Highly selective copper nanoparticles for the hydrogenation of,-unsaturated aldehydes in liquid phase Gutierrez, Victoria Soledad; Nador, Fabiana Gabriela; Radivoy, Gabriel Eduardo; Volpe, María Alicia Unsupported copper nanoparticles (CuNPs), 3–4 nm in size, are obtained from the reduction of the corresponding metal chloride through an electron transfer from a lithium arenide. CuNPs are tested for the liquid phase hydrogenation of cinnamaldehyde in batch conditions by using H2. High activity and selectivity to cinnamyl alcohol (87%, at high conversion) are reached. When CuNPs are supported on MCM-41 and on high surface area CeO2, TEM and XRD characterization shows that the nanometric size of copper is retained. For the hydrogenation of crotonaldehyde or of cinnamaldehyde, CuNPs/MCM-41 and CuNPs/CeO2 are less active and less selective than unsupported nanoparticles. However the selectivity levels reached by these catalysts are higher than those obtained over noble metal (Au and Pt) based catalysts, tested under the same reaction conditions. The catalytic properties of supported and unsupported CuNPs would be related to the nanometric size of copper

Hydration of Barium Monohydroxide in (H2O)1-3 Clusters: Theory and Experiment Cabanillas Vidosa, Ivan; Rossa, Maximiliano; Pino, Gustavo Ariel; Ferrero, Juan Carlos; Cobos, Carlos Jorge The ionization energies (IEe´s) of small BaOH(H2O)m clusters (m = 1-3), as generated in a laser vaporization-supersonic expansion source have been determined by laser photoionization experiments over the 3.65?4.55 eV energy range. Complementary ab initio studies show that the IEe´s are in good agreement with computed adiabatic ionization energies, and that BaOH(H2O)m structures with a direct coordination of the Ba atom to water molecules are favored over those that are characterized by H-bonded networks involving H2O molecules and the OH group of BaOH. Additional calculations have been performed on the hydration energies for the most stable isomers of the relevant BaOH(H2O)1-3 clusters. A comparison is made between the closed-shell title system and the results of related theoretical studies on the open-shell alkali monohydroxides, which allows for an interpretation of the opposite trends that are found in the cluster size dependence of the vertical ionization energies for both series of systems, and highlights the role of the BaOH unpaired electron in its ionization process. Altogether, the present evidence suggests for the initial steps of the BaOH hydration process to be dominated by electrostatic and polarization interactions between the Ba+ and OH? ion cores, which become both increasingly solvated upon sequential addition of water molecules.

Critical behavior of self-assembled rigid rods on two-dimensional lattices: Bethe-Peierls approximation and Monte Carlo simulations López, Luis Gonzalo; Linares, D. H.; Ramirez Pastor, Antonio Jose; Stariolo, D. A.; Cannas, Sergio Alejandro The critical behavior of adsorbed monomers that reversibly polymerize into linear chains with restricted orientations relative to the substrate has been studied. In the model considered here, which is known as self-assembled rigid rods (SARRs) model, the surface is represented by a two-dimensional lattice and a continuous orientational transition occurs as a function of temperature and coverage. The phase diagrams were obtained for the square, triangular, and honeycomb lattices by means of Monte Carlo simulations and finite-size scaling analysis. The numerical results were compared with Bethe-Peierls analytical predictions about the orientational transition for the square and triangular lattices. The analysis of the phase diagrams, along with the behavior of the critical average rod lengths, showed that the critical properties of the model do not depend on the structure of the lattice at low temperatures (coverage), revealing a quasi-one-dimensional behavior in this regime. Finally, the universality class of the SARRs model, which has been subject of controversy, has been revisited.

The immature stages of Phylloicus lituratus (Trichoptera: Calamoceratidae) with new records of Phylloicus and Banyallarga species in northwestern Argentina and southern Bolivia Rueda Martin, Paola Alejandra Phylloicus lituratus Banks 1920 larva and pupa were associated. It is a new record for Argentina and represents the most austral record for the species. New records of other Calamoceratidae species are provided also from northwestern Argen-tina and southern Bolivia. Banyallarga (B.) argentinica Flint 1983 is recorded for the first time for Bolivia; B. (B.) loxana (Navás 1934) and B .(B.) yungensis Flint 1983 are both newly recorded from Salta province in northwestern Argentina. Illustrations of male genitalia of all species and of immature stages of P. lituratus are included. Presence of a Banyallarga larva in a leaf case suggests a need to change some larval keys used to identify the two endemic genera of Neotropical Calamoceratidae.

Some remarks on distributive semilattices Celani, Sergio Arturo; Calomino, Ismael Maria In this paper we shall give a survey of the most important characterizations of the notion of distributivity in semilattices with greatest element and we will present some new through annihilators and relative maximal filters. We shall also simplify the topological representation for distributive semilattices given in cite{Celani} and show that the meet-relations are closed under composition. So, we obtain that the $DS$-spaces with meet-relations is a category dual to the category of distributive semilattices with homomorphisms. These results complete the topological representation presented in cite{Celani} without the use of ordered topological spaces. Finally, following the work of G. Bezhanishvili and R. Jansana in cite{Bezhanishvili-Jansana II}, we will prove a characterization of homomorphic images of a distributive semilattice $A$ by means of family of closed subsets of the dual space endowed with a lower Vitories topology.

Higher-capacity lithium ion battery chemistries for improved residential energy storage with micro-cogeneration Darcovich, K.; Henquín, Eduardo Rubén; Kenney, B.; Davidson, I. J.; Saldanha, N.; Beausoleil Morrison, I. Combined heat and power on a residential scale, also known as micro-cogeneration, is currently gaining traction as an energy savings practice. The configuration of micro-cogeneration systems is highly variable, as local climate, energy supply, energy market and the feasibility of including renewable type components such as wind turbines or photovoltaic panels are all factors. Large-scale lithium ion batteries for electrical storage in this context can provide cost savings, operational flexibility, and reduced stress on the distribution grid as well as a degree of contingency for installations relying upon unsteady renewables. Concurrently, significant advances in component materials used to make lithium ion cells offer performance improvements in terms of power output, energy capacity, robustness and longevity, thereby enhancing their prospective utility in residential micro-cogeneration installations. The present study evaluates annual residential energy use for a typical Canadian home connected to the electrical grid, equipped with a micro-cogeneration system consisting of a Stirling engine for supplying heat and power, coupled with a nominal 2 kW/6 kW h lithium ion battery. Two novel battery cathode chemistries, one a new Li–NCA material, the other a high voltage Ni-doped lithium manganate, are compared in the residential micro-cogeneration context with a system equipped with the presently conventional LiMn2O4 spinel-type battery.

High temperature far-infrared dynamics of orthorhombic NdMnO3: emissivity and reflectivity Massa, Nestor Emilio; del Campo, Leire; De Sousa Meneses, Domingos; Echegut, Patrick; Martínez Lope, María Jesús; Alonso, José Antonio We report on near normal far- and mid-infrared emission and reflectivity of NdMnO3 perovskite from room temperature to sample decomposition above 1800 K. At 300 K the number of infrared active phonons is in close agreement with the 25 calculated for the orthorhombic D16 2h–Pbnm (Z = 4) space group. Their number gradually decreases as we approach the temperature of orbital disorder at ∼1023 K where the orthorhombic O0 lower temperature cooperative phase coexists with the cubic orthorhombic O. At above ∼1200 K, the three infrared active phonons coincide with that expected for cubic Pm-3m (Z = 1) in the high temperature insulating regime. Heating samples in dry air triggers double exchange conductivity by Mn3+ and Mn4+ ions and a small polaron mid-infrared band. Fits to the optical conductivity single out the octahedral antisymmetric and symmetric vibrational modes as the main phonons in the electron–phonon interactions at 875 K. For 1745 K, it is enough to consider the symmetric stretching internal mode. An overdamped defect induced Drude component is clearly outlined at the highest temperatures. We conclude that rare earth manganite eg electrons are prone to spin, charge, orbital, and lattice couplings in an intrinsic orbital distorted perovskite lattice, favoring embryonic low energy collective excitations.

La poética del extrañamiento: el dominio incaico como delegación, pérdida, captura, entrega y negación del ser. Un repaso de la arqueología de alta montaña surandina Mignone Gambetta, Pablo Ignacio La arqueología de alta montaña busca perfilarse como una disciplina autónoma con sus propias metodologías, aproximaciones teóricas y técnicas. Para ello ha creado una forma de estudiarel pasado incaico descuidando las relaciones interétnicas suscitadas durante su expansionismo y el rol de las comunidades no estatales. La arqueología a secas es entendida por esta corriente como una actividad cómoda y fácil, mientras que la especialidad de montaña, a fuerza de piernas, es la única cuyo desarrollo aporta no al estudio del pasado en sí, sino a la relación entre los “incas y la montaña”, de la misma forma en que se suceden uno a uno escritos donde lo que resalta es la relación íntima que se establece entre “el arqueólogo con la montaña”, el “arqueólogo con el inca” y, en conclusión necesaria, “del arqueólogo consigo mismo”. Planteamos luego de un estudio de las principales obras de referencia de esta especialidad en Argentina, que la “arqueología de alta montaña” es, en algunos casos, antes que un estudio del pasado, un reflejo del exitismo del montañismo del presente, situando la temática dentro del campo de los deportes extremos antes que de los desafíos intelectuales de la arqueología o de la antropología.

Engineering Pseudomonas protegens Pf-5 for Nitrogen Fixation and its Application to Improve Plant Growth under Nitrogen-Deficient Conditions Setten, Lorena María; Soto, Gabriela Cynthia; Mozzicafreddo, Matteo; Fox, Ana Romina; Lisi, Christian Daniel; Cuccioloni, Massimiliano; Angeletti, Mauro; Pagano, Elba; Díaz Paleo, Antonio Horacio; Ayub, Nicolás Daniel Nitrogen is the second most critical factor for crop production after water. In this study, the beneficial rhizobacterium Pseudomonas protegens Pf-5 was genetically modified to fix nitrogen using the genes encoding the nitrogenase of Pseudomonas stutzeri A1501 via the X940 cosmid. Pf-5 X940 was able to grow in L medium without nitrogen, displayed high nitrogenase activity and released significant quantities of ammonium to the medium. Pf-5 X940 also showed constitutive expression and enzymatic activity of nitrogenase in ammonium medium or in nitrogen-free medium, suggesting a constitutive nitrogen fixation. Similar to Pseudomonas protegens Pf-5, Pseudomonas putida, Pseudomonas veronii and Pseudomonas taetrolens but not Pseudomonas balearica and Pseudomonas stutzeri transformed with cosmid X940 showed constitutive nitrogenase activity and high ammonium production, suggesting that this phenotype depends on the genome context and that this technology to obtain nitrogen-fixing bacteria is not restricted to Pf-5. Interestingly, inoculation of Arabidopsis, alfalfa, tall fescue and maize with Pf-5 X940 increased the ammonium concentration in soil and plant productivity under nitrogen-deficient conditions. In conclusion, these results open the way to the production of effective recombinant inoculants for nitrogen fixation on a wide range of crops.

Modelo de evaluación de gestión de residuos industriales aplicado en arenas descartadas de fundición; Industrial waste management evaluation model applied to discarded foundry sands Miguel, Roberto Esteban; Porta, Atilio Andrés; Banda Noriega, Roxana Bettina Las arenas descartadas de fundición (ADF), residuo generado por las fundiciones, son dispuestas en vertederos controlados y no controlados. El objetivo del trabajo fue analizar químicamente las arenas y determinar la modalidad adecuada de disposición al aplicar el modelo de evaluación de manejo de residuos industriales bajo diferentes condiciones climáticas. Se colectaron 12 muestras y se sometieron a ensayos de lixiviación para determinar el contenido de fenoles y metales pesados; 10 de las muestras presentaron concentraciones inferiores a lo establecido en la Ley de Residuos Peligrosos. El modelo determinó que en áreas con extrema vulnerabilidad a la contaminación del recurso hídrico subterráneo, bajo condiciones de clima subhúmedo y húmedo, deben utilizarse vertederos con impermeabilización compuesta para disponer las ADF con concentraciones de fenoles mayores 0,001 mg.L-1, y para las ADF que provienen del sistema alquídico uretánico con Pb como constituyente.; Waste foundry sands (WFS), discarded material generated by metal foundries, are disposed in either controlled or uncontrolled landfills. The present study was aimed to chemically analyze the sands and assess their disposal by means of an evaluation model of industrial waste under different climate conditions. Twelve samples were collected and subjected to leach tests to determine phenols and heavy metals concentrations. Ten of them showed concentrations below the regulatory limits of the Hazardous Waste Act. The model found that in areas with extreme vulnerability to pollution of groundwater resources, under humid climate conditions, composite lined landfills should be used to dispose the WFS with concentrations of phenols higher than 0.001 mg.L-1, and for WFS that use urethane alkyd system with Pb as a constituent.

The worker´s voice in post-1968 Argentine political documentary Mestman, Mariano Ernesto In the late 1960s, the political cinema of Latin America gave relevance and a prominent place to the voices of the people. In the case of Argentina, the worker's voice increased its presence in the films during a period of militant cinema that began in 1968 with the legendary La hora de los hornos [The Hour of the Furnaces]. Later films also incorporated the voice of the workers who played a central part in the largest popular uprising of the period, the Cordobazo (1969) and those of the militants in the so-called Peronist Resistance (1955 onwards). Amid criticisms of ‘the limits of direct cinema’ and the proposal of ‘giving voice to the people’ or of directly ‘seizing the right to speak,’ the worker's voice began to share the textual authority of films, an authority hitherto given almost exclusively to an omnipresent voice-over, typical of one important documentary tradition. If in many cases the voices of the people were connected, if not subordinated, to the theses of the filmmakers, they were nevertheless elaborated in all their complexity, with their place negotiated into the ensemble of the film's textual authority. This article analyses various ways of configuring working class voices/testimonies (those of the workers, the farm workers, and the Resistance), and considers the dialogues and negotiations between these voices and the revolutionary theses and imaginaries that were widespread in this period, as put forward in films concerning social protest and class identity in Argentina.

Análisis de la producción científica latinoamericana en medicina; Analysis of Latin American scientific output in medicine Mc Loughlin, Santiago; Rodriguez Granillo, Gaston Alfredo En la última década se produjo un aumento del gasto en investigación en países en vías de desarrollo. Ante la ausencia de análisis recientes, decidimos evaluar la producción científica en medicina de Latinoamérica y su correlación con variables demográficas y económicas. Analizamos el número total de documentos producidos en cada país y su índice H. Realizamos un subanálisis de los 4 países con mayor índice H y analizamos la correlación existente entre la población de cada país, su PBI y el gasto en investigación. Brasil está en primer lugar en relación con el índice H y número total de documentos, seguido por la Argentina y México, en ese orden. El crecimiento de documentos publicados fue de 530% para Brasil, 331% para Chile, 267% para Argentina y 239% para México. Los 4 países presentaron aumentos de su participación en la producción mundial. Brasil presenta mayor inversión porcentual destinada a investigación, comparado con Argentina y México, mientras que la Argentina supera en inversión porcentual a México. Brasil, Argentina, México y Chile lideran la producción científica médica regional, con importante crecimiento de su producción. Este crecimiento podría encontrarse asociado a la situación económica regional y al aumento observado de la inversión en investigación. La influencia de la región a nivel mundial se encuentra en aumento aunque continúa siendo limitada.; Introduction. Over the last decade the global spending on research, the number of researchers and the number of scientific publications have been markedly increased. This increment was especially significant in developing countries. Therefore, considering the absence of recent evaluations, we decided to study the scientific output of Argentina in medicine as compared with other Latin American countries as well as the possible correlations between scientific output and demographics or economical variables. Methods. The countries included in our study were: Argentina, Bolivia, Brasil, Chile, Colombia, Ecuador, Mexico, Paraguay, Peru, Uruguay and Venezuela. We analyzed the total number of documents produced in each country for the period 1996-2010 and its H index, in the category “medicine” and within the categories available for each specialty. Then, we performed a sub-analysis of the 4 countries with the highest H index and analyzed the correlation between the population of each country, GDP and the research expenditures. Results. Brazil ranks first in relation to the H index and total number of papers published, followed by Argentina and Mexico respectively. The increase of papers published between 1996 and 2010 was of 530% for Brazil, 331% for Chile, 267 % for Argentina and 239% for Mexico. The 4 four countries increased their share in total world production. Brazil presents a higher research spending, as compared with Argentina and Mexico, while Argentina investment exceeds the Mexican. The GDP showed significant correlations with the H index and the total number of produced documents by each country. Conclusion. Brazil, Argentina, Mexico and Chile lead the regional scientific output and presented considerable increments in their production over the past fifteen years. This growth may be associated with the regional economic situation and the observed increase investment in research and development. Moreover, the influence of the region in global production is increasing but still limited.

Libertad Demitrópulos : Una narrativa de los vencidos. En torno a Sabotaje en el álbum familiar Abbate, Florencia El presente trabajo analiza la novela Sabotaje en el álbum familiar, de Libertad Demitrópulos, procurando develar los diferentes modos en que el texto asume una serie de posiciones descentradas en relación a géneros literarios y regiones geográficas, así como también con respecto a los sujetos-protagonistas y a sus sistemas de valores. El análisis procura visibilizar una constelación definida por la elección de géneros tenidos por "menores", una perspectiva narrativa "provinciana", y la mirada crítica del orden dominante mediante una pluralidad de miradas subalternas que ponen en escena una triple opresión: de clase, de género y étnica.; This article analyzes Libertad Dimitrópulos’s novel Sabotaje en el árbol familiar, attempting to unveil the different ways in which the text assumes a series of decentered positions with regards to literary genres and geographic regions, as well as its protagonist-subjects and their value-systems. The analysis aims to make visible –in the work of this female author who has received small critical attention- a constellation defined by the choice of literary genres usually held as “lesser”, a “provincial” narrative perspective and a critical gaze towards the dominant social order. All of which find expression through a plurality of subaltern voices who stage a triple oppression : of class, gender and ethnic, configuring in this way a narrative that would assume an antagonistic form to that of the “victors’ epic”.

Puesta en valor de la Reducción Jesuítica de Santa Ana: proceso de apoyatura arqueológica Roca, Maria Victoria En este artículo se relatarán algunas de las instancias relativas a la Puesta en Valor de la Reducción de Santa Ana (Misiones), con especial énfasis en el proceso de Apoyatura Arqueológica llevado adelante por quien escribe y bajo la Dirección de la Licenciada Ruth A. Poujade. La intervención, que tuvo lugar entre 2009 y 2010, se realizó con recursos provenientes del BID (Crédito 1648/OC-AR. Programa de mejora de Competitividad del sector Turismo en Áreas Piloto), a través de la Secretaría de Turismo de la Nación.

Las políticas públicas y las sexualidades Pecheny, Mario Martín En este texto discuto la construcción conflictiva de cuestiones sexo-políticas como técnicas, en particular en el área de la salud. A largo plazo esta construcción termina por despolitizar y desexualizar. Por despolitización entiendo la sustracción de un conflicto social de su inserción en el marco de condiciones estructurales de vulnerabilidad y desigualdad y en procesos históricos, reduciéndolo a una cuestión individual y resoluble técnicamente. Es así que cuestiones, por ejemplo, relativas a las relaciones desiguales de género, tales como el aborto, son tematizadas y reducidas a problemas de salud. Eso lleva a impasses políticos que terminan por no resolver políticamente las cuestiones y reproducir el statu quo.

Il camionista ghost rider de Van de Sfroos y el viajante fantasma de La Rioja: itinerarios de una matriz narrativa Palleiro, Maria Ines Me propongo analizar la dinámica entre oralidad, escritura y recreación musical en distintos recorridos de una matriz folklórica, constituidos por una versión oral argentina y otra de un cantautor italiano. El trabajo se inscribe en un proyecto avalado por el Consejo Nacional de Investigaciones Científicas y Técnicas de Argentina cuyo eje es la narrativa tradicional de la provincia argentina de La Rioja, confrontada con la de otros contextos americanos y europeos. Considero la narración como principio cognitivo de organización secuencial de la experiencia, deconstruible en itinerarios no secuenciales similares a los de un hipertexto virtual. Caracterizo el relato folklórico como expresión espontánea de la identidad de un grupo, elaborada estéticamente en un formato narrativo, y tengo en cuenta la importancia de la experiencia vital del narrador en la organización de los relatos. Defino la matriz como un conjunto de rasgos temáticos, compositivos y estilísticos comunes a un conjunto de versiones, identificados mediante la confrontación intertextual. Comparo una versión oral que recogí en La Rioja con la composición ?Il camionista ghost rider? del cantautor italiano Davide Van de Sfroos, que tienen como base matrices folklóricas como ?El trato con el diablo? y ?El encuentro con la Muerte? , reelaboradas como un encuentro con lo sobrenatural en una ruta.

Relocalizar el conocimiento. ¿Qué es el conocimiento? Haber, Alejandro Antaño el mundo de aquellos que se dedican al conocimiento parecía ser un mundo algo separado, aislado del mundo habitual, cotidiano, en una palabra, mundano. La imagen de los científicos en guardapolvos blancos rodeados de pipetas y tubos de vidrio, o bien encerrados en polvorientas bibliotecas en busca de viejas escrituras, parece haber quedado en el recuerdo. Hoy día la ciencia se promulga aplicada, se piensa para la sociedad –cualquier cosa que ella sea– y se mide por su utilidad. La ciencia ha de ser, entonces, aplicada, el conocimiento debe ser útil, los científicos han de acudir en solución de las demandas sociales. Entre sociedad civil y ciencia, el estado asume las demandas, planifica las respuestas y despliega las acciones. Tal el esquema que, al menos en teoría, vincula al estado, la ciencia y la sociedad. Ya asociado ya paralelo al estado, es con frecuencia el mercado la fuerza que vincula conocimiento y sociedad. La creación de conocimiento cobra sentido, así, en el circuito que, directa o indirectamente, lo lleva a reconfigurarse en política pública o mercancía. La infelicidad, la pobreza, la enfermedad, la violencia, no serían sino corrupciones de semejante virtuoso circuito. Denominamos disciplina y posdisciplina a las caracterizaciones de la ciencia respectivamente orientada a la verdad o al bien común, como fuera que aquella o este se definan, consideren o representen.

La cobertura mediática de la estatización de YPF en la prensa argentina: un análisis comparativo entre los principales diarios del país Koziner, Nadia; Zunino, Esteban El 16 de abril de 2012 el gobierno argentino anunció la decisión de expropiar el 51% de las acciones de YPF S.A. pertenecientes a la petrolera española Repsol. El Poder Ejecutivo esgrimió como argumentos centrales la necesidad de enfrentar una política de vaciamiento ejercida por la controlante y de recuperar la soberanía energética mediante el manejo estatal del petróleo. YPF, además de ser la mayor empresa de Argentina, posee una participación mayoritaria en el mercado de combustibles en el país. Días más tarde, la medida fue ratificada por el Congreso Nacional. La noticia penetró rápidamente en la agenda de los principales medios nacionales e internacionales. El objetivo general del presente trabajo es analizar la cobertura informativa del proceso de estatización de YPF en la prensa gráfica argentina. A partir de un análisis de contenido de las noticias sobre el caso publicadas en portada por los diarios Clarín, La Nación y Página/12, se pretende determinar: 1) la frecuencia informativa de la estatización de YPF; 2) la jerarquía de este issue para cada medio y 3) la valoración de la noticia en las coberturas de cada matutino. El presente trabajo se enmarca en la perspectiva teórica de la Agenda Setting.; On April 16th 2012 the Argentine government announced the decision to expropriate 51% of the shares of YPF S.A. belonging to the Spanish oil company Repsol. The Executive Branch put forward the need to face the emptying policy exercised by the parent company and the pressing concern to regain its energy sovereignty through state control of oil, as the most important arguments. Besides being the largest company in Argentina, YPF owns a majority stake in the fuel market in the country. A few days later, the measure was ratified by National Congress. The news quickly entered the agenda of major national and international media. The aim of this paper is to analyze the coverage of the nationalization process of YPF in the Argentine print media. From the content analysis on the news published on covers by Clarín, La Nación and Página/12, this work intends to determine: 1) the information frequency of the nationalization of YPF, 2) the hierarchy of this issue for each newspaper and 3) the evaluation of the news in the coverage made by each of the newspapers. This paper is written within the context of the Agenda Setting theoretical perspective.

Los territorios urbano-regionales como medio de innovación: San Luis, ¿laboratorio ciudadano?; Urban-regional territories as a means of innovation San Luis, Argentina: a citizens’ laboratory? Finquelievich, Susana; Feldman, Patricio Julian; Fischnaller, Celina El artículo consiste en una reflexión crítica sobre los resultados de tres investigaciones de campo sucesivas (2008-2009, 2009-2010 y 2011-2013) que analizan los alcances e impactos del programa San Luis Digital (SLD) en la provincia de San Luis, Argentina, promovido por el gobierno provincial, con la participación de la Universidad de La Punta, de empresas de base tecnológica, y de organizaciones no gubernamentales (ONG). La pregunta que guía este trabajo es la siguiente: ¿Es San Luis un laboratorio ciudadano a gran escala? El estudio es de carácter exploratorio y cuali-cuantitativo. Comprende varias actividades: un estudio documental de teorías y de las mejores prácticas a nivel internacional sobre el impacto de las TIC en los usos y hábitos de las personas; la elaboración de indicadores de evaluación cualitativos y cuantitativos; un diseño muestral de poblaciones e individuos; el diseño de las entrevistas; el trabajo de campo (dos viajes a cada localidad estudiada); y el procesamiento y análisis de la información. Los alcances e impactos se estudiaron sobre toda la provincia, por medio de entrevistas a responsables, participantes y beneficiarios de SLD. El trabajo concluye que la provincia de San Luis puede considerarse un laboratorio ciudadano implementado verticalmente, en el que la participación proactiva de los ciudadanos en los procesos de innovación está prevista en el corto plazo.; The paper is a critical reflection on the results of three successive field researchs (2008-2009, 2009-2010 and 2011-2013) that study the scope program impacts of the San Luis Digital program (SLD) in Argentina, sponsored by the provincial government of San Luis, with the participation of the University of La Punta, technology companies and non-governmental organizations (NGOs). The question that guides this work is the following: Is the province of San Luis a large-scale citizens’ laboratory? This study is exploratory and boasts a qualitative-quantitative approach. It includes several activities: a documentary study of theories and good international practices that illustrate the impact of ICT on the uses and habits of citizens; the development of indicators of qualitative and quantitative assessment; a sample design of populations and individuals; different field works (two trips to each location) and the subsequent processing of information. Outcomes and impacts were studied over the whole province, through interviews with members, participants and beneficiaries of SLD. This paper concludes that the province of San Luis can be considered a large-scale citizens’ laboratory where the proactive participation of citizens in the innovation process is planned for the short term.

The anterior cingulate cortex: an integrative hub for human socially-driven interactions Lavin, Claudio; Melis, Camilo; Mikulan, Ezequiel Pablo; Gelormini Lezama, Carlos; Huepe, David; Ibáñez Barassi, Agustín Mariano The activity of the anterior cingulate cortex (ACC) has been related to decision-making (Gehring and Willoughby, 2002; Sanfey et al., 2003; Mulert et al., 2008), socially-driven interactions (Sanfey et al., 2003; Rigoni et al., 2010; Etkin et al., 2011), and empathy-related responses (van Veen and Carter, 2002; Gu et al., 2010; Lamm et al., 2011). We present a perspective of how to interpret the evidence of ACC involvement in these three processes, propose an ACC integrative function, and provide a methodological pathway to study decision making, empathy, and social interaction in a combined experimental approach.