Tootfinder

The error-correcting pair for several classes of NMDS linear codes
Dong He, Zhaohui Zhang, Qunying Liao
https://arxiv.org/abs/2506.07380 https://

The error-correcting pair for several classes of NMDS linear codes
The error-correcting pair is a general algebraic decoding method for linear codes. The near maximal distance separable (NMDS) linear code is a subclass of linear codes and has applications in secret sharing scheme and communication systems due to the efficient performance, thus we focus on the error-correcting pair of NMDS linear codes. In 2023, He and Liao showed that for an NMDS linear code $\mathcal{C}$ with minimal distance $2\ell+1$ or $2\ell+2$, if $\mathcal{C}$ has an $\ell$-error-correc…

Steps towards an Ecology for the Internet
Anil Madhavapeddy, Sam Reynolds, Alec P. Christie, David A. Coomes, Michael W. Dales, Patrick Ferris, Ryan Gibb, Hamed Haddadi, Sadiq Jaffer, Josh Millar, Cyrus Omar, William J. Sutherland, Jon Crowcroft
https://arxiv.org/abs/2506.06469

Steps towards an Ecology for the Internet
The Internet has grown from a humble set of protocols for end-to-end connectivity into a critical global system with no builtin "immune system". In the next decade the Internet will likely grow to a trillion nodes and need protection from threats ranging from floods of fake generative data to AI-driven malware. Unfortunately, growing centralisation has lead to the breakdown of mutualism across the network, with surveillance capitalism now the dominant business model. We take lessons from from b…

A #pandemicpond post.
The bog-barrels that I added last summer have done an absolutely incredible job at keeping the water crystal clear and almost completely algae free this summer.
Only the much warmer stream between the ponds has more algae than I really like.
I also added the bigger pump at the same time which likely helped a little but the added flow also raised the level of the top pond just above the liner in some spots. So yesterday when I topped it up, I took away the flat border stones to inspect where it was leaking. It turns out, almost everywhere!
So I added some handfuls of pebble taken from the #poolpond filter since I know there is extra there..: and stuck it under the liner to raise it an inch or two all the way around.
Here is a before and after. The first pic with the purple lilly
pads is last year with the algae that was common in the summer before the big filters. The second pic is a few weeks ago when the pond was full, clear, but overflowing, notice the water overtop the flat stones. The last two pics are today after raising the liner a little under the stones.
And a pic of the happy dual-barrel bogs (which are just small versions of the giant filter I just finished in the backyard). The marsh marigolds have not bloomed in the bog barrels. Not sure if they will this year. It is quite shady for them.
Oh and a lilly is about to bloom!The fish are also very active and happy.
#backyardproject #diy #ponds #gardening #watergarden #bloomscrolling #goldfish

Breaking the mould of Social Mixed Reality -- State-of-the-Art and Glossary
Marta Bie\'nkiewicz, Julia Ayache, Panayiotis Charalambous, Cristina Becchio, Marco Corragio, Bertram Taetz, Francesco De Lellis, Antonio Grotta, Anna Server, Daniel Rammer, Richard Kulpa, Franck Multon, Azucena Garcia-Palacios, Jessica Sutherland, Kathleen Bryson, St\'ephane Donikian, Didier Stricker, Beno\^it Bardy

Breaking the mould of Social Mixed Reality -- State-of-the-Art and Glossary
This article explores a critical gap in Mixed Reality (MR) technology: while advances have been made, MR still struggles to authentically replicate human embodiment and socio-motor interaction. For MR to enable truly meaningful social experiences, it needs to incorporate multi-modal data streams and multi-agent interaction capabilities. To address this challenge, we present a comprehensive glossary covering key topics such as Virtual Characters and Autonomisation, Responsible AI, Ethics by Desi…

Influence of oxygen-defects on intraband terahertz conductivity of carbon nanotubes
Maksim Paukov, Shuang Sun, Dmitry Krasnikov, Arina Radivon, Gennady Komandin, Andrey Vyshnevyy, Emil Chiglintsev, Stanislav Colar, Kirill Brekhov, Kirill Zaytsev, Sergei Garnov, Nadzeya Valynets, Albert Nasibulin, Aleksey Arsenin, Valentyn Volkov, Alexander Chernov, Yan Zhang, Maria Burdanova

Influence of oxygen-defects on intraband terahertz conductivity of carbon nanotubes
The exceptional charge transport properties of single-walled carbon nanotubes (SWCNTs) enable numerous ultrafast optoelectronic applications. Modifying SWCNTs by introducing defects significantly impacts the performance of nanotube-based devices, making defect characterization crucial. This research tracked these effects in oxygen plasma-treated SWCNT thin films. Sub-picosecond electric fields of varying strengths and additional photoexcitation were used to assess how defects influence charge c…

I'm reading Witch Hat Atelier right now (checked out of my local library) and it's top-notch amazing, including the plot, world-building, ethics, character designs, and of course three staggering artistic quality, both in raw illustration quality and artful compositions. It's not shy with playing with the manga form either, with lots of stunning unique panels and active gutters. I also just realized the "shounen manga for girls" formula I've been looking for (which is a formulation that's nearly as important for boys to have access to as girls). But I also really love the humor, including ridiculous puns that are often well-translated. In this scene, the main character Coco has forgotten she's using a mist form spell and ends up blowing away her mist-form body even as age rushes into a chaotic situation, leading to this pun.
#AmReading

First constraints on the local ionization topology in front of two quasars at z ~ 7.5
Timo Kist, Joseph F. Hennawi, Frederick B. Davies, Eduardo Ba\~nados, Sarah E. I. Bosman, Zheng Cai, Anna-Christina Eilers, Xiaohui Fan, Zolt\'an Haiman, Hyunsung D. Jun, Yichen Liu, Jinyi Yang, Feige Wang
https://arxiv.org/abs/2508.21818

First constraints on the local ionization topology in front of two quasars at z ~ 7.5
Thus far, Lyman-$α$ damping wings towards quasars have been used to probe the \textit{global} ionization state of the foreground intergalactic medium (IGM). A new parameterization has demonstrated that the damping wing signature also carries \textit{local} information about the distribution of neutral hydrogen (HI) in front of the quasar before it started shining. Leveraging a recently introduced Bayesian \texttt{JAX}-based Hamiltonian Monte Carlo (HMC) inference framework, we derive constrain…

Some short notes on oriented line graphs and related matrices
Cyriac Antony, Jacob Antony
https://arxiv.org/abs/2507.13821 https://ar…

Some short notes on oriented line graphs and related matrices
The notion of oriented line graphs is introduced by Kotani and Sunada, and they are closely related to Hashimato's non-backtracking matrix. It is known that for regular graphs $G$, the eigenvalues of the adjacency matrix of the oriented line graph $\vec{L}(G)$ of $G$ are the reciprocals of the poles of the Ihara zeta function of $G$. We determine the characteristic polynomial of the adjacency matrix of the underlying undirected graph of $\vec{L}(G)$ and the skew-symmetric adjacency matrix of $\…

Pulsed laser synthesis of mesoporous metal chalcogenide thin films
Dorien E. Carpenter, Zahra Nasiri, Nithesh R. Palagiri, Kamron L. Strickland, Sumner B. Harris, David B. Geohegan, Renato P. Camata
https://arxiv.org/abs/2508.17443

Pulsed laser synthesis of mesoporous metal chalcogenide thin films
Mesoporous films of the metal chalcogenide $β$-FeSe were grown on MgO substrates by KrF pulsed laser deposition (PLD) in an argon background. At 100 mTorr, gated intensified charge-coupled device imaging and ion probe measurements showed that the plasma plume responsible for crystal growth initially comprised three components, with distinct expansion velocities. Plume interactions with the substrate heater and ablation target gave rise to complex dynamics, including collisions between the char…