1,721,005 research outputs found
An empirical study on consumer acceptance of farmed fish fed on insect meals : the Italian case
Full text linkAquaculture is assuming ever more importance in diminishing the pressure on wild stocks in the seas and to satisfy the demand of fish worldwide. Prices of feed used in farming fish are increasing, due to the rise in demand. Research on sustainable sources of feed was recently intensified, and insects as meal to substitute soybean and fish meals and fish oils seems a promising field. In particular, only very few papers have explored consumer interest in fish feed. The objective of this study is to explore the attitude and behavior of Northern-Italian consumers of farmed fish fed on insects considering the different phases of the purchasing process: from a general claim to interest in sustainability about the use of marine resources to the attitude in to eating finfish products if fed on insect meals and finally to the decision to purchase. In particular, the study utilizes a quantitative research methodology to explore factors affecting the gap between consumer intention and consumer behavior. Results indicate almost 90 % of consumers have a positive attitude to insect meal as feed and most of the respondents intend to purchase and eat farmed fish even though fed with insect meals. Moreover, interest is mainly affected by socioeconomic variables, knowledge of the issue and the interest attributed to origin and certification. Positive attitude is mainly influenced by interest in this issue and variables linked to appearance and price, whereas the willingness to buy fish fed on insect meals is closely linked to the importance of price and expected price for this kind of fish
Review on the use of insects in the diet of farmed fish: Past and future
Full text linkThe decrease in the availability and the increase in the prices of fishmeal and fishoil have prompted the search for sustainable alternatives for aquaculture feeds. Insects, which are part of the natural diet of fish, leave a small ecological footprint and have a limited need for arable land, may represent a good candidate. Over the last decade, studies of the replacement of fishmeal with insects in the diet of fish have emerged and the promising results have encouraged further research. The present review displays these results in tables and emphasizes the achievable dietary inclusion levels. It discusses the potential of locusts,
grasshoppers, termites, yellow mealworms, Asiatic rhinoceros beetles, superworms, domesticated silkworms, common houseflies, common mosquitoes and black
soldier flies for use as fishmeal and/or fishoil replacement in the fish diet. The review succinctly compares the composition of the insects with the requirements of the fish (proteins and aminoacids, lipids and fattyacids, vitamins and minerals). This review also discusses the potential hurdles of using insects in fish feeds (toxicity of insects through bioaccumulation, deficiencies in aminoacids or fattyacids, chitin content, palatability, digestibility), and the available ways
of avoiding these drawbacks (control of the dietary substrate of insects in mass rearing units, manipulation of the diet of insects, mixture of dietary proteins, use
of aquatic insects, processing of insect meal). Finally, it suggests paths worthy of future research on these new fishmeal alternatives
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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