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Complete Convergence and Complete Moment Convergence for Martingale Diference Sequence

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Acta Mathematica Sinica,English Series 2014年第1期30卷 119-132页

作者： Xue Jun WANG shu he hu School of Mathematical Science Anhui University

In the paper,we investigate the complete convergence and complete moment convergence for the maximal partial sum of martingale diference ***,we get the Baum–Katz-type Theorem and Hsu–Robbins-type Theorem for marting... 详细信息

关键词： Martingale diference sequence complete convergence complete moment convergence Baum–Katz-type theorem

The Bahadur Representation for Sample Quantiles Under Dependent Sequence

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Acta Mathematicae Applicatae Sinica 2019年第3期35卷 521-531页

作者： Wen-zhi YANG shu-he hu Xue-jun WANG School of Mathematical Science Anhui University

On the one hand,we investigate the Bahadur representation for sample quantiles underφ-mixing sequence withφ(n)=O(n^-3)and obtain a rate as O(n-3/4 log n),*** the other hand,by relaxing the condition of mixing coeffi... 详细信息

关键词： Bahadur representation sample quantiles mixing sequence

Hajek-Rényi-type Inequality and Strong Law of Large Numbers for Some Dependent Sequences

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Acta Mathematicae Applicatae Sinica 2012年第3期28卷 495-504页

作者： Wen-zhi YANG Yan SheN shu-he hu Xue-jun WANG School of Mathematical Science Anhui UniversityHefei 230039China

Abstract In this paper, we get the H^jek-R^nyi-type inequalities for a pairwise NQD sequence, an L^T （r 〉 1） mixingale and a linear process, which have the concrete coefficients. In addition, we obtain the strong law of large numbers, strong growth rate and the integrability of supremum for the above sequences, which generalize and improve Corollary 2 for L^T（r 〉 1） mixingale of Hansen.

关键词： Hajek-Renyi-type inequality pairwise NQD sequence L^r(r 〉 1) mixingale linear process

Almost Sure Convergence Theorem and Strong Stability for Weighted Sums of NSD Random Variables

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Acta Mathematica Sinica,English Series 2013年第4期29卷 743-756页

作者： Yan SheN Xue Jun WANG Wen Zhi YANG shu he hu School of Mathematical Science Anhui University

In this paper, Kolmogorov-type inequality for negatively superadditive dependent （NSD） random variables is established. By using this inequality, we obtain the almost sure convergence for NSD sequences, which extends the corresponding results for independent sequences and negatively associated （NA） sequences. In addition, the strong stability for weighted sums of NSD random variables is studied.

关键词： Almost sure convergence negatively superadditive dependent strong stability

Some Convergence Properties for ψ-Mixing Sequences

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Journal of Mathematical Research and Exposition 2011年第3期31卷 443-450页

作者： Xue Jun WANG shu he hu Xiao Qin LI Wen Zhi YANG School of Mathematical Science Anhui University Anhui 230039 P. R. China

In this paper,we extend the Kolmogorov-type inequality to the case of ψ-mixing ***,we study the strong limit theorems for partial sums of ψ-mixing random *** a result,we extend the Khintchine-Kolmogorov-type converg... 详细信息

关键词： Kolmogorov-type inequality Khintchine-Kolmogorov-type convergence theorem strong law of large numbers.

乡村教师职业吸引力的实证研究——基于“离”与“留”强意愿的对比

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教师教育研究 2021年第1期33卷 51-59页

作者：何树虎邬志辉教育部人文社会科学重点研究基地东北师范大学中国农村教育发展研究院吉林长春130024

依据18省35县8086份调查问卷分析发现:"离"与"留"强意愿教师在人口特征分布、工作提供和空间特质满意度、个人志趣认可度方面均有显著差异。工资、工作条件以及公共服务最令教师不满;两个群体之间差距最为突出的是生活便利、家庭关涉、... 详细信息

依据18省35县8086份调查问卷分析发现:"离"与"留"强意愿教师在人口特征分布、工作提供和空间特质满意度、个人志趣认可度方面均有显著差异。工资、工作条件以及公共服务最令教师不满;两个群体之间差距最为突出的是生活便利、家庭关涉、领导公正、公共服务和设备正常度的满意度。回归显示,实际工资、工作条件、领导公正、晋职时长以及空间特征与教师持留任强意愿正向显著;领导公正、家庭关涉和公共服务的改善最有利于增强教师的留任强意愿。为改善乡村教师职业吸引力,需要探寻校社共同体建设以改善乡村教师的工作和生活条件,提高校长的领导能力并积极营造人文的学校管理环境,提升乡村教师的工资水平并合理分配绩效工资以缩小群体内差距。

关键词：乡村教师职业吸引力离任强意愿留任强意愿影响因素

3D Printing of Tough Hydrogel Scaffolds with Functional Surface Structures for Tissue Regeneration

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Nano-Micro Letters 2025年第2期17卷 18-45页

作者： Ke Yao Gaoying Hong Ximin Yuan Weicheng Kong Pengcheng Xia Yuanrong Li Yuewei Chen Nian Liu Jing he Jue Shi Zihe hu Yanyan Zhou Zhijian Xie Yong he State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Liangzhu Laboratory Zhejiang UniversityHangzhou 310027People’s Republic of China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province College of Mechanical EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Stomatology Hospital School of StomatologyZhejiang University School of MedicineHangzhou 310027People’s Republic of China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001People’s Republic of China Institute of Digital Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006People’s Republic of China

Hydrogel scaffolds have numerous potential applications in the tissue engineering ***,tough hydrogel scaffolds implanted in vivo are seldom reported because it is difficult to balance biocompatibility and high mechanical *** by Chinese ramen,we propose a universal fabricating method(printing-P,training-T,cross-linking-C,PTC&PCT)for tough hydrogel scaffolds to fill this ***,3D printing fabricates a hydrogel scaffold with desired structures(P).Then,the scaffold could have extraordinarily high mechanical properties and functional surface structure by cycle mechanical training with salting-out assistance(T).Finally,the training results are fixed by photo-cross-linking processing(C).The tough gelatin hydrogel scaffolds exhibit excellent tensile strength of 6.66 MPa(622-fold untreated)and have excellent ***,this scaffold possesses functional surface structures from nanometer to micron to millimeter,which can efficiently induce directional cell ***,this strategy can produce bionic human tissue with mechanical properties of 10 kPa-10 MPa by changing the type of salt,and many hydrogels,such as gelatin and silk,could be improved with PTC or PCT *** experiments show that this scaffold can effectively promote the new generation of muscle fibers,blood vessels,and nerves within 4 weeks,prompting the rapid regeneration of large-volume muscle loss injuries.

关键词： 3D printing Tough hydrogel scaffold Functional surface structure Tissue regeneration Biomaterials

Effect of Nb-V microalloying on the hot deformation behavior of medium Mn steels

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 360-368页

作者： Yumeng Wang Qinyi Guo Bin hu Haiwen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

The influence of Nb-V microalloying on the hot deformation behavior and microstructures of medium Mn steel(MMS)was investigated by uniaxial hot compression *** establishing the constitutive equations for simulating the measured flow curves,we successfully constructed deformation activation energy(Q)maps and processing maps for identifying the region of flow *** concluded the following consequences of Nb-V alloying for MMS.(i)The critical strain increases and the increment diminishes with the increasing deformation temperature,suggesting that NbC precipitates more efficiently retard dynamic recrystallization(DRX)in MMS compared with solute Nb.(ii)The deformation activation energy of MMS is significantly increased and even higher than that of some reported high Mn steels,suggesting that its ability to retard DRX is greater than that of the high Mn content.(iii)The hot workability of MMS is improved by narrowing the hot processing window for the unstable flow stress,in which fine recrystallized and coarse unrecrystallized grains are present.

关键词： medium manganese steel niobium-vanadium microalloying flow behavior dynamic recrystallization hot workability

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兰州市规模以上工业企业空间分布特征

兰州大学学报（自然科学版） 2018年第2期54卷 149-154页

作者：李晨曦陈兴鹏贾卓初雪贺舒琪胡孟然兰州大学资源环境学院兰州730000

梳理了2000-2015年兰州市规模以上工业企业数量变化,基于2000、2005、2013、2016年兰州市规模以上工业企业信息利用核密度、标准差椭圆等方法,揭示其空间分布格局以及时空动态演变.研究表明:数量上,2005年因兰州市国企改制,规模以上工... 详细信息

梳理了2000-2015年兰州市规模以上工业企业数量变化,基于2000、2005、2013、2016年兰州市规模以上工业企业信息利用核密度、标准差椭圆等方法,揭示其空间分布格局以及时空动态演变.研究表明:数量上,2005年因兰州市国企改制,规模以上工业企业数量急剧减少,在县(区)上的分布呈现出"金字塔"形;空间密度上,兰州市规模以上工业企业呈"城密县疏"的分布特征,主城区分布密度明显大于周边县域;时空演变上,兰州市规模以上工业企业空间分布主趋势为向东南方向移动,空间分布范围呈现明显缩小趋势.

关键词：工业企业空间布局时空演变兰州市