Extending the analysis on the best solar activity proxy for long-term ionospheric investigations Zossi, Bruno Santiago; Medina, Franco Dario; Tan Jun Rios, María Gloria; Lastovicka, Jan; Durán, Trinidad; Fagre, Mariano; de Haro Barbás, Blas Federico; Elias, Ana Georgina Based on a previous study to select the best solar activity proxy for foF2 modelling, we expand the analysis to include 24 h time span, increase the spatial coverage by considering additional ionospheric stations, and update the analysis to 2021. Annual means of foF2 are analysed for 12 selected stations from Europe, Asia and Oceania, with high-quality data covering the period 1978–2021 in most of the cases, including two of the three European stations of the previous study. The same four solar proxies were used: F10.7, F30, MgII and HeII, which, based on the high linear correlation between each of them and foF2, serve to model this ionospheric parameter through a linear regression. The results of our comparative analysis, extended to more stations, all the hours and updated time series, agree with previous works, with MgII and F30 being the best solar proxies for foF2 modelling, while HeII is found to be the least effective for this purpose. The importance of the solar proxy selection to model foF2 for filtering purposes to later estimate long-term trends is highlighted considering that different solar proxies applied might result in somewhat different foF2 long-term trend values.

Calibration of time transfer systems in time and frequency laboratories de la Pina, Carla Ligia; Pasquaré, Alfredo Oscar; Luna, D. A.; Arias, Elisa Felicitas; Brunini, Claudio Antonio; Galván, Romina de Los Angeles El siguiente trabajo aborda la calibración de dos institutos argentinos que participan del calculo del Tiempo Universal Coordinado (UTC) en el Bureau International des Poids et Mesures (BIPM). Las medidas de tiempo y frecuencia son parámetros indispensables para la astronomía y la geodesia y como tales requieren de una completa caracterizacion de la incertidumbre.

Thermal Gelation of Proteins from Cajanus cajan Influenced by pH and Ionic Strength Fernández Sosa, Eliana Isabel; Chaves, María Guadalupe; Peyrano, Felicitas; Quiroga, Alejandra Viviana; Avanza, María Victoria Cajanus cajan [pigeon pea (PP)] is an important legume crop for subsistence agriculture and its seeds are an alternative plant-based protein source. PP protein isolates (PPI) are able to form heat-induced gels that could be used for food applications. The aim of this work was to study the infuence of pH (2.1, 3.9, 6.3, and 8.3) and ionic strength (μ) (0.10 and 0.54) on thermal stability and thermal gelation of PPI obtained by alkaline extraction (pH 8.0) and isoelectric precipitation. Thermal stability of PPI changed with pH variation at low ionic strength (μ=0.10), decreasing this dependence with the increase of ionic strength (μ=0.54). At μ=0.10, gelation capacity of PPI was lower at pH 2.1 and pH 3.9. These gels presented a coarse network, which entails low WHC. At pH 6.3 and pH 8.3, gels showed a solid-like character with a compact and homogeneous matrix, with better WHC. At μ=0.54, gel formation was favoured at pH 2.1 and pH 3.9. G′ 20/G′ 95 ratio values and diferential solubility results suggest that hydrogen bonds and electrostatic interactions could play an important role in gel formation at pH 6.3 and pH 8.3.

Transversalización del género y desarrollo agropecuario: Aportes para el abordaje sistémico desde un enfoque psicosocial; Gender mainstream and agricultural development: Contributions towards a systemic approach from a psychosocial perspective Conti, Santiago; Sánchez Iudicello, Suzette Melisa La agenda de género viene siendo incorporada a las políticas en las ruralidades latinoamericanas. Sin embargo, se identifica en ellas un sesgo en relación con comprender el género como un problema del otro: de la población rural. El artículo procura contribuir a las políticas del desarrollo agropecuario sosteniendo que la transversalización del género debe atender a las dinámicas institucionales y de las prácticas de intervención territorial. Se propone un modelo analítico psicosocial desde un abordaje sistémico para identificar desigualdades de género en dinámicas institucionales y territoriales. Con metodologías cualitativas de observación participante, registros de campo y una encuesta abierta, se generaron datos y analizaron resultados para comprender los obstáculos en términos de género en el Instituto Nacional de Tecnología Agropecuaria (INTA). Posteriormente, se discuten los resultados y características del modelo propuesto; finalmente, se concluye destacando aportes, limitaciones y desafíos para la transversalización de género en el ámbito agropecuario.; The gender agenda is being incorporated into rural policies in Latin American. However, a bias is identified in them in relation to understanding gender as one problem of the other: of the rural population. This paper aims to contribute to agricultural development policies, based on the argument that gender mainstreaming must address both institutional dynamics and territorial intervention practices. For this purpose, we propose a psychosocial analytical model from a systemic approach to identify gender inequalities in institutional and territorial dynamics. From a qualitative perspective, data were generated through participant observation, field records and a survey. Results were analyzed to understand the obstacles associated to gender gaps at the National Institute of Agriculture Technology (INTA). Subsequently, the main results and characteristics of the proposed model are discussed; Finally, we conclude by highlighting the proposed model’s contributions and limitations, and addressing challenges for the gender mainstreaming agenda in agricultural development.

The Critical Role of Ligand Flexibility on the Activity of Free and Immobilized Mn Superoxide Dismutase Mimics Richezzi, Micaela; Signorella, Sharon; Palopoli, Claudia Marcela; Pellegri, Nora Susana; Hureau, Christelle; Signorella, Sandra Rosanna In low-molecular-weight Mn superoxide dismutase (SOD) mimics, the ligand plays a key role in tuning the reactivity of the metal center with O2•−. We used three ligands differing in their donor sites, flexibility and/or charge, to compare the redox properties and SOD activity of the resulting Mn complexes: 1,3-bis[(pyridin-2-ylmethyl)(propargyl)amino]propane (pypapn), 1,3-bis(pyridin-2-ylmethyleneamino)propane (py2pn) and 1,4-bis(salicylidenamino)butane (H2salbn). These ligands afford Mn complexes that, in aqueous solution, exist as mononuclear species [Mn(II)(pypapn)(H2O)2]2+, [Mn(II)(py2pn)(H2O)2]2+ and [Mn(III)(salbn)(H2O)2]+. The relative reactivity of these compounds with O2•− at pH 7.8, [Mn(pypapn)(H2O)2]2+ > [Mn(salbn)(H2O)2]+ > [Mn(py2pn)(H2O)2]2+, is independent of the redox potential but strongly depends on the ligand flexibility which becomes a critical feature when the reaction occurs through an inner-sphere electron-transfer mechanism. Immobilization was used to isolate and protect the catalyst from dissociation or dimerization during catalysis. [Mn(pypapn)(H2O)2]2+, with the alkyne group, was covalently grafted to azide functionalized mesoporous silica through click chemistry, while [Mn(py2pn)(solv)2]2+ and [Mn(salbn)(solv)2]+ were encapsulated in SBA-15 mesoporous silica through ionic exchange. The retention or enhancement of the SOD activity and the improved stability of the covalently attached catalyst and the doubly charged complex encapsulated in the silica pores, make them suitable for use in aqueous media.

Una nota sobre la descripción de la ira de Melibea y su relación con el De ira de Séneca; A note on the description of Melibea’s ire and its relationship with Seneca’s De ira Fuentes, Juan Héctor Tomando como referencia los estudios de FothergillPayne (1986, 1988, 1993) sobre la presencia de Séneca en La Celestina, se ofrece un análisis detallado de la descripción de la ira de Melibea del Acto VI, escena 2, en relación con la tradición estoica de la infamatio irae y, de modo particular, con los retratos del airado del libro I, 1, 2-4 del De ira según la traducción castellana medieval dedicada a Sancho IV. Dicha traducción tuvo una importante difusión durante el siglo XV y su uso por parte del autor de la interpolación del Acto VI es absolutamente coherente con una intencionalidad docente y moral de La Celestina.; Following Fothergill-Payne's studies (1986, 1988, 1993) on the presence of Seneca in La Celestina, a detailed analysis of the description of the ire of Melibea in Act VI, scene 2, is offered. This analysis relates this description to the Stoic tradition of the infamatio irae and, in particular, to the portraits of the angry man from book I, 1, 2-4 of De ira, according to the medieval Spanish translation dedicated to King Sancho IV. This translation circulated widely during the fifteenth century. Its use by the author of the interpolation of Act VI reinforces the didactic and moralizing intention of the work in general.

Environmental Effects of Sport Horse Production Farms in Argentina Vaccaro, Mariana Marcela; Volpedo, Alejandra; García Liñeiro, José Alberto; Fernandez Cirelli, Alicia Argentina is one of the countries that exports animals for equestrian sports. This paperanalyzes the environmental effects of sport horse production farms in Argentina and proposes actionsto minimize the environmental effects of this type of production. Twenty-six sport horse productionfarms in the province of Buenos Aires were studied. The proximity of the farms to a surface waterbody, the destination of the stall bedding, management practices and whether they receive veterinary advice were the characteristics analyzed in relation to feed, its composition and water consumption according to the performance of the animals. A nominal qualitative analysis on the impact was carried out considering three impact categories: low, medium and high. The association between the four environmental variables analyzed has shown that only two farms have a low environmental impact, while eighteen farms have a medium impact and five farms have a high impact. The results show that the role of the professional veterinarian is key in minimizing environmental impact and that the management of excretions and stall bedding should be reviewed in order to reduce the impact. This paper presents recommendations associated with water use, feed and manure management.

Conocimiento experto y legitimidad en el proceso de creación de derecho; Expert Knowledge and Legitimacy in the Law-making Process Iosa, Juan Francisco Primero reconstruyo el modo en que Canale presenta el problemade la (i)legitimidad de las disposiciones opacas, i. e., textos a los queel legislador otorga rango de ley, pese a no comprender su signi!cado, pordeferencia a una supuesta autoridad teórica. En dicha reconstrucción marcovarios aspectos problemáticos. Luego evalúo su respuesta. La encuentroinsu!ciente en tanto no nos ofrece ninguna solución categórica al problema.Bajo el supuesto, plausible, de que dichas disposiciones son ilegítimas(y de que Canale compartiría esa tesis) propongo un dilema: dado que nopodemos prescindir del conocimiento experto opaco sino pagando altoscostos epistémicos entonces debemos elegir entre legitimidad y conocimiento.Ofrezco, por último, una salida al dilema que implica negar quedichas disposiciones sean necesariamente ilegítimas.; First, I reconstruct the way in which Canale presents the problem of the (il)legitimacy of opaque provisions, i. e., texts to which the legislator grants the rank of law, despite not understanding its meaning, out of deference to a supposed theoretical authority. In this reconstruction, I underwrite several problematic aspects. "en I evaluate his response.I find it insuficient in that it does not offer us any categorical solution to the problemUnder the plausible assumption that these dispositions are illegitimate (and that Canale would share this thesis), I propose a dilemma: since we cannot do without opaque expert knowledge except by paying high epistemic costs, then we must choose between legitimacy and knowledge. Finally, I o$er a way out of the dilemma by denying that such provisions are always illegitimate.

Mirá las fotos!: el aprovisionamiento de alimentos en comedores y merenderos comunitarios Dettano, Andrea; Sordini, María Victoria En el puzzle que se organiza entre las imágenes y las narraciones provenientes de las entrevistasvirtuales, el presente escrito se propone hacer un análisis de las imágenes que aparecen en laspublicaciones de las páginas/perfiles y grupos de Facebook de comedores y merenderos comunitarios de La Matanza y General Pueyrredón durante 2021. Más precisamente, nuestro objetivo es explorar el carácter testimonial de las imágenes de los comedores y merenderos en cuanto a la recepción y entrega de donaciones, lo que involucra diferentes lógicas y momentos del abastecimiento. En este escrito, nos detendremos a pensar en algunas cuestiones vinculadas directamente a la exhibición de productos y prácticas de entrega de los mismos, así como de preparaciones que aparecen en las redes sociales. Personas, lugares, objetos y vivencias son elcontenido de las fotografías y es en el recorrido por estos entornos virtuales que hemos organizado algunos interrogantes: ¿Cómo se organiza este contenido? ¿Qué elementos aparecen en las fotos? ¿hay personas? ¿Qué acciones o actividades realizan? ¿Cuáles son sus poses? ¿Cómo se exhibe el momento del abastecimiento?

Visiones y visualidades en Las tres mitades de Ino Moxo y otros brujos de la Amazonía de César Calvo; Visions and Visualities in Las tres mitades de Ino Moxo y otros brujos by César Calvo Di Benedetto, Matías Nicolás Proponemos una lectura crítica de la obra de César Calvo Las tres mitades de Ino Moxo y otros brujos de la Amazonía a partir de la confluencia entre literatura y visualidades en tanto principio constructivo de una proliferación de soportes y de materiales al interior de la obra, como es el caso de la pintura de César Calvo de Araújo, los grabados de Francisco Mariotti o las fotografías de Augusto Falconi. La práctica aglutinante, tanto de la crítica a la especificidad como vector fundamental de la autonomía estética así como también exposición del archivo amazónico, se trata del estado de trance promovido por la ingesta de ayahuasca. Se obtiene así una forma literaria ligada a la construcción de un régimen de lo visual basado en los desarreglos de la percepción alrededor de la cual orbitan las prácticas visuales incorporadas a la ficción.; In this article, we propose a critical reading of the work of César Calvo Las tres mitades de Ino Moxo y otros brujos de la Amazonía from the confluence between literature and visualities as a constructive principle of a destruction of supports and materials within the work, as This is the case of the painting by César Calvo de Araújo, the engravings by Francisco Mariotti or the photographs by Augusto Falconi. The binding practice, both of the criticism of specificity as a fundamental vector of autonomy as well as exposure of the Amazonian archive, is about the trance state promoted by the ingestion of ayahuasca. In this way, a literary form linked to the construction of a regime of the visual based on the derangements of perception is obtained, around which the visual practices built on fiction orbit.

Nuclear physics midterm plan at Legnaro National Laboratories (LNL) Ballan, M.; Bottoni, S.; Caamaño, M.; Caciolli, A.; Campostrini, M.; Cicerchia, M.; Crespi, F. C. L.; Cristallo, S.; Dell’Aquila, D.; Depalo, R.; Fioretto, E.; Galtarossa, F.; Gasques, L. R.; Gottardo, A.; Gramegna, F.; Gulminelli, F.; Kurtukian Nieto, T.; La Cognata, M.; Lenzi, S. M.; Marchi, T.; Mazurek, K.; Mengoni, D.; Mou, L.; Arazi, Andres; Wheldon, C.; Wieland, O.; Wimmer, K.; Wyss, J.; Zago, L.; Zenoni, A. The next years will see the completion of the radioactive ion beam facility SPES (Selective Production of Exotic Species)and the upgrade of the accelerators complex at Istituto Nazionale di Fisica Nucleare – Legnaro National Laboratories (LNL) openingup new possibilities in the fields of nuclear structure, nuclear dynamics, nuclear astrophysics, and applications. The nuclear physicscommunity has organised a workshop to discuss the new physics opportunities that will be possible in the near future by employingstate-of-the-art detection systems. A detailed discussion of the outcome from the workshop is presented in this report.

Determinants of grain number responding to environmental and genetic factors in two- and six-rowed barley types Serrago, Roman Augusto; García, Guillermo A.; Savin, Roxana; Miralles, Daniel Julio; Slafer, Gustavo Ariel Context Barley is one of the most relevant crops worldwide and an essential component of agriculture in Europe in general, and in the Mediterranean region in particular. As cropping areas will hardly rise in the future, yield must be improved to enhance global crop production. Naturally, understanding how yield is affected by environmental and genetic factors in two- and six-rowed barley can help us to develop more efficient management and breeding strategies to increase current yield gains. Objective We aimed to determine the relative importance of genetic and environmental factors on numerical and physiological components of GN for two- and six-rowed barley types. Methods To generate a large and unbiased database, we compiled data of yield and its numerical and physiological components from crop-based experiments (i.e., excluding controlled-conditions experiments and/or approaches using isolated plants) reported in figures and tables in every single paper having the word “barley” in the title published over 25 years in four rigorous and prestigious international journals: Field Crop Research, European Journal of Agronomy, Crop Science and Crop and Pasture Science (formerly Australian Journal of Agricultural Research) between January 1996 and December 2021, both inclusive. Results Spike number (SN) was the most relevant numerical component explaining GN regardless of the source of variation. Regarding physiological components, it seemed that when the driving force was environmental factors, spike dry weight at flowering (SDWF) was more relevant than fruiting efficiency (FE); whilst when the differences were due to genotypic factors, clearly the FE was the component mostly responsible for the changes in GN. When the analysis was restricted to two- and six-rowed barley types, GN improvements were mainly explained by changes in SN for both two- and six-rowed barley types. However, when the physiological components were considered, the responsiveness of GN was more related to SDWF than to FE in two-rowed genotypes, while the opposite was true for the six-rowed type. Conclusions In barley, SN always explained the responses of GN better than grain number per spike (GNS), regardless the source of variation and the type of barley. Respect to the physiological components, environmental factors affected GN mainly through affecting SDWF, while genotypic factors affected GN through affecting FE. SDWF and FE were more relevant for explaining changes in GN two- and six-rowed barleys, respectively. Implications Breeders and agronomists can be aware that it will be more likely to achieve significant gains in yield through focusing more on SN than on GNS regardless of the barley type, whilst regarding the physiological components it would be more relevant to focus on SDWF in two-rowed barley, and on FE in six-rowed barley.

От бонапартизма к популизму: Латиноамериканское прочтение «18 брюмера Луи Бонапарта»; From Bonapartism to populism: Latin American readings of The l8 Brumaire of Louis Bonaparte; Del bonapartismo al populismo: Lecturas latinoamericanas de El l8 Brumario de Luis Bonaparte Paglione, Horacio Armando El XVIII Brumario de Luis Bonaparte conoció en 1852 una edición accidentada y una circulación circunscrita a los emigrados alemanes en los Estados Unidos, sin la menor incidencia directa sobre los acontecimientos de la Francia contemporánea. El público francés recién conoció una traducción en 1891, cuando hacía dos décadas que el régimen de Luis Bonaparte se había derrumbado. Sin embargo, la obra de Karl Marx se transformó en un clásico en las primeras décadas del siglo XX , mientras que la noción de bonapartismo trascendía su contexto nacional y epocal, para convertirse en una categoría del pensamiento del pensamiento político moderno. Con el exilio de Trotsky en México en 1937, la noción se incorpora al vocabulario político latinoamericano para dar cuenta del cardenismo y demás regímenes nacionalpopulares que emergen en este continente a lo largo del siglo XX. Luego de un uso intensivo, el término cae en desuso en la década de 1980, siendo desplazado por una noción sucedánea, la de populismo, elaborada por el politólogo argentino Ernesto Laclau.; «Восемнадцатое брюмера Луи Бонапарта» вышло в 1852 г. во второразрядном издании с тиражом, ограниченным немецкими эмигрантами США, без малейшего прямого влияния на события тогдашней Франции. Французская публика узнала о переводе только в 1891 г., когда режим Луи Бонапарта рухнул двумя десятилетиями ранее. Тем не менее, работа Карла Маркса стала классикой в первые десятилетия двадцатого века, в то время как понятие бонапартизма вышло за рамки своего национального и временного контекста, став категорией современной политической мысли. С изгнанием Троцкого в Мексику в 1937 г. это понятие было включено в латиноамериканский политический словарь, чтобы объяснить карденизм и другие национал-реформистские (популистские) режимы, возникшие на этом континенте на протяжении ХХ в. После интенсивного использования этот термин вышел из употребления в 1980-х гг., будучи вытесненным суррогатным понятием популизма, разработанным аргентинским политологом Эрнесто Лакло.; The eighteenth Brumaire of Louis Bonaparte was in 1852 a bumpy edition and a circulation limited to German emigrants in the United States, without the slightest direct impact on the events of contemporary France. The French public only knew a translation in 1891, when Louis Bonaparte's regime had collapsed two decades earlier. However, the work of Karl Marx became a classic in the first decades of the twentieth century, while the notion of Bonapartism transcended its national and epochal context, to become a category of modern political thought thought. With Trotsky's exile in Mexico in 1937, the notion was incorporated into the Latin American political vocabulary to account for Cardenismo and other national-popular regimes that emerged on this continent throughout the twentieth century. After intensive use, the term fell into disuse in the 1980s, being displaced by a surrogate notion, that of populism, elaborated by the Argentine political scientist Ernesto Laclau.

Hard X-ray view of the γ-ray binary LS I +61°303 Saavedra, Enzo Agustin; Romero, Gustavo Esteban In this paper, we present the results of a study of the X-ray emission of the source LS I +61◦303 detected by the NuSTAR satellite. The observation was made on August 14, 2017, with an exposure of 55 ks. The lightcurve in the energy range from 3 to 79 keV is dominated by persistent emission of ∼ 0.5 c/s, for a bin of 5 s. Superposed to this emission, two microflares were detected with a maximum intensity of 1.5 c/s. Spectral analysis showed that an absorbed power law is sufficient to describe the spectrum. The power law index (E−Γ) was 2. We briefly describe a physical scenario where this emission can occur.

El perfeccionismo a debate; Perfectionism and its Enemies Legarre, Santiago Aunque el concepto de perfeccionismo siempre existió, la palabra es reciente. En este trabajo se distingue el concepto de la palabra, y otro tanto se hace con el antiperfeccionsimo. Se examinan dos variantes perfeccionistas, una más extrema (de corte aristotélico) y otra moderada (de corte tomista). Para ello, el pensamiento de John Finnis es usado como guía. También se examinan las principales respuestas y críticas al perfeccionismo. Se toma aquí como guía el pensamiento de John Stuart Mill. Finalmente, se traza un balance valorativo, sin tomar partido.; The concept of perfectionism has always existed, but the use of the word is recent. This article distinguishes word from concept. Similarly, this article also distinguishes the word “antiperfectionism” from its concept. Two types of perfectionism are examined: one more extreme, one more moderate. John Finnis’s point of view is adopted as a guide throughout. Answers and criticisms to perfectionism are also considered in this article. For this purpose, John Stuart Mill’s theory is adopted as a starting-point. Finally, the article includes an assessment of perfectionism.

Análisis del gas molecular presente en la zona de colisión de cáscaras y supercáscaras de H I Suad, Laura Andrea; Cárdenas, Silvina Belén; Blanco, Agustina Belen; Duronea, Nicolas Urbano; Cichowolski, Silvina The H I shells and supershells are structures detected in the H I emission distribution as minima surrounded by walls of enhanced emission. It is believed that their expansion and collision can induce the formation of molecular gas in the collision zones that are compressed, but there exist few observational examples of this phenomenon. In this work, we search for evidence of molecular gas that could have been created for the action of shell and supershell collisions. Based on H I data from the HI4PI survey in a rectangular area of ∼ 5° per side, centered at (l, b) = (107°, -3°), several shells and supershells were detected in the velocity range between -45 and -67 km s-1 that could be in collision. Using CO emission data obtained from the FCRAO survey, we have identified molecular gas in the collision zone of the shells and supershells. In this work, we present a preliminary study on the characteristics of the H I structures and of the molecular clouds present in this region of the Galaxy.

Mesures de guerre: Pertes, savoirs, usages Otero, Hernán Gustavo Depuis toujours existe une relation étroite, bien que complexe et fluctuante, entre la guerre, la population etles progrès scientifiques, y compris, parmi ces derniers, les processus de mesure. Cette relation est devenueplus profonde et plus systématique avec l’émergence des États modernes et leur désir de connaître et de ga-rantir la gouvernementalité des populations. Il n’est donc pas étonnant que la revue Histoire & Mesure aitconsacré en 2007 un dossier, coordonné par Claire Lemercier, au thème « Guerre et statistiques »…

Personalidad psicopática en adultos varones recluidos en penitenciarias: relación con bullying y personalidad oscura; Psychopathic personality in adult males incarcerated in penitentiaries: Relationship with bullying and dark personality Resett, Santiago Alejandro; Gonzalez Caino, Pablo La psicopatía es un importante constructo psicosocial, pero escasamente estudiado en población penitenciaria, principalmente en los países de la América Latina. Objetivos: examinar si los rasgos de la personalidad psicopática a partir del modelo multidimensional de Boduzeck et al. eran un predictor del bullying en adultos varones recluidos en penitenciarias, controlando la personalidad oscura. Una muestra de 272 internos masculinos de penitenciarias de la Argentina (edad media = 34,44) contestaron el Psychopathic Personality Traits Scale de Boduzeck et al., el Dirty Dozen de Jonason y Webster y la Escala de Bullying de Ireland. Los internos condenados por delitos violentos puntuaban más altos en los cuatros rasgos de la psicopatía. No se hallaban asociaciones con haber estado antes recluido o no, ni con el tiempo de reclusión. Los puntajes de los rasgos psicopáticos predecían las formas de bullying con R2 = 17%, 19%, 13% y 21%, para bullying físico, verbal, a la propiedad e indirecto, respectivamente, controlando la tríada oscura de la personalidad. El modelo de Boduzeck et al. sería un modelo predictor de la perpetración del bullying y útil para ser usado en penitenciarias. En la discusión se analizan las implicancias de este trabajo y se brindan sugerencias para futuros estudios.; Psychopathy is an important psychosocial construct, but little studied in the prison population, mainly in Latinoamerican countries. Aims: to examine whether psychopathic personality traits based on the multidimensional model of Boduzeck et al. were a predictor of bullying in male adults incarcerated in prisons, controlling for dark personality. A sample of 272 male prison inmates in Argentina (mean age = 34,44) answered the Psychopathic Personality Traits Scale by Boduzeck et al., the Dirty Dozen by Jonason and Webster, and the Ireland Bullying Scale. Inmates convicted of violent crimes scored higher on all four traits of psychopathy. No associations were found with having been incarcerated before or not, or with the length of confinement. Psychopathic trait scores predicted forms of bullying with R2 = 17%, 19%, 13%, and 21%, for physical, verbal, proprietary, and indirect bullying, respectively, controlling for the dark triad of personality. Boduzeck et al. model it would be a predictive model of the perpetration of bullying and useful to be used in prisons. In the discussion, the implications of this work are analyzed and suggestions for future studies are provided.

On the structure of the fundamental subspaces of acyclic matrices with in the diagonal Jaume, Daniel Alejandro; Pastine, Adrián Gabriel A matrix is called acyclic if replacing the diagonal entries with 0, and the nonzero diagonal entries with 1, yields the adjacency matrix of a forest. In this paper we show that the null space and the rank of an acyclic matrix with 0 in the diagonal is obtained from the null space and the rank of the adjacency matrix of the forest by multipliying by nonsingular diagonal matrices. We combine these with an algorithm for finding a sparsest basis of the null space of a forest to provide an optimal time algorithm for finding a sparsest basis of the null space of acyclic matrices with 0 in the diagonal.

Los discursos críticos de la literatura argentina para niños (2000-2013) en perspectiva histórica o la tradición de las discusiones teóricas y pedagógicas; Critical Discourses of Argentinian Literature for Children (2000-2013) from a Historical Perspective or the Tradition of the Theoretical and Pedagogical Discussions Rodríguez, Natalia Elizabeth Este artículo se propone una aproximación a las prácticas históricas, sociales y culturales que conforman la tradición de la literatura infantil y juvenil (LIJ), en función de la representación de las circunstancias, los procesos, los agentes y las agencias intervinientes en la configuración de los discursos críticos de la literatura argentina para niños (LAPN) contextuados entre 2000 y 2013. Sostenemos que esta coyuntura aporta a la consolidación de la LIJ, asociada a la progresiva instauración de una producción literaria tanto como teórica que se manifiesta en su especificidad. Postulamos, asimismo, un abordaje analítico-interpretativo de textos críticos inscriptos en las décadas previas al mencionado periodo, a modo de historización de las discusiones teóricas y pedagógicas, orientando la puesta en tensión de los estereotipos acerca de la infancia y las hegemonías de los adultos, así como una reconceptualización de la literatura para chicos y jóvenes en clave de experiencia estética.; This paper aims to examine the tradition of the historical, social, and cultural approaches that constitute our children’s and young people’s literature (LIJ for its initials in Spanish), according to the representation of the circumstances, processes, agents and intervening agencies that end up participating in the configuration of critical discourses of Argentinian literature for children (LAPN for its initial in Spanish) in the context of the 2000/2013 production. We state that this concomitance contributes to the consolidation of LIJ, associated to the progressive settlement of both a literary as well as theoretical production that is specific of this field. We postulate as well, an analytical-interpretative approach of critical texts belonging to the previous decades of the above mentioned period, so as to highlight the historical perspective of the theoretical and pedagogical discussions, giving direction to the tension of the stereotypes related to childhood and adult hegemonies, as well as redefining literature for children and young people from an esthetical experience perspective.