Tootfinder

Autot alkavat jarruttaa itse pyöräilijöiden ja jalankulkijoiden edessä – turvaominaisuus tulee pakolliseksi ensi vuonna #ympäristö

Autot alkavat jarruttaa itse pyöräilijöiden ja jalankulkijoiden edessä – turvaominaisuus tulee pakolliseksi ensi vuonna
EU on asteittain tiukentanut uusien autojen turvavaatimuksia. Seuraavaksi pakollisiksi tulevat laajemmat hätäjarrutustoiminnot ja tarkempi kuljettajan tarkkaavaisuuden valvonta.

Very satisfying one today:
#CellTower 1128
➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️➡️
https://www.andrewt.net/puzzles/cell-tower/?p=1128

Cell Tower
Find the hidden words in the stack of random letters

teaching a transformer net to approximate ray-tracing
input is a sequence of triangle data (limited to 4k triangles), and a sequence of 8x8 radiance pixels representing the camera (limited to 512x512 resolution)
output is a sequence of 8x8 pixels of the rendered scene. training was ~10 days. generation is ~100ms (NVIDIA A100)
the results are pretty good. scaling will be a challenge (since transformers are quadratic in sequence length)

🧲 MRI method maps blood flows in reverse for deeper insight into brain physiology
#medicine

MRI method maps blood flows in reverse for deeper insight into brain physiology
The venous system maintains the health of our brains by removing deoxygenated blood and other waste products, but its complexity and variability have made scientific study difficult. Now, a UC Berkeley-led team of researchers has developed an innovative MRI technique that may expand our understanding of this critical system.

https://www.lemonde.fr/pixels/article/2025/07/06/comment-les-reponses-generees-par-ia-menacent-les-fondamentaux-du-web_6619183_4408996.html

Comment les réponses générées par IA menacent les fondamentaux du Web
Les systèmes d’intelligence artificielle capables, comme ChatGPT, de répondre aux questions des internautes, aspirent à ringardiser les moteurs de recherche traditionnels et à rendre facultative la consultation de sites Internet. Dans ces conditions, que va-t-il rester du World Wide Web ?

This https://arxiv.org/abs/2308.16070 has been replaced.
initial toot: https://mastoxiv.page/@a…

Giant piezoelectricity driven by Thouless pump in conjugated polymers
Piezoelectricity of organic polymers has attracted increasing interest because of several advantages they exhibit over traditional inorganic ceramics. While most organic piezoelectrics rely on the presence of intrinsic local dipoles, a highly nonlocal electronic polarization can be foreseen in conjugated polymers, characterised by delocalized and highly responsive $π$-electrons. These 1D systems represent a physical realization of a Thouless pump, a mechanism of adiabatic charge transport of t…

A thing that puzzles me about biking, and how I bike, and how some apparently "Effective Cyclists" bike, is whether the belief in "the system" affects reactions to problems, or if there might actually might be something cognitive at work. A long-ago-friend of mine, when asked how to use a canoe, said, "don't fall out, don't hit rocks". This was flip and glib, but not all wrong, basically, avoid the two obvious mistakes, and keep doing that. When I sta…

(Tilaajille) Paikalliset huomasivat erikoisen ilmiön Pöytyällä – Aurajoki on kadonnut #Pöytyä

Paikalliset huomasivat erikoisen ilmiön Pöytyällä – Aurajoki on kadonnut
Rehevä vihreys on peittänyt joen yläjuoksulla. Tänä ja ensi vuonna on tarkoitus rakentaa tulvatasanteita nappaamaan pelloilta jokeen valuvia ravinteita.