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A Privacy-preserving Energy Management System Based on Homomorphic Cryptosystem for IoT-enabled Active Distribution Network

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 167-178页

作者： Qian Hu Siqi Bu Wencong Su vladimir Terzija the Department of Physics Hong Kong Baptist UniversityHong KongChina the Department of Electrical and Electronic Engineering Shenzhen Research InstituteThe Hong Kong Polytechnic UniversityHong KongChina the Department of Electrical and Computer Engineering University of Michigan-DearbornDearbornMI 48128USA the School of Engineering Newcastle UniversityNewcastleUK

Active distribution network(ADN),as a typically cyber-physical system,develops with the evolution of Internet of Things(IoTs),which makes the network vulnerable to cybersecurity *** this paper,the eavesdropping attacks that lead to privacy breaches are addressed for the IoT-enabled ADN.A privacy-preserving energy management system(EMS)is proposed and empowered by secure data exchange protocols based on the homomorphic *** the information transmission among distributed generators and load customers in the EMS,private information including power usage and electricity bidding price can be effectively protected against eavesdropping *** correctness of the final solutions,e.g.,optimal market clearing price and unified power utilization ratio,can be deterministically *** simulation results demonstrate the effectiveness and the computational efficiency of the proposed homomorphically encrypted EMS.

关键词： Eavesdropping attack energy management system homomorphic cryptosystem Internet of Things(IOTs) active distribution network(ADN) privacy-preserving

Quantum Monte-Carlo simulation of FeAs-based superconductors

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International Journal of Modeling, Simulation, and Scientific Computing 2014年第S01期5卷 129-136页

作者： vladimir Kashurnikov Andrey Krasavin National Research Nuclear University MEPhI(Moscow Engineering Physics Institute)Kashirskoye Shosse 31 MoscowRussia

The generalized quantum Monte Carlo algorithm is developed and used to calculate the energy,occupation numbers,and correlations functions of finite FeAs clusters in the two-orbital model at finite *** coding of quantum states made it possible to take into account complex exchange terms between the *** results for the calculation of the thermodynamic characteristics of finite two-dimensional FeAs clusters simulating iron-based superconductors have been *** calculated correlation functions indicate the possibility of the effective attraction of charge carriers.

关键词： Iron-based superconductors Monte Carlo algorithm two-orbital model

Penile prosthesis implantation and tunica albuginea incision without grafting in the treatment of Peyronie＇s disease with erectile dysfunction

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Asian Journal of Andrology 2013年第3期15卷 391-394页

作者： Miroslav L Djordjevic vladimir Kojovic School of Medicine University of Belgrade Belgrade 11000 Serbia

We evaluated penile prosthesis implantation with tunica albuginea-relaxing incisions without grafting in the treatment of Peyronie＇s disease associated with erectile dysfunction. Between April 2005 and June 2011, 62 patients underwent surgery due to severe Peyronie＇s disease associated with erectile dysfunction. Malleable and inflatable penile prostheses were inserted in 49 and 13 cases, respectively. Penile prostheses were inserted into the corpora cavernosa using the standard ventral approach. After lifting the neurovascular bundle, the tunica albuginea was incised and opened at the plaque region to correct the deformities and to lengthen the penis. Subsequently, the wide neurovascular bundle was replaced, and all incisions of the tunica albuginea were covered to prevent corporal grafting. In the median follow-up of 35 months （range 14-82 months）, the penis was completely straightened in 59 （95%） patients. Numbness of the glans, which the patients found initially upsetting, decreased or disappeared spontaneously 3-6 months later. Penile prosthesis implantation with tunica albuginea incisions is a viable alternative in the treatment of Peyronie＇s disease because the extensive dissection of the neurovascular bundle allows a good approach to the plaque and provides excellent covering of the incised tunica albuginea without additional grafting.

关键词： erectile dysfunction neurovascular bundle penile prosthesis Peyronie's disease tunica albuginea

Gas-cooled thorium reactor at various fuel loadings and its modification by a plasma source of extra neutrons

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Nuclear Science and Techniques 2019年第12期30卷 72-82页

作者： Andrey Arzhannikov Sergey Bedenko vladimir Shmakov vladimir Knyshev Igor Lutsik Vadim Prikhodko Igor Shamanin Budker Institute of Nuclear Physics SB RAS NovosibirskRussia 630090 National Research Tomsk Polytechnic University TomskRussia 634050 Russian Federal Nuclear Center–Zababakhin Institute of Applied Physics SnezhinskRussia 456770

This work presents the results of computer simulation of neutronic processes in a high-temperature gas-cooled thorium reactor for 30 different options of core *** guarantee stable and long-term reactor operation(7-10 years),the quantity of fuel compact dispersion phase and starting fuel composition was *** is demonstrated that it is possible in principle to substitute the near-axial recirculation zone of the reactor core by a long magnetic trap with a high-temperature plasma column for generating thermonuclear *** distribution of neutron yield along the length of the plasma source is also *** a thorium reactor,with a near-axial source of extra neutrons,can be applied for researching thermophysical and neutronic characteristics of dispersion thorium fuel to improve its *** results of the work are of great interest from the perspective of future advancement of the thermonuclear power industry,by means of creation of a hybrid installation based on a thorium reactor with a long plasma column as a source of additional neutrons.

关键词： Low-power thorium reactor Thorium hybrid reactor Nuclear fuel evolution

Periodical zonal character of damage near the openings inhighly-stressed rock mass conditions

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Journal of Rock Mechanics and Geotechnical Engineering 2016年第2期8卷 164-169页

作者： vladimir VMakarov Mikhail AGuzev vladimir NOdintsev Lyudmila SKsendzenko Far-Eastern Federal University VladivostokRussia Russian Academy of Sciences MoscowRussia

Rock mass damage at great depths near underground openings is often of a zonal ***,the classical elastoplastic theory fails to explain sufficiently all properties of zonal failure structures.A new non-Euclidean mathematical model for highly-stressed rock mass was developed based on the principles of mechanics of defected material and non-equilibrium *** were developed to determine model parameters that provide satisfactory correspondence between the experimental findings concerning faulted zonal structures near openings at great depths and mathematical *** mechanism of this phenomenon was discovered which consisted in a periodical character of stresses in the surrounding rock mass and development of tensile macrocracks at zones of maximal tangential *** relationships between the cracking zone width and rock mass strength were established.

关键词： Rock failure Openings Zones Modeling

Transient near tip fields in crack dynamics

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Science China(Physics,Mechanics & Astronomy) 2011年第7期54卷 1309-1318页

作者： BRATOV vladimir PETROV Yuri UTKIN Alexander Institute of Problems of Mechanical Engineering Russian Academy of SciencesSt.-Petersburg 199178Russia St.-Petersburg State University St.-Petersburg 198504Russia

Transient effects of stress-strain fields in the vicinity of a stationary crack tip under high rate loads are *** analytical solutions to near tip stresses are compared to fields prescribed by leading terms(one or several) of Williams asymptotic *** of load application mode,time(or,which is the same,distance from a crack tip) and Poisson's ratio on this discrepancy is extensively *** effects connected with crack tip propagation speed are also *** inconsistencies between real(or received in numerical solutions of state *** element computations) crack tip fields and stress intensity factor(SIF) singular field observed by numerous researchers are *** scope of problems where SIF field can be used for correct prediction of dynamic stress-strain fields in the crack tip region is *** to correctly approximate fields that are not SIF dominated,accounting additional terms of Williams expansion,is studied.

关键词： transient crack tip fields dynamic fracture high-rate loads asymptotic expansions

Power system restoration:a literature review from 2006 to 2016

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Journal of Modern Power Systems and Clean Energy 2016年第3期4卷 332-341页

作者： Yutian LIU Rui FAN vladimir TERZIJA Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong UniversityJinan 250061China Department of Electrical and Electronic Engineering University of ManchesterManchester M139PLUK

Power system restoration has attracted more attention and made great progress recently. Research progress of the power system restoration from 2006 to 2016 is reviewed in this paper, including black-start, network reconfiguration and load restoration. Some emerging methods and key techniques are also discussed in the context of the integration of variable renewable energy and development of the smart grid. There is a long way to go to achieve automatic self-healing in bulk power systems because of its extreme complexity. However, rapidly developing artificial intelligence technology will eventually enable the step-by-step dynamic decision-making based on the situation awareness of supervisory control and data acquisition systems(SCADA) and wide area measurement systems(WAMS) in the near future.

关键词： Large-scale blackout Power system restoration Self-healing Smart grid Renewable energy Wide area measurement system(WAMS) Cyber attack

Kinetics of oxidative coupling of methane:Bridging the gap between comprehension and description

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Journal of Natural Gas Chemistry 2009年第3期18卷 273-287页

作者： Mikhail Sinev Zukhra Fattakhova vladimir Lomonosov Yurii Gordienko Semenov Institute of Chemical Physics ZAO "SCHAG" Company

The development of notions about the mechanism of the oxidative coupling of methane （OCM） over oxide catalysts and corresponding progress in its kinetic description are reviewed and discussed. The latter becomes essential at the stage of scaling up and optimization of the process in pilot and industrial reactors. It is demonstrated that the main achievements in the development of kinetic models can be reached by combining the approaches conventionally used in homogeneous gas-phase kinetics and in heterogeneous catalysis. In particular, some important features of the OCM process can be described if several elementary reactions of free radical species （formation and transformation） with surface active sites are included into the detailed scheme of methane oxidation in gas. However, some important features, such as a non-additive character of the reciprocal influence of methane and ethane in the case of their simultaneous presence in the reaction mixture, cannot yet be described and comprehended in the framework of schemes developed so far. Possible ways towards an advanced kinetic model, accounting the main principles of catalyst functioning （redox nature of active sites） and pathways of product formation （via free radicals） are traced.

关键词： natural gas methane oxidative coupling of methane ethane ethylene kinetics mechanism rate equations

Analysis of Bingham fluid radial flow in smooth fractures

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第5期12卷 1112-1118页

作者： Liangchao Zou Ulf Håkansson vladimir Cvetkovic Division of Resources Energy and InfrastructureDepartment of Sustainable DevelopmentEnvironmental Science and EngineeringRoyal Institute of TechnologyStockholm10044Sweden Division of Soil and Rock Mechanics Department of Civil and Architectural EngineeringRoyal Institute of TechnologyStockholm10044Sweden Skanska Sweden AB Stockholm11274Sweden

Solutions for radial flow of a Bingham fluid are analyzed in this *** aims to eliminate confusions in the literature concerning the plug flow region in different solutions for analysis and design of grouting in rock *** analyses based on the force balance equation reveal that the plug flow region in Bingham radial flow is independent of the fracture radius,and is not a growth function adapted from the solution of one-dimensional(1D)slit flow according to‘similarity’.Based on the shear stress distribution,we analytically proposed that a non-uniform plug flow region cannot *** Bingham fluid(grout)penetration and flowrate evolution as functions of grouting time are given using the correct expression for the plug flow *** radius-independent plug flow region and the presented flowrate evolution equation are also verified *** radial flow,the relative penetration length is equal to the relative width of plug flow region,which is the same as that for 1D channel *** in analytical solutions for grout penetration and flowrate evolution were also *** clarification of the plug flow region and evaluation of discrepancies in analytical solutions presented in this work could simplify modeling and design of grouting in rock engineering applications.

关键词： Rock grouting Radial flow of Bingham fluids Plug flow region Force balance Energy dissipation Analytical solution