1,720,966 research outputs found
Effect of organic fertilization treatments on grasspea (Latyrus sativus L.)
No full textA better knowledge of important relationships between soil and crop production is necessary to develop sustainable agricultural systems. It is often stated that only a few staple crops produce the majority of the food supply. This might be correct but the important contribution of many minor species should not be underestimated.
Legumes have always been used as a source of nutrient-rich organic matter and nitrogen for crops. The grass pea (Lathyrus sativus L.) is a food, feed and fodder crop belonging to the family Leguminosae . This crop has over the past decade received increased interest due to its adaptability to arid conditions and contains high levels of protein, a component that is increasingly becoming hard to acquire in many developing areas.
In Italy, after a drastic decline in the last 50 years, there is great potential for an expansion in the utilization of grass pea in the sustainable crop systems of the marginal areas of southern Italy. The diffusion of grass pea cropping is subject to the evaluation of the potential grain yield in the semi arid areas of south Italy.
The objectives of this study were to investigate the impact of different organic fertilization treatments on quantity and quality traits of grain and the effects of crop-residue application on yields in a grass pea-durum wheat rotation system. The results show that the grass pea has not been able to take advantage from high fertilizer input. Good yield performance was obtained from cultivar Gecon 15 in the studied crop rotation system
Durum wheat growth analysis in a semiarid environment in relation to crop rotation and nitrogen rate
Full text linkSUMMARY – A research on durum wheat growth analysis was carried out at Sparacia farm (37°37’N-13°42’E) during
the 2000-2001 and 2001-2002 seasons in a typical semi-arid environment. The objective of this research was to
determine the effects of crop rotation (continuous wheat and wheat-pea rotation) and N fertilizer rates (0, 60 and 120
Kg ha-1) on growth of four durum wheat varieties, characterized by different productive ability and adaptation. A split-
split-plot design with three replications was used. The study highlighted the role of the CGR index in order to enable
a better knowledge of the relationship among crop techniques and wheat yield respons
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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