Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 9247-9266 of 20342
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(Universidad de Chile, 2013)El objetivo de este trabajo de tesis es desarrollar una plataforma informática Web Opinion Mining (WOM) para la extracción de información que permita caracterizar la demanda de productos y servicios de una empresa, a través ...
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(Universidad de ChilePrograma Cybertesis, 2008)
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(Universidad de Chile, 2008)El tema del acceso a la información es de especial interés dado el contexto actual de la web 2.0, donde se generan grandes volúmenes de información por parte de muchos usuarios. Es deseable categorizar y priorizar la ...
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(Universidad de Chile, 2021)La recuperación de imágenes basada en dibujos (en inglés Sketch-Based Image Retrieval o SBIR) ha demostrado un creciente interés en la comunidad de visión por computadora, lo que genera un gran impacto en aplicaciones ...
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(Elsevier Ireland Ltd, 2019)Glioblastoma (GBM) is the brain tumor with the worst prognosis composed of a cell subpopulation called Glioblastoma Stem-like Cells (GSCs) responsible for tumor recurrence mediated by cell invasion. GSCs persist in a hypoxic ...
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(Elsevier B.V., 2019)Osteosarcoma is the most common primary bone tumor during childhood and adolescence. Several reports have presented data on serum biomarkers for osteosarcoma, but few reports have analyzed circulating microRNAs (miRNAs). ...
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(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2006-10)A neuro-fuzzy classifier (NFC) of sleep-wake states and stages has been developed for healthy infants of ages 6 mo and onward. The NFC takes five input patterns previously identified on 20-s epochs from polysomnographic ...
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Extracting semantic knowledge from web context for multimedia IR: a taxonomy, survey and challenges (Springer, 2018-06)Since its invention, the Web has evolved into the largest multimedia repository that has ever existed. This evolution is a direct result of the explosion of user-generated content, explained by the wide adoption of social ...
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(IEEE-Inst Electrical Electronics Engineers, 2021)Weakly supervised semantic segmentation (WSSS) methods have received significant attention in recent years, since they can dramatically reduce the annotation costs of fully supervised alternatives. While most previous ...
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Extraction and classification of objects from astronomical images in the presence of labeling bias (Universidad de Chile, 2015)Giga, tera y petabytes de datos astronómicos están empezando a fluir desde la nueva generación de telescopios. Los telescopios de rastreo escanean una amplia zona del cielo con el fin de mapear la galaxia, nuestro universo, ...
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(Elsevier, 2019)The aim of this study is to identify potential antibacterial compounds of endophytic actinomycetes (EA) from marine algae Caulerpa racemosa for inhibit the multi drug resistant (MDR) Gram negative bacteria (GNB) ...
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(SIAM Publications, 2017)We propose an extragradient method with stepsizes bounded away from zero for stochastic variational inequalities requiring only pseudomonotonicity. We provide convergence and complexity analysis, allowing for an unbounded ...
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(American Geophysical Union, 2016)The 10 day explosive phase of the 2008-2009 eruption of Chaiten volcano, Chile, draped adjacent watersheds with a few cm to >1 m of tephra. Subsequent lava-dome collapses generated pyroclastic flows that delivered additional ...
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(2010-02)A caterpillar is a tree in which the removal of all pendant vertices makes it a path. Let d ≥ 3 and n ≥ 6 be given. Let Pd−1 be the path of d − 1 vertices and Sp be the star of p + 1 vertices. Let p = [p1, p2, ..., pd−1] ...
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(UNIVERSIDAD DEL CEMA, 2006-11)For a sample of six countries with dirty/free float regimes over 1999-2002-the United States, Japan, the Czech Republic, Poland, Switzerland, and the United Kingdom, we investigate whether paired currencies exhibit a pattern ...
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(2009)The pioneering works of Murat and Tartar (Topics in the mathematical modeling of composite materials. PNLDE 31. Birkhäuser, Basel, 1997) go a long way in showing, in general, that problems of optimal design may not admit ...
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(AMER INST MATHEMATICAL SCIENCES, 2008-07)We consider Delta u = 0 in Omega, partial derivative u/partial derivative v = lambda f(u) on Gamma(1), u= 0 on Gamma(2) where lambda > 0, f(u) = e(u) or f(u) = (1 + u)(p), Gamma(1), Gamma(2) is a partition of partial ...
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(Elsevier Ltd, 2019)Individual hosts differ extensively in their competence for parasites, but traditional research has discounted this variation, partly because modeling such heterogeneity is difficult. This discounting has diminished as ...
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(Elsevier B.V., 2019)Extreme precipitation events and multi-annual droughts, especially in arid to semi-arid subtropical regions, are among the most critical El Niño Southern Oscillation (ENSO) and global climate change impacts. Here, we assess ...
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(Optical Soc. Amer., 2016-06-15)Extreme events such as rogue waves are often associated with the merging of coherent structures. We report on experimental results in the physics of extreme events emerging in a liquid-crystal light valve subjected to ...
