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Achieving Privacy-Preserving Iris Identification Via El Gamal

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Computers, Materials & Continua 2019年第8期61卷 727-738页

作者： Yong Ding Lei Tian Bo Han Huiyong wang Yujue wang james Xi Zheng Guangxi Key Laboratory of Cryptography and Information Security School of Computer and Information SecurityGuilin University of Electronic TechnologyGuilin541004China School of Mathematics and Computer Science Guilin University of Electronic TechnologyGuilin541004China Software Engineering Department of Computing Macquarie UniversitySydneyNSW 2109 Australia

Currently,many biometric systems maintain the user’s biometrics and templates in plaintext format,which brings great privacy risk to uses’biometric *** are unique and almost unchangeable,which means it is a great concern for users on whether their biometric information would be *** address this issue,this paper proposes a confidential comparison algorithm for iris feature vectors with masks,and develops a privacy-preserving iris verification scheme based on the El Gamal encryption *** our scheme,the multiplicative homomorphism of encrypted features is used to compare of iris features and their mask ***,this paper improves the Hamming distance of iris features,which makes the similarity matching work better than existing *** results confirm the practicality of our proposed schemes in real world applications,that is,for the iris feature vectors and masks of 2048 bits,nearly 12 comparisons can be performed per second.

关键词： Homomorphic encryption template matching Hamming distance

Addressing the impact of canine distemper spreading on an isolated tiger population in northeast Asia

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Integrative Zoology 2023年第6期18卷 994-1008页

作者： Dawei wang james L.D.SMITH Francesco ACCATINO Jianping GE Tianming wang Ministry of Education Key Laboratory for Biodiversity Science and Engineering NFGA Key Laboratory for Conservation Ecology of Northeast Tiger and Leopard&College of Life SciencesBeijing Normal UniversityBeijingChina Department of Fisheries Wildlife and Conservation BiologyUniversity of MinnesotaSt.PaulMNUSA UMR SADAPT INRAEAgroParisTechUniversitéParis-SaclayPALAISEAU CedexFrance

The continuation of the isolated Amur tiger(Panthera tigris altaica)population living along the China-Russia border is facing serious challenges due to factors such as its small size(including 38 individuals)and canine distemper virus(CDV).We use a population viability analysis metamodel,which consists of a traditional individual-based demographic model linked to an epidemiological model,to assess options for controlling the impact of negative factors through domestic dog management in protected areas,increasing connectivity to the neighboring large population(including more than 400 individuals),and habitat *** intervention,under inbreeding depression of 3.14,6.29,and 12.26 lethal equivalents,our metamodel predicted the extinction within 100 years is 64.4%,90.6%,and 99.8%,*** addition,the simulation results showed that dog management or habitat expansion independently will not ensure tiger population viability for the next 100 years,and connectivity to the neighboring population would only keep the population size from rapidly ***,when the above three conservation scenarios are combined,even at the highest level of 12.26 lethal equivalents inbreeding depression,population size will not decline and the probability of extinction will be<5.8%.Our findings highlight that protecting the Amur tiger necessitates a multifaceted synergistic *** key management recommendations for this population underline the importance of reducing CDV threats and expanding tiger occupancy to its former range in China,but re-establishing habitat connectivity to the neighboring population is an important long-term objective.

关键词： Amur tiger canine distemper virus habitat connectivity metamodel population viability analysis(PVA)

Mechanistic insights into the novel glucose-sensitive behavior of P(NIPAM-co-2-AAPBA)

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Science China Chemistry 2020年第3期63卷 377-385页

作者： Qingxian wang Mian Fu Ying Guan Tony D.james Yongjun Zhang Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology Institute of Polymer ChemistryCollege of ChemistryNankai UniversityTianjin 300071China Department of Chemistry University of BathClaverton DownBath BA27AYUK

A glucose-sensitive polymer,poly(N-isopropylacrylamide-co-2-acrylamidophenylboronic acid)(P(NIPAM-co-2-AAPBA)),was synthesized by reversible addition fragmentation chain transfer(RAFT)*** of glucose results in reduced solubility and hence increased turbidity,rather than the normal increase in solubility(decreased turbidity)observed for other PBA-based glucose-sensitive *** novel glucose-sensitive behavior is explained by a new mechanism,in which glucose acts as an additive and depresses the lower critical solution temperature(LCST)of the polymer,instead of increasing solubility by increasing the degree of ionization of the PBA *** and theoretic analysis for the influence of glucose on the thermal behavior of P(NIPAM-co-2-AAPBA)reveals that glucose depresses the LCST of P(NIPAM-co-2-AAPBA)copolymers in a two-stage manner,a fast decrease at low glucose concentrations followed by a slow decrease at high glucose *** low glucose concentrations,the binding of glucose with PBA groups on the polymer chain increases the number of glucose molecules proximal to the polymer which influences the thermal behavior of the polymer,causing a rapid decrease in ***,the transition occurs at a glucose concentration equal to the reciprocal of the binding constant between PBA and glucose,thus providing a novel method to determine the binding *** saccharides,including mannose,galactose and fructose,also depress the LCST of P(NIPAM-co-2-AAPBA)copolymer in the same way.

关键词： glucose-sensitive mechanism phenylboronic acid thermosensitive binding constant lower critical solution temperature polymers

术中吲哚菁绿荧光造影在神经血管外科手术中的应用进展

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转化医学电子杂志 2018年第4期5卷 29-33页

作者：师炜孙振兴王劲王贵怀乌优图荆林凯郭毅清华大学附属北京清华长庚医院清华大学临床医学院北京102218

吲哚菁绿荧光血管造影作为一种非侵袭性、简便和实用的技术应用于神经外科多个领域之中。自2003年引入神经血管外科以来,其应用范围逐步拓展。本研究通过系统性回顾,评估在传统应用范围以外,该技术在基于临时阻断、经导管动脉注射吲哚... 详细信息

吲哚菁绿荧光血管造影作为一种非侵袭性、简便和实用的技术应用于神经外科多个领域之中。自2003年引入神经血管外科以来,其应用范围逐步拓展。本研究通过系统性回顾,评估在传统应用范围以外,该技术在基于临时阻断、经导管动脉注射吲哚菁绿、经内镜系统采集荧光信号以及定量荧光分析等多个创新领域中方法学的应用进展,进而寻求解决当前传统造影术局限的方法。除此之外,本研究还将对文献中新方法的优缺点进行总结并对其应用前景进行讨论。

关键词：吲哚菁绿血管造影 FLOW 800 神经血管外科

SERS Nanotags and Their Applications in Biosensing and Bioimaging

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Journal of Analysis and Testing 2018年第1期2卷 26-44页

作者： Wei Zhang Lianmei Jiang james APiper Yuling wang Department of Molecular Sciences Macquarie UniversitySydneyNSW 2109Australia ARC Centre of Excellence for Nanoscale BioPhotonics(CNBP) Macquarie UniversitySydneyNSW 2109Australia Department of Physics and Astronomy Macquarie UniversitySydneyNSW 2109Australia

Owing to the unique advantages of surface enhanced Raman scattering(SERS)in high sensitivity,specificity,multiplexing capability and photostability,it has been widely used in many applications,among which SERS biosensing and bioimaging are the focus in recent *** successful applications of SERS for non-invasive biomarker detection and bioimaging under in vitro,in vivo and ex vivo conditions,offer significant clinical information to improve diagnostic and prognostic *** review provides recent developments and applications of SERS,in particular SERS nanotags in biosensing and bioimaging,describing case studies in which different types of biomarkers have been investigated,as well as outlining future challenges that need to be addressed before SERS sees both pathological and clinical use.

关键词： SERS Plasmonic nanostructure Nanotags Biosensing Bioimaging Biomarker

Influence of conductive network composite structure on the electromechanical performance of ionic electroactive polymer actuators

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International Journal of Smart and Nano Materials 2012年第3期3卷 204-213页

作者： Reza Montazami Dong wang james R.Heflin Department of Mechanical Engineering Iowa State UniversityAmesIowa 50011USA Department of Physics Virginia TechBlacksburgVirginia 24061USA

The influence of the nanostructure of the conductive network composite(CNC)on the performance of ionic electroactive polymer(IEAP)actuators has been examined in *** have studied IEAP actuators consisting of CNCs with different volume densities of gold nanoparticles(AuNPs)and the polymer *** the concentration of AuNPs in CNC thin films was used as a means to control the CNC-ion interfacial area and the electrical resistance of the CNC,with minimum effect on the mechanical properties of the *** the interfacial area and reducing the resistance,while maintaining porosity of the composite,provide means for generating motion of more ions into the CNC at a significantly shorter time,which results in generation of strain at a faster *** have demonstrated that cationic strain in actuators with denser CNCs is improved by more than 460%.Denser CNC structures have larger interfacial areas,which results in attraction/repulsion of more ions in a shorter time,thus generation of a larger mechanical strain at a faster ***,time-dependent response to a square-wave voltage was improved by increasing the AuNP concentration in the *** 0.1 Hz frequency,the cationic strain was increased by 64%when the AuNP concentration was increased from 4 to 20 ppm.

关键词： ionic electroactive polymer actuator functional thin film conductive network composite

Self-reaction of initial active groups in coal

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International Journal of Mining Science and Technology 2012年第2期22卷 169-175页

作者： Qi Xuyao wang Deming james A Milke Zhong Xiaoxing State Key Laboratory of Coal Resources and Mine Safety School of Safety EngineeringChina University of Mining&TechnologyXuzhou 221008China Department of Fire Protection Engineering University of Maryland.College ParkMD 20742USA

For further understanding of self-heating of coal, we tested the reactions of seven different ranks of coal under inert atmosphere. In the test, 50-gram of coal sample ranged from 0.18 mm to 0.38 mm was put into a special designed copper reaction vessel and let pure nitrogen to flow into the coal sample from the bottom at a rate of 100 mL/min. The programmed temperature enclosure was run at a programmed rate of 0.8 ~C/min. The concentration of the carbon oxides and the coal temperature were tested. The results show that the coal reactions under inert atmosphere can generate CO and C02. The reactions under inert atmosphere are affected by coal ranks, initial pore structure of coal and sulfur content. For low ranks of coal, the productions of carbon oxides are piecewise. The coal temperature is lower than the surrounding temperature throughout the reactions under inert atmosphere, but it rises quickly and reaches a crossing point temperature in the later stage under dry-air atmosphere. Based on the analysis, it indicates the self-reaction of initial active groups exists in the self-heating of coal besides the reactions in the two parallel reactions model. Spontaneous combustion of coal is due to both the oxidation heat accumulation and the chain reaction. A new reaction model of self-heating of coal was orooosed.

关键词： CoalSelf-heatingInitial active groupsSelf-reactionInert atmosphereCarbon oxides

Work conjugate strain of virial stress

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International Journal of Smart and Nano Materials 2016年第1期7卷 39-51页

作者： Leyu wang Jiaoyan Li james D.Lee Center for Collision Safety and Analysis College of ScienceGeorge Mason UniversityFairfaxVAUSA School of Engineering Brown UniversityProvidenceRIUSA Department of Mechanical and Aerospace Engineering The George Washington UniversityWashingtonDCUSA

Certain stress tensor and strain tensor form a conjugate pair if there exists a scalar valued strain energy function such that the stress tensor is equal to the derivative of strain energy function with respect to the strain *** stress is widely accepted as the stress measurement in molecular dynamics(MD).However,its conjugate strain is not yet *** atomic logarithmic strain is proposed and numerically verified as the conjugate strain of virial stress at 0 K *** strain energy is calculated by virial stress and the proposed atomic logarithmic strain equals to the interatomic potential energy *** conclusion is numerically verified with(1)Coulomb-Buckingham potential,Lenard-Jones potential,or arbitrary nonlinear pair potential and(2)randomly generated atomic configurations and deformation *** are given in determining the stress–strain relation for magnesium oxide with MD *** result shows that the atomic logarithmic strain is identical to engineer-ing strain when deformation is small.

关键词： Thermodynamic pair conjugacy virial stress atomic logarithmic strain molecular dynamics interatomic potential strain energy magnesium oxide

Analysing the power transformer temperature limitation for avoidance of bubble formation

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High Voltage 2019年第3期4卷 210-216页

作者： james Hill Zhongdong wang Qiang Liu Christoph Krause Gordon Wilson The University of Manchester ManchesterM139PLUK Weidmann Electrical Technology AG Rapperswil-JonaCH 8640Switzerland National Grid WarwickCV346DAUK

Failure of a transformer is a costly incident which can impact power system operation and result in loss of supply to *** can fail through a number of mechanisms,one of which is from the formation of bubbles within the ***,the loading guidance is set to avoid certain overload temperatures as high temperature is the main cause of bubbles *** paper analyses the limit set within the loading guides,comparing the most commonly cited temperature limit of 140℃ with values taken from across the full spectra of available studies in *** is concluded that there is sufficient evidence for further investigation into formation of bubbles from transformer insulation as employing a single temperature limit may be *** of a single temperature value is unsuitable,given the wide range of potential scenarios that the transformer fleet can *** has become the go-to rationale that the moisture content of the solid insulation is the key driver for transformer bubbling *** is true,however,it is shown that other factors such as solid insulation aged condition(determined through degree of polymerisation value)and the insulation type are also important considerations.

关键词： insulation limit power