Tootfinder

This https://arxiv.org/abs/2312.13227 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Relative cell complexes in closure spaces
We give necessary and sufficient conditions for certain pushouts of topological spaces in the category of Cech's closure spaces to agree with their pushout in the category of topological spaces. We prove that in these two categories, the constructions of cell complexes by a finite sequence of closed cell attachments, which attach arbitrarily many cells at a time, agree. Likewise, the constructions of CW complexes relative to a compactly generated weak Hausdorff space that attach only finitely m…

Evidence for SiO cloud nucleation in the rogue planet PSO J318
P. Molli\`ere, H. K\"uhnle, E. C. Matthews, Th. Henning, M. Min, P. Patapis, P. -O. Lagage, L. B. F. M. Waters, M. G\"udel, Cornelia J\"ager, Z. Zhang, L. Decin, B. A. Biller, O. Absil, I. Argyriou, D. Barrado, C. Cossou, A. Glasse, G. Olofsson, J. P. Pye, D. Rouan, M. Samland, S. Scheithauer, P. Tremblin, N. Whiteford, E. F. van Dishoeck, G. \"Ostlin, T. Ray

Evidence for SiO cloud nucleation in the rogue planet PSO J318
Silicate clouds are known to significantly impact the spectra of late L-type brown dwarfs, with observable absorption features at ~ 10 micron. JWST has reopened our window to the mid-infrared with unprecedented sensitivity, bringing the characterization of silicates into focus again. Using JWST, we characterize the planetary-mass brown dwarf PSO J318.5338-22.8603, concentrating on any silicate cloud absorption the object may exhibit. PSO J318's spectrum is extremely red, and its flux is variabl…

Effect of Haptic Feedback on Avoidance Behavior and Visual Exploration in Dynamic VR Pedestrian Environment
Kyosuke Ishibashi, Atsushi Saito, Zin Y. Tun, Lucas Ray, Megan C. Coram, Akihiro Sakurai, Allison M. Okamura, Ko Yamamoto
https://arxiv.org/abs/2506.20952

Effect of Haptic Feedback on Avoidance Behavior and Visual Exploration in Dynamic VR Pedestrian Environment
Human crowd simulation in virtual reality (VR) is a powerful tool with potential applications including emergency evacuation training and assessment of building layout. While haptic feedback in VR enhances immersive experience, its effect on walking behavior in dense and dynamic pedestrian flows is unknown. Through a user study, we investigated how haptic feedback changes user walking motion in crowded pedestrian flows in VR. The results indicate that haptic feedback changed users' collision av…

Homomorphism Indistinguishability and Game Comonads for Restricted Conjunction and Requantification
Georg Schindling
https://arxiv.org/abs/2506.19746 https…

Homomorphism Indistinguishability and Game Comonads for Restricted Conjunction and Requantification
The notion of homomorphism indistinguishability offers a combinatorial framework for characterizing equivalence relations of graphs, in particular equivalences in counting logics within finite model theory. That is, for certain graph classes, two structures agree on all homomorphism counts from the class if and only if they satisfy the same sentences in a corresponding logic. This perspective often reveals connections between the combinatorial properties of graph classes and the syntactic struc…

The Cradle of Civilization
Assyria Babylonia Sumer Persia Elam Medes Parthian
Babylonia - Born Again
https://www.youtube.com/watch?v=5Iy4u3E6iLA
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DIODATO - Babilonia

Scott Logic Lead Developer Darren Smith shares a report of carbon emission measuring software tools in 2025, their scope, and reviews these in the context of principal cloud service providers' offerings, including Google Cloud, Microsoft Azure, and Amazon AWS.
"Tools for measuring Cloud Carbon Emissions (updated for 2025)"

Tools for measuring Cloud Carbon Emissions (updated for 2025)
In this post I'll discuss ways of estimating the emissions caused by your Cloud workloads as a first step towards reaching your organisation's Net Zero goals.

Negative capacitance overcomes Schottky-gate limits in GaN high-electron-mobility transistors
Asir Intisar Khan, Jeong-Kyu Kim, Urmita Sikder, Koushik Das, Thomas Rodriguez, Rohith Soman, Srabanti Chowdhury, Sayeef Salahuddin
https://arxiv.org/abs/2506.16758

Negative capacitance overcomes Schottky-gate limits in GaN high-electron-mobility transistors
For high-electron-mobility transistors based on two-dimensional electron gas (2DEG) within a quantum well, such as those based on AlGaN/GaN heterostructure, a Schottky-gate is used to maximize the amount of charge that can be induced and thereby the current that can be achieved. However, the Schottky-gate also leads to very high leakage current through the gate electrode. Adding a conventional dielectric layer between the nitride layers and gate metal can reduce leakage; but this comes at the p…

Self-Supervised Distillation of Legacy Rule-Based Methods for Enhanced EEG-Based Decision-Making
Yipeng Zhang, Yuanyi Ding, Chenda Duan, Atsuro Daida, Hiroki Nariai, Vwani Roychowdhury
https://arxiv.org/abs/2507.14542

Self-Supervised Distillation of Legacy Rule-Based Methods for Enhanced EEG-Based Decision-Making
High-frequency oscillations (HFOs) in intracranial Electroencephalography (iEEG) are critical biomarkers for localizing the epileptogenic zone in epilepsy treatment. However, traditional rule-based detectors for HFOs suffer from unsatisfactory precision, producing false positives that require time-consuming manual review. Supervised machine learning approaches have been used to classify the detection results, yet they typically depend on labeled datasets, which are difficult to acquire due to t…

Far-field directionality control of coupled InP nanowire lasers
Lukas R. J\"ager (Friedrich Schiller University Jena, Australian National University), Wei Wen Wong (Australian National University), Carsten Ronning (Friedrich Schiller University Jena), Hark Hoe Tan (Australian National University)
https://arxiv.org/abs/2507.18416

Far-field directionality control of coupled InP nanowire lasers
Nanowire (NW) lasers hold great promise as compact, coherent on-chip light sources that are crucial for next-generation optical communication and imaging technologies. However, controlling their emission directionality has been hindered by the complexities of lasing mode engineering and fabrication. Here, we demonstrate spatially-engineered far-field emission from vertically emitting InP NW lasers by establishing precise control over the optical coupling between site-selective NWs, without rely…

> New partnership sees Google Cloud agree to work with the UK government in helping public services use advanced tech to shake off decades old ‘ball and chain’ legacy contracts which leave essential services vulnerable to cyberattack.
"ball and chain" being a government code term for Windows?

New Google partnership will help rid taxpayer of ‘ball and chain’ legacy tech and aim to upskill 100,000 civil servants in tech and AI
New partnership with Google Cloud will help modernise outdated government IT, upskill 100,000 civil servants in digital and AI by 2030, and secure better tech deals for the taxpayer.