1,720,962 research outputs found
Etnobotánica de las palmas en las tierras bajas del Pacífico colombiano, con énfasis en la palma cabecinegro (Manicaria saccifera Gaertn)
Get PDFEl presente estudio tuvo dos componentes principales: 1. La consolidación de la información existente sobre el uso y manejo de las Palmas en las tierras bajas del Pacífico de Colombia, reuniendo citas, incluyendo la literatura primaria, secundaria y gris, y la información de los herbarios. Con los resultados se identificaron los vacíos de información y se sugieren temas para futuras investigaciones en el área. 2. Documentar los usos de la fibra y la cadena de comercialización de productos derivados de Manicaria saccifera, una de las palmas más utilizadas en las tierras bajas del Pacífico. Esta especie es una palma de gran tamaño, que forma rodales grandes casi homogéneos en el sotobosque de las llanuras aluviales de las tierras bajas del Pacífico de Colombia. En la región central del Chocó esta palma constituye un recurso útil para la población nativa, principalmente afrodescendientes e indígenas Embera, que utilizan la bráctea peduncular para producir una variedad de artesanías. Los usos y la información económica se obtuvieron a través de trabajo de campo directo y entrevistas estructuradas y semiestructuradas, que abarcaron todo el proceso desde la extracción hasta la transformación y comercialización. Los resultados muestran que si bien el efecto de la cosecha no es tan dramático, pues las diferencias entre estructura de las poblaciones cosechadas y no cosechadas es muy poca, si se evidencia definitivamente un efecto leve a nivel de reclutamiento y de la regeneración, que puede ser un indicativo de que esta práctica está afectando la capacidad reproductiva de la palma. / Abstract. The present study has two main components: 1. Compilation of the existing information about the use and management of palms in the Pacific lowlands of Colombia by gathering citations, including primary, secondary, and gray literature, and information from herbaria. With the result we will try to identify information gaps and to suggest topics for future research in the area. 2. To document the uses of fiber and the market chain of products derived from Manicaria saccifera, one of the most used palms in the Pacific lowlands. Manicaria saccifera is a large palm that forms large and almost homogeneous stands in the forest understory of alluvial flood plains in the Pacific lowlands of Colombia. In the central Chocó region, this palm constitutes a useful resource for the native population, mainly afrodescendants and Embera Indians, who use the peduncular bract to produce a wide array of handicrafts. Uses and economic information were obtained through direct fieldwork and structured and semistructured interviews, covering the whole process from extraction to transformation and marketing. The results will be used to make recommendation on its management. The results show that although the effect of harvest is not severe, since the differences in structure of harvested and unharvested populations is very little, there is a slight effect at the level of recruitment and regeneration, which may be indicative that this practice is affecting the reproductive capacity of the palm.Maestrí
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
USOS DE LAS PALMAS EN LAS TIERRAS BAJAS DEL PACÍFICO COLOMBIANO
Get PDFCon el fin de evaluar el conocimiento sobre usos de las palmas en el Pacífico colombiano, para orientar las investigaciones futuras y para definir patrones generales de uso en la región, estudiamos las fuentes de información que documentan usos en esta región. Se registraron 90 tipos de usos en 52 especies de palmas útiles en el Pacífico, que equivalen al 61 % de las palmas que crecen en la región. Los usos se agruparon en ocho categorías de uso y 30 subcategorías; las categorías de uso más importantes fueron construcción, utensilios y herramientas, y alimentación humana. Las especies que registraron mayor número de usos fueron Bactris gasipaes, Astrocaryum standleyanum, Oenocarpus bataua, Euterpe oleracea, Oenocarpus minor, Cocos nucifera, Attalea cuatrecasana, Iriartea deltoidea, Desmoncus cirrhifer y Wettinia quinaria
Efectos de las actividades socio-económicas (minería y explotación maderera) sobre los bosques del departamento del Chocó
Get PDFDispelling 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
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