1,720,957 research outputs found
Conocimiento, percepción social y actitudes hacia la avifauna del Balneario El Cóndor (Río Negro). Aportes a la Educación Ambiental orientada a la conservación de la biodiversidad y la sustentabilidad.
No full textFil: Asaroff, Pablo. Centro de Altos Estudios en Ciencias Exactas; Argentina.Fil: Asaroff, Pablo. Universidad Metropolitana para la Educación y el Trabajo; Argentina.Fil: Asaroff, Pablo. Universidad de Buenos Aires. Ciclo Básico Común; Argentina.Fil: Asaroff, Pablo. Instituto de Formación Técnica Superior Nº 22; Argentina.En los últimos tiempos se ha demostrado la importancia de considerar la dimensión social de la conservación de la biodiversidad. En este sentido, el conocimiento y la percepción social son aspectos fundamentales a tener en cuenta para la elaboración de planes de manejo y estrategias de conservación. Por otro lado, estos aspectos determinan actitudes de las personas hacia los organismos, que pueden ser positivas o negativas hacia los mismos. Las aves son un grupo de particular importancia, por los servicios ecosistémicos que aportan y por su gran importancia cultural. En el presente trabajo se aborda el estudio del conocimiento, percepción social y actitudes hacia la avifauna del Balneario El Cóndor, con el objetivo de generar conocimientos que sirvan de base para la elaboración de planes de Educación Ambiental que aporten a la conservación de la avifauna y a la sustentabilidad local
FIGURES 13–22. Triplectides gracilis larva. 13 in Preimaginal stages of Triplectides misionensis Holzenthal and Triplectides gracilis (Burmeister) (Trichoptera: Leptoceridae: Triplectidinae), with notes on the cases occupied by these species
Full text linkFIGURES 13–22. Triplectides gracilis larva. 13, head, dorsal; 14, head, ventral; 15, thorax, dorsal; 16, pronotum, left lateral; 17, thorax, ventral; 18–20, left fore-, mid- and hind legs, posterior; 21, habitus, left lateral; 22, segment IX and anal prolegs, dorsal.Published as part of Sganga, Julieta V., Angrisano, Elisa B. & Asaroff, Pablo E., 2013, Zootaxa 3616 (1), DOI: 10.11646/zootaxa.3616.1.2, http://zenodo.org/record/21949
Evidence of the effect of adulticides on Aedes aegypti (Culicidae) sensors on public paved areas
Full text linkAedes aegypti es un mosquito de ambiente urbano de gran importancia sanitaria. Dado esto es relevante estimar su densidad poblacional en zonas urbanas, así como también monitorear su presencia para posteriormente tomar medidas de control especialmente eliminando de criaderos o potenciales criaderos de este mosquito, fundamentalmente en las viviendas. La estimación de la abundancia es comúnmente realizada a partir de los estados inmaduros y los monitoreos, generalmente de frecuencia semanal, con sensores de oviposición. Mientras se realizaban en verano dos estudios simultáneos sobre A. aegypti en una ciudad de Entre Ríos, Argentina, el municipio realizó un control químico sobre mosquitos adultos silvestres (que habían invadido la ciudad) en las calles de la ciudad. Esto permitió analizar las consecuencias de la aplicación de insecticida sobre los dos métodos para detección de este mosquito. Uno estudio se realizó sobre los criaderos de A. aegypti y el otro con dos tipos de sensores (clásicos y adhesivas cebadas), mientras que el primero permitió la estimación de indicadores de su abundancia, dando valores considerables para la ciudad, el otro prácticamente no registró la presencia de A. aegypti Esta discrepancia indicaría que la aplicación de los adulticidas en la vía pública al eliminar los adultos de A. aegypti que pudieran estar en las veredas no permitió detectar su presencia, cuando en realidad las abundancias en la ciudad eran considerable. Los monitoreos con los sensores mencionados que proveen relevante información espacial y temporal de la presencia del vector pueden ser interferidos por controles químicos que tienen otro foco, produciendo resultados erróneos.Aedes aegypti is an urban mosquito of great health importance. For this reason, it is relevant to estimate its population density in urban areas, as well as to monitor its presence to subsequently take control measures, especially eliminating breeding sites or potential breeding sites for this mosquito, mainly in dwellings. Abundance estimation is commonly made from immature stages and monitoring, generally weekly, is done with oviposition sensors. While two simultaneous studies on A. aegypti were being carried out in a city in Entre Ríos province, Argentina, in the summer, the municipality carried out a chemical control on wild adult mosquitoes (which had invaded the city) in the city streets. This allowed us to analyze the consequences of the insecticide application on the two methods for detecting this mosquito. One study was carried out on A. aegypti breeding sites and the other with two types of sensors (classical and stickytrap), while the first allowed the estimation of indicators of their abundance, giving considerable values for the city, the other, practically did not. recorded the presence of A. aegypti This discrepancy would indicate that the application of adulticides on public paved areas by eliminating A. aegypti adults that could be on the sidewalks did not allow to detect their presence, when in fact the abundances in the city were considerable. Monitoring with the aforementioned sensors that provide relevant spatial and temporal information on the presence of the vector can be interfered with by chemical controls that have another focus, producing erroneous results.Fil: Burroni, Nora Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Ecología, Genética y Evolución de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Ecología, Genética y Evolución de Buenos Aires; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Ecología, Genética y Evolución; ArgentinaFil: Asaroff, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Ciclo Basico Comun. Departamento de Cs Biologicas; Argentina. Universidad Metropolitana para la Educación y el Trabajo; Argentin
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
Differential impact of marine debris ingestion during ontogenetic dietary shift of green turtles in Uruguayan waters
Full text linkAnthropogenic debris ingestion has been reported for green turtles in all their life stages worldwide. The aim of the present study is to evaluate the marine debris ingestion by green turtles stranded in Uruguayan coast between 2005 and 2013. Debris items were categorized and quantified by frequency of occurrence, relative weight, volume and number of items. A total of 96 dead stranded turtles were analyzed and 70% presented debris in their guts. The majority of debris found were plastic, being hard plastics the most abundant in weight. We found no differences in debris ingestion in stranded turtles a long the Uruguayan coast. However we detected a negative correlation between the presence of debris and turtle's size. Smaller turtles are new recruits to neritic grounds indicating that the early juvenile stage of this species is the most vulnerable to this threat in the Southwestern Atlantic.Fil: Vélez Rubio, G. M.. Universidad de Valencia; EspañaFil: Teryda, N.. Universidad de Valencia; EspañaFil: Asaroff, Pablo. Universidad Favaloro. Facultad de Ingeniería y Ciencias Exactas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”; ArgentinaFil: Estrades, A.. Karumbé; UruguayFil: Rodriguez, Diego Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; ArgentinaFil: Tomás, J.. Universidad de Valencia; Españ
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
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