1,720,970 research outputs found
The role of public mass catering in local foodshed governance toward self-reliance of Metropolitan regions
No full textEuropean Union policy promotes the redesigning of food systems, with special focus on peri-urban agriculture and the metropolitan regions food self-sufficiency. In this context, the study has evaluated the feasibility of “urban food procurement model” (URP-model); which is prepared based on the institutional mass catering fed by local and short supply chains, considering Milan metropolitan region a case study. A methodology was proposed to assess the potential food-self-reliance, and data-driven and geographical mapping approaches were used to define the foodshed’ borders, on the basis of spatial information about local supply and demand. The URP-Model was evaluated via SWOT analysis with the main actors having a key role in the local food policy and public mass catering management. Results indicated the local supply chains that could be involved into the URP-model and their potential contribution to the public institutions food self-reliance. The related opportunity maps show the extension of foodshed for different foodstuff categories. An overview about the barriers for the URP-model development and about its potential as tool to going toward food smart governance of metropolitan areas, is provided. The results can be effective for the planning of food system by the authorities involved with the public mass catering
How Organic Rice Farming Impacts the Biodiversity: A Case Study of the Rice Paddies in North Italy
Full text linkdepartmental bulletin pape
Different phytotoxic effect of Lolium multiflorum Lam. leaves against Echinochloa oryzoides (Ard.) Fritsch and Oriza sativa L.
No full textRice cultivation, particularly prone to weed issues, requires practices able to effectively control them, however reducing the use
of herbicides, responsible for damage to human health and ecosystem sustainability. Alternative strategies for weed management
can be based on plant-plant interaction phenomena. In this context, a group of organic farmers has developed a pragmatic
approach for weed containment using Lolium multiflorum Lam. as a cover crop before rice. The present study aimed to confirm
the farmer field observations reporting a preferential inhibitory effect of L. multiflorum on Echinochloa oryzoides (Ard.) Fritsch,
one of the most yield-damaging rice weed, compared with Oryza sativa L. The study showed that L. multiflorum was able to
significantly reduce the seed germination of E. oryzoides. It was found to be more susceptible than O. sativa both to the effect of
the aqueous extract and powder of L. multiflorum leaves (23 – 79% vs. 3 – 57% and 26 – 100% vs. 23 – 31%, respectively). In
addition, the leaf extract was able to affect E. oryzoides growth starting from 20% concentration both in relation to the root
and shoot length while O. sativa exhibited differences compared with the control only under the influence of extract 50%. The
L. multiflorum leaf characterization by NMR and UPLC-HR-MS analyses led to the identification of 35 compounds including
several polyphenols, glycosyl flavonoids and glycosyl terpenoids, as well as different amino acids and organic acids. Some of
them (e.g. protocatechuic and gallic acids) are already known as allelochemicals confirming that L. multiflorum is a source of
plant growth inhibitors
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
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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