1,721,764 research outputs found
Soils from the Patagonian Region
No full textThe Argentine Patagonia occupies the southernmost end of South America, and it is characterized by a strong environmental variation in the west?east direction. Two main sectors can be distinguished: the Andes Patagonian Cordillera (North, South Patagonian Cordillera and Fuegian and the Extra-Andean Patagonia, which extends eastward from the former. Landscape in western area is dominated by glaciar process (moraines and glaciofluvial plains) and also by volcanic action, with woodlands and udic?xeric regime. In the east, landscape is made largely by tablelands (fluvial, structural, lavic, glaciofluvial, etc.), shrub lands and aridic regime. Thefirst sector is mainly dominated by Andisols (Udands and Xerands), and Mollisols (Udolls, Criolls and Xerolls) and the second by Aridisols (Calcids and Argids) and Entisols (Ortents).This chapter describes the main characteristics of both sectors including geological, structural, climatic and edaphic aspect.Fil: Pereyra, Fernando Xavier. Universidad Nacional de Avellaneda; ArgentinaFil: Bouza, Pablo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Centro Nacional Patagónico. Instituto Patagónico para el Estudio de los Ecosistemas Continentales; Argentin
Carta geomorfológica 4172-II San Martín de los Andes: provincias del Neuquén y Río Negro
No full textFil: Pereyra, Fernando Xavier. Servicio Geológico Minero Argentino. Instituto de Geología y Recursos Minerales; Argentina.Carta geomorfológica 4172-II San Martín de los Andes, perteneciente a las provincias del Neuquén y Río Negro, realizado en escala 1:250.000, con proyección conforme Gauss-Krüger, sistema de referencia Posgar 07, equidistancia 250 metros. Cuenta con referencias de unidades geomorfológicas y referencias topográficas, incluye datos de planimetría, hidrografía y altimetría
COVID-19 in Ecuador, how the pandemic strained the surgical healthcare systems over the edge
No full textEcuador's response to the COVID-19 pandemic started on February 26, 2020, when the first case was detected in Guayaquil. Several mitigation measures were implemented at that time, including temperature monitoring, and checking for other COVID-19 related symptoms in travelers returning from high-risk countries. Yet, as the cases continued to rise, several policies were implemented to reduce the number of infections, following the example of other countries including Spain, Italy, France, and China. Activities deemed non-essential were suspended, school and universities were closed, and virtual platforms were encouraged to sustain academic activities, jobs, and medical care. Ecuador closed its land, air, and sea borders and several restrictions to vehicular and pedestrian traffic were implemented as part of a national lockdown. Nonetheless and despite these measures, the number of cases overrun the national health services. One ominous sign of this surge in infections was the eight-fold increment in expected fatalities during the first two weeks of April. Health care systems like our own and all over the world were not prepared for this disease, as we witnessed the human toll COVID-19 took in New York City, Madrid, and northern Italy. Due to our scarce resources and the high demand for medical attention in an already strained medical service, healthcare providers such as surgeons, anesthesiologists, urologists, and gynecologists had to assume the role of clinicians. Most of the surgical workforce was transferred and are still in COVID-19 care
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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