At The End of The World: Transnational Ethnography of Chilotes Migration in Ushuaia, Tierra del Fuego, Argentina

El artículo muestra hallazgos etnográficos sobre las experiencias migratorias de los chilotes en Ushuaia, Tierra del Fuego, Argentina, entre los años 1947-2018. El objetivo de este trabajo es comprender las estrategias creativas que diseñaron los chilotes en sus procesos de asentamiento, asociadas con la formación de comunidades, la resignificación de la noción de hogar y la circulación de mercancías de la nostalgia. El enfoque metodológico siguió la perspectiva de la etnografía multisituada que consistió en el desarrollo de un trabajo de campo entre Chiloé y Ushuaia, recolectando información mediante la revisión de docu- mentos históricos, entrevistas en profundidad y mesas redondas. Los resultados muestran las etapas de asentamiento chilote después del cierre del presidio en 1947 y sus efectos en los procesos de consolidación de la comunidad a mediados de 1990.The article shows etnhographic findings on the migratory experiences of chilotes in Ushuaia, Tierra del Fuego, Argentina, between the years 1947-2018. The objective of this work is to understand the creative strategies that the chilotes designed in their settlement processes, associated with the formation of communities, the re-signification of the notion of home and the circulation of nostalgia merchandise. The methodological approach followed the perspective of multi-sited ethnography, wich consisted in the development of fieldwork between Chiloé and Ushuaia, collecting information through the review of Historical docu- ments, in-depth interviews and round tables. The results show the stage of chilote settle- ment after the closure of the prisión in 1947 and its effects on the consolidation processes of the community in the middle 1990’s

Diseño y desarrollo de una aplicación móvil de monitoreo y seguimiento para escolares

Hoy en día un amplio porcentaje de niños y jóvenes cuentan con teléfonos celulares con conectividad a internet que utilizan a diario y llevan consigo la mayor parte del tiempo. Estos equipos son en su mayoría de gama media y cuentan al menos con la posibilidad de ser geolocalizados por GPS y/o triangulación de señal celular. Sacando provecho de esas características se diseña y desarrolla una aplicación móvil denominada Vigia Escolar. Esta aplicación permite a los padres monitorizar de una forma no invasiva el recorrido de sus hijos para estar tranquilos de que llegan a destino y no se desvían de la ruta establecida. Utilizando la técnica de geofencing, Vigia Escolar permite definir corredores y zonas seguras emitiendo alertas para prevenir inconvenientes.Eje: Innovación en sistemas de software.Red de Universidades con Carreras en Informátic

Desarrollo de una aplicación de geofencing en android para monitoreo de corredores estudiantiles

Las amplias capacidades de los dispositivos móviles actuales hacen posible el desarrollo de aplicaciones que sirvan para traer mayor seguridad y tranquilidad a sus usuarios. Este proyecto plantea el desarrollo de una aplicación de monitoreo de estudiantes que utilizan ciertos corredores seguros para ir y volver desde su casa hasta el lugar de destino que puede ser el colegio, un club, la casa de un amigo, etc. Esta aplicación es especialmente útil para niños jóvenes que comienzan a movilizarse por su cuenta donde sus padres muchas veces se preocupan por su seguridad. Esta aplicación proporciona un monitoreo no invasivo alertando si se produce un desvío de / los caminos preestablecidos, así como también al entrar o salir a un área determinada en un horario no esperado utilizando técnicas de geofencing. La aplicación consta de un backend de configuración web y una aplicación móvil con la cual se realiza el monitoreo utilizando la geolocalización de los dispositivos móviles.Red de Universidades con Carreras en Informátic

Caracterización fenotípica del ganado criollo en el Parque nacional Huascarán – Ancash

The aim of this study was to evaluate the phenotypic characteristics of the Creole cattle of the Huascarán National Park (PNH), Ancash, Peru through zoometric measurements and indexes of productive interest. The study was conducted in a population of Creole cattle in the Llanganuco zone of the PNH. Data were collected from 32 cows bovines. The zoometric measurements were head width (AC), head length (LC), chest girth (PT), body length (LCU), height withers (ALC) and height at the rump (ALG), anterior rump width (AAG), rear rump with (APG) and rump length (LG). Indexes related to meat ability were calculated: transversal pelvic index (IPT) and longitudinal pelvic index (IPL), and ethnological indexes: anamorphosis index (AI), corporal index (IC), pelvic index (PI) and proportionality index (IPR). The data were processed with the statistical program R. The colour and pattern of the coat were registered applying the nomenclature for Spanish bullfighting cattle. The zoomometric measurements showed a low CV (4.29 – 9.25), except for APG (14.75), reflecting morphological uniformity in the sample. The zoometric indices showed CV less than 10% (5.89 – 7.11), except for the AI ​​(16.28) and IC (11.5). As for the coat, a tendency towards simple colours (46.9%) with a predominance of black was observed. In general, the Creole bovine of the Quebrada de Llanganuco presents similar indexes with the Creole bovine from Ayacucho, Peru, classifying it as a short-bodied animal.El objetivo del presente estudio evaluar las características fenotípicas del ganado criollo del Parque Nacional Huascarán (PNH), Ancash, Perú, mediante la determinación de mediciones zoométricas e índices de interés productivo. El estudio se realizó en una población de bovinos criollos en la quebrada de Llanganuco del PNH. Se colectaron datos de 32 bovinos hembra adultos. Las medidas zoométricas tomadas fueron ancho (AC) y largo (LC) de cabeza, perímetro torácico (PT), largo de cuerpo (LCU), alzada a la cruz (ALC) y a la grupa (ALG), ancho anterior (AAG) y posterior de grupa (APG) y largo de grupa (LG). Se calcularon índices asociados a capacidad cárnica: índice pelviano transversal (IPT) e índice pelviano longitudinal (IPL), e índices etnológicos: índice de anamorfosis (IA), índice corporal (IC), índice pelviano (IP) e índice de proporcionalidad (IPR). Los datos fueron procesados con el programa estadístico R. Se registró el color y patrón del pelaje aplicando la nomenclatura para ganado de lidia. Las medidas zoométricas mostraron un bajo CV (4.29 – 9.25), excepto para APG (14.75), reflejando uniformidad morfológica en la muestra. Los índices zoométricos mostraron CV menores al 10% (5.89 – 7.11), excepto para el IA (16.28) e IC (11.5). En el pelaje se observó una tendencia hacia los colores simples (46.9%) con predominio del negro. En general, el bovino criollo de la Quebrada de Llanganuco presenta índices similares con el bovino criollo de Ayacucho, Perú, clasificándolo como un animal brevilíneo

Isquemia mesentérica: manejo endovascular

Mesenteric ischaemia is a condition that may be very severe and potentially lethal particularly in the acute presentation. Early treatment is crucial. We present four consecutive cases managed by our team with thrombosis or dissection or aneurysm of the superior mesenteric artery and the celiac trunk reviewing indications and treatment implemented. Multiple successful endovascular procedures were used in all cases avoiding progression to lethal consequences. None of the patients required an open surgical procedure. Therefore, endovascular procedures are feasible in these patients avoiding intestinal necrosis as well as the need for open surgeries.La isquemia mesentérica es una condición que puede volverse muy grave y ser letal, más aún en los casos agudos. Un tratamiento precoz es muy importante. Se presentaron cuatro casos consecutivos tratados por nuestro equipo con trombosis, o disección o aneurismas de arterias mesentérica superior y tronco celíaco, se revisaron las indicaciones y se evaluaron los tratamientos llevados a cabo. Se utilizaron procedimientos endovasculares en todos, técnicamente en forma exitosa, evitando que progrese a un desenlace peligroso. Hubo diversidad de técnicas endovasculares adaptándolas a cada caso. En ningún paciente se requirió un acceso quirúrgico abierto para completar el tratamiento realizando las intervenciones prontas. El manejo endovascular de las lesiones mesentéricas es factible y replicable, y en nuestros casos podría haber prevenido una necrosis intestinal así como la necesidad de cirugías resectivas

Hazardous faults of South America; compilation and overview

The heterogeneous South American geology has coined a wide variety of neotectonic settings where crustal seismogenic sources do occur. This fact has led to different approaches for mapping and inventory neotectonic structures. The South American Risk Assessment project promoted the discussion and update under uniform standards of the available information on neotectonic deformation, for its application in regional Probabilistic Seismic Hazard Assessments. As a result, 1533 hazardous faults have been inventoried onshore South America, 497 of them qualifying to feed the engine model driving probabilistic maps. Main hazardous structures are concentrated throughout the eastern boundary of the Northern Andean Sliver and along the foreland-facing Andean Thrust Front. Space geodesy and seismicity illuminate the seismogenic significance of these deformation belts, although few neotectonic surveys have been conducted to date in the latter region. The characteristics of the main structures or deformation zones are here outlined according to their filiation to neotectonic domains, which are dependant on the geologic, seismotectonic, or morphotectonic settings in Andean and extra-Andean regions. The knowledge accrued on the hazardous faults in South America here compiled, reinforces the fact that some of these structures constitute significant hazard sources for many urban areas and critical facilities and should be incorporated in seismic hazard assessments. However, the available fault data are insufficient in many cases or carry significant epistemic uncertainties for fault source characterization. This contribution aims to summarize the present knowledge on the South American hazardous faults as well as the main challenges for successful fault data incorporation into seismic hazard models

The miniJPAS survey. Evolution of the luminosity and stellar mass functions of galaxies up to z∼0.7z \sim 0.7

We aim at developing a robust methodology for constraining the luminosity and stellar mass functions (LMFs) of galaxies by solely using data from multi-filter surveys and testing the potential of these techniques for determining the evolution of the miniJPAS LMFs up to $z\sim0.7$. Stellar mass and $B$-band luminosity for each of the miniJPAS galaxies are constrained using an updated version of the SED-fitting code MUFFIT, whose values are based on composite stellar population models and the probability distribution functions of the miniJPAS photometric redshifts. Galaxies are classified through the stellar mass versus rest-frame colour diagram corrected for extinction. Different stellar mass and luminosity completeness limits are set and parametrised as a function of redshift, for setting limits in our flux-limited sample ($r_\mathrm{SDSS}<22$). The miniJPAS LMFs are parametrised according to Schechter-like functions via a novel maximum likelihood method accounting for uncertainties, degeneracies, probabilities, completeness, and priors. Overall, our results point to a smooth evolution with redshift ($0.05<z<0.7$) of the miniJPAS LMFs in agreement with previous work. The LMF evolution of star-forming galaxies mainly involve the bright and massive ends of these functions, whereas the LMFs of quiescent galaxies also exhibit a non-negligible evolution on their faint and less massive ends. The cosmic evolution of the global $B$-band luminosity density decreases ~0.1 dex from $z=0.7$ to 0, whereas for quiescent galaxies this quantity roughly remains constant. In contrast, the stellar mass density increases ~0.3 dex at the same redshift range, where such evolution is mainly driven by quiescent galaxies owing to an overall increasing number of this kind of galaxies, which in turn includes the majority and most massive galaxies (60-100% fraction of galaxies at $\log_{10}(M_\star/M_\odot)>10.7$).Comment: 31 pages, 15 figures. Submitted to A&

The miniJPAS survey: Identification and characterization of the emission line galaxies down to z<0.35z < 0.35 in the AEGIS field

The Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) is expected to map thousands of square degrees of the northern sky with 56 narrowband filters in the upcoming years. This will make J-PAS a very competitive and unbiased emission line survey compared to spectroscopic or narrowband surveys with fewer filters. The miniJPAS survey covered 1 deg$^2$, and it used the same photometric system as J-PAS, but the observations were carried out with the pathfinder J-PAS camera. In this work, we identify and characterize the sample of emission line galaxies (ELGs) from miniJPAS with a redshift lower than $0.35$. Using a method based on artificial neural networks, we detect the ELG population and measure the equivalent width and flux of the $H\alpha$, $H\beta$, [OIII], and [NII] emission lines. We explore the ionization mechanism using the diagrams [OIII]/H$\beta$ versus [NII]/H$\alpha$ (BPT) and EW(H$\alpha$) versus [NII]/H$\alpha$ (WHAN). We identify 1787 ELGs ($83$%) from the parent sample (2154 galaxies) in the AEGIS field. For the galaxies with reliable EW values that can be placed in the WHAN diagram (2000 galaxies in total), we obtained that $72.8 \pm 0.4$%, $17.7 \pm 0.4$% , and $9.4 \pm 0.2$% are star-forming (SF), active galactic nucleus (Seyfert), and quiescent galaxies, respectively. Based on the flux of $H\alpha$ we find that the star formation main sequence is described as $\log$ SFR $[M_\mathrm{\odot} \mathrm{yr}^{-1}] = 0.90^{+ 0.02}_{-0.02} \log M_{\star} [M_\mathrm{\odot}] -8.85^{+ 0.19}_{-0.20}$ and has an intrinsic scatter of $0.20^{+ 0.01}_{-0.01}$. The cosmic evolution of the SFR density ($\rho_{\text{SFR}}$) is derived at three redshift bins: $0 < z \leq 0.15$, $0.15 < z \leq 0.25$, and $0.25 < z \leq 0.35$, which agrees with previous results that were based on measurements of the $H\alpha$ emission line.Comment: 22 pages, 19 figure

J-NEP: 60-band photometry and photometric redshifts for the James Webb Space Telescope North Ecliptic Pole Time-Domain Field

The J-PAS survey will observe ~1/3 of the northern sky with a set of 56 narrow-band filters using the dedicated 2.55 m JST telescope at the Javalambre Astrophysical Observatory. Prior to the installation of the main camera, in order to demonstrate the scientific potential of J-PAS, two small surveys were performed with the single-CCD Pathfinder camera: miniJPAS (~1 deg2 along the Extended Groth Strip), and J-NEP (~0.3 deg2 around the JWST North Ecliptic Pole Time Domain Field), including all 56 J-PAS filters as well as u, g, r, and i. J-NEP is ~0.5-1.0 magnitudes deeper than miniJPAS, providing photometry for 24,618 r-band detected sources and photometric redshifts (photo-z) for the 6,662 sources with r<23. In this paper we describe the photometry and photo-z of J-NEP and demonstrate a new method for the removal of systematic offsets in the photometry based on the median colours of galaxies, dubbed "galaxy locus recalibration". This method does not require spectroscopic observations except in a few reference pointings and, unlike previous methods, is applicable to the whole J-PAS survey. We use a spectroscopic sample of 787 galaxies to test the photo-z performance for J-NEP and in comparison to miniJPAS. We find that the deeper J-NEP observations result in a factor ~1.5-2 decrease in sigma_NMAD (a robust estimate of the standard deviation of the photo-z error) and the outlier rate relative to miniJPAS for r>21.5 sources, but no improvement in brighter ones. We find the same relation between sigma_NMAD and odds in J-NEP and miniJPAS, suggesting sigma_NMAD can be predicted for any set of J-PAS sources from their odds distribution alone, with no need for additional spectroscopy to calibrate the relation. We explore the causes for photo-z outliers and find that colour-space degeneracy at low S/N, photometry artifacts, source blending, and exotic spectra are the most important factors.Comment: 16 pages, 25 figures, accepted for publication in Astronomy and Astrophysic

The miniJPAS survey: clusters and galaxy groups detection with AMICO

Samples of galaxy clusters allow us to better understand the physics at play in galaxy formation and to constrain cosmological models once their mass, position (for clustering studies) and redshift are known. In this context, large optical data sets play a crucial role. We investigate the capabilities of the Javalambre-Physics of the Accelerating Universe Astrophysical Survey (J-PAS) in detecting and characterizing galaxy groups and clusters. We analyze the data of the miniJPAS survey, obtained with the JPAS-Pathfinder camera and covering $1$ deg$^2$ centered on the AEGIS field to the same depths and with the same 54 narrow band plus 2 broader band near-UV and near-IR filters anticipated for the full J-PAS survey. We use the Adaptive Matched Identifier of Clustered Objects (AMICO) to detect and characterize groups and clusters of galaxies down to $S/N=2.5$ in the redshift range $0.05<z<0.8$. We detect 80, 30 and 11 systems with signal-to-noise ratio larger than 2.5, 3.0 and 3.5, respectively, down to $\sim 10^{13}\,M_{\odot}/h$. We derive mass-proxy scaling relations based on Chandra and XMM-Newton X-ray data for the signal amplitude returned by AMICO, the intrinsic richness and a new proxy that incorporates the galaxies' stellar masses. The latter proxy is made possible thanks to the J-PAS filters and shows a smaller scatter with respect to the richness. We fully characterize the sample and use AMICO to derive a probabilistic membership association of galaxies to the detected groups that we test against spectroscopy. We further show how the narrow band filters of J-PAS provide a gain of up to 100% in signal-to-noise ratio in detection and an uncertainty on the redshift of clusters of only $\sigma_z=0.0037(1+z)$ placing J-PAS in between broadband photometric and spectroscopic surveys. The performances of AMICO and J-PAS with respect to mass sensitivity, mass-proxies qualityComment: 15 pages, 12 figures, 3 tables, submitted to A&