1,720,956 research outputs found
SISTEMA DI RILEVAMENTO E DI ALLERTA DEL PARTO INCIPIENTE NEGLI ANIMALI DOMESTICI E DI ALLEVAMENTO
No full textEvaluation of remote monitoring of parturition in dairy cattle as a new tool for calving management
No full textBackground: Proper calving management of dairy herds is a crucial aspect of the bovine life cycle, as it has
profound effects on calf viability and on the post-partum course of the dam. The objectives of this study were to
monitor the calving process through the use of a remote alarm system and to determine the impact of prompt
emergency obstetric procedures in case of dystocia for the prevention of stillbirths and post-partum reproductive
pathologies, and for improving herd fertility. Six groups of experimental animals were studied: monitored
heifers (n = 60) and multiparous cows (n = 60) were compared with non-observed animals (n = 60 heifers and
n = 60 multiparous) giving birth during the same time period and housed in the calving barn, and with
unmonitored animals placed in a dry zone (n = 240 heifers and n = 112 multiparous cows).
Results: The incidence of dystocia ranged from a minimum of 23.4% (monitored multiparous cows) to a
maximum of 33.3% (monitored heifers), and there were no differences compared with control groups.
However, the rate of stillbirth was higher in control groups than in the monitored groups (P < 0.01). Among
both heifers and multiparous cows, the incidence of post-partum uterine infections was higher in the
unmonitored animals both in the calving barn (P < 0.01) and in the dry zone (P < 0.05) compared with
monitored animals. Among both heifers and multiparous cows, the control groups showed higher rates of
foetal membrane retention than did the monitored groups (P < 0.001). The calving-to-conception interval was
shorter; in particular, observed heifers showed a significant advantage of approximately 46 days compared
with the unmonitored group (P < 0.001) and 32 days compared with the group in the calving barn (P < 0.05).
Multiparous cows also had a reduction in the number of days open.
Conclusions: The remote alarm system used to monitor the calving process assured the prompt presence of
personnel, improving both the cow’s reproductive efficiency and neonatal viability
Sistema di rilevamento e di allerta del parto incipiente negli animali domestici e di allevamento.
No full textIn view of the shortcomings of the prior art, it is an object of the present invention to provide an improved system and method for predicting the onset of parturition in a mammalian female.
It is a further object of the present invention to provide an improved system and method for detecting the onset of parturition in a female. It is a further object of the present invention to provide an improved system and method for determining the attainment of fetal readiness for parturition in a mammalian female. It is a further object of the present invention to provide an improved system and method for determining the occurrence of fetal stress syndrome in a mammalian female. It is a still further object of the present invention to provide a system and method for predicting the onset of parturition, and determining the occurrences of fetal readiness, the onset of parturition, and fetal stress syndrome, that can be adapted for a number of families of mammalian females with minor modifications and are accurate, reliable, safe, convenient and economical. Our intravaginal device is a: 1) Warning device for the detection of delivery in domestic animals and livestock, able to detect many scientific parameters of the whole delivery phase and, immediately, to signal the event to operators through several transmission techniques, with data examined on screen and elaborated by software, characterized by a biocompatible probe to insert at the back of the vaginal canal of the female in proximity of the delivery. This probe is expulsed by the vagina during the second stage of labour, when foetal annexes and foetus’ body cross the vaginal canal. The unit is composed by two stackable pieces: a base and a cylindrical bin. The base is useful to maintain the device inside the vagina, while the bin contains one or more sensors and one transmitter (at least) able to transmit scientific parameters and to signal when the device is out of the animal’s body.2) Warning device for the detection of delivery in domestic animals and livestock, according to the first claim, characterized by a probe, containing one or more physical sensors and the transmitter, that is inserted inside the vaginal canal with the transmitting + sensory unit inside the bin oriented toward the external cervical orifice, while the base or supporting anchor is toward the vulva. 3) Warning device for the detection of delivery in domestic animals and livestock, according to the first claim, characterized by a probe and the transmitting + sensory unit inside the bin, of several dimensions that can be modified depending on animal species
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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