Tootfinder

Deep learning-derived arterial input function
Junyu Chen, Zirui Jiang, Jennifer M. Coughlin, Martin G. Pomper, Yong Du
https://arxiv.org/abs/2505.24166 htt…

Deep learning-derived arterial input function
Dynamic positron emission tomography (PET) imaging combined with radiotracer kinetic modeling is a powerful technique for visualizing biological processes in the brain, offering valuable insights into brain functions and neurological disorders such as Alzheimer's and Parkinson's diseases. Accurate kinetic modeling relies heavily on the use of a metabolite-corrected arterial input function (AIF), which typically requires invasive and labor-intensive arterial blood sampling. While alternative non…

Replaced article(s) found for stat.ML. https://arxiv.org/list/stat.ML/new
[2/2]:
- Inherited or produced? Inferring protein production kinetics when protein counts are shaped by a ...
Pedro Pessoa, Juan Andres Martinez, Vincent Vandenbroucke, Frank Delvigne, Steve Press\'e

Replaced article(s) found for q-bio.QM. https://arxiv.org/list/q-bio.QM/new
[1/1]:
- Inherited or produced? Inferring protein production kinetics when protein counts are shaped by a ...
Pedro Pessoa, Juan Andres Martinez, Vincent Vandenbroucke, Frank Delvigne, Steve Press\'…

High-precision polarization measurements with Lumped Element Kinetic Inductance Detectors
Sofia Savorgnano, Andrea Catalano, Juan-Francisco Mac\'ias Perez, Julien Bounmy, Olivier Bourrion, Martino Calvo, Olivier Choulet, Gregory Garde, Anne Gerardin, Mile Kusulja, Alessandro Monfardini, Nicolas Ponthieu, Damien Tourres, Francis Vezzu
https://

High-precision polarization measurements with Lumped Element Kinetic Inductance Detectors
This work aims to demonstrate that two arrays of Lumped Element Kinetic Inductance Detectors (LEKIDs), when employed in filled array configuration and separated by an external linear polarizer oriented at 45 degrees, can achieve the precision required by next-generation cosmological experiments. The focus here is on validating their ability to meet stringent uncertainty requirements, in particular for polarization angle reconstruction. To achieve this, the uncertainties in the reconstruction of…

Agreed with what @… said, if
and only if
we view this as the start of a marathon.
We are going to have to do this again, and again, and again, and all kinds of other work beyond it.
https://mstdn.social/@stux/114684095462476087

Niederlande kündigen weitere Militärhilfen an
Die Niederlande wollen weitere Rüstungsgüter an die Ukraine liefern. Verteidigungsminister Ruben Brekelmans kündigte ein neues Unterstützungspaket für die maritime Sicherheit in Höhe von 400 Millionen Euro an. Dazu gehören demnach Patrouillenboote, Transportboote, Abfangjäger, Spezialeinsatzfahrzeuge. Laut Brekelsmann "ein breites Spektrum von mehr als 1…
📹

Ukraine-Kontaktgruppe berät bei Treffen in Brüssel über weitere Militärhilfen
Ukraine-Kontaktgruppe berät bei Treffen in Brüssel über weitere Militärhilfen

Role of hydrogen dynamics and deposition conditions in photochromic YHO/MoO$_3$ bilayer films
Edvards Strods, Martins Zubkins, Viktors Vibornijs, Dmitrii Moldarev, Anatolijs Sarakovskis, Karlis Kundzins, Emija Letko, Daniel Primetzhofer, Juris Purans
https://arxiv.org/abs/2506.16946

Role of hydrogen dynamics and deposition conditions in photochromic YHO/MoO$_3$ bilayer films
Oxygen-containing yttrium hydride (YHO) and molybdenum trioxide (MoO$_3$) bilayer films (YHO/MoO$_3$) are produced using reactive magnetron sputtering, and their photochromic properties are investigated in relation to the thickness and density of the MoO$_3$ layer. Compared to single YHO films, the YHO/MoO$_3$ films exhibit faster coloration and larger contrast, with both parameters adjustable by varying the thickness or deposition pressure of the MoO$_3$ layer. Transparent YHO/MoO$_3$ films (~…

Advanced Langevin thermostats: Properties, extensions to rheology, and a lean momentum-conserving approach
Shubham Agarwal, Sergey V. Sukhomlinov, Marc Honecker, Martin H. M\"user
https://arxiv.org/abs/2506.15579

Advanced Langevin thermostats: Properties, extensions to rheology, and a lean momentum-conserving approach
The Langevin equation accounts for unresolved bath degrees of freedom driving the system toward the bath temperature. Because of this, numerical solutions of the Langevin equation have a long history. Here, we recapitulate, combine, and extend existing Langevin-equation based thermostats, scrutinize their properties and demonstrate their superiority over global kinetic-energy controls. Our work includes compact, asymptotic-analysis based derivations of stochastic thermostats, including the high…

Simulation-trained conditional normalizing flows for likelihood approximation: a case study in stress regulation kinetics in yeast
Pedro Pessoa, Juan Andres Martinez, Vincent Vandenbroucke, Frank Delvigne, Steve Press\'e
https://arxiv.org/abs/2506.09374

Simulation-trained conditional normalizing flows for likelihood approximation: a case study in stress regulation kinetics in yeast
Physics-inspired inference often hinges on the ability to construct a likelihood, or the probability of observing a sequence of data given a model. These likelihoods can be directly maximized for parameter estimation, incorporated into Bayesian frameworks, or even used as loss functions in neural networks. Yet, many models, despite being conceptually simple, lack tractable likelihoods. A notable example arises in estimating protein production from snapshot measurements of actively dividing cell…

The Hamiltonian mechanics of exotic particles
Andrea Amoretti, Daniel K. Brattan, Luca Martinoia
https://arxiv.org/abs/2506.13848 https://

The Hamiltonian mechanics of exotic particles
We develop Hamiltonian mechanics on Aristotelian manifolds, which lack local boost symmetry and admit absolute time and space structures. We construct invariant phase space dynamics, define free Hamiltonians, and establish a generalized Liouville theorem. Conserved quantities are identified via lifted Killing vectors. Extending to kinetic theory, we show that the charge current and stress tensor reproduce ideal hydrodynamics at leading order, with the ideal gas law emerging universally. Our fra…