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Wir erstellen sprechende QR-Codes QR-Codes sind schon lange kein Aufreger mehr, aber dass sie sprechen können ist schon noch etwas Besonderes. Sehr datenschutzfreundlich und einfach geht das mit dem Tool QRStorage von Kits.Blog , das vom Niedersächsischen Landesinstitut für schulische Qualitätsentwicklung (NLQ) bereitgestellt wird. Aufgabe Suche in der Bibel 

Superradiant Axionic Black-Hole Clouds as Seeds for Graviton Squeezing
Panagiotis Dorlis, Nick E. Mavromatos, Sarben Sarkar, Sotirios-Neilos Vlachos
https://arxiv.org/abs/2507.01689

Superradiant Axionic Black-Hole Clouds as Seeds for Graviton Squeezing
It is shown that both, standard general relativity (GR) and Chern-Simons (CS) gravity, the latter containing chiral gravitational anomaly terms, seed the production of pairs of entangled gravitons in a multi-mode squeezed state. This involves the interaction of gravitons with the axionic cloud surrounding a superradiant Kerr (rotating) black hole background. The order of magnitude of the squeezing effect, specifically the number of graviton excitations in the squeezed vacuum, is estimated in th…

Fantastic Flips and Where to Find Them: A General Framework for Parameterized Local Search on Partitioning Problem
Niels Gr\"uttemeier, Nils Morawietz, Frank Sommer
https://arxiv.org/abs/2506.24001

Fantastic Flips and Where to Find Them: A General Framework for Parameterized Local Search on Partitioning Problem
Parameterized local search combines classic local search heuristics with the paradigm of parameterized algorithmics. While most local search algorithms aim to improve given solutions by performing one single operation on a given solution, the parameterized approach aims to improve a solution by performing $k$ simultaneous operations. Herein, $k$ is a parameter called search radius for which the value can be chosen by a user. One major goal in the field of parameterized local search is to outlin…

Venus (the bright thing), Jupiter (just above the lower cloud) and some #NLC on the morning of 29 July over Bochum, Germany - a sequence at the end of the big album https://www.facebook.com/media/set/?vanity=dan.fischer.393&set=a.10230849923126542

Analyzing and Evaluating the Behavior of Git Diff and Merge
Niels Glodny
https://arxiv.org/abs/2507.22071 https://arxiv.org/pdf/2507.22071

Analyzing and Evaluating the Behavior of Git Diff and Merge
Despite being widely used, the algorithms that enable collaboration with Git are not well understood. The diff and merge algorithms are particularly interesting, as they could be applied in other contexts. In this thesis, I document the main functionalities of Git: how diffs are computed, how they are used to run merges, and how merges enable more complex operations. In the process, I show multiple unexpected behaviors in Git, including the following: The histogram diff algorithm has pathologic…

Optical Emission-Line Properties of eROSITA-selected SDSS-V Galaxies
Nadiia G. Pulatova, Evgenii Rubtsov, Igor V. Chilingarian, Hans-Walter Rix, Mariia Demianenko, Kirill A. Grishin, Ivan Yu. Katkov, Donald P. Schneider, Catarina Aydar, Johannes Buchner, Mara Salvato, Andrea Merloni, Anton M. Koekemoer, Roberto J. Assef, Claudio Ricci, Dominika Wylezalek, Damir Gasymov, William Nielsen Brandt, Castalia Alenka Negrete Pe\~naloza, Sean Morrison, Scott F. Anderson, Franz E. Bauer, Hector …

Optical Emission-Line Properties of eROSITA-selected SDSS-V Galaxies
We present and discuss optical emission line properties obtained from the analysis of Sloan Digital Sky Survey (SDSS) spectra for an X-ray selected sample of 3684 galaxies (0.002 < z < 0.55), drawn from the eRASS1 catalog. We modeled SDSS-V DR19 spectra using the NBursts full spectrum fitting technique with E-MILES simple stellar populations (SSP) models and emission line templates to decompose broad and narrow emission line components for correlation with X-ray properties. We place the galaxie…

The 60-year-old man lying on the street, as far as anyone knew, was just a janitor hit by a drunk driver.
There was no mention of it on the local news, no obituary in the morning paper.
His name might have been Anonymous. But it wasn’t. 
His name was Peter Putnam.
He was a physicist who’d hung out with Albert Einstein, John Archibald Wheeler, and Niels Bohr,
and two blocks from the crash, in his run-down apartment, where his partner, Claude, was startled by a scr…

Finding Peter Putnam
The forgotten janitor who discovered the logic of the mind

Reflecting Human Values in XAI: Emotional and Reflective Benefits in Creativity Support Tools
Samuel Rhys Cox, Helena B{\o}jer Djern{\ae}s, Niels van Berkel
https://arxiv.org/abs/2506.17116

Reflecting Human Values in XAI: Emotional and Reflective Benefits in Creativity Support Tools
In this workshop paper, we discuss the potential for measures of user-centric benefits (such as emotional well-being) that could be explored when evaluating explainable AI (XAI) systems within the arts. As a background to this, we draw from our recent review of creativity support tool (CST) evaluations, that found a paucity of studies evaluating CSTs for user-centric measures that benefit the user themselves. Specifically, we discuss measures of: (1) developing intrinsic abilities, (2) emotiona…

Yue-Sai Kan is a Chinese-American television host, producer, author, entrepreneur and humanitarian. Renowned for her work in bridging the gap between China and the United States, she has been nicknamed "The Oprah of China". People, The Observer and ABS News have called her "the most famous woman in China".

Characterizing (multi-)semi-directed phylogenetic networks
Niels Holtgrefe, Katharina T. Huber, Leo van Iersel, Mark Jones, Vincent Moulton
https://arxiv.org/abs/2507.18772 http…

Characterizing (multi-)semi-directed phylogenetic networks
In evolutionary biology, phylogenetic networks are graphs that provide a flexible framework for representing complex evolutionary histories that involve reticulate evolutionary events. Recently phylogenetic studies have started to focus on a special class of such networks called semi-directed networks. These graphs are defined as mixed graphs that can be obtained by de-orienting some of the arcs in some rooted phylogenetic network, that is, a directed acyclic graph whose leaves correspond to a …