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Traveling Wave-Guide channels of a New coupled Integrable Dispersionless System

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communications in Theoretical Physics 2012年第1期57卷 10-14页

作者： Abbagari Souleymanou victor K.Kuetche Thomas B.Bouetou Timoleon c.Kofane National Advanced School of Engineering University of Yaounde IP.O.Box 8390Cameroon department of Physics Faculty of ScienceUniversity of Yaounde IP.O.Box 812Cameroon department of Mathematics Faculty of ScienceUniversity of Yaounde IP.O.Box 812Cameroon

In the wake of the recent investigation of new coupled integrable dispersionless equations by means of the Darboux transformation [Zhaqilao,et al.,***.B 18(2009) 1780],we carry out the initial value analysis of the previous system using the fourth-order Runge-Kutta's computational *** a result,while depicting its phase portraits accordingly,we show that the above dispersionless system actually supports two kinds of solutions amongst which the localized traveling wave-guide *** addition,paying particular interests to such localized structures,we construct the bilinear transformation of the current system from which scattering amongst the above waves can be deeply studied.

关键词： dispersionaless equations Darboux transformation wave guide channels bilinear transformation

correlating the electronic structure of perovskite La_(1-x)SrxcoO_(3) with activity for the oxygen evolution reaction:The critical role of co 3d hole state

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Journal of Energy chemistry 2022年第2期31卷 637-645页

作者： Zechao Shen Mei Qu Jueli Shi Freddy E.Oropeza victor A.de la Peña O’Shea Giulio Gorni c.M.Tian Jan P.Hofmann Jun cheng Jun Li Kelvin H.L.Zhang State Key Laboratory of Physical chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina Photoactivated Processes Unit IMDEA Energy InstituteParque Tecnológico de MóstolesAvda.Ramón de la Sagra 328935 MóstolesMadridSpain cELLS-ALBA Synchrotron Carrer de la Llum 2-2608290 Cerdanyola del VallèsSpain Surface Science Laboratory Department of Materials and Earth SciencesTechnical University of Darmstadt Otto-Berndt-Strasse 364287 DarmstadtGermany

Perovskite LacoO_(3) is being increasingly explored as an effective low-cost electrocatalyst for the oxygen evolution reaction(OER).Sr doping in LacoO_(3)(La1-xSrxcoO_(3))has been found to substantially increase its catalytic *** this work,we report a detailed study on the evolution of the electronic structure of La1-xSrxcoO_(3) with 0≤x≤1 and its correlation with electrocatalytic activity for the OER.A combination of X-ray photoemission spectroscopy(XPS)and X-ray absorption spectroscopy(XAS)was used to unravel the electronic.density of states(DOS)near the Fermi level(EF),which provide insights into the key electronic structure features for the enhanced OER catalytic *** analysis on the co L-edge XAS suggest that LacoO_(3) has a low spin state with t_(2g)^(6) e_(g)^(0) configuration at room *** implies that the high OER catalytic activity of LacoO_(3) should not be rationalized by the occupancy of eg=1 *** Sr^(2+) for La^(3+) in LacoO_(3) induces co4+oxidation states and effectively dopes hole states into the top of valence band.A semiconductor-to-metal transition is observed for x>0.2,due to the holeinduced electronic DOS at the EF and increased hybridization between co 3 d and O 2 *** an electronic modulation enhances the surface adsorption of the*OH intermediate and reduces the energy barrier for interfacial charge transfer,thus improving the OER catalytic activity in La_(1-x)Sr_(x)coO_(3).In addition,we found that the La_(1-x)Sr_(x)coO_(3) surface undergoes amorphization after certain period of OER measurement,leading to a partial deactivation of the *** Sr doping levels accelerated the amorphization process.

关键词： Perovskite oxide Oxygen evolution cobalt Electronic structure

Blockchain-Assisted Secure Fine-Grained Searchable Encryption for a cloud-Based Healthcare cyber-Physical System

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IEEE/cAA Journal of Automatica Sinica 2021年第12期8卷 1877-1890页

作者： Mamta Brij B.Gupta Kuan-ching Li victor c.M.Leun Kostas E.Psannis Shingo Yamaguchi IEEE the department of computer Engineering National Institute of Technology the Asia University the Macquarie University the department of computer Science and Information Engineering Providence University the computer Science and Software Engineering Shenzhen University the University of British columbia the department of Applied Informatics University of Macedonia the Graduate School of Sciences and Technology for Innovation Yamaguchi University

The concept of sharing of personal health data over cloud storage in a healthcare-cyber physical system has become popular in recent times as it improves access *** privacy of health data can only be preserved by keeping it in an encrypted form,but it affects usability and flexibility in terms of effective ***-based searchable encryption(ABSE)has proven its worth by providing fine-grained searching capabilities in the shared cloud ***,it is not practical to apply this scheme to the devices with limited resources and storage capacity because a typical ABSE involves serious *** a healthcare cloud-based cyber-physical system(ccPS),the data is often collected by resource-constraint devices;therefore,here also,we cannot directly apply ABSE *** the proposed work,the inherent computational cost of the ABSE scheme is managed by executing the computationally intensive tasks of a typical ABSE scheme on the blockchain ***,it makes the proposed scheme suitable for online storage and retrieval of personal health data in a typical *** the assistance of blockchain technology,the proposed scheme offers two main ***,it is free from a trusted authority,which makes it genuinely decentralized and free from a single point of ***,it is computationally efficient because the computational load is now distributed among the consensus nodes in the blockchain ***,the task of initializing the system,which is considered the most computationally intensive,and the task of partial search token generation,which is considered as the most frequent operation,is now the responsibility of the consensus *** eliminates the need of the trusted authority and reduces the burden of data users,***,in comparison to existing decentralized fine-grained searchable encryption schemes,the proposed scheme has achieved a significant reduction in storage and computational cost for the secret

关键词： cloud-based cyber-physical systems(ccPS) data encryption healthcare information search and retrieval keyword search public-key cryptosystems searchable encryption

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LE BIEN ET LE MAL

法国研究 1985年第4期 26-30页

作者： Par Wang Tai Lai-La modernitéchez victor hugo…

Au cours de mis au point de ma présente étude,j′ai change de titrequi était decOUVERTE *** hésitation peut s′expli-quer par le fait que ma communication a été préparée à partir de deuxséries d′interrogati... 详细信息

关键词：责任编辑

Fully and Partly Divergence and Rotation Free Interpolation of Magnetic Fields

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Journal of Electromagnetic Analysis and Applications 2013年第7期5卷 281-287页

作者： victor-Otto de Haan BonPhysics Research and Investigations B.V. Laan van Heemstede 38 3297 AJ Puttershoek The Netherlands.

A new interpolation method for rotation and divergence free fields is presented. It is based on a suitable choice of a tricubic interpolation scheme and reaches an accuracy of third order in grid size (Δx). With the interpolation method it is possible to increase the accuracy with a factor of grid size/distance with respect to the trilinear interpolation method using exactly the same data points. Simulations for several distances of dipoles (r) to the interpolation area show that the maximum relative deviation is approximately 3(Δx/r)3 ppm.

关键词： Magnetic Fields Interpolation Magnetic Field Measurement

State and perspectives on flavonoid neuroprotection against aminochrome-induced neurotoxicity

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Neural Regeneration Research 2021年第9期16卷 1797-1798页

作者： victor Silva Juan Segura-Aguilar Laboratory of Neurochemistry and cell Biology Department of Biochemistry and BiophysicsInstitute of Health SciencesFederal University of Bahia40110-100SalvadorBahiaBrazil Molecular and clinical Pharmacology ICBMFaculty of MedicineUniversity of ChileChile

Parkinson's disease(PD) motor symptoms are induced by the loss of dopaminergic neurons containing neuromelanin in the nigrostriatal system. The exact mechanism that triggers the degeneration of the nigrostriatal neurons is still unknown but there is general consensus in the scientific community that mitochondrial dysfunction, alpha-synuclein aggregation to neurotoxic oligomers, protein degradation dysfunction of both lysosomal and proteasomal systems, endoplasmic reticulum stress.

关键词： degeneration reticulum aggregation

Anchor Vertex Selection for Enhanced Reliability of Traffic Offloading Service in Edge-Enabled Mobile P2P Social Networks

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Journal of communications and Information Networks 2020年第2期5卷 217-224页

作者： Hengda Zhang Xiaofei Wang Hao Fan Taotao cai Jianxin Li Xiuhua Li victor c.M.Leung college of Intelligence and computing Tianjin UniversityTianjin 300350China School of Information Technology Deakin UniversityMelbourne 3217Australia School of Big Data and Software Engineering Chongqing UniversityChongqing 401331China department of Electrical and computer Engineering the University of British ColumbiaVancouverBC V6T 1Z4Canada

As the rapid growth of mobile social networks,mobile peer-to-peer(P2P)communications and mobile edge computing(MEc)have been developed to reduce the traffic load and improve the computation capacity of cellular ***,the stability of social network is largely ignored in the advances of P2P and MEc,which is related to the social relations between *** plays a vital role in improving the efficiency and reliability of traffic offloading *** this paper,we integrate an edge node and the nearby P2P users as a mobile P2P social network and introduce the problem of adaptive anchored(k,r)-core to maintain the stability of multiple mobile P2P *** aims to adaptively select and retain a set of critical users for each network,whose participation is critical to overall stability of the network,and allocate certain resource for them so that the maximum number of users of all networks will remain engaged and the traffic of cellular network can be *** called the retained users as anchor *** address it,we devise a peer-edge-cloud framework to achieve the adaptive allocation of *** also develop a similarity based onion layers anchored(k,r)-core(S-OLAK)algorithm to explore the anchor *** results based on a real large-scale mobile P2P data set demonstrate the effectiveness of our method.

关键词： traffic offloading service mobile P2P communications mobile edge computing anchored k-core problem adaptive allocation

Biogeographic diversification in Nolana(Solanaceae),a ubiquitous member of the Atacama and Peruvian deserts along the western coast of South America

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Journal of Systematics and Evolution 2009年第5期47卷 457-476页

作者： Michael O.DILLON victor QUIPUScOA SILVESTRE department of Botany The Field Museum1400 South Lake Shore DriveChicagoIL 60605USA departamento de Botánica Universidad Nacional de San Agustín

The present paper reconstructs the biogeographic diversification for Nolana L.f.(Solanaceae),a genus of 89 endemic species largely restricted to fog-dependent desert lomas formations of coastal Peru and *** efforts have reconstructed a phylogenetic estimate for Nolana using a combination of molecular ***,we expand on those results to examine hypotheses of biogeographic origins and diversification *** occupies habitats within a continuous coastal desert and forms a terrestrial archipelago of discrete "islands" unique in size,topography,and species *** locality contains at least one Nolana species and many contain multiple species in *** genus has a chilean origin,with the basal clades confined to chile with wide geographic and ecological *** contains two strongly supported clades,suggesting two introductions with subsequent radiation.A chilean clade of shrubby,small-flowered species appears to have had its origins from the same ancestors of the second line that radiated in Peru and northern *** galapagensis is endemic to the Islas Gala’pagos,with origins traced to Peruvian taxa with a divergence time of 0.35 *** of diversification over the past 4.02 mya in Nolana,in one of the driest habitats on Earth,suggest rapid adaptive radiation in several *** in Nolana may be attributed to characters that confer a competitive advantage in unpredictable and water-dependent environments,such as succulent leaf anatomy and ecophysiology,and the reproductive mericarp unique to *** processes affecting or shaping the biota of western South America are discussed.

关键词： Atacama desert biogeography chloroplast DNA LEAFY second intron Nolana Peruvian desert Solanaceae South America.

(In)visibilities About the Vulnerabilities of People with Visual Impairments to Disasters and climate change:A case Study in cuiabaá,Brazil

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International Journal of Disaster Risk Science 2022年第1期13卷 38-51页

作者： Giselly Gomes victor Marchezini Michele Sato Federal University of Mato Grosso(PPGE/UFMT) CuiabaMT 78060-900Brazil IcEMAT-Institute of the Blind of the State of Mato Grosso CuiabaMT 78058-340Brazil cemaden-National Early Warning and Monitoring center of Natural Disasters Avenida Altino BondesanDistrito de Eugenio de MeloSao Jose dos CamposSP 12247-016Brazil Doctorate Program on Earth System Science National Institute for Space ResearchSao Jose dos CamposBrazil Programa de Pos-Graduaao em desastres Naturais ICT/Unesp-CemadenSao Jose dos CamposBrazil

People with visual impairments(PwVI)represent a heterogeneous social group who often experience significant disabling barriers in exercising their rights throughout their life *** dimensions of vulnerability of PwVI to disasters and climate change is an important issue to reduce the culture of neglected *** date,few studies have analyzed visual impairment and disaster risk reduction(DRR)in the countries of Latin America and the *** exploratory qualitative research project analyzed how to include PwVI in the DRR policies of *** research question is:how can we include PwVI in the discussion of DRR and climate change?The response to this question is part of a joint effort that involved a university,a hazard monitoring agency,and three institutions that work with *** three main results of the project are:(1)a mapping method to identify the exposure of PwVI to landslides and floods,and to create tactile risk maps tailored to them;(2)incorporating the voices of PwVI regarding their vulnerabilities and capacities with respect to disasters and climate change,achieved through shared interaction during 15 face to face interviews and one workshop attended by 100 people;and(3)an initiative of inclusive education to reduce some of the disabling barriers that intensify vulnerability.

关键词： Brazil climate injustice Disaster risk Environmental education Inclusive education Sight impairment