1,721,000 research outputs found
Preliminary assessment of a methodology for determining food waste in primary school canteens
No full textReducing food losses and waste is increasingly seen as a main way to improve sustainability of food systems, both in itself and as a way to question and improve the efficiency of resource use. Numerous studies have stressed the need to improve data collection and analysis of main causes of food losses and waste particularly in the last parts of the food chain. The project REDUCE, financed by the Italian Ministry of Environment and Protection of Land and Sea, aims to improve data collection on waste in the last stages of food chains and to identify innovative solutions to reduce it. This paper presents the first results of a study developed as part of this project. The objective of this study is to devise an innovative methodology to assess food waste in school canteens that is at the same time accurate, easy to transpose, does not require external support, provides all the useful data on quantity and nutritional quality of food waste (to enable comparison of food intake in children with dietary recommendations such as the Dietary Guidelines for Italians) and involves all concerned actors: kitchen employees and teachers, as well as the pupils themselves, so that monitoring becomes an instrument of active learning
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
The New Nordic Diet as a prototype for regional sustainable diets
Full text linkA main challenge in sustainable food systems is to link sustainable production to sustainable diets and consumption patterns. The new Nordic diet (NND) builds on and shares the Mediterranean diet (MD) thinking, but utilizes the ingredients and flavours of a northern climate. In both diets, variation in produce, organic, local production and seasonality are essential, all of which contribute to the preservation of the local landscape and sea, as well as to the health of the consumers. The agricultural biodiversity plays a huge role and provides a variety of plant and animal food products from both wild and domesticated sources.Both diets have been associated with health benefits. The NND is a prototype regional diet taking health, food culture, palatability and the environment into account. Thus, the principles and guidelines could be applied in any region of the world. There are currently activities for initiating, modeling and assessing these transformation processes
Learning from the organic food system as a model for sustainable food systems - the Organic Food System Program
Full text linkToday’s understanding of food systems includes product-specific values (e.g. palatability, taste, nutritional and safety values, health promotion) and process-oriented values (e.g. environmental impact, animal welfare and social fairness). These values are currently challenged and changing. Food habits, cultural, social, ethical, economic and political criteria play an increasingly important role as values. An organic values-based supply chain links food production to values such as partnership, cooperation and trust. Within a values-based supply chain, all actors should be connected through a shared vision. Visions, indicators and parameters have been developed for the organic food system (OFS). In order to identify and leverage values within the OFS, it has to be critically analysed anddocumented. This makes the OFS a “living laboratory” for sustainable food systems, linking organic production and consumption within one system, thus creating and distributing value along the chains for sustainable food systems
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
The role of sustainable HORECA for sustainable lifestyles - identification of challenges and future work
Full text linkInternationally there is increasing interest in short food supply chains and local and organic food as part of a wider concern with sustainability. This is strongly evident in both commercially oriented food service, where it is often associated with sustainable tourism endeavours, and in institutional catering, often in connection with sustainable public procurement initiatives. Proponents stress environmental benefits as well as the health and nutritional value of high-quality organic food and re-localized food production and consumption, plus the opportunity for food education, especially in school meal settings. This paper looks at changing policies and practices against a background of risingdigitalization and the blurring between retail and food service channels. It will consider long-term strategies for developing sustainable HORECA, cooperation between procurers and smaller suppliers, and community involvement
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