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Addressing the CQI feedback delay in 5G/6G networks via machine learning and evolutionary computing

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Intelligent and Converged Networks 2022年第3期3卷 271-281页

作者： Andson Balieiro Kelvin dias Paulo Guarda Centro de Informática(CIn) Universidade Federal de PernambucoRecife 50740-560Brasil Motorola Mobility Mogi Mirim 13800-206Brazil

5G networks apply adaptive modulation and coding according to the channel condition reported by the user in order to keep the mobile communication ***,the delay incurred by the feedback may make the channel quality indicator(CQI)*** paper addresses this issue by proposing two approaches,one based on machine learning and another on evolutionary computing,which considers the user context and signal-to-interference-plus-noise ratio(SINR)besides the delay length to estimate the updated SINR to be mapped into a CQI *** proposals are designed to run at the user equipment(UE)side,neither requiring any change in the signalling between the base station(gNB)and UE nor overloading the *** are evaluated in terms of mean squared error by adopting 5G network simulation data and the results show their high accuracy and feasibility to be employed in 5G/6G systems.

关键词： channel quality indicator(CQI)feedback delay 5G/6G networks machine learning evolutionary computing

Biochar produced from Amazonian agro-industrial wastes:properties and adsorbent potential of Cd^(2+) and Cu^(2+)

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Biochar 2019年第4期1卷 389-400页

作者： Yan Nunes dias Edna Santos Souza Hercilia Samara Cardoso da Costa Leônidas Carrijo Azevedo Melo Evanise Silva Penido Cristine Bastos do Amarante Orivan Maria Marques teixeira Antonio Rodrigues fernandes Institute of Agricultural Sciences Federal Rural University of Amazon(ICA-UFRA)C.P.917BelemPara 66077-530Brazil Department of Soil Science Federal University of LavrasCP 3037Campus UFLALavrasMinas Gerais 37200-000Brazil Department of Chemistry Federal University of LavrasCP 3037Campus UFLALavrasMinas Gerais 37200-000Brazil Museu Paraense Emílio Goeldi Coordination of Earth Sciences and EcologyBelémPará66077-830Brazil Soil and Plant Laboratory Brazilian Agricultural Research Corporation-Embrapa Eastern AmazoniaBelémPará66000-000Brazil

In the Amazon region,several residues that have been misused can serve as feedstocks for biochar production with the aim of recovering soils contaminated by heavy ***,these biochars need to be firstly tested for their adsorption capacity as well as their physicochemical attributes prior to field ***,this study aimed to characterize and evaluate the adsorption capacities of Cd^(2+) and Cu^(2+) of biochars produced from acai(BA),Brazil nut(BN),and palm kernel cake(BK)*** were produced by slow pyrolysis at four different temperatures(400,500,600,and 700℃).The physicochemical properties of the biochars,such as cation exchange capacity,ash,recalcitrance index,and aromaticity were enhanced with increased pyrolysis *** adsorption capacities of Cd^(2+) and Cu^(2+) showed high correlations with the physicochemical properties of biochar,indicating the importance of these characteristics in the adsorption ***,the adsorption of Cd^(2+) and Cu^(2+) also increased with the increase in the pyrolysis *** a competitive system,Cd^(2+)exhibited higher adsorption capacity than Cu^(2+) for all *** general,BN showed the highest adsorption capacity,followed by BK and *** produced from the Amazonian residues have the potential to improve soil quality when used as amendments in the recovery of soils contaminated with Cd and Cu,representing an environmentally sound technology for the reuse of these residues.

关键词： Pyrolysis Environmental contamination Adsorption

Bayesian network model to distinguish between intentional attacks and accidental technical failures:a case study of floodgates

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Cybersecurity 2021年第1期4卷 442-460页

作者： Sabarathinam Chockalingam Wolter Pieters Andréteixeira Pieter van Gelder faculty of Technology Policy and ManagementDelft University of TechnologyDelftThe Netherlands Department of Risk Safety and SecurityInstitute for Energy TechnologyHaldenNorway Behavioural Science Institute Radboud UniversityNijmegenThe Netherlands Department of Electrical Engineering Uppsala UniversityUppsalaSweden

Water management infrastructures such as floodgates are critical and increasingly operated by Industrial Control Systems(ICS).These systems are becoming more connected to the internet,either directly or through the corporate *** makes them vulnerable to *** behaviour in floodgates operated by ICS could be caused by both(intentional)attacks and(accidental)technical *** operators notice abnormal behaviour,they should be able to distinguish between those two causes to take appropriate measures,because for example replacing a sensor in case of intentional incorrect sensor measurements would be ineffective and would not block corresponding the attack *** the previous work,we developed the attack-failure distinguisher framework for constructing Bayesian Network(BN)models to enable operators to distinguish between those two causes,including the knowledge elicitation method to construct the directed acyclic graph and conditional probability tables of BN *** a full case study of the attack-failure distinguisher framework,this paper presents a BN model constructed to distinguish between attacks and technical failures for the problem of incorrect sensor measurements in floodgates,addressing the problem of floodgate *** utilised experts who associate themselves with the safety and/or security community to construct the BN model and validate the qualitative part of constructed BN *** constructed BN model is usable in water management infrastructures to distinguish between intentional attacks and accidental technical failures in case of incorrect sensor *** could help to decide on appropriate response strategies and avoid further complications in case of incorrect sensor measurements.

关键词： Bayesian network DeMorgan model Intentional attack Probability elicitation Safety Security Technical failure Water management

Effect of Poly(ε-caprolactone-b-tetrahydrofuran)Triblock Copolymer Concentration on Morphological,Thermal and Mechanical Properties of Immiscible PLA/PCL Blends

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Journal of Renewable Materials 2019年第2期7卷 129-138页

作者： Paula do Patrocínio dias Marcelo Aparecido Chinelatto Department of Materials Engineering-Campus II São Carlos School of Engineering-EESCUniversity of São Paulo-USPAv.João Dagnone1100-Jd.Sta AngelinaSão Carlos-SP-Brazil

In this study a low molecular weight triblock copolymer derived fromε-caprolactone and tetrahydrofuran was used as a non-reactive compatibilizer of immiscible PLA/PCL *** blends with 0,1.5 wt%,3 wt%and 5 wt% copolymer and about 75 wt%PLA were prepared by single screw extrusion and characterized by scanning electron microscopy(SEM),differential scanning calorimetry(DSC),dynamic mechanical analysis(DMA),tensile and Izod impact *** micrographs showed that the size of the dispersed PCL domains was practically constant regardless of copolymer *** result can be explained by the low shear rate employed during processing step and a decrease of PCL viscosity by presence of the triblock ***,when the copolymer concentration increased,strain at break of PLA/PCL blends also ***/PCL blend with 0 wt% copolymer presented 2%strain at break,whereas PLA/PCL blend with 5 wt%copolymer exhibited 90%.

关键词： Blends non-reactive compatibilization poly(lactic acid) poly(ε-caprolactone) triblock copolymer

Characteristics of wave amplitude and currents in South China Sea induced by a virtual extreme tsunami

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Journal of Hydrodynamics 2017年第3期29卷 377-392页

作者：任智源赵曦王本龙 frédéric dias 刘桦 MOE Key Laboratory of Hydrodynamics School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China National Marine Environmental forecasting Center Beijing 100081China School of Mathematics and Statistics University College DublinDublinIreland

This paper investigates the potential extreme tsunami hazards of the worst case scenario of the magnitude M_w=9.30 in South China Sea（SCS）as the Manila Trench is becoming one of the most hazardous tsunami source *** nonlinear shallow water equations model,the time series of surface elevation,arrival time,spatial distributions of maximum wave amplitude and velocity distribution are *** characteristics of wave and currents are *** numerical results indicate that most of the energy of tsunami wave distributes in central and north part of *** offshore regions around SCS will be influenced significantly by the tsunami currents generated by an earthquake in the Manila subduction *** maximum wave amplitude near Guangdong Province,Hainan Island,and Taiwan Island exceeds 4 m and velocities at the majority of measured locations near coast exceeds 2 m/*** grid with high resolution is used to study the impacts of the tsunami on Hainan Island,Taiwan Island,and Lingding *** regions with high hazard risk due to strong currents are ***,a fast tsunami warning method in SCS is developed and discussed,which can provide tsunami warning information in 5 min.

关键词： Tsunami South China Sea(SCS) worst case scenario wave characteristic fast tsunami warning

The renin-angiotensin system,mood,and suicide:Are there associations?

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World Journal of Psychiatry 2021年第9期11卷 581-588页

作者： Marsal Sanches Antonio Lucio teixeira UT Center of Excellence on Mood Disorders Department of Psychiatry and Behavioral SciencesThe University of Texas Health Science Center at HoustonHoustonTX 77054United States UT Health Department of Psychiatry and Behavioral Sciences The University of Texas Health Science Center at HoustonHoustonTX 77054United States

Available evidence points to a possible role of the renin-angiotensin system(RAS)in the pathophysiology of mood disorders and *** carried out a critical analysis of literature data regarding this role,with a focus on the proposed association between RAS dysfunction and suicidal ***,genetic,and biochemical findings are described,and the pathophysiological hypothesis aiming at explaining the possible relationship between RAS and suicide are *** findings do support the involvement of the RAS in the neurobiology of suicide,although the exact mechanisms underlying this involvement are still unknown.

关键词： Renin-angiotensin system Suicide Mood disorders Depression Bipolar disorder

Renin-angiotensin system in the central nervous system:focus on Huntington’s disease

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Neural Regeneration Research 2023年第10期18卷 2206-2207页

作者： Aline Silva de Miranda Antonio Lucio teixeira Laboratório de Neurobiologia Departamento de MorfologiaInstituto de Ciências BiológicasUniversidade Federal de Minas Gerais(UFMG)Belo HorizonteMGBrasil Laboratório Interdisciplinar de Investigação Médica(LIIM) Faculdade de MedicinaUniversidade Federal de Minas Gerais(UFMG)Belo HorizonteMGBrasil Neuropsychiatry Program Department of Psychiatry and Behavioral SciencesMcGovern Medical SchoolUniversity of Texas Health Science Center at HoustonTXUSA faculdade Santa Casa BH Belo HorizonteMGBrasil

The renin-angiotensin system(RAS)was originally conceived as a circulating hormonal system involved in the regulation of cardiovascular and renal *** the discovery of local RAS components in diverse organs,including t... 详细信息

关键词： Huntington organs angiotensin

Geochemical study of submicron particulate matter(PM1)in a metropolitan area

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Geoscience frontiers 2022年第1期13卷 417-429页

作者： Ismael L.Schneider Elba C.teixeira Guilherme L.Dotto Diana Pinto Cheng-Xue Yang Luis f.O.Silva Postgraduate Program in Remote Sensing and Meteorology Universidade Federal do Rio Grande do SulAv.Bento Gonçalves9500 Porto AlegreRSBrazil Department of Civil and Environmental Universidad de la CostaCUCCalle 58#55-66BarranquillaAtlanticoColombia Research Department Fundação Estadual de Proteção Ambiental Henrique Luís RoesslerAv.Borges de Medeiros261Porto AlegreRSBrazil Chemical Engineering Department Federal University of Santa Maria97105-900 Santa MariaBrazil School of Earth Sciences and Resources China University of Geosciences BeijingBeijing 100083PR China Departamento de Ingeniería Civil y Arquitectura Universidad de LimaAvenida Javier Prado Este 4600–Santiago de Surco 1503Perú

Air pollution has become a major problem in urban areas due to increasing industrialization and *** this study ambient concentrations of PM1 and metal concentrations as well as source contributions were identified and quantified by using Positive Matrix factorization(PMf)in receptor modeling in the Metropolitan Area of Porto Alegre,*** PM1 samples were collected on PTfE filters from December 2012 to December 2014 in two sampling *** ion and trace element concentrations were *** average concentrations were 12.8 and 15.2μg/m^(3) for Canoas and Sapucaia do Sul sites,*** ion contributions of PM1 were secondary pollutants such as sulfate and *** elements,especially Cu,Pb,Zn,Cd,and Ni also made important contributions which are directly associated with anthropogenic *** results show significantly higher levels in winter than in *** of the PM1 and the analyzed PM species and elements originated from anthropogenic sources,especially road traffic,combustion processes and industrial activities,which are grouped in 7 major contributing sources.A back-trajectory analysis showed that the long-range transport of pollutants was not relevant in relation to the contribution to PM1 and metal *** work highlights the importance of urban planning to reduce human health exposure to traffic and industrial emissions,combined with awareness-raising actions for citizens concerning the impact of indoor sources.

关键词： PM1 Trace elements Source apportionment PMf Back trajectory

Intraspecific competition in Zabrotes subfasciatus： Physiological and behavioral adaptations to different amounts of host

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Insect Science 2012年第1期19卷 102-111页

作者： Isabel R.V.teixeira fernando S.Zucoloto Insect Nutrition and feeding Behavior Laboratory Department of BiologyFaculdade de Filosofia Ciencias e Letras de Ribeirao Preto Universidade de Sao PauloSao Paulo epartment of Biology Federal Institute of Sul de Minas-Campus MuzambinhoIFSULDEMINAS MuzambinhoMinas GeraisBrazil

The effects of competition on populations of the bean weevil Zabrotes sub- fasciatus were analyzed during 41 generations under different competition levels. Three competition environments were established by maintaining the number of couples （6） and varying the amount of available host seeds： HC, high （limited availability of host： 1.35 g）; IC, intermediate （intermediate availability of host： 6 g）; and LC, low competition （abun- dance of host： 36 g）. It was found that the distribution of the eggs laid on grains was different among treatments： in LC, for example, although females showed high fecundity （35.4 ± 5.6 eggs/female） the number of eggs laid on each grain was small （1.2 ± 0.4 eggs on each seed）, thus avoiding larval competition of their offspring; whereas in HC treatment, females showed low fecundity （27.04 ± 4.5 eggs/female） but laid many eggs on each grain （15.03 ± 4.3 eggs）. There were no changes in the ability to respond to different amounts of host via oviposition behavior （egg distribution） during 41 generations. How- ever, HC females had more offspring than LC females under HC conditions. This suggests that HC insects evolved toward higher fitness in crowded conditions. In addition, after inverting the competition level, insects behaved independently of the treatment conditions they experienced through generations, thus showing that oviposition behavior is flexible. Taken together, our results show that Z. subfasciatus presents a broad range of behavioral and physiological responses which allows for quick and reversible adjustments to sudden changes in the amount of resources.

关键词： bean weevil Coleoptera egg distribution oviposition Phaseolus vulgaris phenotypic plasticity