Resource-Efficient Ubiquitous Sensor Networks for Smart Agriculture: A Survey Arif, Muhammad; Maya, Juan Augusto; Anandan, Narendiran; Pérez, Dailys Arronde; Lopez Tonellotto, Mariana Andrea; Zangl, Hubert; Rinner, Bernhard Smart agriculture is an enabling technology addressing the increasing challenges of efficiency, sustainability, and quality of food production. It requires rich data from the farming area at high spatial and temporal resolution. Although remote sensing systems have become readily available recently, in-situ sensing is still required to capture important properties of soil, crops, and their close environment. Ubiquitous sensor networks (USNs) provide a seamless and real-time in-situ sensing infrastructure that could overcome some limitations of smart agriculture. Resource efficiency is essential for USNs due to 1) the expected long operation time in typically resource-constrained environments, 2) the vast amount of captured and processed data, and 3) the ever-increasing application requirements. This survey comprehensively analyzes resource optimization techniques for USNs along three USN layers: the sensing, the communication & connectivity, and the processing & analysis layer. It discusses the application of these techniques in the smart agriculture domain and identifies current challenges and open research issues.

Positioning of the dispersive electrode and its effect on the safety and efficacy of radiofrequency ablation Berjano, Enrique; Irastorza, Ramiro Miguel We recently read the article entitled “Impact of dispersive patch electrode positioning on safety and efficacy of radiofrequency catheter ablation” by Futyma, Zarębski and Sauer. The authors state that the position of the patch has an impact in terms of RF lesion size. Specifically, they state that: “When the dispersive patches are placed incorrectly, it can lead to suboptimal lesion formation and potentially increase the risk of adverse events.” However, they do not provide any reference to this, and in fact there is not currently enough clinical evidence in the literature to allow such a statement.In our previous studies based on computational modeling, we did not observe asignificant clinical impact of the different positions of the dispersive electrode on lesion size. In the article by Futyma et al, the authors cite our two previous works and emphasize some of the limitations of our methodology in order to cast doubt on our findings. However, contrary to what the authors claim, 1) cardiac lesion depths were really calculated considering the impact on extracardiac structures (lung, connective, bonny structures, etc.), and 2) the conductivity and resistivity of lungs were taken from a well recognized database, which is exactly the same as the one used by other authors of a recent modeling work whose conclusion is apparently in line with what Futyma et al claim. It seems that for the authors in silico modeling is an appropriate toolonly when the results agree with their point of view.Other limitations mentioned by the authors, such as 1) the impact of cumulative thermal injury of the oesophagus from multiple sequential and overlapping RF applications, 2) the fluctuations in oesophageal resistivity which can lead to higher current density in the oesophageal region, and 3) the fact that atrio-oesophageal fistula formation is multifactorial, available in silico models may not provide a definitive estimation of RF current pathways in view of DPE positioning, simply have very little to do with the impact of DPE positioning on lesion size.The authors conclude that the position of dispersive patch during RF catheter ablation is a critical factor that affects safe and effective lesion formation. Our conclusion after reading the article is that, as stated in the journal section, this is simply their point of view, and that there is not enough scientific evidence to show that repositioning the DPE in general allows modulating the size of the RF lesion.

We must not fool ourselves: A reply to Sethi et al. on the use of BirdNET to classify neotropical birdcalls Barros de Araújo, Carlos The acousticmonitoring (PAM) of biodiversity has gained traction in recent years, even though classifying species within a recording could be challenging in places where acoustic diversity is high. Among the classification algorithms recently developed, BirdNET is probably the most promising. BirdNET was built to recognize over six thousand bird species and was trained using data from Xeno-canto and the Macaulay Library. Despite its huge potential, BirdNET is known to struggle with noisier recordings (1), reducing its accuracy for PAM.

Unsupervised machine learning for the detection of exotic phases in skyrmion phase diagrams Gomez Albarracin, Flavia Alejandra Undoubtedly, machine learning (ML) techniques are being increasingly applied to a wide range of situations in the field of condensed matter. Amongst these techniques, unsupervised techniques are especially atractive, since they imply the possibility of extracting information from the data without previous labeling. In this work, we resort to the technique known as “anomaly detection” to explore potential exotic phases in skyrmion phase diagrams, using two different algorithms: Principal Component Analysis (PCA) and a Convolutional Autoencoder (CAE). First, we train these algorithms with an artificial dataset of skyrmion lattices constructed from an analytical parametrization, fordifferent magnetizations, skyrmion lattice orientations, and skyrmion radii. We apply the trained algorithms to a set of snapshots obtained from Monte Carlo simulations for three ferromagnetic skyrmion models: two including in-plane Dzyaloshinskii-Moriya interaction (DMI) in the triangular and kagome lattices, and one with an additional out-of-plane DMI in the kagome lattice. Then, we compare the root mean square error (RMSE) and the binary cross entropy (BCE) between the input and output snapshots as a function of the external magnetic field and temperature. We find that the RMSE error and its variance in the CAE case may be useful to not only detect exotic low temperature phases, but also to differentiate between the characteristic low temperature orderingsof a skyrmion phase diagram (helical, skyrmions and ferromagetic order). Moreover, we apply the skyrmion trained CAE to two antiferromagnetic models in the triangular lattice, one that gives rise to antiferromagnetic skyrmions, and the pure exchange antiferromagnetic case, finding that thebehaviour of the RMSE is still an indicator of different ordering. Finally, we explore the portability of the technique with the same CAE applying it to a ferromagnetic skyrmion model in the square lattice.

Insulin resistance in childhood obesity: The role of dietary habits and their association with novel markers of cardiovascular disease Davico, Belen; Lozano Chiappe, Ezequiel Silvano; Gaete, Laura; Gomez Rosso, Leonardo Adrián; Sáez, María Soledad; Tetzlaff, Walter Francisco; Palenque, Patricia; Osta, Viviana; Yánez Sánchez, Amanda Inés; Boero, Laura; Trifone, Liliana; Martin, Maximiliano; Brites, Fernando Daniel Background: Childhood obesity presents numerous comorbidities such as insulin resistance (IR) and dyslipidemia, andcould be associated with alterations in novel markers of cardiovascular (CV) risk like: (1) the activities of associatedenzymes such as lipoprotein associated phospholipase A2 (Lp-PLA2) and paraoxonase 1 (PON 1), (2) reverse cholesteroltransport (RCT), which comprises cellular cholesterol efflux (CCE), in addition to lecithin:cholesterol acyltransferase(LCAT) and cholesteryl ester transfer protein (CETP) activities, and (3) high density lipoprotein (HDL) antioxidant capacity. Moreover, IR could worsen these cardiometabolic alterations. The objective of the present study was to characterize the effect of IR on novel CV markers in a pediatric population with obesity.Methods: Twenty-five obese children and adolescents with IR, and 25 without IR took part in the study. Anthropometricparameters, Tanner stage and dietary habits were registered. Glucose, insulin, non-esterified fatty acid (NEFA), lipid, andhigh sensitivity C reactive protein (hsCRP) levels, plus Lp-PLA2, LCAT, CETP and PON 1 activities, as well as CCE andHDL antioxidant capacity were measured. A cutoff point of 3.16 in Homeostatic Model Assessment for Insulin Resistance(HOMA-IR) determined the presence of IR.Results: No differences were observed in age, sex and Tanner stage. Expectedly, the group with IR displayed higher insulin and NEFA levels (p < 0.05). They also presented increased Lp-PLA2 and decreased PON activities (p < 0.05).Importantly, these differences were associated with dietary habits (p < 0.05).Conclusion: IR present in pediatric obesity associated with vascular specific inflammation and reduced PON 1 activity, inaddition to alterations in glucose metabolism, thus increasing CV risk in adulthood. These proatherogenic disturbanceswere conditioned by dietary habits.

Del periodismo interpretativo e innovador de los años sesenta y setenta al periodismo de resistencia frente a la dictadura militar (1976-1983); From interpretative and innovative journalism of the 1960s and 1970s to resistance journalism during the military dictatorship (1976-1983) Baldoni, Micaela Mariel El artículo se propone reconstruir las reconfiguraciones que sufrió el periodismo político entre las décadas de 1960 y 1970, enfocándose en los roles del oficio y en los modelos de periodismo que se volvieron legítimos a lo largo del período analizado. Para ello, se concentra, en primer lugar, en la emergencia de un periodismo analítico, interpretativo y comprometido vinculado a la corriente del “nuevo periodismo”, que encontró en la revista político-intelectual Primera Plana, en el diario La Opinión y en la figura de Rodolfo Walsh sus expresiones más representativas. En segundo lugar, indaga la manera este proyecto de innovación fue clausurado por la censura de la última dictadura militar. Se analiza cómo desde el exilio o desde el ostracismo –de aquellos que se quedaron en el país– se configuró un periodismo de resistencia y de denuncia del terrorismo de Estado. En términos metodológicos, la investigación se centra en una estrategia de indagación cualitativa centrada en las principales instituciones y actores periodísticos que conformaron aquellas formaciones intelectuales y las redes de difusión durante la dictadura.; The article aims to reconstruct the reconfigurations that political journalism underwent between the 1960s and 1970s, focusing on the roles of the profession and the journalism models that became legitimate throughout the analyzed period. To achieve this, it first concentrates on the emergence of analytical, interpretive, and committed journalism associated with the "new journalism" movement, which found its most representative expressions in the political-intellectual magazine Primera Plana, the newspaper La Opinión, and the figure of Rodolfo Walsh. Secondly, it explores how this innovative project was shut down by the censorship of the last military dictatorship. The analysis examines how a journalism of resistance and denunciation of state terrorism was configured from exile or ostracism—by those who remained in the country. Methodologically, the research focuses on a qualitative inquiry strategy centered on the main journalistic institutions and actors that formed those intellectual formations and dissemination networks during the dictatorship.

“Lo único irreal es la reja…”: Tras los rastros de la cárcel dieciochesca en San Miguel de Tucumán (1740-1779); “The only unreal thing is the grille...”: Following the traces of the eighteenthcentury prison in San Miguel de Tucumán (1740-1779); “La seule chose irréelle, c’est est la grille…”: Sur les traces de la prison du XVIIIe siècle à San Miguel de Tucumán (1740-1779) Ataliva, Víctor Hugo La cárcel colonial de San Miguel de Tucumán fue escasamente abordada por la historiografía local. En esta primera aproximación al espacio carcelario, nos proponemos reconstruir su itinerario en un período particular, desde 1740 hasta 1779, marco temporal en el que la ciudad retoma su crecimiento económico tras su relocalización y previo al impacto de las ordenanzas y bandos de buen gobierno del Antiguo Régimen. Además de determinar la trayectoria del espacio carcelario en la cartografía urbana durante la segunda mitad del siglo XVIII, pretendemos relevar resistencias y acciones contrahegemónicas por quienes atravesaron por la experiencia del encierro.; The colonial prison of San Miguel de Tucumán was scarcely approached by local historiography. In this first approach to the prison space, we propose to reconstruct its itinerary in a particular period, from 1740 to 1779, a time frame in which the city resumed its economic growth after its relocation and prior to the impact of the ordinances and good government banns (“bandos de buen gobierno”) of the Ancient Regime. In addition to determining the trajectory of the prison space in urban cartography during the second half of the eighteenth century, we intend to reveal resistance and counter-hegemonic actions by those who went through the experience of imprisonment.; La prison coloniale de San Miguel de Tucumán a été peu abordée par l’historiographie locale. Dans cette première approche de l'espace carcéral, nous proposons de reconstruire son itinéraire au cours d'une période particulière, de 1740 à 1779, une période pendant laquelle la ville connaît un nouvel essor économique après sa relocalisation et avant l'impact des ordonnances et des édits de bon gouvernement d’Ancien Régime. En plus de déterminer l'évolution de l'espace carcéral dans la cartographie urbaine de la seconde moitié du XVIIIe siècle, nous cherchons à mettre en lumière les résistances et les actions contre-hégémoniques de ceux qui ont traversé l'expérience de l'enfermement.

La dimensión patrimonial del paisaje de los Valles Andinos Centrales argentinos como acelerador de los Objetivos de Desarrollo Sostenibles: ¿Utopía o realidad?; The heritage dimension of the landscape of the argentine Central Andean Valleys as an accelerator of Sustainable Development Goals: Utopia or reality? Manzini Marchesi, Lorena Verónica; Amaya, Eliana Desirée; Rosés, Cecilia María En la segunda Cumbre Internacional del Hábitat de América Latina y el Caribe 2023 se alertó sobre la necesidad de acelerar el cumplimiento de los Objetivos de Desarrollo Sostenible (ODS) ante el elevado riesgo de incumplimiento de la Agenda 2030. En este vaivén entre utopía y realidad, se observa la creciente vulnerabilidad de la sostenibilidad en los paisajes de valor patrimonial de los valles andinos centrales argentinos (VAC). Ante ello, analizamos cómo la dimensión patrimonial del paisaje al relacionar a través de la gestión aspectos perceptuales, materiales e históricos, se transforma en un potencial acelerador de ODS, con la particularidad que el patrimonio público con las vías de circulación como articuladoras, contribuyen al vínculo entre el paisaje y el diseño de estrategias de desarrollo sostenibles. Para ello aplicamos una metodología interdisciplinaria cualitativa en clave patrimonial del Observatorio y laboratorio patrimonial del paisaje cultural de los (VAC) CONICET - FAUD UNSJ.; At the second International Habitat Summit of Latin America and the Caribbean 2023, the need to accelerate compliance with the Sustainable Development Goals (SDGs) was raised in the face of the high risk of non-compliance with the 2030 Agenda. In this swing between utopia and reality, the growing vulnerability of sustainability is observed in the landscapes of heritage value of the Argentine central Andean valleys (VAC). Given this, we analyze how the heritage dimension of the landscape, by relating perceptual, material and historical aspects through management, is transformed into a potential accelerator of SDGs, with the particularity that public heritage with circulation routes as articulators, contribute to the link between the landscape and the design of sustainable development strategies. To do this, we apply a qualitative interdisciplinary methodology in a heritage key from the Observatory and heritage laboratory of the cultural landscape of the (VAC) CONICET - FAUD UNSJ.

Relationship Between Lithological and Morphometric Aspects of Mascasín Saline Watershed and Its Feeder Depositional Systems, San Juan and La Rioja Provinces, Argentina Santi Malnis, Paula; Rothis, Luis Martin Understanding the relationships among watersheds and derived depositional products is critical to developing analog studies with the rock record, especially for continental intermontane basins. Also, it is crucial to study river flood occurrences. Multivariate statistics analysis allows for the comprehension of the relationship among substrate, climate, and depositional products of the watersheds that feed the endorheic Mascasin Saline Basin, San Juan and La Rioja provinces, Argentina. Using a GIS platform, geomorphological, stratigraphic, morphometric, and structural analysis gave a dataset of variables for defining clusters. Under a similar climate, clustering analysis permits defining two main controls on watersheds and depositional products: parent rock composition and geological structures (faults and lineaments). The results underscore the critical role that lithology and structural controls play in basin morphometry and emphasize the need to quantify these variables for landscape evolution models.

Vinasse as a source of compounds with antimicrobial activity Rodriguez Vaquero, Maria Jose; Nisoria Santillan, Paula Elizabeth The objective of this work is the isolation and investigation of the antibacterial activity of bacteria and compounds present in vinasse. Vinasse is a big problem in our country, due to the large amount of organic matter present in it and the volume in which it is generated. The inadequate disposal of sugarcane vinasse has received much attention since a long time ago, due to environmental problems associated to this practice and this is one of the organic wastes with the greatest polluting effect on flora and fauna. In this work was investigated the antibacterial efficiency of ethanolic extract of vinasse from Argentine, and bacteria isolated from this waste, against pseudomonas aeruginosa, Escherichia coli and Candida albicans. All the isolated were assigned as presumed lactic acid bacteria, and the screening of the antimicrobial activity demonstrates that only 2 supernatants possess antibacterial activity against E. coli and Ps. aeruginosa, whereas ethanolic extract of vinasse showed antimicrobial activity against E. coli, Ps. aeruginosa and C. albicans Vinasse extract was more effective to inhibit the biofilm formation of E. coli and Pseudomonas aeruginosa. On the other hand, the addition of the extract combined with shaking on bacterial biofilm previously formed, removed the biofilm by both bacteria studied and the removal percentage increases with vinasse concentrations and with the stirring time. The biofilm formed by Pseudomonas aeruginosa was more resistant at treatment compared with that biofilm formed by E.coli. The possible use of proposed treatment allows the vinasse to stop being a polluting agent and to become an abundant and raw material as antibacterial agent.

La experimentación en el campo de las Ciencias Sociales. Aproximaciones al método y la entrevista clínica-crítica Muñiz, Belen; Azcárate, Josefina En el presente artículo proponemos describir y reflexionar acerca de una técnica de recolección de datos inusual en las investigaciones en ciencias sociales: la entrevista clínica crítica diseñada por la Escuela Epistemológica de Jean Piaget. Comenzamos describiendo el proceso constituyente del método clínico crítico, continuamos con la caracterización de la técnica en comparación con otras usualmente utilizadas en el campo de las ciencias sociales como la entrevista estructurada y la entrevista en profundidad directiva y no directiva, para detenernos en los aspectos distintivo de la entrevista clínica crítica: la contrasugestión y la experimentación. Al finalizar, ejemplificamos con una entrevista realizada en el marco de las investigaciones exploratorias en curso de nuestro equipo de investigación.

Desafíos entre las imágenes: trabajo metodológico con/junto a las visualidades Capasso, Veronica Cecilia; Barone Zallocco, Ornela En este dosier hemos reunido escritos sentipensantes de las visualidades en rela-ción con sus trabajos de investigación y docencia. Los artículos compilados aquí buscan gestar otras posibilidades metodológicas en aras de articular disciplinas, saberes y devenires con/junto a las visualidades. Les autores de los escritos, así como les integrantes del Colectivo Ayllu, a les cuales entrevistamos, se preguntan por, y en algunos de los casos también componen creativamente, visualidades necesarias ante la normatividad mainstream de cuerpos, prácticas y afectos plausibles de ser vistos y mostrados. Nuestra intención como compiladoras ha sido ubicar el acento no solo en la visualidad como reguladora y co-productora de sen-tidos y prácticas sociales, sino también registrar los modos mediante los cuales sentipensamos el régimen de visualidad en nuestras investigaciones, en sus di-mensiones (est)ético políticas y epistemológicas. Las potenciales contravisualida-des cultivándose desde colectivos artísticos, artistas, investigadoras e investiga-dores desafían la inteligibilidad cómoda de las miradas, generando propuestas contravisuales o contracoloniales, como lo propone el Colectivo Ayllu, o la posi-bilidad de gestar dispositivos de fuga a la plantación de la visualidad como propone Iki Yos Piña Narváez.

El registro burocrático del mérito: condiciones morales y lealtad. Un estudio de los legajos personales de los comandantes en jefe de la armada argentina (1955-1983) Barragán Sáez, Paula Eva Ivonne Este artículo estudia los legajos personales de los comandantesen jefe de la Armada Argentina durante el periodo 1955 y 1983. Repone ini-cialmente los atributos, las condiciones personales y los comportamientosvalorados por esta institución e identifica designaciones que impulsaron sullegada a los cargos más altos de la fuerza. A su vez, indaga sobre la genealogíaburocrática de estos procesos, al reconstruir los modos de regular y registrarlas carreras profesionales de los marinos y las categorías utilizadas a tal fin.Analiza un corpus documental original, que no cuenta con antecedentes deanálisis sistemáticos, los legajos de conceptos y de servicios de catorce coman-dantes. Sus resultados problematizan la imagen pública de unidad interna yhomogeneidad política exhibida por la fuerza de mar a partir de identificarel estricto control de su conducción sobre oficiales superiores y una culturainstitucional fuertemente articula-da en torno a su almirantazgo.

Efectos de tratamientos silviculturales e intensidad de corta sobre la estructura y biodiversidad de un bosque alto del Chaco Húmedo; Effects of silvicultural treatments and felling intensity on the structure and biodiversity of a high forest of the Humid Chaco Kees, Sebastian Miguel; Brassiolo, Miguel Marcelo; Toledo, Santiago; Peri, Pablo Luis El presente trabajo, busca conocer la respuesta de un bosque alto del Chaco Húmedo ante diferentes intervenciones silviculturales después de 19 años de efectuada la corta en términos de estructura y composición específica y sus variaciones. En una superficie de bosque de 5,4 hectáreas se combinaron dos métodos de corta (método de la masa, MM y método de árbol futuro, MAF) y dos intensidades de raleo (20 % y 33 %) en un diseño experimental de parcela dividida completamente aleatorizada con cuatro repeticiones. Se censaron todos los árboles vivos presentes con DAP mayor a 10 cm en 3 oportunidades, analizándose la estructura horizontal (abundancia, frecuencia, dominancia, distribuciones diamétricas e índice de valor de importancia) y la biodiversidad forestal mediante los índices de Shannon Wiener, Simpson y el Cociente de Mixtura. Los resultados muestran que independientemente del método e intensidad de corta no se generaron modificaciones importantes en la estructura horizontal del bosque, pero se logró mejoras en términos de biodiversidad forestal. Las especies esciófitas fueron las más favorecidas por la intervención. Teniendo en cuenta el método, el MAF presentó mejores resultados que el MM.; The present work seeks to know the response of the high humid Chaco Forest to different silvicultural interventions that occurred 19 years ago in terms of structure, specific composition and their variations. In an area of 5.4 hectares of forest, two silvicultural methods (mass method, MM and future tree method, FTM) and two thinning intensities (20% and 33%) were combined into a completely randomized experimental split plot design with four replicates. All live trees with a DBH higher than 10 cm were censused three times, and the horizontal structure (abundance, frequency, dominance, diameter distributions and importance value index) and forest biodiversity were analyzed using the Shannon Wienner, Simpson indices and the Mixture Quotient. The results show that regardless of the felling method and its intensity, none important modification occur in the horizontal forest structure though improvements of forest biodiversity do happen being the sciophyte species the most favored by the intervention. As to the method, it may be said the FTM yields better results than the MM.

Optimal Saving, Optimal Investment and Economic Growth: Evidence from Countries with different income and openness levels Delbianco, Fernando Andrés; Dabús, Carlos Darío This study explores the relation between both saving rate and the ratio investment/GDP on economic growth for a wide sample of countries with different income and openness levels. The evidence indicates that in general higher saving and investment are growth promoting, in special in lower and closer economies. There the capital marginal return must be higher because of the scarcity of capital proper of less developed economies. In turn, the lack of external markets imposes the necessity to increase saving and investment in order to expand the domestic markets. Besides, savings and investment that maximize the growth rate are higher than the modal values. Thus, to increasing them should promote higher growth rates. Economic policy recommendations are that the governments should impulse austerity both at public and private level, as fiscal policies and a tax system tending to achieve higher saving and investment rates.

El cannabis como problema público en Olavarría y Tandil; Cannabis as a public problem in Olavarría and Tandil Mentasti, Silvina; Romero, Lucia Ana El objetivo de este artículo es reconstruir cómo el cannabis medicinal y terapéutico se convirtió en un problema público en las ciudades de Olavarría y Tandil entre 2016 y 2023, a partir de los conocimientos, discursos y debates públicos producidos por las organizaciones sociales activistas, los expertos acreditados y los funcionarios y políticos locales para instalar el tema en la agenda pública, de gobierno y científica local. La estratégica metodológica se basó en el relevamiento y análisis de datos, la interpretación de documentos, material de archivo y de páginas web, y en la realización y el análisis de entrevistas semi-estructuradas a líderes y miembros de organizaciones sociales, expertos y hacedores de política de nivel local. La hipótesis sostiene que una renovación del movimiento cannábico tradicional, dado a partir de nuevas moralidades y conocimientos terapéuticos y medicinales de la planta, y las alianzas creadas con expertos acreditados y políticos locales del territorio, en el marco de relaciones de confianza e inter conocimiento, propiciadas por la escala local y comunitaria de este tipo de ciudades, lograron generar nuevos sentidos, expectativas e intereses (de salud, económicos, productivos y desarrollo local) sobre la planta, que condujeron a posicionarla como un problema de interés público y de gobierno en el territorio.; The objective of this article is to reconstruct how medicinal and therapeutic cannabis became a public problem in the cities of Olavarría and Tandil between 2016 and 2023, based on the knowledge, speeches and public debates produced by social activist organizations, experts accredited and local officials and politicians to place the issue on the local public, government and scientific agenda. The methodological strategy was based on the collection and analysis of data, the interpretation of documents, archival material and web pages, and on the conduct and analysis of semi-structured interviews with leaders and members of social organizations, experts and policy makers. local level policy. The hypothesis maintains that a renewal of the traditional cannabis movement, given from new moralities and therapeutic and medicinal knowledge of the plant, and the alliances created with accredited experts and local politicians of the territory, within the framework of relationships of trust and inter-knowledge, promoted by the local and community scale of this type of city, they managed to generate new meanings, expectations and interests (health, economic, productive and local development) about the plant, which led to positioning it as a problem of public and government interest in the territory.

A Latitudinal Cline in the Taxonomic Structure of Eelgrass Epifaunal Communities is Associated With Plant Genetic Diversity Gross, Collin P.; Duffy, J. Emmett; Hovel, Kevin A.; Reynolds, Pamela L.; Boström, Christoffer; Boyer, Katharyn E.; Cusson, Mathieu; Eklöf, Johan; Engelen, Aschwin H.; Eriksson, Britas Klemens; Fodrie, F. Joel; Griffin, John N.; Hereu, Clara María; Hori, Masakazu; Hughes, A. Randall; Ivanov, Mikhail V.; Jorgensen, Pablo; Kardish, Melissa R.; Kruschel, Claudia; Lee, Kun Seop; Lefcheck, Jonathan; McGlathery, Karen; Moksnes, Per Olav; Nakaoka, Masahiro; O'Connor, Mary I.; O'Connor, Nessa E.; Olsen, Jeanine L.; Orth, Robert J.; Peterson, Bradley J.; Reiss, Henning; Rossi, Francesca; Ruesnik, Jennifer; Sotka, Erik E.; Thormar, Jonas; Tomas, Fiona; Unsworth, Richard; Voigt, Erin P.; Whalen, Matthew A.; Ziegler, Shelby L.; Stachowicz, John J. Aim Biogenic structural complexity increases mobile animal richness and abundance at local, regional and global scales, yet animal taxa vary in their response to complexity. When these taxa also vary functionally, habitat structures favouring certain taxa may have consequences for ecosystem function. We characterised global patterns of epifaunal invertebrates in eelgrass (Zostera marina) beds that varied in structural and genetic composition. Location North America, Europe and Asia. Time Period 2014. Major Taxa Studied Peracarid crustaceans and gastropod molluscs. Methods We sampled epifaunal invertebrate communities in 49 eelgrass beds across 37° latitude in two ocean basins concurrently with measurements of eelgrass genetic diversity, structural complexity and other abiotic and biotic environmental variables. We examined how species richness, abundance and community composition varied with latitude and environmental predictors using a random forest approach. We also examined how functional trait composition varied along with community structure. Results Total species richness decreased with latitude, but this was accompanied by a taxonomic shift in dominance from peracarid crustaceans to gastropods, which exhibited different sets of functional traits. Greater eelgrass genetic diversity was strongly correlated with both richness and abundance of peracarids, but less so for gastropods. Main Conclusions Our results add to a growing body of literature that suggests genetic variation in plant traits influences their associated faunal assemblages via habitat structure. Because peracarids and gastropods exhibited distinct functional traits, our results suggest a tentative indirect link between broad-scale variation in plant genetic diversity and ecosystem function.

Learning with computer simulations: A case study on reservoir temperatures in carnot cycles; Aprendizagem com Simulações Computacionais: Um estudo de caso sobre temperaturas de reservatório em ciclos de Carnot Velasco, Juan José; Buteler, Laura Maria; Coleoni, Enrique Andres Computer simulations have played a significant role in the development of physics, and in physics education as well. Researchers have addressed whether simulations promote learning, but few studies have investigated how simulations actually participate in learning processes. This study seeks to describe how simulations participate in conceptual learning. A case study is carried out using videotaped interviews with three groups of undergraduate students as they address a problem-solving task on thermodynamics (Carnot cycles). Students use a specifically developed simulation for support. The analysis is based on Coordination Class Theory (CCT). Results indicate that students not only use the simulation to think; it is actually a part of what they think. Students were found to engage in three different interaction dynamics with the simulation. Attuned with CCT, these were coded as either Extractive/Inferential/Articulative interactions. In each case, the substance of how these interactions input conceptual learning is described. Implications for future research and for teaching are given.; As simulações computacionais desempenharam um papel significativo no desenvolvimento da física e também na educação em física. Pesquisadores têm se perguntado se as simulações promovem a aprendizagem, mas poucos estudos investigaram como as simulações realmente participam dos processos de aprendizagem. Este estudo busca descrever como as simulações participam da aprendizagem conceitual. Foi realizado um estudo de caso utilizando entrevistas gravadas em vídeo com três grupos de estudantes de graduação enquanto eles resolvem uma tarefa sobre termodinâmica (ciclos de Carnot). Os estudantes utilizam uma simulação especificamente desenvolvida para dar suporte à tarefa. A análise é baseada na Teoria das Classes de Coordenação (TCC). Os resultados indicam que os estudantes não apenas utilizam a simulação para pensar; ela é, na verdade, parte do que eles pensam. Foi observado que os estudantes se engajam em três dinâmicas diferentes de interação com a simulação. De acordo com a TCC, essas interações foram codificadas como interações Extrativa/Inferencial/Articulada. Em cada caso, descreve-se como a substância dessas interações contribui para a aprendizagem conceitual. São apresentadas implicações para futuras pesquisas e para o ensino.

Assessing traditional and machine learning methods to smooth and impute device-based body condition score throughout the lactation in dairy cows Chelotti, Jose Omar; Atashi, H.; Ferrero, Mariano; Grelet, C.; Soyeurt, H.; Giovanini, Leonardo Luis; Rufiner, Hugo Leonardo; Gengler, N. Regular monitoring of body condition score (BCS) changes during lactation is an essential management tool in dairy cattle; however, the current BCS measurements are often discontinuous and unevenly spaced in time. The imputation of BCS values is useful for two main reasons: i) achieving completeness of data is necessary to be able to relate BCS to other traits (e.g. milk yield and milk composition) that have been routinely recorded at different times and with a different frequency, and ii) having expected BCS values provides the possibility to trigger early warnings for animals with certain unexpected conditions. The contribution of this study was to propose and evaluate potential methods useful to smooth and impute device-based BCS values recorded during lactation in dairy cattle. In total, 26,207 BCS records were collected from 3,038 cows (9,199 and 14,462 BCS records on 1,546 Holstein and 1,211 Montbéliarde cows respectively, and the rest corresponded to other minority cattle breeds). Six methods were evaluated to predict BCS values: the traditional methods of test interval method (TIM), and multiple-trait procedure (MTP), and the machine learning (ML) methods of multi-layer perceptron (MLP), Elman network (Elman), long-short term memories (LSTM) and bi-directional LSTM (BiLSTM). The performance of each method was evaluated by a hold-out validation approach using statistics of the root mean squared error (RMSE) and Pearson correlation (r). TIM, MTP, MLP, and BiLSTM were assessed for the imputation of intermediate missing values, while MTP, Elman, and LSTM were evaluated for the forecasting of future BCS values. Regarding the machine learning methods, BiLSTM demonstrated the best performance for the intermediate value imputation task (RMSE = 0.295, r = 0.845), while LSTM demonstrated the best performance for the future value forecasting task (RMSE = 0.356, r = 0.751). Among the methods evaluated, MTP showed the best performance for imputation of intermediate missing values in terms of RMSE (0.288) and r (0.856). MTP also achieved the best performance for forecasting of future BCS values in terms of RMSE (0.348) and r (0.760). This study demonstrates the ability of MTP and machine learning methods to impute missing BCS data and provides a cost-effective solution for the application area.

Osteology, relationship, and feeding ecology of the theropod dinosaur Noasaurus leali Bonaparte and Powell, 1980, from the Late Cretaceous of North-Western Argentina Hendrickx, Christophe Marie Fabian; Cerroni, Mauricio Andrés; Agnolin, Federico; Catalano, Santiago Andres; Ribeiro, Cátia F.; Delcourt, Rafael Noasaurus leali is a small (~2 m) carnivorous theropod and the nominal genus of the clade Noasauridae, one of the two radiations of abelisauroid ceratosaurs predominantly present in the Southern Hemisphere during the Mesozoic. This eponymous theropod from the Maastrichtian Lecho Formation of Salta, Argentina, is known from an incomplete skeleton of which the strongly curved manual ungual is the most peculiar element. We here provide for the first time a comprehensive description of the holotypic specimens of Noasaurus, whose phylogenetic position was explored using three independent datamatrices on theropod relationships. This species is diagnosed by several apomorphies such as a dorsal ridge in the maxillary fossa, a strongly arched quadrate, a cervical neural arch with anterior epipophyseal prongs, and a manual ungual with a subtriangular flexor fossa delimited by a V-shaped ridge. Results of the phylogenetic analyses recovered Noasaurus closely related to Velocisaurus, Masiakasaurus, and Laevisuchus, which together form a Late Cretaceous radiation of small-bodied noasaurids restricted to the Southern Hemisphere. The peculiar morphology of the lateral dentition and manual unguals suggests that Noasaurus was an opportunistic carnivore feeding on small prey items and a possible piscivore gaffing fish with its specialized hand claws.