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@newsie@darktundra.xyz
2026-01-28 15:56:47

The Doomsday Clock Ticks Closer to Midnight. Does Anyone Care? 404media.co/the-doomsday-clock

@markhburton@mstdn.social
2026-01-26 13:33:56

Former Shadow Chancellor John McDonnell tweeted: "Message to Keir: Do not underestimate the depth of anger people will feel about this disgusting decision. If you think it strengthens you I tell you it will simply hasten your demise. You could have shown magnanimous leadership but instead it’s cowardice."
By-election machinations weaken Keir Starmer and could ultimately push Andy Burnham closer to No 10 - Manchester Evening News

@playinprogress@assemblag.es
2026-03-29 09:08:04

remember dahlias? I sure do. maybe the bumble bees do as well.
#photography #fall #nofilter #bumblebee

closeup of a simple yellow dahlia flower with a bumble bee sitting right in the middle, in front of various green foliage
a different view of the same flower and bumble bee, now seen in profile and zoomed in even closer, with another flower of the same kind and some grey asphalt in the background
a 3/4 view of the same dahlia and bumble bee, showing off the bee's delicate wings
another frontal view of the same dahlia and bumble bee, this time a bit more zoomed in than the first
@arXiv_nlinAO_bot@mastoxiv.page
2026-03-23 07:51:38

Operational tracking loss in nonautonomous second-order oscillator networks
Veronica Sanz
arxiv.org/abs/2603.19420 arxiv.org/pdf/2603.19420 arxiv.org/html/2603.19420
arXiv:2603.19420v1 Announce Type: new
Abstract: We study when a network of coupled oscillators with inertia ceases to follow a time-dependent driving protocol coherently, using a simplified graph-based model motivated by inverter-dominated energy systems. We show that this loss of tracking is diagnosed most clearly in the frequency dynamics, rather than in phase-based observables. Concretely, a tracking ratio built from the frequency-disagreement observable $E_\omega(t)$ and normalized by the instantaneous second-order modal decay rate yields a robust protocol-dependent freeze-out time whose relative dispersion decreases with system size. Graph topology matters substantially: the resulting freeze-out time is only partly captured by the algebraic connectivity $\lambda_2$, while additional structural descriptors, particularly Fiedler-mode localization and low-spectrum structure, improve the explanation of graph-to-graph variation. By contrast, phase-sector observables develop strong non-monotonic and underdamped structure, so simple diagonal low-mode relaxation closures are not quantitatively reliable in the same regime. These results identify the frequency sector as the natural operational sector for nonautonomous tracking loss in second-order oscillator networks and clarify both the usefulness and the limits of reduced spectral descriptions in this setting.
toXiv_bot_toot