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A Novel Method for Synchronization Parameters Automatic Extraction in Computer Electromagnetic Eavesdropping

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Chinese Journal of Electronics 2019年第2期28卷 370-376页

作者： xu Yanyun Institute of Information Engineering Chinese Academy of Sciences

Electromagnetic compromising emanations are potential threat to computer security. Computer emits energy in the form of electromagnetic wave which includes the processed information. The electromagnetic wave can be received and decoded in the distance, so the unintended information leakage occurs. In this paper,the automatic information reconstruction for computer electromagnetic eavesdropping is studied. This paper attempts to combine simple digital signal processing method for the first time to extract electromagnetic leakage information. The performance of the new method is presented numerically and experimentally. Compared with other algorithms, this method has strong practicability and reliability. Under complex electromagnetic environment,the synchronization parameters can be extracted and the information can be reconstructed automatically, quickly and reliably.

关键词： Electromagnetic compromising emanations electromagnetic eavesdropping synchronization parameters extraction information reconstruction

PIMOL:A New Semi-analytical Method Based on the Finite Difference Method of Lines and the Precise Integration Method

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Acta Mechanica Solida Sinica 2020年第3期33卷 381-391页

作者： Yongjun xu Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China

The aim of this paper is to introduce a new semi-analytical method,namely PIMOL(precise integration method of lines,the parametric finite difference method of lines based on the precise integration method),which is developed and used to solve the ordinary differential equation(ODEs)systems based on the finite difference method of lines and the precise integration method(PIM).Two examples of Poisson^equation problems are given:a boundary value problem and an ODE eigenvalue *** PIMOL can effectively reduce a semi-discrete ODE problem to a linear algebraic matrix *** results show that the PIMOL is a powerful method.

关键词： PIMOL ODE FDMOL PIM Poisson’s equation Semi-analytical Semi-discrete

PIMOL: The Finite Difference Method of Lines Based on the Precise Integration Method for an Arbitrary Irregular Domain

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Acta Mechanica Solida Sinica 2020年第6期33卷 823-835页

作者： Yongjun xu Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China

The aim of this paper is to introduce a new semi-analytical method named precise integration method of lines(PIMOL),which is developed and used to solve the ordinary differential equation(ODE)systems based on the finite difference method of lines and the precise integration *** irregular domain problem is mainly discussed in this *** classical examples of Poisson^equation problems are given,including one regular and two irregular domain *** PIMOL reduces a semi-discrete ODE problem to a linear algebraic matrix equation and does not require domain mapping for treating the irregular domain *** results show that the PIMOL is a powerful method.

关键词： PIMOL ODEs FDMOL PIM Poisson’s equation problems Semi-analytical(discrete) Irregular domain

静电纺丝聚偏氟乙烯压电仿生骨膜的生物相容性评价

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中国组织工程研究 2025年第4期29卷 730-737页

作者：赵帅李冬瑶魏岁艳曹怡静许燕徐国强青岛市即墨区人民医院口腔科山东省青岛市266200 新疆乌鲁木齐市口腔医院新疆维吾尔自治区乌鲁木齐市830000 新疆医科大学第一附属医院(附属口腔医院)口腔放射科新疆维吾尔自治区乌鲁木齐市830054 南昌大学附属口腔医院(黏膜牙周科) 江西省南昌市330000 新疆大学机械工程学院新疆维吾尔自治区乌鲁木齐市830047 新疆医科大学第一附属医院(附属口腔医院)口腔修复种植科新疆维吾尔自治区乌鲁木齐市830054 新疆维吾尔自治区口腔医学研究所新疆维吾尔自治区乌鲁木齐市830054

背景:课题组前期研究发现,静电纺丝聚偏氟乙烯仿生骨膜具有良好的细胞相容性,但其生物相容性尚不清楚。目的:评价掺Zn2+、Mg2+聚偏氟乙烯仿生骨膜的生物相容性。方法:取前期研究采用静电纺丝技术制备的聚偏氟乙烯、掺1%Zn2+聚偏氟乙烯、... 详细信息

背景:课题组前期研究发现,静电纺丝聚偏氟乙烯仿生骨膜具有良好的细胞相容性,但其生物相容性尚不清楚。目的:评价掺Zn2+、Mg2+聚偏氟乙烯仿生骨膜的生物相容性。方法:取前期研究采用静电纺丝技术制备的聚偏氟乙烯、掺1%Zn2+聚偏氟乙烯、掺1%Mg2+聚偏氟乙烯、掺1%Zn2++1%Mg2+聚偏氟乙烯仿生骨膜,制备各组仿生骨膜浸提液,选择SD大鼠为实验对象,进行溶血实验、短期全身毒性实验、热源实验,选择豚鼠为实验对象,进行皮肤致敏实验,检测4组仿生骨膜的生物相容性。结果与结论:①溶血实验结果显示,掺1%Zn2+聚偏氟乙烯、掺1%Mg2+聚偏氟乙烯、掺1%Zn2++1%Mg2+聚偏氟乙烯仿生骨膜及聚偏氟乙烯浸提液的溶血率分别为(0.130±0.013)%,(0.149±0.020)%,(0.466±0.018)%,(0.037±0.018)%,符合生物材料血液相容性性标准;②短期全身毒性实验结果显示,4组仿生骨膜浸提液灌胃干预后未引起SD大鼠体质量减轻、摄食量变化及呼吸困难等毒性体征,对大鼠的主要脏器无毒性作用;③热源实验结果显示,掺1%Zn2+聚偏氟乙烯、掺1%Mg2+聚偏氟乙烯、掺1%Zn2++1%Mg2+聚偏氟乙烯及聚偏氟乙烯仿生骨膜浸提液干预后,SD大鼠体温升高值分别为(0.133±0.058),(0.100±0.010),(0.300±0.010),(0.300±0.017)℃,均小于0.6℃,体温升高度数总和均小于1.4℃;④皮肤致敏实验结果显示,4组仿生骨膜浸提液干预后豚鼠皮下未见红斑与水肿。结果表明:聚偏氟乙烯与掺Zn2+、Mg2+聚偏氟乙烯仿生骨膜具有良好的生物相容性。

关键词：静电纺丝聚偏氟乙烯仿生骨膜锌离子镁离子生物相容性

Bayesian Inference of Nucleus Resonance and Neutron Skin

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原子能科学技术 2023年第4期57卷 729-742页

作者： xu Jun School of Physics Science and Engineering Tongji UniversityShanghai 200092China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China

In this proceeding,some highlight results on the constraints of the nuclear matter equation of state(EOS)from the data of nucleus resonance and neutron-skin thickness using the Bayesian approach based on the Skyrme-Hartree-Fock model and its extension have been ***,the anti-correlation and positive correlations between the slope parameter and the value of the symmetry energy at the saturation density under the constraint of the neutron-skin thickness and the isovector giant dipole resonance have been discussed ***’s shown that the Bayesian analysis can help to find a compromise for the“PREXII puzzle”and the“soft Tin puzzle”.The possible modifications on the constraints of lower-order EOS parameters as well as the relevant correlation when higher-order EOS parameters are incorporated as independent variables have been further *** a given model and parameter space,the Bayesian approach serves as a good analysis tool suitable for multi-messengers versus multi-variables,and is helpful for constraining quantitatively the model parameters as well as their correlations.

关键词： Bayesian inference nuclear matter equation of state nucleus resonance neutron-skin thickness

Critical Review on cathode-electrolyte Interphase Toward High-Voltage Cathodes for Li-Ion Batteries

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Nano-Micro Letters 2022年第10期14卷 197-218页

作者： Jijian xu Department of Chemical and Biomolecular Engineering University of Maryland College ParkCollege ParkMD 20742USA

The thermal stability window of current commercial carbonate-based electrolytes is no longer sufficient to meet the ever-increasing cathode working voltage requirements of high energy density lithium-ion *** is crucial to construct a robust cathode-electrolyte interphase(CEI)for high-voltage cathode electrodes to separate the electrolytes from the active cathode materials and thereby suppress the side ***,this review presents a brief historic evolution of the mechanism of CEI formation and compositions,the state-of-art characterizations and modeling associated with CEI,and how to construct robust CEI from a practical electrolyte design *** focus on electrolyte design is categorized into three parts:CEI-forming additives,anti-oxidation solvents,and lithium ***,practical considerations for electrolyte design applications are *** review will shed light on the future electrolyte design which enables aggressive high-voltage cathodes.

关键词： Cathode-electrolyte interphase High-voltage cathodes Interfacial chemistry Electrolyte design Batteries.

Fully Coupled Forward-Backward Stochastic Functional Differential Equations and Applications to Quadratic Optimal Control

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Journal of Systems Science & Complexity 2020年第6期33卷 1886-1902页

作者： xu Xiaoming Institute of Finance and Statistics School of Mathematical SciencesNanjing Normal UniversityNanjing210023China

This paper considers the fully coupled forward-backward stochastic functional differential equations(FBSFDEs) with stochastic functional differential equations as the forward equations and the generalized anticipated backward stochastic differential equations as the backward equations. The authors will prove the existence and uniqueness theorem for FBSFDEs. As an application, we deal with a quadratic optimal control problem for functional stochastic systems, and get the explicit form of the optimal control by virtue of FBSFDEs.

关键词： Forward-backward stochastic functional differential equation functional stochastic system generalized anticipated backward stochastic differential equation quadratic optimal control stochastic functional differential equation

Phase Behaviors of Soft-core Particle Systems

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Chinese Journal of Polymer Science 2019年第11期37卷 1065-1082页

作者： Ning xu Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Soft Matter Chemistry and Department of Physics University of Science and Technology of China

This paper reviews some of our recent works on phase behaviors of particulate systems with a soft-core interaction potential. The potential is purely repulsive and bounded, i.e., it is finite even when two particles completely overlap. The one-sided linear spring (harmonic) potential is one of the representatives. This model system has been successively employed to study the jamming transition, i.e., the formation of rigid and disordered packings of hard particles, and establish the jamming physics. This is actually based on the "hard" aspect of the potential, because at low densities and when particle overlap is tiny the potential resembles the hard sphere limit. At high densities, the potential exhibits its "soft" aspect: with the increase of density, there are successive reentrant crystallizations with many types of solid phases. Taking advantage of the dual nature of the potential, we investigate the criticality of the jamming transition from different perspectives, extend the jamming scenario to high densities, reveal the novel density evolution of two-dimensional melting, and find unexpected formation of quasicrystals. It is surprising that such a simple potential can exhibit so rich and unexpected phenomena in phase transitions. The phase behaviors discussed in this paper are also highly regarded in polymer science, which may thus shed light on our understanding of polymeric systems or inspire new ideas in studies of polymers.

关键词： Phase transitions Soft-core particles Jamming Two-dimensional melting Quasicrystals

纤维桩联合不同冠部修复方式修复穿髓型非龋性颈部缺损牙体的力学分析

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中国组织工程研究 2025年第4期29卷 866-871页

作者：陈倚珑张旭李红首都医科大学附属北京口腔医院北京市100050 北京市房山区良乡医院北京市102401

背景:使用纤维桩修复穿髓型非龋性颈部缺损可以改变牙齿的应力分布,显著降低患牙折裂风险,但关于纤维桩改善牙体抗折性的力学机制及穿髓型非龋性颈部缺损的最佳冠部修复方式尚有争论。目的:综述纤维桩修复穿髓型非龋性颈部缺损后的应力... 详细信息

背景:使用纤维桩修复穿髓型非龋性颈部缺损可以改变牙齿的应力分布,显著降低患牙折裂风险,但关于纤维桩改善牙体抗折性的力学机制及穿髓型非龋性颈部缺损的最佳冠部修复方式尚有争论。目的:综述纤维桩修复穿髓型非龋性颈部缺损后的应力分布模式,在各种受力状态下的抗折能力与断裂模式,以及纤维桩联合不同冠部修复方式的最新研究进展。方法:应用计算机在PubMed和中国知网数据库中检索2008年9月至2023年9月发表的相关文献,英文检索词为“non-carious cervical lesions,endodontically treated teeth restoration,endodontically treated teeth stress distribution”,中文检索词为“非龋性颈部缺损,根管治疗后牙体修复,根管治疗后牙齿应力分布”,最终纳入56篇文献进行分析。结果与结论:穿髓型非龋性颈部缺损根管治疗后,应用纤维桩修复可部分改善牙齿颈部应力,同时不会增加牙根纵裂的风险;使应力分布更加均匀,提高牙齿的抗折性。使用纤维桩修复的非龋性颈部缺损牙齿若折断,其断裂模式显示出有利的、可恢复的或可修复的断裂模式。纤维桩联合瓷贴面或贴面式嵌体可能会成为修复穿髓型非龋性颈部缺损的一种较理想微创修复方法。

关键词：非龋性颈部缺损穿髓型三维有限元分析纤维桩冠部修复应力分布抗折性折断模式