Reportes, informes y documentos de trabajo

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    A Supernova Candidate from the Siding Spring Survey
    (2010) Drake, A. J.; Djorgovski, S. G.; Mahabal, A. A.; Graham, M. J.; Williams, R.; Prieto, J.; Catelan , Marcio; Christensen, E.; McNaught, R.; Garradd, G.; Beshore, E. C.; Larson, S. M.
    We report the discovery of the first supernova candidate from the Siding Spring Survey (SSS) by the Catalina Real-time Transient Survey (CRTS). The detection has the following details: <table border=1 width=650 align=center> <tr><th>ID</th><th>Disc. Date</th><th>RA</th><th>Dec</th><th>Disc. Mag</th></tr> <tr align=center><td><a href='http://crts.caltech.edu/ATEL/SSS/1005080151534122262.atel.html'> SSS100508:210144-143830</a></td><td> 2010-05-08 </td><td> 21:01:44.10 </td><td> -14:38:30.5 </td><td> 16.4</tr> </table> The host galaxy, 2MFGC 15924 (=PGC 187888), has redshift z=0.0275 (Jones et al....
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    Benchmarking the Covid-19 pandemic across countries and states in the USA under heterogeneous testing
    (2020) Asahi Kodama, Kenzo Javier; Undurraga Fourcade, Eduardo Andrés; Wagner, Rodrigo; CEDEUS (Chile)
    Public health officials need to make urgent decisions to reduce the potential impact of the CoVID-19 pandemic. Benchmarking based on the increase in total cases or case fatality rates is one way of comparing performance across countries or territories (such as states in the USA), and could inform policy decisions about COVID-19 mitigation strategies. But comparing cases and fatality across territories is challenging due to heterogeneity in testing and health systems. We show two complementary ways of benchmarking across countries or US states. First, we used multivariate regressions to estimate the test-elasticity-of-COVID-19-case-incidence. We found a 10% increase in testing yielded ~9% (95% CI:4.2–3.4%; p<0.001) increase in reported cases across countries, and ~2% (95%CI:0.1-3.4%; p=0.03) increase across US states during the week ending April 10th, 2020. We found comparable negative elasticities for fatality rates (across countries: β =-0.77, 95%CI:-1.40– -0.14; p=0.02; US states: β=-0.15, 95%CI:-0.30-0.01; p=0.06). Our results were robust to various model specifications. Second, we decomposed the growth in cases into test growth and positive test ratio (PTR) growth to intuitively visualize the components of case growth. We hope these results can help support evidence-based decisions by public health officials as more consistent data hopefully becomes available.
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    El Auge de las Cerezas Chilenas y el Desafío del Mercado Chino
    (Núcleo Milenio de los Impactos de China en América Latina ICLAC, 2024) Montt Strabucchi, María; Urdinez, Francisco; Aguirre Araya, Italo Andre; Matamala, Gonzalo
    En los últimos años Chile ha experimentado un notable auge en la producción de cerezas. Factores como el crecimiento constante en la superficie cultivada, la cantidad exportada y el valor de las exportaciones son prueba de esta tendencia. A su vez, China ha emergido como el principal destino de las cerezas chilenas en el mercado internacional, acaparando más del 90% de las exportaciones cada temporada. Esta prominente preferencia se debe en gran medida al elevado precio que los consumidores chinos están dispuestos a pagar por las cerezas, especialmente durante el Año Nuevo Chino debido al significativo valor cultural que tiene este fruto. En este contexto, el sector productor chileno alberga expectativas optimistas, anticipando que los altos precios se mantendrán y que la producción continuará expandiéndose a corto plazo. De hecho, en ciertos círculos especializados, ha surgido la idea de que Chile no sería capaz de satisfacer la demanda china incluso si se duplicara la superficie plantada de cerezos. No obstante, algunos actores de la industria expresan preocupación por la concentración excesiva del mercado y temen un posible comportamiento adverso por parte de China como retaliación ante alguna crisis bilateral. Asimismo, las posibles dificultades a corto plazo no se relacionan tanto con la demanda de cerezas como con la oferta, ya que en Chile comienzan a surgir señales que indican que el desarrollo agroindustrial podría estar alcanzando sus límites, debido principalmente al estrés hídrico y la falta de mano de obra.
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    Estigmatización territorial y la (re)construcción histórica del “enemigo interno” en Santiago de Chile: análisis de noticias a través de técnicas de minería de texto
    (2021) Ruiz-Tagle, Javier; Álvarez, Martín; Salas, Roberto; Pontificia Universidad Católica de Chile. Instituto de Estudios Urbanos
    En el presente documento de trabajo presentamos un análisis preliminar de una investigación en curso sobre estigmatización territorial en poblaciones marginales de Santiago de Chile. En dicha investigación, utilizamos una amplia base de datos de noticias históricas del diario El Mercurio, y estudiamos el tipo y nivel de estigmatización que emana del contenido de tales noticias, a través de instrumentos de minería de texto. Así, dividimos el documento en cuatro partes. En una primera parte, describimos los elementos básicos de la teoría acerca de la estigmatización territorial. En una segunda parte, detallamos la metodología utilizada y el contexto sociohistórico de las poblaciones estudiadas. En una tercera parte entregamos varios resultados descriptivos, y en una última parte reflexionamos brevemente sobre la construcción de noticias de prensa desde una perspectiva histórica.
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    Inflammatory back pain for diagnosis of axial psoriatic arthritis: a systematic review and meta-analysis (Protocol)
    (2024) Díaz Álvarez, Pamela Alejandra; Briones Carvajal, Juan Rodrigo; Taylor, Kathryn
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    Informe I. El fenómeno de la desinformación: Revisión de experiencias internacionales y en Chile
    (Comité Asesor contra la Desinformación, 2023) Anguita, Pedro; Bachmann C., Ingrid; Brossi, Lionel; Elórtegui, Claudio; Escobar, María José; Ibarra, Paulina; Lara, J. Carlos; Padilla, Fabián; Peña, Patricia
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    Informe II. Recomendaciones para contrarrestar la desinformación en Chile
    (Comité Asesor contra la Desinformación, 2023) Anguita, Pedro; Bachmann C., Ingrid; Elórtegui, Claudio; Escobar, María José; Faure, Antoine; Ibarra, Paulina; Lara, J. Carlos; Padilla, Fabián; Peña, Patricia
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    La co-producción del usuario en los servicios públicos
    (Laboratorio de Innovación Pública, 2017) Tello Escobar, Cristóbal José; Fulgueiras, Mariana; Figueroa C., Bernardita; Mollenhauer Gajardo, Katherine Alexandra; Negrete Montero, Sebastián Andrés; Wuth Izquierdo, Paula; Zurob Dreckmann, Carola; Cea Martínez, Macarena F.; Irarrázaval Llona, Ignacio; Pacheco Flanagan, Sol
    Documento preparado por nuestra iniciativa Laboratorio de Innovación Público para el Taller Diálogo de Mejora de la Gestión de Servicios Públicos, organizado por el Banco Interamericano de Desarrollo (BID) y el Programa de Modernización del Sector Público del Ministerio de Hacienda y desarrollado en junio de 2017. Para la ocasión, el LIP elaboró el documento de trabajo “La co-producción del usuario en los servicios públicos”, que aborda el rol que tiene el usuario en los servicios públicos, el que no se reduce a ser solo beneficiario, sino que es co-productor del servicio en conjunto con el Estado.
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    Millennials en América Latina y el Caribe: ¿Trabajar o estudiar? (Resumen ejecutivo)
    (2018) Novella, Rafael; Repetto Lisboa, Andrea; Robino, Carolina; Rucci, Graciana; Banco Interamericano de Desarrollo (BID); Universidad de Oxford (Oxford Department of International Development & the Centre on Skills, Knowledge and Organisational Performance)
    Youth is a critical stage in people's lives: a transition period in which transcendental decisions have to be made in many areas, especially in education and work. Knowing what lies behind the choice between studying and working, or the combination of both, allows to assist, through the formulation of public policies, those who seek to ensure a better future for the next generation of workers in Latin America and the Caribbean (LAC). ). This objective is a priority due to changes in the labor market, marked by the emergence of new technological advances that threaten to automate tasks and occupations.
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    Myokines secretion and their role in critically ill patients. A scoping review protocol
    (2021) Jalil Contreras, Yorschua Frederick; Gutiérrez, Ruvistay
    Review question / Objective: 1-How and by which means stimulated muscle from critically ill patients can liberate myokines?, 2-Which are the main characteristics of the critically ill population studied and if some of these influenced myokine´s secretion?, 5-Can myokines exert local or distant effects in critically ill patients?, 5-Which are the potential effects of myokines in critically ill patients?
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    Nonlinear time-series forecasts for decision support: short-termdemand for ICU beds in Santiago, Chile, during the 2021COVID-19 pandemic
    (2022) Quiroga Gómez, Bernardo Francisco; Vásquez, Cristián; Vicuña Loyola, María Ignacia
    In Chile, due to the explosive increase of new Coronavirus disease 2019 (COVID-19) cases during the first part of 2021, the ability of health services to accommodate new incoming cases was jeopardized. It has become necessary to be able to manage intensive care unit (ICU) capacity, and for this purpose, monitoring both the evolution of new cases and the demand for ICU beds has become urgent. This paper presents short-term forecast models for the number of new cases and the number of COVID-19 patients admitted to ICUs in the Metropolitan Region in Chile.
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    Powering Up productivity: the effects of electrification on U.S. manufacturing
    Fiszbein, Martin ; Lafortune, Jeanne; Lewis, Ethan G.; Tessada, José
    We use 1890-1940 sector-county level data to identify the impact of electricity on manufacturing industries, exploiting pre-electrification variation in energy intensity across industries combined with variation across locations in proximity to early hydroelectric power plants. We find that labor productivity gains from electricity were rapid and long-lasting, in contrast with established narratives. Electrification was quickly accompanied by capital deepening and organizational changes that may have contributed to these gains. Impacts varied with market structure: productivity increased without expanding employment in sector-county cells with large initial firm size, while, in contrast, both output and employment increased in cells with small initial firm size.
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    Resumen de políticas: Evidencias para mejorar la tasa de vacunación del adulto mayor
    (2018) Pérez Bracchiglione, Javier; Bravo Rojas, Gonzalo Sebastián; Madrid, Eva; Meza, Nicolás; Olguín, Pablo; Ortiz Muñoz, Luis Eugenio; Arancibia, Marcelo; Vergara, Laura; Loézar, Cristóbal; Papuzinski, Cristián; Verdejo, Catalina; Morel Marambio, Juana Macarena; Villarroel, Bastián; Ramírez, Muriel; Cortés, Marcela; Rada Giacaman, Gabriel Alejandro
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    Supernova 2010gu
    (2010) McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.McNaught, R. H.; Garradd, G.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.
    Further to CBET 2387, R. H. McNaught and G. Garradd, Australian National University; A. J. Drake, S. G. Djorgovski, A. Mahabal, M. J. Graham, and R. Williams, California Institute of Technology; J. L. Prieto, Carnegie Observatories; M. Catelan, Pontificia Universidad Catolica de Chile; E. C. Beshore and S. M. Larson, Lunar and Planetary Laboratory, University of Arizona; and E. Christensen, Gemini Observatory, report the CRTS discovery of an apparent supernova in unfiltered Siding Spring Survey (SSS) images: SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010gu Aug. 7.67 22 19 23.16 -36 58 24.5 18.0 7".0 E, 3".3 N Further SSS magnitudes for 2010gu: July 9.81, [19.5; Aug. 10.76, 17.9. The host galaxy, 2MASX J22192259-3658278, has redshift z = 0.056....
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    Supernova 2010hj in Pgc 67413
    (2010) Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; McNaught, R. H.; Garradd, G.; Howerton, S.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.
    Report the discovery of an apparent supernova in unfiltered Siding Spring Survey (SSS) images: SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010hj Aug. 4.61 21 49 09.84 -59 02 23.2 17.1 5".5 W, 8".2 S Nothing was visible at this position on an SSS image from 2009 Oct. 1.50 UT (limitiing mag 18.9), but 2010hj was detected again in SSS images on Aug. 29.59 (no magnitude provided). The host galaxy appears to be PGC 67413 = ESO 145-G16. Joseph Brimacombe, Cairns, Australia, reports that ten stacked 600-s CCD images (limiting magnitude 20) taken remotely with a 32-cm RCOS telescope (+ STL6K camera + clear filter) at the Macedon Ranges Observatory near Melbourne, Australia, on Aug. 29.727 show the new object to be at mag 18.3 and located approximately 7" west and 7" south of the presumed host-galaxy nucleus. Another stacked image (seven 1200-s frames; limiting magnitude 20), taken by Brimacombe on Sept. 2.636 with a 40-cm RCOS telescope (+ U16 camera + red filter) at the Coral Towers Observatory (Cairns), yields mag 18.6 for 2010hj; the Sept. 2 stacked image has been posted at the following website URL: http://www.flickr.com/photos/43846774@N02/4952444311/....
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    Supernova 2010iw near UGC 4570
    (2010) Howerton, C.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.
    Report the discovery by Howerton of an apparent supernova in public Catalina Sky Survey (CSS) images: SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010iw Oct. 14.66 8 45 15.01 +27 49 21.8 16.4 12".9 W, 3".4 S Further magnitudes for 2010iw: June 11.16 UT, [19.0 (CSS); Oct. 17.50, 16.3 (Howerton, remotely with a 0.6-m LB-1 telescope, Rodeo, NM, U.S.A.). They note that the new object lies 5".4 east and 1".1 north from a galaxy seen in Sloan Digital Sky Survey images with measured redshift z = 0.109; the current luminosity of 2010iw appears too high for it to be a regular supernova associated with this distant galaxy. The host galaxy is thus is likely to be UGC 4570 (at redshift z = 0.0215)....
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    Supernova 2010jt
    (2010) Howerton, S.; Drake, A. J.; Djorgovski, S. G.; Mahabal, A.; Graham, M. J.; Williams, R.; McNaught, R. H.; Garradd, G.; Prieto, J. L.; Catelan , Marcio; Beshore, E. C.; Larson, S. M.; Christensen, E.
    Report the discovery of an apparent supernova in Siding Spring Survey (SSS) images made public via the "Catalina Real-time Transient Survey" program: SN 2010 UT R.A. (2000.0) Decl. Mag. Offset 2010jt Nov. 6.57 23 43 41.24 -41 18 46.9 19.0 20".5 E, 29".6 N Further SSS magnitudes for 2010jt: Oct. 18.51 UT, [20.5 (co-added image); Nov. 7.50, 19.0. The likely host galaxy, 6dFGS gJ234339.4-411917, has redshift z = 0.053....