1,721,009 research outputs found
Una riflessione geografica sulla possibile interazione fra obiettivi di COP21 e Food Security: l’Unione Europea e la sfida della riorganizzazione del sistema alimentare
No full textNell’affrontare il tema della sicurezza alimentare alla luce dei principi dello sviluppo sostenibile e responsabile, le questioni dell’alimentazione in senso lato, della produzione di cibo e della relativa distribuzione risultano di fondamentale importanza, soprattutto se lette in relazione con la crescita demografica e l’aumento dell’aspettativa di vita individuale a livello globale.
In particolare, la persistente diffusione di modelli di allevamento intensivi dal grande impatto ambientale (sia in termini di inquinamento che di consumo di suolo e di acqua) rappresenta una problematica grave ed urgente da affrontare, che rischia di apportare ulteriori nuovi squilibri sia a livello di Capacità di Carico della Terra, che di crescente pressione demografica.
Emerge quindi la necessità di orientare questo settore verso un nuovo approccio, funzionale alla riprogrammazione dell’intero sistema alimentare mondiale in termini di sostenibilità, sottraendolo alle dinamiche della produzione industriale fine a se stessa che lo hanno ispirato in questi ultimi cinquanta anni circa, per conciliare le esigenze di una popolazione, crescente in linea esponenziale, con quelle di un pianeta con risorse sempre più limitate.
Il presente paper si prefigge lo scopo di analizzare le prospettive territoriali alla scale globale come a quella locale, attualmente in fase di consolidamento, anche alla luce delle principali iniziative promosse dall’Unione Europea (Accordo di Parigi COP21) sul tema della riorganizzazione complessiva del sistema alimentare, con una particolare attenzione al
consumo di carne ed alle relative modalità di produzione rispetto ad un settore che, negli ultimi decenni, ha indubitabilmente arrecato rilevanti danni all’ambiente
Time - frequency analysis in an open - air theater
No full textAcoustics measurements have been carried out along the steps of an ancient open-air theater. Source positions were fixed in several points in the orchestra while microphones, radially placed, were rotated sector by sector, spatially sampling the cavea. Measurements analysis allowed some speech and music sound quality index calculation for each source-microphone couple. Moving from the observation of acoustic quality indexes a time-frequency analysis of impulse response is presented in this paper. Timefrequency analysis of impulse response gives hints for new considerations about the sound field in this peculiar environment
Of Leto: a staged concert reading
No full textabstract: Of Leto: a staged concert reading is a new work development created by Alexander Tom and Daniel Oberhaus focusing on collegiate collaboration, production process, and creative intuition. An original story was adapted by Daniel Oberhaus into a working libretto. Alexander Tom created a two-act musical-drama and utilized the colleges on the Arizona State University \u2014 Tempe campus: Barrett, the Honors College, W.P. Carey School of Business, the College of Liberal Arts and Sciences, and the Herberger Institute for Design and the Arts: School of Music and School of Theatre, Film and Dance. This cross-discipline staged concert reading was comprised of a libretto by Daniel Oberhaus, music, additional lyrics and orchestrations by Alexander Tom, and orchestrations by Drew Nichols. The performance included a thirteen-piece orchestra and fourteen vocalists in undergraduate and graduate programs. This paper includes research on Benjamin Britten and Myfanwy Piper's Death in Venice and Stephen Sondheim and Hugh Wheeler's Sweeney Todd, the Demon Barber of Fleet Street. Its purpose is to impart a comparative analysis on the process of collaboration in opera, musical theatre, and the newly determined "musical-drama" \u2014 the genre in which Of Leto resides. Use of historical research will expound on the evolution of musical theatre along with each team's collaborative processes in relation to the music (lyrics and melody respectively), the libretto, and the production. The research permits conclusions regarding the possible practices to utilize in creating new student works like Of Leto
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 study of the acoustic qualities of the ancient theatre in Segesta
No full textAlthough many centuries have passed, in many ancient theatres evocative theatrical performances still take place, especially during summer. Greek and Latin architects’ care for equilibrium of proportions offers not only an intense quality of view but also a high quality acoustics. In this study we made an analysis both theoretical and experimental of the acoustic qualities of the ancient theatre of Segesta, in Sicily, an open-air theatre of almost 4000 seats, actually difficult to date with precision (II century B.C. or IV century B.C.). By the studying of Vitruvius treatise, "De Architectura", the comprehension of geometrical methods and proportions used to plan the theatre was made possible; with the help of surveys a graphic reconstruction of the theatre was made in order to use it in a predictive software. Measurements were carried out placing sound source in many points of the theatre. The results were compared with the ones obtained from the predictive software and the subjective sensations gathered during classical performances in the theatre
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