1,721,108 research outputs found
Fundamentals of organic electronic devices
No full textThis chapter introduces basic concepts of organic electronics, with the aim to provide an accessible, phenomenological introduction to the more advanced content discussed in detail in the following chapters. First, we deal with the basic optoelectronic properties of organic semiconductors, with emphasis on charge carrier transport phenomena, and then we discuss how to change the charge carrier concentration, by means of photogeneration and capacitive coupling phenomena. After addressing the subject of metal/semiconductor interfaces, we show how to exploit these physical properties in order to realize the main building blocks of electronics, such as (photo)-diodes and field-effect transistors. Purpose of this chapter is to offer a critical view, with a clear understanding of pros and cons of organic electronics, of the main differences with respect to traditional, inorganic electronics, and of the inherent trade-off between processability and performances
Electrospun Polymer Fibers for Electronic Applications
Full text linkNano- and micro- fibers of conjugated polymer semiconductors are particularly interesting both for applications and for fundamental research. They allow an investigation into how electronic properties are influenced by size confinement and chain orientation within microstructures that are not readily accessible within thin films. Moreover, they open the way to many applications in organic electronics, optoelectronics and sensing. Electro-spinning, the technique subject of this review, is a simple method to effectively form and control conjugated polymer fibers. We provide the basics of the technique and its recent advancements for the formation of highly conducting and high mobility polymer fibers towards their adoption in electronic applications
Bollettino della Associazione di Ingegneria Offshore e Marina - AIOM.
No full textLa rivista dell'AIOM (Associazione Italiana di Ingegneria Offshore e Marina) è periodica (3 numeri l'anno), e contiene articoli tecnici, scientifici, di economia applicata, di contrattualistica, di informazione scritti appositamente per l'Associazione da Autori eminienti. Inoltre: segnalazioni di eventi di volta in volta imminenti (congressi, conferenze, seminari nazionali ed internazionali), di libri, notizie, emissione di standard, ed altro. Partecipano al consiglio direttivo docenti universitari di idraulica e costruzioni idrauliche e professionisti del settore delle costruzioni marittime. L'AIOM è un'associazione culturale, senza fini di lucro, fondata nel 1982, volta alla conoscenza, allo studio, all'informazione in materia di ingegneria del mare: in particolare: - infrastrutture marittime, offshore, costiere - ricerca e sviluppo, a livello scientifico ed applicativo - questioni ambientali di settore - aspetti generali e speciali "marini" in senso lato - aggiornamento tecnico e tecnologico, dall'Italia e dall'estero - informazioni dall'industria - altre questioni intrinsecamente o intimamente connesse con le voci che precedono: economiche, della pianificazione pubblica, delle interazioni con il contesto urbano e territoriale, del rispetto delle architetture e della tradizione, del recupero dei siti storici e proto-industriali, gestionali, organizzative, contrattuali, normative e storiche. Il codice per la anagrafe della ricerca della Università di Bologna è: E18950
Bollettino della Associazione di Ingegneria Offshore e Marina - AIOM
No full textLa rivista dell'AIOM (Associazione Italiana di Ingegneria Offshore e Marina) è periodica (3 numeri l'anno), e contiene articoli tecnici, scientifici, di economia applicata, di contrattualistica, di informazione scritti appositamente per l'Associazione da Autori eminienti. Inoltre: segnalazioni di eventi di volta in volta imminenti (congressi, conferenze, seminari nazionali ed internazionali), di libri, notizie, emissione di standard, ed altro.
Partecipano al consiglio direttivo docenti universitari di idraulica e costruzioni idrauliche e professionisti del settore delle costruzioni marittime.
L'AIOM è un'associazione culturale, senza fini di lucro, fondata nel 1982, volta alla conoscenza, allo studio, all'informazione in materia di ingegneria del mare: in particolare:
- infrastrutture marittime, offshore, costiere
- ricerca e sviluppo, a livello scientifico ed applicativo
- questioni ambientali di settore
- aspetti generali e speciali "marini" in senso lato
- aggiornamento tecnico e tecnologico, dall'Italia e dall'estero
- informazioni dall'industria
- altre questioni intrinsecamente o intimamente connesse con le voci che precedono: economiche, della pianificazione pubblica, delle interazioni con il contesto urbano e territoriale, del rispetto delle architetture e della tradizione, del recupero dei siti storici e proto-industriali, gestionali, organizzative, contrattuali, normative e storiche.
Il codice per la anagrafe della ricerca della Università di Bologna è:
E18950
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
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