Tootfinder

T-MPEDNet: Unveiling the Synergy of Transformer-aware Multiscale Progressive Encoder-Decoder Network with Feature Recalibration for Tumor and Liver Segmentation
Chandravardhan Singh Raghaw, Jasmer Singh Sanjotra, Mohammad Zia Ur Rehman, Shubhi Bansal, Shahid Shafi Dar, Nagendra Kumar
https://arxiv.org/abs/2507.19590

T-MPEDNet: Unveiling the Synergy of Transformer-aware Multiscale Progressive Encoder-Decoder Network with Feature Recalibration for Tumor and Liver Segmentation
Precise and automated segmentation of the liver and its tumor within CT scans plays a pivotal role in swift diagnosis and the development of optimal treatment plans for individuals with liver diseases and malignancies. However, automated liver and tumor segmentation faces significant hurdles arising from the inherent heterogeneity of tumors and the diverse visual characteristics of livers across a broad spectrum of patients. Aiming to address these challenges, we present a novel Transformer-awa…

A heterogeneous lithosphere on Venus
I. Romeo, A. Jimenez Diaz, M. Mendiburu Elicabe, I. Egea Gonzalez, R. M. Hahn, P. K. Byrne, J. F. Kirby, J. Alvarez Lozano, J. Ruiz
https://arxiv.org/abs/2506.18568

A heterogeneous lithosphere on Venus
Venus is 95% the size of Earth and probably has a similar composition and internal energy, but the geodynamical mechanism governing its internal thermal evolution remains controversial. Much of the planet surface (77%) is covered by volcanic plains, characterized by basaltic flood lavas, some of which emanate from volcanoes whereas others have no identifiable sources. Here we show that the volcanic plains contain three provinces with statistically different properties. Apart from the plains aro…

The SPACE Program I: The featureless spectrum of HD 86226 c challenges sub-Neptune atmosphere trends
K. Angelique Kahle (Max Planck Institute for Astronomy, Department of Physics and Astronomy, Heidelberg University), Jasmina Blecic (Department of Physics, New York University Abu Dhabi, Center for Astrophysics and Space Science), Reza Ashtari (JHU Applied Physics Laboratory), Laura Kreidberg (Max Planck Institute for Astronomy), Yui Kawashima (Department of Astronomy, Graduate School o…

The SPACE Program I: The featureless spectrum of HD 86226 c challenges sub-Neptune atmosphere trends
Sub-Neptune exoplanets are the most abundant type of planet known today. As they do not have a Solar System counterpart, many open questions exist about their composition and formation. Previous spectroscopic studies rule out aerosol-free hydrogen-helium-dominated atmospheres for many characterized sub-Neptunes but are inconclusive about their exact atmospheric compositions. Here we characterize the hot (Teq=1311K) sub-Neptune HD 86226 c, which orbits its G-type host star. Its high equilibrium …

Running cars on E-Fuels, made with CO2 from the air and green Hydrogen?🚗⛽🌿⚡
E-Fuels, so the story goes, could allow using existing cars and infrastructure like gas stations. However, E-Fuels are extremely inefficient.
In 2022, Siemens Energy, Porsche, and the Chilean company HIF inaugurated the Haru Oni pilot plant in Chile's windy Magallanes region, which turns CO2 and Hydrogen into Methanol and small amounts of Gasoline. How's it going? 🧵

What's up with the Production of E-Fuels in Chile?
In 2022, Siemens Energy, Porsche, and HIF inaugurated a pilot plant for the production of E-Methanol and E-Gasoline in southern Chile. The Haru Oni plant was intended to be just the beginning — with plans for large-scale production just a few years later. However, it does not look like that will ever happen.

Revisiting the configurations of hydrogen impurities in SrTiO3: Insights from first-principles local vibration mode calculations
Cai Zenghua, Ma Chunlan
https://arxiv.org/abs/2507.05752

Revisiting the configurations of hydrogen impurities in SrTiO3: Insights from first-principles local vibration mode calculations
The specific configurations of hydrogen impurities in SrTiO3 (STO) are still ambiguous. In this study, we systematically investigate the configurations and vibrational properties of hy-drogen impurities in cubic STO using first-principles local vibration mode calculations. Em-ploying the appropriate hybrid exchange correlation functional with the fraction of exact ex-change setting to 0.2, we revisit the interstitial hydrogen (Hi), Hi complexes (2Hi), and various intrinsic cation vacancy comple…

A Mean Field Game for Capacity Expansion Modeling
Emma Hubert, Dimitrios Lolas, Ronnie Sircar
https://arxiv.org/abs/2507.10604 https://

A Mean Field Game for Capacity Expansion Modeling
This paper studies the optimal investment behavior of renewable electricity producers in a competitive market, where both prices and installation costs are influenced by aggregate industry activity. We model the resulting crowding effects using a mean field game framework, capturing the strategic interactions among a continuum of heterogeneous producers. The equilibrium dynamics are characterized via a coupled system of Hamilton-Jacobi-Bellman and Fokker-Planck equations, which describe the val…

Blue Stragglers prefer peaceful environments because binaries do the same
Francesco R. Ferraro, Barbara Lanzoni, Enrico Vesperini, Emanuele Dalessandro, Mario Cadelano, Cristina Pallanca, Giacomo Beccari, Domenico Nardiello, Mattia Libralato, Giampaolo Piotto
https://arxiv.org/abs/2506.07692…

Blue Stragglers prefer peaceful environments because binaries do the same
Blue straggler stars (BSSs) are core hydrogen-burning stars routinely observed in resolved stellar systems. According to the theory of single star evolution they should not exist because, due to their large mass, they should have already evolved to stellar remnants. Hence, they are suspected to be the result of mass-enhancement processes, like mass-transfer activity in binary systems, mergers in binary or higher order systems, or direct stellar collisions, possibly mediated by dynamical interac…

scSiameseClu: A Siamese Clustering Framework for Interpreting single-cell RNA Sequencing Data
Ping Xu, Zhiyuan Ning, Pengjiang Li, Wenhao Liu, Pengyang Wang, Jiaxu Cui, Yuanchun Zhou, Pengfei Wang
https://arxiv.org/abs/2505.12626

scSiameseClu: A Siamese Clustering Framework for Interpreting single-cell RNA Sequencing Data
Single-cell RNA sequencing (scRNA-seq) reveals cell heterogeneity, with cell clustering playing a key role in identifying cell types and marker genes. Recent advances, especially graph neural networks (GNNs)-based methods, have significantly improved clustering performance. However, the analysis of scRNA-seq data remains challenging due to noise, sparsity, and high dimensionality. Compounding these challenges, GNNs often suffer from over-smoothing, limiting their ability to capture complex biol…

Policy Optimization for Continuous-time Linear-Quadratic Graphon Mean Field Games
Philipp Plank, Yufei Zhang
https://arxiv.org/abs/2506.05894 https://

Policy Optimization for Continuous-time Linear-Quadratic Graphon Mean Field Games
Multi-agent reinforcement learning, despite its popularity and empirical success, faces significant scalability challenges in large-population dynamic games. Graphon mean field games (GMFGs) offer a principled framework for approximating such games while capturing heterogeneity among players. In this paper, we propose and analyze a policy optimization framework for continuous-time, finite-horizon linear-quadratic GMFGs. Exploiting the structural properties of GMFGs, we design an efficient polic…

Topology, Kinetics and Inheritance in Clonal Colonies of Bone Marrow Stromal Cells
Alessandro Allegrezza, Riccardo Beschi, Domenico Caudo, Andrea Cavagna, Alessandro Corsi, Antonio Culla, Samantha Donsante, Giuseppe Giannicola, Irene Giardina, Giorgio Gosti, Tomas S. Grigera, Stefania Melillo, Biagio Palmisano, Leonardo Parisi, Lorena Postiglione, Mara Riminucci, Francesco Saverio Rotondi

Topology, Kinetics and Inheritance in Clonal Colonies of Bone Marrow Stromal Cells
Bone marrow stromal cells (BMSCs), whose populations contain multipotent skeletal stem cells with relevant therapeutic applications, are known to produce very heterogeneous colonies upon in vitro culture, a trait that may severely hinder the clinical usefulness of BMSC-based therapies. Therefore, reaching a better insight on the nature of such heterogeneity, as well as on the factors determining it, is important. Here, by using time-lapse microscopy, we study the structure of N=28 human BMSC co…