Search results for "character"

showing 10 items of 2956 documents

CHARACTERIZATION OF HYDROPHOBIC POLYMERIC MEMBRANES FOR MEMBRANE DISTILLATION PROCESS

2010

Hydrophobic microporous membranes are utilized in membrane distillation (MD) processes, e.g. seawater desalination at moderate temperatures. The vapour permeability of commercial hydrophobic membranes with different pore sizes (0.2-1 micron) was characterized through a simple apparatus designed-on-purpose. A cylindrical vessel had a face closed by the membrane and the other connected to a thin graduate tube. The water level variation in the tube is recorded and related to the vapour flux across the membrane. Measurements were taken in the temperature range 20-80°C. A fan tangential to membrane surface was employed to maintain a constant driving force for vapour transport. Vapour flux did no…

Settore ING-IND/24 - Principi Di Ingegneria ChimicaSettore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciChemistrySeawater desalinationSynthetic membraneMembrane distillation hydrophobic membranesMembrane distillationCharacterization (materials science)MembraneSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiChemical engineeringMicroporous membranesScientific methodOrganic chemistryGeneral Materials SciencePolymeric membrane
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Electromembrane Processes: Experiments and Modelling

2021

This Special Issue of Membranes journal focuses on electromembrane processes and is motivated by the increasing interest of the scientific community towards their characterization by experiments and modelling for several applications [...]

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciComputer sciencereverse electrodialysisProcess Chemistry and Technologylcsh:TP155-156Filtration and Separationmonovalent selective membranesimulationlcsh:Chemical technologyCharacterization (materials science)acid-base flow batteryMembraneEditorialElectromembrane processn/aChemical Engineering (miscellaneous)lcsh:TP1-1185Biochemical engineeringelectrodialysislcsh:Chemical engineeringCFDelectrochemical intercalation–deintercalationMembranes
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AN INITIAL STUDY INTO THE ENERGETIC CHARACTERISTICS OF SEVERAL VEGETATIVE SPECIES OF THE MEDITERRANEAN MAQUIS

2008

Recent years have seen an ever increasing interest in renewable energy resources. The use of these renewable resources plays a key role in the reduction of greenhouse gases and in guaranteeing a supply of energy for the future. A promising alternative to fossil fuels are lignocellulosic biomass feedstocks; a widely available, versatile source of energy able to substitute fossil fuels in many ways. The continuing growth of the Biomass sector is leading to a flurry of research into new plant species with good calorific properties and combustion persistence. It would seem that a large number of native Mediterranean maquis shrubs, once used by the local populations for heating and cooking, (car…

Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi ChimiciSettore ING-IND/25 - Impianti ChimiciMEDITERRANEAN MAQUIS ENERGETIC CHARACTERISTICSSettore AGR/02 - Agronomia E Coltivazioni ErbaceeSettore CHIM/02 - Chimica Fisica
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Design and control of an innovative electronic load for the photovoltaic module characterization

2016

The paper proposes a new electronic load setup for a fast, low-cost and standard-compliant characterization of a photovoltaic module. The approach is based on the use of a DC-DC converter, exploiting its ability to emulate a resistor. In particular, a Buck-Boost converter topology is employed. The model is implemented in the Simulink/SimPower System environment. A commercial PV Conergy E215P photovoltaic module is used in order to evaluate the performances of the proposed electronic load and to validate the proposed approach.

Settore ING-IND/31 - ElettrotecnicaPV moduleDC–DC converterDC-DC converterlcsh:Electrical engineering. Electronics. Nuclear engineeringSettore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricielectronic loadSettore ING-INF/07 - Misure Elettriche E Elettronichelcsh:TK1-9971PV characterization
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Electrical characterization of low power CIGSSe photovoltaic modules

2015

This paper presents the electrical characterization of low power CIGSSe photovoltaic (PV) modules. Such investigation is achieved to perform a comparison of their performances with conventional silicon PV modules. For this purpose, a test bench, suitable for the characterization of both traditional and innovative low power modules, has been set-up and experimental results are accurately described and discussed.

Settore ING-IND/31 - ElettrotecnicaTest benchSettore ING-IND/11 - Fisica Tecnica AmbientaleReliability (semiconductor)Computer sciencePower modulePhotovoltaic systemElectronic engineeringCIGSSe modules PV devices characterizationSettore ING-IND/32 - Convertitori Macchine E Azionamenti ElettriciSettore ING-INF/01 - ElettronicaCharacterization (materials science)Power (physics)2015 International Conference on Renewable Energy Research and Applications (ICRERA)
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A novel approach for parameters determination in four lumped PV parametric model with operative range evaluations

2013

The paper presents a novel numerical approach for the parameters determination of crystalline silicon PV models four lumped parameters equivalent circuit. The novel approach basically deals with a new method, alternative to the iterative one known in literature, to calculate the series resistance. Particularly, it allows the evaluation of the lumped parameters on the basis of the manufacturer’s datasheet. The new approach has been validated both in the Maximum Power Point (MPP) and close to it by comparing values and curves obtained by means of the model implementation in Matlab/Simulink environment with those related to some five parameters models and manufacturer curves. Results show that…

Settore ING-IND/32 - Convertitori Macchine E Azionamenti Elettricifive lumped parameters model four lumped parameters model I-V characteristic curves Maximum Power Point silicon photovoltaic modules
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An Adaptive Bayesian System for Context-Aware Data Fusion in Smart Environments

2017

The adoption of multi-sensor data fusion techniques is essential to effectively merge and analyze heterogeneous data collected by multiple sensors, pervasively deployed in a smart environment. Existing literature leverages contextual information in the fusion process, to increase the accuracy of inference and hence decision making in a dynamically changing environment. In this paper, we propose a context-aware, self-optimizing, adaptive system for sensor data fusion, based on a three-tier architecture. Heterogeneous data collected by sensors at the lowest tier are combined by a dynamic Bayesian network at the intermediate tier, which also integrates contextual information to refine the infe…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniAmbient intelligenceComputer Networks and CommunicationsComputer scienceIntelligent decision support systemInferenceBayesian network020206 networking & telecommunications02 engineering and technologyEnergy consumptionSensor fusioncomputer.software_genreActivity recognitionEnergy conservationContext Data integration Intelligent sensors Sensor phenomena and characterization Bayes methods Energy consumptionIntelligent sensor0202 electrical engineering electronic engineering information engineering020201 artificial intelligence & image processingSmart environmentData miningElectrical and Electronic EngineeringWireless sensor networkcomputerSoftwareDynamic Bayesian networkIEEE Transactions on Mobile Computing
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On a Roadmap to Biologically Inspired Cognitive Agents

2011

A new challenge is proposed for future intelligent artifacts based on biologically inspired cognitive architectures (BICA), called the BICA Challenge. Namely, it is proposed that a BICA agent can only be considered human-level intelligent if it can be accepted and trusted as an equal member (a “person”) by a human community. For example, an agent of this sort would be able to win a political election against human candidates.

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniBICA Challenge human-level human-like cognitive architectures synthetic characters virtual persons intelligent agents
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An Embedded Module for Iris Micro-Characteristics Extraction

2009

In this paper a new approach, based on iris micro-characteristics, has been used to make possible an embedded biometric extractor. This recognition approach is based on ophthalmologic studies that have proven the existence of different micro-characteristics as well as fingerprint minutiae. These micro-characteristics are permanent and immutable and they can be used to create strong and robust identification systems.Biometric recognition systems are critical components of our everyday lives. Since such electronic products evolve to software intensive systems, where software, becoming larger, more complex and prevalent, introduces many problems in the development phases. The development of em…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniBiometricsbusiness.industryComputer scienceembedded software intensive systems iris micro-characteristics embedded module FPGA technologies biometric system.Feature extractionFingerprint recognitionIdentification (information)SoftwareEmbedded systemIRIS (biosensor)Field-programmable gate arraybusinessReactive systemComputer hardware
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Collective Reasoning over Shared Concepts for the Linguistic Atlas of Sicily

2013

In this chapter, collective intelligence principles are applied in the context of the Linguistic Atlas of Sicily (ALS - Atlante Linguistico Siciliano), an interdisciplinary research focusing on the study of the Italian language as it is spoken in Sicily, and its correlation with the Sicilian dialect and other regional varieties spoken in Sicily. The project has been developed over the past two decades and includes a complex information system supporting linguistic research; recently it has grown to allow research scientists to cooperate in an integrated environment to produce significant scientific advances in the field of ethnologic and sociolinguistic research. An interoperable infrastruc…

Settore ING-INF/05 - Sistemi Di Elaborazione Delle InformazioniMarkup languagebusiness.industryData managementInteroperabilityCollective intelligenceContext (language use)computer.software_genreLinguisticsGeographyCommon knowledgeALSethnologic research sociolinguistic research Linguistic Atlas of Sicily collective reasoningshared concepts Data integration Social interaction Search engineEmergent knowledge Sociolinguistic Spoken Transcription Linguistic annotation Linguistic Phenomena Collective intelligence Information retrieval Audio analysis Wavesurfer Collective Knowledge System information exchange Knowledge Discovery in Database Linguistic framework Interviews Biographic information Meta-linguistic information Social characterization Statistic InformationDiatopiaFilologicheiBatis framework spectrogram analysisMarkup language Geographic information system Pronunciation Linguistic tools Data management SAX builder Results dissemination Geo-localized informationdata exploration geographically referenced visualizationbusinesscomputerInformation exchangeData integration
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