SIAM Conferences, Reinvented

Richard Moore describes the ways in which SIAM conferences are adapting in the COVID-19 world.

New Algorithm Mimics Electrosensing in Fish

Jillian Kunze describes recent work by Lorenzo Baldassari and Andrea Scapin on a model of how weakly electric fish navigate through their environments.

SDG Workshop - Jervis Bay

Sidney Holden, a Phd Student at the University of Sydney reports on the seventh workshop of the Sydney Dynamics Group on Dynamical Systems - Theory and Application #7 held in person on Nov. 23-27, 2020 at the Bay and Bush Cottages in Woolamia New South Wales, Australia.

Frontiers of Invariant Manifold Approximation in Multiple-Timescale Dynamics

Ian Lizarraga from the School of Mathematics and Statistics, The University of Sydney, (ian.lizarraga (at) sydney.edu.au) describes how to use the computational singular perturbation (CSP) method and the parametrization method to compute approximations to invariant manifolds. He also shows how the parametrization method can be adapted to problems with more than two time scales.

A Mathematical Approach to Defensive Positioning in Baseball

Elizabeth Bouzarth, Benjamin Grannan, John Harris, Andrew Hartley, Kevin Hutson, and Ella Morton describe a model using batter-specific refinements to optimize the locations of the fielders in baseball.

The Cauchy-Schwarz Inequality via Springs

Mark Levi describes a physical model of the Cauchy-Schwartz inequality.

Questions of Responsibility: Modelling in the Age of COVID-19

Maurice Chiodo and Dennis Müller discuss ethical questions that arise in math research with a special focus on COVID-19.

Data Assimilation in Medicine

David Albers, Cecilia Diniz Behn, and George Hripcsak write about using ODE models of physiology to make forecasts with sparse, inaccurate data.

Executive Director Jim Crowley Retires After 25 Years of SIAM Leadership

Lina Sorg, the managing editor of SIAM News, reflects on Jim Crowley's twenty-five year tenure as SIAM Executive Director, and shares memories and well-wishes of SIAM Members who have worked with him over the years.