1,721,112 research outputs found
Una nuova governance per lo sviluppo
No full textNell'analisi economica, lo spazio non e' considerato soltanto come una sorgente di costo per le imprese, ma diviene il punto di incontro tra gli attori dello sviluppo, in cui si organizzano le forme di cooperazione tra le imprese e si decide la divisione sociale del lavoro. Il passaggio dai Distretti Industriali ai Distretti Produttivi in Puglia e' nato inizialmente dalla necessita' di distaccarsi da una logica frammentata per passare ad una visione globale del territorio
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
A particle swarm approach for flight path optimization in a constrained environment
No full textPotentials of Particle Swarm Optimization techniques in the field of flight path generation are investigated in this paper. The objective is the development of a particle swarm-based procedure performing off-line two-dimensional flight path optimizations compliant with operational constraints. Assuming a typical surveillance mission, such constraints are defined in terms of "target" and "no-fly" zones, desired flight time on targets, fixed way-points and landing areas. Flight path is described through a discrete number of suitable flight parameters varying within defined ranges, each particle of the swarm being represented by a numerical combination of these parameters. A novel obstacle avoidance model based on the evaluation of a so-called area function has been introduced. All trajectories, made up of circular arcs and straight lines, start from a specified point with fixed velocity vector, ending within a selected landing area. Both single-objective and multi-objective optimization procedures have been formulated and implemented. The former minimize the total flight path length; the latter also try to maximize the trajectory length covered over specified target areas. Sensitivity studies with increasing problem complexity have been performed changing both number and positions of "target" and "no-fly" zones in order to assess the effectiveness as well as the robustness of the proposed approach. Algorithm capability in finding the optimum path through non-circular and concave obstacles has also been tested. Finally computational time monitoring allowed making a preliminary assessment of Particle Swarm Optimization suitability for practical applications. © 2012 Elsevier Masson SAS
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
Ottimizzazione della configurazione preliminare di un velivolo da trasporto commerciale con l’utilizzo di algoritmi genetici
No full textNel presente lavoro viene valutata l’applicabilità di algoritmi di tipo genetico per l'ottimizzazione della configurazione preliminare di un velivolo da trasporto commerciale; in particolare viene esaminato il caso di un velivolo di classe "Short/Medium Range" dotato di motorizzazione turbofan. L'obiettivo è l'elaborazione di un codice di calcolo in grado di fornire la configurazione avente il minimo peso massimo al decollo, attraverso la definizione di quelle grandezze che tipicamente vengono richieste nella prima fase di un progetto aeronautico (peso massimo al decollo, peso a vuoto operativo, superficie alare e sua forma in pianta, spinta dei motori installati, dimensioni della fusoliera, ... ). I risultati ottenuti dimostrano che la procedura di ottimizzazione proposta converge con un numero relativamente modesto di "individui " e di "generazioni", verso la configurazione di minimo peso massimo al decollo, compatibilmente con i requisiti assegnati
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