1,720,996 research outputs found
Progettazione e realizzazione di un sistema informativo per l'acquisizione e l'analisi dei dati LIDAR raccolti nell'ambito del progetto RITMARE
Full text linkNell’ambito del programma RITMARE, l’ENEA ha sostenuto lo sviluppo di un sistema informativo su web per l’acquisizione, la gestione, l’analisi e il reporting dei dati LIDAR raccolti durante le campagne oceanografiche. In particolare, i principali obiettivi sono stati individuati nei seguenti task: progettare un sistema informatico collegato al sensore LIDAR per salvare e visualizzare i dati in tempo reale, per effettuare analisi approfondite dei dati raccolti, per permettere il download di dati e informazioni in diversi formati. Il sistema inoltre accede ad un repository unico dei dati di missioni diverse per confronti e analisi comparate. Nel report si analizzano i requisiti funzionali e le specifiche supplementari adottate durante la fase di progettazione e sviluppo, che ha portato all’implementazione di un web server con
architettura multi-livello (presentazione, modello logico, base di dati) a cui l’utente accede tramite una facile interfaccia web strutturata a diversi livelli di utenza. Nel report sono mostrate le varie fasi di progettazione, il modello dei dati, ed alcuni esempi di report di analisi elaborati dal sistema su dati reali raccolti durante diverse campagne.In the frame of the Italian the RITMARE program, ENEA has supported the development of a web information system for the acquisition, management, analysis and reporting of LIDAR data collected during oceanographic campaigns. RITMARE is a Flagship initiative launched by the Italian Ministry of University and Research under the National Research Programs responsibility, and it involves an integrated effort of most of the scientific community working on marine and maritime issues, as well as some major industrial groups. The Diagnostic and Metrology laboratory is involved in WP2 of Subproject 5 (Observational systems based on remote sensing data) to develop a LIDAR system for marine parameters measurements. In details, the main objectives were identified in the following tasks: designing a computer system connected to the LIDAR sensor to save and display the data in real time to perform in-depth analysis of the collected data to allow downloading of data and information in different
formats. The system also allows to access a unique repository of previous mission data for data comparisons analyzes. The report analyzes the functional requirements and additional specifications adopted during the design and development phase, which led to the implementation of a multilevel web server (presentation, logical model, database) to which the user can have the access via an easy structured web interface at different user levels. The report shows the various designing phases, the data model, and some sample analysis reports processed by the system on real data collected during several campaigns
Report on LIF measurements in Seville. Part 1: Virgen Del Buen Aire Chapel
No full textNell’ambito di una collaborazione scientifica fra ENEA UTAPRAD e il Dip. di Scienze Naturali dell’Università di Siviglia “Pablo de Olavide”, volta allo sviluppo e alla sperimentazione di strumentazione innovativa per la conservazione di Beni Culturali, si riportano qui i risultati ottenuti in una campagna congiunta eseguita a Siviglia nel
febbraio del 2010; Nello specifico presentiamo i dati acquisiti mediante il sistema LIF scanning dell’ENEA utilizzato per eseguire misure sugli affreschi nella cappella della Virgen del Buen Aire, condotto nell’ambito di un progetto di ricerca su tecnologie non distruttive diretto dallo IAPH. Questi risultati fanno parte del progetto di conservazione
condotto dallo IAPH. Le immagini LIF raccolte sono discusse per evincervi la capacità di estrarne informazioni su precedenti azioni di restauro, in particolare riguardanti ritocchi dei pigmenti e aggiunta di consolidanti. A seguito della gran mole di dati raccolti su ciascun punto tramite il sistema di rivelazione iperspettrale, nel corso del lavoro per
elaborare le immagini sono stati utilizzati approcci statistici operatori di proiezione, come descritto nel testo.Within the frame of a scientific cooperation between ENEA UTAPRAD (Frascati) and UPO Natural Sciences Dep. (Seville), aimed at developing and testing innovative diagnostic instrumentation for Cultural Heritage preservation, this report deals with results obtained in a joint campaign carried on in Seville during February 2010. Namely the data acquired by the ENEA LIF scanning system operated on fresco’s in Virgen del Buen Aire Chapel are presented here. The Virgen del Buen Aire Chapel has been studied according to the Research Project of “Non Destructive Techniques” managed by IAPH (Consejería de Cultura de la Junta de Andalucía). The results have been also implemented as part of a conservation project carried out by IAPH. LIF images are iscussed in term of evaluating former restoration actions, in particular retouches on pigments and consolidant additions on a painted wall and two vaults. Statistical approaches and projection operators have been utilized for elaborating the images in order to handle the large number of spectra collected in each scanned point by our hyper-spectral system
Implementazione di un modello inverso di source apportionment per la stima di emissioni industriali
Full text linkQuesto documento riporta la descrizione e il commento del processo di implementazione di una catena modellistica di source apportionment per la quantificazione delle emissioni diffuse da sorgenti industriali. Lo schema seguito è quello delineato dalla norma EN UNI 15445 e documentato in letteratura, che prevede una simulazione atmosferica con un modello di dispersione, seguita da una regressione multilineare per risolvere il problema inverso.
Un modello di dispersione (AERMOD), è un modello stazionario a plume che calcola la dispersione atmosferica a partire dalla struttura della turbolenza nello strato limite planetario e concetti di scaling e tratta sorgenti sia al suolo che elevate, così come orografia semplice o complessa). Il modello è quindi stato implementato ed è utilizzato per calcolare l’impatto di ogni sorgente sulla rete di recettori, previa inizializzazione con caratteristiche del suolo e dati meteo misurati. Viene qui allora descritta la procedura di acquisizione automatica dei dati e pre-processamento necessario all’utilizzo di AERMOD. Infine, un modello di regressione multilineare è utilizzato per stimare i valori delle emissioni diffuse dalle due acciaierie, sia su base oraria che su base giornaliera. E’ stimata anche la sensibilità del modello a vari parametri in input, e la possibile interferenza con altre sorgenti prossime. Vengono infine discussi i punti critici dell’intero procedimento, sia sulla parte diretta che inversa, suggerendo
possibili strategie per il loro superamento.This document describes the implementation process of a source apportionment modeling chain for quantifying emissions coming from industrial sources. The scheme is outlined in EN UNI 15445 and documented in literature, which provides an atmospheric simulation with a dispersion model, followed by a multilinear regression to solve the reverse problem.
A dispersion model (AERMOD) is a stationary plume model that calculates atmospheric dispersion from the structure of turbulence in the planetary boundary layer and scaling concepts, and involves both ground and elevated springs, as well as simple or complex orography). The model has been implemented and used to calculate the impact of each source on the receptor network, after initialization with soil characteristics and measured weather data. Here comes the procedure for automatic data acquisition and pre-processing required for the use of AERMOD. Finally, a multilinear regression model is used to estimate the emission values of diffused by the two steel mills, both on hourly and daily basis. The model's sensitivity to various input parameters, as well as possible interference with other near sources, has been also estimated. Finally, the critical points of the entire process are discussed, in both direct and the inverse side, suggesting possible strategies for overcoming them are presented
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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