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2d Ti_(3)c_(2)T_(x)MXene-derived self-assembled 3d Tio_(2)nanoflowers for nonvolatile memory and synaptic learning applications

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Journal of Materials Science & Technology 2023年第19期150卷 1-10页

作者： Atul c.Khot Tukaram d.dongale Kiran A.Nirmal Jayan K.deepthi Santosh S.Sutar Tae Geun Kim School of Electrical Engineering Korea UniversityAnam-ro 145Seongbuk-guSeoul 02841Republic of Korea computational Electronics and Nanoscience Research Laboratory School of Nanoscience and BiotechnologyShivaji UniversityKolhapur 416004India Rajagiri School of Engineering and Technology(Autonomous) Rajagiri ValleyKakkanadKochiKerala 682039India Yashwantrao chavan School of Rural development Shivaji UniversityKolhapur 416004India

Two-dimensional(2d)semiconducting materials and transition-metal oxides are promising materials for nonvolatile memory and brain-inspired neuromorphic computing ***,it remains chal-lenging to obtain high-quality stacked 2d films with low energy consumptions(or drive currents)be-cause of their high interfacial *** this study,we synthesized 2d Ti_(3)c_(2)T_(x)MXene-derived three-dimensional(3d)Tio_(2)nanoflowers(NFs)as a feasible resistive switching(RS)material with outstanding electronic properties and synaptic learning *** electrical and optical characteristics of the synthesized material were determined through density func.ional theory *** measure-ments of the Al/Ti_(3)c_(2)T_(x)-Tio_(2)NF/Pt memory device indicated the occurrence of forming-free switching phenomena with extremely low switching voltages(0.68-0.53 V),stable ON/OFF ratio(2.3×103),and retention greater than 105 *** Holt-Winters exponential smoothing technique was used for mod-eling and predicting the switching voltages of the RS *** mechanism underlying the reliable RS was confirmed by observing the dense conductive filaments through conductive atomic force ***,the 2d Ti_(3)c_(2)T_(x)MXene-derived 3d Tio_(2)NF-based RS device mimicked the po-tentiation/depression and spike-time-dependent plasticity of a biological ***,a convolutional neural network was implemented based on the observed synaptic weights of Al/Ti_(3)c_(2)T_(x)-Tio_(2)NF/Pt for image-edge detec.ion.

关键词： MXene Ti_(3)c_(2)T_(x)-Tio_(2)nanoflowers Resistive switching Synaptic learning density func.ional theory Time-series analysis

digital Twins and cyber Physical Systems toward Smart Manufacturing and Industry 4.0:correlation and comparison

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Engineering 2019年第4期5卷 653-661页

作者： Fei Tao Qinglin Qi Lihui Wang A.Y.c.Nee School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100083China department of Produc.ion Engineering KTH Royal Institute of TechnologyStockholm SE-10044Sweden department of Mechanical Engineering National University of SingaporeSingapore 117575Singapore

State-of-the-art technologies such as the Internet of Things(ioT),cloud computing(cc),big data analytics(BdA),and artificial intelligence(AI)have greatly stimulated the development of smart *** important prerequisite for smart manufacturing is cyber-physical integration,which is increasingly being embraced by *** the preferred means of such integration,cyber-physical systems(cPS)and digital twins(dTs)have gained extensive attention from researchers and practitioners in *** feedback loops in which physical processes affect cyber parts and vice versa,cPS and dTs can endow manufacturing systems with greater efficiency,resilience,and *** and dTs share the same essential concepts of an intensive cyber-physical connec.ion,real-time interac.ion,organization integration,and in-depth ***,cPS and dTs are not identical from many perspectives,including their origin,development,engineering practices,cyber-physical mapping,and core *** order to highlight the differences and correlation between them,this paper reviews and analyzes cPS and dTs from multiple perspectives.

关键词： cyber–physical systems(cPS) digital twin(dT) Smart manufacturing correlation and comparison

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电气扑鱼(续完)

中国水产 1960年第8期 36-37页

作者： io.c.谢尔盍也夫张友声

海水比淡水具有更高的导电性。所以在海水中进行电气捕鱼，虽然其捕鱼的基本原理是一样的，但技术问题则复杂得多。

关键词：电报捕鱼捕捞方法海水淡水导电性幼鲑

comment on “Locating the source field lines of Jovian decametric radio emissions” by YuMing Wang et al.

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Earth and Planetary Physics 2022年第1期6卷 10-12页

作者： Laurent Lamy Baptiste cecconi Stéphane Aicardi c.K.Louis LESIA Observatoire de ParisUniversitéPSLCNRSSorbonne UniversitéUniversitéde Paris5 place Jules Janssen92195 MeudonFrance Station de Radioastronomie de Nançay Observatoire de ParisUniversitéPSLCNRSUniv.Orléans18330 NançayFrance LAM PythéasAix Marseille UniversitéCNRSCNES38 Rue Frédéric Joliot Curie13013 MarseilleFrance dio UMS2201 CNRSObservatoire de ParisUniversitéPSL61 avenue de l’Observatoire75014ParisFrance School of cosmic Physics DIAS Dunsink ObservatoryDublin Institute for Advanced StudiesDublinIreland

In this comment on the article“Locating the source field lines of Jovian decametric radio emissions”by Wang YM et al.,2020,we discuss the assumptions used by the authors to compute the beaming angle of Jupiter’s decametric emissions induced by the moon *** method,relying on multi-point radio observations,was applied to a single event observed on 14th March 2014 by Wind and both STEREO A/B spacecraft from~5 to~16 *** have erroneously identified the emission as a northern(io-B type)instead of a southern one(io-d type).We encourage the authors to update their results with the correct hemisphere of origin and to test their method on a larger sample of Jupiter-io emissions.

关键词： planetary magnetosphere Jupiter auroral radio emissions planet-moon interac.ion

Machine Learning Models of Plastic Flow Based on Representation Theory

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computer Modeling in Engineering & Sciences 2018年第12期117卷 309-342页

作者： R.E.Jones J.A.Templeton c.M.Sanders J.T.Ostien Sandia National Laboratories P.O.Box 969LivermoreCA 94551USA.

We use machine learning(ML)to infer stress and plastic flow rules using data from representative polycrystalline *** particular,we use so-called deep(multilayer)neural networks(NN)to represent the two response *** ML process does not choose appropriate inputs or outputs,rather it is trained on selected inputs and ***,its discrimination of features is crucially connected to the chosen inputoutput ***,we draw upon classical constitutive modeling to select inputs and enforce well-accepted symmetries and other *** the context of the results of numerous simulations,we discuss the design,stability and accuracy of constitutive NNs trained on typical experimental *** these developments,we enable rapid model building in real-time with experiments,and guide data collec.ion and feature discovery.

关键词： Machine learning constitutive modeling plasticity invariance.

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放射性碘在盐环境中的吸附和迁移行为

复旦学报（自然科学版） 1989年第2期28卷 221-226页

作者：毛家骏 c.d. Keiling G. Marx 复旦大学西柏林自由大学

使用放射性指示剂,分别测定了AgI和Agio_3在各种浓盐溶液中的溶解度。采用间歇平衡实验,测试了在不同浓盐溶液中水泥、不锈钢腐蚀产物和天然岩盐(Na_3r)对I^-和io_3^-的吸附性能,并计算了它们的吸附比。柱迁移实验与间歇平衡实验所得的... 详细信息

使用放射性指示剂,分别测定了AgI和Agio_3在各种浓盐溶液中的溶解度。采用间歇平衡实验,测试了在不同浓盐溶液中水泥、不锈钢腐蚀产物和天然岩盐(Na_3r)对I^-和io_3^-的吸附性能,并计算了它们的吸附比。柱迁移实验与间歇平衡实验所得的结果一致。结果表明,在所研究的体系中,上述几种物质对I-均不吸附,但在强碱性浓盐溶液中,水泥能较好地吸附io_3^-。

关键词：碘吸附迁移盐溶液放射性

Spectral measurements of hypervelocity flow in an expansion tunnel

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Acta Mechanica Sinica 2019年第1期35卷 24-31,I0002页

作者： c.K.Yuan K.Zhou Y.F.Liu Z.M.Hu Z.L.Jiang State Key Laboratory of High-Temperature Gas dynamic Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Engineering Sciences. University of chinese Academy of Sciences Beijing 100049China china Academy of Aerospace Aerodynamics Beijing 100074China

Atmospheric reentry vehicles and planetary probes fly through the atmosphere at hypervelocity speed. At such speed, there is a significant proportion of heat load to the vehicle surface due to radiative heating. Accurate predic.ion needs a good knowledge of the radiation spectrum properties. In this paper, a high-speed camera and spectrograph coupled to an intensified charge-coupled device have bee n impleme nted to inv estigate the rad i at io n flow over a semi-cylinder model. The experiments were carried out in the JF16 expansi on timnel with secondary shock velocity of 7.9 km·s^-1. Results show that the emissio n spectrum comprises several atomic lines and molecular band systems. We give detailed data of the radiation spectrum, shock shape, shock detached distance and radiation intensity varying with space and wavelength. This valuable experimental dataset will be helpful to validate computational fluid dynamics codes and radiation models, which equates to increased predic.ion accuracy of radiation heating. Also, some suggestions for spectral measurement in hypervelocity flow field were list in the end.

关键词： Spectral measurement Hypervelocity flow Radiation Expansion tunnel

A regionalized io-model to value seasonal recreational ecosystem services in a mountain National Park in Spain

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Journal of Mountain Science 2022年第1期19卷 211-227页

作者： Víctor MARTIN BARROSO Mónica de cASTRO-PARdO Pascual FERNÁNdEZ MARTÍNEZ João c.AZEVEdO department of Applied Economics I and history and economic institutions Faculty of Law and Social SciencesUniversidad Rey Juan CarlosCampus of VicálvaroTulipanMóstoles 28933Spain department of Financial and Actuarial Economics and Statistics-Statistics and Operational Research Complutense University of MadridCampus of SomosaguasPozuelo de Alarcon 28223Spain centro de Investigação de Montanha Instituto Politécnico de BragançaCampus de Santa ApolóniaBragança 5300-253Portugal

Recreational Ecosystem Services(RES)are among the most frequently evaluated ecosystem *** are seen as a major opportunity for sustainable development in areas of high ecological value resulting from the presence of emblematic species,habitats or scenery,often integrated in conservation areas,in particular in mountain areas affected by depopulation,rising environmental risks and ***,the assessment of RES has been based on contingent Valuation and choice Experiments,methods with limitations related to their ***,Input-Output(io)models provide a very accurate and effective way of valuation of RES with regional information regarding interindustry *** data on nature tourist expenditure may be only available annually,tourism inflows have a strong seasonal behavior,which impacts the profitability of several local economic *** this paper,we firstly constructed a novel regionalized io-model based on cross-Industry Location Quotients using employment data and,secondly,based on Monte carlo simulation,we estimated nature tourist expenditure monthly using data on nature tourism *** method allowed for a more precise RES evaluation,estimating direct,indirect and induced monthly economic impacts of nature-based *** method was applied to the Ordesa and Monte Perdido(OMP)National Park in the Spanish *** estimate the average tourist expenditure,we collected and analyzed spending on commerce,hospitality and restaurants,leisure,and transport of 385 *** suggest that using a regionalized io model leads to a considerable reduc.ion of over-estimation of the economic impact of tourist expenditure estimated by conventional *** into consideration the direct,indirect and induced effects of tourist expenditure in 2016-2018,the total annual output effect in the OMP National Park amounted to€208.8 million,while the total income effect amounted to€86.29 ***,a total of

关键词： Input-Output Monte carlo Simulation Location quotients Recreational Ecosystem Services Nature tourism Sustainable mountain development

computing Paradigms in Emerging Vehicular Environments:A Review

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IEEE/cAA Journal of Automatica Sinica 2021年第3期8卷 491-511页

作者： Lion Silva Naercio Magaia Breno Sousa Anna Kobusińska António casimiro constandinos X.Mavromoustakis George Mastorakis Victor Hugo c.de Albuquerque department of computer Science Faculty of SciencesUniversity of LisbonLisbon 1749-016Portugal Laboratory of computing Science PoznańUniversity of TechnologyPoznan 60-965Poland department of computer Science University of NicosiaNicosia CY-2417Cyprus department of Management Science and Technology Hellenic Mediterranean UniversityAgios Nikolaos 72100Greece LAPIScO Federal Institute of EducationScience and Technology of CearáFortaleza 60750-740 ARMTEc Tecnologia em Robótica Fortaleza 60150000Brazil

determining how to structure vehicular network environments can be done in various ***,we highlight vehicle networks’evolution from vehicular ad-hoc networks(VANET)to the internet of vehicles(io Vs),listing their benefits and *** also highlight the reasons in adopting wireless technologies,in particular,IEEE 802.11 p and 5 G vehicle-toeverything,as well as the use of paradigms able to store and analyze a vast amount of data to produce intelligence and their applications in vehicular *** also correlate the use of each of these paradigms with the desire to meet existing intelligent transportation systems’*** presentation of each paradigm is given from a historical and logical *** particular,vehicular fog computing improves on the deficiences of vehicular cloud computing,so both are not exclusive from the application point of *** also emphasize some security issues that are linked to the characteristics of these paradigms and vehicular networks,showing that they complement each other and share problems and *** these networks still have many opportunities to grow in both concept and application,we finally discuss concepts and technologies that we believe are *** this work,we emphasize the crucial role of these concepts for the well-being of humanity.

关键词： computing paradigm cloud edge fog internet of vehicle(ioV) vehicular networks