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@toxi@mastodon.thi.ng
2025-06-06 11:19:32

#ThrowbackThursday meets #FootpathFriday
(Dolomites, late October 2024)
#LandscapePhotography

27 sec 360 degree camera pan near a small path in a majestic high alpine valley in the Dolomites in autumn 2024. One side (higher up parts) already start looking wintry, the opposite sides still in warm sunlight and the rocks are gray, yellow and peach colored. Big talus fields, some overgrown with dwarf mountain pines and larches in bright rusty orange.
@Dragofix@mastodontti.fi
2025-06-05 21:27:41

Ympäristöjärjestöt tippuvat kaivosalan kutsulistalta – ”Suosittelisin peliä avoimin kortein”, sanoo Hannele Pokka #luonto

Ympäristöjärjestöt tippuvat kaivosalan kutsulistalta – ”Suosittelisin peliä avoimin kortein”, sanoo Hannele Pokka
Torstaina alkavat Kaivosalan ympäristönsuojelupäivät avautuivat Suomen luonnonsuojeluliitolle vasta taivuttelun jälkeen.

@hikingdude@mastodon.social
2025-05-31 15:32:27

Hi friends!
I set my alarm to 5am and headed out for a nice walk. It was getting warm, so I started early. - and it was just so good to do so!
A nice 6h walk with lots of views, lots of photos and just enjoying being out. End the #summit just for me 😍
On the way up I noted all places where I could refuel later using my water filter. Seriously: why didn't I buy that waaays ear…

A serene forest path bathed in warm sunlight, surrounded by lush green foliage. The tall trees form a natural canopy, filtering the light to create a peaceful and inviting atmosphere. The trail winds gently forward, offering a sense of adventure and tranquility—an ideal place for a refreshing walk in nature.
A breathtaking hiking adventure through a lush forest, with towering trees and vibrant greenery surrounding the winding trail. Sunlight filters through the leaves, casting a warm glow on the path. In the distance, majestic snow-capped mountains stand proudly against the clear blue sky, completing the stunning natural scenery. The image exudes a sense of peace, freedom, and appreciation for the great outdoors, making it a perfect representation of an uplifting and invigorating exploration in nat…
A scenic view from a grassy hilltop with a wooden cross and a triangular structure marking the summit. In the background, rugged mountains with rocky peaks and valleys stretch under a clear blue sky. The landscape includes patches of green grass and scattered yellow flowers.
@arXiv_eessSY_bot@mastoxiv.page
2025-06-05 09:49:21

This arxiv.org/abs/2506.01226 has been replaced.
initial toot: mastoxiv.page/@arXiv_ees…

React to Surprises: Stable-by-Design Neural Feedback Control and the Youla-REN
We study parameterizations of stabilizing nonlinear policies for learning-based control. We propose a structure based on a nonlinear version of the Youla-Kučera parameterization combined with robust neural networks such as the recurrent equilibrium network (REN). The resulting parameterizations are unconstrained, and hence can be searched over with first-order optimization methods, while always ensuring closed-loop stability by construction. We study the combination of (a) nonlinear dynamics, …

@qurlyjoe@mstdn.social
2025-05-31 02:34:46

#caturday

Cartoon. A man in a blue suit sits at a desk, his head resting in his right hand, a bored, resigned look on his face. There is a quill pen in an ink jar by his right elbow. A couple pages of sheet music are spread across the desk top. A yellow cat with brown stripes (perpendicular to the spine) sits on the papers, its tail curled into the air, looking away from the man. Caption. The real reason for Schubert’s “Unfinished” symphony.
@hikingdude@mastodon.social
2025-05-31 15:32:27

Hi friends!
I set my alarm to 5am and headed out for a nice walk. It was getting warm, so I started early. - and it was just so good to do so!
A nice 6h walk with lots of views, lots of photos and just enjoying being out. End the #summit just for me 😍
On the way up I noted all places where I could refuel later using my water filter. Seriously: why didn't I buy that waaays ear…

A serene forest path bathed in warm sunlight, surrounded by lush green foliage. The tall trees form a natural canopy, filtering the light to create a peaceful and inviting atmosphere. The trail winds gently forward, offering a sense of adventure and tranquility—an ideal place for a refreshing walk in nature.
A breathtaking hiking adventure through a lush forest, with towering trees and vibrant greenery surrounding the winding trail. Sunlight filters through the leaves, casting a warm glow on the path. In the distance, majestic snow-capped mountains stand proudly against the clear blue sky, completing the stunning natural scenery. The image exudes a sense of peace, freedom, and appreciation for the great outdoors, making it a perfect representation of an uplifting and invigorating exploration in nat…
A scenic view from a grassy hilltop with a wooden cross and a triangular structure marking the summit. In the background, rugged mountains with rocky peaks and valleys stretch under a clear blue sky. The landscape includes patches of green grass and scattered yellow flowers.
@Dragofix@mastodontti.fi
2025-05-31 21:37:32

Hömötiainen on hätää kärsimässä – näin voit auttaa pieninokkaista kolopesijää #linnut

Hömötiainen on hätää kärsimässä – näin voit auttaa pieninokkaista kolopesijää
Hömötiaiset ovat arkoja ja tarvitsevat elinympäristöönsä lahoja lehtipuupökkelöitä ja puiden suojaa. Näiden puute on johtanut lajin merkittävään vähenemiseen.

@YaleDivinitySchool@mstdn.social
2025-04-22 19:27:09

Statement by Dean Greg Sterling.
------
Like many around the world, I am deeply saddened by the death of Pope Francis. I am grateful, too, for all he did to advance currents of Christianity that are too seldom seen today...
Read the rest facebook.com/share/p/15KhqHmUk

Photo of Pope Francis by Jeffrey Bruno, taken at the Canonization of Pope John XXIII and Pope John Paul II. Use licensed under Creative Commons.

Yale Divinity School
Statement by Dean Greg Sterling. ------ Like many around the world, I am deeply saddened by the death of Pope Francis. I am grateful, too, for all he did to advance currents of Christianity that...

@AmazingMeagen@historians.social
2025-05-06 12:41:54

A fun glimpse on a North London street today.
#StreetArt
#PublicArt
#Astronaut
#London

A "London yellow brick" wall with window positioned close to roofline. An astronaut's closed helmet and upper part of suit positioned to look like someone is looking out and to the right of the window.
@arXiv_eessSY_bot@mastoxiv.page
2025-06-03 07:42:51

React to Surprises: Stable-by-Design Neural Feedback Control and the Youla-REN
Nicholas H. Barbara, Ruigang Wang, Alexandre Megretski, Ian R. Manchester
arxiv.org/abs/2506.01226

React to Surprises: Stable-by-Design Neural Feedback Control and the Youla-REN
We study parameterizations of stabilizing nonlinear policies for learning-based control. We propose a structure based on a nonlinear version of the Youla-Kučera parameterization combined with robust neural networks such as the recurrent equilibrium network (REN). The resulting parameterizations are unconstrained, and hence can be searched over with first-order optimization methods, while always ensuring closed-loop stability by construction. We study the combination of (a) nonlinear dynamics, …