1,720,960 research outputs found
Nuovi strumenti per valutare la sostenibilità globale
No full textL’utilizzo di strumenti integrati di analisi che misurano la sostenibilità, quali ad esempio Q-cumber®, permette di valutare la presenza e le ricadute di attività impattanti sull’azienda agricola, supportando l’imprenditore nella scelta delle possibili azioni correttive gestionali e struttural
The integrated Q-cumber multi-modeling approach for total sustainable agriculture exploitation
No full textSustainability in agriculture cannot be confined as a list of good practices: indeed, as outlined by Aarhus Convention in 1998, it involves not only environmental issues, but also introduces economic and social issues. As a consequence an effective approach has to consider all of such three pillars.
In the present paper this is fulfilled through a novel approach based on an interactive platform (namely Q-Cumber) developed by the same authors, integrating interactive maps, crowd-sourcing, and real-time data. The platform allows monitoring of local areas, through an integrated use of environmental data, simulation models and direct participation of citizens on Google Maps.
Specifically, a case study based on an agriculture and livestock farm is analyzed. Direct environmental impacts on air, water and soil (from PM10, NOx, COD,...) and indirect impacts are quantified, taking advantage of Dynamic Computational Geographic Information System and allowing definition of corrective actions for improvement of environmental performance. Additionally, it is shown how careful analysis of the surrounding stressors (roads, industries, etc) can help farm management, providing indications for minimization of different pollutants effects on farm production
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
Determination of local nitrogen loss for exploitation of sustainable precision agriculture: Approach description
No full textNitrogen management is an issue in agricultural sustainability. Compared to conventional tillage, precision agriculture practices can potentially improve nitrogen cycle efficiency, with positive benefits on crops, soils and environment. The present paper discusses the result of precision agriculture on nitrogen management, taking into account a 52 ha experimental site, in a private farm in a typical Po Valley field in north-eastern Italy, monitored from 2013 to 2015. The area is cultivated with corn (Zea mays) managed with variable rate application of fertilizer. Available data were combined in order to estimate with a 10×10 m resolution the actual efficiency in Nitrogen utilization and to quantify local losses, mainly due to denitrification, volatilization or leaching. Results show how an average loss of 76 kg.ha-1 per year was found in the experimental site, and only 11.5 % of the total area undergoing losses higher than 200 kg.ha-1. Clearly the identification of critical areas can help definition of correction actions to be implemented to reduce and minimize the impact on agriculture on environment
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
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