Repositorio Académico de la Universidad de Chile: Recent submissions

Now showing items 25881-25900 of 98435

    • Plan de gestión de control de riesgos críticos y productividad 
      Vásquez Orellana, Guillermo Jesús (Universidad de Chile, 2020)
      La Vicepresidencia de Proyectos de Codelco, actualmente se encuentra ejecutando un total de 9 proyectos en sus fases de construcción y 10 proyectos en las fases de Prefactibilidad y Factibilidad. En este contexto, Codelco ...
    • Segmentación del mercado laboral juvenil en Chile: tendencias y modalidades de la década 2010-2019 
      Becker Bozo, Ignacio (Universidad de Chile, 2021)
      La presente investigación tiene por objetivo describir y caracterizar las tendencias y modalidades del mercado laboral juvenil en Chile para la década 2010-2019, mediante el enfoque de la segmentación de los mercados ...
    • Alineamiento de marcos de acción colectiva en el Movimiento Estudiantil Chileno (2016-2017) 
      Saldaña Zúñiga, Víctor Alexis (Universidad de Chile, 2018-12)
      La presente tesis de magister se enmarca entre las investigaciones que en los últimos años han estudiado el caso desarrollo del Movimiento Estudiantil Chileno y sus consecuencias en el escenario político nacional a partir ...
    • Educación popular como práctica transformadora: ¿para qué, por qué y cómo se podría hacer educación popular? ... 
      Fernández Valenzuela, Marcela Edith (Universidad de Chile, 2017)
      A través de la presente investigación, se analizaron las dimensiones de la experiencia desplegada en torno a las prácticas de educación popular en la organización Escuela Púbica Comunitaria de Santiago, ubicada en el barrio ...
    • Índigo : un espacio educacional para el desarrollo creativo 
      Marchan Maldonado, Ninibeth Silene (Universidad de Chile, 2021)
      Durante las últimas décadas la educación para la primera infancia ha tomado un rol protagonista en las políticas de desarrollo de los países occidentales, principalmente por su condición como igualador social, fundamental ...
    • Condition-Based maintenance with reinforcement learning for dry gas pipeline subject to internal corrosión 
      Mahmoodzadeh, Zahra; Wu, Keo-Yuan; López Droguett, Enrique; Mosleh, Ali (MDPI, 2020)
      Gas pipeline systems are one of the largest energy infrastructures in the world and are known to be very efficient and reliable. However, this does not mean they are prone to no risk. Corrosion is a significant problem in ...
    • Clinical and gated SPECT MPI parameters associated with super-response to cardiac resynchronization therapy 
      Mesquita, Claudio T.; Peix, Amalia; De Amorim Fernándes, Fernando; Giubbini, Raffaele; Karthikeyan, Ganesan; Massardo Vega, Teresa; Patel, Chetan; Pabón, Luz M.; Jiménez Heffernan, Amelia; Alexanderson, Erick; Butt, Sadaf; Kumar, Alka; Marín, Víctor; Morozova, Olga; Páez, Diana; García, Ernets V. (Springer, 2020)
      Purpose We sought to evaluate the behavior of cardiac mechanical synchrony as measured by phase SD (PSD) derived from gated MPI SPECT (gSPECT) in patients with super-response after CRT and to evaluate the clinical and ...
    • Paisaje de infancia : el juego como expresión de corporalidad en el espacio público 
      Vicencio Salas, Nicole (Universidad de Chile, 2020)
      Esta investigación pretende aportar nuevos conocimientos sobre el juego y su rol en la infancia, entendiendo esto como un enfoque explicativo, donde estudiaremos espacios de ocio, pensados, diseñados y construidos ...
    • La prueba ilícita en el derecho de familia 
      Delgado Valenzuela, Constanza Andrea (Universidad de Chile, 2021-02)
      En la presente memoria se investigará en el marco del proceso de familia la institución de la prueba ilícita, y su consecuente regla de exclusión contemplada en la Ley Nº 19.968 que Crea los Tribunales de Familia. Para ...
    • The search for disks or planetary objects around directly imaged companions: A candidate around DH Tau B. 
      Lazzoni, C.; Zurlo, A.; Desidera, S.; Mesa, D.; Fontanive, C.; Bonavita, M.; Ertel, S.; Rice, K.; Vigan, A.; Boccaletti, A.; Bonnefoy, M.; Chauvin, Gaël; Delorme, P.; Gratton, R.; Houllé, M.; Maire, A.L.; Meyer, M.; Rickman, E.; Spalding, E. A.; Asensio Torres, R.; Langlois, M.; Müller, A.; Baudino, J L.; Beuzit, J. L.; Biller, B.; Brandner, W.; Buenzli, E.; Cantalloube, F.; Cheetham, A.; Cudel, M.; Feldt, M.; Galicher, R.; Janson, M.; Hagelberg, J.; Henning, T.; Kasper, M.; Keppler, M.; Lagrange, A. M; Lannier, J.; LeCoroller, H.; Mouillet, D.; Peretti, S.; Perrot, C.; Salter, G.; Samland, M.; Schmidt, T.; Sissa, E.; Wildi, F. (EDP Science, 2020)
      Context. In recent decades, thousands of substellar companions have been discovered with both indirect and direct methods of detection. While the majority of the sample is populated by objects discovered using radial ...
    • The neural bases of Tinnitus: Lessons from deafness and cochlear implants 
      Knipper, Marlies; van Dijk, Pim; Schulze, Holger; Mazurek, Birgit; Krauss, Patrick; Scheper, Verena; Warnecke, Athanasia; Schlee, Winfried; Schwabe, Kerstin; Singer, Wibke; Braun, Christoph; Délano Reyes, Paul; Fallgatter, Andreas J.; Ehlis, Ann-Christine; Searchfield, Grant D.; Munk, Matthias H.J.; Baguley, David M.; Rüttiger, Lukas (Society for Neuroscience, 2020)
      Subjective tinnitus is the conscious perception of sound in the absence of any acoustic source. The literature suggests various tinnitus mechanisms, most of which invoke changes in spontaneous firing rates of central ...
    • SVR-FFS: A novel forward feature selection approach for high-frequency time series forecasting using support ... 
      Valente, José Manuel; Maldonado Alarcón, Sebastián (Elsevier, 2020)
      n this paper, we propose a novel support vector regression (SVR) approach for time series analysis. An efficient forward feature selection strategy has been designed for dealing with high-frequency time series with multiple ...
    • Studying star-forming processes at core and clump scales: the case of the young stellar object G29.862-0.0044 
      Areal, M. B.; Paron, S.; Fariña, C.; Ortega, M. E.; Celis Peña, M.; Rubio López, Mónica (EDP Science, 2020)
      Aims. To advance our knowledge of star formation, in addition to statistical studies and large surveys of young stellar objects (YSOs), it is important to carry out detailed studies towards particular objects. Given that ...
    • Stability and robustness of asymptotic autocatalytic systems 
      Yun Cárcamo, Sohyoun; Carrasco Machado, Sebastián; Rogan Castillo, José; Correa Burrows, Paulina; Valdivia Hepp, Juan Alejandro (Nature, 2020)
      Here, we address the consequences of the extension in the space of a simple model of a system that is closed to efficient causation: the (M,R)-system model. To do so, we use a diffusion term to describe the collective ...
    • Observations of edge-on protoplanetary disks with ALMA I. Results from continuum data 
      Villenave, M.; Menard, F.; Dent, W. R. F.; Duchene, G.; Stapelfeldt, K. R.; Benisty, M.; Boehler, Y.; Van der Plas, G.; Pinte, C.; Telkamp, Z.; Wolff, S.; Flores, C.; Lesur, G.; Louvet, F.; Riols, A.; Dougados, C.; Williams, H.; Padgett, D. (EDP, 2020)
      Aims. We aim to study vertical settling and radial drift of dust in protoplanetary disks from a different perspective: an edge-on view. An estimation of the amplitude of settling and drift is highly relevant to understanding ...
    • On the recognition of chloride, bromide and nitrate anions by anthracene-squaramide conjugated compounds: ... 
      Pereira Orenha, Renato; Da Silva, Vanessa Borges; Caramori, Giovanni Finoto; De Souza Schneider, Felipe; Piotrowski, Mauricio Jeomar; Contreras-García, Julia; Cárdenas, Carlos; Briese Goncalves, Marina; Mendizábal Emaldia, Fernando; Parreira, Renato Luis Tame (Royal Society of Chemistry, 2020)
      Anion recognition is widely used in several biological fields. Squaramide derived compounds appear as potential structures to recognize anions. Here, the bond mechanisms between the chloride (Cl-), bromide (Br-) and nitrate ...
    • Optimized DNA extraction and purification method for characterization of bacterial and fungal communities ... 
      Pérez Brocal, Vicente; Magne, Fabien; Ruiz Ruiz, Susana; Ponce, Carolina A.; Bustamante, Rebeca; San Martín, Viviana; Gutiérrez, Mireya; Gatti, Gianna; Vargas Munita, Sergio; Moya, Andrés (Nature, 2020)
      Human lungs harbor a scarce microbial community, requiring to develop methods to enhance the recovery of nucleic acids from bacteria and fungi, leading to a more efficient analysis of the lung tissue microbiota. Here we ...
    • Pathophysiology of Ischemic Stroke: Role of Oxidative Stress 
      Orellana Urzúa, Sofía; Rojas, Ignacio; Líbano, Lucas; Rodrigo Salinas, Ramón (Bentham Science, U Arab Emirates, 2020)
      Stroke is the second leading cause of mortality and the major cause of adult physical disability worldwide. The currently available treatment to recanalize the blood flow in acute ischemic stroke is intravenous administration ...
    • Periodic Revisions of the International Choices Criteria: Process and Results 
      Van den Assum, Sylvie; Schilpzand, Rutger; Lissner, Lauren; Don, Rokiah; Nair, Krishnapillai Madhavan; Nnam, Ngozi; Uauy Dagach-Imbarack, Ricardo; Yang, Yuexin; Pekcan, Ayla Gulden; Roodenburg, Annet J. C. (MDPI, 2020)
      Unhealthy diets contribute to an increased risk of non-communicable diseases, which are the leading causes of deaths worldwide. Nutrition policies such as front-of-pack labeling have been developed and implemented globally ...
    • Pharmacogenetics-based preliminary model improves prediction of infection in patients receiving cytotoxic ... 
      Martínez, Matías; Alveal, Enzo; Soto, Tomás; Bustamante, Eva; Flores, Ivonne; Araya Benavides, Claudia Andrea; Ávila Oesterle, Fernanda; Jara, Scarlette; Morales, Ricardo; Varela Figueroa, Nelson; Quiñones Sepúlveda, Luis (Wiley, 2020)