Tootfinder

Towards localized accuracy assessment of remote-sensing derived built-up land layers across the rural-urban continuum
Johannes H. Uhl, Stefan Leyk
https://arxiv.org/abs/2403.00166

Towards localized accuracy assessment of remote-sensing derived built-up land layers across the rural-urban continuum
The accuracy assessment of remote-sensing derived built-up land data represents a specific case of binary map comparison, where class imbalance varies considerably across rural-urban trajectories. Thus, local accuracy characterization of such datasets requires specific strategies that are robust to low sample sizes and different levels of class imbalance. Herein, we examine the suitability of commonly used spatial agreement measures for their localized accuracy characterization of built-up land…

On the Ambipolar Diffusion Formulation for Ion-neutral drifts in the non-negligible drift velocity limit
Andrew Hillier
https://arxiv.org/abs/2403.16847 ht…

On the Ambipolar Diffusion Formulation for Ion-neutral drifts in the non-negligible drift velocity limit
The ambipolar diffusion approximation is used to model partially ionised plasma dynamics in a single fluid setting. To correctly apply the commonly used version of ambipolar diffusion, a set of criteria should be satisfied including the requirement that the difference in velocity between charges and neutral species (known as drift velocity) is much smaller than the thermal velocity, otherwise the drift velocity will drive a non-negligible level of further collisions between the two species. In …

Cowboys' realistic third-round draft target compared to former All-Pro RB DeMarco Murray https://www.yardbarker.com/nfl/articles/cowboys_realistic_third_round_draft_target_compared_to_f…

Cowboys' realistic third-round draft target compared to former All-Pro RB DeMarco Murray
It's no secret the Dallas Cowboys will be looking into adding a running back in Day 2 of the 2024 NFL Draft. It's a strong class for those early rounds and the temptation will be too high to ignore. Although Jonathon Brooks is the most commonly mocked running back to Dallas, it's Trey Benson who most resembles a former Cowboys running back: DeMarco Murray. Benson is A to Z Sports Film Room analyst James Foster's top running back in this year's class and his 65th best overall prospect and he lis…

This https://arxiv.org/abs/2403.01261 has been replaced.
link: https://scholar.google.com/scholar?q=a

GSL-LPA: Fast Label Propagation Algorithm (LPA) for Community Detection with no Internally-Disconnected Communities
Community detection is the problem of identifying tightly connected clusters of nodes within a network. Efficient parallel algorithms for this play a crucial role in various applications, especially as datasets expand to significant sizes. The Label Propagation Algorithm (LPA) is commonly employed for this purpose due to its ease of parallelization, rapid execution, and scalability. However, it may yield internally disconnected communities. This technical report introduces GSL-LPA, derived from…

Weekend #Plankton #Factoid 🦐🦠
In marine systems where high nutrients lead to #hypoxia (low oxygen), it is commonly thought animals must avoid these zones - wrongly. Many types of

Bayesian distances for quantifying tensions in cosmological inference and the surprise statistic
Benedikt Schosser, Pedro Riba Mello, Miguel Quartin, Bjoern Malte Schaefer
https://arxiv.org/abs/2402.19100

Bayesian distances for quantifying tensions in cosmological inference and the surprise statistic
Tensions between cosmological parameters derived through different channels can be a genuine signature of new physics that $Λ$CDM as the standard model is not able to reproduce, in particular in the missing consistency between parameter estimates from measurements the early and late Universe. Or, they could be caused by yet to be understood systematics in the measurements as a more mundane explanation. Commonly, cosmological tensions are stated in terms of mismatches of the posterior parameter…

Derivative-Free iterative One-Step Reconstruction for Multispectral CT
Thomas Prohaszka, Lukas Neumann, Markus Haltmeier
https://arxiv.org/abs/2402.12250 h…

Derivative-Free iterative One-Step Reconstruction for Multispectral CT
Image reconstruction in Multispectral Computed Tomography (MSCT) requires solving a challenging nonlinear inverse problem, commonly tackled via iterative optimization algorithms. Existing methods necessitate computing the derivative of the forward map and potentially its regularized inverse. In this work, we present a simple yet highly effective algorithm for MSCT image reconstruction, utilizing iterative update mechanisms that leverage the full forward model in the forward step and a derivativ…

This https://arxiv.org/abs/2308.05310 has been replaced.
initial toot: https://mastoxiv.page/@a…

Self-consistent convolutional density functional approximations: Application to adsorption at metal surfaces
The exchange-correlation (XC) functional in density functional theory is used to approximate multi-electron interactions. A plethora of different functionals is available, but nearly all are based on the hierarchy of inputs commonly referred to as "Jacob's ladder." This paper introduces an approach to construct XC functionals with inputs from convolutions of arbitrary kernels with the electron density, providing a route to move beyond Jacob's ladder. We derive the variational derivative of thes…

Statistical relations between spectropolarimetric observables and the polar strength of the stellar dipolar magnetic field
O. Kochukhov
https://arxiv.org/abs/2404.17517

Statistical relations between spectropolarimetric observables and the polar strength of the stellar dipolar magnetic field
Global magnetic fields of early-type stars are commonly characterised by the mean longitudinal magnetic field $\langle B_{\rm z} \rangle$ and the mean field modulus $\langle B \rangle$, derived from the circular polarisation and intensity spectra, respectively. Observational studies often report a root mean square (rms) of $\langle B_{\rm z} \rangle$ and an average value of $\langle B \rangle$. In this work, I used numerical simulations to establish statistical relationships between these cumul…

This https://arxiv.org/abs/2308.05310 has been replaced.
initial toot: https://mastoxiv.page/@a…

Self-consistent convolutional density functional approximations: Application to adsorption at metal surfaces
The exchange-correlation (XC) functional in density functional theory is used to approximate multi-electron interactions. A plethora of different functionals is available, but nearly all are based on the hierarchy of inputs commonly referred to as "Jacob's ladder." This paper introduces an approach to construct XC functionals with inputs from convolutions of arbitrary kernels with the electron density, providing a route to move beyond Jacob's ladder. We derive the variational derivative of thes…