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A POSITIVE AND MONOTONE NUMERICAL SCHEME FOR VOLTERRA-RENEWAL EQUATIONS WITH SPACE FLUXES

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Journal of Computational Mathematics 2019年第1期37卷 33-47页

作者： Mario Annunziato Eleonora messina Dipartimento di Matematica Universita degli Studi di Salerno Via G.Paolo II 132.84084 Fisciano (SA)Italy Dipartimento di Matematica e Applicazioni "R.Caccioppoli" Universita degli Studi di Napoli "Federico II"Via CintiaMonte S.Angelo80126 NapoliItaly

We study a numerical method for solving a system of Volterra-renewal integral equations with space fluxes,that represents the Chapman-Kohnogorov equation for a class of piecewise deterministic stochastic *** solution of this equation is related to the time dependent distribution function of the stochastic process and it is a non-negative and non-decreasing function of the *** on the Bernstein polynomials,we build up and prove a non-negative and non-decreasing numerical method to solve that equation, with quadratic convergence order in space.

关键词： Volterra renewal Piecewise deterministic process Monotone positive numerical scheme Bernstein polynomials

Cross-industry standard test method developments：from manufacturing to wearable robots

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Frontiers of Information Technology & Electronic Engineering 2017年第10期18卷 1447-1457页

作者： Roger BOSTELMAN Elena messina Sebti FOUFOU National Institute of Standards and Technology GaithersburgMD 20899USA Le2i Universite de BourgogneDijon 21078France College of Engineering Qatar UniversityDoha 2713Qatar

Manufacturing robotics is moving towards human-robot collaboration with light duty robots being used side by side with workers. Similarly, exoskeletons that are both passive(spring and counterbalance forces) and active(motor forces) are worn by humans and used to move body parts. Exoskeletons are also called ‘wearable robots' when they are actively controlled using a computer and integrated sensing. Safety standards now allow, through risk assessment, both manufacturing and wearable robots to be used. However, performance standards for both systems are still lacking. Ongoing research to develop standard test methods to assess the performance of manufacturing robots and emergency response robots can inspire similar test methods for exoskeletons. This paper describes recent research on performance standards for manufacturing robots as well as search and rescue robots. It also discusses how the performance of wearable robots could benefit from using the same test methods.

关键词： Wearable robot Exoskeleton Cross-industry Artifact Standards Grasping

Generation of Pair Coherent States in Two Dimensional Trapped Ion

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Chinese Physics Letters 2001年第3期18卷 367-369页

作者： WANG Kai-Ge S Maniscalco A Napoli A messina Department of Physics Beijing Normal UniversityBeijing 100875 INFM and Dipartimento di Scienze Fisiche ed Astronomiche dell’Universitädi Palermo Palermo 90123Italy

We consider a two-dimensional(2D)trapped ion model in which two laser beams drive the corresponding vibrational motions and are carrier resonant with the two-level of the *** to the coherent superposition of two sub-Rabi oscillations involved in the bimodal vibrations,the Rabi frequency degeneration and offset may occur in this *** provides a possibility to generate the pair coherent state in the 2D trapped ion.

关键词： coherent degeneration modal

Evaluating Group Formation in Virtual Communities

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IEEE/CAA Journal of Automatica Sinica 2020年第4期7卷 1003-1015页

作者： Giancarlo Fortino Antonio Liotta Fabrizio messina Domenico Rosaci Giuseppe MLSarnè the DIMES Department of the University of Calabria Rende 87036Italy the School of Computing Edinburgh Napier UniversityEdinburgh EH105DTU.K. the Department of Mathematics and Informatics University of CataniaCatania 95125Italy the DIIES Department University of Reggio CalabriaLoc.Feo di Vito89122 Reggio Cal.Italy the Department DICEAM University Mediterranea of Reggio CalabriaLoc.Feo di Vito89122 Reggio Cal.Italy

In this paper, we are interested in answering the following research question: "Is it possible to form effective groups in virtual communities by exploiting trust information without significant overhead, similarly to real user communities?"In order to answer this question, instead of adopting the largely used approach of exploiting the opinions provided by all the users of the community(called global reputation), we propose to use a particular form of reputation, called local reputation. We also propose an algorithm for group formation able to implement the proposed procedure to form effective groups in virtual communities. Another interesting question is how to measure the effectiveness of groups in virtual communities. To this aim we introduce the index in a measure of the effectiveness of the group formation. We tested our algorithm by realizing some experimental trials on real data from the real world EPINIONS and CIAO communities, showing the significant advantages of our procedure w.r.t. another prominent approach based on traditional global reputation.

关键词： Group formation helpfulness online social communities reputation trust

COEXISTENCE FOR MULTIPLE LARGEST REPRODUCTION RATIOS OF A MULTI-STRAIN SIS EPIDEMIC MODEL

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Acta Mathematica Scientia 2016年第5期36卷 1524-1530页

作者： Yoshiaki MUROYA Eleonora messina Elvira RUSSO Antonia VECCHIO Department of Mathematics Waseda University Dipartimento di Matematica e Applicazioni Università degli Studi di Napoli "Federico Ⅱ"-Via Cintia Istituto per Applicazioni del Calcolo "M. Picone" Sede di Napoli-CNR-Via P.Castellino

In this paper, to complete the global dynamics of a multi-strains SIS epidemic model, we establish a precise result on coexistence for the cases of the partial and complete duplicated multiple largest reproduction rat... 详细信息

关键词： multi-strains SIS epidemic model global attractivity Lyapunov function coexistence

Advances in Microgeophysics for Engineering and Cultural Heritage

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Journal of China University of Geosciences 2009年第3期20卷 626-639页

作者： P L Cosentino P Capizzi G Fiandaca R Martorana P messina Department of Chemistry and Physics of the Earth and Applications to Geo-Resources and Natural Risks Geophysical Section University of PalermoPalermo Italy

A large number of unconventional investigations have been implemented, tested, and validated in the field of microgeophysics, with the aim being to solve specific diagnostic and/or monitoring problems regarding civil engineering and cultural heritage studies. The investigations were carried out using different tomographic 2D and 3D approaches as well as different energy sources, namely sonic, ultrasonic and electromagnetic （radar） waves, electric potential fields, and infrared thermography. Many efforts have been made to modify instruments and procedures in order to improve the resolution of the surveys as well as to greatly reduce the time of the measurements without any loss of information. The main new methodologies here discussed are the sonic imprint, the global tomographic traveltime, the electrical resistivity tomography, and the control of external films （patinas） grown on stone monuments. The results seem to be very promising and suggest that it is the moment to dedicate time and effort to this new branch of geophysics, so that these methodologies can be used even more to diagnose, monitor, and safeguard not only engineering buildings and large structures but also ancient monuments and cultural artifacts, like pottery, statues, etc..

关键词： microgeophysics engineering cultural heritage tomography electrical sonic ultrasonic ground penetrating radar (GPR).

Characterising acute ischaemic stroke thrombi:insights from histology,imaging and emerging impedance-based technologies

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Stroke & Vascular Neurology 2022年第4期7卷 353-363页

作者： Smita Patil Jean Darcourt Pierluca messina Franz Bozsak Christophe Cognard Karen Doyle CÚRAM SFI Research Centre for Medical DevicesNational University of Ireland GalwayGalwayIreland Neuroradiology CHU de ToulouseToulouseFrance Sensome MassyFrance Physiology National University of Ireland GalwayGalwayIreland

Treatment of acute ischaemic stroke(AIS)focuses on rapid recanalisation of the occluded *** recent years,advent of mechanical thrombectomy devices and new procedures have accelerated the analysis of thrombi retrieved during the endovascular thrombectomy *** ongoing developments and progress in AIS imaging techniques,it is not yet possible to conclude definitively regarding thrombus characteristics that could advise on the probable efficacy of thrombolysis or thrombectomy in advance of *** devices with dignostic capabilities or new clinical imaging approaches are needed for better treatment of AIS *** this review,what is known about the composition of the thrombi that cause strokes and the evidence that thrombus composition has an impact on success of acute stroke treatment has been *** review also discusses the evidence that AIS thrombus composition varies with aetiology,questioning if suspected aetiology could be a useful indicator to stroke physicians to help decide the best acute course of ***,this review discusses the evidence that current widely used radiological imaging tools can predict thrombus *** use of new emerging technologies based on bioimpedance,as imaging modalities for diagnosing AIS and new medical device tools for detecting thrombus composition in situ has been *** bioimpedance would be beneficial for gaining new insights into in situ thrombus composition that could guide choice of optimum treatment approach is also reviewed.

关键词： throm acute impedance

BRAIN TUMORS OF THE FIRST YEAR OF LIFE:CLINICAL AND SURGICAL MANAGEMENT

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Chinese Journal of Cancer Research 1989年第3期1卷 46-49页

作者： Locatelli D messina.a.L Bonfanti N Pezzotta S Clinica Neurochirurgica IRCCS Policlinico S Matteo Pavia ItalyClinica Neurochirurgica IRCCS Policlinico S Matteo Pavia ItalyClinica Neurochirurgica IRCCS Policlinico S Matteo Pavia ItalyDepartment of Surgery Neurosurgical Section Pavia University Pavia Italy

Brain tumors incidence in pediatric age hasbeen estimated between 1.3 to 5% with a relativeincidence of 1.4 to 11% during the first year oflife; the improvement in instrumental deviceshas lead to a relative increase in precocious diag-nosis. The choice to study brain tumors of the firstyear of life as a separate topic from pediatric ageones depends on the observation that these le-sions have peculiar clinical, topographic and tis-sular characteristics. The survival rate of thesepatients is very poor if compared with that found

关键词： BRAIN TUMORS OF THE FIRST YEAR OF LIFE

ResIoT:An IoT Social Framework Resilient to Malicious Activities

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IEEE/CAA Journal of Automatica Sinica 2020年第5期7卷 1263-1278页

作者： Giancarlo Fortino Fabrizio messina Domenico Rosaci Giuseppe M.L.Sarnè IEEE the Department DIMES University of CalabriaVia P.Bucci87036 Rende(CS)Italy the Department DMI University of CataniaViale Andrea Doria 695126 Catania(CT)Italy the Department DIIES University MediterraneaLoc.Feo di Vito89122 Reggio Cal.(RC)Italy the Department DICEAM University MediterraneaLoc.Feo di Vito89122 Reggio Cal.(RC)Italy

The purpose of the next internet of things(Io T)is that of making available myriad of services to people by high sensing intelligent devices capable of reasoning and real time *** convergence of Io T and multi-agent systems(MAS)provides the opportunity to benefit from the social attitude of agents in order to perform machine-to-machine(M2 M)cooperation among smart ***,the selection of reliable partners for cooperation represents a hard task in a mobile and federated context,especially because the trustworthiness of devices is largely *** issues discussed above can be synthesized by recalling the well known concept of social resilience in Io T systems,i.e.,the capability of an Io T network to resist to possible attacks by malicious agent that potentially could infect large areas of the network,spamming unreliable information and/or assuming unfair *** this sense,social resilience is devoted to face malicious activities of software agents in their social interactions,and do not deal with the correct working of the sensors and other information *** this setting,the use of a reputation model can be a practicable and effective solution to form local communities of agents on the basis of their social *** this paper,we propose a framework for agents operating in an Io T environment,called Res Io T,where the formation of communities for collaborative purposes is performed on the basis of agent *** order to validate our approach,we performed an experimental campaign by means of a simulated framework,which allowed us to verify that,by our approach,devices have not any economic convenience to performs misleading ***,further experimental results have shown that our approach is able to detect the nature of the active agents in the systems(i.e.,honest and malicious),with an accuracy of not less than 11%compared to the best competitor tested and highlighting a high resilience with respect to some

关键词： Group formation internet of things(IoT) multiagent system reputation