https://maistrelis.com/en/lessons/Personal blog of Kostas Maistrelis.enKostas MaistrelisKostas MaistrelisWed, 01 Jul 2026 20:28:04 +0300https://maistrelis.com/en/lessons/logistic-growth/Wed, 01 Jul 2026 20:28:04 +0300Kostas Maistrelishttps://maistrelis.com/en/lessons/logistic-growth/From the exponential to the logistic equation: how the carrying capacity K of the environment turns unchecked growth into a sigmoidal curve. A standalone R Markdown lesson with qualitative analysis, phase portrait, numerical solution (deSolve) and parameter estimation.https://maistrelis.com/en/lessons/exponential-growth/Wed, 01 Jul 2026 18:00:00 +0300Kostas Maistrelishttps://maistrelis.com/en/lessons/exponential-growth/How, starting from a simple observation — a 10% daily increase in the water lilies of a lake — we arrive at the exponential growth formula by way of a differential equation. A standalone R Markdown lesson with text, R code, plots and mathematics.https://maistrelis.com/en/lessons/eisagogi-paragogos/Tue, 30 Jun 2026 18:07:48 +0300Kostas Maistrelishttps://maistrelis.com/en/lessons/eisagogi-paragogos/A short introduction/reminder to the concept of the derivative — the «rate of change». Each lesson opens as a standalone page (R Markdown).