1,720,955 research outputs found
Haptic models of arrays through 3D printing for computer science education
No full textComputer science is taught as a regular subject in the school systems of many countries. Most tools used to teach main topics of computer science curricula, such as data structures and algorithms, are visually oriented. Our work aims to assist visually impaired students to understand fundamental data structures and algorithms through 3D printed haptic models. We developed a simple but general method that can be used by the teacher to introduce data structures and algorithmic thinking to both visual impaired and sighted students in inclusive classes. We evaluated our models for teaching one-dimensional arrays to both visual impaired and sighted students
Investigation of series-parallel connections of multi-module batteries for electrified vehicles
Full text linkLarge-format Lithium-ion battery packs consist of the series and parallel connection of elemental cells, usually assembled into modules. The required voltage and capacity of the battery pack can be reached by various configurations of the elemental cells or modules. It is thus worth investigating if different configurations lead to different performance of the battery pack in presence of a mismatch in the cell characteristics. A simulation tool is developed in this work and applied to a battery pack consisting of standard 12 V modules connected with various serial/parallel topologies. The results show that battery configurations with modules directly connected in parallel and then assembled in series are more robust against variation of the cell capacity through the battery. Moreover, given the cells and the battery configuration, we show that changing the position of the cells has a significant impact on the usable capacity of the battery
Studio, progetto e implementazione di un Trusted RFID Reader
No full textIl presente lavoro di tesi, sviluppato presso la CAEN RFID S.p.A., azienda situata a Viareggio (LU) che si occupa della produzione di lettori e tag RFID UHF, ha l’obiettivo di realizzare un Lettore RFID Fidato e si inserisce nell’ambito del progetto BRIDGE.
Nel 1° capitolo viene presentato una quadro introduttivo sui sistemi RFID, riportandone brevemente i principi di funzionamento, la classificazione, gli standard e le applicazioni, con particolare riferimento alla supply chain.
Nel 2° capitolo sono analizzate la sicurezza dei sistemi RFID e le problematiche di privacy e integrità dei dati ad essa legate. Viene quindi presentato lo stato dell’arte, illustrati e motivati i requisiti di sicurezza posti da BRIDGE per la rimozione delle barriere che impediscono ancora l’ampia diffusione delle supply chain collaborative.
Nel 3° capitolo si definisce il concetto di Trusted Computing e di Lettore RFID Fidato, presentandone architettura, caratteristiche e componenti, illustrando e motivando le specifiche poste da BRIDGE per la sua realizzazione.
Nel 4° capitolo vengono descritte le componenti hardware selezionate per la realizzazione del prototipo del Lettore RFID Fidato, motivandone la scelta e mostrandone la conformità alle specifiche del progetto.
Nel 5° capitolo sono presentati il flusso di progetto, l’ambiente di sviluppo, tutti i software e gli strumenti utilizzati nelle fasi di progetto per ottenere il lettore prototipale
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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