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Machine learning-based zero-touch network and service management:a survey

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Digital Communications and Networks 2022年第2期8卷 105-123页

作者： Jorge Gallego-Madrid Ramon Sanchez-Iborra pedro M.Ruiz Antonio F.Skarmeta Department of Information and Communication Engineering University of Murcia30100MurciaSpain Department of Engineering and Applied Techniques University Center of Defense30729San Javier Air Force BaseSpain

The exponential growth of mobile applications and services during the last years has challenged the existing network ***,the arrival of multiple management solutions to cope with this explosion along the end-to-end network chain has increased the complexity in the coordinated orchestration of different segments composing the whole *** Zero-touch Network and Service Management(ZSM)concept has recently emerged to automatically orchestrate and manage network resources while assuring the Quality of Experience(QoE)demanded by *** Learning(ML)is one of the key enabling technologies that many ZSM frameworks are adopting to bring intelligent decision making to the network management *** paper presents a comprehensive survey of the state-of-the-art application of ML-based techniques to improve ZSM *** this end,the main related standardization activities and the aligned international projects and research efforts are deeply *** this dissection,the skyrocketing growth of the ZSM paradigm can be ***,different standardization bodies have already designed reference architectures to set the foundations of novel automatic network management functions and resource *** with these advances,diverse ML techniques are being currently exploited to build further ZSM developments in different aspects,including multi-tenancy management,traffic monitoring,and architecture coordination,among ***,different challenges,such as the complexity,scalability,and security of ML mechanisms,are also identified,and future research guidelines are provided to accomplish a firm development of the ZSM ecosystem.

关键词： Zero-touch network and service management(ZSM) Next generation networks(NGN) Artificial intelligence(AI) Machine learning(ML)

Genomic characterization of multidrug-resistant extraintestinal pathogenic Escherichia coli isolated from grain culture soils

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Pedosphere 2022年第3期32卷 495-502页

作者： João pedro Rueda FURLAN Inara Fernanda Lage GALLO Eliana Guedes STEHLING Departamento de Análises Clínicas Toxicológicas e BromatológicasFaculdade de Ciências Farmacêuticas de Ribeirão PretoUniversidade de São PauloRibeirão PretoSão Paulo 14040-903(Brazil)

Multidrug-resistant(MDR)Escherichia coli,mainly extraintestinal pathogenic ***(ExPEC),has been widely reported in infections *** agricultural soils,manure is a hotspot for the dissemination of antimicrobial resistance genes(ARGs)and pathogenic bacteria;however,MDR bacteria have also been reported in soils with no history of manure *** addition,cross-resistance and co-resistance have been described as responsible for the metal-driven selection of bacteria resistant to ***,the aim of this study was to analyze three MDR *** isolates obtained from Brazilian grain culture soil samples with no history of manure use by whole-genome *** MDR *** isolates were recovered from soils from corn and coffee fields,and presented resistance toβ-lactams,quinolones,aminoglycosides,tetracyclines,sulphonamides,and dihydrofolate reductase *** analysis showed ARGs to several antimicrobials(i.e.,β-lactams,tetracyclines,aminoglycosides,sulphonamides,trimethoprim,phenicols,fosfomycin,and macrolides)as well as several metal resistance genes and antibacterial biocide resistance *** addition,known mutations in quinolone-resistance-determining regions of GyrA(Ser83Leu and Asp87Asn),ParE(Ser458Thr),and ParC(Ser80Ile)were also *** analysis showed the presence of virulence genes(lpfA,mcmA,gad,mchF,iroN,cma,and iss)associated with ***-resistant ExPEC isolates were assigned to phylogenetic group *** presence of MDR B1-ExPEC in soil samples shows the ability of these isolates to survive in *** study reports for the first time some sequence types(i.e.,ST345,ST448,and ST1146)of MDR *** in Brazilian ***,these findings contribute to the monitoring of antimicrobial resistance and surveillance studies based on whole-genome sequencing worldwide.

关键词： antimicrobial resistance gene metal resistance gene molecular typing whole-genome sequencing

Radiation Tolerant Viterbi Decoders for On-Board Processing(OBP) in Satellite Communications

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China Communications 2020年第1期17卷 140-150页

作者： Zhen Gao Lina Yan Jinhua Zhu Ruishi Han Ullah Anees Reviriego pedro School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China Department of Electrical and Computer Engineering Sir Syed CASE Institute of TechnologyIslamabad 44000Pakistan Universidad Carlos III de Madrid Av.Universidad 30LeganésMadrid 28005Spain

Modern satellite communication systems require on-board processing(OBP)for performance improvements,and SRAM-FPGAs are an attractive option for OBP ***,SRAM-FPGAs are sensitive to radiation effects,among which single event upsets(SEUs)are important as they can lead to data corruption and system *** paper studies the fault tolerance capability of a SRAM-FPGA implemented Viterbi decoder to SEUs on the user *** and fault injection experiments are conducted to verify that over 97%of the SEUs on user memory would not lead to output *** achieve a better reliability,selective protection schemes are then proposed to further improve the reliability of the decoder to SEUs on user memory with very small *** the results are obtained for a specific FPGA implementation,the developed reliability estimation model and the general conclusions still hold for other implementations.

关键词： viterbi decoder on-board processing FPGA user memory fault tolerance single event upsets

Physicians and Conflicts of Interest

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International Journal of Clinical Medicine 2014年第16期5卷 956-965页

作者： Deborah Pimentel Maria-Jesia Vieira Joao pedro Declerc FSNeves Manoel Juvenal da Costa-neto Lais Costa Souza Oliveira Department of Medicine Universidade Federal de SergipeAracajuBrazil Universidade Tiradentes AracajuBrazil Postgraduate Program in Health Sciences Universidade Federal de SergipeAracajuBrazil Universidade Federal de Sergipe AracajuBrazil

In medical practice, the most commonly observed conflicts of interest are the ones existing in the relations between professionals and industries linked to health or between the former and health services. These relations are no longer a partnership in search of the best to be offered to patients and tend to take up a commercial role, in a seduction game where, each one, in their own manner, seeks benefits. The purpose of this study is to analyze the existence of these conflicts of interest, in an exploratory and qualitative study, with physician focal groups. The results were grouped in two categories: benefits received by physicians and the justifications provided by them for the establishment of these partnerships. The most common benefits are: percentages over orthoses and prosthetics received by the industry;discounts and credits on rent or condominium fees for exam indications and procedures;rewards offered by the pharmaceutical industry for the indication of their products. Physicians have pointed out as main determinants for ethical missteps that involve conflicts of interest, the character and family formation as well as the lack of denunciations. The fact that efficient and widespread laws for resolution of conflicts of interest do not exist makes it necessary to recognize their existence with mechanisms of management and transparency, perhaps as the only way to avoid negative interference in physician behavior.

关键词： Ethics Physicians Conflicts of Interest

Patterns of fossil distributions within their environmental context from the Middle Triassic in South Canyon,Central Nevada,USA

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Journal of Palaeogeography 2014年第1期3卷 74-89页

作者： pedro M.Monarrez Nicole Bonuso Department of Geological Sciences California State University

The Middle Triassic records the return of diverse marine communities after the severe effects of the end-Permian mass *** diversification leads to the Mesozoic/modern adaptive radiation resulting in substantial changes in marine communities in comparison to their Paleozoic *** analysis focuses on the faunal abundance,ecological patterns,and environmental interpretation of a Middle Triassic section in Central *** bulk samples were *** fossils were identified and tallied from hand samples and thin-sections were used to aid in environmental *** in the Late Anisian,we observed an ammonoid dominated to flat-clam,epifaunal dominated benthic community within a muddy,quiet,inner shelf depositional *** time,epifaunal bivalves dominate within a middle shelf environment followed by an increase in infaunalization and *** this time the presence of oncoids and the reported finding of corals suggest the middle shelf environment gave way to a higher energy patch reef shelf edge ***,we observe epifaunal brachiopods communities at the top of our section deposited in a middle shelf *** sum,we observe the dominance of modern taxa(i.e.,bivalves)with Paleozoic ecologies(i.e.,epifaunal),followed by the dominance of modern taxa with Modern ecologies(i.e.,infaunal,thick shells)and then a return to Paleozoic taxa(i.e.,brachiopods)and Paleozoic ecologies within an overall transgressive environment.

关键词： biotic recovery Middle Triassic Star Peak Group Favret Formation Augusta Mountain Formation

A Simulation of Market-based Non-frequency Ancillary Service Procurement Based on Demand Flexibility

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Journal of Modern Power Systems and Clean Energy 2023年第3期11卷 781-792页

作者： Ricardo Faia Fernando Lezama Tiago Pinto pedro Faria Zita Vale José Manuel Terras Susete Albuquerque Research Group on Intelligent Engineering and Computing for Advanced Innovation and Development(GECAD) R.Dr.António Bernardino de Almeida4314249-015PortoPortugal E-REDES Distribuição de Eletricidade S.A.R.Camilo Castelo Branco43LisboaPortugal

This paper proposes a novel approach for the provision of non-frequency ancillary service(AS)by consumers connected to low-voltage distribution *** proposed approach considers an asymmetric pool-based local market for AS negotiation,allowing consumers to set a flexibility quantity and desired price to trade.A case study with 98 consumers illustrates the proposed market-based non-frequency AS provision ***,three different strategies of consumers’participation are implemented and tested in a real low-voltage distribution network with radial *** is shown that consumers can make a profit from the sale of their flexibility while contributing to keeping the network power losses,voltage,and current within pre-defined ***,the results demonstrate the value of AS coming directly from end-users.

关键词： Demand flexibility local electricity market ancillary service low-volatge distribution network

Numerical Study on Viscous Fingering Using Electric Fields in a Hele-Shaw Cell

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Communications in Computational Physics 2023年第2期33卷 399-424页

作者： Meng Zhao pedro Anjos John Lowengrub Wenjun Ying Shuwang Li Center forMathematical Sciences Huazhong University of Science and TechnologyWuhanHubei 430074China Department of AppliedMathematics Illinois Institute of TechnologyChicagoIL 60616USA Department of Mathematics University of California IrvineIrvineCA 92697USA School of Mathematical Sciences MOE-LSC and Institute of Natural SciencesShanghai Jiao Tong UniversityShanghai 200240China.

We investigate the nonlinear dynamics of amoving interface in aHele-Shaw cell subject to an in-plane applied electric *** develop a spectrally accurate numerical method for solving a coupled integral equation *** the stiffness due to the high order spatial derivatives can be removed using a small scale decomposition technique,the long-time simulation is still expensive since the evolving velocity of the interface drops dramatically as the interface *** remove this physically imposed stiffness by employing a rescaling scheme,which accelerates the slow dynamics and reduces the computational *** nonlinear results reveal that positive currents restrain finger ramification and promote the overall stabilization of *** the other hand,negative currents make the interface more unstable and lead to the formation of thin tail structures connecting the fingers and a small inner *** no fluid is injected,and a negative current is utilized,the interface tends to approach the origin and break up into several *** investigate the temporal evolution of the smallest distance between the interface and the origin and find that it obeys an algebraic law(t∗−t)b,where t∗is the estimated pinch-off time.

关键词： Hele-Shaw problem fingering instabilities electro-osmotic flow boundary integral method rescaling idea

Triglyceride levels and apolipoprotein E polymorphism in patients with acute pancreatitis

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Hepatobiliary & Pancreatic Diseases International 2012年第1期11卷 96-101页

作者： Radka Ivanova Susana Puerta Alfonso Garrido Ignacio Cueto Ana Ferro María José Ariza Andrés Cobos pedro González-Santos pedro Valdivielso Division of Internal Medicine Hospital Universitario "Virgen de la Victoria" Division of Gastroenterology Hospital Universitario "Virgen de la Victoria" CIMES Department of Medicine & Dermatology University of Malaga Division of Laboratory Hospital Universitario "Virgen de la Victoria"

BACKGROUND:Hypertriglyceridemia is an unusual cause of acute pancreatitis and sometimes considered to be an *** study aimed to investigate the clinical and analytical features and the APOE genotypes in patients with acute pancreatitis and severe ***:We undertook a one-year,prospective study of patients with acute pancreatitis whose first laboratory analysis on admission to the emergency department included measurement of serum *** APOE genotype was determined and the patients answered an established questionnaire within the first 24 hours concerning their alcohol consumption,the presence of co-morbidities and any medications being *** patients’ progression,etiological diagnosis,hospital stay and clinical and radiological severity were all ***:Hypertriglyceridemia was responsible for 7 of 133 cases of pancreatitis (5%);the remaining cases were of biliary (53%),idiopathic (26%),alcoholic (11%) or other (5%) *** with these remaining cases,the patients with hypertriglyceridemia were significantly younger,had more relapses,and more often had diabetes *** usually consumed alcohol or consumed it excessively on the days before ***,the ε4 allele of the APOE gene was more common in this group (P<0.05).CONCLUSION:One of 20 episodes of acute pancreatitis is caused by hypertriglyceridemia and it is linked to genetic (ε4 allele) and comorbid factors such as diabetes and,especially,alcohol consumption.

关键词： acute pancreatitis hypertriglyceridemia apolipoprotein E alcohol biliary lithiasis

Global Community of Disaster Risk Reduction Scientists and Decision Makers Endorse a Science and Technology Partnership to Support the Implementation of the Sendai Framework for Disaster Risk Reduction 2015–2030

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International Journal of Disaster Risk Science 2016年第1期7卷 108-109页

作者： Chloe Dickinson Amina Aitsi-Selmi pedro Basabe Chadia Wannous Virginia Murray Public Health England United Nations Office for Disaster Risk Reduction the UNISDR Science and Technology Conference on the Implementation of the Sendai Framework for Disaster Risk Reduction 2015–2030 the UNISDR Scientific and Technical Advisory Group(STAG)

At the first gathering of its kind on the role of science in implementing the Sendai Framework for Disaster Risk Reduction 2015–2030,over 750 scientists,policymakers,business people,and practitioners met in Geneva from January 27–29,*** UNISDR Science and Technology Conference on the Implementation of the Sendai Framework for Disaster Risk Reduction 2015–2030 fea-

关键词： work Global Community of Disaster Risk Reduction Scientists and Decision Makers Endorse a Science and Technology Partnership to Support the Implementation of the Sendai Framework for Disaster Risk Reduction 2015