1,721,049 research outputs found
Expansivo y marginal: Marcelo Pombo en Fortabat
Full text linkFil: Kodolbsky, Daniela. Universidad Nacional de las Artes. Área Transdepartamental de Crítica de Artes. Instituto de Investigación y Experimentación en Arte y Crítica; ArgentinaFil: Feldman, Jonathan. Universidad Nacional de las Artes. Área Transdepartamental de Crítica de Artes. Instituto de Investigación y Experimentación en Arte y Crítica; ArgentinaFil: Feldman, Jonathan. Universidad Nacional de Tres de Febrero. Instituto de Investigación en Arte y Cultura “Dr. Norberto Griffa”; ArgentinaFil: Koldobsky, Daniela. Universidad Nacional de La Plata. Facultad de Bellas Artes. Instituto de Historia del Arte Argentino y American
La inserción de lo contemporáneo. El programa «Espacio Contemporáneo» de Fundación PROA. Buenos Aires, 2008-201
Full text linkEste artículo analiza el programa Espacio Contemporáneo, de Fundación PROA (Buenos Aires) desde la perspectiva de su relación y su rol en la conformación de la escena del arte contemporáneo porteño. El programa se inició en 2008 y fue mutando su funcionamiento y objetivos hasta su cierre en 2018. Se estudiarán sus vínculos con la escena artística local, al igual que sus efectos sobre el barrio de La Boca y la propia definición de arte contemporáneo. El enfoque de análisis combinará aspectos de los Estudios Visuales (Mitchell 2005; Moxey 2009), y algunas reflexiones en torno al rol político del arte (Rancière 2009), entendiendo al programa de PROA como un modo de construcción de una imagen de contemporaneidad. Esta inserción de lo contemporáneo asume que la curaduría y el programa de exhibiciones presentado por una institución son un mapa para entender su misión, su identidad y su campo de acción
Phytoecdysteroids: understanding their anabolic activity
No full textPhytoecdysteroids, polyhydroxylated ketosteroids, are the plant analogues of insect growth hormones. Although their role in insect molting is well characterized, their function in plants is less clear. Lacking the properties of classic plant hormones, phytoecdysteroids may be involved in plant growth and defense. One of the main benefits of phytoecdysteroids may be their therapeutic effects on mammals, including humans. Their claimed medicinal properties include anabolic, adaptogenic, hepatoprotective, and hypoglycemic activity. Although ethnobotanical use has been supported by some evidence, the research is quite limited, lacking the scientific rigor necessary to be convincing.
Two ecdysteroid containing plants, Ajuga turkestanica, and Spinacia olearaceae (Spinach), were selected as beneficial sources of phytoecdysteroids. Cultivation, analysis of ecdysteroid content, and characterization of anabolic activity were performed to support future medicinal use.
Phytoecdysteroids' anabolic activity, one of their most interesting properties due to the claimed lack of androgenic effect, was studied. Anabolic activity was confirmed in animal studies and a cellular model of skeletal muscle. The cellular model was used to characterize ecdysteroids' effect on protein incorporation and to elucidate the signal transduction pathway involved. Ecdysteroid's lack of androgenic activity was confirmed in vivo and in vitro, with ecdysteroids showing no specific binding to the androgen receptor.
Identification of mammalian nuclear receptors homologous with the insect nuclear ecdysone receptor led to binding and activation assays of potential receptors using ecdysteroids. The discovery of a lesser known membrane bound G Protein Coupled Receptor (GPCR) insect ecdysone receptor, DoEcR, suggested the existence of a hypothetical mammalian membrane bound GPCR ecdysone receptor.
Use of specific inhibitors supported the involvement of G protein signaling, Phospholipase C (PLC), Inositol Phosphate 3 Receptor (IP3R), and Akt. Ecdysteroid stimulated activation of Akt confirmed its role in the anabolic effect. Ecdysteroid generated increases in intracellular calcium were also characterized, with the rapid flux in Ca2+ linked with Akt activation and anabolic activity. The evidence produced suggests the involvement of a putative mammalian GPCR ecdysteroid receptor mediating the anabolic effect through the rapid activation of the PLC/IP3R pathway, generating Ca2+ flux which leads to activation of the Phosphoinositide 3 Kinase/Akt pathway, eventually causing increases in protein incorporation.Ph.D.Includes bibliographical references (p. 131-142)by Jonathan Isaac Gorelick-Feldma
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
How to show the immaterial: The case of the exhibition Arde! Arte de acción colectiva a 10 años del 19 y 20"
Full text linkEl presente trabajo analizará la exhibición Arde! Arte de acción colectiva a 10 años del 19 y 20, realizada en el Centro Cultural de la Cooperación Florean Gorrini en 2011. La muestra presentó algunas de las acciones del colectivo Arde! Arte, que funcionó desde 2001 hasta 2006. Se pretende acercarse a la problemática de cómo mostrar producciones de carácter inmaterial, a partir de estudiar las estrategias utilizadas en la muestra. Se describirá el período en el cual se desarrollaron las obras –desde el Argentinazo en 2001 hasta la disolución del colectivo en 2006– y se detallará la espacialidad de la exhibición para reflexionar respecto de sus modos de exponer lo inmaterial. Se utilizará una metodología interdisciplinar: la filosofía y la historia del arte se utilizarán para analizar la cuestión de la relación entre arte y política y el desarrollo artístico en el espacio público; la historia, la sociología y la economía servirán para describir el contexto de la crisis de 2001. Los estudios curatoriales y la teoría del arte presentarán algunas características del colectivo y de la exhibición; y los estudios visuales permitirán encontrar pautas que habiliten hablar de la exhibición como organismos vivos, generadores de vivencias y de conocimiento.This paper analizes the exhibition Arde! Arte de acción colectiva a 10 años del 19 y 20, which took place at the Cultural Center for Cooperation Florean Gorrini (Buenos Aires, 2011, institutional curatorship). The show presented some of the actions of the group Arde! Arte, and it is its aim to approach the problematics of exhibiting immaterial productions through the study of the strategies used in this show. The essay employs an interdisciplinary methodology: philosophy and art history are used to analyze the relationships between art and politics, as well as the artistic development in public spaces; history, sociology and economy are useful to describe the context of the 2001 crisis. Curatorial studies and theory of art present some characteristics of the group, including its origins, their forms of production — mostly developed in public spaces—, its bonds with organizations of unemployed workers and “piqueteros”, human rights organizations and other art groups that made the serious social conflicts of the period, and their place within Argentinian artistic activism visible. Finally, visual studies will enable the speaking of exhibitions as living organisms, generators of experiences and knowledge.Fil: Feldman, Jonathan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Tres de Febrero. Instituto de Investigaciones en Arte y Cultura "Dr. Norberto Griffa"; Argentina. Universidad Nacional de Las Artes. Instituto de Investigación y Experimentación En Arte y Critica; Argentin
Artistic collectives and a look on the crisis of 2001: the case of Arde! Arte, 2001-2006
Full text linkHacia finales de la década del noventa, la Argentina se encontraba en una situación socio-económica crítica, resultado de la aplicación de un programa de gobierno alineado con las propuestas del Consenso de Washington. En 2001, la gravedad de la crisis se tornó desesperante y produjo una serie de protestas y manifestaciones que tuvieron su punto más alto el 19 y 20 de diciembre, durante las jornadas conocidas como el Argentinazo. En conjunto con organizaciones populares como agrupaciones de desocupados y piqueteros, algunos colectivos artísticos acompañaron los reclamos con acciones en la vía pública. Arde! Arte fue uno de ellos. Entre 2001 y 2006, el colectivo operó en las calles de Buenos Aires con intervenciones que conjugaron recursos como la ironía, el humor y la denuncia, y lograron tensar la relación entre arte y política desde perspectivas antes inéditas, al tiempo que –conforme a su carácter desjerarquizado y horizontal– contribuyó a generar una mirada y una memoria acerca de la mayor crisis en la historia del país. Este artículo analizará algunas de sus acciones a la luz de las representaciones de la crisis producidas por Arde! Arte y su interacción con otros colectivos contemporáneos como GAC, Etcétera o TPS.Towards the ends of the nineties, Argentina was in a critic socio-economic situation, result of the application of a governmental program aligned with the proposals of the Washington Consensus. In 2001, the severity of the crisis became despairing and produced a series of protests demonstrations with its highest point during the events of 19th and 20th of December, know was Argentinazo. Together with popular organizations such as unemployed and piquetero2 associations, some artistic collectives accompanied the protests with actions in public spaces. Arde! Arte was one of them. Between 2001 and 2006, the group operated on the streets of Buenos Aires with interventions that conjugated resources like irony, humor and denunciation, and tensed the relationships between art and politics from unprecedented perspectives while –because of its dehierarchized and horizontal nature– contributing to generate a gaze and memory of the biggest crisis in the country’s history. This article will analyze some of their actions in the light of the representations of the crisis produced by Arde! Arte and its interactions with other contemporary collectives such as GAC, Etcétera and TPS.Fil: Feldman, Jonathan. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Las Artes. Instituto de Investigación y Experimentación En Arte y Critica; 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
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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