Winding modes and the reflection symmetry in AdS3 Iguri, Sergio Manuel; Kovensky, Nicolas; Maestri, Leila; Martín, Lucas Emilio We compute the contact term of the two-point function for the SL (2, ℝ)- WZNW model in the winding sector. After reviewing some generalities of the model and its Euclidean counterpart, we discuss the reflection symmetry for the spectral flowed sector. We define the corresponding intertwining operator and use it to find the explicit form of the contact term of the propagator for a vertex carrying an arbitrary amount of spectral flow. Finally, we enhance the already known integral expression of a singly flowed vertex in order to reproduce such contact term directly in the space-time picture.

Photoexcited energy relaxation and vibronic couplings in π-conjugated carbon nanorings Rodríguez Hernández, Beatriz; Oldani, Andres Nicolas; Martinez Mesa, Aliezer; Uranga Pina, Llinersy; Tretiak, Sergei; Fernández Alberti, Sebastián Conjugated carbon nanorings exhibit unique photophysical properties that, combined with their tunable sizes and conformations, make them suitable for a variety of practical applications. These properties are intimately associated to their strained, bent and sterically hindered cyclic structures. Herein we perform a comparative analysis of the photoinduced dynamics in carbon nanorings composed of nine phenyl units([9]CPP) and nine naphthyl units ([9]CN) respectively. The sterically demanding naphthyl units lead to large dihedral angles between neighboring units. Nevertheless, the ultrafast electronic and vibrational energy relaxation and redistribution is found to be similar for both systems. We observe that vibronic couplings, introduced by nonadiabatic energy transfer between electronic excited states, ensure the intramolecular vibrational energy redistribution through specific vibrational modes. The comparative impact of the internal conversion process on the exciton spatial localization and intra-ring migration indicates that naphthyl units in [9]CN achieve more efficient but less dynamical self-trapping compared to that of phenyl units in [9]CPP. That is, during the photoinduced process, the exciton in [9]CN is more static and localized than the exciton in [9]CPP. The internal conversion processes take place through a specific set of middle- to high-frequency normal modes, which directly influence the spatial exciton redistribution during the internal conversion, self-trapping and intra-ring migration.

Vicuñas y humanos en el pasado reciente (siglos XIX y XX) del oeste tinogasteño (Catamarca, Argentina); Vicuñas and Humans in the Recent Past (Nineteenth and Twentieth Centuries) of Western Tinogasta (Catamarca, Argentina) Miyano, Juan Pablo; Ratto, Norma Rosa Este trabajo explora la percepción sobre las vicuñas de los pobladores del oeste tinogasteño (Catamarca, Argentina) del pasado reciente (siglos XIX y XX). Para ello se analizan las manifestaciones orales tradicionales recopiladas en la Colección de Folklore que corresponden a distintas localidades de la región de estudio (La Ramadita, Medanitos y Fiambalá). Los resultados se integran y discuten con los sistemas simbólicos de la cosmovisión andina, la información proveniente de fuentes orales y escritas de otros sectores de los Andes centro-sur y la información arqueológica y zooarqueológica del oeste tinogasteño que da cuenta de la relación humano-animal entre los siglos V a. C. y XV d. C.; This paper examines the perception of the vicuñas by the habitants of western Tinogasta (Catamarca, Argentina) during the recent past (Nineteenth and Twentieth Centuries). For this purpose, we analyzed traditional oral manifestations compiled in the Colección de Folklore belonging to different localities of the region of study (La Ramadita, Medanitos y Fiambalá). The results were integrated and discussed with the symbolic systems of the Andean cosmovision, information from oral and written sources of other sectors of the south-central Andes, and archaeological and zooarchaeological information of the western Tinogasta, which accounts for human-animal relationships during the V BC and XV AD centuries

Enseñar a argumentar en la escuela secundaria: el caso de la Filosofía; Teaching how to argue in high school: the case of Philosophy Majorel, Cecilia; Padilla Sabate, Constanza; Rosconi, María Gabriela; Moisés, Fabiana María Diversas investigaciones en diferentes contextos educativos han evidenciado las dificultades de los estudiantes de escuelas secundarias para comprender textos de cierta complejidad y para fundamentar la propia postura ante diversos contenidos disciplinares. En Argentina, los estudios se han focalizado en estudios diagnósticos sobre la comprensión de textos narrativos y expositivos, pero no en los efectos de la implementación de propuestas didácticas que favorezcan la comprensión y producción de textos argumentativos. En este artículo, se sintetizan los resultados de una investigación colaborativa, realizada en una escuela secundaria pública del noroeste argentino, cuyo objetivo fue el diseño, implementación y evaluación de estrategias didácticas que priorizan el desarrollo de prácticas argumentativas dialógicas para promover el pensamiento crítico-en sentido amplio- (Paul y Elder, 2003), en el aprendizaje de la Filosofía. Se triangularon resultados obtenidos de tres fuentes de datos: producciones estudiantiles, perspectivas de los estudiantes y del docente, y las secuencias didácticas implementadas; Research in different educational contexts has shown the difficulties that high school students have understanding texts of a certain complexity and substantiating their own positions regarding several disciplinary contents. In Argentina, studies have focused on diagnostic studies on the understanding of narrative and expositive texts, but not on the effects of the implementation of teaching initiatives that favor the understanding and production of argumentative texts. In this article, we synthesise the results of a collaborative research, carried out in a public high school in the northwest of Argentina, whose objective was the design, implementation and evaluation of teaching strategies that prioritise the development of dialogical argumentative practices in order to promote critical thinking - in a broad sense- (Paul and Elder, 2003), when learning Philosophy. Results were triangulated from three data sources: students’ productions, students and teachers’ perspectives, and the implemented teaching sequences.

Two new species of Acanthobothrium Blanchard, 1848 (Cestoda: Onchoproteocephalidea) from rajiform batoids off Argentina Franzese, Sebastián; Ivanov, Veronica Adriana Two new species of Acanthobothrium Blanchard, 1848 were collected from rajiform batoids along the coast of Argentina. They are Acanthobothrium carolinae sp. n. from Bathyraja magellanica (Philippi) and Acanthobothrium domingae sp. n. from Dipturus brevicaudatus (Marini). Both belong to category 1 and 2 because their total length is lower than 15 mm, they have fewer than 50 proglottids, fewer than 80 testes and a  symmetric or asymmetric ovary. Acanthobothrium carolinae sp. n. differs from all congeners by the following combination of features: proglottid apolysis, hook morphology, microthrix pattern on the cephalic peduncle and distribution of the vitelline follicles. Acanthobothrium domingae sp. n. is unique in the combination of proglottid apolysis, total length, number of proglottids, hook and septal morphology, microthrix pattern on the cephalic peduncle, number and distribution of testes, cirrus sac length, distribution of the vitelline follicles and genital pore position. The discovery of these species increases the number of species of Acanthobothrium parasitising rajiform batoids off Argentina from one to three. All three species have a  unique pattern of distribution of the gladiate spinitriches along the length of the cephalic peduncle, i.e., gladiate spinitriches being interrupted in a  medial line both dorsally and ventrally.

Primary productivity determinants of different land uses in humid subtropical ecosystems: from native forests to tree plantations Diaz Villa, Maria Virginia Eva; Cristiano, Piedad María; de Diego, María Soledad; Rodríguez, Sabrina Andrea; Bucci, Sandra Janet; Scholz, Fabian Gustavo; Goldstein, Guillermo Hernan Land-use changes in forest ecosystems may alter the amount of carbon sequestration. The main objective of this study was to characterize the impact of different land-use practices on structure and functioning of humid subtropical forests that are under severe threat. We emphasize the characterization of canopy photosynthetic activity, assessed by the Enhanced Vegetation Index (EVI), the Leaf Area Index (LAI) and the fraction of Absorbed Photosynthetically Active Radiation (fPAR), using a combination of ground base measurements and remote sensing data on native well-preserved forests, impacted forests by selective logging and pine plantations in NE Argentina. Even though selective timber extraction resulted in a substantial decrease in stand’s tree density, EVI values were as high as those from preserved forests. In these forests, an increase in the understory cover appears to compensate the response of stand’s EVI to timber extraction. Removal of canopy trees enhances incoming solar radiation, allowing active growth of understory vegetation. The pine plantations exhibited the lowest values of LAI, fPAR and EVI. However, when EVI was normalized by LAI, the pine plantations exhibited the highest EVI/LAI values. Our results suggest that after 15 years of forest recovery from selective timber extraction, photosynthetic capacity was similar to that of preserved forests. Increases in the understory cover may compensate the potential decrease in the canopy photosynthetic activity. Pine plantations resulted in substantially lower productivity as depicted by lower EVI and LAI but exhibited higher growth efficiency than native forests.

Representaciones morales y grados de participación en el conflicto de 2007 en la industria pesquera de Mar del Plata, Buenos Aires, Argentina; Moral representations and degrees of participation in the 2007 conflict in the fishing industry of Mar del Plata, Buenos Aires, Argentina Schulze, Maria Soledad El presente artículo tiene como objetivo analizar las representaciones sobre la conflictividad laboral durante el año 2007 en un grupo de trabajadores de la industria de procesamiento de pescado de la ciudad puerto de Mar del Plata (Pcia. de Buenos Aires, Argentina). La atracción se dirige a este grupo de trabajadores/as que histórica y generacionalmente ha sufrido los efectos devastadores de la precariedad y la flexibilización laboral en la rama del filet. Específicamente, pretendemos explorar el grado de participación de nuestros entrevistados en un conflicto particular acontecido en el año 2007 en la industria pesquera de Mar del Plata. Consideramos sustantivo indagar dichas representaciones con relación a las trayectorias laborales, las condiciones laborales involucradas en dichas trayectorias y las relaciones de producción. Para lograr los objetivos planteados se utilizaron principalmente fuentes primarias, construidas a partir de una entrevista semiestructurada aplicada en terreno a 161 trabajadores y trabajadoras.; The objective of this article is to analyze representations of labor conflict in a group of workers in the fish processing industry of the port city of Mar del Plata (Province of Buenos Aires, Argentina). The attraction is addressed to this group of workers who, historically and generationally, have suffered the devastating effects of precariousness and labor flexibilization in the filet branch. Specifically, we intend to explore the degree of participation, of our interviewees, in a conflict that occurred in 2007 in the fishing industry of Mar del Plata. We consider substantive to investigate such representations in relation to work trajectories, the working conditions involved in these trajectories and the production relations. To achieve the proposed objectives, primary sources constructed from a semistructured interview applied in the field to 161 workers were used.

Partidos de derecha y estilos de liderazgo: notas sobre el PRO argentino y el PSL brasileño; Right-wing parties and leadership styles: notes on the Argentinian PRO and the Brazilian PSL; Partidos de direita e estilos de liderança: anotações sobre o argentino PRO e o brasileiro PSL Caruncho, Lucía Objetivo/contexto: este trabajo procura comparar las condiciones que contribuyeron al nacimiento, desarrollo y triunfo de los nuevos partidos de derecha en Argentina y Brasil (PRO y PSL) y los factores que podrían asociarse a la radicalización o moderación de sus liderazgos (Mauricio Macri y Jair Bolsonaro, respectivamente). Metodología: a partir de la confrontación de los hallazgos de los estudios especializados, se identifican las principales condiciones que contribuyeron a la consolidación de los partidos de derecha en América Latina, y los factores externos e internos que favorecieron el desarrollo y éxito del PRO y el PSL y la moderación o radicalización de sus liderazgos. Conclusiones: una explicación plausible es que el desarrollo y triunfo de estos partidos se relaciona con las condiciones coyunturales nacionales y con la capacidad de los partidos y sus líderes para aprovecharlas. Y los límites de sus liderazgos podrían adjudicarse mayormente a los legados históricos sociopolíticos nacionales. Originalidad: son escasos los estudios que comparan los casos de Argentina y Brasil; más aún, los vinculados con las diferencias entre sus nuevos partidos de derecha y sus liderazgos.; Objective/context: This study intends to compare the conditions that contributed to the birth, development and triumph of the new right-wing parties in Argentina and Brazil (PRO and PSL) and in the factors that could be associated with the radicalization or moderation of their leaderships (Mauricio Macri and Jair Bolsonaro, respectively). Methodology: Based on the review and analysis of the specialized literature, this article identifies the main conditions that contributed to the consolidation of right-wing parties in Latin America and in particular the most relevant external and internal factors that favored the development and success of PRO and PSL in addition to the moderation or radicalization of their leaders. Conclusions: A plausible explanation is that the development and triumph of these parties are mainly linked to the conditions of each nation and with the capacity of the parties and their leaders to take advantage of them. While the limits of their leaderships could be mostly attributed to the national socio-political historical legacies. Originality: There are few studies that compare the cases of Argentina and Brazil; even more those related to their new right-wing parties and recent leaderships.; Objetivo/Contexto: este trabalho compara as condições que contribuíram para o nascimento, desenvolvimento e triunfo dos novos partidos de direita na Argentina e no Brasil (PRO e PSL) e os fatores que poderiam estar associados à radicalização ou à moderação de suas lideranças (Mauricio Macri e Jair Bolsonaro, respectivamente). Metodologia: a partir do confronto dos achados dos estudos especializados, são identificadas as principais condições que contribuíram para consolidar os partidos de direita na América Latina e os fatores externos e internos que favoreceram o desenvolvimento e o sucesso do PRO e do PSL, bem como a moderação ou a radicalização de suas lideranças. Conclusões: o desenvolvimento e triunfo desses partidos podem ser explicados pela vinculação com as condições conjunturais nacionais e com a capacidade dos partidos e de seus líderes de aproveitá-las. Por sua vez, os limites de suas lideranças poderiam ser concedidos predominantemente aos legados históricos sociopolíticos nacionais. Originalidade: são escassos os estudos que comparam os casos da Argentina e do Brasil, mais ainda os relacionados às diferenças entre seus novos partidos de direita e suas lideranças.

Movimientos ciudadanos del siglo XXI: aportes para su conceptualización; Citizens movements in the twenty-first century: towards a conceptualization Annunziata, Rocío En distintos lugares del mundo estamos viendo surgir protestas y movimientos ciudadanos que ponen en cuestión el funcionamiento de las democracias, tanto de las que se consideraban jóvenes como de las maduras o establecidas. Este artículo se propone abordar los aportes realizados por la teoría política para conceptualizar estos movimientos ciudadanos contemporáneos. Primero, se revisan algunos de estos aportes teniendo en cuenta los rasgos que los estudios les atribuyen a estos movimientos: acción conectiva, auto-comunicación de masas, rechazo de las mediaciones políticas tradicionales, singularidad, carácter narrativo-expresivo, y contra-democracia, a los cuales agrego el carácter meta-democrático que demuestran algunos de estos movimientos que podríamos calificar de postsociales, como se intentará mostrar. Luego, se presentan algunas experiencias recientes para profundizar en los matices y diferencias que es posible establecer al interior del amplio abanico de los movimientos ciudadanos.; Protests and citizens movements contesting the very functioning of democracies have been erupting around the world, not only in countries considered as young democracies, but in those where democracy is more mature and established. This article addresses the contributions made by political theory to conceptualize these contemporary citizens movements. A selection of these contributions are reviewed in order to identify the features that authors attribute to these movements, including connective action, mass self-communication, rejection of traditional political mediations, singularity, narrative expression, and counter-democracy. To these is added the meta-democratic nature exhibited by some of these movements, which could in certain cases be described as post-social. A number of recent experiences are then analyzed in order to explore the nuances and distinctions that may be identified within the wide range of citizens movements that have taken place.

La regulación jurídica de la economía social y solidaria en Brasil y Argentina: algunas consideraciones; The legal regulation of the social and solidarity economy in Brazil and Argentina: some considerations Torres, Miguel Agustín Con diferencias de matices en lo referente a los fundamentos que la explican y a los fines que la impulsan, la economía social y solidaria fue adquiriendo, en las últimas décadas, una creciente relevancia en las sociedades de los países sudamericanos. La dinámica que observó en los últimos años el segmento social y solidario en Brasil y en Argentina se inscribe dentro de dicha tendencia. El desarrollo del ámbito social y solidario en estos dos escenarios nacionales instaló en sus sociedades el debate sobre la necesidad de profundizar en la regulación legal del sector. Teniendo en cuenta ello, en este trabajo se procura caracterizar el estado actual que exhibe la regulación jurídica de la economía social y solidaria en Brasil y en Argentina, en tanto faceta central del proceso de institucionalización, resaltando los principales aspectos que observan los respectivos marcos legales. El estudio permite advertir que la ausencia de una ley nacional específica en los dos Estados no fue un obstáculo para el desarrollo de regímenes provinciales sobre economía social y solidaria.; With some differences in nuances regarding the funda-mentals that explain it and the purposes that drive it, the social and solidarity economy has acquired in recent decades a growing relevance in the societies of the South American countries. The dynamic that observed in recent years the social and solidarity segment in Argentina and Brazil is part of this trend. The development of social and solidarity field in these two national scenarios installed in their societies the debate on the need to deepen the legal regulation of the sector. Taking this into account, this paper tries to characterize the current situation of the legal regulation of the social and solidarity economy in Brazil and Argentina as a central piece of the institutio-nalization process, highlighting the main aspects of the respective legal frameworks. The study shows that the absence of a specific federal law in the two States was not an obstacle to the development of provincial regimes for social and solidarity economy.

Prácticas, narrativas y temporalidad en Cusi Cusi (Rinconada, Jujuy): una mirada hermenéutica.; Practices, narratives and temporality in Cusi Cusi (Rinconada, Jujuy): a hermeneutic perspective Vaquer, Jose Maria; Petit de Murat, Facundo; Di Tullio, Martina En este trabajo presentamos los resultados de la interpretación de una serie de entrevistas realizadas a los habitantes de Cusi Cusi (Rinconada, Jujuy, Argentina) con motivo de la diagramación de un museo comunitario. Las entrevistas versaron sobre las relaciones entre el pasado y el presente, por lo que sirvieron como material para interpretar las nociones de temporalidad de los cuseños y las cuseñas; y las relaciones entre las prácticas y las narrativas. Para ello, utilizamos las herramientas interpretativas de la Antropología de la Experiencia junto con la fenomenología y la hermenéutica filosóficas. Proponemos que la temporalidad de los cuseños sintetiza dos lógicas, una circular, producto del pensamiento andino tradicional y otra lineal, producto de las instituciones occidentales. Sin embargo, ambas operan en la práctica cotidiana de manera coherente. Por otro lado, detectamos algunas contradicciones entre la experiencia práctica de los habitantes y su narrativización posterior, cuestión que puede deberse, entre otras, a los temas de la edad y del género. Finalmente, sostenemos que las lógicas de la temporalidad en Cusi Cusi no son tan diferentes de las nuestras, por lo que se debe tener cuidado a la hora de exotizar las narrativas de los demás.; In this paper we present the results of interpreting a series of ethnographic interviews conducted to people from Cusi Cusi (Rinconada, Jujuy, Argentina) on the occasion of laying out a communitarian museum. The interviews were about the relationships between past and present, therefore, they were useful as material to interpret notions of temporality among people from Cusi Cusi and the relationship between practice and narrative. To this end, we applied the interpretative tools from the Anthropology of Experience along with philosophical phenomenology and hermeneutics. We propose that temporality in Cusi Cusi synthesizes two logics: a circular one, related to the traditional Andean system of thought, and a lineal one, related to the work of Western institutions. However, they both operate in daily practice in a coherent way. On the other hand, we detected some contradictions between the practical experiences of the inhabitants and their subsequent narrative, what could relate, among other reasons, to their age and gender. Finally, we think that the logics of temporality in Cusi Cusi are not so different from our own, so caution must be taken when “exoticizing” other people’s narratives.

Virtual reality smartphone-based intervention for smoking cessation: Pilot randomized controlled trial on initial clinical efficacy and adherence Goldenhersch, Emilio; Thrul, Johannes; Ungaretti, Joaquín; Rosencovich, Nicolas; Waitman, Cristian; Rodriguez Ceberio, Marcelo Background: Obstacles to current tobacco cessation programs include limited access and adherence to effective interventions. Digital interventions offer a great opportunity to overcome these difficulties, yet virtual reality has not been used as a remote and self-administered tool to help increase adherence and effectiveness of digital interventions for tobacco cessation. Objective: This study aimed to evaluate participant adherence and smoking cessation outcomes in a pilot randomized controlled trial of the digital intervention Mindcotine (MindCotine Inc) using a self-administered treatment of virtual reality combined with mindfulness. Methods: A sample of 120 participants was recruited in the city of Buenos Aires, Argentina (mean age 43.20 years, SD 9.50; 57/120, 47.5% female). Participants were randomly assigned to a treatment group (TG), which received a self-assisted 21-day program based on virtual reality mindful exposure therapy (VR-MET) sessions, daily surveys, and online peer-to-peer support moderated by psychologists, or a control group (CG), which received the online version of the smoking cessation manual from the Argentine Ministry of Health. Follow-up assessments were conducted by online surveys at postintervention and 90-day follow-up. The primary outcome was self-reported abstinence at postintervention, with missing data assumed as still smoking. Secondary outcomes included sustained abstinence at 90-day follow-up, adherence to the program, and readiness to quit. Results: Follow-up rates at day 1 were 93% (56/60) for the TG and 100% (60/60) for the CG. At postintervention, the TG reported 23% (14/60) abstinence on that day compared with 5% (3/60) in the CG. This difference was statistically significant (χ21=8.3; P=.004). The TG reported sustained abstinence of 33% (20/60) at 90 days. Since only 20% (12/60) of participants in the CG completed the 90-day follow-up, we did not conduct a statistical comparison between groups at this follow-up time point. Among participants still smoking at postintervention, the TG was significantly more ready to quit compared to the CG (TG: mean 7.71, SD 0.13; CG: mean 7.16, SD 0.13; P=.005). A total of 41% (23/56) of participants completed the treatment in the time frame recommended by the program. Conclusions: Results provide initial support for participant adherence to and efficacy of Mindcotine and warrant testing the intervention in a fully powered randomized trial. However, feasibility of trial follow-up assessment procedures for control group participants needs to be improved. Further research is needed on the impact of VR-MET on long-term outcomes.

Animal domesticum et civile: orden económico y orden político en Tomás de Aquino, Jacobo de Viterbo, Juan Quidort y Dante Alighieri; Animal domesticum et civile: Economic and Political Order in Thomas Aquinas, James of Viterbo, John Quidort and Dante Alighieri Perez Carrasco, Mariano El artículo explora el modo en que las ideas políticas de Aristóteles fueron interpretadas por pensadores medievales como Tomás de Aquino, Jacobo de Viterbo, Juan Quidort de París y Dante Alighieri. La tesis central es que esos pensadores han tendido a establecer una profunda continuidad entre el orden económico y el orden político, y han dado pasos decisivos para comprender al ser humano no tanto como un animal político, sino como un animal doméstico (animal domesticum et civile es expresión tomística), es decir, como un ser fundamentalmente económico.; This paper explores the way in which Aristotle’s political philosophy was interpreted by medieval scholars such as Thomas Aquinas, James of Viterbo, John Quidort of Paris and Dante Alighieri. The main thesis is that they established deep continuity between the economic and political orders, and by doing so took a decisive step towards a new understanding of the human being: not so much as a political animal, but mostly as a domestic one (animal domesticum et civile is a Thomistic expression), i.e., as a fundamentally economic being.

Characterization of the seasonal variation of soil moisture in Argentina Fernández Long, María Elena; Peretti, Mercedes; Carnelos, Danilo Alejandro; Della Chiesa, Tomás; Spescha, Liliana Beatriz Soil moisture is an essential variable for both the agricultural production and the functioning of natural ecosystems, as well as one of the main variables regulating the climate system. Like precipitation, soil moisture has a marked annual cycle that depends mainly on the behaviour of precipitation and evapotranspiration. In this study, we developed a methodology that allows describing and characterizing the annual cycle of soil moisture in Argentina. For this purpose, we estimated soil moisture at 121 sites of Argentina by means of a simple hydrological balance (the BHOA, an acronym for its name in Spanish: “Balance Hidrológico Operativo para el Agro”) and analysed its intra-annual variability by means of different indices. This methodology allowed recognizing five different annual behaviours, with a consistent geographical pattern throughout Argentina. The characterization was based mainly on the time of occurrence of the annual maximum and minimum values of soil moisture, and secondly by the annual soil moisture content and seasonality. The northwest and part of the centre of Argentina present the minimum soil moisture values in spring and the maximum ones in autumn, while the east and south present the minimum values in summer and the maximum ones in winter. In general, sites with higher soil water content were found to have lower seasonality and vice-versa.

Detección de cambios (2004 - 2018) en la asignatura Sensores Remotos, Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata Zucchino, Betina; Derguy, María Rosa; Lamaro, Anabel Alejandra; Morales, Natalia Soledad; Drozd, Andrea Alejandra; Torrusio, Sandra Edith La asignatura Sensores Remotos es una materia de régimen anual, presencial, con unacarga horaria de 120 horas, que incorpora contenidos de Teledetección Espacial ySistemas de Información Geográfica (SIG). Desde 1983 se dicta en la Facultad deCiencias Naturales y Museo (FCNyM) de la Universidad Nacional de La Plata (UNLP),actualmente como materia optativa para las carreras de Biología, Geología yAntropología, y en la última década también como materia de postgrado. En el contextoglobal de los últimos 15 años se han dado fenómenos tales como la masificación deinternet, la disponibilidad y democratización de datos e información geoespacial, eldesarrollo de software libres y propietarios y de herramientas para la distribución dedatos de manera casi ubicua en la actualidad. Este contexto ha contribuido a unatransformación continua en el enfoque con que se dicta la asignatura y en el alumnadoque la cursa. El objetivo del presente trabajo es describir los cambios en la composiciónde cursantes, uso de datos, de herramientas de software y recursos didácticos a lo largodel período analizado. Para esto se utilizó como información de base los listados decursantes, que contenían los datos de carrera y modalidad de cursada (grado oposgrado); y el relevamiento de la evolución de herramientas de análisis aplicadas.Entre los cambios orientados por la cátedra durante el período de análisis se destaca laimplementación de software libre. La diversificación de alumnos de las distintascarreras y la complejización de las herramientas de análisis aplicadas refleja lamasificación de estas tecnologías.; The subject Remote Sensing is an annual course, face-to-face, with a load of 120 hours, which incorporates contents of Remote Sensing and Geographic Information Systems (GIS). It is taught at the School of Natural Sciences and Museum (FCNyM) since the '80s, currently as an optional subject for careers in Biology, Geology and Anthropology, and in the last decade as a postgraduate subject at the National University of La Plata. In the last 15 years the internet widespread, the availability and democratization of geospatial data and information, the development of free and proprietary software, and tools for the distribution of data has occurred in an almost ubiquitous manner nowadays. This context has contributed to a continuous transformation in the approach with which the subject is taught and in the students who study it. Our goal is to describe the changes in the composition of students, use of data, software tools and teaching resources throughout the period analyzed. Among the changes driven by the subject during the analysis period, highlights the implementation of free software. The diversification of students from the different careers and the complexity of the applied analysis tools reflect the widespread of these technologies.

Enfoques para la enseñanza de la Biología: una mirada para los contenidos; Approaches to teaching Biology: a look at the contents Bermudez, Gonzalo Miguel Angel; Occelli, Maricel En el marco de un diseño didáctico multirreferencial y contextualizado a necesidades específicas, tomar decisiones sobre los contenidos exige poner en juego conocimientos específicos de la didáctica de las ciencias. Tras relevar el uso del término enfoque en la bibliografía de didáctica de las ciencias experimentales y formación del profesorado, reconocemos como enfoques establecidos a CTSA, la interdisciplinariedad y la historia de las ciencias. Sin embargo, al conceptualizar nuestra postura acerca del concepto de enfoque, asociado a las decisiones que tomamos las y los docentes sobre los contenidos, realizamos un análisis epistemológico y didáctico de la Biología y de propuestas de enseñanza de esta disciplina. Con base en ello proponemos y describimos ocho enfoques más para la enseñanza de contenidos biológicos, que diversifican los tres enfoques anteriores: morfo-funcional, taxonómico-clasificatorio, evolutivo, sistémico y ecológico, educación ambiental y educación para el desarrollo sostenible, diversidad cultural, educación en salud y educación sexual integral.; Within the framework of a multi-referential didactic design and contextualized to specific needs, making decisions about the contents requires putting into play specific knowledge of science teaching. After reviewing the use of the term approach in the literature of didactics of experimental sciences and teacher training, we recognized as established approaches STSE, interdisciplinarity and the history of science. However, when conceptualizing our position on the concept of approach, associated with the decisions that teachers make about contents, we carried out an epistemological and didactic analysis of Biology and of teaching proposals of this discipline. Based on that, we propose and describe eight approaches more to teach biological contents, which diversify the three previous ones: morpho-functional, taxonomic-classificatory, evolutionary, systemic and ecological, environmental education and education for sustainable development, cultural diversity, health education, and comprehensive sexual education.

Vino, actores y tramas: espacios de concertación de políticas en la vitivinicultura argentina; Wine, Stakeholders and Frameworks: Negotiation Forums in Argentinean Viticulture and Winemaking Hernández, Juan Jesús; Moscheni Bustos, Margarita del Carmen El objetivo general de este artículo es caracterizar la trama institucional de la vitivinicultura argentina, a partir de la descripción de las organizaciones intervinientes (su representatividad y sus relaciones de poder) y del análisis de los espacios de concertación existentes, en cuanto a los actores participantes y excluidos, los temas tratados y los conflictos y consensos principales en cada uno de ellos. La metodología es cualitativa. Las fuentes utilizadas son la bibliografía especializada y 20 entrevistas a líderes de las organizaciones del sector vitivinícola y a funcionarios.Se pretende contribuir a la bibliografía sobre la institucionalidad de la vitivinicultura argentina mediante una descripción de los espacios de concertación actuales liderados por el Estado o por actores del sector privado. Este análisis da cuenta de la reproducción de las asimetrías y conflictos en el mercado vitivinícola en el orden institucional y político.

Processing of Zn-Substituted calcium silicate layers on Y-Tzp bioceramics by dip coating Bruni, Yesica Lorena; Puleston, Thomas P.; Albano, Maria Patricia Ceramic layers based on calcium silicate non-substituted and substituted by Zn with different thickness, were developed by immersing porous Y-TZP disks into SiO2–CaO–ZnO–P2O5 glass suspensions with ZnO contents in the range of 0–20 mol%. The effect of the disk surface porosity and the slip solid loading on the formation of the dip coated layer was investigated. Special emphasis was given to the ZnO content of the dip coating slurries and its influence on the thickness and composition of the sintered layer. The greater chemical stability of the 20 mol % ZnO-substituted glass powder during aqueous colloidal processing resulted in slips with low viscosity values; whereas the high dissolution rate of the glass having 10 mol% ZnO significantly increased the slip viscosity. The liquid entrainment mechanism at the initial stage was accelerated either by using 10 mol% ZnO-substituted glass slips or by increasing the slip solid loading. The casting rate for longer immersion times markedly increased by increasing the surface porosity of Y-TZP disks. Sintered layers with thickness ~30–70% lower were produced using the glass dip coating slip with 20 mol% ZnO in comparison to 10 mol% ZnO. The main crystalline phase of the coated sintered layers was Ca3Si3O9, Ca2ZnSi2O7 and ZnSiO4 for the glasses with 0, 10 and 20 mol% ZnO, respectively.

Estudiar y trabajar en Argentina: Un análisis de la situación laboral de jóvenes estudiantes de Nivel Superior universitario en el período 2008-2017; Study and work in Argentina: An analysis of the employment status of young student higher education in 2008-2017; Estudar e trabalhar na Argentina: Uma análise da situação de trabalho de jovens estudantes do nível superior-universitário no período 2008-2017 Busso, Mariana Este artículo se propone aportar a la comprensión de la realidad socioocupacional de los y las jóvenes que acceden a estudios superiores en la Argentina. Para ello se analizará la heterogeneidad de sus situaciones laborales a partir de un análisis diacrónico (2008 y 2017) y cuantitativo (procesamiento estadístico de microdatos, EPH- INDEC). Estas serán abordadas desde el análisis de la condición de actividad, y de la “calidad” de las ocupaciones a las que acceden. Aunque la mayoría de quienes asisten a una institución de educación superior se encuentra en la inactividad, alrededor de un tercio logra trabajar y estudiar simultáneamente, y la mayoría lo hace bajo relación asalariada no registrada, presentando marcadas diferencias según género y estrato socioeconómico. En el período 2008-2017 observamos la generación de escenarios laborales cada vez más distantes entre jóvenes estudiantes provenientes de diferentes estratos sociales.; This article aims to contribute to the understanding of the socio-occupational reality of young people who access higher education in Argentina. In order to do is, we will analyze the heterogeneity of their employment situations based on a diachronic (2008 and 2017) and quantitative analysis (statistical processing of microdata bases, EPH-INDEC). They will be addressed from the analysis of the labour force participation, and the “quality” of occupations.Although the majority of higher-level students are inactive, around a third manage to work and study simultaneously, and the majority do so under an unregistered employment, with marked differences to gender and socioeconomic status. In the 2008-2017 period, we observed the generation of increasingly different job scenarios among young students from different social classes; Este artigo tem como objetivo contribuir para a compreensão da realidade sócio-ocupacional de jovens que ingressam no ensino superior na Argentina. Para isso, a heterogeneidade das situações de trabalho será investigada com base em análises diacrônicas (2008 e 2017) e quantitativas (processamento estatístico de bases de microdados, EPH-INDEC). Elas serão atingidas a partir da análise da condição da atividade e da “qualidade” das ocupações a que acessam.Embora a maioria dos estudantes de ensino superior esteja economicamente inativa, quase um terço consegue trabalhar e estudar simultaneamente, e a maioria tem com uma relação salarial não registrada, mostrando diferenças marcantes de acordo com o gênero e o estrato socioeconômico. No período 2008-2017, observamos a geração de cenários de trabalho cada vez mais diferenciais entre jovens estudantes de diferentes estratos sociais.

Neoliberalismo, democracia y subjetividad: El pueblo como fundamento, estrategia y proyecto; Neoliberalism, democracy and subjectivity: The people as fundament, strategy and project; Neoliberalismo, democracia e subjetividade: O povo como fundamento, estratégia e projeto Stoessel, Soledad; Retamozo, Martin Este artículo se desarrolla a partir de dos interrogantes. El primero es cómo pensar el orden de dominación vigente que llamamos neoliberalismo y el segundo, cómo enfrentarlo en los tiempos contemporáneos en que aquel parece persistir a través de diversos dispositivos y técnicas. El neoliberalismo ha operado como un modo de regulación, una racionalidad y una subjetividad a lo largo del tiempo. Las formas de enfrentarlo, pues, deben contemplar esa triple dimensión. Mediante el voto universal es posible solventar la primera. Para erradicarlo en las otras dimensiones se requiere, en cambio, -y esta es la hipótesis de este texto- construir un sujeto “pueblo” que pueda asumirse como fundamento, estrategia y proyecto, con el horizonte de restituir el vínculo entre soberanía popular y justicia social, en el marco de instituciones democráticas.; The aim of this paper is to answer two questions. The first one is how to think about the contemporary neoliberal order, and the second, how to challenge it when it seems to persist through different devices and techniques. The neoliberalism has operated as a mode of regulation, a rationality and a subjectivity throughout time. The ways of tackling it, then, must contemplate these three dimensions. By means of elections it is possible to solve the first one. In order to face the other dimensions, it is necessary, instead - and this is the hypothesis of this paper- to build the "people" as a subject that works as foundation, strategy and project in the perspective of restoring the link between popular sovereignty and social justice, within the framework of democratic institutions; Este artigo analiza dois questões. A primeira é como pensar sobre a ordem atual de dominação que chamamos neoliberalismo e a segunda, como enfrentá-la nos tempos contemporâneos, quando parece persistir através de vários dispositivos e técnicas. O neoliberalismo tem funcionado como um modo de regulação, uma racionalidade e uma subjetividade ao longo do tempo. As formas de enfrentá-la, então, devem contemplar essa tríplice dimensão. Por meio do voto universal é possível resolver o primeiro. Para erradicá-lo nas outras dimensões, é preciso, ao invés - e esta é a hipótese deste texto -, construir um sujeito "povo" que possa tomar a forma de fundamento, estratégia e projeto, com o horizonte de restabelecer o vínculo entre soberania popular e justiça social, dentro do marco das instituições democráticas.