Some notes on neoextractivism, (post)neoliberalism, and populism in South America

This paper reflects on present-day South-American sociopolitical reality through three intertwined notions: (post)neoliberalism, populism, and neo-extractivism. It points that the configuration of populist leaderships is merely one of the features to understand the post-neoliberal stage, which is characterized by economic growth heavily dependent upon neo-extractivistic practices that lead to a production of rent from common goods, a part of which is destined to redistribution of income, and by forms of subjectivation and management which are influenced by neoliberal governmental rationality. Therefrom derive the precariousness and ambivalence of the transformations that have been driven by South-American “progressive” governments.Este trabajo reflexiona sobre la realidad sociopolítica sudamericana actual teniendo en cuenta tres categorías interrelacionadas: (pos)neoliberalismo, populismo, neoextractivismo. Señala que la configuración de liderazgos populistas es apenas uno de los aspectos para comprender una etapa posneoliberal signada por un crecimiento económico fuertemente dependiente de prácticas neoextractivistas que llevan a una producción de renta a partir de los bienes comunes –de la cual una parte se redistribuye– y de formas de subjetivación y de gestión influenciadas por la racionalidad gubernamental neoliberal. De allí el carácter precario y ambivalente de los procesos de transformación impulsados por los gobiernos “progresistas” de la región

De la nuda vida al uso

A partir de la publicación del primer volumen de la serie Homo Sacer, titulado El poder soberano y la nuda vida (1995), Agamben desarrolla una indagación arqueológica de los diversos dispositivos que definen y gobiernan la vida humana en occidente y las posibles alternativas que el pensamiento puede ofrecer para desactivarlos. Ya en el primer volumen dedicado a la producción de nuda vida como el aporte específico del poder soberano, Agamben indicaba un horizonte de interrupción o desactivación posibles de dichas máquinas letales. En este sentido, si el poder soberano produce la nuda vida1, separando el bíos de la zoé, habría que pensar una vida inseparable de su forma, una forma-de-vida. Si la metafísica aristotélica nos deja como legado un privilegio del ser-en-obra al cual mira necesariamente toda potencia, habría que recuperar la posibilidad de pensar una potencia que no deba pasar necesariamente al acto y que no se agote en él. Dicha posibilidad, tanto de pensar una forma-de-vida como de un nuevo tipo de relación con la propia (im)potencia encuentra una posible salida a la vez ética, política y ontológica en el uso. A lo largo de distintos textos, Agamben pensará el uso no sólo como aquello que se opone al consumo y a la propiedad privada (el uso deja ser aquello que usa, no lo destruye como el consumo, ni se lo apropia) sino también como una actividad que puede poner en cuestión la relación sujeto-objeto, potencia-acto, poiesis-praxis. En ese marco, intentaremos caracterizar el modo en que Agamben piensa el uso en distintos momentos de su trabajo en su intento de pensar una esfera de la acción sustraída a la operatividad.Fil: Saidel, Matías Leandro. Universidad Nacional de Entre Rios. Facultad de Trabajo Social; Argentina. Universidad Catolica de Santa Fe. Facultad de Filosofía. Instituto de Filosofía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentin

Estudio comparativo de capas de TiO2depositadas por PLD a presión atmosférica y nebulización pirolítica

Las nanocapas cerámicas son ampliamente estudiadas por su interés en aplicaciones tecnológicas. Estos recubrimientos pueden conformar celdas solares, superficies de transmisión, emisión o reflexión selectiva de luz, entre otras tantas aplicaciones. En este trabajo se presenta una comparación entre películas delgadas de TiO2 depositadas por ablación láser pulsado (PLD) y por nebulización pirolítica (sol-gel spray-pyrolisis, SP). La caracterización de las nanocapas se realizó empleando diversas técnicas como microscopía electrónica de barrido (SEM), espectrometría de dispersión de energía de Rayos X (EDS), microscopia de Fuerza Atómica (AFM), Difracción de Rayos X y espectroscopia Raman.TiO 2 layers and nanolayers are widely studied due to its technological applications. This material could be used in solar cells, transmission, emission or selective reflection, among other applications. In this paper, we show a characterization of layers of TiO 2 grown by two different methods, Pulsed Laser Deposition (PLD) at atmospheric pressure and spray pyrolysis (SP). The samples were characterized by SEM, EDS, AFM, XRD and Raman Spectrometry.Fil: Tejerina, Matías Rubén. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Tecnología de Recursos Minerales y Cerámica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Tecnología de Recursos Minerales y Cerámica; ArgentinaFil: Gamba, Martina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Ponce Cabrera, L.. San Petersburg Electrotechnical University; RusiaFil: Alvira, Fernando Carlos. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Hoffmann-Infeld Black Hole Solutions in Lovelock Gravity

Five-dimensional black holes are studied in Lovelock gravity coupled to Hoffmann-Infeld non-linear electrodynamics. It is shown that some of these solutions present a double peak behavior of the temperature as a function of the horizon radius. This feature implies that the evaporation process, though drastic for a period, leads to an eternal black hole remnant. Moreover, the form of the caloric curve corresponds to the existence of a plateau in the evaporation rate, which implies that black holes of intermediate scales turn out to be unstable. The geometrical aspects, such as the absence of conical singularity, the structure of horizons, etc. are also discussed. In particular, solutions that are asymptotically AdS arise for special choices of the parameters, corresponding to charged solutions of five-dimensional Chern-Simons gravity.Comment: 6 pages, 5 figures, Revtex4. References added and comments clarified; version accepted for publicatio

(−)-Istanbulin A

The title compound (systematic name: 9a-hydr­oxy-3,4a,5-trimethyl-4a,6,7,8a,9,9a-hexa­hydro-4H,5H-naphtho[2,3-b]furan-2,8-dione), C15H20O4, is a sesquiterpene lactone showing the typical eremophilanolide skeleton, which has been isolated from the plant Senecio candidans collected in the Chilean Magallanes region. The present study confirms the atomic connectivity assigned on the basis of 1H and 13C NMR spectroscopy, as well as the relative stereochemistry of the 4α-methyl,5α-methyl,8β-hydr­oxy,10β-H unit. The crystal structure is stabilized by inter­molecular O—H⋯O hydrogen bonds involving the hydr­oxy group as donor and the oxo group as acceptor, giving chains along the a axis. The absolute structure was not determined because of the lack of suitable anomalous scatters

One stone, many birds: Recent advances in functional nanogels for cancer nanotheranostics

Inspired by the development of nanomedicine and nanotechnology, more and more possibilities in cancer theranostic have been provided in the last few years. Emerging therapeutic modalities like starvation therapy, chemodynamic therapy, and tumor oxygenation have been integrated with diagnosis, giving a plethora of theranostic nanoagents. Among all of them, nanogels (NGs) show superiority benefiting from their unique attributes: high stability, high water-absorption, large specific surface area, mechanical strength, controlled responsiveness, and high encapsulation capacity. There have been a vast number of investigations supporting various NGs combining drug delivery and multiple bioimaging techniques, encompassing photothermal imaging, photoacoustic imaging, fluorescent imaging, ultrasound imaging, magnetic resonance imaging, and computed tomography. This review summarizes recent advances in functional NGs for theranostic nanomedicine and discusses the challenges and future perspectives of this fast-growing field. This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Diagnostic Tools > In Vivo Nanodiagnostics and ImagingChina Scholarship Council, Grant/Award Number: 201804910606; Eusko Jaurlaritza, Grant/Award Numbers: KK-2019/00086, KK-2020/00010, PIBA_2020_1_0056; Ikerbasque, Basque Foundation for Science; Marie Sklodowska-Curie Research and Innovation Staff Exchanges (RISE) "IONBIKE", Grant/Award Number: 823989; Ministerio de Economía y Competitividad (MINECO), Grant/Award Number: RTI2018-098951-B-I0

¿Qué comprensión de las conceptualizaciones del concepto de límite alcanzan los futuros profesores de matemáticas en bachillerato?

El póster contiene un resumen de una investigación de tipo experimental que se está desarrollando con 12 alumnos del máster de secundaria (4 arquitectos, 4 ingenieros y 4 matemáticos) sobre el concepto de límite. Se considera el marco teórico MKT (Ball, Thames y Phelps, 2008) relativo al conocimiento común y especializado del contenido, y las concepciones del límite intuitiva, aproximación óptima (Blázquez y Ortega, 2002) y métrica

Exchange Rate Policy in Chile: the Abandonment of the Band and the Floating Experience

As many countries worldwide, Chile has experienced virtually all the menu of options of exchange rate policies in the last forty years—with the sole exception of giving up its national currency. The quest for a reasonable exchange rate policy has been inspired in part by the different goals that, throughout these four decades, policymakers have attempted to achieve with this policy. After almost a decade of inflation targeting coexisting with an exchange rate band, in 1999 the Central Bank of Chile gave up the band and replaced it with a policy of floating. This paper deals with two main questions: (a) Why was the band abandoned and, by the same token, why did it last so long? and (b) How has the floating regime worked so far? The latter question involves accounting for the possible appearance of “fear of floating” by macroeconomic authorities, as well as evaluating the regime in three issues highlighted by the critics of exchange rate floating: passthrough to domestic prices, exchange rate volatility and balance sheet effects.

Stakeholders of Web Applications Requirements

Stakeholders play an important role to establish the requirements of a software system. In fact, systems are built to meet the needs of some stakeholders. They are also source of key requirements; not reaching to all the stakeholders of a system jeopardizes its completeness since the requirements are not detected. In Requirement Engineering, the matter has not been dealt with the required depth and consistency, thus the notion of “stakeholders” remained ambiguous as well as their associated processes. Especially, there is a lack of clear concepts regarding their role in Web applications, a subject that seems controversial (as confirmed by literature). We made ourselves the following question: who are the web application stakeholders and how should we manage them? Our special interest focuses on the local web applicationsdevelopment organizations. For this, we have conducted some field research that covered not only the stakeholder-related aspects, but also other areas of the requirement processes. This field research is a first approach to the problem and provides some answers, but also raises questions and suggests possible answers to some others.Sociedad Argentina de Informática e Investigación Operativ

On Nichols algebras over PGL(2,q) and PSL(2,q)

We compute necessary conditions on Yetter-Drinfeld modules over the groups \mathbf{PGL}(2,q)=\mathbf{PGL}(2,\FF_q) and \mathbf{PSL}(2,q)=\mathbf{PSL}(2,\FF_q) to generate finite dimensional Nichols algebras. This is a first step towards a classification of pointed Hopf algebras with group of group-likes isomorphic to one of these groups. As a by-product of the techniques developed in this work, we prove that there is no non-trivial finite-dimensional pointed Hopf algebra over the Mathieu groups $M_{20}$ and $M_{21}=\mathbf{PSL}(3,4)$.Comment: Minor change