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产教融合背景下地方高校高质量发展的探赜

黑龙江高教研究 2025年第2期43卷 29-34页

作者：刘宝臣秦福利广西科技大学广西柳州545006

地方高校是我国高等教育序列中的主体,在高等教育普及化阶段,地方高校高质量发展对于推进高等教育强国建设和新质生产力发展具有重要作用。产教融合作为推进教育、科技、人才一体化建设的重要举措,能够促进产业和教育的双向赋能,对于地... 详细信息

地方高校是我国高等教育序列中的主体,在高等教育普及化阶段,地方高校高质量发展对于推进高等教育强国建设和新质生产力发展具有重要作用。产教融合作为推进教育、科技、人才一体化建设的重要举措,能够促进产业和教育的双向赋能,对于地方高校更具独特意义和深刻的时代内涵。产教融合的教育理念和实践方式对地方高校的办学定位、学科专业、人才培养、社会服务、治理体系具有正向作用,相应地提出了促进地方高校高质量发展的五点举措。

关键词：产教融合地方高校高质量发展赋能

Laser direct writing of flexible multifunctional airflow sensors on the Kevlar fabric

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Nano Research 2025年第1期18卷 443-454页

作者： Wei Wang Zi-Qing chen Yong-Qi Li Yu-Long Wang Mei-chen liu Yun-Bo Ruan Yang Zhang Shu-Juan liu Qiang Zhao College of Electronic and Optical Engineering and College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023China State Key Laboratory of Organic Electronics and Information Displays and Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China Zhe Jiang Topsun Logistic Control CO. LTD.Yuhuan 317600China Department of Rehabilitation Medicine School of Acupuncture-Moxibustion and Tuina and School of Health Preservation and RehabilitationNanjing University of Chinese MedicineNanjing 210023China

The growing interest in flexible devices has emerged as a global trend due to their advantages in flexibility,lightweight structure,and wearability,addressing the limitations of traditional *** wearable airflow sensors have been previously reported,the development of flexible fabric-based airflow sensors capable of functioning in environments with open flames—critical for fire rescue operations—has yet to be explored,largely due to the poor fire resistance of conventional *** this work,we first present a flexible,wearable,and multifunctional airflow sensor with excellent fire-resistant properties,fabricated through a simple direct laser writing *** sensor maintains airflow detection capabilities even in the presence of open ***,the fabrication of fabric-based sensors involves complex procedures such as carbon materials doping or vapor-phase deposition,leading to lengthy preparation cycles and high ***,fabric-based devices are inherently prone to *** address these challenges,we introduce twice-vertical laser-induced graphene(TVLIG)as a sensitive and reliable component for fire-resistant airflow *** resulting TVLIG/Kevlar fabric can be integrated into various garments,particularly protective suits,to form sensitive and fire-resistant airflow sensors capable of detecting airflow velocity and direction in both two-dimensional(2D)and three-dimensional(3D)spaces during fire ***,the TVLIG patterns can be expanded to multifunctional platforms,such as glucose detection for injured individuals,offering further applications in rescue *** functional expansion reduces the burden on rescue personnel and streamlines device *** its outstanding sensing capabilities,fire resistance,and expandability,the developed flexible airflow sensor shows great potential for various real-world rescue scenarios,promising advancements in wearable sensing technology for rescue enginee

关键词： flexible airflow sensor direct laser writing twice-vertical laser-induced graphene fire accident rescue Kevlar fabric

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圈层化网络社群对青少年的伦理挑战及其应对

教学与管理 2025年第1期 34-38页

作者：刘昊琛冯永刚山东师范大学教育学部济南250014

青少年在网络空间构筑了基于共同兴趣和偏好的“新社群”。网络社群内部的圈层化趋势加强了青少年之间的联系与共鸣,在一定程度上重塑了他们的社会认知和伦理判断。然而,这种圈层化也带来了新型场域对伦理空间的冲击、圈层区隔对伦理关... 详细信息

青少年在网络空间构筑了基于共同兴趣和偏好的“新社群”。网络社群内部的圈层化趋势加强了青少年之间的联系与共鸣,在一定程度上重塑了他们的社会认知和伦理判断。然而,这种圈层化也带来了新型场域对伦理空间的冲击、圈层区隔对伦理关系的界分、特定惯习对伦理实践的影响和微观规训对伦理意识的裹挟等问题,将他们置于伦理挑战的情境中进行考量。鉴于此,创构主流舆论传播新格局、释放网络圈层整合共振力、激活多元话语互促生命力、注重外部治理和内部自律的统一性,对于网络社会治理和构建网络空间命运共同体具有重要意义。

关键词：圈层化网络社群青少年伦理挑战

Self-consistent kinetic theory with nonlinear wave-particle resonances

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Plasma Science and Technology 2019年第12期21卷 6-12页

作者： liu chen Fulvio ZONCA Institute for Fusion Theory and Simulation and Department of Physics Zhejiang UniversityHangzhou 310027People's Republic of China Department of Physics and Astronomy University of CaliforniaIrvineCA 92697-4575United States of America ENEA C.R.FrascatiVia E.Fermi 45I-00044 Frascati(Rome)Italy

We have developed, based on the oscillating-center transformation, a general theoretical approach for self-consistent plasma dynamics including, explicitly, effects of nonlinear(higherorder) wave-particle resonances. A specific example is then given for low-frequency responses of trapped particles in axisymmetric tokamaks. Possible applications to transport as well as nonlinear wave growth/damping are also briefly discussed.

关键词： gyrokinetics nonlinear phenomena:waves wave propagation and other interactions

(K_(0.5)Na_(0.5))Nb_(1-x)Ta_(x)O_(3)铁电性的第一性原理研究

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原子与分子物理学报 2025年第4期42卷 138-146页

作者：褚新建雷博程刘晨曦刘纪博新疆科技学院信息科学与工程学院库尔勒841000 新疆大学物理科学与技术学院新疆固体物理与器件重点实验室乌鲁木齐830046 西安工业大学光电工程学院西安710032

随着铅基陶瓷的大量使用,造成了严重的环境和健康问题,为了能够找寻替代铅基陶瓷的材料,人们开始了对无铅陶瓷材料的探索.(K_(0.5)Na_(0.5))NbO_(3)材料由于其优异的铁电压电性能,成为了无铅陶瓷材料的代表,但是碱性组分在高温下的高挥... 详细信息

随着铅基陶瓷的大量使用,造成了严重的环境和健康问题,为了能够找寻替代铅基陶瓷的材料,人们开始了对无铅陶瓷材料的探索.(K_(0.5)Na_(0.5))NbO_(3)材料由于其优异的铁电压电性能,成为了无铅陶瓷材料的代表,但是碱性组分在高温下的高挥发性使其应用范围受到了极大的限制.基于这样的考虑,本文基于密度泛函理论的第一性原理方法,探究了(K_(0.5)Na_(0.5))Nb_(1-x)TaxO_(3)(x=0.125,0.25,0.375,0.5,0.625,0.75,0.875,1)九种体系的铁电性能,结果表明:随着Ta浓度的增加,晶格常数发生了突变,由此猜测KNN材料随着Ta浓度的增加,发生了正交-单斜的相变;Ta的掺入能够降低KNN材料的烧结难度,且随着Ta浓度的增加,形成难度逐渐降低;掺杂体系中,Ta-4f轨道与Na-3p,K-4p以及O-2s轨道电子发生了杂化,使导带底Nb-4d与Na-3p电子的态密度峰向高能区移动,禁带宽度呈现增加的趋势;在分析KNN材料铁电性作用机理时发现KNN的铁电极化类型是离子位移型极化,且在[001]方向上不具有极化能力.分析掺杂后各个体系的极化强度,发现随着Ta浓度的增加,极化强度逐渐降低,但是在低浓度掺杂时极化有向上增加的趋势,这可能是体系在低浓存在着正交与单斜的准同型相界(Morphotropic phase boundary,MPB)导致的,由此可以判断,低浓度掺杂有利于提高KNN材料的铁电性能.

关键词：第一性原理钙钛矿结果 KNN 铁电性

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Star-critical Ramsey Numbers of Wheels Versus Odd Cycles

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Acta Mathematicae Applicatae Sinica 2022年第4期38卷 916-924页

作者： Yu-chen liu Yao-jun chen School of Applied Mathematics Nanjing University of Finance and EconomicsNanjing 210023China Department of Mathematics Nanjing UniversityNanjing 210093China

Let K_(1,k)be a star of order k+1 and K_(n)■K_(1,k)the graph obtained from a complete graph K_(n)and an additional vertex v by joining v to k vertices of K_(n).For graphs G and H,the star-critical Ramsey number r_(*)(G,H)is the minimum integer k such that any red/blue edge-coloring of K_(r-1)■K_(1,k)contains a red copy of G or a blue copy of H,where r is the classical Ramsey number R(G,H).Let C_(m)denote a cycle of order m and W_(n)a wheel of order n+***(2010)proved that r_(*)(W_(n),C_3)=n+3 for n≥*** this paper,we show that r_(*)(W_(n),C_(m))=n+3 for m odd,m≥5 and n≥3(m-1)/2+2.

关键词： Ramsey number critical graph star-critical Ramsey number wheel cycle

Research on system-of-systems combat simulation model formal specification and representation

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Journal of Systems Engineering and Electronics 2006年第4期17卷 901-909页

作者： liu chen First Inst. Equipment Research Inst. of Second ArtiUery Beijing 100085 P. R. China

To makesystem-of-systems combat simulation models easy to be developed and reused, simulation model formal specification and representation are researched. According to the view of system-of-systems combat simulation, and based on DEVS, the simulation model＇s fundamental formalisms are explored. It includes entity model, system-of-systems model and experiment model. It also presents rigorous formal specification. XML data exchange standard is combined to design the XML based language, SCSL, to support simulation model representation. The corresponding relationship between SCSL and simulation model formalism is discussed and the syntax and semantics of elements in SCSL are detailed. Based on simulation model formal specification, the abstract simulation algorithm is given and SCSL virtual machine, which is capable of automatically interpreting and executing simulation model represented by SCSL, is designed. Finally an application case is presented, which can show the validation of the theory and verification of SCSL.

关键词： simulation model formalism simulation model representation system-of-systems combat simulation language simulation virtual machine.

Spin polarization formula for Dirac fermions at local equilibrium

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Science China(Physics,Mechanics & Astronomy) 2022年第7期65卷 121-128页

作者： Yu-chen liu Xu-Guang Huang Physics Department and Center for Field Theory and Particle Physics Fudan UniversityShanghai 200433China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Fudan UniversityShanghai 200433China

We derive a Cooper-Frye type spin polarization formula for Dirac fermions at local thermal equilibrium described by a grand canonical ensemble specified by temperature, fluid velocity, chemical potential, and spin potential. We discuss the physical meaning of different contributions to spin polarization and compare them with previous work. The present formula provides machinery to convert the spin potential computed in, e.g., relativistic spin hydrodynamics to the spin polarization observable in,e.g., heavy-ion collisions.

关键词： spin polarization local equilibrium spin kinetic theory

A Two-Dimensional Approach to Iterative Learning Control with Randomly Varying Trial Lengths

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Journal of Systems Science & Complexity 2020年第3期33卷 685-705页

作者： liu chen SHEN Dong WANG Jinrong College of Information Science and Technology Beijing University of Chemical TechnologyBeijing 100029China School of Mathematics Renmin University of ChinaBeijing 100872China Department of Mathematics Guizhou UniversityGuiyang 550025China School of Mathematical Sciences Qufu Normal UniversityQufu 273165China

In this paper,iterative learning control(ILC)is considered to solve the tracking problem of time-varying linear stochastic systems with randomly varying trial *** the two-dimensional Kalman filtering technique,the authors can establish a recursive framework for designing the learning gain matrix along both time and iteration axes by optimizing the trace of input error covariance *** is strictly proved that the input error converges to zero asymptotically in mean square sense and thus the tracking error covariance *** extensions to that prior distribution of nonuniform trial lengths is unknown are also investigated with an asymptotical estimation *** simulations are provided to verify the effectiveness of the proposed framework.

关键词： Iterative learning control Kalman filtering recursive estimation varying trial lengths