Noticias en español
Summary: In this talk, we will briefly introduce the nonlinear elasticity equations to understand the language of large deformations modeling. After this, we will focus on the much less studied “Inverse Elasticity Problem”, whose solution is sometimes referred to as the reference configuration, or stress-free configuration. This problem can be stated as follows: Given a set of known external forces and a *deformed* configuration, find an initial (or reference) configuration such that, when the given forces are applied to it, we recover the deformed configuration. As we will...
Read MoreOptimal methods for combining discrete p-values.
Abstract: Combining the significance of multiple experiments regarding the same scientific hypothesis is a crucial method for global hypothesis testing, with applications in meta-analysis, signal detection, and other data-integrative studies. Such procedures consider a group of p-values, $P_1, \cdots, P_n$, to form a summary statistic to determine the overall evidence against a global null hypothesis. Mathematical studies often assume that the underlying statistics are continuous and independent, due to their homogeneous and straightforward mathematical structure. In reality, however, data...
Read More“Estrategia para el proceso de actualización planimétrica de la cartografía nacional mediante técnicas de deep learning y el uso óptimo de imágenes satelitales”.
Read MoreDesarrollo de un colector de concentración solar Fresnel para calor de procesos en Ecuador.
Abstract:El grupo de investigación SCINERGY de la Escuela Politécnica Nacional ha emprendido en la investigación y desarrollo de un colector solar de concentración tipo Fresnel para producción de calor de procesos (< 180ºC), que pueda ser construido con las capacidades tecnológicas locales. Este trabajo muestra los avances y los retos alrededor de este objetivo. El desarrollo local de esta tecnología apoyaría en la diversificación de la matriz energética introduciendo fuentes renovables.
Read MoreMinimum expansion factors of orientation-reversing pseudo-Anosov maps.
RESUMEN: Pseudo-Anosov maps are prevalent among mapping classes of surfaces. Given a pA map, the expansion factor measures the complexity of its dynamics. It is a classical result that the set of expansion factors (viewed as a subset of the set of real numbers) among all pA maps defined on a fixed surface has a minimum element. This minimum expansion factor can be thought of as the systole of the moduli space for the Teichmüller metric. Its value is not known for the genus larger than three.
Read MoreGeneralized Quasi-Geostrophy for Moist Spatially Anisotropic Atmospheric Flows with Phase Changes.
Summary: Traditionally, the simulation of precipitating convection use a non-Boussinesq dynamical core such as the anelastic equations, and would incorporate water substance in all of its phases: vapour (cloud and rain), liquid and ice. Furthermore, the liquid water phase would be separated into cloud water (small droplets suspended in air) and rain water (larger droplets that fall). Depending on environmental conditions, the moist convection may organize itself on multiple length and time scales. One of the minimal representations of water substance and dynamics that still reproduces the...
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