Tootfinder

Baby's first unun!
My #AmateurRadio journey continues with making some of my own equipment...
I wanted to be able to connect either an EFHW or an EFRW to my KX3, but move the actual antenna away from the radio, so that I can POTA with other people close enough to talk, while keeping the antennas for the different out of each others' near field so they don't interere. To …

This https://arxiv.org/abs/2505.19521 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

Learning Dynamics under Environmental Constraints via Measurement-Induced Bundle Structures
Learning unknown dynamics under environmental (or external) constraints is fundamental to many fields (e.g., modern robotics), particularly challenging when constraint information is only locally available and uncertain. Existing approaches requiring global constraints or using probabilistic filtering fail to fully exploit the geometric structure inherent in local measurements (by using, e.g., sensors) and constraints. This paper presents a geometric framework unifying measurements, constraints…

Bearing #Connections I traversed afar; yet sorrowing, sighing, bleeding, dying, no reverse rainbow.
#Connections722
Puzzle № 722
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Trump uses Propecia for hair loss...
"His genitals shrank and changed shape" - National Zero
https://nationalzero.com/2025/06/02/his-genitals-shrank-and-changed-shape/

"EV battery recycling key to easing future lithium supply constraints, modeling study shows"
#EV #ElectricVehicle #Cars

EV battery recycling key to easing future lithium supply constraints, modeling study shows
Lightweight, powerful lithium-ion batteries are crucial for the transition to electric vehicles, and global demand for lithium is set to grow rapidly over the next 25 years. A new analysis from the University of California, Davis, published May 29 in Nature Sustainability, looks at how new mining operations and battery recycling could meet that demand. Recycling could play a big role in easing supply constraints, the researchers found.

An interview with Henry Blodget on BI's layoffs, media market changes in the past five years, why the future is direct distribution and subscriptions, and more (Andy Meek/Forbes)
https://www.forbes.com/sites/andymeek/2025

Henry Blodget On Business Insider Layoffs: 'The Market Has Changed'
Business Insider co-founder Henry Blodget weighs in on the site's layoffs and how AI is reshaping the future of journalism.

Meta agrees to acquire power from Constellation's operating Illinois nuclear plant, in a 20-year deal starting in mid-2027 when a state subsidy expires (Bloomberg)
https://www.bloomberg.com/news/articles/20

🎉 perfSONAR turns 20! 🎉
What started with a single line of code in 2001 has grown into a worldwide network performance monitoring infrastructure, spanning all 7 continents with:
✅ 20 years of continuous operation
✅ 6 leading R&E networks driving its development
✅ over 2,000 registered instances deployed across 1,000 organizations
Learn more about perfSONAR’s journey and impact over the past 20 years:

perfSONAR Celebrates 20 Years of Simplifying Global Research Collaboration Through Standardized Network Measurement and Testing | GÉANT CONNECT Online
April 2, 2025 — The global research and education (R&E) community is celebrating a major milestone in high-performance networking and collaboration: the 20th anniversary of perfSONAR. Since April 2005, this powerful, open-source toolkit has enabled researchers and network operators to measure and troubleshoot performance across diverse network environments. perfSONAR’s reach has extended to all seven

Constrained Stein Variational Gradient Descent for Robot Perception, Planning, and Identification
Griffin Tabor, Tucker Hermans
https://arxiv.org/abs/2506.00589

Constrained Stein Variational Gradient Descent for Robot Perception, Planning, and Identification
Many core problems in robotics can be framed as constrained optimization problems. Often on these problems, the robotic system has uncertainty, or it would be advantageous to identify multiple high quality feasible solutions. To enable this, we present two novel frameworks for applying principles of constrained optimization to the new variational inference algorithm Stein variational gradient descent. Our general framework supports multiple types of constrained optimizers and can handle arbitra…

Meet Aleksandra Lazić – the first recipient of the Sarah Jones Award!
Recently, our very own Leonardo Marino sat down with Aleksandra to talk about her passion for open science, the journey that led her to receiving the award, and what’s next on the horizon.
➡️ Read her insights in the highlights below; discover the full interview here:

Interview with Aleksandra Lazić – first recipient of the Sarah Jones Award | GÉANT CONNECT Online
Aleksandra Lazić, PhD and co-founder of REPOPSI, was awarded the Sarah Jones Award for her outstanding contribution to Open Science collaboration and inclusion.