1,721,079 research outputs found
Agricoltura in contesto periurbano: ruralità sostenibile e tutela dell'ambiente
No full textConsumers, in recent years, mainly in relation to events highlighting the possible risks for human health, have lost their confidence in the idea that the primary food sector can guarantee the specific origin, production techniques, and safety of food produced. Moreover, agriculture and especially livestock, is often considered to be responsible for a significant amount of non point source pollution.
This phenomenon is emphasised in geographic areas where agricultural activity intensively interfaces with urban centres, where if from one side the role of environmental protection is more valuable, from the other the negative externalities produced by the primary sector are more clearly perceived. Thus, the problems faced are related to the difficulty for agriculture in maintaining sustainability, guaranteeing at the same time environmental quality (and food safety), which are becoming absolutely necessary in peri-urban areas.
In this direction, scientific research has produced several specific solutions on very focussed topics, but as yet, no validated models have been produced for the integrated application of principles and techniques in order to achieve the objectives of economic sustainability and environmental protection.
The activity devised with this methodology is based on interventions related both to farms, where it is necessary to combine the different aspects of a multifunctional and sustainable agriculture, and to different social components involved. As a result, the identification of a production system or practice (including environmental safeguards) with the specific territory in which the system operates will allow products there from to increase in value and, therefore, to make production sustainable also from the economic point of view.
The implementation of such a system will facilitate, in the mid term, sustainability of the agricultural sector, and also identify possible approaches in relation to the modification of EU policy of subsides and to the related requirements of cross-compliance
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
Valorizzazione del sistema rurale nella pianificazione territoriale locale
No full textLa pianificazione del territorio locale richiede sempre più esplicitamente il mantenimento delle funzioni paesaggistiche culturali e ambientali del sistema rurale.
L’analisi dei possibili scenari di rappresentazione delle scelte di pianificazione richiede una metodologia basata su sistemi informativi territoriali e adeguate banche dati numeriche. In particolare le Province Lombarde nella redazione del Piano Territoriale di Coordinamento Provinciale (PTCP) devono definire gli ambiti destinati all’attività agricola di interesse strategico e stabilire i criteri di definizione alla scala comunale della aree agricole.
A supporto dell’attività della Provincia di Lodi, è stata effettuata la revisione del
Sistema Informativo Territoriale (SIT) del Settore Agricoltura in modo adeguarlo alle
funzioni di pianificazione previste. L’efficacia dello strumento informatico è stata potenziata, portando la scala di lavoro al dettaglio particellare e consentendo l’attività di caratterizzazione del territorio con uno schema di valutazione multicriteria basato su diversi indicatori e obiettivi diversificati. L’applicazione nel caso della definizione degli Ambiti Agricoli Strategici ha richiesto la definizione di indicatori che tenessero in debito conto l’aspetto produttivo, multifunzionale, paesaggistico e ambientale del territorio rurale. Il presente lavoro, oltre alla descrizione della metodologia e degli strumenti sviluppati descrive i risultati dell’individuazione degli Ambiti Agricoli Strategici a scala provinciale che hanno portato alla definizione di tutto il territorio agricolo provinciale come ricadente negli ambiti agricoli strategici, anche nelle zone periurbane. Grazie allo strumento utilizzato non è stata prodotta una mera perimetrazione statica del territorio, ma un sistema di conoscenza finalizzato alla valutazione dinamica del
territorio, utile anche per il monitoraggio del PTCP nel corso della sua validità operativa
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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