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This paper reviews the professional situation of school principals during COVID-19 in Argentina, where one of the longest school closures in the world was maintained. It analyzes the existence of burnout, concerns, constraints and needs of 252 principals at the end of the 2020 school year. The results indicate that there is a double phenomenon of Emotional Exhaustion and Personal Accomplishment, while tensions with regulations and working conditions are evidenced. We found a leadership open to the context, with greater autonomy and a strong emotional commitment, with implications and challenges for the post-pandemic future.

This paper reviews the professional situation of school principals during COVID-19 in Argentina, where one of the longest school closures in the world was maintained. It analyzes the existence of burnout, concerns, constraints and needs of 252 principals at the end of the 2020 school year. The results indicate that there is a double phenomenon of Emotional Exhaustion and Personal Accomplishment, while tensions with regulations and working conditions are evidenced. We found a leadership open to the context, with greater autonomy and a strong emotional commitment, with implications and challenges for the post-pandemic future. [ABSTRACT FROM AUTHOR]

Lima bean (Phaseolus lunatus L.), one of the five domesticated Phaseolus bean crops, shows a wide range of ecological adaptations along its distribution range from Mexico to Argentina. These adaptations make it a promising crop for improving food security under predicted scenarios of climate change in Latin America and elsewhere. In this work, we combine long and short read sequencing technologies with a dense genetic map from a biparental population to obtain the chromosome-level genome assembly for Lima bean. Annotation of 28,326 gene models show high diversity among 1917 genes with conserved domains related to disease resistance. Structural comparison across 22,180 orthologs with common bean reveals high genome synteny and five large intrachromosomal rearrangements. Population genomic analyses show that wild Lima bean is organized into six clusters with mostly non-overlapping distributions and that Mesomerican landraces can be further subdivided into three subclusters. RNA-seq data reveal 4275 differentially expressed genes, which can be related to pod dehiscence and seed development. We expect the resources presented here to serve as a solid basis to achieve a comprehensive view of the degree of convergent evolution of Phaseolus species under domestication and provide tools and information for breeding for climate change resiliency. Lima bean is an important crop for improving food security in Latin America and elsewhere. Here, the authors assemble its genome, conduct population genomics analysis using genotyping-by-sequencing data, and identify differentially expressed genes between two pod developmental stages. [ABSTRACT FROM AUTHOR]

You cannot put in order forgetfulness, but the exercise of memory always implies a selection. Also, in the imperative to remember, transitivity is almost compulsory: what to remember? In previous works (Zullo, 2013, 2014), we explore what recontextualizations (Bernstein, 1998; Van Leeuwen, 1993) of the last Argentine military-civic dictatorship (1976-1982) are put into play in various pedagogical materials produced for students of initial and primary schools. At this stage of the investigation, we are interested in tackling a more specific problem: how school materials present the question of children born in captivity or kidnapped during those years. Firstly, we analyze one of the microprograms pertaining to the series Así soy yo (produced by the organization Abuelas de Plaza de Mayo and the educational television channel Paka-Paka) from a multimodal sociosemiotic perspective (Hodge, 2017). Secondly, we focus on accounting for the conditions of circulation of these microprograms as from the year 2015. To conclude, we integrate the results of the analysis and reflect on the circumstances that make possible the conditions of existence, permanence and constant renewal of memory processes closely linked to the formation of individual and collective identities in contemporary Argentina. [ABSTRACT FROM AUTHOR]

The region of the Andean back-arc of northwestern Argentina has been struck by several magnitude ≥6 crustal earthquakes since the first historically recorded event in 1692. One of these events corresponds to the Anta earthquake on 25 August 1948, with epicenter in the Santa Bárbara System causing three deaths and severe damage in Salta and Jujuy provinces with maximum Modified Mercalli seismic intensities (MMI) of IX. We collected and digitized analog seismograms of this earthquake from worldwide seismic observatories in order to perform first-motion analysis and modeling of long-period teleseismic P-waveforms. Our results indicate a simple seismic source of M0 = 2.85 × 1019 N m consistent with a moment magnitude Mw = 6.9. We have also tested for the focal depth determining a shallow source at 8 km with a reverse focal mechanism solution with a minor dextral strike-slip component (strike 20°, dip 30°, rake 120°) from the best fit of waveforms. Using magnitude-size empirical relationships, the comparison of the obtained Mw 6.9 magnitude value and the ca. 10,000 km2 area of MMI ≥ IX from our seismic intensity map, which was obtained from newspaper and many historical reports, indicates a rupture length of 42 ± 8 km for the Anta earthquake. We show our results in a 3D geological model around the epicentral area, which integrates modern seismicity, geological data, and information of a previously studied east-west cross section located a few kilometers south of the 1948 epicenter. The integration of all available information provides evidence of the re-activation of the Pie de la Sierra del Gallo fault during the 1948 Mw 6.9 shallow earthquake; this thrust fault bounds the Santa Bárbara System along its western foothill. • The 1948 Anta (Salta) earthquake is the largest shallow event instrumentally recorded in northwestern Argentina. • Our results indicate a simple seismic source of M 0 = 2.85 × 1019 N · m consistent with a moment magnitude M W = 6.9 • We obtained a reverse focal mechanism solution with a minor dextral strike-slip component (strike 20°, dip 30°, rake 120°). • Our results indicate a focal depth of 8 km (−2 and +3 km). • The 1948 earthquake is associated with a thrust fault of N–S tending and shallow dip of 30° to the east. [ABSTRACT FROM AUTHOR]