1,721,076 research outputs found
Efectos no genéticos sobre caracteres de crecimiento predestete en ovinos de pelo criollo colombiano
No full textObjective. Determine the effect of some variation factors that affect the characteristics of birth weight (BW), adjusted weaning weight (AWW) at 90 days and pre-weaning weight gain (PWW) in Colombian hair sheep. Materials and methods. 525 data from Colombian hair sheep (OPC) offspring, reared in an extensive production system under conditions of the lower Colombian tropics were used. A linear fixed effects model (GLM) was used, which included the sex of the calf, the type of calving (single or multiple), the calving number of the ewe (primiparous or multiparous), the climatic season of birth (dry or rainy) and the year of birth (2017 to 2020) and their interactions. The analyzes were carried out with the statistical package SAS University, 2021®. Results. The BW, AWW and PWW values were 2.9±0.1 Kg, 13.2±1.6 Kg and 0.15±0.064 Kg, respectively. The BW was significantly affected (p <0.05) by all the factors studied. So then, the males, the offspring of simple delivery, of first-time ewes, in the rainy weather season and in 2019 had better performance. The AWW only varied significantly due to the effects of calving number, the climatic season and the year. Finally, the PWW was only affected by the rainy weather season and by the year. Conclusions. The BW turned out to be the variable most sensitive to the factors analyzed. In maternal effects, the type of delivery did not affect the AWW and PWW, while the number of deliveries affected the AWW but not the PWW.Objetivo. Determinar el efecto de algunos factores de variación sobre las características peso al nacimiento (PN), peso al destete ajustado (PDA) a los 90 días y la ganancia de peso predestete (GPP) en ovinos de pelo colombiano (OPC). Materiales y métodos. Se utilizaron 525 datos de crías de OPC, manejados en un sistema extensivo de producción, en condiciones del trópico bajo colombiano. Fue utilizado un modelo lineal de efectos fijos, que incluyó, el sexo de la cría, el tipo de parto (sencillo o múltiple), el número de parto de la oveja (primípara o multípara), la época climática de nacimiento (seca o lluviosa) y el año de nacimiento (2017 al 2020) y sus interacciones. Los análisis se realizaron con el paquete estadístico SAS University, 2021®. Resultados. Los valores de PN, PDA y GPP fueron 2.9±0.1 Kg, 13.2±1.6 Kg y 0.15±0.064 Kg, respectivamente. El PN fue afectado significativamente (p< 0.05) por todos los factores estudiados. Las crías macho, las de parto simple, las de parto primerizo, las nacidas en época lluviosa y en particular las nacidas en el año 2019, tuvieron mejor desempeño. El PDA, solo varío significativamente por los efectos número de parto, época climática y año. La GPP solo se afectó por la época lluviosa y por el año. Conclusiones. El PN resultó ser la variable más sensible a los factores analizados. El tipo de parto no afecto el PDA y la GPP. El número de parto afectó al PDA pero no al GPP.
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Get PDFWe 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
Alfabetización digital: uso de las TIC's más allá de una formación instrumental y una buena infraestructura
Get PDFTraditionally, the concept of digital literacy has been basically circumscribed to providing ICT�s (Information and communication and technology) infrastructure and internet access to the higher education institutions. This vision has prevented a more holistic conception in regards with the role which play the ICT�s literacy in the teaching and learning processes and in the society as well. This article has as a main purpose to present a research and theoretical overview which allow us to understand the digital literacy dimensions, the technological gap between students and professors, and the curricular and pedagogical implications that bring about meaningful changes in the traditional teaching models that pervade a great number of Universities.Tradicionalmente, el concepto de alfabetización digital se ha circunscrito básicamente en infraestructura y accesibilidad de las TIC�s (tecnologías de la información y la comunicaciones) y el internet a las instituciones educativas de educación superior. Esta visión ha impedido tener una concepción más holística con respecto al papel que juegan la alfabetización digital tanto en los procesos de enseña y aprendizaje como en la sociedad. Este artículo tiene como propósito presentar una revisión investigativa y teórica que permita comprender las dimensiones de la alfabetización digital, la brecha existente entre estudiante y profesores, y algunas implicaciones curriculares y pedagógicas que implican generar cambios significativos en las prácticas pedagógicas tradicionales aún preponderantes en muchas Universidades
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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