Browsing by Author "Carrasco, M."
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- ItemA CENSUS OF STAR-FORMING GALAXIES IN THE Z similar to 9-10 UNIVERSE BASED ON HST plus SPITZER OBSERVATIONS OVER 19 CLASH CLUSTERS : THREE CANDIDATE Z similar to 9-10 GALAXIES AND IMPROVED CONSTRAINTS ON THE STAR FORMATION RATE DENSITY AT Z similar to 9.2(2014) Carrasco, M.; Bouwens, R.; Bradley, L.; Zitrin, A.; Coe, D.; Franx, M.; Zheng, W.; Smit, R.; Host, O.; Infante Lira, Leopoldo
- ItemA survey of land mine detection technology(TAYLOR & FRANCIS LTD, 2009) Robledo, L.; Carrasco, M.; Mery, D.This paper describes the state of the art in land mine detection technology and algorithms. Landmine detection is a growing concern due to the danger of buried landmines to people's lives, economic growth and development. Most of the injured people have no connection with the reason why the mines were placed. There are 50-100 million landmines in more than 80 countries around the world. Deactivation is estimated at 100 000 mines per year, against the nearly 2 million mines laid annually. In this paper we describe and analyse sensor technology available including state-of-the-art technology such as ground penetrating radar (GPR), electromagnetic induction (EMI) and nuclear quadrupole resonance (NQR) among others. Robotics, data processing and algorithms are mentioned, considering support vectors, sensor fusion, neural networks, etc. Finally, we establish conclusions highlighting the need to improve not only the way images are acquired, but the way this information is processed and compared.
- ItemAcute pancreatitis in Chile: a multicenter study on epidemiology, etiology and clinical outcome: retrospective analysis of clinical files(2020) Berger, Z.; Mancilla, C.; Tobar, E.; Morales, M. P.; Baró, M.; Carrasco, M.; Cordero, J.; Cruz, R.; Cruz Urrutia, Ricardo Javier; Lara, C.; Ledesma, S.; Ramírez, G.; Sierralta, A.; Godoy, L.; Valdés, E.
- ItemAdvances on automated multiple view inspection(2006) Mery Quiroz, Domingo Arturo; Carrasco, M.
- ItemAutomated multiple view inspection of metal castings(2007) Mery Quiroz, Domingo Arturo; Carrasco, M.
- ItemAutomatic multiple visual inspection on non-calibrated image sequence with intermediate classifier block(2007) Carrasco, M.; Mery Quiroz, Domingo Arturo
- ItemBifocal Matching Using Multiple Geometrical Solutions(2012) Carrasco, M.; Mery Quiroz, Domingo
- ItemBimodal biometrie person identification system under perturbations(2007) Carrasco, M.; Pizarro, L.; Mery Quiroz, Domingo Arturo
- ItemCLASH : A CENSUS OF MAGNIFIED STAR-FORMING GALAXIES AT z similar to 6-8(2014) Bradley, L.; Zitrin, A.; Coe, D.; Bouwens, R.; Postman, M.; Balestra, I.; Grillo, C.; Monna, A.; Rosati, P.; Carrasco, M.
- ItemCLASH : the concentration-mass relation of galaxy clusters(2015) Merten, J.; Meneghetti, M.; Postman, M.; Umetsu, K.; Zitrin, A.; Medezinski, E.; Nonino, M.; Koekemoer, A.; Melchior, P.; Infante Lira, Leopoldo; Gruen, D.; Moustakas, L.; Bartelmann, M.; Host, O.; Donahue, M.; Coe, D.; Carrasco, M.
- ItemCLASH: THE ENHANCED LENSING EFFICIENCY OF THE HIGHLY ELONGATED MERGING CLUSTER MACS J0416.1-2403(2013) Zitrin, A.; Meneghetti, M.; Umetsu, K.; Broadhurst, T.; Bartelmann, M.; Bouwens, R.; Bradley, L.; Carrasco, M.; Coe, D.; Ford, H.; Kelson, D.; Koekemoer, A. M.; Medezinski, E.; Moustakas, J.; Moustakas, L. A.; Nonino, M.; Postman, M.; Rosati, P.; Seidel, G.; Seitz, S.; Sendra, I.; Shu, X.; Vega, J.; Zheng, W.We perform a strong lensing analysis of the merging galaxy cluster MACS J0416.1-2403 (M0416; z = 0.42) in recent CLASH/HST observations. We identify 70 new multiple images and candidates of 23 background sources in the range 0.7 less than or similar to z(phot) less than or similar to 6.14 including two probable high-redshift dropouts, revealing a highly elongated lens with axis ratio similar or equal to 5:1, and a major axis of similar to 100 '' (z(s) similar to 2). Compared to other well-studied clusters, M0416 shows an enhanced lensing efficiency. Although the critical area is not particularly large (similar or equal to 0.6 square'; z(s) similar to 2), the number of multiple images, per critical area, is anomalously high. We calculate that the observed elongation boosts the number of multiple images, per critical area, by a factor of similar to 2.5x, due to the increased ratio of the caustic area relative to the critical area. Additionally, we find that the observed separation between the two main mass components enlarges the critical area by a factor of similar to 2. These geometrical effects can account for the high number (density) of multiple images observed. We find in numerical simulations that only similar to 4% of the clusters (with M-vir >= 6 x 10(14) h(-1) M-circle dot) exhibit critical curves as elongated as in M0416.
- ItemIs vitamin D supplementation effective for the prevention of falls in elderly people?(2016) Scheel, Franco; Carrasco, M.
- ItemReliability of NIRS portable device for measuring intercostal muscles oxygenation during exercise(2019) Contreras Briceño, Felipe; Espinosa Ramírez, Maximiliano Andrés; Hevia, G.; Llambias, D.; Carrasco, M.; Cerda, F.; López Fuenzalida, Antonio Eduardo; García Cañete, Patricia; Gabrielli, Luigi; Viscor, G.
- ItemSegmentation of welding discontinuities using a robust algorithm(2004) Carrasco, M.; Mery Quiroz, Domingo Arturo
- ItemSpectroscopic characterization of galaxy clusters in RCS-1 : spectroscopic confirmation, redshift accuracy, and dynamical mass-richness relation(2018) Gilbank, D.; Barrientos, Luis Felipe; Ellingson, E.; Blindert, K.; Yee, H.; Anguita, T.; Gladders, M.; Hall, P.; Hertling, G.; Infante Lira, Leopoldo; Yan, R.; Carrasco, M.; Garcia Vergara, Cristina Javiera; Dawson, K.
- ItemStrong lensing analysis of PLCK G004.5-19.5, a Planck -discovered cluster hosting a radio relic at z = 0.52(2014) Carrasco, M.; Sifon, C.; Menanteau, F.; Hughes, J.; Barrientos, Luis Felipe
- ItemThe ALMA Frontier Fields Survey III. 1.1mm emission line identifications in Abell 2744, MACSJ 0416.1-2403, MACSJ 1149.5+2223, Abell 370, and Abell S1063.(2017) González López, Jorge; Bauer, Franz Erik; Aravena, M.; Laporte, Nicolás; Bradley, L.; Carrasco, M.; Carvajal, R.; Demarco, R.; Infante Lira, Leopoldo; Kneissl, R.; Koekemoer, A. M.; Muñoz Arancibia, S. M.; Troncoso, P.; Villard, E.; Zitrin, A.
- ItemThe ALMA Frontier Fields Survey IV. Lensing-corrected 1.1 mm number counts in Abell 2744, MACS J0416.1-2403 and MACS J1149.5+2223(2018) Munoz Arancibia, A.M.; González López, Jorge; Ibar, E.; Bauer, Franz Erik; Carrasco, M.; Laporte, L.N.; Anguita, T.; Aravena, M.; Infante Lira, Leopoldo; Padilla, Nelson; Barrientos, Andrés F.; Bouwens, R.J.; Demarco, R.; Kneiss, R.; Nagar, N.; Romero-Cañizales, C.; Troncoso, P.; A. Zitrin
- ItemThe ALMA Frontier Fields Survey. IV. Lensing-corrected 1.1 mm number counts in Abell 2744, MACS J0416.1-2403, and MACS J1149.5+2223 (Corrigendum)(2019) Muñoz Arancibia, A. M.; González-López, J.; Ibar, E.; Bauer, F. E.; Carrasco, M.; Laporte, N.; Anguita, T.; Aravena, M.; Barrientos, F.; Bouwens, R. J.; Demarco, R.; Infante, L.; Kneissl, R.; Nagar, N.; Padilla, N.; Romero-Cañizales, C.; Troncoso, P.; Zitrin, A.
- Item[Utilization of an emergency department by elderly people in a university hospital in Santiago de Chile](2011) Marín Larraín, Pedro Paulo; Chavez, P.; Carrasco, M.; Gac Espínola, Homero; Bouzon, C. A.; Manas, L. R.Introducción Se ha reportado un incremento en las consultas de los adultos mayores (AM) a los servicios de urgencia (SU), pero en países en fases precoces de la transición demográfica y epidemiológica no se dispone de datos. Este trabajo describe las características de los mayores de 60 años (AM) que consultan al Servicio de Urgencia del Hospital Clínico Universitario de la Pontificia Universidad Católica de Chile (SU-PUC), en comparación con los menores de 60 años (AJ). Material y métodos Se recogieron retrospectivamente, a partir de los informes estadísticos mensuales del SU-PUC, datos de filiación, motivos de ingreso y rehospitalización. Se excluyeron consultas obstétricas, pediátricas e «ingresos programados». Se compararon las frecuencias mediante la chi cuadrado (significación: p < 0,05). Resultados Se registraron en un año un total de 37.660 consultas al SU-PUC (81% AJ; 19% AM; siendo mayores de 75 años un 8%) No se encontró diferencia estadística en hora de consulta (70% diurna), ni estacionalidad entre los grupos. Se hospitalizó al 19,6% de consultas (n = 7.414), detectándose diferencias en función de la edad (AM: 48,9% vs 12,9% AJ; p < 0,001), especialmente en mayores de 75 años (59%). La primera causa de hospitalización fue cardiopulmonar en AM (22%) y digestiva en AJ (31%). La rehospitalización fue del 10% en los AM y del 6% en AJ (p < 0,001). Conclusión La utilización de los SU por los AM y algunas características de su proceso asistencial (hospitalización) son similares a las encontradas en países en fases más avanzadas de la transición demográfica.