1,721,059 research outputs found
Aspects and problems of changing economic utilization of the land in Italy and the corresponding soil consumption
No full textThe study moves from the observation that, in the last fifty years (1961-2010) the territory of our country, like those of other countries with advanced economies, has undergone extensive economic processes of change in the use of land, mostly due to a strong reduction of Agricultural Area Use (AAU), whose consistency - on the basis of official statistics (National Statistics Institute) and, in particular, the results of the General Census of Agriculture - is estimated at around 7,8 million hectares, from 20, 7 million hectares in 1961 to 12,9 million in 2010. It should be noted in fact that the intensity of the processes of reduction of the UAA was much greater in the first three decades, compared to subsequent of entire period, in which there has been a growing flowering of studies and research on the subject, aimed to analyze causes, modes and effects of the change in the economic use of the land with reference to agriculture, to rural world and the entire socio-economic system
Influence of the tethering system on the seismic response of submerged floating structures (SFT)
No full textpaper N 287, 9 pp., contributo su C
Numerical models for the dynamic response of submerged floating tunnels under seismic loading
No full textThe modeling of tethering elements of seabed anchored floating structures is addressed, with particular
reference to the so-called Archimedes Bridge (submerged floating tunnel, SFT) solution for deep water
crossing; attention is devoted to the design solution encompassing slender bars as anchor elements. Two
numerical tools are proposed: firstly, a geometrically nonlinear finite element (NWB model), developed
in previous work, has been refined in order to capture the effect of higher flexural modes of anchor
bars. Secondly, a 3D beam element, based on the classical corotational formulation (CR model), has
been developed and coded. Both elements are implemented in a numerical procedure for the dynamic
time domain step-by-step analysis of nonlinear discretized systems; seismic loading is introduced by
generating artificial time histories of spatially variable seismic motion. An example of application of the
NWB element is shown regarding the behavior of the dynamic model of a complete SFT. The model
was subjected to extreme multiple-support seismic loading. The seismic behavior is here illustrated and
commented, especially in light of the effect of higher local vibration modes of the anchor bars. Finally, a
comparison between the performances of the two modeling approaches is presented. Both harmonic and
seismic excitations are considered in the test; the results justify the use of the simpler NWB approach,
especially in the SFT design phase
Dynamic response of submerged floating tunnel to seismic excitation: modelling aspects
No full textPubblicazione su CD-ROM, 10 pp
Effects of the anchoring systems on the dynamic behaviour of the submerged floating structures (SFT)
No full textSommario su volume (pp. 260-261). Allegata memoria su CD (ST6.1, 12 pp.
The dynamic behaviour of submerged floating tunnels
No full textpubblicazione su DVD + abstract su libro p. 25-2
“Ea quae obscura sunt aperienda”. Parola e Scrittura in Agostino
No full textL’antico dilemma fra immediatezza e mediazione, fra la positività del dato d’esperienza, che s’impone di per sé con una propria forza di attestazione, e l’universalità della ricognizione trascendentale, che accetta la problematicità di una distanza critica dal mondo fenomenico in cambio di un rigore conoscitivo altrimenti irraggiungibile, ha trovato un importante banco di prova proprio nel punto di intersezione fra fenomenologia ed ermeneutica. In una certa misura, questo moto pendolare ha una qualche connessione con la difficoltà di raccordare, a livello diverso, intelligenza teologica della fede e fedeltà all’evento inaudito della rivelazione, custodito dalla Scrittura.
La stessa rilettura di Agostino nell’ambito del pensiero contemporaneo riflette questa oscillazione; del resto, la sua opera non solo è aperta una pluralità di letture, ma teorizza e incoraggia esplicitamente un pluralismo interpretativo, all’origine delle forme diverse attraverso le quali si modula nella storia il rapporto tra fede cristiana e ricerca filosofica. L’intervento chiama in causa alcune interpretazioni recenti e in qualche modo paradigmatiche dell’incrocio fra parola e Scrittura in Agostino, che può essere ripensato anche come tensione fra “confessio” e “doctrina”. In tale prospettiva l’eredità di Agostino può dirsi esemplare per la tradizione cristiana: non solo sul piano dei contenuti, in particolare per la elaborazione di una ontologia semantica a partire da un intreccio – discusso e suggestivo – di metafisica e cristologia, ma ancor più sul piano del metodo, soprattutto per l’invito a sussidiare l’esercizio esegetico con una riflessione ermeneutica di secondo livello, evitando di risolvere l’incontro con la Parola di Dio nella effimera occasionalità di un contatto immediato e ingenu
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
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