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Blast Protection Shelter by Using Hollow Steel Filled with Recycled Concrete

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Transactions of Tianjin University 2008年第6期14卷 426-429页

作者： LI Jianchun, HUANG xin HUANG xin ma Guowe School of Civil and Environmental Engineering Nanyang Technological University Singapore 639798

Under extreme loading condition,a shelter will provide a safe place to protect people from injury caused by blast wave and *** order to save resource and reuse waste materi-als,a new design concept for blast protection shelter was *** new construction was composed of I-section steel panel or C-channel steel panel filled with recycled concrete *** compaction process of the recycled concrete aggregate filled in the steel construction was ex-perimentally investigated.A single storey shelter based on the proposed design concept was nu-merically simulated by using LS-DYNA *** the 3D numerical model,three walls were de-signed using I-section steel and one wall using C-channel steel,and all of the four walls were filled with recycled concrete *** penetration analysis was done by using *** penetration tests were also carried out by using a gas *** is found that the proposed shelter based on the design concept is effective for blast protection.

关键词： hollow steel panel recycled concrete aggregate shelter LS-DYNA simulation

Security Architecture on the Trusting Internet of Things

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Journal of Electronic Science and Technology 2011年第4期9卷 364-367页

作者： Bing Zhang xin-xin ma Zhi-Guang Qin with JiuZhou Co. with 78046 Unit of PLA with the Department of Computer Science and Engineering University of Electronic Science and Technology of China

By analyzing existed Internet of Things＇ system security vulnerabilities, a security architecture on trusting one is constructed. In the infrastructure, an off-line identity authentication based on the combined public key （CPK） mechanism is proposed, which solves the problems about a mass amount of authentications and the cross-domain authentication by integrating nodes＇ validity of identity authentication and uniqueness of identification. Moreover, the proposal of constructing nodes＇ authentic identification, valid authentication and credible communication connection at the application layer through the perception layer impels the formation of trust chain and relationship among perceptional nodes. Consequently, a trusting environment of the Internet of Things is built, by which a guidance of designing the trusted one would be provided.

关键词： Combined public key elliptic curves cryptography Internet of Things radio frequency identification security system trusting system.

Robust stability and stabilization of uncertain stochastic systems involving jump random noise

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Robust stability and stabilization of uncertain stochastic s...

Stochastic stability of Hopfield neural networks disturbed by more general noises

第三十九届中国控制会议

作者： Bo Song Heng Zhou Peng Xu xin-xin ma School of Electrical Engineering and Automation Jiangsu Normal University

Stochastic system involving jump random noise（RN） is considered in this paper. By employing Poisson process（PP）to depict jump RN, this paper investigates the robust stability and stabilization problem of uncertain stochastic systems involving Poisson process（SSIPPs）. Firstly, noting that the model of the SSIPP is a stochastic differential equation（SDE） involving semimartingale, we utilize stochastic analysis to transform the SSIPP into an SDE involving martingale so that we can use martingale theory to investigate such kind of stochastic systems（SSs）. Secondly, on basis of stochastic theory and Lyapunov theory, this paper presents a robust stability criterion and designs a state feedback controller for the uncertain SSIPP. Finally, a numerical example is given to check the effectiveness of the derived results.

关键词： Stochastic system Robust stability Stabilization

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Stochastic stability of Hopfield neural networks disturbed b...

Research status and prospects of the fractal analysis of metal material surfaces and interfaces

第32届中国控制与决策会议

作者： Bo Song xin-xin ma Feng Lin Heng Zhou School of Electrical Engineering and Automation Jiangsu Normal University

This paper addresses the stability analysis of Hopfield neural networks（HNNs） disturbed by more general noises,which consist of continuous and jump random noise（JRN）.By introducing B rownian motion（BM） and Poisson process（PP） to describe continuous and jump random noises respectively,this paper presents the model of this kind of stochastic ***,this paper utilizes semi-martingale theory to transform the Ito formula into an equivalent *** on this,this paper proposes a stability condition by the linear matrix inequality（LMI）.Finally,a numerical example is provided to show the effectiveness of the condition.

关键词： Hopfield neural networks continuous random noise jump random noise

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International Journal of Minerals,Metallurgy and materials 2025年第1期32卷 20-38页

作者： Qinjin Dai Xuefeng Liu xin ma Shaojie Tian Qinghe Cui Beijing Advanced Innovation Center for materials Genome Engineering University of Science and Technology BeijingBeijing 100083China Beijing Laboratory of Metallic materials and Processing for Modern Transportation University of Science and Technology BeijingBeijing 100083China Laboratory for Advanced materials Processing of Ministry of Education University of Science and Technology BeijingBeijing 100083China School of Mechanical and Electrical Engineering Xinjiang Institute of EngineeringUrumqi 830023China

As a mathematical analysis method,fractal analysis can be used to quantitatively describe irregular shapes with self-similar or self-affine *** analysis has been used to characterize the shapes of metal materials at various scales and *** methods make it difficult to quantitatively describe the relationship between the regular characteristics and properties of metal material surfaces and ***,fractal analysis can be used to quantitatively describe the shape characteristics of metal materials and to establish the quantitative relationships between the shape characteristics and various properties of metal *** the perspective of two-dimensional planes and three-dimensional curved surfaces,this paper reviews the current research status of the fractal analysis of metal precipitate interfaces,metal grain boundary interfaces,metal-deposited film surfaces,metal fracture surfaces,metal machined surfaces,and metal wear *** relationship between the fractal dimensions and properties of metal material surfaces and interfaces is *** from three perspectives of fractal analysis,namely,research scope,image acquisition methods,and calculation methods,this paper identifies the direction of research on fractal analysis of metal material surfaces and interfaces that need to be *** is believed that revealing the deep influence mechanism between the fractal dimensions and properties of metal material surfaces and interfaces will be the key research direction of the fractal analysis of metal materials in the future.

关键词： metal material surfaces and interfaces fractal analysis fractal dimension homogeneity

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基于上凸序列的GM(1,1)模型及其优化

数学的实践与认识 2017年第19期47卷 257-264页

作者：孔新海马新广安职业技术学院智能制造与能源工程学院四川广安638000 西南科技大学理学院四川绵阳621010

针对GM(1,1)模型对上凸序列建模时会出现误差较大的情况进行了研究.首先分析了GM(1,1)对上凸序列建模时的残差变化规律,然后通过分析得出了残差变化规律的精确描述,同时证明了残差序列的几个性质定理.基于残差序列的性质定理提出了基于... 详细信息

针对GM(1,1)模型对上凸序列建模时会出现误差较大的情况进行了研究.首先分析了GM(1,1)对上凸序列建模时的残差变化规律,然后通过分析得出了残差变化规律的精确描述,同时证明了残差序列的几个性质定理.基于残差序列的性质定理提出了基于上凸序列建模的残差修正GM(1,1)模型.将新模型与多种改进的GM(1,1)模型进行对比,实证结果表明新模型具有很高的模拟预测精度,并且适用于一切上凸序列的建模.

关键词：上凸序列 GM(1,1)模型残差修正

Multi-receptive field interaction network for shape from polarization

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Science China(Information Sciences) 2025年第1期 394-395页

作者： Yini PENG Rui LIU Zhiyuan ZHANG Zhongyuan WANG Jiayi ma xin TIAN Electronic Information School Wuhan University Computer Science School Wuhan University Wuhan Institute of Quantum Technology

Shape from polarization (SfP) method can use the polarization information in reflected light to estimate the surface normal of the target,which can further reconstruct the shape of the *** a simple image capture process,it can use low-cost equipment to meet a high precision imaging requirement,which can be used in remote scenes and other applications.

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Vector meson's spin alignments in high energy reactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 5-20页

作者： Jin-Hui Chen Zuo-Tang Liang Yu-Gang ma xin-Li Sheng Qun Wang Key Laboratory of Nuclear Physics and Ion-beam Application (MoE) Institute of Modern PhysicsFudan University Institute of Frontier and Interdisciplinary Science Key Laboratory of Particle Physics and Particle Irradiation (MOE)Shandong University INFN-Firenze Department of Modern Physics University of Science and Technology of China School of Mechanics and Physics Anhui University of Science and Technology

The global spin alignment of vector mesons has been observed by the STAR collaboration at the Relativistic Heavy Ion Collider （RHIC） at Brookhaven National Laboratory （BNL）.It provides a unique opportunity to probe the correlation between the polarized quark and antiquark in the strongly coupled quark-gluon plasma （sQGP） produced in relativistic heavy ion collisions,opening a new window to explore the properties of s *** addition,spin alignments of vector mesons have also been observed in other high-energy particle collisions such as e+e-annihilations at high energies where hadron production is dominated by quark fragmentation *** results obtained are quite different from those obtained in heavy ion collisions where quark coalescence/combination mechanism dominates suggesting strong dependence on hadronization *** comprehensive studies in different hadronization processes are *** this article,we present a brief review of theoretical and experimental advances in the study of vector meson’s spin alignments in a variety of high-energy particle collisions,with emphasis on hadronization mechanisms.

关键词： vector meson spin alignment global polarization relativistic heavy ion collisions fragmentation

Simultaneous Determination of Silybin A and Silybin B in Rat Plasma and Pharmacokinetic Study

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Chinese Herbal Medicines 2011年第4期3卷 304-309页

作者： CHU Yang,LI Wei,LI Zhi-wen,LI xin-xin,ma Xiao-hui,ZHOU Shui-ping,ZHU Yong-hong Department of Pharmacology,Tianjin Tasly Institute,Tianjin 300410,China Department of Pharmacology Tianjin Tasly Institute Tianjin 300410 China

Objective To investigate the bioavailability and pharmacokinetics of silybin A and silybin B in rats,respectively. Methods Following iv and ig administration of silybin to 20 Wistar rats,the plasma samples were collected at different time points up to 12 *** pretreatment was involved in one-step protein precipitation with acetonitrile. Silybin A and silybin B were simultaneously determined by LC-MS/*** After ig dosing silybin 28,56,and 112 mg/kg to rats,the t1/2βvalues were 5.48,5.08,and 5.73 h for silybin A,and 4.56,4.12,and 5.53 h for silybin B; The Cmax were 674.3,1349.4,and 2042.5 ng/mL for silybin A,and 671.0,1365.4,and 2066.2 ng/mL for silybin B; The Tmax were 0.20,0.23,and 0.20 h for silybin A,and 0.20,0.23,and 0.20 h for silybin B;The AUC were 454.4, 845.9,and 1219.5 h·ng/mL for silybin A,and 432.0,817.1,and 1153.6 h·ng/mL for silybin *** absolute bioavailabilities of silybin A and silybin B were 2.86%and 1.93%,*** Silybin A and silybin B have very low bioavailability after ig administration,and there is no significant difference in the pharmacokinetic parameters between silybin A and silybin B,which indicates that the two diastereoisomers have similar pharmacokinetic behavior in rats.

关键词： bioavailability LC-MS/MS pharmacokinetics silybin A silybin B