Mobility of human populations in the Curi Leuvú basin, Northwest Patagonia, during the Holocene: An approach based on oxygen isotopes Bernal, Valeria; Dabramo, Sergio Luis; Gordón, Florencia; Gonzalez, Paula Natalia; Perez, Sergio Ivan The Curi Leuvú basin, in the northwest of Patagonia, had a central role for the indigenous groups that inhabited the region during the Holocene. The area has access to critical resources such as water throughout the year and is near highlands with high carrying capacity during the summer, which has led to hypothesize the establishment of a seasonal pattern of vertical mobility. The presence of several large burial sites along the valleys support the use of the basin as a residential area. Here, we assessed the short and long distance mobility of human populations between 5000 and 200 years BP using oxygen isotopes. We show that δ18O terrestrial sources of water display astrong spatial pattern both at regional as well as macro-regional scales, having lower values in the highlands and higher as the altitude and the distance to the Pacific and Atlantic coast decrease. The δ18O values of human bone samples from the Curi Leuvú basin are within the range of nearby sources at low and high altitude, suggesting a predominantly regional scale of mobility throughout the Middle-Late Holocene. For future studies remain to be elucidated whether the seasonal displacement between lowlands and highlands, in winter and summer months respectively, involved a logistic or residential mobility.

Murga de mujeres y sus voces políticas: La experiencia de Modestia Aparte en Rosario, Argentina Lucca, Juan Bautista La murga estilo uruguayo es una expresión artística de carnaval que conjuga recursos estéticos provenientes de numerosas artes escénicas con una mirada crítica, que se manifiesta en su performance y su dinámica interna. Históricamente, originada en Uruguay, fue un espacio reservado a los hombres. Desde hace unas décadas, esta manifestación política de carnaval ha producido múltiples cambios gracias a la incorporación de voces de mujeres y la extensión del género teatral-musical en otras regiones de América del Sur. En este artículo, presentamos la participación de las mujeres en las murgas ?a la uruguaya? de la ciudad de Rosario (Argentina) y, particularmente, analizamos la experiencia de Modestia Aparte: primera murga feminista e integrada por mujeres. Analizamos la dimensión política, su crítica y vociferación del desacuerdo con el orden patriarcal, poniendo el acento en su conformación, poética en sus espectáculos y vínculo con el público.

Aprendizaje organizacional: una demarcación conceptual para su medición; Organizational Learning: A conceptual Demarcation for Measurement; Aprendizagem organizacional: uma delimitação conceitual para sua medição Camio, María Isabel; Diaz Bilotto, Constanza María; Izquierdo, Silvia Irene; Álvarez, María Belén El aprendizaje organizacional (ao) ha sido estudiado como una capacidad o proceso que permite mejorar la performance de las organizaciones. Sin embargo, el campo de estudio del ao se caracteriza por contar con posturas y definiciones heterogéneas o no explicitadas, a partir de las cuales se construyen diversos modelos de medición. El objetivo de este trabajo es proponer una conceptualización del fenómeno del ao desde una perspectiva multidimensional que articule aportes y elementos de las distintas definiciones, y señalar sus implicancias metodológicas para la medición del fenómeno. Para cumplir con ese objetivo, se realiza una revisión sistemática de la literatura en las bases de datos Scopus y Google Scholar. Los 36 artículos seleccionados se analizan en profundidad en un proceso iterativo de lectura, codificación y análisis comparativo. De lo anterior se extraen ocho elementos centrales, descritos y articulados en una propuesta de definición de ao. Finalmente, se discute la postura ontológica y epistemológica que sustenta la conceptualización del fenómeno propuesta y se señalan las implicancias en términos metodológicos para la medición del ao. La principal contribución de este artículo es el desarrollo de una definición multidimensional de ao con una mirada ontológica y epistemológica del fenómeno, con vistas a su medición. De esta manera se busca superar definiciones reduccionistas, y reconocer su complejidad.; Organizational learning (ol) has been studied as a capability or process for improving organizations’ performance. However, this field of study is characterized by heterogeneous or unspecified positions and definitions from which various measurement models are built. This paper aims to propose an ol conceptualization from a multidimensional perspective that brings together insights and elements from the different definitions and point out its methodological implications for measuring the phenomenon. For this, literature is reviewed systematically in the Scopus and Google Scholar databases. The 36 selected articles are examined in depth in an iterative reading, coding, and comparative analysis process. Eight central elements are extracted, described, and assembled in a proposed definition of ol. Finally, the ontological and epistemological position that supports the proposed conceptualization is discussed, pointing out its methodological implications for ol measurement. The main contribution is the development of a multidimensional definition of ol with an ontological and epistemological view for its measurement. Thus, it seeks to overcome reductionist definitions and recognize its complexity.; A aprendizagem organizacional (ao) vem sendo estudada como uma capacidade ou processo que permite melhorar a performance das organizações. Contudo, o campo de estudo da ao é caracterizado por contar com posicionamentos e definições heterogêneos ou não explícitos, a partir dos quais são construídos diversos modelos de medição. O objetivo deste trabalho é propor uma conceituação do fenômeno da ao sob uma perspectiva multidimensional que articule contribuições e elementos das diferentes definições, e indicar suas implicâncias metodológicas para avaliar o fenômeno. Para atingir esse objetivo, é realizada uma revisão sistemática da literatura nas bases de dados da Scopus e do Google Scholar. Os 36 artigos selecionados são analisados em profundidade em um processo iterativo de leitura, codificação e análise comparativa. A partir disso, são extraídos oito elementos centrais, descritos e articulados em uma proposta de definição de ao. Por último, é discutido o posicionamento ontológico e epistemológico que subsidia a conceituação do fenômeno proposta e são apresentadas as implicâncias em termos metodológicos para avaliar a ao. A principal contribuição deste artigo é o desenvolvimento de uma definição multidimensional da ao com um olhar ontológico e epistemológico do fenômeno, com vistas à sua medição. Dessa maneira, pretende-se superar definições reducionistas e reconhecer sua complexidade.

La enseñanza de las Ciencias Forestales en Argentina: Aspectos relevantes de la formación y el perfil de los egresados; Education in forest sciences in Argentina: Relevant aspects in the training and profile of its graduates Goya, Juan Francisco; Paso, Mónica Luisa; Fava, Maximiliano; Acciaresi, Gustavo Hernán; Graciano, Corina El presente trabajo surge como resultado del Taller sobre educación de las Ciencias Forestales en la Argentina realizado en Buenos Aires en agosto del 2019, organizado por la Comisión de Educación de la Red Argentina de Ciencia y Tecnología Forestal (REDFOR.ar). Este taller tuvo como objetivo central generar un espacio de discusión de varios aspectos relacionados a la enseñanza de las carreras forestales en Argentina: la situación académica en las carreras Forestales en lo referente a la matriculación, graduación e inserción profesional de los egresados. Asimismo, discutimos sobre el perfil profesional de las carreras forestales e identificamos consensos, debates e interrogantes. Analizamos las tendencias actuales en la educación forestal a nivel mundial y la formación y el rol de los docentes en ciencias forestales, con énfasis en los posibles enfoques y estrategias pedagógicas. En el contexto de la pandemia por COVID-19 y las estrategias de continuidad académica implementadas, incluimos un apartado final sobre la educación a distancia en el marco de la pandemia y analizamos algunos problemas y perspectivas futuras. Este documento es un aporte a los temas que están en debate actualmente y a aquellos que, muy probablemente, serán relevantes a mediano plazo en el ámbito de la educación forestal universitaria.; This paper derives from a workshop about education in forest sciences, organized by the Argentinian net in forest science and technology (in Spanish: Red Argentina de Ciencia y Tecnología Forestal, i.e. REDFOR.ar). The aim of the workshop was to analyze several aspects related to the teaching in forest programs in Argentinian Universities. We analyzed the current demand for enrolment, graduation rates and employability of the graduates of forestry degree programs. We also discussed about the professional background in the forest programs and we identified consensus, debates, and questions. We analyzed current trends at the university-level forestry education worldwide as well as the role and the need of training of the faculty emphasizing some perspectives and pedagogic strategies. Within the context of the COVID-19 pandemic and the educational strategies adopted to ensure continuity of education, we included a section about distance learning during the pandemic and we analyzed some weak points and future perspectives. This document is a contribution to both the topics being discussed nowadays and others that will probably be relevant in the medium term in university-level education in forestry.

Enseñanza de la programación en la Escuela Secundaria de Adultos a partir de un Recorrido de Estudio e Investigación; Introduction to programming in adult secondary school through Study and Research Path; Introduction à la programmation des écoles secondaires pour adultes à travers d'un Parcours d'Étude et de Recherche; Introdução à programação na escola secundária para adultos por meio de um Percurso de Estudo e Pesquisa Donvito, Angel Eduardo; Otero, Maria Rita En este trabajo se propone un Recorrido de Estudio e Investigación (REI) para introducir la enseñanza de la programación en las clases de matemática de la Educación Secundaria de Adultos. La cuestión generatriz es ¿Cómo programar el robot Sphero para que forme con su trayectoria polígonos regulares y exprese sus principales características? Aquí se presenta un posible Modelo Praxeológico de Referencia referido al REI, donde se describen las sub-cuestiones derivadas y las praxeologías involucradas tanto de las ciencias de la computación como de matemática. El recorrido involucra nociones básicas de programación como comandos, variables, decisiones, bucles y a los polígonos regulares desde la geometría sintética y analítica. Los saberes computacionales y matemáticos involucrados poseen utilidad formativa inherente porque se requiere programar el robot, identificar las variables necesarias, realizar cálculos y establecer donde deben tomarse las decisiones que permitan elaborar los diferentes algoritmos posibles.; In this work, a Study and Research Path (SRP) to introduce teaching of programming in mathematics classes in Adult Secondary Education is proposed. The SRP starts from the question how do to code a Sphero robot for it draws with its trajectory regular polygons and expresses its main features? We develop a Praxeological Reference Model and describe the derived sub-questions and the praxeologies involved in both computer science and mathematics. The study involves basic programming notions such as commands, variables, decisions, loops, and regular polygons from synthetic and analytic geometry. The results show that Computational and Mathematical knowledge could be studied for its inherent formative utility to program the robot: identify the necessary variables, perform calculations and establish the main decisions that may lead the algorithm by different procedures.; Dans ce travail, nous proposons d'étude et de recherche (PER) pour introduire l'enseignement de la programmation dans les classes de mathématiques de l'enseignement secondaire pour adultes. La question de parti du PER est: comment programmer un robot Sphero pour il dessine avec sa trajectoire des polygones réguliers et exprime ses principales caractéristiques? Nous développons un modèle praxéologique de référence et décrivons les sous-questions dérivées et les praxéologies impliquées à la fois en informatique et en mathématiques. L'étude implique des notions de programmation de base telles que les commandes, les variables, les décisions, les boucles, et des polygones réguliers issus de la géométrie synthétique et analytique,. Les résultats montrent que les connaissances informatiques et mathématiques pourraient être étudiées pour leur utilité formative inhérente à la programmation du robot: identifier les variables nécessaires, effectuer des calculs et établir les principales décisions qui peuvent conduire l'algorithme par différentes procédures.; Neste artigo, propomos um Percurso de Estudo e Pesquisa (PEP) visando introduzir o ensino de programação em aulas de matemática no Ensino Médio de Adultos. O PEP começa com a pergunta: como programar o robô Sphero para que forme polígonos regulares com sua trajetória e expresse suas características principais? Desenvolvemos um modelo praxeológico de referência e descrevemos as subquestões derivadas e as praxeologias envolvidas na ciência da computação e na matemática. O estudo envolve noções básicas de programação, como comandos, variáveis, decisões e loops, além dos polígonos regulares nos contextos da geometria sintética e analítica. O conhecimento computacional e matemático é estudado pela sua utilidade formativa inerente à programação do robô, tais como: identificar as variáveis necessárias, realizar cálculos e estabelecer onde as decisões que conduzem ao algoritmo por diferentes procedimentos devem ser feitas.

El intento de copamiento de La Tablada (1989): Represión, Justicia y Derechos Humanos; The attempt to take la tablada (1989): Repression, justice and human rights Scocco, Marianela El 23 de enero de 1989, militantes de la agrupación MTP encabezados por Enrique Gorriarán Merlo –histórico dirigente del PRT-ERP–, intentaron copar los cuarteles del Regimiento de Infantería Mecanizada 3 “General Belgrano” en la localidad argentina de La Tablada, con el supuesto propósito de frustrar un golpe militar carapintada en contra del gobierno de Raúl Alfonsín, quien había enfrentado tres levantamientos militares a lo largo de su gestión. La represión fue desmedida y violenta y dejó varias personas heridas, muertas y desaparecidas. En este artículo me propongo analizar las lecturas del ataque a La Tablada y el derrotero de la justicia al respecto, poniendo énfasis en las violaciones a los derechos humanos producidas, el rol del Estado, las consecuencias en la modificación de las leyes represivas y el cambio en la correlación de fuerzas en la relación gobiernos/militares.; On January 23, 1989, militants of the Movimiento Todos por la Patria (MTP) group headed by Enrique Gorriarán Merlo, attempted to cover the barracks of the Mechanized Infantry Regiment 3 “General Belgrano” in the Argentine town of La Tablada, with the alleged purpose of thwarting a military coup against the government of Raúl Alfonsín, who had faced three military uprisings throughout his administration. The repression was excessive and violent and left several people injured, dead and disappeared. This article proposes to analyze the readings of the attack on La Tablada and the course of justice in this regard, emphasizing the violations of human rights produced, the role of the State, the consequences in the modification of repressive laws and change in the correlation of forces in the governments / military relationship.

Nonclassical roles for IFN-γand IL-10 in a murine model of immunoedition del Giúdice, Antonela; Pagura, Lucas; Capitani, María Celeste; Mainetti, Leandro Ernesto; Scharovsky, Olga Graciela; Di Masso, Ricardo Jose; Rico, Maria Jose; Rozados, Viviana Rosa Aims: to characterize, by means of univariate and multivariate approaches, the Th1 and Th2 responses during the different phases of tumor immunoediting. Materials & Methods: we used a multivariate principal component analysis applied to analyze the joint behavior of serum concentrations of IFN-γ, IL-2, IL-10 and IL-4, during the different phases of tumor immunoediting, in CBi/L mice challenged with M-406 mammary adenocarcinoma. Results & Conclusions: Animals in equilibrium phase showed the widest variations in values of the four cytokines. In this experimental model the role of IFN-γ would be related to tumor growth and progression, while IL-10 would participate in the antitumor immune response. Lay abstract: Breast cancer is a complex, multifactor disease that affects about 10% of women in industrialized countries. The immune system has the ability to monitor the appearance of tumors, but the tumors have the ability to escape such rejection. For this reason, in order to design different therapeutic strategies, it is important to know the different mechanisms that take place when a tumor grows or when it is rejected. Here we sought to elucidate some of these mechanisms

Reciclado masivo de la envolvente urbano-edilicia basado en procesamiento digital de imágenes, La Plata, Argentina; Mass retrofitting of building envelope at urban level based on digital image processing, La Plata, Argentina Viegas, Graciela Melisa; Barbero, Dante Andrés; Chevez, Pedro Joaquín; Martini, Irene; Discoli, Carlos Alberto El presente trabajo busca generar soluciones para abordar la problemática del reciclado edilicio masivo del sector residencial a nivel urbano. Para ello, se desarrolla una metodología innovadora orientada a identificar los distintos materiales constructivos de la envolvente urbana-edilicia para realizar estimaciones de ahorro de energía por incorporación de eficiencia energética. Se propone el procesamiento digital de imágenes satelitales SPOT 6 y aéreas a través de clasificaciones. En este caso se clasifican los techos; se determina la calidad de los resultados; y sobre los mejores resultados se aplican estrategias de mejora de la envolvente para su tratamiento masivo a escala urbana. Como caso de aplicación se trabajó con el sector residencial del partido de La Plata, Argentina. Los resultados mostraron que las clasificaciones con imágenes aéreas alcanzan una buena precisión para la complejidad urbana abordada (70 %). Esto permitió estimar la potencialidad de ahorros de energía anual para calefacción entre 2000 y 3000 kWh/año por vivienda, visualizados en forma ágil por medio de cartografía urbana. En efecto, el uso de sensores remotos aplicados al análisis detallado y masivo de áreas urbanas aporta un conocimiento de interés y poco difundido en nuestra región. A su vez, esta metodología puede ser extrapolada a ciudades con características análogas.; The purpose of this work is to provide solutions for mass retrofitting of building envelope in residential areas at urban level. An innovative methodology is developed that identify the different construction materials of the urban-building envelope in large-scale to estimate energy saving by recycling them with energy efficiency criteria. It is proposed the digital processing of SPOT 6 satellite and aerial images through semi-automatic classifications. In this case, the roofs are classified, the quality of the results is determined, the most appropriate processing is defined, and with these results envelope improvement strategies are applied for mass treatment at urban level. The work was carried out in the residential area of La Plata department, Argentina. The results showed that the classifications with aerial images achieve good precision for the complexity addressed (70%). This allowed estimating energy savings which can be seen on urban maps easily showing the annual energy saving potentialities for heating between 2000 and 3000 kWh/year per house. In effect, the use of remote sensors applied to the detailed and massive analysis of urban sectors provides a little disseminated knowledge of interest in our region. In turn, this methodology can be applied to cities with similar characteristics.

Influence of melatonin and sexual hormones on the expression of proliferating cell nuclear antigen in the adrenal cortex of a seasonal breeder (Lagostomus maximus) Gallol, Luis Ezequiel; Busolini, Fabricio Iván; Mohamed, Fabian Heber The viscacha (Lagostomus maximus) is a rodent of nocturnal habits, whose physiology and behavior vary according to modifications of environmental signals. The objective of this study is to assess the influence of melatonin and sexual hormones on the viscacha adrenal cortex proliferative activity through the immunohistochemical detection of proliferating cell nuclear antigen (PCNA) along with hormonal determinations. PCNA expression was studied in male viscachas to assess the effect of melatonin administration, castration and the annual reproductive cycle. In female viscachas, PCNA was studied in nonpregnant and pregnant viscachas. PCNA expression was observed in adrenocortical cells (PCNA-A) and endothelial cells (PCNA-E). Melatonin-administered animals showed a significantly lower number of PCNA-A compared to the control group. No significant difference could be established in the number of PCNA-A and PCNA-E between castrated and control animals. However, the morphometric analysis showed an increase in the size of the cortex of castrated animals, along with other cytological features. Significant differences in serum testosterone levels were observed during the male viscacha reproductive cycle, with the lowest levels encountered during the regression period (winter). Male viscachas exhibited a significantly high number of PCNA-A during late autumn and a high number of PCNA-E during winter. In females, hormonal determinations showed a peak of progesterone and estrogen during mid-pregnancy, along with a notably high number of PCNA-A and an increase in the number of PCNA-E. Our results suggest that proliferation in the adrenal cortex of the viscacha varies in relation to melatonin, sexual hormones and environmental conditions.

Comedores comunitarios: acceso a los alimentos y preparaciones posibles. Experiencias colectivas en la provincia de Buenos Aires; Soup Kitchens: Food Access and Feasible Food Preparations. Collective Experiences in the Buenos Aires Province Sordini, María Victoria Los comedores comunitarios en Argentina emergieron como una acción espontánea para paliar las necesidades alimentarias desde fines de la década de 1980. Múltiples programas alimentarios intervienen en su financiamiento, infraestructura y abastecimiento. El objetivo de este trabajo es analizar las preparaciones alimentarias de los comedores comunitariosy su articulación con las prestaciones estatales destinadas a los mismos. Establecer dicha relación permite identificar las estrategias de auto-organización que despliegan, para cocinar, lasmujeres responsables de comedores comunitarios en barrios populares del Partido de GeneralPueyrredon en 2020. El diseño del estudio es cualitativo. Se realizaron entrevistas en profundidad a mujeres responsables de comedores comunitarios. El muestreo es teórico con la técnicabola de nieve. Entre los principales resultados se observó que la implementación de las políticas alimentarias modula una estructura de desigualdades en la que amplios sectores socialesacceden a una alimentación deficiente. El predominio de entregas de alimentos secos contribuye a reforzar comidas rendidoras y monótonas que se definen como ricas y mágicas. Es preocupación y tarea de las cocineras mejorarlas nutricionalmente. El acceso a alimentos frescosrequiere la sobrecarga de tareas en las mujeres.; Soup kitchens have emerged in Argentina as a spontaneous action to palliate nutritional needs since the late 1980s. Multiple food programs are involved in their funding, infrastructure, and supply. This paper aims to analyze soup kitchen's food preparation and their coordination with the state assistance provided to them. Establishing this relationship allows for identifying self-organization strategies used for cooking by women in charge of soup kitchens in marginal areas of the District of General Pueyrredon in 2020. This is a qualitative study. Through theoretical snowball sampling, in-depth interviews that were conducted with women responsible for soup kitchens. The main results show that food policies implementation modulates an inequality structure whereby many different social groups have access to poor feeding practices. The predominance of dry food supply reinforces monotonous and filling meals defined as tasty and magical. Women responsible for cooking are expected to improve these meals nutritionally. Access to fresh food implies work overload for such women.

Kingship in Syria-Palestine: Some comments regarding a recent publication Pfoh, Emanuel Oreste Since the inception of modern ancient Near Eastern and Biblical studies in the nineteenth century, the institution of kingship, with the features comprising the monarchical practice and deeds, successions to the throne, etc., has been one of the central topics of historical enquiry in these disciplines.In effect, kings and rulers have been a most studied theme given the positivist nature of modern historical scholarship until the 1930s, with the appearance of the French Annales school in continental historiography widening the field to other analytical pursuits, especially since the 1960s. Ancient Near Eastern historiography not always catches up in time with the theoretical developments in general history studies and thus it is usual to witness approaches to the most recently excavated archaeological data or the most recently deciphered epigraphic materials still from rather positivist perspectives. The publication of Changing Faces of Kingship in Syria-Palestine 1500-500 BCE in 2018, edited by Agustinus Gianto and Peter Dubovský, offers then an opportunity to evaluate?albeit succinctly?this situation, assessing how much the modes of interpreting kingship have changed in ancient Near Eastern scholarship since the nineteenth century, but also exposing some analytical and conceptual issues in need of further study. Although it is not my wish to proceed with such a century-long comparison, one should nonetheless keep in mind this historiographical perspective.

Genetic polymorphisms of IL17A associated with Chagas disease: Results from a meta-analysis in Latin American populations Strauss, Mariana; Palma-Vega, Miriam; Casares Marfil, Desiré; Pau Bosch, Nicolau; Lo Presti, Maria Silvina; Molina, Israel; Gonzáles, Clara Isabel; Martin, Javier; Acosta Herrera, Marialbert Genetic factors and the immunologic response have been suggested to determine the susceptibility against the infection and the outcome of Chagas disease. In the present study, we analysed three IL17A genetic variants (rs4711998, rs8193036 and rs2275913) regarding the predisposition to Trypanosoma cruzi infection and the development of chronic Chagas cardiomyopathy (CCC) in different Latin American populations. A total of 2,967 individuals from Colombia, Argentina, Bolivia and Brazil, were included in this study. The individuals were classified as seronegative and seropositive for T. cruzi antigens, and this last group were divided into asymptomatic and CCC. For T. cruzi infection susceptibility, the IL17A rs2275913*A showed a significant association in a fixed-effect meta-analysis after a Bonferroni correction (P = 0.016, OR = 1.21, 95%CI = 1.06–1.41). No evidence of association was detected when comparing CCC vs. asymptomatic patients. However, when CCC were compared with seronegative individuals, it showed a nominal association in the meta-analysis (P = 0.040, OR = 1.20, 95%CI = 1.01–1.45). For the IL17A rs4711998 and rs8193036, no association was observed. In conclusion, our results suggest that IL17A rs2275913 plays an important role in the susceptibility to T. cruzi infection and could also be implicated in the development of chronic cardiomyopathy in the studied Latin American population.

Defusing Master Narratives: Decolonial, Insurgent, Gentle Moves in a Con-Text of Teacher Education and Educational Research Yedaide, Maria Marta; Porta Vazquez, Luis Gabriel This article intends to share a very particular perspective on teacher education and educational research while asserting the inevitability, inescapability, of such local epistemological bias. It discusses the hermeneutic, narrative, decolonial and performative turns and their interplay with the geocultural and political conditions in a con-text which is acknowledged as highly productive (and strongly conditioning) of social meaning. On the basis of teaching and research experience, some insurgent, gentle moves have been designed as ethico-onto-epistemological gestures to experiment on concrete possibilities of fluidity and instability for master narratives. Far from naïvely believing in the “fall”, “end” or “breaking down” of these narratives, defusing them involves instead a positioning on language, narrative and discourse capable of devising provisional and changing patterns of contingent intelligibility which allow for greater exercise of civic sovereignty. Critical, decolonial and queer pedagogies actually constitute the core beliefs which—subjected to the constraints of contingency—are asked to perform this double role of both structuring and shattering grand narratives. It must be noted that this positioning has implied an explicit rejection of the use of passive voice and the (impersonalized) third person in writing this article. The choice of the pronoun “we” constitutes in itself a political gesture –an exercise of rhetoric prerogative, in the terms Segato (2019), Walsh (2011), and Yedaide (2017) propose—. In addition, we affiliate to the thesis which claims that separating the personal and the political constitutes a modern technology: a culture of the non-culture (Haraway, 1997), that is to say, a maneuver that conceals the necessary political bias present in all social products, even and especially when these are self-presented as merely technical. As to our use of English in writing—though apparently contradictory with the epistemic authority we defend—it must be read simply as a gesture manifesting willingness to engage in productive dialogue with peoples who do not speak Spanish. The choice of splitting the word “context” as “con-text” aims at raising awareness regarding the decisive influence that any setting exercises in meaning-making (a site should not be taken as merely ornamental or as landscape/ background but rather as an agent, productive in the construction of meaning, we argue.

Dynamics of chiral solitons driven by polarized currents in monoaxial helimagnets Laliena, Victor; Bustingorry, Sebastián; Campo, Javier Chiral solitons are one dimensional localized magnetic structures that are metastable in some ferromagnetic systems with Dzyaloshinskii–Moriya interactions and/or uniaxial magnetic anisotropy. Though topological textures in general provide a very interesting playground for new spintronics phenomena, how to properly create and control single chiral solitons is still unclear. We show here that chiral solitons in monoaxial helimagnets, characterized by a uniaxial Dzyaloshinskii–Moriya interaction, can be stabilized with external magnetic fields. Once created, the soliton moves steadily in response to a polarized electric current, provided the induced spin-transfer torque has a dissipative (nonadiabatic) component. The structure of the soliton depends on the applied current density in such a way that steady motion exists only if the applied current density is lower than a critical value, beyond which the soliton is no longer stable.

Gabriel Carrasco visita Asunción. Representaciones del pasado y del presente paraguayo en las cartas de un estadístico argentino (1888); Gabriel Carrasco visits Asunción. Representations of the past and present paraguayan in the letters of an argentine statistical (1888) Micheletti, María Gabriela La década de 1880 significó en las naciones del Cono Sur un esfuerzo censal y de inventariado y recolección de objetos, cuyos resultados fueron mostrados en las Exposiciones universales de Barcelona y París. Con relación a ese fin, el experto estadístico Gabriel Carrasco viajó en 1888 por los territorios del noreste argentino, y llegó a Paraguay. Las observaciones que realizó durante su recorrida fueron puestas por escrito en forma de cartas, en las que vertió una serie de imágenes y representaciones sobre el pasado y el presente paraguayo. Este artículo se ocupa de estudiarlas, valiéndose de sus Cartas de viaje como fuentes principales para el análisis. El objetivo es contribuir a explicitar los vínculos entre saberes expertos, observación de la realidad, historia y memoria, y resaltar el carácter performativo y programático presente en el discurso de este estadístico decimonónico.; In the nations of the Southern Cone, the 1880s meant a census effort and inventories and collection of objects, the results of which were shown at the Universal Exhibitions at Barcelona and Paris. In relation to this, the statistical expert Gabriel Carrasco traveled in 1888 through the territories of northeast Argentina and arrived in Paraguay. The observations he made during his tour were put in writing in the form of letters, in which he poured a series of images and representations of the Paraguayan past and present. This article deals with studying them, using his Cartas de viaje as the main sources for analysis. The objective is to contribute to making explicit the links between expert knowledge, observation of reality, history and memory, and to highlight the performative and programmatic character present in the discourse of this nineteenth-century statistician.

Con los ojos puestos en ese continente con forma de arpa: Arquetipos brasileños, búsqueda escrituraria y ristra de experiencias en un relato del intelectual santafesino Alcides Greca (1889-1956); With eyes on that harp-shaped continent: Brazilian archetypes, writing search, and a bunch of experiences in a narrative of the santafesino intellectual Alcides Greca (1889-1956) Antequera, María Florencia La presente comunicación explora la intervención cultural del intelectual santafesino Alcides Greca (1889-1956) que tuvo lugar en 1948 por las tierras del Brasil. Proponemos focalizar, principalmente, en la singular perspectiva que Greca inscribe en Bahianos y bandeirantes (1950), a partir de un catálogo de referencias sensibles (Ette, 2004), propio del viajero cultural (Aguilar y Siskind, 2002). Entendemos que este relato resulta un vehículo escriturario singular para traducir nuevas experiencias sociales (Antequera, 2018) cuyo tópico de interés refulgente es la ciudad. La comunicación consta de tres partes: en la primera, discurrimos en torno a los arquetipos y artefactos urbanos que Greca mensura; en la segunda, analizamos las marcas de escritura autobiográfica que coadyuvan en la búsqueda de una legitimación conjunta de proyecto y sujeto (Antelo, 1998). Por último, examinamos las credenciales que porta Greca en su viaje a Brasil, es decir, sus contribuciones en el campo del urbanismo y el derecho municipal y pasamos revista a los anfitriones que, pródigos en atenciones, lo acompañaron.; This article explores the cultural intervention of the santafesino intellectual Alcides Greca (1889- 1956), developed in 1948, in Brazil. Our work focuses mainly on the singular perspective that Greca implemented in Bahianos and bandeirantes (1950) as the starting point of a catalogue of sensitive references (Ette, 2004), typical of a cultural traveler (Aguilar, Siskind 2002). We believe that this narrative represents a scriptural vehicle which interprets new social experiences (Antequera, 2020a), and whose main topic is the city. This article consists of three parts: the first is a discussion on the urban archetypes and artifacts measured by Greca. The second is an analysis of the autobiographical writing traces that contribute to the search of a combined legitimation of project and subject (Antelo 1998). The third, finally, consists of both an exploration of the credential letters carried by Greca in his journey through Brazil –his contributions to urbanism and municipal law–, and a review of the generous hosts that accompanied him.

Articaine interaction with phospholipid bilayers Prates, Érica Teixeira; Rodrigues da Silva, Gustavo Henrique; Souza, Thais F.; Skaf, Munir S.; Pickholz, Mónica Andrea; de Paula, Eneida Local anesthetics promote analgesia by interacting with excitable membranes. Articaine (ATC) has a unique composition among local anesthetics as it possesses a thiophene instead of the typical phenyl ring. Aiming to characterize the interaction of neutral articaine (nATC) with phospholipid membranes, we have employed a synergistic approach of experimental and computational techniques. Fluorescence measurements supported nATC partitioning into the membranes, since its intrinsic fluorescence anisotropy increased from 0.03 in water to 0.29 in the presence of egg phosphatidylcholine (EPC) liposomes, and the fluorescence of AHBA, a probe that monitors the water-membrane interface, was quenched by nATC. 1H NMR experiments revealed changes in the chemical shifts of articaine and EPC hydrogens after partitioning, and shorter T1 values of nATC hydrogens when inserted into the EPC vesicles. Contacts of nATC and the phospholipid polar head group were inferred from 2D-NOE. Taken together, these results indicate a superficial insertion of the nATC molecules inside EPC bilayers. This conclusion was confirmed by molecular dynamics simulations, which allowed the identification of the key interactions underlying the preferential location of nATC in the bilayer. Contrary to what is often stated (that articaine is a high lipophilic local anesthetic agent) our results place ATC among the hydrophilic ones, such as lidocaine, prilocaine, and mepivacaine, for which the water/membrane interface is the preferred location.

Estrategias de institucionalización de los trabajadores de la economía popular y sus organizaciones: Revisitando la Ley de Emergencia Social (Argentina, 2016) Natalucci, Ana Laura; Mate, Ernesto Pablo El siguiente trabajo aborda la Ley de Emergencia Social (LES) a partir de una serie de interrogantes todavía abiertos, vinculados a la manera en que la LES es clave para avanzar en la institucionalización del sector de la economía popular, qué impacto tuvo en sus trabajadores y por qué se logró su sanción a diferencia de la ley de emergencia laboral. El objetivo de este artículo es analizar la LES como una estrategia de la Confederación de Trabajadores de la Economía Popular (CTEP) orientada a poner en el centro del debate la economía popular como problema público, reivindicar el rol de las organizaciones como entidades representativas del sector y lograr la implementación del Salario Social Complementario como un dispositivo para la creación de prácticas de bienestar. Se sigue en el artículo una metodología cualitativa a partir del análisis de documentos institucionales, entrevistas y observaciones participantes.; The following work addresses the Social Emergency Law (LES) based on a series of still open questions related to the way in which the LES allowed progress in the institutionalization of the popular economy sector, what impact it had on its workers and why its sanction was achieved unlike the labor emergency law. The objective of this article is to analyze the LES as a strategy of the Confederation of Workers of the Popular Economy (CTEP) aimed at putting the popular economy as a public problem at the center of the debate, claiming the role of organizations as representative entities of the sector and achieving the implementation of the Complementary Social Salary as a device for creating wellness practices. The article follows a qualitative methodology based on the analysis of institutional documents, interviews and participant observations.

El diseño institucional del Banco del Sur ¿un modelo superador a la banca multilateral de desarrollo?; The Banco del Sur Institutional Design: A Surpassing Model of Multilateral Development Bank? Molinari, Andrea; Patrucchi, Maria Leticia Los primeros años del siglo XXI mostraron un gran dinamismo en el mapa de actores financieros multilaterales, especialmente de iniciativas sureñas frente al debilitamiento de los actores financieros tradicionales. América del Sur formó parte de una vanguardia en esa agenda promoviendo, entre otras iniciativas, la creación de un nuevo banco regional de desarrollo: el Banco del Sur. Nuestro análisis caracteriza esa iniciativa describiendo y entendiendo sus limitaciones endógenas y exógenas que frenaron su puesta en marcha y poniendo énfasis en las características de su diseño, comparándolo luego tanto con los bancos consolidados que financian la región suramericana (BID y CAF) como con experiencias simultáneas que sí avanzaron (AIIB y NDB). Encontramos en su diseño una estructura de gobernanza más innovadora -sustentada en una legitimidad política que se fue debilitando en la región- pero que además convive con restricciones tradicionales del modelo financiero de este tipo de instituciones.; Over the first years of the 21st century, the map of multilateral financial actors has shown great dynamism, especially with southern initiatives in the face of the weakening of traditional financial actors. South America was part of a vanguard in this agenda by promoting, among other initiatives, the creation of a new regional development bank: the Banco del Sur. Our analysis characterizes this initiative by describing and recognizing its current endogenous and exogenous limitations that stopped its implementation and emphasizing its design features. We compare it with both the consolidated banks that finance the South American region (IDB and CAF) and simultaneous prospering experiences (AIIB and NDB). We find in the Banco del Sur design a more innovative governance structure based upon a weakening regional political legitimacy that, however, coexists with traditional restrictions of the financial model of this type of institutions.

TIC y gobierno electrónico: Cooperación entre Corea del Sur y América del Sur; ICT and e-government: Cooperation between South Korea and South America Bavoleo, Bárbara Inés Este trabajo aborda la estrategia de desarrollo de las industrias de tecnologías de información y comunicación de la República de Corea desde los planes gubernamentales — que deriva en su posicionamiento como uno de los países de vanguardia en términos de gobierno electrónico y que ubica al sector como central para el crecimiento de su economía—, así como la exportación de sistemas o componentes de gobierno electrónico —entendido en un rango amplio que incluye: asesoramiento, diseño, software, hardware, entre otros— a países latinoamericanos. Se sostiene, aquí, que la cooperación intergubernamental tiene el objetivo de facilitar el ingreso de empresas surcoreanas a los mercados de América Latina.; This paper addresses the development strategy of the information and communication technology industries of the Republic of Korea from the point of view of governmental policies —which derives in its position as one of the vanguard countries in terms of electronic government and which places the sector as central to the growth of its economy—, and also addresses the export of systems or components of electronic government —this understood within a wide range that includes: consultation, design, software, hardware, among others— to Latin American countries. It is argued here that intergovernmental cooperation aims to facilitate the entry of South Korean companies into Latin American markets.