In 2017, Jorge welcomed me to the headquarters of Costa Rica’s underground water agency. His supervisor had asked him to show me “the model” at work. After many years of fieldwork on water issues, I had already been introduced to many models: the mathematical model to calculate extraction rates, two different pieces of software that model aquifer flow, the regulatory model Costa Rica’s agency follows, and sponges as a preferred … [more…]
Adjusting the water flow rate in a river can prevent invasive species from moving upstream and expanding their range. An applied mathematician at UT has developed a partial differential equation model to find the desired flow rate to reduce invasive populations.
The model is detailed in a new paper by Suzanne Lenhart, Chancellor’s Professor and James R. Cox Professor of Mathematics, published in Mathematics.
The demise of the Maya civilization
Something really drastic must have happened to end the Classic Maya Period in the 9th Century. Within a short period of time, this advanced civilisation in Central America went from flourishing to collapsing — the population dwindling rapidly and monumental stone structures, like the ones built at Yucatán, were no longer being constructed. The reason for this demise remains the subject of debate even … [more…]