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一种QoS路由多目标遗传算法

通信学报 2004年第1期25卷 43-51页

作者：杨云徐永红李千目刘凤玉南京理工大学计算机科学与技术系

对网络拓扑结构和QoS路由指标进行了形式化分析,基于多目标规划问题,给出了QoS路由数学模型。针对这个模型,提出了一种QoS路由多目标遗传算法。通过仿真实验证明该算法是可行、有效率的。

关键词： QoS路由 QRMOGA算法多目标遗传算法多目标规划

The Non-Inclusive Diagnosability of Regular Graphs

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Journal of the Operations Research Society of China 2023年第4期11卷 891-910页

作者： Yu-Long Wei Tong-Tong Ding Min xu School of math.matical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex SystemsMinistry of EducationBeijing100875China Department of math.matics Taiyuan University of TechnologyTaiyuan030024China

Fault diagnosis is an important area of study with regard to the design and maintenance of multiprocessor systems.A new measure for fault diagnosis of systems,namely,non-inclusive diagnosability(denoted by MM^(*)),was proposed by Ding et *** this paper,we establish the non-inclusive diagnosability of a class of regular graphs under the PMC model and the MM^(*)*** applications,the non-inclusive diagnosabilities of hypercubes,hierarchical hypercubes,folded hypercubes,star graphs,bubble-sort graphs,pancake graphs and dual cubes are determined under the PMC model and the[math.Processing Error]model.

关键词： PMC model MM^(*)model Regular graph Fault diagnosability

A Novel Hybrid Method to Analyze Security Vulnerabilities in Android Applications

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Tsinghua Science and technology 2020年第5期25卷 589-603页

作者： Junwei Tang Ruixuan Li Kaipeng Wang Xiwu Gu Zhiyong xu School of Computer Science and technology Huazhong University of Science and TechnologyWuhan 430074China math.and Computer Science Department Suffolk UniversityBostonMA 02101USA and also with Shenzhen Institute of Advanced TechnologyChinese Academy of ScienceShenzhen 518055China

We propose a novel hybrid method to analyze the security vulnerabilities in Android *** method combines static analysis,which consists of metadata and data flow analyses with dynamic analysis,which includes dynamic executable scripts and application program interface *** hybrid method can effectively analyze nine major categories of important security vulnerabilities in Android *** design dynamic executable scripts that record and perform manual operations to customize the execution path of the target *** dynamic executable scripts can replace most manual operations,simplify the analysis process,and further verify the corresponding security *** successfully statically analyze 5547 malwares in Drebin and 10 151real-world *** average analysis time of each application in Drebin is 4.52 s,whereas it reaches 92.02 s for real-word *** system can detect all the labeled vulnerabilities among 56 labeled *** dynamic verification shows that our static analysis accuracy approximates 95%for real-world *** show that our dynamic analysis can effectively detect the vulnerability named input unverified,which is difficult to be detected by other *** addition,our dynamic analysis can be extended to detect more types of vulnerabilities.

关键词： Android security vulnerability analysis static analysis dynamic analysis

(ΩΩ)0+ Dibaryon Productions in Central Au+Au Collisions at RHIC Energy= 130 GeV

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Communications in Theoretical phys.cs 2002年第10期38卷 483-488页

作者： xu Xiao-Ming WANG Ping YU You-Wen Nuclear phys.cs Division Shanghai Institute of Nuclear Researchthe Chinese Academy of ScienecaeP.O.Box 800204Shanghai 201800China Institute of High Energy phys.cs the Chinese Acadeny of ScicnccsBeijing 100039China 不详

［10］H. yon Gersdorff, L. McLerran, M. Kataja, and P.V. Ruuskanen, phys. Rev. D34 (1986) 794.［11］E. Schnedermann, J. Sollfrank, and U. Heinz, phys. Rev.C48 (1993) 2462.［12］D.K. Srivastava, M.G. Mustafa, and B. Miller, ***. C56 (1997) 1064.［13］N. xu and M. Kaneta, in Proceedings of Quark Matter2001, SUNY, Jan. 15-20.［14］T.S. Biro, phys. Lett. B487 (2000) 133.［15］S.E. Vance, M. Gyulassy, and X.N. Wang, phys. Lett.B443 (1998) 45; S.E. Vance and M. Gyulassy, phys. ***. 83 (1999) 1735.［16］D. Kharzeev, phys. Lett. B378 (1996) 238.［17］WA97 Collaboration, E. Andersen, et al., phys. Lett.B449 (1999) 401; J. phys. G25 (1999) 171.［18］NA49 Collaboration, F. Siklér, et al., Nucl. phys. A661(1999) 45c.［19］Y.W. Yu, P. Wang, Z.Y. Zhang, C.R. Ching, and ***, Commun. Theor. phys. (Beijing, China) 35 (2001)553.［20］Y.W. Yu, P. Wang, Z.Y. Zhang, C.R. Ching, T.S. Ho,and L.Y. Chu, High Energy phys. Nucl. phys. 26 (2002)46.

关键词： dibaryon hadronic matter

Scattering for 3D Cubic Focusing NLS on the Domain Outside a Convex Obstacle Revisited

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Acta math.matica Sinica,English Series 2022年第6期38卷 1054-1068页

作者： Cheng Bin xu Teng Fei ZHAO Ji Qiang ZHENG The Graduate School of China Academy of Engineering phys.cs Beijing 100088P.R.China School of math.matics and phys.cs University of Science and Technology BeijingBeijing 100083P.R.China Institute of Applied phys.cs and Computational math.matics P.O.Box 8009Beijing 100088P.R.China

In this article,we consider the focusing cubic nonlinear Schr?dinger equation(NLS)in the exterior domain outside of a convex obstacle in R3with Dirichlet boundary *** revisit the scattering result below ground state in Killip-Visan-Zhang[The focusing cubic NLS on exterior domains in three ***,1,146-180(2016)]by utilizing the method of Dodson and Murphy[A new proof of scattering below the ground state for the 3d radial focusing cubic ***.,145,4859-4867(2017)]and the dispersive estimate in Ivanovici and Lebeau[Dispersion for the wave and the Schr?dinger equations outside strictly convex obstacles and ***.,355,774-779(2017)],which avoids using the concentration *** conquer the difficulty of the boundary in the focusing case by establishing a local smoothing effect of the *** on this effect and the interaction Morawetz estimates,we prove that the solution decays at a large time interval,which meets the scattering criterion.

关键词： Schrodinger equation exterior domain global well-posedness scattering criterion

Simultaneous analysis of three-dimensional percolation models

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Frontiers of phys.cs 2014年第1期9卷 113-119,F0004页

作者： Xiao xu Junfeng Wang Jian-Ping Lv Youjin Deng Hefei National Laboratory for phys.cal Sciences at Microscale and Department of Modern phys.cs University of Science and Technology of China Hefei 230026 China School of Electronic Science and Applied phys.cs Hefei University of Technology Hefei 230009 China Department of phys.cs China University of Mining and Technology Xuzhou 221116 China

We simulate the bond and site percolation models on several three-dimensional lattices, including the diamond, body-centered cubic, and face-centered cubic lattices. As on the simple-cubic lattice [phys. Rev. E, 2013, 87（5）： 052107], it is observed that in comparison with dimensionless ratios based on cluster-size distribution, certain wrapping probabilities exhibit weaker finite-size corrections and are more sensitive to the deviation from percolation threshold Pc, and thus provide a powerful means for determining Pc. We analyze the numerical data of the wrapping probabilities simultaneously such that univ.rsal parameters are shared by the aforementioned models, and thus significantly improved estimates of Pc are obtained.

关键词： percolation models Monto Carlo simulation simultaneous fit

Stable quantum interference enabled by coexisting detuned and resonant STIRAPs

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Chinese phys.cs B 2021年第5期30卷 353-361页

作者： Dan Liu Yichun Gao Jianqin xu Jing Qian Department of phys.cs School of Physics and Electronic ScienceEast China Normal UniversityShanghai 200062China

Inspired by a recent experiment[***.122253201(2019)]that an unprecedented quantum interference was observed in the way of stimulated Raman adiabatic passage(STIRAP)due to the coexisting resonant-and detuned-STIRAPs,we comprehensively study this *** results uncover the scheme robustness towards any external-field fluctuations coming from laser intensity noise and imperfect resonance condition,as well as the persistence of high-contrast interference pattern even when more nearby excited levels are *** verify that an auxiliary dynamical phase accumulated in hold time caused by the presence of the quasi-dark state in detuned-STIRAP can sensitively manipulate the visibility and frequency of the interference pattern,representing a new hallmark to measure the hyperfine energy *** robust stability of the scheme comes from the intrinsic superiority embedded in the STIRAP mechanism that preserves the coherence of population transfer,which promises a remarkable performance of quantum interference in a practical implementation.

关键词： quantum interference effect stimulated Raman adiabatic passage multi-level system

Transcriptome analysis reveals the differential regulatory effects of red and blue light on nitrate metabolism in pakchoi(Brassica campestris L.)

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Journal of Integrative Agriculture 2022年第4期21卷 1015-1027页

作者： FAN Xiao-xue BIAN Zhong-hua SONG Bo xu Hai Institute of Vegetable Crops/Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement Jiangsu Academy of Agricultural SciencesNanjing 210014P.R.China Photobiology Research Center Institute of Urban AgricultureChinese Academy of Agricultural SciencesChengdu 610200P.R.China

Pakchoi(Brassica campestris L. ssp. chinensis) is an important leafy vegetable. Various light spectra, especially red and blue light, play vital roles in the regulation of nitrate metabolism. Information on the effects of red and blue light on nitrate metabolism at the transcriptome level in pakchoi is still limited, so this study used RNA sequencing technology to explore this molecular mechanism. Through pairwise comparisons with white LED light, 3 939 and 5 534 differentially expressed genes(DEGs) were identified under red and blue light, respectively. By Kyoto Encyclopedia of Genes and Genomes(KEGG) and Gene Ontology(GO) analyses, these unigenes were found to be involved in nitrate assimilation, plant-pathogen interaction, biosynthesis of secondary metabolites, and phenylpropanoid biosynthesis. The differential effects of light spectra on the nitrate concentration and metabolism-related enzyme activities were also confirmed at the phys.ological level. Several signal transduction modules, including Crys/phys.COP1-HY5/HY5-like, were found to be involved in red and blue light-induced nitrate metabolism, and the transcript levels for this complex were consistent with the observed degree of nitrate assimilation. The expression patterns of 15 randomly selected DEGs were further validated using qPCR. Taken together, the results of this study could help improve our understanding of light spectrumregulated nitrate metabolism in pakchoi at the transcriptome level.

关键词： nitrate metabolism light spectra transcriptome gene expression pakchoi

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欠驱动双足步行机器人运动控制与动力学仿真

系统仿真学报 2008年第24期20卷 6745-6749,6753页

作者：绳涛王剑马宏绪李迅国防科技大学机电工程与自动化学院长沙410073

以欠驱动双足步行机器人为对象,提出一种基于落脚位置控制的运动控制算法,并对其行走控制过程进行动力学仿真。首先基于三维线性倒摆模型(3D-LIPM)控制机器人的落脚位置,建立其行走姿态的虚拟约束,利用有限时间收敛反馈控制器对行走过... 详细信息

以欠驱动双足步行机器人为对象,提出一种基于落脚位置控制的运动控制算法,并对其行走控制过程进行动力学仿真。首先基于三维线性倒摆模型(3D-LIPM)控制机器人的落脚位置,建立其行走姿态的虚拟约束,利用有限时间收敛反馈控制器对行走过程进行控制,实现了机器人的动态稳定行走。最后结合MATLAB的符号运算、SIMULINK和虚拟现实技术对其控制过程进行运动学和动力学仿真。实验结果表明控制算法是可行的。

关键词：双足步行机器人 3D-LIPM 步态规划反馈控制动力学仿真