Tootfinder

🎣 New study maps the fishmeal factories that supply the world’s fish farms
https://news.mongabay.com/2025/05/new-study-maps-the-fishmeal-factories-that-supply-the-worlds-fish-farms/

New study maps the fishmeal factories that supply the world’s fish farms
Fish farms boomed globally in recent decades — more than half the world’s seafood now comes from aquaculture — but it’s not a boom all environmentalists support. One argument that critics of industrial aquaculture make is that the fishmeal and fish oil used to make the feed for popular carnivorous species like salmon is not sustainably […]

Perfect $1$-factorisations of $K_{11,11}$
Jack Allsop, Ian M. Wanless
https://arxiv.org/abs/2506.02455 https://arxiv.org/pdf/2506.024…

Perfect $1$-factorisations of $K_{11,11}$
A perfect $1$-factorisation of a graph is a decomposition of that graph into $1$-factors such that the union of any two $1$-factors is a Hamiltonian cycle. A Latin square of order $n$ is row-Hamiltonian if for every pair $(r,s)$ of distinct rows, the permutation mapping $r$ to $s$ has a single cycle of length $n$. We report the results of a computer enumeration of the perfect $1$-factorisations of the complete bipartite graph $K_{11,11}$. This also allows us to find all row-Hamiltonian Latin sq…

"Stop that kitty!"
Kitty: *does it faster*

This https://arxiv.org/abs/2307.08780 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLO_…

Discounted-Sum Automata with Multiple Discount Factors
Discounting the influence of future events is a key paradigm in economics and it is widely used in computer-science models, such as games, Markov decision processes (MDPs), reinforcement learning, and automata. While a single game or MDP may allow for several different discount factors, nondeterministic discounted-sum automata (NDAs) were only studied with respect to a single discount factor. It is known that every class of NDAs with an integer as the discount factor has good computational prop…

Loser: U.S. factories
When Democrats in 2022 created and expanded a slew of federal tax breaks for electric vehicles, solar panels, wind turbines, batteries,
they designed them to encourage companies to use components made in the United States.
That spurred a manufacturing boom, including solar-panel glass recyclers in Georgia and electric-vehicle assembly lines in Kentucky.
The new law could derail many of those factories.
The old tax credit for solar power, for…

How the G.O.P. Bill Will Reshape America’s Energy Landscape
Here’s a rundown on the winners and losers in the legislation muscled through Congress.

Quasi-triangular and factorizable dendriform D-bialgebras
You Wang
https://arxiv.org/abs/2507.02249 https://arxiv.org/pdf/2507.02249

Quasi-triangular and factorizable dendriform D-bialgebras
In this paper, we introduce the notions of quasi-triangular and factorizable dendriform D-bialgebras. A factorizable dendriform D-bialgebra leads to a factorization of the underlying dendriform algebra. We show that the dendriform double of a dendriform D-bialgebra naturally enjoys a factorizable dendriform D-bialgebra structure. Moreover, we introduce the notion of relative Rota-Baxter operators of nonzero weights on dendriform algebras and find that every quasi-triangular dendriform D-bialgeb…

🇺🇦 Auf radioeins läuft...
Foo Fighters:
🎵 Everlong
#NowPlaying #FooFighters
https://hurtz432.bandcamp.com/album/foo-fighters-everlong-drewdoesbeats-remix
https://open.spotify.com/track/3QmesrvdbPjwf7i40nht1D

This https://arxiv.org/abs/2505.22813 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

X-Factor: Quality Is a Dataset-Intrinsic Property
In the universal quest to optimize machine-learning classifiers, three factors -- model architecture, dataset size, and class balance -- have been shown to influence test-time performance but do not fully account for it. Previously, evidence was presented for an additional factor that can be referred to as dataset quality, but it was unclear whether this was actually a joint property of the dataset and the model architecture, or an intrinsic property of the dataset itself. If quality is truly d…

Detecting, intercepting, and ejecting adversaries is getting harder as cybercriminals move faster and smarter.
Check out my latest CSO piece on how CISOs need to rethink their digital playbooks in light of these trends.
Thanks to Matt Immler of Okta, Tom Etheridge of CrowdStrike and Pierre Cadieux of Cisco Talos for their insight.

CISOs must rethink defense playbooks as cybercriminals move faster, smarter
Facing faster, stealthier intruders, CISOs are under pressure to modernize their cybersecurity strategies, toolsets, and tactics. From detection to post-mortem, here are key points of renewed emphasis.

In Donald Trump’s White House, the easiest way to avoid being surprised is to remember that anything can happen.
Air Force leaders learned that lesson earlier this year when they arrived for a 💥top-secret briefing 💥with Trump in the Oval Office,
which according to NBC News was scheduled for them to discuss plans for America’s sixth-generation fighter aircraft, dubbed the F-47 in a nod to Trump’s status as the 47th President of the United States.
As the generals were going o…

Military leaders aghast as Meta founder Zuckerberg crashes classified Oval Office meeting on fighter jets: report
Facebook mogul’s sudden appearance is increasingly typical of freewheeling West Wing during Donald Trump’s second term, which president has reportedly nicknamed ‘Grand Central Terminal’