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@bilbo_le_hobbit@mamot.fr
2026-08-17 13:13:34

Dis Bilbo, c'était quoi ton moment préféré ?
Y en a un paquet, évidemment, mais il y a ce moment après le troisième contact quand la pression retombe, que les gens autour sont béats et joyeux. Et ce petit rituel du selfie solaire instauré il y a 20 ans dans le désert égyptien. Un moment de partage avec tous les voisins qui sont repartis avec un croissant de soleil en projection sur leur t-shirt ou dans la main. C'était chouette, vraiment...

Homme heureux et béat en chemisette et t-shirt, ce dernier étant une relique d'une précédente éclipse en Zambie en 2001. Sur le t-shirt, un croissant de soleil orangé.et l'image projetée vient d'une petite lunette astro sans filtre solaire dirigée vers le t-shirt. Attention ! Ne jamais mettre l'œil à l'oculaire d'un instrument pointé vers le soleil s'il n'est pas muni d'un filtre adapté !
 cascade réalisée par un astronome amateur, à ne pas réaliser chez soi sans connaissance préalable.
@Mediagazer@mstdn.social
2026-09-17 22:40:49

Film and TV advocates and execs visited Washington, DC, on Wednesday to lobby for a federal production tax credit, ahead of an election recess for the US House (Katie Kilkenny/The Hollywood Reporter)
hollywoodreporter.com/business

Nick Blair, a 40-year-old former football agent, and son of ex-Prime Minister Tony Blair,
is seeking funding for a military technology startup called “Pyra”
to the tune of 200 million dollars.
It’s not clear what, exactly, Pyra needs all that money to do:
its website only says “Deploying Summer 2026…Stand By.”
Blair is at the moment the only active officer of the company, according to UK government filings.
In an article published this week, an unnamed sour…

"At a moment when the living world has been deeply imperiled, I wanted to make my biggest, boldest attempt at showing why it matters—why it all matters, and especially the parts that lie outside our normal experiences."
--Ed Yong, email talking about an upcoming book about ALL LIFE: "Life Beyond Measure"
#GreatWriting

@arXiv_mathST_bot@mastoxiv.page
2026-08-14 07:59:32

Sharp proper estimation of fixed-component Gaussian location mixtures in polynomial time
Hengzhi He, Guang Cheng
arxiv.org/abs/2608.12701 arxiv.org/pdf/2608.12701 arxiv.org/html/2608.12701
arXiv:2608.12701v1 Announce Type: new
Abstract: We consider a mixture of at most $k$ unit-covariance Gaussians in $\mathbb{R}^d$ whose means belong to a fixed-radius ball, with no separation or minimum-weight condition. Doss, Wu, Yang and Zhou (2023) proved that the minimax Hellinger risk is of order $\sqrt{d/n}\wedge 1$ and constructed a proper polynomial-time estimator with the slower general bound $(d/n)^{1/4}$; obtaining the sharp rate in polynomial time for fixed $k\geq 3$ was left open. We resolve this question. The key device is a moment-fiber range finder. A second-moment subspace controls the energy missed by projection. We then estimate finitely many one-free-index Hermite contractions. These vector-valued contractions recover every tensor component containing exactly one missed direction at the sharp $\sqrt{d/n}$ scale. Every remaining term contains at least two missed factors and is therefore controlled by the residual second-moment energy. The resulting subspace has dimension depending only on $k$. Exhaustive moment fitting in this constant-dimensional space produces a proper mixture and, together with the dimension-free moment characterization of Gaussian mixtures, achieves the optimal Hellinger rate in polynomial arithmetic time for every fixed $k$.
toXiv_bot_toot

@Techmeme@techhub.social
2026-08-14 01:02:00

Current and former OpenAI employees say pressure to quickly ship products left less time for safety, contributing to incidents like the rogue agent hack (Maxwell Zeff/Wired)
wired.com/story/openai-safety-

@weddingweiser@berlin.social
2026-08-17 05:30:10

Kiez-Moment: Garten Eden im Wedding weddingweiser.de/kiez-moment-p

@Simone21@mastodon.social
2026-08-09 10:21:03

🇨🇭 🇨🇭 🇨🇭 🇨🇭 🇨🇭
Und noch etwas:
Bitte unterzeichnen.
Im Moment brauchen wir alles andere, als noch ein riskantes Unternehmen mit unabsehbaren Folgen!
Danke.
🇨🇭 🇨🇭 🇨🇭 🇨🇭 🇨🇭
lebensmittelschutz.ch/protestb

Central bankers in economies including the US, Japan and the UK will face a moment of truth this week,
as surging inflation raises the prospect of higher interest rates.
Policymakers in all three countries will set rates in the next seven days
against the backdrop of turbulent global bond markets.
In particular, investors will be watching closely to see if Kevin Warsh, the new chair of the US Federal Reserve,
can face down Donald Trump’s demands for rate cuts an…

Three years ago, the Defense Department led an ambitious international effort to better protect civilians during combat,
a movement built on the bloody lessons of Afghanistan and Iraq.
The Pentagon created a network with European partners,
driving the creation of shared standards.
Civilian harm experts described the moment as a “unique opportunity” for American leadership by example.
Today, those efforts continue
— without the United States,
after De…