Tootfinder

Jumping genes are causing genetic changes in polar bears | The Week
https://theweek.com/environment/jumping-genes-polar-bears-dna-climate-change-arctic-genetics

Concentrated N-dimensional AMM with Polar Coordinates in Rust
Vasily Tolstikov, Marcus Wentz, Joseph Schiarizzi, Derek Ding
https://arxiv.org/abs/2510.05428 https://

Concentrated N-dimensional AMM with Polar Coordinates in Rust
We expand on the recent development of n-dimensional automated market makers for stablecoins by showing a way to build concentrated liquidity positions with ticks in polar coordinates in Rust, including the featured ability to skew said concentrated liquidity. We highlight the risk of stacking too many stablecoin pools and how to hedge said risk.

We’re proud to support Polar Connect Step 2 (24-EU-DIG-PC2) as an Associated Partner, working alongside the Swedish Polar Research Secretariat, NORDUnet, GlobalConnect, CSC, and the Swedish Research Council (the project coordinator).
With the Grant Agreement now signed, PC2 takes a major step toward realising Polar Connect – a resilient Arctic submarine cable system linking Europe, North America, and East Asia for the benefit of the global internet.
🔗 Read more:

❄️ It’s freezing cold outside here in Germany, and this is an interesting explainer of why that is: a warming event in the polar region is leading to an early collapse of the polar vortex, so Europe and North America are flooded with cold air, while the North Pole is unusually warm. #weather #climate

Stratospheric Warming Watch: Polar Vortex Collapse has begun, with cold air and snowfall impacts expected
A Stratospheric Warming is now collapsing the Polar Vortex, with polar air and snow forecast across the United States, Canada and Europe in December

Radio emission from beyond the light cylinder in millisecond pulsars
Michael Kramer (MPIfR), Simon Johnston (CSIRO)
https://arxiv.org/abs/2510.05778 https://

Radio emission from beyond the light cylinder in millisecond pulsars
A striking aspect of the radio profiles of many millisecond pulsars (MSPs) is that they consist of components separated from each other by regions lacking in emission. We devise a technique for determining "disjoint" from "contiguous" components and show that 35% of MSPs have disjoint components as opposed to only 3% of the slow pulsar population. We surmise that the pulsars with these disjoint components show evidence for both emission above the polar cap and from the current sheet beyond the …

"Polar bears may be adapting to survive warmer climates thanks to their ‘jumping genes’"
#PolarBears #Climate #ClimateChange

Polar bears may be ‘rewriting’ their own DNA to adapt to climate
Polar bears face “total extinction” by the end of this century, but scientists have found a small beacon of “hope”.

Blueberry species (genus Vaccinium) circled the Northern Hemisphere to travel from North America to Hawai'i— and then closed the loop to hybridize with a North American species
#science

On an island in the Arctic Ocean, in a region that is warming as much as seven times as fast as the rest of the planet, the food chain is being turned upside down.
Underwater kelp forests are surging into once-frozen waters, replacing other native species.
Reindeer, cut off from traditional foraging routes over vanishing sea ice, now graze on seaweed when they cannot reach inland grasses and lichen.
And polar bears, deprived of the ice platforms they once used to hunt seals, …

Curious Reindeer and Charging Polar Bears: The Changing Wildlife at the Top of the Earth
Climate change is transforming ecosystems in the far north. An international team of scientists has made some surprising discoveries.

Polar Filaments Capture High Latitude Solar Poloidal Field Interactions and can Foretell the Future Sunspot Cycle Amplitude before Polar Field Precursors
Srinjana Routh, Shaonwita Pal, Dibyendu Nandy, Subhamoy Chatterjee, Dipankar Banerjee, Mohd. Saleem Khan
https://arxiv.org/abs/2510.12142

Polar Filaments Capture High Latitude Solar Poloidal Field Interactions and can Foretell the Future Sunspot Cycle Amplitude before Polar Field Precursors
Polar fields at the minimum of a sunspot cycle -- which are a manifestation of the radial component of the Sun's poloidal field -- are deemed to be the best indicator of the strength of the toroidal component, and hence the amplitude of the future sunspot cycle. However, the Sun's polar magnetic fields are difficult to constrain with ground-based or space-based observations from near the plane-of-ecliptic. In this context, polar filaments -- dark, elongated structures that overlie polarity inve…

NFL Week 15 weather: How polar vortex, snow, rain, frigid temperatures could impact several key NFL games

https://www.cbssports.com/nfl/news/nfl-week-15-weather-polar-…

The polar debris disc around 99 Herculis: A potential signpost for polar circumbinary planets
Jeremy L. Smallwood, William DeRocco, Zhizhen Qin, Antranik A. Sefilian
https://arxiv.org/abs/2510.08698

The polar debris disc around 99 Herculis: A potential signpost for polar circumbinary planets
The nearby binary star system 99 Herculis (99 Her) is host to the only known polar-aligned circumbinary debris disc. We investigate the hypothesis that the narrow structure of this circumbinary disc is sculpted by the gravitational influence of one or more unseen polar circumbinary planets. We first establish the theoretically viable parameter space for a sculpting planet by considering dynamical stability and clearing mechanisms, including the chaotic zone, Hill radius, diffusion, and polar al…

🇺🇦 #NowPlaying on BBCRadio3's #CarolsAcrossTheCountryASeasonalJourney
Alan Silvestri & Alan Silvestri:
🎵 The Polar Express (Suite)
#AlanSilvestri
https://open.spotify.com/track/3mfEv2KipK7lVWwocNx46Y

Mechanical coupling of polar topologies and oxygen octahedra rotations in PbTiO$_3$/SrTiO$_3$ superlattices
Fernando G\'omez-Ortiz, Louis Bastogne, Xu He, Philippe Ghosez
https://arxiv.org/abs/2510.08216

Mechanical coupling of polar topologies and oxygen octahedra rotations in PbTiO$_3$/SrTiO$_3$ superlattices
PbTiO$_3$/SrTiO$_3$ artificial superlattices recently emerged as a prototypical platform for the emergence and study of polar topologies. While previous studies mainly focused on the polar textures inherent to the ferroelectric PbTiO$_3$ layers, the oxygen octahedra rotations inherent to the paraelectric SrTiO$_3$ layers have attracted much little attention. Here, we highlight a biunivocal relationship between distinct polar topologies -- including $a_1/a_2$ domains, polar vortices, and skyrmio…

Soon polar night. So here's a photo of the aurora Borealis

Generation of strong ultralow-phase-noise microwave fields with tunable ellipticity for ultracold polar molecules
Shrestha Biswas, Sebastian Eppelt, Christian Buchberger, Xing-Yan Chen, Andreas Schindewolf, Michael Hani, Erwin Biebl, Immanuel Bloch, Xin-Yu Luo
https://arxiv.org/abs/2512.03007

Serial Polar Automorphism Ensemble Decoders for Physical Unclonable Functions
Marvin R\"ubenacke, Sebastian Cammerer, Michael Sullivan, Alexander Keller
https://arxiv.org/abs/2510.09220

Serial Polar Automorphism Ensemble Decoders for Physical Unclonable Functions
Physical unclonable functions (PUFs) involve challenging practical applications of error-correcting codes (ECCs), requiring extremely low failure rates on the order of $10^{-6}$ and below despite raw input bit error rates as high as 22%. These requirements call for an efficient ultra-low rate code design. In this work, we propose a novel coding scheme tailored for PUFs based on Polar codes and a low-complexity version of automorphism ensemble decoding (AED). Notably, our serial AED scheme reuse…

🧊 From ANTARCTICA to DONBAS: a Ukrainian POLAR explorer's journey #shorts: https://benborges.xyz/2025/11/13/from-antarctica-to-donbas-a.html

"Antarctic mountains could boost ocean carbon absorption as ice sheets thin"
#Antarctic #Oceans
https://

Antarctic mountains could boost ocean carbon absorption as ice sheets thin
Research led by polar scientists from Northumbria University has revealed new hope in natural environmental systems found in East Antarctica which could help mitigate the overall rise of carbon dioxide in the atmosphere over long timescales.

Passivation-Free Ga-Polar AlGaN/GaN Recessed-Gate HEMTs on Sapphire with 2.8 W/mm POUT and 26.8% PAE at 94 GHz
Ruixin Bai, Swarnav Mukhopadhyay, Michael Elliott, Ryan Gilbert, Jiahao Chen, Rafael A. Choudhury, Kyudong Kim, Yu-Chun Wang, Ahmad E. Islam, Andrew J. Green, Shubhra S. Pasayat, Chirag Gupta
https://arxiv.org/abs/2510.08933

Passivation-Free Ga-Polar AlGaN/GaN Recessed-Gate HEMTs on Sapphire with 2.8 W/mm POUT and 26.8% PAE at 94 GHz
In this work, we demonstrate a passivation-free Ga-polar recessed-gate AlGaN/GaN HEMT on a sapphire substrate for W-band operation, featuring a 5.5 nm Al0.35Ga0.65N barrier under the gate and a 31 nm Al0.35Ga0.65N barrier in the gate access regions. The device achieves a drain current density of 1.8 A/mm, a peak transconductance of 750 mS/mm, and low gate leakage with a high on/off ratio of 10^7. Small-signal characterization reveals a current-gain cutoff frequency of 127 GHz and a maximum osci…

Republicans try to weaken 50-year-old law protecting whales, seals and polar bears (Patrick Whittle/Associated Press)
https://abcnews.go.com/Politics/wireStory/republicans-weaken-50-year-law-protecting-whales-seals-126425918
http://www.memeorandum.com/251011/p30#a251011p30

In-plane polar domains enhanced energy storage
Yu Lei, Xiaoming Shi, Sihan Yan, Qinghua Zhang, Jiecheng Liu, Sixu Wang, Yu Chen, Jiaou Wang, He Qi, Qian Li, Ting Lin, Jingfen Li, Qing Zhu, Haoyu Wang, Jing Chen, Lincong Shu, Linkun Wang, Han Wu, Xianran Xing
https://arxiv.org/abs/2510.11126

In-plane polar domains enhanced energy storage
Relaxor ferroelectric thin films are recognized for their ultrahigh power density, rendering them highly promising for energy storage applications in electrical and electronic systems. However, achieving high energy storage performance with chemically homogeneous, environmentally friendly and compositionally stable materials remains challenging. In this work, we present a design of dielectrics with high energy storage performance via an in-plane polar domains incorporating polar nanoregions mec…

Cristina Mittermeier’s show A Greater Wisdom celebrates the beauty of Earth in stunning photographs
https://www.theguardian.com/artanddesign/gallery/2025/nov/04/cristina-mittermeier-earth-most-spectacular-inhabit…

Me entering the lake for a swim #Uckermark #coldswim

The first elements of the Russian Orbital Station, or ROS, were to launch in 2027
so it would be ready for human habitation in 2028.
Upon completion in the mid-2030s, the station would encompass seven shiny new modules,
potentially including a private habitat for space tourists.
It would be so sophisticated that the station could fly autonomously for months if needed.
Importantly, the Russian station was also to fly in a polar orbit at about 400 km.
Thi…

Russia is about to do the most Russia thing ever with its next space station
“Russia, meanwhile, will be left to carry on the legacy of the ISS, with all its problems.”…

SCIENCE WARRIORS: From Antarctica — STRAIGHT INTO BATTLE! Polar defenders showed their double front: https://benborges.xyz/2025/11/13/science-warriors-from-antarctica-straight.html

Bidifferentials, Lagrangian projections and the Virasoro extension
Eduard Looijenga
https://arxiv.org/abs/2510.08208 https://arxiv.org/pdf/2510.08208

Bidifferentials, Lagrangian projections and the Virasoro extension
Let $C$ be a smooth projective curve over an algebraically closed field $k$ of characteristic zero. We prove that a Lagrangian supplement of $H^0(C, Ω_C)$ in the de Rham cohomology group $H^1_{dR}(C)$ determines and is determined by a particular type of symmetric bidifferential on $C^2$ (its polar divisor must be twice the diagonal and have biresidue one along it). When $k$ is the complex field, a natural choice of such supplement is $H^{0,1}(C)$ and we show that this corresponds with the bidi…

Disorder to Order Transition in 1D Nonreciprocal Cahn-Hilliard Model
Navdeep Rana, Ramin Golestanian
https://arxiv.org/abs/2510.11580 https://arxiv.org/pdf…

Disorder to Order Transition in 1D Nonreciprocal Cahn-Hilliard Model
We extensively study the phenomenology of one dimensional Nonreciprocal Cahn Hilliard model for varying nonreciprocity $(α)$ and different boundary conditions. At small $α$, a perturbed uniform state evolves to a defect laden configuration that lacks global polar order. Defects are the sources and sinks of travelling waves and nonreciprocity selects defects with a unique wave number that increases monotonically with $α_c$. A critical threshold $α_c$ marks the onset of a transition to states…

Multimodal Topological Textures Arising from Coupled Structural Orders in SrTiO$_3$
Fernando G\'omez-Ortiz, Louis Bastogne, Philippe Ghosez
https://arxiv.org/abs/2510.08186 …

Multimodal Topological Textures Arising from Coupled Structural Orders in SrTiO$_3$
Magnetic spin topological textures recently found their electrical counterparts in polar topologies emerging from the condensation of inhomogeneous polar atomic distortions. Here, we further extend the concept to other non-polar atomic degrees of freedom. Taking SrTiO$_3$ as a prototypical example, we investigate from second-principles atomistic simulations, the equilibrium domain structures and topological textures associated with the natural antiferrodistortive rotations of its oxygen octahed…

Intelligent Prediction and Optimization of Open-Hole Wellbore Multiphysics Stability: A Synergistic PINN-DRL Approach
Yu Song, Zehua Song, Jin Yang, Kejin Chen, Kun Jiang, Jizhou Tang
https://arxiv.org/abs/2510.09638

Intelligent Prediction and Optimization of Open-Hole Wellbore Multiphysics Stability: A Synergistic PINN-DRL Approach
To address the dual challenge of predicting multiphysics-induced instability and optimizing drilling fluid parameters for open-hole wellbores under long-term exposure, a high-fidelity system of coupled governing equations was developed. This system integrates seepage, hydration-induced softening, thermal diffusion, and elasto-plastic response to capture the nonlinear dynamics of wellbore stability evolution. A two-dimensional numerical model in a polar coordinate system was established using CO…

Response time of electrons to light in strong-field ionization of polar molecules
Jiayin Che, Sheng Ye, Shiqi Shen, Weiyan Li, Yanjun Chen
https://arxiv.org/abs/2511.12087 https…

Phase-resolved spectroscopic observations of the magnetic cataclysmic binary EF Eridani: Revealing complex magnetic accretion during a high state
Zwidofhela N. Khangale, Stephen B. Potter, David A. H. Buckley, Paul E. Barrett
https://arxiv.org/abs/2510.08266

Phase-resolved spectroscopic observations of the magnetic cataclysmic binary EF Eridani: Revealing complex magnetic accretion during a high state
We present high-resolution, phase-resolved spectroscopic observations of the polar EF Eri, obtained with SALT and the SAAO 1.9-m telescope during its recent emergence from a three-decade-long low state. The average spectrum shows strong emission from the Balmer lines (H$α$ and H$β$) and He~\textsc{ii} 4686 Å, along with weaker emission from the He~\textsc{i} lines and the Bowen fluorescence (C~\textsc{iii}/N~\textsc{iii}) blend at 4650 Å. The emission lines redward of 5500 Å transition to …

🇺🇦 #NowPlaying on BBCRadio3's #Breakfast
Alan Silvestri, Studio Orchestra & Alan Silvestri:
🎵 The Polar Express (Suite)
#AlanSilvestri #StudioOrchestra

Strain-induced multiferroicity in Cr1/3NbS2
Y. Sun, Y. Ahn, D. Sapkota, H. S. Arachchige, R. Xue, S. Mozaffari, D. G. Mandrus, L. Zhao, J. Orenstein, V. Sunko
https://arxiv.org/abs/2510.11619

Strain-induced multiferroicity in Cr1/3NbS2
Multiferroic materials, in which electric polarization and magnetic order coexist and couple, offer rich opportunities for both fundamental discovery and technology. However, multiferroicity remains rare due to conflicting electronic requirements for ferroelectricity and magnetism. One route to circumvent this challenge is to exploit the noncollinear ordering of spin cycloids, whose symmetry permits the emergence of polar order. In this work, we introduce another pathway to multiferroic order i…

Quasiparticle effects and strong excitonic features in exfoliable 1D semiconducting materials
Simone Grillo, Chiara Cignarella, Friedhelm Bechstedt, Paola Gori, Maurizia Palummo, Davide Campi, Nicola Marzari, Olivia Pulci
https://arxiv.org/abs/2510.09194

Quasiparticle effects and strong excitonic features in exfoliable 1D semiconducting materials
We report a comprehensive first-principles study of the electronic and optical properties of recently identified exfoliable one-dimensional semiconducting materials, focusing on chalcogenide-based atomic chains derived from van der Waals-bonded bulk crystals. Specifically, we investigate covalently bonded S3 and Te3 chains, and polar-bonded As2S3 and Bi2Te3 chains, using a fully first-principles approach that combines density-functional theory (DFT), density-functional perturbation theory (DFPT…