The model used to simulate the Irish COVID-19 response
Detailed thread from Professor Philip Nolan on Twitter, on the scenario modelling used by NPHET to inform the government on likely COVID-19 infection trajectories; several models are used, including a basic SEIR model and an agent-based model, “where social structures and transmission are simulated in detail at the individual level; these show rapid spread in younger people with transmission into older groups, and highlight uncertainty on the role of children and adolescents”, and the role of super-spreader events. tl;dr: “a variant with a transmission advantage [ie., Delta] can do very significant damage if we let it spread in a partially vaccinated population, the scale of the damage depends on the transmission advantage, and it starts slowly and escalates rapidly.”
(tags: modelling data-science statistics epidemiology pandemics covid-19 sars-cov-2 ireland philip-nolan seir)
A potted history of IONA Technologies’ early years
“19 March 1991: Three software developers. One desk. No chairs.” — I was there!
(tags: iona software dublin iona-technologies history 1991 startups ireland)
Underclocking Pi4 to Pi3B level – Raspberry Pi Forums
arm_freq_min and over_voltage settings do the job
(tags: raspberry-pi underclocking cpu performance hacks hardware)
How to Live in a Climate ‘Permanent Emergency’
According to one calculation, the heat wave was five standard deviations above expectations, meaning it was an event that should arrive, in the absence of climate change, once every 5,000 years. That’s once since the age of Ancient Egypt. We are experiencing that five-sigma event this year. In British Columbia, it was as hot as it was in Death Valley, California. They called it Death Valley for a reason.
(tags: grim-meathook-future climate-change climate global-warming heatwaves canada death-valley)