Noticias en español
Seminars appear in decreasing order in relation to date. To find an activity of your interest just go down on the list. Normally seminars are given in English. If not, they will be marked as Spanish Only.
Ecuaciones de Burgers acopladas.
Resumen: Las ecuaciones de Burgers acopladas fueron introducidas en los años 90 en el estudio de interfaces aleatorias en física de materiales. Posteriormente, fueron utilizadas, entre otros contextos, como modelos de sedimentación y en magnetohidrodinámica. Matemáticamente, fueron estudiadas por Funaki y coautores desde el punto de vista de las distribuciones paracontroladas y por Gubinelli y Perkowski desde el punto de vista de las soluciones de energía. En este trabajo, introducimos una discretización de estas ecuaciones que se puede...
Evolución espacio temporal del Covid 19 en España.
Resumen: El objetivo es presentar los diferentes trabajos de difusión de Covid en España desde el comienzo de la pandemia hasta la actualidad. Panel de Situación y evolución de la pandemia de COVID-19 en España con la evolución de la pandemia(Rt y curva epidemiológica) la distribución geográfica de la enfermedad (Incidencias acumuladas a 7 y 14 dias). https://cnecovid.isciii.es/covid19/ Panel de detección de cluster espacio-temporales a tiempo real Presentación del proyecto Factores de difusión COVID-19 o Principales resultados de la...
Orienting (hyper)graphs under explorable stochastic uncertainty.
Abstract: Given a hypergraph with uncertain node weights following known probability distributions, we study the problem of querying as few nodes as possible until the identity of a node with minimum weight can be determined for each hyperedge. Querying a node has a cost and reveals the precise weight of the node, drawn from the given probability distribution. Using competitive analysis, we compare the expected query cost of an algorithm with the expected cost of an optimal query set for the given instance. For the general case, we give a...
Investigating students’ coordinate systems
Abstract Starting around fifth grade, students are expected to represent and reason about various mathematical concepts (e.g., geometrical shapes, equations, and functions, etc.) using the Cartesian plane. However, the Cartesian plane is often taken for granted and students are assumed to develop proficiency in using the Cartesian plane in relatively unproblematic ways. My research has focused on understanding how students construct and make sense of coordinate systems, the foundational structure underlying graphs. I will (a) present a...
Some ideas to obtain energy in Chile.
Abstract: In this talk we will present advances of a program that studies the modeling, analysis and control of models that describe the dynamics of wave energy converters (WEC) devices. In particular we will study two nonlinear models of an oscillating water column, where the one-dimensional shallow water equations in the presence of this device are essentially reformulated as two transmission problems: the first one is associated with a step in front of the device and the second one is related to the interaction between waves and a fixed...
