关键词：自动控制技术质子交换膜燃料电池阴极进气控制解耦控制滑模观测器线性二次型调节器

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先进国家新教师职前职后培训的经验与启示

科教文汇 2018年第24期 25-26,72页

作者：高静吴晋江苏第二师范学院教务处江苏南京210000

随着国务院《教师资格条例》的颁布,我国教师从业资格正式面向非师范生及社会人士开放,在此背景下,除了思想水平、语言表达要达标,教育学及心理学等工具性知识、专业学科的本体性知识要通过考核之外,教育实习经验成为了区分师范生与其... 详细信息

随着国务院《教师资格条例》的颁布,我国教师从业资格正式面向非师范生及社会人士开放,在此背景下,除了思想水平、语言表达要达标,教育学及心理学等工具性知识、专业学科的本体性知识要通过考核之外,教育实习经验成为了区分师范生与其他考生的重要依据。通过教育实习作为职前培训可以更好更快地度过新教师专业发展的"生存期",加速新手教师向专家型教师转变。同时还应建立职前职后一体化的教师培训模式;辅之以教师教学业务档案推行同伴互助与专家引领;给予国家性的监控和财政扶持;不断提升教师的专业性,促进教师专业的不断发展。

关键词：教育实习师范生实习实习模式

Sky location of massive black hole binaries in the foreground of Galactic white dwarf binaries

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 97-108页

作者： Pan Guo Hong-Bo jin Cong-Feng Qiao Yue-Liang wu The International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of Sciences The School of Physical Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences Institute of Theoretical Physics Chinese Academy of Sciences

For space-based gravitational wave （GW） detection,the main noise source for massive black hole binaries （MBHBs） is attributed to approximately 10～7double white dwarf binaries in the *** a GW source,the amplitude of the detector response,recorded by a space-based gravitational wave detector,exhibits a modulation effect with a year period when observing the source from various orbital *** the adverse conditions mentioned above,where there is a strong foreground noise and annual modulation in the signals,we employed the wavelet transform and the strong-amplitude relevant orbital position search methods,which allows the weak MBHB sources to achieve higher locating *** detail,for two MBHB sources of lower intensity,the precision of luminosity distance,represented by the ratio ?DL/DLat the 95%confidence level,is enhanced by factors of ～*** angular resolutions,denoted by??s,are enhanced by a factor of ～*** improvements increase the number of detectable GW sources,facilitate multi-messenger follow-up observations and provide constraints on the cosmological constant.

关键词： space-based gravitational wave detection gravitational waves massive black hole binaries