1,721,576 research outputs found
"Artes de amores" y tratados "De re uxoria" en el Renacimiento
No full textEn el Renacimiento, la cuestión del "amar" entre la mujer y el hombre recibe respuestas diversas. Las Artes de amores y los tratados Sobre la esposa son dos de los géneros discursivos más importantes al respeto. El presente trabajo procura, bajo uno u otro, agrupar e interpretar dos series distintas de textos producidos en la época.Fil: Ciordia, Martin Jose Raul. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Filología y Literatura Hispánica "Dr. Amado Alonso"; Argentin
Isidori Hispalensis Chronica. Cura et studio Martin (Jose Carlos)
No full textHamblenne Pierre. Isidori Hispalensis Chronica. Cura et studio Martin (Jose Carlos). In: Revue belge de philologie et d'histoire, tome 85, fasc. 1, 2007. Antiquité - Oudheid. pp. 172-180
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
Raceway system requirements for low-cost energy-efficient algal biomass cultivation
No full textThe overall aim of the research was to investigate the hydraulic mixing characteristics and energy efficiency of raceway systems for the large-scale cultivation of micro-algae. For this purpose, two pilot-scale raceway reactors (100 m length x 1 m wide channel), each with a paddlewheel for liquid circulation and a sump for gas exchange, were built and tested under different conditions. The optimal depth to run the raceway was 0.20 m. At this depth, a typical velocity for liquid circulation in raceways of 0.20 m s-1 was obtained with a power consumption of 2.10 W m-3, which was reduced to 1.6 W m-3 by using one baffle in the bend. At this velocity, addition of two and three baffles did not influence the power consumption significantly. The study of mixing as indicated by the Bodenstein number showed that mixing took place mainly in the paddlewheel, sump and bends although the overall behaviour of the system was plug flow since most of the liquid was contained in the channels.A study with and without a sump baffle showed that the maximum velocity achieved when it was in place was 37 % lower than without the baffle, while at the same time the power consumption increased by 79 %. In addition, its presence reduced mixing, while the improvement in mass transfer was very low. For all these reasons, a sump baffle with the studied configuration was not recommended unless its hydrodynamic performance can be significantly improved. The selection of a membrane plate diffuser giving a small bubble size and low pressure drop enhanced mass transfer efficiency. Oxygen was desorbed mainly in the sump and paddlewheel due to high turbulence which increased the mass transfer coefficient. Peaks in dissolved oxygen at midday, however, were identified as a major problem causing growth inhibition. Accumulation of oxygen in the culture can be reduced by gas bubbling in the sump, although in cultures with a high concentration of bicarbonates CO2 stripping may occur. CO2 mass transfers above 96 % were achieved in the raceway, highlighting the efficiency of the sump as a device for gas exchange. The use of flue gas was effective to control pH, provide carbon to the culture and reduce dissolved oxygen peaks. A carbon balance showed that outgassing in the raceway was almost negligible and main carbon loss was through the liquid phase in the harvesting process.Use of a hydrostatic pressure wheel for lifting water increased the hydraulic efficiency of the raceway between 15-20 %. The paddlewheel equipped with shoe used around 40-50 % of the energy required by flat configuration. This corresponds to an improvement of 2-5 times existing efficiencies, with higher values occurring at longer simulated channel lengths where the hydrostatic head losses are greater. This efficiency, however, is still well below theoretical values, and there is scope for further optimization the improved paddlewheel design for specific raceways
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
Tertullian against Caesar: monotheism and monarchy
Full text linkEl autor de este artículo lee el Apologeticum de Tertuliano como un texto de transición ideológica entre los primeros escritos mesiánicos del cristianismo y la teología política del siglo IV, i.e. una obra que fusiona teología imperial y cristianismo. Dejando de lado las disputas teológicas con el judaísmo, Tertuliano propone una discusión frontal con los romanos sobre la relación del concepto de divinidad con el poder político y quiere mostrar que la teología y la ética de los cristianos son mucho más apropiadas para una realidad como el Imperio romano que las que ha impuesto la tradición politeísta. En este razonamiento se destaca la correspondencia entre monoteísmo y monarquía universal.The author of this paper reads Apologeticum by Tertullian as a text of ideological transition between the early messianic Christian writings and political fourth century theology, i.e. a work that combines Imperial theology and Christianity. Leaving apart the theological disputes with Judaism, Tertullian proposes a frontal discussion with the Romans on the relationship of the concept of divinity with political power and wants to show that theology and Christian ethics are much more appropriate for a reality as Roman Empire which has imposed the polytheistic tradition. His argumentation stands out the reciprocation between monotheism and universal monarchy.Fil: Martin, Jose Pablo Maria. Universidad Nacional de General Sarmiento. Instituto del Desarrollo Humano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
- …
