Tootfinder

from my link log —
Always-on processor magic: how “Find My” works while iPhone is powered off.
https://naehrdine.blogspot.com/2021/09/always-on-processor-magic-how-find-my.html
saved 2021-09-30

Always-on Processor magic: How Find My works while iPhone is powered off
Wireless and firmware hacking, PhD life, Technology

Sources detail how Tiger Global fueled the COVID-era unicorn bubble that burst ahead of the AI boom; the firm recently shared its $12.7B 2021 fund is now up 16% (Issie Lapowsky/Rest of World)
https://restofworld.org/2025/tiger-global-unicorn-investment-crash/

Big bets and broken unicorns: Tiger Global’s rise and reckoning
The fast-money pandemic era helped build billion-dollar startups around the world — then brought many down just as quickly. Will the AI boom be a repeat?

I never posted another "garage door fix" post after this one because we ended up getting a new garage door opener when the old one started failing even more and was beyond repair and also my partner was fed up with my hacks.
https://rasterweb.net/raster/2021/02/15/garag…

Garage Fix (Again 2!)
Fix it again, there...

This fall, Americans got to see what it’s like to go without a safety net for the hungry.
With the U.S. government shut down for multiple weeks
and Donald Trump refusing to fund SNAP, the federal food stamp program,
a panic set inamong the more than 40 million people who rely on it.
Families skipped meals,
and babies went unfed.
Food banks ran out of food, and some people turned to dumpster diving.
It was just a glimpse of what’s to come.
Start…

Wave of Tax Cuts Has Left Many States Vulnerable to Trump SNAP and Medicaid Crisis
President Donald Trump’s so-called One Big Beautiful Bill Act will shift billions in costs for SNAP and Medicaid to states. But with 26 having cut or eliminated state income taxes just since 2021, they may not have the money to continue the programs.

The FTC denied a petition from Scott Zuckerman, the CEO of a company that marketed “stalkerware” apps, to vacate or modify the FTC’s 2021 order banning him from offering any monitoring products and services and requiring him to implement an information security program.

FTC Denies Petition from SpyFone App CEO to Vacate 2021 Order
The Federal Trade Commission has denied a petition from Scott Z

Big news for the energy transition!
And a nice little 'told you so' moment for yours truly :)
In the first half of this year, renewables produced more electricity globally than coal, for the first time.
And 2025 is the date I predicted for this to happen, back in 2016, in a blog post for Ecofys! The score was 23%-40% at the time, with most of the renewables share still coming from hydro, and the prediction was less than obvious.

Anzahl der registrierten #Balkonkraftwerke in #Deutschland mit Stand vom 08.11.2025.
Der aktuelle Höchststand liegt bei 1175419 registrierten Anlagen.
Unplausible Inbetriebnahmedaten von 1900 bis 2017 wurden durch das Registrierungsdatum der

cofe: Collaboration in Financial Economics (2021)
Network of authors and commenters of papers in finantial economics, obtained from the acknowledgement sections of over 5,000 published research papers.
This network has 13967 nodes and 102039 edges.
Tags: Social, Directed, Weighted, Online, Collaboration
https://networks.ske…

Het lukte #Evilgoz wat Trump op 6 januari 2021 niet lukte: verloren verkiezingen omzetten in regeringsmacht. Een beetje slimmer, geniepiger en vooral veel effectiever dan hoe Trump het probeerde. Het recept? gewoon doen alsof de redelijke en constructieve oppositie de extremisten zijn (terwijl je dat natuurlijk zelf juist bent). En volhouden tot de rest zich aan jouw kant verzamelt. Het kabinet Yes…

For those interested in learning more about the Galleanisti, it's worth digging in to understand the context, IMHO. Like I said, I think that insurrectionary anarchism is generally a pretty bad strategy. I have quite a few critiques, that I won't go into now. But I also think it's worth understanding that part of history and how it all came together.
https://attackthesystem.com/2021/06/05/and-they-called-them-galleanisti/

Leaked letter: Tiger Global launches Private Investment Partners 17, a new fund targeting a raise between $2B and $3B, signaling a pivot away from megafunds (CNBC)
https://www.cnbc.com/2025/12/08/tiger-global-new-fund-ai-valuations.html

Tiger Global launches new fund eyeing between $2 billion and $3 billion as it takes more disciplined approach
Tiger first invested in OpenAI in 2021 at a valuation of less than $16 billion and in Waymo that same year at $39 billion.

🇺🇦 #NowPlaying on KEXP's #AstralPlane
Bardo Pond:
🎵 Be a Fish
#BardoPond
https://bardopondmusic.bandcamp.com/track/be-a-fish-2021-remaster
https://open.spotify.com/track/7yGcbBTvCkYcKNH3390jZc

Just listened to an interesting online talk (#Balloon Facility (https://www.tifr.res.in/bf/) - here are the slides about astronomical observations they do; see also https://arxiv.org/abs/2112.04877 for a 2021 review paper about this work and the mentioned papers https://www.aanda.org/articles/aa/full_html/2013/08/aa21614-13/aa21614-13.html ("Large-scale mapping of the massive star-forming region RCW38 in the [CII] and PAH emission") and https://www.aanda.org/articles/aa/full_html/2021/07/aa35739-19/aa35739-19.html ("[CII] emission properties of the massive star-forming region RCW 36 in a filamentary molecular cloud").

from my link log —
A bestiary of mathematical functions for systems designers.
https://brunodias.dev/2021/03/19/functions-for-system-designers.html
saved 2021-03-19

Seems worth posting this again:
#tech #ethics #DataEthics

Das war schockierend ahnungslos: Esra Limbacher ist direkt gewählter Wahlkreisabgeordneter und seit 2021 im Bundestag und dort stellv. Vorsitzender der SPD-Bundestagsfraktion. Er ist zudem seit 2023 Generalsekretär der SPD Saarland.
Was er gerade im Deutschlandfunk zum Klimaschutz gesagt hat - oder nicht sagen konnte, sollte der SPD Sorgen machen. Hört selbst:

Beschleunigung des Klimawandels? Interview Esra Limbacher, SPD-Fraktions-Vize

Your idea could be the next tool our community relies on.
Since 2021, the GÉANT Innovation Programme has supported 30 projects that grew into flagship community services like #eduroam and eduVPN.
With up to €50K in funding, 2025 projects can turn a pilot, proof of concept, or novel idea into something that benefits the entire

Uniqueness of entire function concerning derivatives and shifts
Sujoy Majumder, Nabadwip Sarkar
https://arxiv.org/abs/2510.10275 https://arxiv.org/pdf/2510…

Uniqueness of entire function concerning derivatives and shifts
In the paper, we investigate the uniqueness problem of entire function concerning its derivative and shift and obtain two results. On of our result solves the open problem posed by Majumder et al. (On a conjecture of Li and Yang, Hiroshima Math. J., 53 (2023), 199-223) and the other result improves and generalizes the recent result due to Huang and Fang (Unicity of entire functions concerning their shifts and derivatives, Comput. Methods Funct. Theory, 21 (2021), 523-532) in a large extend.

Anzahl der Inbetriebnahmen von Balkonkraftwerken pro Jahr in #Deutschland mit Stand vom 03.12.2025.
Unplausible Inbetriebnahmedaten von 1900 bis 2017 wurden durch das Registrierungsdatum der #Steckersolaranlage ersetzt.
👉 Zusatzlesestoff:

Malaysia's AI-Driven Education Landscape: Policies, Applications, and Comparative Insights for a Digital Future
Fadhilah Jamaluddin, Ahmad Hakiim Jamaluddin, Faridzah Jamaluddin, Faathirah Jamaluddin
https://arxiv.org/abs/2509.21858

Malaysia's AI-Driven Education Landscape: Policies, Applications, and Comparative Insights for a Digital Future
Artificial Intelligence (AI) is transforming education globally, and Malaysia is leveraging this potential through strategic policies to enhance learning and prepare students for a digital future. This article explores Malaysia's AI-driven education landscape, emphasising the National Artificial Intelligence Roadmap 2021-2025 and the Digital Education Policy. Employing a policy-driven analysis, it maps AI applications in pedagogy, curriculum design, administration, and teacher training across p…

Frequency-Aware Ensemble Learning for BraTS 2025 Pediatric Brain Tumor Segmentation
Yuxiao Yi, Qingyao Zhuang, Zhi-Qin John Xu
https://arxiv.org/abs/2509.19353 https://

Frequency-Aware Ensemble Learning for BraTS 2025 Pediatric Brain Tumor Segmentation
Pediatric brain tumor segmentation presents unique challenges due to the rarity and heterogeneity of these malignancies, yet remains critical for clinical diagnosis and treatment planning. We propose an ensemble approach integrating nnU-Net, Swin UNETR, and HFF-Net for the BraTS-PED 2025 challenge. Our method incorporates three key extensions: adjustable initialization scales for optimal nnU-Net complexity control, transfer learning from BraTS 2021 pre-trained models to enhance Swin UNETR's gen…

Adversarial Defense in Cybersecurity: A Systematic Review of GANs for Threat Detection and Mitigation
Tharcisse Ndayipfukamiye, Jianguo Ding, Doreen Sebastian Sarwatt, Adamu Gaston Philipo, Huansheng Ning
https://arxiv.org/abs/2509.20411

Adversarial Defense in Cybersecurity: A Systematic Review of GANs for Threat Detection and Mitigation
Machine learning-based cybersecurity systems are highly vulnerable to adversarial attacks, while Generative Adversarial Networks (GANs) act as both powerful attack enablers and promising defenses. This survey systematically reviews GAN-based adversarial defenses in cybersecurity (2021--August 31, 2025), consolidating recent progress, identifying gaps, and outlining future directions. Using a PRISMA-compliant systematic literature review protocol, we searched five major digital libraries. From 8…

Horizon-scale variability of M87* from 2017--2021 EHT observations
The Event Horizon Telescope Collaboration
https://arxiv.org/abs/2509.24593 https://arxiv…

Horizon-scale variability of M87* from 2017--2021 EHT observations
We report three epochs of polarized images of M87* at 230\,GHz using data from the Event Horizon Telescope (EHT) taken in 2017, 2018, and 2021. The baseline coverage of the 2021 observations is significantly improved through the addition of two new EHT stations: the 12\,m Kitt Peak Telescope and the Northern Extended Millimetre Array (NOEMA). All observations result in images dominated by a bright, asymmetric ring with a persistent diameter of $43.9\pm 0.6\,\muas$, consistent with expectations …

A note on the relation between one--step, outcome regression and IPW--type estimators of parameters with the mixed bias property
Andrea Rotnitzky, Ezequiel Smucler, James M. Robins
https://arxiv.org/abs/2509.22452

A note on the relation between one--step, outcome regression and IPW--type estimators of parameters with the mixed bias property
Bruns-Smith et al. (2025) established an algebraic identity between the one-step estimator and a specific outcome regression-type estimator for a class of parameters that forms a strict subset of the class introduced in Chernozhukov et al. (2022), assuming both nuisance functions are estimated as linear combinations of given features. They conjectured that this identity extends to the broader mixed bias class introduced in Rotnitzky et al. (2021). In this note, we prove their conjecture and fur…

Leaked a16z decks: $25B in net returns since its 2009 founding, including $11.2B in 2021, and 56 unicorn investments in the past 10 years, the most of any firm (Eric Newcomer/Newcomer)
https://www.newcomer.co/p/andreessen-horowitz-has-returned

Andreessen Horowitz Has Returned at Least $25 Billion Net to Its Backers Since the Firm's Founding in 2009
The firm has held its $900 million 2012 Fund III at 9.4x net TVPI.

Multi-spacecraft Measurements of the Evolving Geometry of the Solar Alfv\'en Surface Over Half a Solar Cycle
Samuel T. Badman, Michael L. Stevens, Stuart D. Bale, Yeimy J. Rivera, Kristopher G. Klein, Tatiana Niembro, Rohit Chhiber, Ali Rahmati, Phyllis L. Whittlesey, Roberto Livi, Davin E. Larson, Christopher J. Owen, Kristoff W. Paulson, Timothy S. Horbury, Jean Morris, Helen O'Brien, Jean-Baptiste Dakeyo, Jaye L. Verniero, Mihailo Martinovic, Marc Pulupa, Federico Fraschetti…

Multi-spacecraft Measurements of the Evolving Geometry of the Solar Alfvén Surface Over Half a Solar Cycle
The geometry of a star's Alfvén surface determines stellar angular momentum loss, separates a causally distinct 'corona' and stellar wind, and potentially affects exoplanetary habitability. The solar Alfvén surface is the only such structure that is directly measurable and since 2021, has been routinely measured in situ by NASA's Parker Solar Probe (Parker). We use these unique measurements in concert with Solar Orbiter and L1 in situ data spanning the first half of the Solar Cycle 25 in time…

Female Student Population at Kabul University Before the 2021 Ban: Trends, Gender Parity, and Faculty-Level Dynamics
Jawid Ahmad Baktash, Mursal Dawodi
https://arxiv.org/abs/2509.20406

Female Student Population at Kabul University Before the 2021 Ban: Trends, Gender Parity, and Faculty-Level Dynamics
For nearly two decades after 2001, Afghanistan's higher education sector expanded rapidly, with Kabul University serving as a central site of women's academic participation. Drawing on administrative records of student populations from 2016-2019 (Islamic calendar 1395-1398), this study examines gender distributions across shifts, faculties, and departments, with particular attention to STEM versus non-STEM fields. At Kabul University, the morning shift refers to the main daytime cohort (includi…

Nachtrag: Änderung der Berechnung bezüglich https://mastodon.online/@tinoeberl/115236719296242946.
Der Filter auf "in Betrieb" ändert die Zahlen leider rückwirkend. Also:
Anzahl der Inbetriebnahmen von Balkonkraftwerken pro Jahr in

Multiwavelength study of Galactic PeVatron LHAASO J0341 5258
P. Bangale (for the VERITAS Collaboration), X. Wang (for the HAWC Collaboration)
https://arxiv.org/abs/2509.20515 ht…

Multiwavelength study of Galactic PeVatron LHAASO J0341+5258
Galactic PeVatrons are astrophysical sources accelerating particles up to a few PeV (~10$^{15}$ eV). The primary method to identify both electron and proton PeVatrons is the observation of $γ$-ray radiation at ultra-high energies (UHE; E$>$100 TeV). In 2021, LHAASO detected 14 steady $γ$-ray sources with photon energies above 100 TeV and up to 1.4 PeV. Most of these sources can be plausibly associated with objects such as supernova remnants, pulsar wind nebulae, and stellar clusters. However,…

Bi-Lipschitz embedding properties of lamplighter graphs on weighted and unweighted trees
Charlotte Melby, Beata Randrianantoanina
https://arxiv.org/abs/2509.25421 https://

Bi-Lipschitz embedding properties of lamplighter graphs on weighted and unweighted trees
In 2021 Baudier, Motakis, Schlumprecht, and Zsák proved that if a sequence of graphs $(G_k)_{k\in{\mathbb{N}}}$ contains the sequence of complete graphs with uniformly bounded distortion, then the sequence of lamplighter graphs on $G_k$'s contains Hamming cubes with uniformly bounded distortion and asked whether the converse holds. They suggested that a sequence of trees with edges replaced by paths of ``moderately growing'' lengths may be a counterexample. We prove that indeed this is the…

VBS hat für einen Typenentscheid F-35 vorgespurt und den Bundesrat entmachtet: Es gab ein Gutachten, das das VBS im Juni 2021 ausgerechnet vor der Bundesratsdebatte über den Typenentscheid beim Bundesamt für Justiz in Auftrag gegeben hatte. Das Gutachten hielt fest, dass der Bundesrat verpflichtet sei, sich für den Sieger der Evaluation zu entscheiden – sofern es bei Preis und Fähigkeiten keine weitgehende Gleichwertigkeit gebe. Genauso hat Amherd dann argumentiert.
https://www.woz.ch/2541/neues-vom-f-35/ich-sage-nur-top-gun/!NK1QK1H80V9T

Kumulativer Zubau von #Balkonsolarleistung in #Deutschland mit Stand vom 03.12.2025.
Die summierte Leistung aller offiziell registrierten #Steckersolaranlagen beträgt b…

The information flow among Green Bonds exchange traded funds
Wenderson Gomes Barbosa, Kerolly Kedma Felix do Nascimento, Fabio Sandro dos Santos, Tiago A. E. Ferreira
https://arxiv.org/abs/2509.19285

from my link log —
Rust programs written entirely in Rust, without libc.
https://blog.sunfishcode.online/rust-programs-entirely-in-rust/
saved 2021-09-08