1,721,335 research outputs found
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
Mejora de la sustentabilidad de los bosques: tres carriles para una sola ruta
Full text linkDurante muchos años los planteos técnicos de manejo de los ñirantales se focalizaron en el estrato forestal no considerando o excluyendo la ganadería, lo que nunca fue aceptado por los pobladores ni fue llevado efectivamente a la práctica. De esta manera se generó una tensión entre las propuestas de los organismos de fiscalización y científicos, los saberes tradicionales y la realidad,
situación que aún no está suficientemente saldada. Sin embargo, en los últimos años, se ha empezado a incorporar el criterio de Manejo de Bosque con Ganadería Integrada (MBGI), permitiendo una visión más integral y realista de la problemática, y de esta manera, se han empezado a desarrollar herramientas técnicas como la determinación de receptividad ganadera o pautas de raleo en estos sistemas enmarcadas en buenas practicas silvopastoriles promoviendo tanto el desarrollo socio-productivo como la
sustentabilidad ambiental.EEA EsquelFil: Bottaro, Hugo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; ArgentinaFil: von Müller, Axel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; Argentin
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
Lattice-preferred orientations of late-Variscan granitoids derived from neutron diffraction data: implications for magma emplacement mechanisms
Full text linkThe lattice-preferred orientation (LPOs) of two late-Variscan granitoids, the Meissen monzonite and the Podlesí dyke granite, were determined from high-resolution time-of-flight neutron diffraction patterns gained at the diffractometer SKAT in Dubna, Russia. The results demonstrate that the method is suitable for the LPO analysis of polyphase, relatively coarse-grained (0.1–6 mm) rocks. The Meissen monzonite has a prominent shape-preferred orientation (SPO) of the non-equidimensional minerals feldspar, mica and amphibole, whereas SPO of the Podlesí granite is unapparent at the hand-specimen scale. The neutron diffraction data revealed distinct LPOs in both granitoids. The LPO of the non-equidimensional minerals feldspar, mica and amphibole developed mainly during magmatic flow. In the case of the Meissen monzonite, the magmatic flow was superimposed by regional shear tectonics, which, however, had no significant effect on the LPOs. In both samples, quartz shows a weak but distinct LPO, which is atypical for plastic deformation and different in the syn-kinematic Meissen monzonite and the post-kinematic Podlesí granite. We suggest that, first of all, the quartz LPO of the Meissen monzonite is the result of oriented growth in an anisotropic stress field. The quartz LPO of the Podlesí granite, which more or less resembles a deformational LPO in the flattening field of the local strain field, developed during magmatic flow, whereby the rhombohedral faces of the quartz crystals adhered to the (010) faces of aligned albite and to the (001) faces of zinnwaldite. Due to shape anisotropy of their attachments, the quartz crystals were passively aligned by magmatic flow. Thus, magmatic flow and oriented crystal growth are the major LPO-forming processes in both granitoids. For the Meissen monzonite, the solid-state flow was too weak to cause significant crystallographic re-orientation of the minerals aligned by magmatic flow. Finally, the significance of our results for the evaluation of the regional tectonic environment during magma emplacement is discussed. The discussion on the regional implications of the more methodologically oriented results provides the basis for future, more regionally aimed studies in view of the fabric characteristics of such plutons and their developing mechanisms
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
Supplementary dataset to "Linking spatiotemporal and demographic patterns in modulating local population outbreak of invasive forest insect" [Conjunto de datos]
No full textSe incluyen los datos de un estudio de campo realizado en una plantación de pinos de 223 hectáreas durante un evento de brote local de la avispa de la madera Sirex noctilio. El objetivo fue evaluar la estructura espacial y demográfica del brote mediante el análisis combinado de patrones de ataque, comportamiento de oviposición y desempeño de los adultos emergentes. Se relevaron niveles de infestación a escala de parcela y se caracterizaron diferencias entre árboles muestreados en el epicentro del brote y en su periferia. Las variables incluyen proporción de árboles infestados, intensidad de oviposición, número de adultos emergentes, ancho del tórax como indicador de tamaño corporal y estimaciones de parasitismo natural. Estos datos permiten explorar mecanismos espaciales y demográficos en la dinámica de brotes de insectos forestales invasores.EEA BarilocheFil: Villacide, José. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche ( IFAB). Grupo de Ecología de Poblaciones de Insectos; ArgentinaFil: Villacide, José. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche ( IFAB). Grupo de Ecología de Poblaciones de Insectos; Argentina; ArgentinaFil: Liebhold, Andrew. Forest Service Northern Research Station. Northern Research Station, Morgantown; Estados UnidosFil: Von Müller, Axel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agroforestal Esquel; ArgentinaFil: Von Müller, Axel. Universidad Nacional de la Patagonia San Juan Bosco. Facultad de Ingeniería, Chubut; ArgentinaFil: Behr, Santiago Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Chubut. Grupo de Pastizales Naturales; Argentina.Fil: Corley, Juan Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Bariloche. Instituto de Investigaciones Forestales y Agropecuarias Bariloche ( IFAB). Grupo de Ecología de Poblaciones de Insectos; ArgentinaFil: Corley, Juan Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones Forestales y Agropecuarias Bariloche ( IFAB). Grupo de Ecología de Poblaciones de Insectos; Argentina; ArgentinaFil: Corley, Juan Carlos. Universidad Nacional del Comahue. Centro Regional Universitario Bariloche. Departamento de Ecología; Argentin
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