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An Ethereum-based solution for energy trading in smart grids

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Digital Communications and Networks 2023年第1期9卷 194-202页

作者： Francesco Buccafurri Gianluca Lax Lorenzo Musarella Antonia Russo Mediterranea University of Reggio Calabria DIIESReggio CalabriaItaly

The need for a flexible,dynamic,and decentralized energy market has rapidly grown in recent *** a matter of fact,Industry 4.0 and Smart Grids are pursuing a path of automation of operations to insure all the steps among consumers and producers are getting *** leads towards solutions that exploit the paradigm of public blockchain,which represents the best platform to design flat and liquid markets for which providing trust and accountability to mutual interactions becomes *** the other hand,one of the risks arising in this situation is that personal information is exposed to the network,with intolerable threats to *** this paper,we propose a solution for energy trading,based on the blockchain Ethereum and Smart *** solution aims to be a concrete proposal to satisfy the needs of energy trading in smart grids,including the important feature that no information about the identity of the peers of the network is disclosed in advance.

关键词： Blockchain Smart contract Accountability Smart energy Smart grids

An experimental method to design porous asphalts to account for surface requirements

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Journal of Traffic and Transportation Engineering(English Edition) 2021年第3期8卷 439-452页

作者： Filippo G.Pratico Paolo G.Briante Giuseppe Colicchio Rosario Fedele diies Department University“Mediterranea”of Reggio CalabriaReggio Calabria89100Italy

Porous asphalts have supplementary surface and volumetric properties(e.g., acoustic absorption, drain ability, texture, and friction). These properties are linked to intrinsic factors(e.g., gradation and bitumen content) and extrinsic factors(e.g., traffic load), while their evolution over time depends on complex phenomena and processes that cause their deterioration and therefore affect safety, noise, and budget. Despite the decay of so many and complex properties over time, there is a lack of criteria to synergistically optimize the pavement system. Consequently, the objective of this study is to set up and validate a design method that synergistically addresses the most relevant properties of friction courses as a part of a pavement structure. The abovementioned method is based on indept. analyses of the literature and on laboratory and on-site tests carried for several years in order to evaluate the decay over time of the main surface and volumetric *** show that (1) the level of fulfilment of single requirements varies over time and among the characteristics;(2) a sound optimization of the design of the mix in order to balance the different characteristics is needed;(3) further studies are needed because of uncertainty in predicting the main surface properties.

关键词： Road engineering Surface property Acoustic absorption Macrotexture Friction Porous asphalt

“Noisy”issues in road acoustics:A white paper

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Journal of Road Engineering 2022年第1期2卷 61-69页

作者： Filippo Giammaria Praticò diies Department University Mediterranea of Reggio CalabriaReggio Calabria 89124Italy

Despite almost a century of studies dealing with traffic noise,researchers and practitioners still face old and new issues when designing a low-noise *** that,this manuscript aims at focusing on a number of unsolved questions,namely theoretical or technological.1)Is it viable to balance diverse road-related needs(i.e.,noise,expected life,texture levels,and friction)?2)How much does the pavement material affect its acoustic performance(the remaining factors being constant)?3)How much reliable is the relationship between road texture and mixture aggregate gradation?Based on the analysis of these issues,it emerges that:1)optimal pavement design involves complex mix optimization and there are theoretical and practical bases to set up a balanced approach to address the complexity of pavement design;2)high percentages of crumb rubber could optimise road acoustic response but this latter has a relationship with the tyre/road noise(expressed,for example,in terms of close proximity index)that calls for further investigation;3)aggregate gradation appears to be a reliable basis to predict surface texture and therefore,under given boundary conditions,tyre/road noise;and 4)further studies and investigations are needed in terms of local calibration of deterioration curves and setting up of a sound method to assess the frequency response of asphalt concretes and to govern on-site noise indicators based on mixture properties.

关键词： Aggregate gradation Complex design Noise Surface texture Tyre/road interaction

Transport Costs in the Automotive Supply Chain

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Journal of Civil Engineering and Architecture 2014年第10期8卷 1304-1316页

作者： Domenico Gattuso Gian Carla Cassone Antonella Polimeni diies (Engineering Department of Information Infrastructures and Sustainable Energy) Mediterranea University of ReggioCalabria Reggio Calabria 89100 Italy

The study, carried out within the LogNet research project financed by Calabria region, deals with the analysis of the automotive supply chain. In particular, after a first examination of the characteristics of the whole automotive supply chain, attention was focussed on its final part, that is, on transport and end-market distribution. The paper proposes specific models, which are differentiated by the transport mode （road, rail, sea） they are involved, to estimate the temporal and monetary costs related to the activity of goods distribution to the compounds/end-clients. The proposed mode/ling formulations concern two different areas of investigation： the network segment and interchange nodes. Each cost item is also calculated through aggregate formulations （where the cost is function of a single significant variable in relation to a unit cost parameter） and disaggregate formulations （where each cost item is separately considered）. The models have been applied to a study carried out for the modal transfer of vehicles in the port of Gioia Tauro, south of Italy. The analysis has allowed, on the one hand, to calibrate certain models and, on the other, to simulate certain scenario hypotheses to verify the technical feasibility of a different structure for the automotive supply chain in Italy.

关键词： Automotive supply chain transport costs method and models.

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

Modelling and optical response of a compressive-strained AlGaN/GaN quantum well laser diode

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Journal of Semiconductors 2020年第6期41卷 29-34页

作者： A.Menani L.Dehimi S.Dehimi F.Pezzimenti Laboratory of Metallic and Semiconducting Materials(LMSM) Department of Electrical EngineeringBiskra UniversityBiskraAlgeria Faculty of Science Elhadj Lakhdar UniversityBatnalAlgeria Research Centre in Industrial Technology(CRTI) AlgiersAlgeria diies–Mediterranea University of Reggio Calabria Reggio CalabriaItaly

The effects of the quantum well(QW)width,carrier density,and aluminium(Al)concentration in the barrier layers on the optical characteristics of a gallium nitride(GaN)-based QW laser diode are investigated by means of a careful modelling analysis in a wide range of *** device’s optical gain is calculated by using two different band energy *** first is based on the simple band-to-band model that accounts for carrier transitions between the first levels of the conduction band and valence band,whereas the second assumes the perturbation theory(k.p model)for considering the valence intersubband transitions and the relative absorption losses in the *** results reveal that the optical gain increases with increasing the n-type doping density as well as the Al molar fraction of the AlxGa1–xN layers,which originate the GaN compressivestrained *** particular,a significant optical gain on the order of 5000 cm^-1 is calculated for a QW width of 40A at room *** addition,the laser threshold current density is of few tens of A/cm^2 at low temperatures.

关键词： laser diode quantum well optical gain threshold current temperature

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

Simulation analysis of a high efficiency GaInP/Si multijunction solar cell

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Journal of Semiconductors 2020年第3期41卷 54-58页

作者： M.Benaicha L.Dehimi F.Pezzimenti F.Bouzid Laboratory of Metallic and Semiconductor Materials University of BiskraBiskra 07000Algeria Faculty of Science University of BatnaBatna 05000Algeria diies-Mediterranea University of Reggio Calabria Reggio Calabria 89122Italy UDCMA-Research Center in Industrial Technologies Algiers 16014Algeria

The solar power conversion efficiency of a gallium indium phosphide(GaInP)/silicon(Si)tandem solar cell has been investigated by means of a physical device simulator considering both mechanically stacked and monolithic *** particular,to interconnect the bottom and top sub-cells of the monolithic tandem,a gallium arsenide(GaAs)-based tunnel-junction,***(n+)/GaAs(p+),which assures a low electrical resistance and an optically low-loss connection,has been *** J–V characteristics of the single junction cells,monolithic tandem,and mechanically stacked structure have been calculated extracting the main photovoltaic *** analysis of the tunnel-junction behaviour has been also *** mechanically stacked cell achieves an efficiency of 24.27%whereas the monolithic tandem reaches an efficiency of 31.11%under AM1.5 spectral *** quantum efficiency simulations have evaluated the useful wavelength *** results and discussion could be helpful in designing high efficiency monolithic multijunction GaInP/Si solar cells involving a thin GaAs(n+)/GaAs(p+)tunnel junction.

关键词： GaInP/Si tandem solar cells power efficiency numerical simulations

Model of Multi-Source Nanonetworks for the Detection of BRCA1 DNA Alterations Based on LSPR Phenomenon

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Advances in Nanoparticles 2013年第4期2卷 301-312页

作者： Renato Iovine Valeria Loscrí Sara Pizzi Richard Tarparelli Anna Maria Vegni Department of Engineering University of Roma Tre Rome Italy Dipartimento di Ingegneria dell’Informazione delle Infrastrutture e dell’Energia Sostenibile (DIIES) Mediterranea University of Reggio Calabria Reggio Calabria Italy Dipartimento di Ingegneria Informatica Modellistica (DIMES) Elettronica e Sistemistica University of Calabria Cosenza Italy

In this paper, we present a multi-source nanonetwork model for biomedical diagnosis applications, based on the Localized Surface Plasmon Resonance by different shape gold nanoparticles (i.e., cylinder, cube, and rod). We present the process of multi-source emission, diffusion, and reception of nanoparticles, based on the ligand/receptor binding. Then, a multi-detection process of DNA alterations is accomplished when nanoparticles are captured at the receiver. The colloidal particles are selectively functionalized with specific splice junctions of gene sequences to reveal simultaneously different alteration that could be associated to an early disease condition. Particularly, full-wave simulations have been carried out for the multi-detection of alternative splice junctions of breast cancer susceptibility gene 1. The proposed application is verified through numerical results and expressed in terms of Extinction-Cross Section, in the case of synchronous and asynchronous nanoparticles detection. We show that the proposed approach is able to detect DNA alterations, based on a selective nanoparticle reception process.

关键词： Nanoparticles Nanonetworks LSPR DNA Alterations BRCA1