Tootfinder

https://www.theguardian.com/society/2025/jun/11/public-health-bodies-urged-launch-period-tracking-apps-protect-data
Public health bodies urged to launch period tracking apps to protect data

Heute beginnt das Race Across America, eines der härtesten Radrennen der Welt.
Zum Tracking geht es hier entlang: #RAAM

Anhaltende #Trockenheit erschwert vielen #Weißstörchen in Bayern die #Nahrungssuche.
Um das

Zu trocken: Störche werfen Nachwuchs aus dem Nest
Wegen der anhaltenden Trockenheit in diesem Frühjahr finden einige Weißstörche nicht genug Futter für ihren Nachwuchs. Die Konsequenz: Sie reduzieren die Zahl der Küken und werfen welche aus dem Horst – um das Überleben der anderen zu sichern.

"Localhost tracking" explained. It could cost Meta 32 billion. (Jorge García Herrero/Zero Party Data)
https://www.zeropartydata.es/p/localhost-tracking-explained-it-could
http://www.memeorandum.com/250611/p10#a250611p10

Silicate clouds and a circumplanetary disk in the YSES-1 #exoplanet system: https://www.nature.com/articles/s41586-025-09174-w.epdf?sharing_token=RRmxpt1H4UGfhsYggN3LidRgN0jAjWel9jnR3ZoTv0MsHgms7qJzLfZGfJR11eb-vvEQdUtgFRiob9i301fI7DuGo7WWpkZLKlBCdxpBK5AtQvipTF21oU1Tw3IfH_O299ja-Dy3Oo4o1Q5VRXUCWJTPdjQkwk4zJQSkuuzQX2KL605kQMDx_pt1BkUCYmaMuZtqUaPN5_fJM4TPjD9jmnj-omY7Blc5Ec9TOMsfMKyPlLhSsEPzgSnJUW1HLYkK77XpgEtFG9-NFAgx02m_lsc8Ieb6pLEOQVNzzni3RmECgd88noZtE_Xg2P3BIsbi&tracking_referrer=www.theguardian.com -> Astronomers left puzzled by high-altitude clouds forming on young planet: https://www.theguardian.com/science/2025/jun/10/astronomers-space-telescope-clouds-planet - experts say thick slabs of cloud in YSES-1 system could consist of mineral dust and iron, which would rain down.

Falls es nochmal einen US Präsidenten gibt, dürfte es jeder Bewerber neben Newsom schwer haben. ✊
https://mastodon.social/@TwraSun/114663296452275954

Trigonometric Ratios Can Prove the Pythagorean Theorem
Shoya Kise, Takesa Uehara, Takashi Shinzato
https://arxiv.org/abs/2506.06304 https://

Trigonometric Ratios Can Prove the Pythagorean Theorem
Recent interest in noncircular trigonometric proofs has underscored the need for alternative methodologies. Jackson and Johnson's 2024 study addresses a longstanding gap in the foundations of trigonometric proofs. Inspired by the work of Jackson and Johnson [JJ24], we present three noncircular proofs of the Pythagorean theorem based on trigonometric identities. First, we establish the Pythagorean theorem via an isosceles triangle construction and the tangent double-angle formula. Second, we pre…

A torsion theoretic interpretation for sheaves of modules and Grothendieck topologies on directed categories
Zhenxing Di, Liping Li, Li Liang
https://arxiv.org/abs/2506.08685

A torsion theoretic interpretation for sheaves of modules and Grothendieck topologies on directed categories
We prove that every Grothendieck topology induces a hereditary torsion pair in the category of presheaves of modules on a ringed site, and obtain a homological characterization of sheaves of modules: a presheaf of modules is a sheaf of modules if and only if it is saturated with respect to torsion presheaves, or equivalently, it is right perpendicular to torsion presheaves in the sense of Geigle and Lenzing. We also study Grothendieck topologies on directed categories $\mathscr{C}$, and show th…

Torsion Balance Experiments Enable Direct Detection of Sub-eV Dark Matter
Shigeki Matsumoto, Jie Sheng, Chuan-Yang Xing, Lin Zhu
https://arxiv.org/abs/2506.07763

Torsion Balance Experiments Enable Direct Detection of Sub-eV Dark Matter
Light dark matter with sub-eV masses has a high number density in our galaxy, and its scattering cross section with macroscopic objects can be significantly enhanced by coherence effects. Repeated scattering with a target object can induce a measurable acceleration. Torsion balance experiments with geometric asymmetry are, in principle, capable of detecting such signals. Our analysis shows that existing torsion balances designed to test the Equivalence Principle already place the most stringent…

Continuous-Time Output Feedback Adaptive Control for Stabilization and Tracking with Experimental Results
Mohammad Mirtaba, Ankit Goel
https://arxiv.org/abs/2506.08042

Continuous-Time Output Feedback Adaptive Control for Stabilization and Tracking with Experimental Results
This paper presents a continuous-time output feedback adaptive control technique for stabilization and tracking control problems. The adaptive controller is motivated by the classical discrete-time retrospective cost adaptive control algorithm. The particle swarm optimization framework automates the adaptive algorithm's hyper-parameter tuning. The proposed controller is numerically validated in the tracking problems of a double integrator and a bicopter system and is experimentally validated in…