1,720,954 research outputs found
A machine prototype for the chestnut mechanical harvest in steep zone
No full textA machine able to perform the mechanical harvest of the chestnuts in the steep zones has been designed and realized. With the aid of a specific software it has been possible to perform a simulation of the different runs planning soil slopes higher than 35%, on spaces with maximum width of 80 cm and backs high 30 cm. Subsequently with the aid of the software Solidworks has been drawn the model in 3D to verify the compatibility of the dimensions of the considered
machinery with the hypothesized spaces. The vehicle is composed of a tracked wagon surmounted by the aspirator and by the whole equipment of harvest. For such machine, once it has started, the operator can manage all the functions necessary to perform the chestnut mechanical harvest by
remote, simply maneuvering by remote control. In such way it is avoided that the operator has to climb on steep slant, to perform manual chestnut harvest; all of this to advantage of the operator safety. The first harvest tests have been performed in only one passage, and they have been aimed to evaluate the functional and operational characteristics, related to the surface of an
hectare. The tests of the machine prototype have been conducted with a speed of 1,8 km/h, with a soil moisture of 12%. Under these conditions, the working operational capacity of the considered machine has been satisfying, thanks also to the low incidence of the times accessories of turning on the total time. In conclusion with the use of such machine the harvest is performed in the full
respect of the safeguard of the operators safety, and considerably guarantees to the farmer an optimization of the harvest operations with times and costs considerably reduced. Further researches and studies are necessary to optimize this machine for different soil and operative conditions
A machine prototype for the chestnut mechanical harvest in steep zone
No full textA machine able to perform the mechanical harvest of the chestnuts in the steep zones has been
designed and realized. With the aid of a specific software it has been possible to perform a
simulation of the different runs planning soil slopes higher than 35%, on spaces with maximum
width of 80 cm and backs high 30 cm. Subsequently with the aid of the software Solidworks has
been drawn the model in 3D to verify the compatibility of the dimensions of the considered
machinery with the hypothesized spaces. The vehicle is composed of a tracked wagon surmounted
by the aspirator and by the whole equipment of harvest. For such machine, once it has started, the
operator can manage all the functions necessary to perform the chestnut mechanical harvest by
remote, simply maneuvering by remote control. In such way it is avoided that the operator has to
climb on steep slant, to perform manual chestnut harvest; all of this to advantage of the operator
safety. The first harvest tests have been performed in only one passage, and they have been
aimed to evaluate the functional and operational characteristics, related to the surface of an
hectare. The tests of the machine prototype have been conducted with a speed of 1,8 km/h, with a
soil moisture of 12%. Under these conditions, the working operational capacity of the considered
machine has been satisfying, thanks also to the low incidence of the times accessories of turning
on the total time. In conclusion with the use of such machine the harvest is performed in the full
respect of the safeguard of the operators safety, and considerably guarantees to the farmer an
optimization of the harvest operations with times and costs considerably reduced. Further
researches and studies are necessary to optimize this machine for different soil and operative
conditions
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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