Search results for "ATF"

showing 10 items of 565 documents

Design and analysis of discrete choice experiments for models with response time

2013

Settore SECS-S/02 - Statistica Per La Ricerca Sperimentale E TecnologicaA sector of conjoint analysis (experimental design in marketing research) is made of the so called choice experiments. In choice experiments respondents undergo a questionnaire which is nowadays mostly submitted through the internet. The questionnaire proposes to the respondent a sequence of choice sets each one including two or more profiles being a profile a specific combination of attribute levels. The respondent selects the preferred profile for each choice set. Responses given by a sample of respondents are analysed through suitable methods aimed to eventually find the best combination of attribute levels. One method of analysis adopts the Multinomial Logit (MLN) model. In this article the authors show the results of the MLN analysis compared with another model of analysis which uses an additional response which can be easily recorded by electronically submitted questionnaires. In practice modern survey platforms like “Qualtrics” (the one used for this work) can record the so called “response latency” i.e. the time taken by the respondent to make the choice and select the most preferred profile in the choice set. Thanks to a response latency model further refined in this work it is possible to deduce the relative weight of importance of the profiles for each choice set and respondent. This type of response can be used in place of the dichotomous choice variable in the MLN model. The two models and methods of analysis are deeply compared and it is critically discussed when it is better to use one or the other method. As a result a more reliable estimate of the optimal profile comes up implying lower risks for new investments and marketing decisions.
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Modulo sperimentale di registrazione delle procedure diagnostiche e terapeutiche in ambito odontostomatologico

2016

Riassunto Obiettivi Scopo del lavoro e presentare un repository (Italian Recording for the Appropriate Management of Odontoiatric Patient, IRAMOP) per la registrazione delle prestazioni odontoiatriche effettuate sui pazienti afferenti a cinque sedi universitarie italiane relativamente alle specialita ortodontiche, chirurgiche, implantologiche, parodontali ed endodontiche. Materiali e metodi Si descrivono i singoli percorsi clinici programmati indicando nel dettaglio procedure, strumenti e farmacoterapia associata. I vari operatori nelle proprie sedi, attenendosi alle recenti raccomandazioni cliniche in odontostomatologia pubblicate dal Ministero della Salute, avranno la possibilita di regis…

Shared platformOral surgeryFollow-upRepositoryOrthodontics030206 dentistry030204 cardiovascular system & hematology03 medical and health sciences0302 clinical medicineClinical responseOrthodonticNumeric Rating Scale (NRS)Oral Surgeryclinical response; follow-up; Numeric Rating Scale (NRS); repository; shared platformPsychologyHumanities
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The challenge for economics from the new 'digital' economy: sharing and collaborative economy through the 'platforms neocapitalism' of the 21st centu…

2021

The so-called collaborative or sharing economy constitutes a multifaceted concept of increasing relevance and evolving in definition that will constitute the focus of our study. This article is presented methodologically as a macro-synthesis of the main trends of the economy, from its local and global spheres, in the convergence that can be glimpsed from the new phenomenon that we are dealing with of neo-capitalism based essentially on digital platforms and media. Some have already advanced it as turbo-capitalism or capitalism 3.0, in increasing expansion from the analysis of massive data from digital platforms. The resulting greater efficiency of decentralization and heterogeneity can be e…

Sharing economysharing economy; digital platforms; collaborative economyBusinessDigital economyEconomic systemEconomia
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Sequence stratigraphy of a mesozoic carbonate platform-to-basin system in Western sicily

2009

Abstract Sequence stratigraphic studies of the Triassic through Paleogene carbonate successions of platform, slope and basin in western Sicily (Palermo and Termini Imerese Mountains) have identified a sedimentary cyclicity mostly caused by relative oscillations of sea level. The stratigraphic successions of the Imerese and Panormide palaeogeographic domains of the southern Tethyan continental margin were studied with physical-stratigraphy and facies analysis to reconstruct the sedimentary evolution of this platform-to-basin system. The Imerese Basin is characterized by a carbonate and siliceous-calcareous succession, 1200–1400m thick, Late Triassic to Eocene in age. The strata display a typ…

Shelf-to-basin system sedimentologyQE1-996.5tectono-eustatic cyclesSettore GEO/02 - Geologia Stratigrafica E SedimentologicaCarbonate platformTransgressive/regressive cyclesGeologyEnvironmental Science (miscellaneous)Paleontologychemistry.chemical_compoundchemistryContinental marginFaciesTectono-eustatic cycleGeneral Earth and Planetary SciencesCarbonateSedimentary rockSequence stratigraphyProgradationMesozoic western SicilyPaleogeneGeology
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An exceptional rocky shore preserved during Oligocene (Late Rupelian) transgression in the Upper Rhine Graben (Mainz Basin, Germany)

2012

The Early Oligocene (Late Rupelian) Alzey Formation (Mainz Basin, Upper Rhine Graben, Germany) records the development of a rocky coast depositional system during transgression. The formation unconformably overlies Permian bedrock across a composite transgressive ravinement surface. Exposure of the surface shows a succession of subplanar bedrock terraces, separated by near-vertical risers. Terraces show a broad staircase geometry and display wave-erosional features (notches, sea stacks, furrows). Detailed sedimentological and palaeoecological investigations reveal prograding beachface and shoreface depositional units that overlie terraces and are adjacent to risers. Terraces are interpreted…

Shore010506 paleontologygeographyTectonic subsidencegeography.geographical_feature_categoryBedrockGeology010502 geochemistry & geophysics01 natural sciencesWave-cut platformSedimentary depositional environmentGrabenPaleontologyTerrace (geology)14. Life underwaterGeology0105 earth and related environmental sciencesMarine transgressionGeological Journal
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Triasina hantkeni limestones from western Sicily

2010

Sicily Upper Triassic Facies Carbonate Platform
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Soluzioni tecnologiche e lotta al Covid-19: una riflessione critica

2023

Technological solutions and the fight against Covid-19. A critical reflection – Digital technologies have played a decisive role in the definition and implementation of measures to combat the Covid-19 pandemic, from the dissemination of information to the monitoring of behavior. Yet their use has not always achieved the desired effects. By reviewing the case of tracking apps, this contribution aims to take stock of the role of technologies and the private sector during the pandemic emergency and to reason about the causes of their failure.

Social networkPlatform economyPrivacyDigital technologieSettore IUS/01 - Diritto PrivatoSettore IUS/02 - Diritto Privato ComparatoCovid-19Settore IUS/21 - Diritto Pubblico Comparato
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Consolidated challenge to social demand for resilient platforms : Lessons from Uber's global expansion

2017

Many in the industry see the ride-sharing company Uber as the significant advancement through information and communication technology (ICT) particularly of the digital service platform and sharing economy. Uber has been exploring the new frontier of the ICT-driven disruptive business model (IDBM) and succeeded in its global expansion to over 479 cities in more than 75 countries worldwide in June of 2016. Such rapid expansion provides constructive insights regarding the significance of IDBM, not only in transportation but also in almost all other business fields. While at the same time Uber's legal battles in some cities around the world raise a serious question regarding the rationale of I…

Sociology and Political Sciencemedia_common.quotation_subjectHuman Factors and ErgonomicsBusiness modelConstructivedigital service platformEducationFrontierlegal battlesICT-driven disruptive business modelSharing economy0502 economics and businessEconomicsBusiness and International Managementmedia_commonta113Uber's global expansionRapid expansionconsolidated challenge to social demand05 social sciencessharing economyjakamistalousTransformative learningEconomyInformation and Communications TechnologyService (economics)050211 marketingco-evolutionary acclimatization050203 business & management
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The Power of Word-Frequency Based Alignment-Free Functions: a Comprehensive Large-Scale Experimental Analysis

2021

Abstract Motivation Alignment-free (AF) distance/similarity functions are a key tool for sequence analysis. Experimental studies on real datasets abound and, to some extent, there are also studies regarding their control of false positive rate (Type I error). However, assessment of their power, i.e. their ability to identify true similarity, has been limited to some members of the D2 family. The corresponding experimental studies have concentrated on short sequences, a scenario no longer adequate for current applications, where sequence lengths may vary considerably. Such a State of the Art is methodologically problematic, since information regarding a key feature such as power is either mi…

Statistics and ProbabilitySequenceSimilarity (geometry)Settore INF/01 - Informaticasequence analysisComputer sciencepower statisticsAlignment-Free Genomic Analysis Big Data Software Platforms Bioinformatics AlgorithmsScale (descriptive set theory)Function (mathematics)computer.software_genreBiochemistryComputer Science ApplicationsSet (abstract data type)Computational MathematicsRange (mathematics)Computational Theory and Mathematicssequence analysis; power statistics; alignment-free functionsalignment-free functionsData miningCompleteness (statistics)Molecular BiologycomputerType I and type II errors
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First record of Anisian deposits in the Betic External Zone of southern Spain and its paleogeographical implications

2023

In the External Zones of the Betic Cordillera (S Spain), upper Muschelkalk (Ladinian) facies have been known for decades; however, so far there is no stratigraphic record of Anisian deposits. In the present study, new biostratigraphic data from a carbonate succession in the easternmost Subbetic domain reveal a Pelsonian-Illyrian (Anisian) age. The nautiloids Germanonautilus salinarius and Germanonautilus saharonicus are documented for the first time in the Iberian Peninsula, and together with the brachiopod Tetractinella trigonella and the bivalves Neoschizodus orbicularis and Myophoria vulgaris they represent marker fossils of Anisian deposits previously described from many other basins, b…

StratigraphyPelsonianGeologyIndex fossilsMuschelkalkIllyrianGeologiaEpicontinental platformWestern Tethys
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