305,399 research outputs found
Sensing Strategies of Agri-Food: Advanced Instrumentation for Quality Assurance, Agricultural Enhancement, and Environmental Safety
No full textQuesta tesi si occupa di innovazione tecnologica nel settore agroalimentare, integrando sistemi sensoriali all’avanguardia per migliorare la valutazione della qualità degli alimenti, ottimizzare la produzione agricola e potenziare la sicurezza ambientale. Il primo progetto introduce un nuovo modello analitico per i Paper-Based Electrical Gas Sensors (PEGS) mirato al rilevamento del deterioramento degli alimenti. Questo modello aumenta la sensibilità e la selettività dei PEGS attraverso una geometria degli elettrodi ottimizzata e incorpora la Near Field Communication (NFC) per la trasmissione dati senza fili. La fattibilità economica e la validazione empirica di questi sensori sottolineano il loro potenziale nella riduzione degli sprechi alimentari e nel progresso delle tecnologie di imballaggio intelligente degli alimenti. Il secondo progetto esplora l'uso di nanofili di Arseniuro di Indio (InAs) nel monitoraggio ambientale, concentrandosi sulla loro capacità di rilevare inquinanti come NO2 e l'umidità relativa. Un sistema di misurazione a due canali sviluppati appositamente valuta le proprietà dei nanofili di InAs, come sensori , valutandone rumore e affidabilità. Questo studio evidenzia i vantaggi dei nanofili di InAs, inclusa un'aumentata sensibilità e stabilità strutturale, per il monitoraggio ambientale in tempo reale. Il terzo progetto sviluppa un sistema autonomo basato su LoRaWAN per il monitoraggio della Root Zone Temperature (RZT) nella coltivazione idroponica del basilico. Questo sistema supera i limiti del monitoraggio tradizionale utilizzando la tecnologia LoRaWAN per una trasmissione dati a lunga distanza efficiente e l'integrazione cloud per l'analisi dei dati in tempo reale, portando a pratiche agricole migliorate e un aumento della resa del basilico. Insieme, questi progetti dimostrano l'impatto trasformativo dei sistemi sensoriali, della nanotecnologia e della comunicazione wireless nel potenziare le tecnologie agroalimentari. Essi contribuiscono a un futuro sostenibile ed efficiente per la produzione e la distribuzione alimentare, guidato dall'innovazione tecnologica.This thesis deals with technological innovation in the agri-food sector, integrating cutting-edge sensory systems to improve food quality assessment, optimize agricultural production, and enhance environmental safety. The first project introduces a new analytical model for Paper-Based Electrical Gas Sensors (PEGS) aimed at detecting food deterioration. This model increases the sensitivity and selectivity of PEGS through optimized electrode geometry and incorporates Near Field Communication (NFC) for wireless data transmission. The economic feasibility and empirical validation of these sensors underscore their potential in reducing food waste and advancing smart food packaging technologies. The second project explores the use of Indium Arsenide (InAs) nanowires in environmental monitoring, focusing on their ability to detect pollutants such as NO2 and relative humidity. A specially developed dual-channel measurement system assesses the properties of InAs nanowires as sensors, evaluating their noise and reliability. This study highlights the advantages of InAs nanowires, including increased sensitivity and structural stability, for real-time environmental monitoring. The third project develops an autonomous system based on LoRaWAN for monitoring the Root Zone Temperature (RZT) in hydroponic basil cultivation. This system overcomes the limitations of traditional monitoring by using LoRaWAN technology for efficient long-distance data transmission and cloud integration for real-time data analysis, leading to improved agricultural practices and an increase in basil yield. Together, these projects demonstrate the transformative impact of sensory systems, nanotechnology, and wireless communication in enhancing agri-food technologies. They contribute to a sustainable and efficient future for food production and distribution, driven by technological innovation
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Mining e-mail content for author identification forensics
No full textWe describe an investigation into e-mail content mining for author identification, or authorship attribution, for the purpose of forensic investigation. We focus our discussion on the ability to discriminate between authors for the case of both aggregated e-mail topics as well as across different email topics. An extended set of e-mail document features including structural characteristics and linguistic patterns were derived and, together with a Support Vector Machine learning algorithm, were used for mining the e-mail content. Experiments using a number of e-mail documents generated by different authors on a set of topics gave promising results for both aggregated and multi-topic author categorisation
Variations on the Author
No full text“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
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