Tootfinder

AC Magnetometry Loop Tracer Compatible with Magnetic Calorimetry for Power Loss Analysis
Thomas Veile, Michael Harmel, Mathias Zambach, Philip Holm, Frederik L. Durhuus, Cathrine Frandsen
https://arxiv.org/abs/2508.07929

AC Magnetometry Loop Tracer Compatible with Magnetic Calorimetry for Power Loss Analysis
Magnetic nanoparticles (MNPs) have garnered significant attention for various applications in the high-kHz-to-MHz range, although their magnetic characterization at these operational conditions has been limited. However, a number of recent studies have showcased high-frequency and high-field amplitude AC magnetometry loop tracers capable of retrieving the magnetic AC hysteresis curve and the associated magnetic properties. In this paper, we present an easily constructable loop tracer that is re…

This https://arxiv.org/abs/2504.11284 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csLG_…

Bipartite Ranking From Multiple Labels: On Loss Versus Label Aggregation
Bipartite ranking is a fundamental supervised learning problem, with the goal of learning a ranking over instances with maximal Area Under the ROC Curve (AUC) against a single binary target label. However, one may often observe multiple binary target labels, e.g., from distinct human annotators. How can one synthesize such labels into a single coherent ranking? In this work, we formally analyze two approaches to this problem -- loss aggregation and label aggregation -- by characterizing their B…

Here's an odd effect (stumbled on by accident). The blue loss curve is from a well-tuned BERT baseline (from the "cramming"paper).
The only thing I changed for the orange is to put a residual connection around each transformer block and to multiply the output of the block by a scalar parameter initialized to 0.
I'm surprised that has such a substantial impact. Not just on the performance, but on the shape of the loss curve.

Weight loss curve looking good so far 🏋️‍♂️

First EM simulations on the switch logic board after sorting out some licensing issues with the new Sonnet version.
V19 is a lot faster than v18, it doubles the thread cap from 8 to 16 and also replaces the legacy SSE based matrix solver with an AVX-based version (geee, i wonder where they might have got that from...).
First test is the BGA launch for LC0_PHY0_LANE1_TX, a 5 Gbps QSGMII link but also representative of some of the 25G SERDES.
Return loss is better than -13 dB…

Diversity in Hydrogen-rich Envelope Mass of Type II Supernovae. (III). The mass-loss and evolutionary pathways of the red supergiant progenitors
Qiliang Fang, Takashi J. Moriya, Keiichi Maeda, Andris Dorozsmai, Javier Silva-Farf\'an
https://arxiv.org/abs/2507.14665

Diversity in Hydrogen-rich Envelope Mass of Type II Supernovae. (III). The mass-loss and evolutionary pathways of the red supergiant progenitors
We present a comprehensive analysis of 32 type II supernovae (SNe II) with plateau phase photometry and late phase ($nebular$) spectroscopy available, aiming to bridge the gap between the surface and core of their red supergiant (RSG) progenitors. Using \texttt{MESA}\,+\texttt{STELLA}, we compute an extensive grid of SN II light curve models originating from RSG with effective temperatures $T_{\rm eff}$ around 3650\,K and hydrogen-rich envelopes artificially stripped to varying degrees. These m…