Search results for " equipment."

showing 10 items of 314 documents

Rateless Codes Performance Analysis in Correlated Channel Model for GEO Free Space Optics Downlinks

2012

Settore ING-INF/03 - TelecomunicazioniFree Space Optics (FSO) technologies for satellite communications offer several advantages: wide bandwidth high rate capability immunity to electromagnetic interference and small equipment size. Thus they are suitable for inter-satellite links deep space communications and also for high data rate ground-to-satellite/satellite-to-ground communications. Nevertheless FSO links suffer impairments that cause power signal degradation at the receiver. Scattering and absorption cause power signal attenuations predictable by suitable deterministic models. Optical turbulence causes random irradiance fluctuations which can generate signal fading events and can thereby only be predicted by statistical models. Attenuation and fading events can corrupt FSO links and so it would be recommended to add mitigation error codes on the communication link. FSO channel can be described as an erasure channel: fading events can cause erasure errors. We have identified in rateless codes (RCs) a suitable solution to be employed in FSO links. RCs do not need feedback and they add a redundant coding on the source data that allows the receiver to recover the whole payload despite erasure errors. We implemented two different of rateless codes: Luby Transform (LT) and Raptor. We analyzed their performances on a simulated turbulent GEO FSO downlink (1 Gbps - OOK modulation) at a 106 μm wavelength and for different values of zenith angles. Assuming a plane-wave propagation and employing Hufnagel-Valley we modeled the downlink using: 1) a temporal correlated channel model based on Gamma-Gamma probability distribution and 2) an irradiance covariance function that we converted on a time function using Taylor frozen eddies hypothesis. Our new channel model is able to simulate irradiance fluctuations at different turbulence conditions as it will be shown in the full paper. We will also report performance results of LT and Raptor codes at overhead range varying between 0 and 50% and for different values of source packets.Settore ING-INF/01 - Elettronica
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I Tesori delle Chiese di Gratteri

2005

Si analizzano le suppellettili liturgiche e i parati sacri ancora custoditi nelle chiese di Gratteri mettendoli a confronto con la produzione siciliana coeva The liturgical furnishings and sacred equipments still preserved in the churches of Gratteri are analyzed, comparing them with the coeval Sicilian production

Settore L-ART/04 - Museologia E Critica Artistica E Del RestauroSicily Gratteri liturgical furnishing sacred equipmentsSicilia Gratteri suppellettili liturgiche parati sacriSettore L-ART/02 - Storia Dell'Arte Moderna
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Tonometers and infectious risk: myth or reality? Efficacy of different disinfection regimens on tonometer tips

2006

Purpose To evaluate the adequacy of common disinfection regimens for disposable tonometer tips and assess if disinfection of reusable prisms or the use of disposable tips is preferable. Methods We used disposable tonometer tips, using the same material and tip diameter of standard Goldmann tonometer prism. Strains of Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis and Candida albicans were tested according to the European standard guidelines for disinfectants test. Antimicrobial effectiveness of the following disinfection practices has been assessed: dry wipe, Minuten wipes (Alpros), soaking in 3% hydrogen peroxide, 0.5% benzalkonium chloride, and 0.5% Pantasepts for 1, 5, …

Settore MED/07 - Microbiologia E Microbiologia Clinicamedicine.medical_specialtydisinfection regimens on tonometer tips.Bacillaceae InfectionsSettore MED/42 - Igiene Generale E ApplicataCommunicable DiseasesRisk AssessmentTonometry OcularmedicineHumansPseudomonas InfectionsEfficacy of tonometers disinfectionOrganic ChemicalsDisposable EquipmentIntensive care medicineDisinfection methodsSettore MED/30 - Malattie Apparato VisivoOrganic chemicalsbusiness.industryCandidiasisHydrogen PeroxideStaphylococcal InfectionsSurgeryDisinfectionOphthalmologyCommunicable disease transmissionAnti-Infective Agents LocalInfectious riskBenzalkonium CompoundsTonometers and infectious riskBenzalkonium CompoundsbusinessBacillus subtilisDisinfectantsEye
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EmoTIC: Impact of a game-based social-emotional programme on adolescents

2021

[EN] Introduction Technologies provide a brilliant opportunity to promote social-emotional competences, well-being and adjustment in adolescence. Game-based programmes and serious games are digital tools that pursue an educational goal in an attractive environment for adolescents. The purpose of this study was therefore to determine the effectiveness of emoTIC, a game-based social-emotional programme designed according to Mayer, Caruso, and Salovey's model of emotional intelligence. Materials and methods The participants were 119 adolescents between 11 and 15 years, randomly assigned to the experimental group and the control group. The adolescents completed questionnaires to assess their em…

Social CognitionMaleApplied psychologyEmotionsIntelligenceSocial SciencesInnovación educacionalAnxietyAdolescentsFamiliesLearning and MemorySurveys and QuestionnairesSocial emotional learningMedicine and Health SciencesPsychologyChildChildrenEmotional IntelligenceMultidisciplinary05 social sciencesQR050301 educationMétodo de aprendizajeMedicineEngineering and TechnologyGame basedFemalePsychology050104 developmental & child psychologyResearch ArticleSocial PsychologyAdolescentScienceMEDLINEPsychological StressEquipmentHuman LearningMental Health and PsychiatryLearningHumans0501 psychology and cognitive sciencesCommunication EquipmentBehaviorEnseñanza secundariaCognitive PsychologyBiology and Life SciencesSelf ConceptProsocial BehaviorGames ExperimentalVideo GamesAge GroupsPeople and PlacesCognitive SciencePopulation GroupingsCell Phones0503 educationLENGUAJES Y SISTEMAS INFORMATICOSNeurosciencePLoS ONE
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Novel approach to study the perception of animacy in dogs.

2017

Humans tend to perceive inanimate objects as animate based on simple motion cues. So far this perceptual bias has been studied mostly in humans by utilizing two-dimensional video and interactive displays. Considering its importance for survival, the perception of animacy is probably also widespread among animals, however two-dimensional displays are not necessarily the best approach to study the phenomenon in non-human species. Here we applied a novel method to study whether dogs recognize a dependent (chasing-like) movement pattern performed by inanimate agents in live demonstration. We found that dogs showed more interest toward the agents that demonstrated the chasing-like motion, compar…

Social CognitionVisionlcsh:MedicineSocial SciencesInteractive displaysMotion (physics)0302 clinical medicinePsychologySense of Agencylcsh:Sciencemedia_commonMammalsMultidisciplinaryBehavior AnimalAnimal BehaviorPhysics05 social sciencesClassical MechanicsCamerasMotion cuesMovement patternOptical EquipmentVertebratesPhysical SciencesEngineering and TechnologySensory PerceptionAnimacyPsychologyCognitive psychologyResearch ArticleSocial Psychologymedia_common.quotation_subjectEquipment050105 experimental psychology03 medical and health sciencesMotionDogsPerceptionAnimals0501 psychology and cognitive sciencesAnimal behaviorBehaviorlcsh:ROrganismsCognitive PsychologyBiology and Life SciencesAmniotesCognitive Sciencelcsh:QPerceptionZoology030217 neurology & neurosurgeryNeurosciencePloS one
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Itch in the era of COVID‐19 pandemic: An unfolding scenario

2020

Abstract Coronavirus disease 2019 (COVID‐19) is an infectious disease, caused by severe acute respiratory syndrome (SARS)‐CoV‐2, that broke out in December 2019. In just 4 months it has spread to almost every country in the world and up to April 18, 2020, the virus has infected more than two million people. Itch is the most common symptom in dermatology and a frequent one of systemic diseases. The association of itch and viral diseases has been widely documented; however, the actual prevalence of itch in the patients suffering from new the SARS‐CoV‐2 infection is still unknown. In this paper, we present a review of the available literature on the topic of itch in the affected population. Mo…

Special Issue Articlesmedicine.medical_specialtyCoronavirus disease 2019 (COVID-19)Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)PopulationDermatologyViral infectionVirus030207 dermatology & venereal diseases03 medical and health sciences0302 clinical medicineCOVID‐19PandemicHumansMedicineskin and connective tissue diseaseseducationPersonal Protective Equipmenteducation.field_of_studySARS-CoV-2business.industryPruritusCOVID-19Special Issue ArticleGeneral MedicineDermatologyInfectious disease (medical specialty)030220 oncology & carcinogenesisPsychosocial stressbusinessStress PsychologicalDermatologic Therapy
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Effect of a common exercise programme with an individualised progression criterion based on the measurement of neuromuscular capacity versus current …

2021

IntroductionHigh-load resistance training has shown positive effects in pain and function in lower limb tendinopathies. However, some authors suggest that current exercise programmes produce an increase in tolerance to load and exercise in general but without fixing some existing issues in tendinopathy. This may indicate the need to include training aspects not currently taken into account in the current programmes. The main objective of this study will be to compare the effect of a common exercise protocol for the three predominant lower limb tendinopathies (Achilles, patellar and gluteal), based on an individualised control of the dose and training of specific aspects of the neuromuscular…

Sports medicinehipFerides i lesions Tractamentknee:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Quality of lifeInformed consent:Anatomy::Body Regions::Extremities::Lower Extremity [Medical Subject Headings]:Anatomy::Musculoskeletal System::Tendons::Achilles Tendon [Medical Subject Headings]:Analytical Diagnostic and Therapeutic Techniques and Equipment::Therapeutics::Rehabilitation::Exercise Therapy [Medical Subject Headings]1506Randomized Controlled Trials as Topic:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Evaluation Studies as Topic::Clinical Trials as Topic::Controlled Clinical Trials as Topic::Randomized Controlled Trials as Topic [Medical Subject Headings]foot & ankleMedicina física y rehabilitaciónRrehabilitation medicineGeneral MedicineExercise TherapyTreatment OutcomeLower Extremity:Anthropology Education Sociology and Social Phenomena::Social Sciences::Quality of Life [Medical Subject Headings]MedicineRodillamedicine.medical_specialtyBest practiceCaderaRehabilitation MedicineIntervention (counseling)medicineHumans1727:Analytical Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Prognosis::Treatment Outcome [Medical Subject Headings]Protocol (science)sports medicineFootbusiness.industryPieMedicina deportivamedicine.diseaseClinical trialTendinopathy:Diseases::Musculoskeletal Diseases::Muscular Diseases::Tendinopathy [Medical Subject Headings]Physical therapyQuality of LifeTobilloAnkleTendinopathyTendinitisbusiness
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Magnetic domain-wall racetrack memory for high density and fast data storage

2012

The racetrack memory device is a new concept of Magnetic RAM (MRAM) based on controlling domain wall (DW) motion in ferromagnetic nanowires. It promises ultra-high storage density thanks to the possibility to store multiple narrow DWS per memory cell. By using read and write heads based on magnetic tunnel junctions (MTJ) with perpendicular magnetic anisotropy (PMA) fast data access speed can also be achieved. Thereby the racetrack memory can be used as universal storage to address both embedded and standalone applications. In this paper, we present the device physics, integration circuit and architecture designs of a racetrack memory based on MTJs with PMA. Mixed SPICE simulations at 65 nm …

Standalone applicationsMagnetic domainComputer scienceSpiceArchitecture designsMRAM devicesMemory cellElectronic engineeringRacetrack memoryPerpendicular magnetic anisotropyMagnetic domainsMagnetoresistive random-access memoryHardware_MEMORYSTRUCTURESIntegration circuitsNanowiresbusiness.industryMagnetic devicesElectrical engineeringNon-volatile memory technologyDomain wall motionTunnel magnetoresistanceData storage equipmentComputer data storageFerromagnetic nanowireNode (circuits)Magnetic tunnel junctionbusinessRandom access storage
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Social Cognition and Socioecological Predictors of Home-Based Physical Activity Intentions, Planning, and Habits during the COVID-19 Pandemic

2020

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Strength trainingexercise equipmentmedia_common.quotation_subjectApplied psychologyControl (management)lcsh:BF1-990physical activityfyysinen ympäristöDevelopmentliikuntaCardiovascularBasic Behavioral and Social ScienceArticleStructural equation modelingpandemiat03 medical and health sciencesBehavioral Neuroscience0302 clinical medicineSocial cognitionPandemicBehavioral and Social ScienceGeneticsPsychology030212 general & internal medicineliikuntavälineetGeneral PsychologyEcology Evolution Behavior and Systematicshabitmedia_commonShelter in placePreventionpandemictottumuksetkotisosiaalinen kognitioCOVID-19030229 sport scienceshomeGood Health and Well Beinglcsh:PsychologyExercise equipmentCognitive SciencesHabitPsychologyMind and Bodyenvironmentfyysinen aktiivisuusBehavioral Sciences
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Efficacy of removing Thermafil and GuttaCore from straight root canal systems using a novel non-surgical root canal re-treatment system : a micro-com…

2021

The present study aims to evaluate the effectiveness of an XP-endo non-surgical root canal re-treatment system in removing both GuttaCore and Thermafil gutta-percha carrier-based root canal filling materials from straight root canal systems using micro-computed tomography (micro-CT) analysis. The study was performed on 20 single-rooted upper teeth, which were randomly allocated into the following study groups: Group A, Thermafil and AH Plus sealer (n = 10)

Study groupsmedicine.medical_specialtynon-surgical root canal re-treatmentEndodontics.Root canalEndodoncia.ThermafilDentistrylcsh:MedicineArticleDientes - Cavidades - Preparación.03 medical and health sciencesTeeth - Roots - Planing.0302 clinical medicinemedicineTeeth - Tomography.030212 general & internal medicinemicro-computed tomographyroot canal filling materialDental therapeutics - Equipment and supplies.Upper teethTerapéutica dental - Aparatos y material.Treatment systembusiness.industryMicro computed tomographylcsh:R030206 dentistryGeneral MedicineRoot Canal Filling MaterialsEndodonticsendodonticsmedicine.anatomical_structureDientes - Tomografía.GuttaCorebusiness
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