Search results for "Functions"

showing 10 items of 1066 documents

Design and implementation of modelling tasks using iPad's: a dual perspective

2016

[EN] This paper presents the design of two experiences to introduce modelling of physical phe-nomena through modelling tasks using iPadR's. Each of the proposals is designed with adi erent vision about modelling. In one case modelling is used as a vehicle to introduceprecise mathematical contents. While, on the other one, we intend to develop an activitythat can help student to improve their modelling competence. Our aim is to present twoproposals to introduce modelling in a ninth or tenth grade classroom

Tecnologia educativaEducación secundariaFunciones05 social sciences050301 educationModels matemàticsSolució de problemes01 natural sciencesModelizaciónMatemàtica Ensenyamentlcsh:Education (General)ModellingPhysical phenomenaExperiencias de aulaiPadClassroom experiences0103 physical sciencesFunctionslcsh:L7-991010306 general physicsSecondary school0503 educationFenómenos físicosTablets
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Modulation of higher-order olfaction components on executive functions in humans

2015

The prefrontal (PFC) and orbitofrontal cortex (OFC) appear to be associated with both executive functions and olfaction. However, there is little data relating olfactory processing and executive functions in humans. The present study aimed at exploring the role of olfaction on executive functioning, making a distinction between primary and more cognitive aspects of olfaction. Three executive tasks of similar difficulty were used. One was used to assess hot executive functions (Iowa Gambling Task-IGT), and two as a measure of cold executive functioning (Stroop Colour and Word Test-SCWT and Wisconsin Card Sorting Test-WCST). Sixty two healthy participants were included: 31 with normosmia and …

Test de StroopOlfactelcsh:Medicine:Psychiatry and Psychology::Psychological Phenomena and Processes::Mental Processes::Thinking::Decision Making [Medical Subject Headings]:Psychiatry and Psychology::Psychological Phenomena and Processes::Psychophysiology::Sensation::Smell [Medical Subject Headings]AudiologyPrefrontal cortex:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Executive FunctionOlfaction Disorderspiriform cortexHyposmiaOlfactory threshold:Psychiatry and Psychology::Behavioral Disciplines and Activities::Psychological Tests::Neuropsychological Tests::Stroop Test [Medical Subject Headings]older-adultsalzheimers-diseaselcsh:SciencePsychiatryMultidisciplinaryCognitive flexibilityCognitionMiddle AgedExecutive functionsSmellCognitive inhibitionNeurology:Diseases::Nervous System Diseases::Neurologic Manifestations::Sensation Disorders::Olfaction Disorders [Medical Subject Headings]FemaleFrontal lobemedicine.symptomPsychologyperformanceResearch ArticleAdultmedicine.medical_specialtyAdolescentOlfactionventromedial prefrontal cortexYoung AdultNeurologiamild cognitive impairmentLòbul frontalPruebas neuropsicológicasmedicineHumansTrastornos del olfatoPsiquiatriaToma de decisionesCognición:Psychiatry and Psychology::Psychological Phenomena and Processes::Mental Processes::Cognition [Medical Subject Headings]lcsh:Rdecision-makingOlfactory Perceptionodor identificationdeficits:Psychiatry and Psychology::Behavioral Disciplines and Activities::Psychological Tests::Neuropsychological Tests [Medical Subject Headings]:Psychiatry and Psychology::Psychological Phenomena and Processes::Mental Processes::Executive Function [Medical Subject Headings]lcsh:QOlfatoStroop effectdiscrimination
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Abitare nel reale. Dalla crisi della periferia alla tessitura di nuove relazioni contestuali

2019

I progetti redatti per “Palermo Sud-Est” sono il risultato di un Laboratorio di Laurea strutturatosi attraverso incontri, seminari, comunicazioni specialistiche, esposizioni critiche, che – in una strategia condivisa – ha visto ogni studente elaborare il proprio lavoro nel confronto con gli altri attori del Laboratorio stesso. La ricerca sui “progetti urbani” è stata impostata di modo che ogni laureando fosse messo a conoscenza dei progetti svolti nello stesso ambito territoriale dai colleghi che l’avevano preceduto, così da poter operare in continuità e contribuire a formulare un ragionamento unitario, nel quale ogni progetto costituisse continuazione, verifica o anche variante dei precede…

The projects prepared for "Palermo South-East" are the result of a Graduate Laboratory structured through meetings seminars specialist communications critical exhibitions which - in a shared strategy - saw each student elaborate their work in comparison with others actors of the same Laboratory. The research on "urban projects" was set so that each graduating student was made aware of the projects carried out in the same geographical area by the colleagues who had preceded it so as to be able to operate in continuity and contribute to formulating a unitary reasoning in which each project constituted continuation verification or even variant of the previous ones. These coordinated works have pursued two fundamental objectives: the strengthening of infrastructures and the establishment of specialized public buildings with superior functions aimed at requalifying and regenerating various critical situations with particular attention to the relationship between context and life scenarios. Thus each designer while dealing with a main functional program simultaneously deals with various issues such as the rationalization of the road system the redevelopment of existing buildings the design and refunctionalization of urban services (for example the transformed Central Station in the hotel or the project of a great Mosque)several degree theses have addressed as the main theme or as a question in the background the design of a new bed for the Oreto river and the relative establishment of a park facing it. In this desire to "patch up the wounds" in the different areas of "Palermo South-East" in close relationship with the vicissitudes of the place there is a continuous reference to architectures of all time and some questions involving the functional program are suggested - that identifies the character (or perhaps "type") of what is to be inserted in a given context - and the qualities of living reality as a pivotal material in the design process.Settore ICAR/14 - Composizione Architettonica E Urbana
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Probabilistic versus deterministic memory limited learning

1995

Theoretical computer scienceComputer scienceDeterministic memoryTerm memoryProbabilistic logicRecursive functionsShort-term memoryString representation
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Electronic properties of graphene: A learning path for undergraduate students

2016

The purpose of this work is to present a learning path aimed at deepening student understanding of the fundamental concepts underlying the electronic properties of new materials, graphene in particular. To achieve this task, we propose a five-week long workshop where students may be introduced to fundamental concepts of advanced physics, rarely used in learning paths, such as the symmetry properties of the crystal lattice, the group theory , the features of the free electron wave functions and energy levels, the relativistic Dirac equation. Particular emphasis is given to the manner of introducing these concepts, since an essential knowledge of solid state physics, quantum physics and relat…

Theoretical computer scienceSolid-state physicsSettore FIS/08 - Didattica E Storia Della FisicaLattice theoryCrystal symmetryElectronSettore FIS/03 - Fisica Della MateriaTask (project management)EducationElectronic propertieRelativitysymbols.namesakeTheory of relativityMathematics educationLinear equationWave functionsPhysicsSequenceSymmetry (physics)Dirac equationQuantum theoryPath (graph theory)symbolsThe Conceptual FrameworkGroup theoryStudent
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Learning small programs with additional information

1997

This paper was inspired by [FBW 94]. An arbitrary upper bound on the size of some program for the target function suffices for the learning of some program for this function. In [FBW 94] it was discovered that if “learning” is understood as “identification in the limit,” then in some programming languages it is possible to learn a program of size not exceeding the bound, while in some other programming languages this is not possible.

Theoretical computer sciencebusiness.industryComputer sciencemedia_common.quotation_subjectInductive reasoningMachine learningcomputer.software_genreUpper and lower boundsIdentification (information)Recursive functionsArtificial intelligenceLimit (mathematics)businessFunction (engineering)computermedia_common
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Properties and constraints of cheating-immune secret sharing schemes

2006

AbstractA secret sharing scheme is a cryptographic protocol by means of which a dealer shares a secret among a set of participants in such a way that it can be subsequently reconstructed by certain qualified subsets. The setting we consider is the following: in a first phase, the dealer gives in a secure way a piece of information, called a share, to each participant. Then, participants belonging to a qualified subset send in a secure way their shares to a trusted party, referred to as a combiner, who computes the secret and sends it back to the participants.Cheating-immune secret sharing schemes are secret sharing schemes in the above setting where dishonest participants, during the recons…

TheoryofComputation_MISCELLANEOUSHomomorphic secret sharingCryptography0102 computer and information sciences02 engineering and technologyShared secretComputer securitycomputer.software_genre01 natural sciencesSecret sharingCheating0202 electrical engineering electronic engineering information engineeringDiscrete Mathematics and CombinatoricsSecret sharingMathematicsbusiness.industryApplied MathematicsCryptographic protocol16. Peace & justiceShamir's Secret Sharing010201 computation theory & mathematicsResilient functionsCryptographySecure multi-party computation020201 artificial intelligence & image processingVerifiable secret sharingbusinesscomputerDiscrete Applied Mathematics
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Phylogenetic analysis of the isopenicillin-N-synthetase horizontal gene transfer.

1996

A phylogenetic study of the isopenicillin-N-synthetase (IPNS) gene sequence from prokaryotic and lower eukaryotic producers of beta-lactam antibiotics by means of a maximum-likelihood approach has been carried out. After performing an extensive search, rather than invoking a global molecular clock, the results obtained are best explained by a model with three rates of evolution. Grouped in decreasing order, these correspond to A. nidulans and then to the rest of the eukaryotes and prokaryotes, respectively. The estimated branching date between prokaryotic and fungal IPNS sequences (852 +/- 106 MY) strongly supports the hypothesis that the IPNS gene was horizontally transferred from bacteria…

Time FactorsSequence alignmentGram-Positive BacteriaAspergillus nidulansFungal ProteinsTransformation GeneticBacterial ProteinsSpecies SpecificityPhylogeneticsAspergillus nidulansBotanyGram-Negative BacteriaGeneticsMolecular clockMolecular BiologyGeneEcology Evolution Behavior and SystematicsPhylogenyGeneticsFungal proteinLikelihood FunctionsbiologyPhylogenetic treeModels GeneticRNA Ribosomal 5SRNA Fungalbiology.organism_classificationRNA BacterialHorizontal gene transferOxidoreductasesSequence AlignmentJournal of molecular evolution
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Improved Switching Strategy for Selective Harmonic Elimination in DC-AC Signal Generation via Pulse-Width Modulation

2013

Published version of an article in the journal: Abstract and Applied Analysis. Also available from the publisher at: http://dx.doi.org/10.1155/2013/870904 Open Access We present an advanced design methodology for pulse-width-modulated (PWM) DC-AC signal generation. Using design methods based on the Walsh transform, AC sinusoidal signals can be approximated by suitable PWM signals. For different AC amplitudes, the switching instants of the PWM signals can be efficiently computed by using appropriate systems of explicit linear equations. However, the equation systems provided by conventional implementations of this approach are typically only valid for a restricted interval of AC amplitudes a…

Total harmonic distortionOptimization problemArticle Subjectlcsh:MathematicsApplied Mathematics:Enginyeria electrònica [Àrees temàtiques de la UPC]Anàlisi harmònicaInterval (mathematics)lcsh:QA1-939VDP::Mathematics and natural science: 400::Mathematics: 410::Analysis: 411SignalElectric current convertersHarmonic analysisAmplitudeHadamard transformControl theoryConvertidors de corrent elèctricWalsh Funcions deWalsh functionsAnalysisPulse-width modulationLinear equationMathematicsAbstract and Applied Analysis
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Représenter les dynamiques urbaines de Tours antique et médiéval

2012

ToToPI, for Topography of Tours Pre-Industrial, is a GIS for studying of the city of Tours (France) in large time span. The aim of this paper is to explain how GIS is used for historical data processing to understand time-space dynamics. The proposed principle for understanding the urban dynamic is based on considering the town as a set of complex objects, taking a systemic approach. The town system used to study the urban fabric over large time spans is composed of three sub-systems relating to historical objects from the level of the excavation to that of the former urban space: function (social use), space (location, surface area and morphology) and time (dating, duration and chronology)…

Town[SHS.ARCHEO] Humanities and Social Sciences/Archaeology and Prehistory[SHS.ARCHEO]Humanities and Social Sciences/Archaeology and PrehistorySpatial dynamics[SHS.GEO] Humanities and Social Sciences/Geographyfonctions urbaines[SHS.GEO]Humanities and Social Sciences/GeographyGISSIGtemporalité[ SHS.GEO ] Humanities and Social Sciences/Geographydynamiques spatiale[ SHS.ARCHEO ] Humanities and Social Sciences/Archaeology and Prehistoryspatio-temporal modelingUrban functionstemporalitymodélisation
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