Tootfinder

Time inversion symmetry in the Dirac and Schr\"odinger-Pauli theories
R. Winkler, U. Z\"ulicke
https://arxiv.org/abs/2506.01292 https://

Time inversion symmetry in the Dirac and Schrödinger-Pauli theories
The Schrödinger-Pauli theory is generally believed to give a faithful representation of the nonrelativistic and weakly relativistic limit of the Dirac theory. However, the Schrödinger-Pauli theory is fundamentally incomplete in its account of broken time inversion symmetry, e.g., in magnetically ordered systems. In the Dirac theory of the electron, magnetic order breaks time inversion symmetry even in the nonrelativistic limit, whereas time inversion symmetry is effectively preserved in the S…

iRonCub 3: The Jet-Powered Flying Humanoid Robot
Davide Gorbani, Hosameldin Awadalla Omer Mohamed, Giuseppe L'Erario, Gabriele Nava, Punith Reddy Vanteddu, Shabarish Purushothaman Pillai, Antonello Paolino, Fabio Bergonti, Saverio Taliani, Alessandro Croci, Nicholas James Tremaroli, Silvio Traversaro, Bruno Vittorio Trombetta, Daniele Pucci
https…

iRonCub 3: The Jet-Powered Flying Humanoid Robot
This article presents iRonCub 3, a jet-powered humanoid robot, and its first flight experiments. Unlike traditional aerial vehicles, iRonCub 3 aims to achieve flight using a full-body humanoid form, which poses unique challenges in control, estimation, and system integration. We highlight the robot's current mechanical and software architecture, including its propulsion system, control framework, and experimental infrastructure. The control and estimation framework is first validated in simulat…

I'm broke and summer's coming up, so now is a great time to remind you all, I am STILL available #forhire for #pixelart, #textmode,

Kann ich sehr empfehlen. Nutze sie seit 2 Jahren fast täglich: Playstation VR 2 gibt es vorübergehend für 400 Euro. #ps5 #psvr2 #vr

Playstation VR 2 gibt es vorübergehend für 400 Euro
Ab morgen feiert Playstation die Days of Play 2025 mit Angeboten auf Spiele und Hardware, darunter Playstation VR 2.

Singer-songwriter Nemahsis on the importance of being uncompromising
https://thecreativeindependent.com/people/singer…

Singer-songwriter Nemahsis on the importance of being uncompromising – The Creative Independent
Singer-songwriter Nemahsis discusses breaking through despite hardships, freedom of expression, and the power of building a genuine community online

Evaluating the impact of the L3 cache size of AMD EPYC CPUs on the performance of CFD applications
Marcin Lawenda, {\L}ukasz Szustak, L\'aszl\'o K\"ornyei, Flavio Cesar Cunha Galeazzo, Pawe{\l} Bratek
https://arxiv.org/abs/2505.17934

Evaluating the impact of the L3 cache size of AMD EPYC CPUs on the performance of CFD applications
In this work, the authors focus on assessing the impact of the AMD EPYC processor architecture on the performance of CFD applications. Several generations of architectures were analyzed, such as Rome, Milan, Milan X, Genoa, Genoa X and Bergamo, characterized by a different number of cores (64-128), L3 cache size (256 - 1152 MB) and RAM type (8-channel DDR4 or 12-channel DDR5). The research was conducted based on the OpenFOAM application using two memory-bound models: motorBike and Urban Air Pol…

Elender Fascho-Tech-Milliardär... Hat mir gestern Abend ganz schön die Laune verhagelt, als ich das #Teleskop aufgestellt habe. Innerhalb von ein paar Minuten musste ich die Beobachtung fünf mal abbrechen, weil #Starlink-Satelliten im 1,5-Minuten-Abstand durchs Bild geflogen sind.
Für mich ist das übrigens nur ärgerlich. Für die erdbasierte #Astronomie ist das eine Katastrophe.
#Darmstadt
#AmateurAstronomie
#Astrofotografie
#Sternenhimmel
#Flammensternnebel
#eVscope2