Tootfinder

A Tale of Two Monopolies
Yi-Chun Chen, Zhengqing Gui
https://arxiv.org/abs/2506.06763 https://arxiv.org/pdf/2506.06763

A Tale of Two Monopolies
We apply marginal analysis à la Bulow and Roberts (1989) to characterize the revenue-maximizing selling mechanism for a multiproduct monopoly. Specifically, we derive the revenue change due to a price perturbation on any subset of bundles holding the prices of other bundles fixed. In an optimal mechanism, total revenue must not increase with any small price change for bundles with positive demand, nor with a small price decrease for bundles with zero demand. For any symmetric two-dimensional t…

The Growing Impact of Unintended Starlink Broadband Emission on Radio Astronomy in the SKA-Low Frequency Range
Dylan Grigg, Steven Tingay, Marcin Sokolowski
#toXiv_bot_toot

This https://arxiv.org/abs/2505.21714 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Time-tagging data acquisition system for testing superconducting electronics based on an RFSoC and custom analog frontend
Novel electronic devices can often be operated in a plethora of ways, which makes testing circuits comprised of them difficult. Often, no single tool can simultaneously analyze the operating margins, maximum speed, and failure modes of a circuit, particularly when the intended behavior of subcomponents of the circuit is not standardized. This work demonstrates a cost-effective data acquisition system for electronic circuits that enables more intricate verification techniques than are practical …

Evaluating the impact of the L3 cache size of AMD EPYC CPUs on the performance of CFD applications
Marcin Lawenda, {\L}ukasz Szustak, L\'aszl\'o K\"ornyei, Flavio Cesar Cunha Galeazzo, Pawe{\l} Bratek
https://arxiv.org/abs/2505.17934

Evaluating the impact of the L3 cache size of AMD EPYC CPUs on the performance of CFD applications
In this work, the authors focus on assessing the impact of the AMD EPYC processor architecture on the performance of CFD applications. Several generations of architectures were analyzed, such as Rome, Milan, Milan X, Genoa, Genoa X and Bergamo, characterized by a different number of cores (64-128), L3 cache size (256 - 1152 MB) and RAM type (8-channel DDR4 or 12-channel DDR5). The research was conducted based on the OpenFOAM application using two memory-bound models: motorBike and Urban Air Pol…

Time-tagging data acquisition system for testing superconducting electronics based on an RFSoC and custom analog frontend
Reed A. Foster, Stephen Kandeh, Owen Medeiros, Alejandro Simon, Matteo Castellani, Karl K. Berggren
https://arxiv.org/abs/2505.21714

Time-tagging data acquisition system for testing superconducting electronics based on an RFSoC and custom analog frontend
Novel electronic devices can often be operated in a plethora of ways, which makes testing circuits comprised of them difficult. Often, no single tool can simultaneously analyze the operating margins, maximum speed, and failure modes of a circuit, particularly when the intended behavior of subcomponents of the circuit is not standardized. This work demonstrates a cost-effective data acquisition system for electronic circuits that enables more intricate verification techniques than are practical …