1,721,005 research outputs found
Short and long term antihypertensive effects of renal angioplasty vs. medical treatment in patients with atherosclerotic renal artery stenosis
No full textLa pesca responsabile in Italia: un percorso di ricerca
No full textLo studio si è incentrato sulla distinzione tra comportamento responsabile apparente e reale, fondata sui risultati dell’approfondimento teorico delle motivazioni alla base del comportamento individuale, che individua il comportamento razionale come quello proteso alla stabilizzazione o al miglioramento o alla massimizzazione del profitto, mentre la natura della condotta responsabile è definita da tre postulati dei quali il primo non può che risiedere nella riduzione dello sforzo di pesca; gli altri sono i postulati della volontarietà e quello della (dis)utilità economica. Da questi risultati deriva un’ulteriore considerazione che attiene alla natura dei premi e che richiama il concetto di efficacia biologica, da intendere come comportamento capace di avviare ad una effettiva ricostituzione degli stock; comportamento, questo, il cui esito positivo è, tuttavia, fortemente influenzato da fattori esogeni non direttamente controllabili da chi esercita a livello individuale l’attività di pesca. Ne consegue, pertanto, che nel caso di risultati biologici non favorevoli conseguenti alla condotta intrapresa, il premio avrebbe non solo la natura di indennizzo per le perdite economiche subite, ma anche una finalità esclusivamente socio-economica, se si tiene conto sia dei livelli di reddito mediamente non elevati percepibili dagli operatori a cui è associabile, conseguentemente, un’alta “disutilità” marginale, sia delle esigue opportunità occupazionali alternative esistenti per i marittimi imbarcati che potrebbero risultare in esubero in corrispondenza di valori più contenuti delle variabili di controllo. Infine, la fissazione di un premio per i comportamenti responsabili reali assume la natura di incentivo economico all’adozione di tale condotta anche per quegli operatori che non hanno seguito tale comportamento
Les «roches vertes Alpines ». Production et Circulations Neolithiques en Italie Septentrionale
No full textThe “alpine greenstones” are high pressure metaophiolites (eclogites, jades, serpentinites, omphacitic and glaucophanic schists...), a row material used for the production of polished artifacts (axe-blades, bracelets...). Their use started in the Early Neolithic (half of the 5th millennium BC) and finished during 3rd millennium. The sources of raw material are the primary outcrops of the group of Voltri, the Mont Viso, the Suse and Aoste valleys, the derived Oligocene conglomeratic deposits, the unconsolidated clastic deposits on the Alps and Apennine valleys as well as the alluvial and the morainic deposits (Piedmont, Ligury, Aoste Valley, Southwestern Lombardy). Raw materials from the primary alpine were privileged for the production of the large ceremonial blades of European distribution. The detritus origin prevails for the manufacture of utilitarian blades discovered in Northern Italy. The site of Rivanazzano is presented here by its exceptional characteristics; the technological observations and the petrographic analysis allow comparisons with some Neolithic sites of Northern Italy and allot to Rivanazzano a specialized function of center of production
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Device for correcting a digital estimate for an electring signal
No full textA device for correcting a digital estimate of an electric signal is described. The device includes a comparator that generates a current proportional to the difference between an analog estimate signal, which derives from the digital estimate, and the electric signal. The device also includes a capacitor positioned to be charged by the current, a transistor that discharges the capacitor, and a comparator that compares the voltage at the terminal of the capacitor with a reference voltage. The device also includes a controller that drives the transistor in response to the output signal of the comparator and a logic device that generates a correction digital signal to be added to or subtracted from the digital estimate of the electric signal in correspondence of an ascending or descending waveform of the electric signal
Variations on the Author
Get PDF“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
“Device to effectuate a digital estimate of a periodic signal, related method and control system for electic motor which comprise said device ”
No full textA device for effectuating a digital estimate of a periodic electric signal is described. The device comprising a linear DAC having an output signal, a comparator that compares the output signal of the linear DAC with the periodic electric signal, and logic circuitry having in input the output signal of the comparator and a pulse clock signal. The logic circuitry provides a first digital signal in input to the linear DAC and a second digital signal representative of the estimate of the periodic electric signal
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