152 research outputs found

    Dinámica de la agriculturización en el Valle Antinaco Los Colorados en el período 1976-2018

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    The objective of this work was to characterize the dynamics of agriculturalization spatially and temporally in the Antinaco Los Colorados Valley, in the Province of La Rioja, Argentina. For this purpose, a methodology based on photointerpretation of Landsat 2 and 8 images was used, where two moments 1976 and 2018 were analyzed. To evaluate the spatial and temporal dynamics of changes, three types of land cover were classified (agricultural areas, bare soils and natural vegetation), and the method uses the analysis of a cross-tabulation matrix at different levels to distinguish those changes resulting from more frequent transitions, in order to make a more complete assessment of the most significant changes that have occurred in the territory. This resulted in a net change of 23529.06 ha of areas of natural vegetation, 2568.42 ha of soil without vegetation and 20960.64 ha of agricultural land, while there were exchanges of 1968.30 ha, 460.98 ha and 12439.71 ha, respectively.El objetivo del trabajo fue caracterizar espacial y temporalmente la dinámica de la agriculturización en el Valle Antinaco Los Colorados, en la Provincia de La Rioja, República Argentina. Para ello se usó una metodología basada en fotointerpretación de imágenes Landsat 2 y 8, donde se analizaron dos momentos: 1976 y 2018. Para evaluar la dinámica espacial y temporal de cambios se clasificaron tres tipos de coberturas (áreas agrícolas, suelos desnudos y vegetación natural), a su vez el método emplea el análisis de una matriz de tabulación cruzada a diferentes niveles para distinguir aquellos cambios producto de transiciones más frecuentes, con el fin de realizar valoraciones más completas de los cambios más significativos ocurridos en el territorio. Esto resultó en un cambio neto de 23529,06 ha de áreas de vegetación natural, 2568,42 de suelo sin vegetación y de 20960,64 ha de tierras agropecuarias, mientras hubo intercambios de 1968,30 ha, 460,98 hay 12439,71 ha, respectivamente

    La pensée disciplinaire à la Socìetas Raffaello Sanzio : le choix de l’exclusion

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    L’histoire du théâtre est une histoire d’exclusion. L’élément qui unit à jamais certains réformateurs du théâtre du XVIIIe siècle — appelés à limiter l’ingérence des désordres qui accompagnaient les séances des spectacles — et des artistes contemporains qui souhaitent s’opposer aux pratiques bourgeoises du théâtre, est ce que nous avons appelé la pensée disciplinaire. Cette figure de pensée se situe aux croisements entre les écritures de la pratique et les écritures de la théorie lors de la naissance d’une nouvelle esthétique. Or, que l’esthétique en question ait comme but la recherche d’une intégration sociale ou, au contraire, un travail de rupture avec les codes en vigueur, elle s’accompagne toujours d’un nouveau système de contraintes, d’un nouvel ordre, paradoxalement demandeur d’une nouvelle exclusion. L’aperçu historique que nous proposons autour de la notion de pensée disciplinaire touchera à des interrogations fondamentales : le vertige de l’aliénation et ses monstres, les tensions entre texte et matière, la relation entre art et culpabilité, la crainte de la punition liée à l’exposition publique qui sont autant de lieux de la pensée et de la pratique artistique qu’on retrouvera aussi bien au XVIIIe siècle que dans le travail de redéfinition de l’art théâtral de la Socìetas Raffaello Sanzio, au XXe siècle.The history of theatre is one of exclusion. What we have designated here as disciplinary thought is that which unites certain theatre reformers of the 18th century called to limit the intrusion of disorders which accompanied representations and contemporary artists who wished to oppose bourgeois practices of theatre. This thought figure is found at the crossroads between practical and theoretical writings when a new aesthetic is born. That this aesthetic aims at social acceptability or on the contrary to break away from existing codes, it is always accompanied by a new system of constraints—a new order—that is paradoxically in need of new exclusions. The historical overview that we propose around the notion of disciplinary thought will concern itself with fundamental interrogations—the vertigo of alienations and its monsters, the tensions between text and matter, the relationship between art and culpability, the fear of punishment in regards to public exposure: all places of thought and artistic practices which we find during the 18th century but also, during the 20th century, in Socìetas Raffaello Sanzio's efforts in redefining theatre

    Detecção de corte seletivo de madeira por técnica de rotação radiométrica na floresta amazônica / Detecting selective logging using radiometric rotation techniques in the amazon forest

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    Este estudo teve por objetivo desenvolver uma metodologia para detectara exploração seletiva de madeira na Amazônia. Para alcançar este objetivoutilizou-se a técnica de detecção de mudanças baseada na rotaçãoradiométrica controlada por eixo de não mudança (RCEN) acoplada a umclassifi cador temático probabilístico. Esta técnica tem como vantagem dispensar a necessidade de correções radiométricas prévias para asimagens analisadas. Os resultados encontrados revelam que as áreas de florestas afetadas pela extração madeireira ultrapassaram a extensão das áreas de fl orestas convertidas para fi ns agrícolas na região de Cláudia, Mato Grosso. O desempenho do mapeamento da atividade madeireira foi satisfatório, apresentando um Kappa condicional de 0,72. Esforços futuros para o aprimoramento de um sistema operacional automatizado utilizando esta técnica serão envidado

    Detecção de corte seletivo de madeira por técnica de rotação radiométrica na floresta amazônicaDetecting selective logging using radiometric rotation techniques in the amazon forest

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    Este estudo teve por objetivo desenvolver uma metodologia para detectar a exploração seletiva de madeira na Amazônia. Para alcançar este objetivo utilizou-se a técnica de detecção de mudanças baseada na rotação radiométrica controlada por eixo de não mudança (RCEN) acoplada a um classificador temático probabilístico. Esta técnica tem como vantagem dispensar a necessidade de correções radiométricas prévias para as imagens analisadas. Os resultados encontrados revelam que as áreas de florestas afetadas pela extração madeireira ultrapassaram a extensão das áreas de florestas convertidas para fins agrícolas na região de Claudia, Mato Grosso. O desempenho do mapeamento da atividade madeireira foi satisfatório, apresentando um Kappa condicional de 0,72. Esforços futuros para o aprimoramento de um sistema operacional automatizado utilizando esta técnica serão envidados.Abstract The purpose of this study was to develop a methodology for detecting selective logging in the Amazon. To achieve this objective we used a change detection technique based on radiometric rotation controlled by the no-change axis (RCEN) coupled with a probabilistic thematic classifier. The advantage of this technique that is dispenses with radiometric corrections prior to the images analysis. The results show that Claudia, in the state of Mato Grosso. The performance of the method of mapping for logging activity was satisfactory, with a conditional Kappa value of 0.72. Future efforts to develop a system for automated operational detection using this technique will be undertaken

    Long-range angular correlations on the near and away side in p–Pb collisions at

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    Production of He-4 and (4) in Pb-Pb collisions at root(NN)-N-S=2.76 TeV at the LHC

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    Results on the production of He-4 and (4) nuclei in Pb-Pb collisions at root(NN)-N-S = 2.76 TeV in the rapidity range vertical bar y vertical bar <1, using the ALICE detector, are presented in this paper. The rapidity densities corresponding to 0-10% central events are found to be dN/dy4(He) = (0.8 +/- 0.4 (stat) +/- 0.3 (syst)) x 10(-6) and dN/dy4 = (1.1 +/- 0.4 (stat) +/- 0.2 (syst)) x 10(-6), respectively. This is in agreement with the statistical thermal model expectation assuming the same chemical freeze-out temperature (T-chem = 156 MeV) as for light hadrons. The measured ratio of (4)/He-4 is 1.4 +/- 0.8 (stat) +/- 0.5 (syst). (C) 2018 Published by Elsevier B.V.Peer reviewe

    Riociguat treatment in patients with chronic thromboembolic pulmonary hypertension: Final safety data from the EXPERT registry

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    Objective: The soluble guanylate cyclase stimulator riociguat is approved for the treatment of adult patients with pulmonary arterial hypertension (PAH) and inoperable or persistent/recurrent chronic thromboembolic pulmonary hypertension (CTEPH) following Phase

    Underlying Event measurements in pp collisions at s=0.9 \sqrt {s} = 0.9 and 7 TeV with the ALICE experiment at the LHC

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