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Static tainting extraction approach based on information flow graph for personally identifiable information

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Science China(Information Sciences) 2020年第3期63卷 156-172页

作者： Yi LIU Lejian liao Tian SONG School of Computer Science and Technology Beijing Institute of Technology College of Mathematics and Computer Science Yan'an University

Personally identifiable information(PII) is widely used for many aspects such as network privacy leak detection, network forensics, and user portraits. Internet service providers(ISPs) and administrators are usually concerned with whether PII has been extracted during the network transmission process. However,most studies have focused on the extractions occurring on the client side and server side. This study proposes a static tainting extraction approach that automatically extracts PII from large-scale network traffic without requiring any manual work and feedback on the ISP-level network traffic. The proposed approach does not deploy any additional applications on the client side. The information flow graph is drawn via a tainting process that involves two steps: inter-domain routing and intra-domain infection that contains a constraint function(CF) to limit the "over-tainting". Compared with the existing semantic-based approach that uses network traffic from the ISP, the proposed approach performs better, with 92.37% precision and 94.04%recall. Furthermore, three methods that reduce the computing time and the memory overhead are presented herein. The number of rounds is reduced to 0.0883%, and the execution time overhead is reduced to 0.0153%of the original approach.

关键词： personally identifiable information network privacy leak detection static tainting network traffic analysis information flow graph inter-domain routing intra-domain infection constraint function

2D/2D Heterostructures:Rational Design for Advanced Batteries and Electrocatalysis

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Energy & Environmental Materials 2022年第1期5卷 115-132页

作者： Jun Mei Ting liao Ziqi Sun School of Chemistry and Physics Queensland University of Technology2 George StreetBrisbane Qld 4000Australia School of Mechanical Medical and Process Engineering Queensland University of Technology2 George StreetBrisbane Qld 4000Australia Centre for Materials Science Queensland University of Technology2 George StreetBrisbane Qld 4000Australia

Two-dimensional/two-dimensional(2D/2D)heterostructures consisting of two or more 2D building blocks possess intriguing electronic features at the nanosized interfacial regions,endowing the possibility for effectively modulating the confinement,and transport of charge carriers,excitons,photons,phonons,*** bring about a wide range of extraordinary physical,chemical,thermal,and/or mechanical *** rational design and synthesis of 2D/2D heterostructures,electrochemical properties for advanced batteries and electrocatalysis can be well regulated to meet some practical *** this review,a summary on the commonly employed synthetic strategies for 2D/2D heterostructures is first given,followed by a comprehensive review on recent progress for their applications in batteries and various electrocatalysis ***,a critical outlook on the current challenges and promising solutions is presented,which is expected to offer some insightful ideas on the design principles of advanced 2D-based nanomaterials to address the current challenges in sustainable energy storages and green fuel generations.

关键词： 2D heterostructures 2D nanomaterials battery electrocatalysis energy storage

Self-healing Ionic Liquid-based Electronics and Beyond

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Chinese Journal of Polymer Science 2021年第10期39卷 1235-1245,I0005页

作者： Shenglong liao Xiaodong Lian Yapei Wang Department of Chemistry Renmin University of ChinaBeijing 100872China

Owing to the advantages of non-volatility,outstanding fluidity and easy recyclability,ionic liquid-based electronics,such as thermometer,strain sensors and thermoelectric converters,have been growing as attractive alternatives to traditionally solid *** fluidic character endows the ionic liquid-based circuit with self-healing ability,satisfying the needs of longer lifetime and less waste generation for electronics,while at the same time brings the risk of *** the leakage without sacrifice of self-healing ability is one of the major challenges for constructing ionic liquid-based electronic *** this feature article,we summarize our recent progresses in developing two types of self-healing electrical devices based on ionic liquids with little risk of *** type involves the encapsulation of ionic liquids in self-healing polymers,and the other type uses ionic polymers or free-standing ionic liquids which are successfully formulated as intrinsically conductive,self-healing,and recyclable electronic devices without additional *** the end,a comprehensive outlook is prospected for the future development of ionic liquid-based self-healing electronics,which is expected to spur more innovative work in this field.

关键词： Self-healing electronics Self-healing materials Recyclable electronics Ionic liquid Liquid leakage

Thermodynamic property of sandwich cylindrical shell structure with metallic wire mesh:Numerical modeling and experimental analysis

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Chinese Journal of Aeronautics 2024年第1期37卷 138-152页

作者： Xin XUE Guojian SHEN Juan liao Institute of Metal Rubber&Vibration Noise School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou 350116China Fujian Shuikou Power Generation Group Co. LTDFuzhou 350000China

As a new addition to lightweight composite structures,the sandwich cylindrical shell with a metallic wire mesh core has emerged as a promising solution for thermodynamic performance analysis at elevated *** intricate interwoven cellular formations within the metallic wire mesh pose difficulties for thermo-mechanical modeling and property ***,the constitutive models employed to characterize hysteresis phenomena were presented,comprising isotropic elasticity,Bergstrom-Boyce model,Ogden hyper-elasticity,and parameter identification through mechanical examinations at varying ***,the finite element modeling of cylindrical shell structures was determined for modal and steady-state dynamic ***,the experimental procedures were carried out,including the preparation of the sandwich cylindrical shell and the dynamic testing *** first-order natural frequency of the cylindrical shell structure is close to the resonance frequency of the dynamic test results,with a maximum error of 6.5%,demonstrating the accuracy of the simulation *** compared to the solid-core cylindrical shell,the average insertion loss of the sandwich cylindrical shell structure within the frequency range of 10–1000 Hz at room temperature is up to 11.09 ***,at elevated temperatures,the average insertion loss of the sandwich cylindrical shell decreases but fluctuates as the temperature changes.

关键词： Energy dissipation Metallic matrix composites Numerical analysis Sandwich structure Thermodynamic properties

Microstructure and properties of YG8 cemented carbide with different pulse currents

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Rare Metals 2020年第5期39卷 597-606页

作者： liao Wei Yi Yang Gang Yang School of Mechanical Engineering Sichuan UniversityChengdu 610065China College of Arts and Sciences Guangxi Radio and TV UniversityNanning 530022China

In order to study the effect of pulse current treatment on the mechanical properties,microstructure and cutting performance of YG8 cemented carbide,experiments were carried out by using self-made pulse current treatment device to treat cemented carbide samples with different current densities(J=5,10 and 15 A·mm^-2)After the treatment of pulse current,when the current density increased from 5 to 15 A·mm-2,the hardness of the sample was improved to HV 1605,HV 1629 and HV 1653from HV 1574;the transverse rupture strengths of the sample were 2136,2289 and 2364 MPa,which were all higher than that of the untreated sample(2062 MPa)increasing by 3.6%,11.0%and 14.6%,respectively;the corresponding cutting performance was increased by10.1%,13.9%and 19.4%,compared to that of the untreated *** tool’s life was also *** the treatmen of pulse current,pulse current provided the driving force for dislocation motion,making it more likely for the dislocation to multiply and slip,the dislocation density was increased,and the mechanical properties were significantly improved.

关键词： Pulse current YG8 cemented carbide Microstructure Mechanical properties Cutting performance

Physical-Layer Authentication via a Dynamic Scaling

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Chinese Journal of Electronics 2020年第4期29卷 651-659页

作者： LI Min JIANG Shaoquan liao Yongjian Institute of Information Security Mianyang Normal University School of Information and Software Engineering University of Electronic Science and Technology of China

Message authentication is a process that allows sender Alice to transmit a source state to receiver Bob such that the latter is assured of the *** study this problem in the physical-layer where the channel is degraded by a Rayleigh fading and a Gaussian *** propose an efficient construction for our *** idea is to amplify a basic codeword of the source state with a small but dynamic scaling *** scaling factor is asymptotically *** thus essentially incurs no power *** authentication is achieved through a statistical *** scheme is provably secure and performs better than the related existing ***,our error analysis allows it to be realized with very practical parameters.

关键词： Physical-layer authentication Information security Message authentication code

A NOTE ON STABILITY OF THE SPLIT-STEP BACKWARD EULER METHOD FOR LINEAR STOCHASTIC DELAY INTEGRO-DIFFERENTIAL EQUATIONS

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Journal of Systems Science & Complexity 2012年第5期25卷 873-879页

作者： Feng JIANG Yi SHEN Xiaoxin liao Department of Control Science and Engineering Huazhong University of Science and Technology School of Statistics and Mathematics Zhongnan University of Economics and Law Department of Control Science and Engineering the Key Laboratory of Ministry of Eduction for Image Processing and Intelligent ControlHuazhong University of Science and Technology

In the literature （Tan and Wang, 2010）, Tan and Wang investigated the convergence of the split-step backward Euler （SSBE） method for linear stochastic delay integro-differential equations （SDIDEs） and proved the mean-square stability of SSBE method under some condition. Unfortu- nately, the main result of stability derived by the condition is somewhat restrictive to be applied for practical application. This paper improves the corresponding results. The authors not only prove the mean-square stability of the numerical method but also prove the general mean-square stability of the numerical method. Furthermore, an example is given to illustrate the theory.

关键词： General mean-square stability mean-square stability split-step backward Euler method stochastic delay integro-differential equations.

Heterogeneity analysis of gas-solid flow hydrodynamics in a pilot-scale fluidized bed reactor

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Chinese Journal of Chemical Engineering 2022年第10期50卷 117-129页

作者： Jiawei liao Litao Zhu Zhenghong Luo Department of Chemical Engineering School of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Mesoscale drag model is of crucial significance for the reliability and accuracy in coarse-grid EulerianEulerian two-fluid model(TFM)simulations of gas-solid flow hydrodynamics in fluidized bed *** numerous mesoscale drag models have been reported in the literature,a systematic comparison of their prediction capability from the perspective of heterogeneity analysis is still *** this study,in order to investigate the effect of several typical drag models on the hydrodynamic behaviors,the nonuniformity analysis and the sensitivity to material properties,extensive coarse-grid TFM simulations of a bubbling pilot-scale fluidized bed reactor are carried *** results demonstrate that the mesoscale drag models outperform the empirical drag model in terms of nonuniformity due to the consideration of the influence of the mesoscale structures on the drag force in the bubbling ***,the results reveal that our previously developed three-marker gradient-based drag model considering the solid concentration gradient exhibits satisfactory performance in predicting the bubbling flow ***,the material-property-dependent drag model considering the explicit effect of material properties on drag corrections is most sensitive to the particle *** work provides guideline for possible future improvements of mesoscale models to simulate gas-solid flow more accurately and universally.

关键词： Fluidized bedreactor Bubbling gas–solidflows Mesoscale dragmodels Coarse-grid TFMsimulations Heterogeneity analysis

Optimal maneuver strategy to improve the observability of angles-only rendezvous

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Journal of Systems Engineering and Electronics 2023年第4期34卷 1020-1032页

作者： DU Ronghua liao Wenhe ZHANG Xiang School of Mechanical Engineering Nanjing University of Science and TechnologyNanjing 210094China

This paper proposes an optimal maneuver strategy to improve the observability of angles-only rendezvous from the perspective of relative navigation.A set of dimensionless relative orbital elements(ROEs)is used to parameterize the relative motion,and the objective function of the observability of anglesonly navigation is *** analytical solution of the optimal maneuver strategy to improve the observability of anglesonly navigation is obtained by means of numerical analysis.A set of dedicated semi-physical simulation system is built to test the performances of the proposed optimal maneuver ***,the effectiveness of the method proposed in this paper is verified through the comparative analysis of the objective function of the observability of angles-only navigation and the performances of the angles-only navigation filter under different maneuver *** with the cases without orbital maneuver,it is concluded that the tangential filtering accuracy with the optimal orbital maneuver at the terminal time is increased by 35%on average,and the radial and normal filtering accuracy is increased by 30%on average.

关键词： angles-only navigation observability optimal maneuver orbital rendezvous