Reseña de Carmen Silva. De la filosofía natural a la psicología de la moral en el Ensayo sobre el entendimiento humano de John Locke. Ciudad de México: Universidad Autónoma de la Ciudad de México–Universidad Autónoma de Aguascalientes, 2021, 231pp.

In the 1960’s Brian Goodwin published a couple of mathematical models showing how feedback inhibition can lead to oscillations and discussed possible implications of this behaviour for the physiology of the cell. He also presented key ideas about the rich dynamics that may result from the coupling between such biochemical oscillators. Goodwin’s work motivated a series of theoretical investigations aiming at identifying minimal mechanisms to generate limit cycle oscillations and deciphering design principles of biological oscillators. The three-variable Goodwin model (adapted (...) by Griffith) can be seen as a core model for a large class of biological systems, ranging from ultradian to circadian clocks. We summarize here main ideas and results brought by Goodwin and review a couple of modeling works directly or indirectly inspired by Goodwin’s findings. (shrink)

We present some aspects of the genesis of a geometric construction, which can be carried out with compass and straightedge, from the original idea to the published version (Fernández González 2016). The Midpoint Path Construction makes it possible to multiply the length of a line segment by a rational number between 0 and 1 by constructing only midpoints and a straight line. In the form of an interview, we explore the context and narrative behind the discovery, with first-hand insights by (...) its author. Finally, we discuss some general aspects of this case study in the context of philosophy of mathematical practice. (shrink)

Lawrence, Carmen Why should we protect our heritage? In the broadest sense our heritage is what we inherit; it's what we value of that inheritance and what we decide to keep and protect for future generations. Heritage is both global enough to encompass our shock at the destruction of the Buddhas of Bamiyan in Afghanistan and as local as our own sepia-tinted family photographs. Everything which our predecessors have bequeathed, both tangible and intangible, may be called heritage - landscapes, (...) structures, objects, traditions, stories and language. (shrink)