Tootfinder

Monsters are very real.
But they never emerge in a vacuum.
This piece by @… is nearly perfect in explaining why.
https://pluralistic.net/2025/07/19/sys

Smart fault detection in satellite electrical power system
Niloofar Nobahari, Alireza Rezaee
https://arxiv.org/abs/2507.14004 https://

Smart fault detection in satellite electrical power system
This paper presents an new approach for detecting in the electrical power system of satellites operating in Low Earth Orbit (LEO) without an Attitude Determination and Control Subsystem (ADCS). Components of these systems are prone to faults, such as line-to-line faults in the photovoltaic subsystem, open circuits, and short circuits in the DC-to-DC converter, as well as ground faults in batteries. In the previous research has largely focused on detecting faults in each components, such as phot…

Generative Lagrangian data assimilation for ocean dynamics under extreme sparsity
Niloofar Asefi, Leonard Lupin-Jimenez, Tianning Wu, Ruoying He, Ashesh Chattopadhyay
https://arxiv.org/abs/2507.06479

Generative Lagrangian data assimilation for ocean dynamics under extreme sparsity
Reconstructing ocean dynamics from observational data is fundamentally limited by the sparse, irregular, and Lagrangian nature of spatial sampling, particularly in subsurface and remote regions. This sparsity poses significant challenges for forecasting key phenomena such as eddy shedding and rogue waves. Traditional data assimilation methods and deep learning models often struggle to recover mesoscale turbulence under such constraints. We leverage a deep learning framework that combines neural…

Reliability-Based Fault Analysis and Modeling of Satellite Electrical Power Subsystems Using Fault Tree and Simulation Tools
Niloofar Nobahari, Alireza Rezaee
https://arxiv.org/abs/2507.15708

Reliability-Based Fault Analysis and Modeling of Satellite Electrical Power Subsystems Using Fault Tree and Simulation Tools
One of the most important satellite subsystems is its electric power subsystem. The occurrence of a fault in the satellite power system causes the failure of all or part of the satellite. Calculating the overall reliability of the power system before the mission is crucial in improving the design of the satellite power system. Each component of the power system may malfunction due to pressure, launch pressure, and operating conditions. Accordingly, in this paper, first, a healthy and faulty sys…

Algebraic and Spectral properties of slant Toeplitz and slant little Hankel Operators on weighted Bergman Space
Oinam Nilbir Singh, M. P. Singh, Thokchom Sonamani Singh
https://arxiv.org/abs/2507.06546

Algebraic and Spectral properties of slant Toeplitz and slant little Hankel Operators on weighted Bergman Space
This paper studies the \(k^{th}-\)order slant Toeplitz and slant little Hankel operators on the weighted Bergman space \(\mathcal{A}_α^2(\mathbb{D})\). These operators are constructed using a slant shift operator \(W_k\) composed with classical Toeplitz and Hankel operators, respectively. We derive their matrix representations and establish criteria for boundedness, compactness, and normality. Commutativity conditions are obtained, showing that two such operators commute if and only if their s…