Tootfinder

Difference in Neoclassical Edge Flows Between Strongly Negative and Positive Triangularities in the XGC Gyrokinetic Simulation
S. Ku, C. S. Chang, R. Hager, L. W. Schmitz, A. O. Nelson
https://arxiv.org/abs/2510.05287

Difference in Neoclassical Edge Flows Between Strongly Negative and Positive Triangularities in the XGC Gyrokinetic Simulation
The neoclassical baseline study of a strongly negative triangularity (NT) plasma and the corresponding positive triangularity plasma is performed using the edge-specialized, total-f gyrokinetic code XGC. A DIII-D-like plasma is used, based on the negative triangularity discharge of DIII-D \#193793. An artificial positive triangularity (PT) equilibrium has been constructed to compare the edge rotation physics at the same triangularity strength, but with opposite sign, while keeping the same elon…

A Quantum Algorithm for Nonlinear Electromagnetic Fluid Dynamics via Koopman-von Neumann Linearization
Hayato Higuchi, Yuki Ito, Kazuki Sakamoto, Keisuke Fujii, Akimasa Yoshikawa
https://arxiv.org/abs/2509.22503

A Quantum Algorithm for Nonlinear Electromagnetic Fluid Dynamics via Koopman-von Neumann Linearization
To simulate plasma phenomena, large-scale computational resources have been employed in developing high-precision and high-resolution plasma simulations. One of the main obstacles in plasma simulations is the requirement of computational resources that scale polynomially with the number of spatial grids, which poses a significant challenge for large-scale modeling. To address this issue, this study presents a quantum algorithm for simulating the nonlinear electromagnetic fluid dynamics that gov…

Stability and optical quality of liquid crystal films as high repetition rate plasma mirrors in staged laser-plasma accelerators
A. Vazquez, A. Jewell, M. Cole, A. Abdi, T. K. Le, A. McIlvenny, N. Czapla, A. J. Gonsalves, K. Nakamura, D. W. Schumacher, Z. Eisentraut, C. B. Schroeder, J. van Tilborg, J. Osterhoff, E. Esarey, L. Obst-Huebl
https://

Stability and optical quality of liquid crystal films as high repetition rate plasma mirrors in staged laser-plasma accelerators
Staging multiple laser-plasma accelerators (LPAs), each driven by its own laser pulse, is a promising technique for reaching higher particle energies than achievable in a single LPA. However, introducing subsequent laser pulses for post-acceleration in staged LPA geometries presents a significant challenge for conventional optics. Due to the focused, high-intensity nature of the laser beam interacting with the electron beam, the fluence on the coupling mirror surpasses the damage threshold of a…

Estimating Respiratory Effort from Nocturnal Breathing Sounds for Obstructive Sleep Apnoea Screening
Xiaolei Xu, Chaoyue Niu, Guy J. Brown, Hector Romero, Ning Ma
https://arxiv.org/abs/2509.14944

Estimating Respiratory Effort from Nocturnal Breathing Sounds for Obstructive Sleep Apnoea Screening
Obstructive sleep apnoea (OSA) is a prevalent condition with significant health consequences, yet many patients remain undiagnosed due to the complexity and cost of over-night polysomnography. Acoustic-based screening provides a scalable alternative, yet performance is limited by environmental noise and the lack of physiological context. Respiratory effort is a key signal used in clinical scoring of OSA events, but current approaches require additional contact sensors that reduce scalability an…

Pose Estimation of a Cable-Driven Serpentine Manipulator Utilizing Intrinsic Dynamics via Physical Reservoir Computing
Kazutoshi Tanaka, Tomoya Takahashi, Masashi Hamaya
https://arxiv.org/abs/2509.17308

Pose Estimation of a Cable-Driven Serpentine Manipulator Utilizing Intrinsic Dynamics via Physical Reservoir Computing
Cable-driven serpentine manipulators hold great potential in unstructured environments, offering obstacle avoidance, multi-directional force application, and a lightweight design. By placing all motors and sensors at the base and employing plastic links, we can further reduce the arm's weight. To demonstrate this concept, we developed a 9-degree-of-freedom cable-driven serpentine manipulator with an arm length of 545 mm and a total mass of only 308 g. However, this design introduces flexibility…

Wireless Communication Performance Testing: From Laboratory Environment to Research Vessel
Andrei-Raoul Morariu, Andreas Strandberg, Bogdan Iancu, Jerker Bjorkqvist
https://arxiv.org/abs/2509.14740

Wireless Communication Performance Testing: From Laboratory Environment to Research Vessel
This study investigates signal transmission within a shared spectrum, focusing on measurements conducted both in laboratory and outdoor environments. The objective was to demonstrate how laboratory objects obstructing the line of sight can attenuate the signal between a transmitter (Tx) and a receiver (Rx). Additionally, we examined the impact of distance and placement in various locations aboard an electric research boat on signal transmission efficiency. These findings contribute to understan…

Transfer Learning for Paediatric Sleep Apnoea Detection Using Physiology-Guided Acoustic Models
Chaoyue Niu, Veronica Rowe, Guy J. Brown, Heather Elphick, Heather Kenyon, Lowri Thomas, Sam Johnson, Ning Ma
https://arxiv.org/abs/2509.15008

Transfer Learning for Paediatric Sleep Apnoea Detection Using Physiology-Guided Acoustic Models
Paediatric obstructive sleep apnoea (OSA) is clinically significant yet difficult to diagnose, as children poorly tolerate sensor-based polysomnography. Acoustic monitoring provides a non-invasive alternative for home-based OSA screening, but limited paediatric data hinders the development of robust deep learning approaches. This paper proposes a transfer learning framework that adapts acoustic models pretrained on adult sleep data to paediatric OSA detection, incorporating SpO2-based desaturat…