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Simulation design of fuze warhead system of air defense missile at very low altitude

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Journal of Systems Engineering and Electronics 2017年第3期28卷 572-584页

作者： Qi Zhao guangyu du Bin Zhang Yanbin Zhai Yuruo Shi Beijing Institute of Electronic System Engineering Beijing 100854China

A novel simulation method for fuze warhead system (FWS) at very low altitude flight is proposed to solve adaptability issues of the traditional one in the naval battle. Firstly, a simulation system framework is presented. Then the detailed implementation of a novel general fuze model, a novel sea echo model and a novel warhead dynamic effectiveness power field algorithm including the simulation system are presented. Finally, simulation results show good performance of the proposed method. The proposed method can simulate the echo signal when the complex fuze antennas detect target and the sea at the same time, and can truly reflect the target positions hit by the warhead fragments. The proposed method can solve the existing problems in the FWS simulation system.

关键词： fuze warhead system (FWS) simulation fuze warhead matching sea echo fragment trajectory drifting

类金刚石结构的分子动力学与人工神经网络耦合研究

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真空与低温 2024年第2期30卷 119-125页

作者：石湛杨陈志立杜广煜东北大学机械工程与自动化学院沈阳110819 长光卫星技术股份有限公司长春130102

掺氮类金刚石薄膜(N-DLC)可以改善零件表面的摩擦学性能,近些年来对N-DLC薄膜摩擦学特性研究的热度居高不下。由于计算资源与计算机运行时间有限,难以获得大量数据对N-DLC薄膜摩擦实验中界面结构演化规律进行微观模拟。为了探究分子动... 详细信息

掺氮类金刚石薄膜(N-DLC)可以改善零件表面的摩擦学性能,近些年来对N-DLC薄膜摩擦学特性研究的热度居高不下。由于计算资源与计算机运行时间有限,难以获得大量数据对N-DLC薄膜摩擦实验中界面结构演化规律进行微观模拟。为了探究分子动力学和人工神经网络交叉使用的可行性,全面了解N-DLC的摩擦学性质及规律,将BP神经网络、KELM神经网络引用到N-DLC的研究中。通过LAMMPS软件对N-DLC进行建模,将分子动力学模拟的数据作为人工神经网络的数据来源,对两种神经网络进行训练。利用验证样本对训练好的两种模型进行验证,将两种神经网络的预测结果进行对比,选出性能最佳的网络模型。结果表明,采用神经网络可以预测N-DLC内部杂化键的变化趋势,且效率更高,所需计算资源更少,在一定程度上可以代替分子动力学模拟结果,为人们提供进一步的分析判断。研究为促进分子动力学与人工神经网络两种方法的共同发展提供了有益探索。

关键词：类金刚石薄膜分子动力学神经网络计算资源预测模型

Asymmetric Hydrogenation of Phenanthridines with Chiral Boranes

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Chinese Journal of Chemistry 2024年第6期42卷 631-635页

作者： guangyu Cui Xiangqing Feng Haifeng du Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and FunctionInstitute of ChemistryChinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China

The asymmetric hydrogenation of N-heteroarenes provides an efficient method for the synthesis of optically active cyclic secondary *** this paper,we described an asymmetric hydrogenation of phenanthridines using a chiral mono-alkene-derived borane.A variety of dihydrophenanthridines were furnished in high yields with up to 93%*** current catalytic system was very sensitive for the steric hindrance of *** substituents at one phenyl group of phenanthridines were required to obtain the high *** large substituents on the carbon of the C=N bonds would diminish the reactivity sharply.

关键词： Asymmetric catalysis Hydrogenation Nitrogen heterocycles Phenanthridines Frustrated Lewis pairs Chiral boranes

Surface Energy and Work of Adhesion of Titanium Oxide Related Materials

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稀有金属材料与工程 2012年第S1期41卷 350-354页

作者： Lin Zeng Zhao Jikui du guangyu Wang Qing Ba Dechun Han Jing Liu Chunming Northeastern Univ Sch Mech Engn & Automat Shenyang 110004 Peoples R China Northeastern Univ Sch Met & Mat Shenyang 110004 Peoples R China Shenyang Pharmaceut Univ Shenyang 110016 Peoples R China

Surface energy and work of adhesion of titanium oxide related materials were *** oxide(TiOx) films were deposited by electron-beam evaporation system using TiO2 as a source *** films deposited by various thickness and growth rate were etched subsequently by different plasma using various gases like Ar and *** films were further modified by self-assembled monolayer(SAM)of silanes and ultraviolet(UV)*** surface modified TiOx films showed a wide range of water contact angles from 6.9°to 75.2°.The surface energies of Titania-related films and their work of adhesion with human blood were varied with different surface modification process.X-ray photoelectron spectroscopy(XPS)revealed that hydroxyl group present on the surface explains the hydrophilicity of the surface modified TiOx *** also suggest that some surface modified samples can provide an excellent hemocompatible surface from the estimated work of adhesion between the surface modified TiOx samples and human blood.

关键词： titanium oxide related film e-beam evaporation surface energy work of adhesion surface modification

Drilling Path Optimization Based on Particle Swarm Optimization Algorithm

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武汉理工大学学报 2006年第S2期28卷 763-766页

作者： ZHU guangyu ZHANG Weibo du Yuexiang (School of Mechanical Engineering & Automation,Fuzhou University,Fuzhou 350002,China, School of Mechanical Engineering & Automation Fuzhou UniversityFuzhou 350002China

This paper presents a new approach based on the particle swarm optimization (PSO) algorithm for solving the drilling path optimization problem belonging to discrete *** the standard PSO algorithm is not guaranteed to be global convergence or local convergence,based on the mathematical algorithm model,the algorithm is improved by adopting the method of generate the stop evolution particle over again to get the ability of convergence to the global optimization *** the operators are improved by establishing the duality transposition method and the handle manner for the elements of the operator,the improved operator can satisfy the need of integer coding in drilling path *** experiment with small node numbers indicates that the improved algorithm has the characteristics of easy realize,fast convergence speed,and better global convergence characteris- *** the new PSO can play a role in solving the problem of drilling path optimization in drilling holes.

关键词： particle swarm optimization drilling path optimization global convergence PSO

SUPERPOSITION OF STRESSES AND COMBINED STRUCTURE

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Science in China,Ser.B 1987年第8期30卷 875-887页

作者：乐光禹杜思清 Department of Geology Chengdu College of Geology

There are two kinds of superposition in the tectonic deformation of the crust, compound superposition and combined superposition. According to the principle of superposition of elastic theory, the tectonic stress field caused by two or more systems of external forces, acting on a block at the same time, equals superposition of the individual tectonic stress-field produced by the action of the forces applied individually. A group of formulas of stress superposition are given, and the superposition of homogeneous and inhomogeneous stress-fields are analysed. The geometric property and features of deformation of combined structures are explained in this paper.

关键词： SUPERPOSITION OF STRESSES AND COMBINED STRUCTURE

Cohomology groups of a new class of Kadison-Singer algebras

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Science China Mathematics 2024年第3期67卷 593-606页

作者： guangyu An Xing Cheng Jun Sheng School of Mathematics and Data Science Shaanxi University of Science and TechnologyXi’an 710021China

Let N be a maximal discrete nest on an infinite-dimensional separable Hilbert space H,ξ=∑^(∞)_(n=1)en/2n be a separating vector for the commutant N',E_(ξ)be the projection from H onto the subspace[Cξ]spanned by the vectorξ,and Q be the projection from K=H⊕H⊕H onto the closed subspace{(η,η,η)^(T):η∈H}.Suppose that L is the projection lattice generated by the projections(E_(ξ) 0 0 0 0 0 0 0 0),{(E 0 0 0 0 0 0 0 0):E∈N},(I 0 0 0 I 0 0 0 0) and *** show that L is a Kadison-Singer lattice with the trivial ***,we prove that every n-th bounded cohomology group H~n(AlgL,B(K))with coefficients in B(K)is trivial for n≥1.

关键词： Kadison-Singer algebra Kadison-Singer lattice derivation cohomology group

Material basis and pharmacodynamic mechanism of YangshenDingzhi granules in the intervention of viral pneumonia:Based on serum pharmacochemistry and network pharmacology

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Animal Models and Experimental Medicine 2024年第3期7卷 259-274页

作者： Huirong Xu Meiyue Dong Ruikun du Chengcheng Zhang Zinuo Chen guangyu Tian Qinghua Cui Kejian Li College of Traditional Chinese Medicine Shandong University of Traditional Chinese MedicineJinanChina Innovative Institute of Chinese Medicine and Pharmacy Shandong University of Traditional Chinese MedicineJinanChina Qingdao Academy of Chinese Medical Sciences Shandong University of Traditional Chinese MedicineQingdaoChina College of Pharmacy Shandong University of Traditional Chinese MedicineJinanChina

Background:YangshenDingzhi granules(YSDZ)are clinically effective in preventing and treating *** present study elucidates the underlying mechanism of YSDZ intervention in viral pneumonia by employing serum pharmacochemistry and network ***:The chemical constituents of YSDZ in the blood were examined using ultraperformance liquid chromatography-quadrupole/orbitrap high-resolution mass spectrometry(UPLC-Q-Exactive Orbitrap MS).Potential protein targets were obtained from the SwissTargetPrediction database,and the target genes associated with viral pneumonia were identified using GeneCards,DisGeNET,and Online Mendelian Inheritance in Man(OMIM)*** intersection of blood component-related targets and disease-related targets was determined using Venny ***-protein interaction networks were constructed using the STRING *** Metascape database was employed to perform enrichment analyses of Gene Ontology(GO)functions and Kyoto Encyclopedia of Genes and Genomes(KEGG)signaling pathways for the targets,while the Cytoscape 3.9.1 software was utilized to construct drug-component-disease-target-pathway ***,in vitro and in vivo experiments were performed to establish the therapeutic effectiveness of YSDZ against viral ***:Fifteen compounds and 124 targets linked to viral pneumonia were detected in *** these,MAPK1,MAPK3,AKT1,EGFR,and TNF play significant *** vitro tests revealed that the medicated serum suppressed the replication of H1N1,RSV,and SARS-CoV-2 ***,in vivo testing analysis shows that YSDZ decreases the viral load in the lungs of mice infected with RSV and ***:The chemical constituents of YSDZ in the blood may elicit therapeutic effects against viral pneumonia by targeting multiple proteins and pathways.

关键词： network pharmacology pharmacodynamical material basis serum pharmacochemistry viral pneumonia YangshenDingzhi granules

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接触网支柱对风速计测量的影响及对策

武汉大学学报（工学版） 2021年第5期54卷 454-460页

作者：杜广宇中铁第四勘察设计院集闭有限公司湖北武汉430063

在铁路灾害监测系统中,风速风向计的监测数据偏差严重影响了针对列车速度的决策。为了提高风速风向计监测的准确性,分析了风速风向计在接触网支柱上的安装方式,采用数值仿真方法研究了接触网支柱对风速测量值的影响,分析阐明了产生数据... 详细信息

在铁路灾害监测系统中,风速风向计的监测数据偏差严重影响了针对列车速度的决策。为了提高风速风向计监测的准确性,分析了风速风向计在接触网支柱上的安装方式,采用数值仿真方法研究了接触网支柱对风速测量值的影响,分析阐明了产生数据偏差的原因,并从硬件设计和软件分析的角度提出了减少和消除数据偏差的具体措施,以达到提高铁路灾害监测系统数据准确性的目的,为列车速度决策提供参考,从而提高铁路运行效率。

关键词：灾害监测系统风监测接触网支柱风速风向计