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基于多信息体素的三角网格模型距离场算法

计算机集成制造系统 2025年第1期31卷 117-125页

作者：黄江张李超王森林覃林史玉升华中科技大学材料科学与工程学院湖北武汉430074

基于三维实体模型的符号距离场可高效进行诸如布尔运算和随形梯度点阵结构生成等三角网格模型难以处理的操作,在增材制造领域有着重要的用途,但复杂三角网格模型符号距离场的生成效率非常低。提出了基于多信息体素的三角网格模型精确符... 详细信息

基于三维实体模型的符号距离场可高效进行诸如布尔运算和随形梯度点阵结构生成等三角网格模型难以处理的操作,在增材制造领域有着重要的用途,但复杂三角网格模型符号距离场的生成效率非常低。提出了基于多信息体素的三角网格模型精确符号距离场和混合距离场的概念及其生成算法。精确距离场算法将包含三角网格模型的有限空间平行于坐标轴等距分割成多个体素,对三维体素空间进行快速距离变换,生成粗糙符号距离场,依据粗糙符号距离场将相关三角面片划分到每个体素中,过滤无关的三角形,生成精确符号距离场,在效率上有百倍的提升;混合距离场算法利用粗糙符号距离场选择性构建边界附近的精确符号距离场,空间内其他位置用粗糙符号距离场表示,在保证内部符号距离场分辨率的前提下的提高了距离场的生成效率。最后通过生成随形的梯度点阵结构对算法进行验证。

关键词：符号距离场三角网格模型增材制造距离变换三周期极小曲面

锯齿形氮化铝纳米带负阻器件电子输运性质研究

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原子与分子物理学报 2025年第2期42卷 85-90页

作者：黄绛雪黄启俊何进王豪常胜武汉大学物理科学与技术学院武汉430072

低维纳米带材料因为其结构的特异性而呈现出新奇的物理性质.修饰纳米带的边缘能够调制其电子性质.本文运用基于密度泛函理论(DFT)的第一性原理计算方法,探究了锯齿形氮化铝纳米带(ZAlNNR)单边氟化、单边氯化以及单边氢化的电子结构和输... 详细信息

低维纳米带材料因为其结构的特异性而呈现出新奇的物理性质.修饰纳米带的边缘能够调制其电子性质.本文运用基于密度泛函理论(DFT)的第一性原理计算方法,探究了锯齿形氮化铝纳米带(ZAlNNR)单边氟化、单边氯化以及单边氢化的电子结构和输运特性.研究表明:锯齿型氮化铝纳米带可以通过以上手段实现能带结构的半导体-金属转换.计算电子输运特性,我们发现三种边缘修饰的器件均呈现出负微分电阻效应,其中AlN-F器件有最大峰谷电流比(PVCR),达到了1.78×10^(7),是硅烯纳米器件以及黑磷纳米器件的10^(6)倍.值得一提的是,相比于H-AlN-Cove纳米器件,AlN-F器件能够在更小的偏压范围内实现高PVCR.该结果为锯齿形氮化铝纳米带在低功耗纳米器件中的应用提供了广泛的前景.

关键词：锯齿形氮化铝纳米带电子输运负微分电阻效应第一性原理

维普期刊数据库博看期刊

职业教育数字化转型能力成熟度模型与评估方法

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远程教育杂志 2025年第1期43卷 75-84页

作者：邱飞岳张彭丽袁霄黄江郭海东浙江工业大学教育学院浙江杭州310007 浙江省教育技术中心发展研究部浙江杭州310012

教育数字化转型是推动全球教育革新和重塑竞争优势的重要方向。职业教育,作为经济社会发展的关键动力,正在主动求变、积极应变。为了科学有效地评估职业院校的数字化转型程度及能力,研究基于成熟度模型视角,提出了切实可行的评估方案。... 详细信息

教育数字化转型是推动全球教育革新和重塑竞争优势的重要方向。职业教育,作为经济社会发展的关键动力,正在主动求变、积极应变。为了科学有效地评估职业院校的数字化转型程度及能力,研究基于成熟度模型视角,提出了切实可行的评估方案。具体而言,研究首先从院校个体、群体标杆、职教蓝图三个层面展开价值探索,系统剖析了成熟度模型的构成要素及教育数字化转型成熟度模型的共性特征;其次,结合我国职业教育数字化发展特色,构建了一个包含五个成熟度等级、四个能力要素、九个能力域和二十五个能力子域的职业教育数字化转型能力成熟度模型;最后,详细阐述了评估方法与实施流程。该模型旨在帮助职业院校评估自身数字化转型能力成熟度,识别发展瓶颈,进而采取针对性的措施提升数字化水平,以更好地适应现代职业教育高质量发展的需求。

关键词：职业教育数字化能力成熟度模型成熟度等级评估方法与流程

Effects of Self-gravity on Mass-loss of the Post-impact Super-Earths

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Research in Astronomy and Astrophysics 2022年第4期22卷 36-41页

作者： jiang huang Wei Zhong Cong Yu School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China CSST Science Center for the Guangdong-Hong Kong-Macao Greater Bay Area Zhuhai 519082China State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacaoChina

Kepler’s observations show most of the exoplanets are *** formation of a super-Earth is generally related to the atmospheric mass loss that is crucial in the planetary structure and *** shock driven by the giant impact will heat the planet,resulting in the atmosphere *** focus on whether self-gravity changes the efficiency of mass *** self-gravity,if the impactor mass is comparable to the envelope mass,there is a significant *** radiative-convective boundary will shift inward by *** the temperature and envelope mass increase,the situation becomes more prominent,resulting in a heavier ***,the impactor mass will increase to motivate the significant mass loss,as the self-gravity is *** the increase of envelope mass,the self-gravity is particularly important.

关键词： planets and satellites:atmospheres planets and satellites:physical evolution methods:numerical

Polaron-pair-dependent equivalent circuit parameters of organic solar cells based on CuPc and C_(60)

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Chinese Science Bulletin 2010年第13期55卷 1317-1324页

作者： huang jiang YU JunSheng LIN Hui jiang YaDong State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Information University of Electronic Scienceand Technology of China (UESTC) Chengdu 610054 China

We present the current-voltage characteristics of organic solar cells based on single and double heterojunction of copper phthalocyanine (CuPc) and C60 by introducing a constant JP instead of photo-current density Jph to represent the density of polaron-pairs generated from excitons at D/A interface. A diode Dext models polaron-pair dissociation, and a diode Drec stands for loss due to polaron-pair recombination. The photovoltaic response under AM 1.5 solar illumination at an intensity of 100 mW/cm2 is parameterized and modeled using the improved equivalent circuit model developed for inorganic pn-junction solar cells. The instinct mechanisms including dissociation, recombination of polaron-pairs and charge carrier collection process are explained by introducing Jph/JP as the dissociation rate of polaron-pairs and |J|/Jph as charge carrier application efficiency ηCA. Especially, we reveal the optimization mechanism for the fill factor FF and series resistance RS of organic solar cells.

关键词：有机太阳能电池极化子等效电路参数 C60 酞菁铜电流电压特性等效电路模型电流密度

An improved and scalable process for 3,8-diazabicyclo[3.2.1]-octane analogues

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Chinese Chemical Letters 2011年第5期22卷 523-526页

作者： Long jiang huang Da Wei Teng College of Chemical Engineering Qingdao University of Science & Technology Qingdao 266042 China

An improved and scalable process for substituted 3,8-diazabicyclo[3.2.1]octane was developed.N-Benzyl-2,5-dicarbethoxy-pyrrolidine 2 was reduced to N-benzyl-2.5-dihydroxymethylpyrrolidine 9 and subsequently debenzylated to afford N-Boc-2,5- dihydroxymethylpyrrolidine *** mesylation of the diol 10 and cyclization with benzylamine,a diversity of scaffold,3,8- diazabicyclo[3.2.1]octane analogue 12 was obtained in a total yield of 42%in five steps.

关键词： 3 8-Diazabicyclo[3.2.1]octane:Scaffold Process development

Precise Asymptotics in the Baum-Katz and Davis Laws of Large Numbers of ρ-mixing Sequences

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Acta Mathematica Sinica,English Series 2005年第5期21卷 1057-1070页

作者： Wei huang Ye jiang Li Xin ZHANG Department of Mathematics Zhejiang University Hangzhou 310028 P. R. China

Let {X,Xn;n ≥ 1} be a strictly stationary sequence of ρ-mixing random variables with mean zeros and finite variances. Set Sn =∑k=1^n Xk, Mn=maxk≤n｜Sk｜,n≥*** limn→∞ESn^2/n=：σ^2〉0 and ∑n^∞=1 ρ^2/d（2^n）〈∞,where d=2 if 1≤r〈2 and d〉r if r≥*** prove that if E｜X｜^r 〈∞,for 1≤p〈2 and r〉p,then limε→0ε^2（r-p）/2-p ∑∞n=1 n^r/p-2 P{Mn≥εn^1/p}=2p/r-p ∑∞k=1（-1）^k/（2k＋1）^2（r-p）/（2-p）E｜Z｜^2（r-p）/2-p,where Z has a normal distribution with mean 0 and variance σ^2.

关键词： ρ-mixing random variable Tail probabilities Baum-Katz law Davis law

Resistance spot welding of Ti_(40)Zr_(25)Ni_3Cu_(12)Be_(20) bulk metallic glass:experiments and finite element modeling

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Rare Metals 2017年第2期36卷 123-128页

作者： Gang Wang Yong-jiang huang Deodat Makhanlall Jun Shen School of Mechanical and Automotive Engineering Anhui Polytechnic University School of Materials Science and Engineering Harbin Institute of Technology

The use of resistance spot welding（RSW）technology for joining Ti40Zr25Ni3Cu12Be20 metallic glass was *** microstructure obtained from the welded BMG sample was *** without precipitates was prepared with welding current of 5.0 kA for 2cycles.A fully coupled thermal-electrical-mechanical finite element model（FEM） was developed to complement the experimental *** simulated results agree well with the *** effects of key process parameters such as welding current and welding time on the evolvement and microstructure of the weldment were determined and ***,the critical cooling rate for preserving the amorphous state in the weld fusion zone is determined to be approximately 1×10^3 K·s^-1.

关键词： Metallic glasses Simulations Resistance spot welding Cooling rate

The population and decay evolution of a qubit under the time-convolutionless master equation

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Chinese Physics B 2012年第1期21卷 222-225页

作者： huang jiang Fang Mao-Fa Liu Xiang Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education and Department of PhysicsHunan Normal UniversityChangsha 410081China

We consider the population and decay of a qubit under the electromagnetic environment. Employing the time- convolutionless master equation, we investigate the Markovian and non-Markovian behaviour of the corresponding perturbation expansion. The Jaynes-Cummings model on resonance is investigated. Some figures clearly show the different evolution behaviours. The reasons are interpreted in the paper.

关键词： Markovian non-Markovian time-convolutionless master equation