Search results for "LEVEL"

showing 10 items of 3465 documents

RF Acquisition System Based on μTCA for Testing of High-Gradient Acceleration Cavities

2022

The radio frequency (RF) laboratory hosted in the Corpuscular Physics Institute (IFIC) of the University of Valencia is designed to house a high-power and high-repetition-rate facility to test normal conduction RF accelerator cavities in the S-Band (2.9985 GHz) in order to perform R&D activities related to particle accelerator cavities. The system, which manages the entire process of RF signal generation, data acquisition and closed-loop control of the laboratory, is currently based on a modular and compact PXI platform system. This contribution details the development of a platform with similar features, but which is based on open architecture standards at both the hardware and softwar…

TelecomunicacióComputer Networks and CommunicationsHardware and ArchitectureControl and Systems EngineeringAcceleradors de partículesSignal ProcessingSistemes d'identificació per radiofreqüènciaradio frequency; accelerator cavities; μTCA systems; Low Level RF systemElectrical and Electronic Engineering
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Estudio de las fluctuaciones del nivel del agua en la laguna de Gallocanta (Aragón, España) mediante imágenes satelitales de Sentinel-2

2021

[EN] This study has been monitored for five years by Sentinel-2 satellite images, at different seasons of the year, of the fluctuations in the water level of the Gallocanta Lake (between the provinces of Teruel and Zaragoza, Spain) considered a hypersaline and endorheic wetland, which has characteristics that make it unique in the geographical area in which it is located, as well as for the operation of the system. Rainfall in the area has a wide variation giving the maximums in the moths of May and June and the minimums in January and February, with considerable fluctuations in the water level from the almost total drying of the lagoon to the filling with a depth of approximately 3 meters.

Teledetecció010504 meteorology & atmospheric sciencesGeography Planning and Development0211 other engineering and technologiesWetland02 engineering and technologysalino01 natural scienceshumedalFluctuacionesfluctuacionesTeledetecciónEarth and Planetary Sciences (miscellaneous)teledetecciónFluctuationsEndorreico021101 geological & geomatics engineering0105 earth and related environmental sciencesHydrologygeographyGeography (General)geography.geographical_feature_categoryHumedalSalineendorreicoRemote sensingWater levelSalinoWetlandEnvironmental scienceG1-922EndorheicRevista de Teledetección
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What Do Secondary Students Really Learn during Investigations with Living Animals? Parameters for Effective Learning with Social Insects

2016

ABSTRACTExemplary for social insects, Temnothorax ants allow for various hands-on investigations in biology classes. The aim of this study was to provide a quantitative and qualitative analysis of secondary school students’ learning achievement after teaching units with ants lasting between one and six weeks. The questionnaires included transfer and factual knowledge tasks divided into eight fields of knowledge. Students (N  =  459) from 22 classes participated in the study and received different treatments: The experimental group (n  =  366) started their investigations by initial observation using stereo microscopes, while the control group (n  =  93) conducted ant research without this i…

TemnothoraxbiologyKnowledge levelEcology (disciplines)05 social sciences050301 educationLearning achievementFactual knowledgePositive correlationbiology.organism_classificationKnowledge acquisitionEducationQualitative analysisMathematics education0501 psychology and cognitive sciences050102 behavioral science & comparative psychologyGeneral Agricultural and Biological Sciences0503 educationJournal of Biological Education
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Real time monitoring of water level and temperature in storage fuel pools through optical fibre sensors

2017

AbstractWe present an innovative architecture of a Rayleigh-based optical fibre sensor for the monitoring of water level and temperature inside storage nuclear fuel pools. This sensor, able to withstand the harsh constraints encountered under accidental conditions such as those pointed-out during the Fukushima-Daiichi event (temperature up to 100 °C and radiation dose level up to ~20 kGy), exploits the Optical Frequency Domain Reflectometry technique to remotely monitor a radiation resistant silica-based optical fibre i.e. its sensing probe. We validate the efficiency and the robustness of water level measurements, which are extrapolated from the temperature profile along the fibre length, …

Test benchOptical fiberOptical fiberScienceNuclear power plants01 natural sciencesArticleAutomotive engineeringlaw.invention010309 opticssymbols.namesakelawRobustness (computer science)0103 physical sciencesElectroniqueRayleigh scatteringReflectometrySimulationRadiationMultidisciplinaryNuclear fuel010308 nuclear & particles physicsbusiness.industryQSettore FIS/01 - Fisica SperimentaleRDISTRIBUTED SENSORSOPTICAL FIBERNuclear powerWater levelRAYLEIGH SCATTERINGWater levelFREQUENCY-DOMAIN REFLECTOMETRYsymbolsMedicineEnvironmental sciencebusiness
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Comparison of GTR, T-PRF and open-flap debridement in the treatment of intrabony defects with endo-perio lesions : a randomized controlled trial

2019

Background Titanium- prepared platelet rich fibrin (T-PRF) is an autologous hemo-component with a high concentration of platelets that also incorporates leukocytes, and growth factors into the dense fibrin matrix and can be used as a healing biomaterial. This study assesses the adjunctive use of T-PRF in intrabony defects (IBDs) with open flap debridement (OFD) in comparison with guided tissue regeneration (GTR) as a gold standard and OFD alone as a control. Material and Methods A total of 45 patients (15 per group) were randomized as either T-PRF (test group), GTR (test group), or OFD alone (control group) sites. Probing depth (PD), clinical attachment level (CAL), and IBD were recorded. T…

Test groupmedicine.medical_treatmentAlveolar Bone LossFibrin matrixDentistrylaw.invention03 medical and health sciences0302 clinical medicineRandomized controlled triallawPlatelet-Rich FibrinmedicineHumansPeriodontologyPeriodontitisFlap SurgeryGeneral DentistryTitaniumGuided Tissue Regenerationbusiness.industryResearchSignificant differenceOpen flap debridementIntrabony DefectsAttachment level030206 dentistry:CIENCIAS MÉDICAS [UNESCO]Platelet-rich fibrindigestive system diseasesRoot Canal TherapyTreatment OutcomeDebridementOtorhinolaryngologyDebridement (dental)UNESCO::CIENCIAS MÉDICASGuided Tissue Regeneration PeriodontalSurgerybusiness
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Non-Linear Hysteretic Instability in Rotating Machinery

2013

The destabilizing influence of the shaft hysteresis on the supercritical whirl of rotating machines can be efficiently counterbalanced by proper external dissipative sources in the supports and/or anisotropic suspension systems. The hysteretic effect may be treated either by dry or viscous models obtaining different but somehow similar results in the hypothesis of small dissipation levels. Thus the linear viscous assumption is often accepted as a crude approximation for a straightforward analysis of the whirling instability. Nevertheless the internal friction should be regarded most likely as non-linear and could be approximated for example by Coulombian models taking thus into account also the releasing effect of some shrink-fit coupling present in the mechanical assembly.
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Tutela e sicurezza del lavoro tra centro e periferia: la sicurezza sui luoghi di lavoro

2013

Il saggio prende in esame la complessa questione del riparto di competenze tra Stato e Regioni alla luce del Titolo V della Costituzione in materia di salute e sicurezza sui luoghi di lavoro. Il riparto di competenze tra centro e periferia è stato oggetto di una limitata analisi da parte della dottrina e della giurisprudenza, che si sono concentrate in particolare sulla disciplina del mercato del lavoro. L’Autore descrive un sistema multilivello, caratterizzato dalla compresenza di fonti nazionali e regionali, della contrattazione collettiva, nonché di codici di condotta. Sulla scorta di una ricostruzione del quadro normativo e dei percorsi della giurisprudenza, il saggio propone una lettur…

The essay examines the complex issue of the division of powers between the State and the Regions according to Title V of the Constitution concerning health and safety at workplace. This division between the center and the periphery has been subject to a limited review by doctrine and jurisprudence expecially focusing on the regulation of labour market. The Author describes a multilevel system characterized by the presence of national and regional sources collective bargaining and codes of conduct. On the basis of a reconstruction of the regulatory framework and the judicial statements the paper proposes a dynamic reading of the relationship between center and periphery in which the axis of the system remains however anchored to the national jurisdiction along with important regulatory issues left to the regional legislation.Settore IUS/07 - Diritto Del Lavoro
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L'intonaco Li Vigni nell'architettura del XX secolo a Palermo. Nuove conoscenze e applicazioni diagnostiche per la manutenzione

2013

Il saggio presenta lo studio degli intonaci formulati per imitare le pietre e i marmi naturali che si diffondono in Sicilia all’inizio del XX secolo ed evidenzia che le prime applicazioni e la diffusione delle nuove malte, anche nel resto dell’Italia, risentono delle sperimentazioni condotte in tutta l’Europa. Il contributo riassume i risultati di una rigorosa e capillare ricognizione tra i brevetti conservati presso l’Archivio Centrale dello Stato a Roma inerenti alle malte per il confezionamento dell’intonaco a “finta pietra”, ne analizza i contenuti in modo critico e pone in risalto i contatti culturali con le sperimentazioni dei materiali in atto nell’ambito dei grandi cantieri di resta…

The paper presents the study of the plaster formulated to imitate the natural stones and marbles that are popular in Sicily in the early twentieth century and points out that the first applications and the dissemination of new mortars also in the rest of Italy feels the influence of the experiments conducted throughout Europe . The contribution summarizes the results of a rigorous and thorough reconnaissance of patents kept in the Archivio Centrale dello Stato in Rome relating to mortars for plastering an artificial stone critically analyzes the content and emphasizes cultural contacts with the experiments on large-scale restoration projects in Italy and France in the late nineteenth century. The analysis of the architectural surfaces is developed with instrumental tests: the levels of adhesion of finishing surface are characterized in particular through a campaign of thermographic investigations and diagnosis is drawn to show that the consolidation of the layers and reintegration are interventions to be introduced ​​within the restoration project and maintenance program.Settore ICAR/19 - Restauro
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Student Partners in Task Design in a computer medium to promote Foundation students' learning of mathematics

2018

International audience; A team consisting of three mathematics education teacher-researchers, four former Foundation students (called Student Partners, SPs), and two analytic assistants worked together to produce mathematical tasks in a computer medium for the mathematical learning of current Foundation students (FSs). We have explored the collaboration between the SPs and researchers, the processes and outcomes of task design, and the contribution of the collaboration to tutorial teaching of FSs. We seek insight into the learning of all concerned of mathematics, mathematics teaching, task design and personal-professional development. The project is ongoing. Here we introduce the project an…

The role of digital and other resources in university mathematics educationTeachers' and students' practices at university level[SHS.EDU]Humanities and Social Sciences/Education[MATH.MATH-HO]Mathematics [math]/History and Overview [math.HO][SHS.EDU] Humanities and Social Sciences/Education[MATH.MATH-HO] Mathematics [math]/History and Overview [math.HO]ComputingMilieux_COMPUTERSANDEDUCATIONNovel approaches to teachingStudents as partners in task design.
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Representation theory treatment of measurement semantics for ratio, ordinal and nominal scales

1997

Within the scope of the representational theory a formal framework for description of semantic aspects of measurement on different scales is proposed. This is done by means of a first-order formal logical system consisting of a set of empirical predicates which play the part of a data structure in the framework, a set of operations by means of which syntactically correct statements can be formed; a set of axioms being true statements and a set of numerical statements which is an aggregation of potential measurement results carrying a meaningful load. On this basis the notation of semantic information on various scales is introduced and some common claims about the measurement semantic infor…

Theoretical computer scienceRelation (database)Semantics (computer science)business.industryApplied MathematicsCondensed Matter PhysicsNotationData structureSet (abstract data type)Level of measurementInformation systemArtificial intelligenceElectrical and Electronic EngineeringbusinessInstrumentationAxiomMathematicsMeasurement
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