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A Mutual Authentication and Cross Verification Protocol for securing Internet-of-Drones (IoD)

Computers, Materials & Continua 2022年第9期72卷 5845-5869页

作者： saeed Ullah jan Irshad Ahmed Abbasi Fahad Algarni Department of Computer science&IT University of MalakandChakadara18800Pakistan Faculty of science&Arts Belqarn Department of Computer ScienceUniversity of BishaSabtul Alaya 61985Saudi Arabia Faculty of Computing and Information Technology University of BishaBisha 67714Saudi Arabia

With the rapid miniaturization in sensor technology,Internet-ofDrones(IoD)has delighted researchers towards information transmission security among drones with the control station server(Css).In IoD,the drone is different in shapes,sizes,characteristics,and *** can be classified on the purpose of its deployment,either in the civilian or military ***’s manufacturing,equipment installation,power supply,multi-rotor system,and embedded sensors are not issues for *** main thing is to utilize a drone for a complex and sensitive task using an infrastructureless/self-organization/resource-less network type called Flying Ad Hoc Network(FANET).Monitoring data transmission traffic,emergency and rescue operations,border surveillance,search and physical phenomenon sensing,and so on can be achieved by developing a robust mutual authentication and cross-verification scheme for IoD deployment civilian *** several protocols are available in the literature,they are either design issues or suffering from other vulnerabilities;still,no one claims with conviction about foolproof security ***,in this paper,the researchers highlighted the major deficits in prior protocols of the domain,i.e.,these protocols are either vulnerable to forgery,side channel,stolen-verifier attacks,or raised the outdated data transmission *** order to overcome these loopholes and provide a solution to the existing vulnerabilities,this paper proposed an improved and robust public key infrastructure(PKI)based authentication scheme for the IoD *** proposed protocol’s security analysis section has been conducted formally using BAN(Burrows-Abadi-Needham)logic,ProVerif2.03 simulation,and informally using discussion/pragmatic *** the performance analysis section of the paper has been assessed by considering storage,computation,and communication *** comparing the proposed protocol with prior works,it has been demonstrate

关键词： Cryptography authentication confidentiality reachability ZsP

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Cobalt-embedded 3D conductive honeycomb architecture to enable high-sulphur-loading Li-s batteries under lean electrolyte conditions

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Nano Research 2022年第9期15卷 8091-8100页

作者： Hui Pan Zhibin Cheng jan Fransaer Jiangshui Luo Michael Wübbenhorst Laboratory for soft Matter and Biophysics Department of Physics and AstronomyKU LeuvenLeuven 3001Belgium Fujian Key Laboratory of Polymer Materials College of Chemistry and Materials ScienceFujian Normal UniversityFuzhou 350007China Department of Materials Engineering KU LeuvenLeuven 3001Belgium Lab of Electrolytes and Phase Change Materials College of Materials Science and EngineeringSichuan UniversityChengdu 610065China

High sulphur loading and lean electrolyte conditions are important to achieve the high theoretical energy density of lithiumsulphur(Li-s)***,serious problems such as low sulphur utilization and fast capacity fade are typically experienced under low electrolyte/sulphur(E/s)ratios and high sulphur loading *** address these issues,a cobaltcontaining three-dimensional conductive honeycomb(Co@N-HPC)is proposed in this work as a material for sulphur *** good electrical conductivity and high density of catalytic sites of(Co@N-HPC)allow fast redox kinetics of lithium polysulfide(LiPs)in high-sulphur-loading *** addition,the hierarchical structure and good wettability by the electrolyte of Co@NHPC facilitates electrolyte penetration and LiPs conversion,leading to a high utilization of sulphur under lean electrolyte ***,at a current density of 0.2 C,a volumetric capacity of 1,410 mAh·cm^(−3)was attained with a sulphur loading of 5.1 mg·cm^(−2)and an E/s ratio of 5μL·mg^(−1).This work provides ideas for the development of lean electrolyte Li-s batteries with a high sulphur loading.

关键词： honeycomb architecture cobalt nanoparticles high sulphur loading lean electrolyte lithium-sulphur battery

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An experimental study on the effects of friction modifiers on wheel-rail dynamic interactions with various angles of attack

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Railway Engineering science 2022年第3期30卷 360-382页

作者： Zhen Yang Pan Zhang jan Moraal Zili Li section of Railway Engineering Delft University of TechnologyStevinweg 12628 CN DelftThe Netherlands

By modifying friction to the desired level,the application of friction modifiers(FMs)has been considered as a promising emerging tool in the railway engineering for increasing braking/traction force in poor adhesion conditions and mitigating wheel/rail interface deterioration,energy consumption,vibration and *** the effectiveness of FMs in wheel–rail dynamic interactions is crucial to their proper applications in practice,which has,however,not been well *** study experimentally investigates the effects of two types of top-of-rail FM,***-A and FM-B,and their application dosages on wheel–rail dynamic interactions with a range of angles of attack(AoAs)using an innovative well-controlled V-track test *** tested FMs have been used to provide intermediate friction for wear and noise *** effectiveness of the FMs is assessed in terms of the wheel–rail adhesion characteristics and friction rolling induced axle box acceleration(ABA).This study provides the following new insights into the study of FM:the applications of the tested FMs can both reduce the wheel–rail adhesion level and change the negative friction characteristic to positive;stick–slip can be generated in the V-Track and eliminated by FM-A but intensified by FM-B,depending on the dosage of the FMs applied;the negative friction characteristic is not a must for stick–slip;the increase in ABA with AoA is insignificant until stick–slip occurs and the ABA can thus be influenced by the applications of FM.

关键词： Friction modifier V-track test rig Adhesion Wheel–rail dynamic interaction Angle of attack Axle box acceleration

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Insight into the photoinduced phenomena in ternary Ge-sb-se sputtered thin films

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Photonics Research 2022年第9期10卷 2261-2266页

作者： TOMÁŠHALENKOVIČ MAGDALÉNA KOTRLA jan GUTWIRTH VIRGINIE NAZABAL PETR NěMEC Department of Graphic Arts and Photophysics Faculty of Chemical TechnologyUniversity of PardubicePardubiceCzech Republic Univ Rennes CNRSISCR(Institut des Sciences Chimiques de Rennes)-UMR 6226F-35000 RennesFrance

The kinetics of photoinduced changes,namely,photobleaching and photodarkening in sputtered ternary Gesbsethin films,was *** study of time evolution of the absorption coefficientΔα(t)upon roomtemperature near-bandgap irradiation revealed several types of photoinduced *** as-deposited films exhibited a fast photodarkening followed by a dominative photobleaching *** thin films were found to undergo photodarkening *** local structure studied by Raman scattering spectroscopy showed significant structural changes upon thermal annealing,which are presumably responsible for a transition from the photobleaching observed in as-deposited and reversible photodarkening in annealed thin ***,a transient photodarkening process was observed in both as-deposited and annealed thin *** influence of the initial film thickness and laser optical intensity on the kinetics of photoinduced changes is discussed.

关键词： process. ternary kinetics

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ChemFET gas nanosensor arrays with alignment windows for assembly of single nanowires

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Nano Research 2023年第7期16卷 10234-10244页

作者： Ondřej Chmela Imrich Gablech Jakub sadílek jan Brodský stella Vallejos Central European Institute of Technology Brno University of TechnologyPurkyňova 12361200 BrnoCzech Republic Faculty of Electrical Engineering and Communication Brno University of TechnologyDepartment of MicroelectronicsTechnická3058/1061200 BrnoCzech Republic Instituto de Microelectrónica de Barcelona(IMB-CNM CSIC)Campus UABCarrer dels Til·lersCerdanyola del Vallès08193 BarcelonaSpain

This work focuses on the fabrication and characterization of Chemical Field-Effect Transistor(ChemFET)gas nanosensor arrays based on single nanowire(sNW).The fabrication processes include micro and nanofabrication techniques enabled by a combination of ultraviolet(UV)and e-beam lithography to build the ChemFET *** show the integration and connection of sNWs across the multiple pairs of nanoelectrodes in the ChemFET by dielectrophoresis process(DEP)thanks to the incorporation of alignment windows(200-300 nm)adapted to the diameter of the *** of the sNW ChemFET array's output and transfer characteristics prove the influence of gate bias on the drain current *** upon hydrogen(H_(2))and nitrogen dioxide(NO_(2))as analyte models of reducing and oxidizing gases show the ChemFET sensing ***,results demonstrate better response characteristics to H_(2)when the ChemFET operates in the subthreshold *** design concepts and methods proposed for fabricating the sNW-based ChemFET arrays are versatile,reproducible,and most likely adaptable to other systems where sNW arrays are required.

关键词： Chemical Field-Effect Transistor(ChemFET)nanosensors nanowires nanoelectrodes gas sensors

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Physical insights from imaginary-time density–density correlation functions

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Matter and Radiation at Extremes 2023年第5期8卷 57-72页

作者： Tobias Dornheim Zhandos A.Moldabekov Panagiotis Tolias Maximilian Böhme jan Vorberger Center for Advanced systems Understanding(CAsUs) D-02826 GörlitzGermany Helmholtz-Zentrum Dresden-Rossendorf(HZDR) D-01328 DresdenGermany space and Plasma Physics Royal Institute of Technology(KTH)Stockholm SE-10044Sweden Technische Universität Dresden D-01062 DresdenGermany

An accurate theoretical description of the dynamic properties of correlated quantum many-body systems,such as the dynamic structure factor s(q,ω),is important in many ***,highly accurate quantum Monte Carlo methods are usually restricted to the imaginary time domain,and the analytic continuation of the imaginary-time density–density correlation function F(q,τ)to real frequencies is a notoriously hard ***,it is argued that often no such analytic continuation is required because by definition,F(q,τ)contains the same physical information as does s(q,ω),only represented ***,it is shown how one can directly extract key information such as the temperature or quasi-particle excitation energies from theτdomain,which is highly relevant for equation-of-state measurements of matter under extreme conditions[*** et al.,***.13,7911(2022)].As a practical example,ab initio path-integral Monte Carlo results for the uniform electron gas(UEG)are considered,and it is shown that even nontrivial processes such as the roton feature of the UEG at low density[*** et al.,***.5,304(2022)]are manifested straightforwardly in F(q,τ).A comprehensive overview is given of various useful properties of F(q,τ)and how it relates to the usual dynamic structure *** fact,working directly in theτdomain is advantageous for many reasons and opens up multiple avenues for future applications.

关键词： imaginary continuation quantum

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spacecraft collision avoidance challenge:Design and results of a machine learning competition

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Astrodynamics 2022年第2期6卷 121-140页

作者： Thomas Uriot Dario Izzo Luís Fsimões Rasit Abay Nils Einecke sven Rebhan Jose Martinez-Heras Francesca Letizia jan siminski Klaus Merz The European space Agency Noordwijk2201 AZthe Netherlands ML Analytics LisbonPortugal FuturifAI CanberraAustralia Honda Research Institute Europe GmbH Offenbach 63073Germany EsOC Space Debris OfficeDarmstadt 64293Germany

spacecraft collision avoidance procedures have become an essential part of satellite *** and constantly updated estimates of the collision risk between orbiting objects inform various operators who can then plan risk mitigation *** measures can be aided by the development of suitable machine learning(ML)models that predict,for example,the evolution of the collision risk over *** October 2019,in an attempt to study this opportunity,the European space Agency released a large curated dataset containing information about close approach events in the form of conjunction data messages(CDMs),which was collected from 2015 to *** dataset was used in the spacecraft Collision Avoidance Challenge,which was an ML competition where participants had to build models to predict the final collision risk between orbiting *** paper describes the design and results of the competition and discusses the challenges and lessons learned when applying ML methods to this problem domain.

关键词： space debris collision avoidance competition kelvins

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Transmission dynamics of Hand-Foot-Mouth Disease with partial immunity through non-integer derivative

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生物数学学报:英文版 2023年第6期16卷 149-173页

作者： Rashid jan salah Boulaaras sultan Alyobit Muhammad Jawad Department of Mathematics University of Swabi Swabi 23561Khyber PakhtunkhwaPakistan Department of Mathematics College of Sciences and Arts Qassim UniversityAr RassSaudi Arabia Department of Mathematics College of Science 8 Arts King Abdulaziz UniversityRabighSaudi Arabia

In this paper,we formulate the transmission phenomena of Hand-Foot-Mouth Disease(HFMD)through non-integer *** interrogate the biological meaningful results of the recommended system of *** basic reproduction number is determined through next generation method and the impact of different parameters on the reproduction number is examined with the help of partial rank correlation coeficient(PRCC)*** addition,we concentrated on qualitative analysis and dynamical behavior of HFMD ***'s and schaefer's fixed-point theorems are used to analyze the uniqueness and existence of the solution of the proposed HFMD *** HFMD system's Ulam-Hyers stability has been confirmed to be *** highlight the impact of the parameters on the dynamics of HFMD,we performed several simulations through numerical scheme to conceptualize the transmission route of the *** be more specific,numerical simulations are used to visualize the effect of input parameters on the systems *** have shown the key input parameters of the system for the control of infection in the society.

关键词： Hand-Foot-Mouth Disease fractional derivatives mathematical model threshold parameter numerical scheme dynamical behavior

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Effects of a phase transition on two-pion interferometry in heavy ion collisions at √sNN=2.4-7.7 GeV

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science China(Physics,Mechanics & Astronomy) 2023年第3期66卷 88-97页

作者： Pengcheng Li jan steinheimer Tom Reichert Apiwit Kittiratpattana Marcus Bleicher Qingfeng Li Institut fur Theoretische Physik Johann Wolfgang Goethe Universitat FrankfurtFrankfurt am Main 60438Germany school of science Huzhou UniversityHuzhou 313000China school of Nuclear science and Technology Lanzhou UniversityLanzhou 730000China Frankfurt Institute for Advanced studies Frankfurt am Main 60438Germany GsI Helmholtzzentrum f¨urschwerionenforschung GmbH Darmstadt 64291Germany Helmholtz Research Academy Hesse for FAIR(HFHF) GSI Helmholtz Center for Heavy Ion PhysicsCampus FrankfurtFrankfurt am Main 60438Germany Center of Excellence in High Energy Physics&Astrophysics School of PhysicsSuranaree University of TechnologyNakhon Ratchasima 30000Thailand

Hanbury-Brown-Twiss(HBT) correlations for charged pions in central Au+Au collisions at √sNN=2.4-7.7 GeV(corresponding to beam kinetic energies in the fixed target frame from Elab=1.23 to 30 GeV/nucleon) are calculated using the ultra-relativistic quantum molecular dynamics model with different equations of state(Eoss).The effects of a phase transition at high baryon densities are clearly observed in the explored HBT *** results show that the available data on the HBT radii,RO/Rsand R^(2)_(O)-R^(2)_(s),in the investigated energy region favor a relatively stiff Eos at low beam energies,which then turns into a soft Eos at high collision energies consistent with astrophysical constraints on the high-density Eos of quantum chromodynamics(QCD).The specific effects of two different phase transition scenarios on RO/Rsand R^(2)_(O)-R^(2)_(s)are investigated.A phase transition with a significant softening of the Eos below four times the nuclear saturation density can be excluded using HBT *** results highlight that the pion’s RO/Rsand R^(2)_(O)-R^(2)_(s)are sensitive to the stiffness of the Eos and can be used to constrain and understand the QCD Eos in a high baryon density region.

关键词： heavy ion collisions HBT correlation equation of state

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Three-dimensional crystal plasticity and HR-EBsD analysis of the local stress-strain fields induced during twin propagation and thickening in magnesium alloys

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Journal of Magnesium and Alloys 2023年第2期11卷 657-670页

作者： Filip siska Daria Drozdenko Kristian Mathis jan Cizek Tingting Guo Matthew Barnett Institute of Physics of Materials The Czech Academy of SciencesZizkova 513/22Brno 61662Czech Republic Department of Physics of Materials Faculty of Mathematics and PhysicsCharles UniversityKe Karlovu 5Prague 12116Czech Republic Institute of Plasma Physics The Czech Academy of SciencesZa Slovankou 1782/3Prague 18200Czech Republic Institute for Frontier Materials Deakin UniversityGeelongVictoria 3216Australia

Present work focuses on analysis of the stress and strain fields inside and around the individual {10–12} twin in magnesium alloy. The 3D crystal plasticity model represents twin as an ellipsoidal inclusion surrounded by the matrix. Five different twin thicknesses and three different lateral twin lengths are used for stress/strain analysis. The simulations are complemented with experimental observations using high-resolution electron backscattered diffraction. The simulations and experiments show a similar distribution of the shear stress and the spatial activity of individual slip systems(basal, prismatic, pyramidal). Plasticity induced inside the twin is dominantly caused by the prismatic dislocations slip and does not influence twin back stress which is identical to pure elastic twin. The twin with larger lateral dimension requires lower equilibrium stress which suggests anisotropic twin propagation and increased thickness of such twins. The lateral twin propagation is mostly influenced by prismatic and pyramidal slip in the twin vicinity. The twin thickness can reach a maximal level that is driven by the critical resolved shear stress values for dislocation slip with the significant influence of basal slip.

关键词： Magnesium alloy Twinning FEM Crystal plasticity HR-EBsD

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