Tootfinder

glass: ordered set data structure for client-side order books
Viktor Krapivensky
https://arxiv.org/abs/2506.13991 https://arxiv.org/p…

glass: ordered set data structure for client-side order books
The "ordered set" abstract data type with operations "insert", "erase", "find", "min", "max", "next" and "prev" is ubiquitous in computer science. It is usually implemented with red-black trees, $B$-trees, or $B^+$-trees. We present our implementation of ordered set based on a trie. It only supports integer keys (as opposed to keys of any strict weakly ordered type) and is optimized for market data, namely for what we call sequential locality. The following is the list of what we believe to be …

Congratulations on the retirement of Bill Curry after 13 years as head of the Bermuda Institute of Ocean Sciences, following an already amazing, full career at Wood's Hole Oceanographic Insitution where he was a leader in marine geology, #climate and #carbon cycling research.

Edinburgh's low emission zone seems to be working.
https://road.cc/content/news/ediburghs-lez-results-more-cycling-and-less-car-use-314269

Edinburgh sees “statistically significant” shift towards cycling and walking plus reduced car use following introduction of low emission zone, finds study
Within a year, the LEZ has contributed in improving air quality, with the number of non-compliant vehicles entering the zone also decreasing significantly

A chemical close-up of the main body of the Sagittarius dwarf galaxy
Alessio Liberatori, Deimer Antonio Alvarez Garay, Marco Palla, Alessio Mucciarelli, Michele Bellazzini, Donatella Romano
https://arxiv.org/abs/2506.02476

A chemical close-up of the main body of the Sagittarius dwarf galaxy
We present the chemical composition of a sample of 37 red giant branch (RGB) stars belonging to the main body of the remnant of the Sagittarius (Sgr) dwarf spheroidal galaxy. All stars were observed with the FLAMES-UVES high-resolution spectrograph. Twenty-three new targets are selected along the blue side of the RGB of Sgr, but outside the galaxy stellar nucleus, in order to avoid contamination by the stars of the metal-poor globular cluster M54. Additionally, we re-analyzed archival spectra o…

A highly sensitive SF$_6$-based leak test system for JUNO 3-inch PMT underwater electronics boxes
Ziliang Chu, Diru Wu, Miao He, Jilei Xu, Xiaoping Jing, Jian Wang
https://arxiv.org/abs/2505.24142

A highly sensitive SF$_6$-based leak test system for JUNO 3-inch PMT underwater electronics boxes
A total of 25600 3-inch photomultiplier tubes (PMTs), along with their corresponding frontend electronics, have been installed at the Jiangmen Underground Neutrino Observatory (JUNO). These electronics are housed in 200 stainless steel boxes that operate underwater. To verify the sealing integrity of the underwater boxes following integration, we developed an SF$_6$-based leak test system, opting against the typical helium-based system due to helium's ability to penetrate the PMT glass. After a…

Stellar populations in STARFORGE II: Comparison with observations
Juan P. Farias, Stella S. R. Offner, Ronan Kerr, Michael Y. Grudi\'c
https://arxiv.org/abs/2506.00240

Stellar populations in STARFORGE II: Comparison with observations
Recent studies suggest that most star-forming regions in our Galaxy form stellar associations rather than bound clusters. We analyse models from the STARFORGE simulation suite, a set of magneto-hydrodynamical simulations that include all key stellar feedback and radiative processes following star formation through cloud dispersal. We create synthetic observations by introducing observational biases such as random spurious measurements, unresolved binaries, and photometric sensitivity. These bia…

This https://arxiv.org/abs/2505.20430 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

DESI Emission Line Galaxies: Clustering Dependence one Stellar Mass and [OII] Luminosity
We measure the projected two-point correlation functions of emission line galaxies (ELGs) from the Dark Energy Spectroscopic Instrument (DESI) One-Percent Survey and model their dependence on stellar mass and [OII] luminosity. We select $\sim$180,000 ELGs with redshifts of $0.8 < z < 1.6$ and define 27 samples according to cuts in redshift and both galaxy properties. Following a framework that describes the conditional [OII] luminosity-stellar mass distribution as a function of halo mass, we si…