Tootfinder

Another covid erasure rant
Also from conversations at the dentist: staff don't test themselves regularly any more, but they do if they have respiratory symptoms!
There's a giant list of possible covid symptoms besides those! Like headache for example! Are we in a timewarp back to spring 2020?
It's really up in my face right now how weird the world is nowadays. No longer medical professionals' jobs to know even the basic facts necessary for infection control.
#CovidErasure #covid

ADS' favorite chicken--Mo, aka Cuddle Chmkn-- passed away yesterday evening, too. He was holding her in his lap when she finally left her little body. We cried together on the phone for a long time last night. & then he made a hilarious but OMG SO DARK joke about having to put the chicken in the fridge, & well, I'm just gonna say that he may look like his father, but that kid is ALL ME on the inside. 💀 😏 💀

In her role as Minister of Finance, to which she was appointed in August, 2020, the Deputy Prime Minister has supported the Canadian economy’s strong recovery from the pandemic recession, led the introduction of Canada’s first national system of affordable early learning and child care, and returned Canada’s finances to a sustainable footing after the winding-down of emergency pandemic spending.

https://www.pm.gc.ca/en/cabinet/honourable-chrystia-freeland

The corona of a fully convective star with a near-polar flare
Ekaterina Ilin, Katja Poppenh\"ager, Beate Stelzer, Desmond Dsouza
https://arxiv.org/abs/2405.05580

The corona of a fully convective star with a near-polar flare
In 2020, the Transiting Exoplanet Survey Satellite (TESS) observed a rapidly rotating M7 dwarf, TIC 277539431, produce a flare at 81° latitude, the highest latitude flare located to date. This is in stark contrast to solar flares that occur much closer to the equator, typically below 30°. The mechanisms that allow flares at high latitudes to occur are poorly understood. We studied five Sectors of TESS monitoring, and obtained 36 ks of XMM-Newton observations to investigate the coronal and fla…

Globally, March 2024 was:
• 0.73°C warmer than the 1991-2020 average for March
• the warmest March on record, 0.10°C warmer than March 2016, the previous warmest March
• 1.68°C warmer than an estimate of the pre-industrial average for 1850-1900
https://climate.copernicus.eu/surf…

This https://arxiv.org/abs/2209.13383 has been replaced.
link: https://scholar.google.com/scholar?q=a

Signatures of quantum geometry from exponential corrections to the black hole entropy
It has been recently shown in [Phys. Rev. Lett. 125 (2020) 041302] that microstate counting carried out for quantum states residing on the horizon of a black hole leads to a correction of the form $\exp(-A/4l_p^2)$ in the Bekenstein-Hawking form of the black hole entropy. In this paper, we develop a novel approach to obtain the possible form of the spacetime geometry from the entropy of the black hole for a given horizon radius. The uniqueness of this solution for a given energy-momentum tensor…

2020
"16"
#ambient

You guys know I'm not at all religious, but I still love this Barsotti cartoon w/ all my heart--it's one of my all-time faves. I hope the universe will let me reunite with my doggos in one way or another. I just hope we all get to be together again someday. #DogsOfMastodon

Special counsel urges Supreme Court to reject Trump’s immunity claim

Special counsel Jack Smith on Monday urged the Supreme Court to reject Donald Trump’s “novel and sweeping” claim that he is immune from criminal prosecution on charges of conspiring to overturn the results of the 2020 presidential election.

“The President’s constitutional duty to take care that the laws be faithfully executed does not entail a general right to violate them,” Smith said in his office’s main brie…

Special counsel urges Supreme Court to reject Trump’s immunity claim
A president’s “constitutional duty to take care that the laws be faithfully executed does not entail a general right to violate them,” Jack Smith writes in his office’s brief.

Magnetic fields beneath active region coronal loops
Philip Judge, Lucia Kleint, Christoph Kuckein
https://arxiv.org/abs/2405.05391 https://

Magnetic fields beneath active region coronal loops
We examine the hypothesis that multipolar magnetic fields advected by photospheric granules can contribute heating to the active chromosphere and corona. On 28 September 2020 the GRIS and HiFI+ instruments at the GREGOR telescope obtained data of NOAA 12773. We analyze Stokes profiles of spectral lines of Si I and He I, to study magnetic fields from photosphere to the upper chromosphere. Magnetogram and EUV data from the HMI and AIA instruments on the SDO spacecraft are co-aligned and studied i…

Thank you so much for all the kind words & love--I'm appreciating it more than you know.
We let all the dogs say goodbye to her last night & then put her in the fridge until this morning. Mr. Boots dug her grave this morning & now she's next to Tibby under the mesquite tree out back.
She had a long, happy life, & she was so loved. She's still loved. She always will be. ❤️ ❤️ ❤️

On the ergodicity breaking in well-behaved Generalized Langevin Equations
Giuseppe Procopio, Chiara Pezzotti, Massimiliano Giona
https://arxiv.org/abs/2403.05437

On the ergodicity breaking in well-behaved Generalized Langevin Equations
The phenomenon of ergodicity breaking of stochastic dynamics governed by Generalized Langevin Equations (GLE) in the presence of well-behaved exponentially decaying dissipative memory kernels, recently investigated by many authors (Phys. Rev. E {\bf 83} 062102 2011; Phys. Rev. E {\bf 98} 062140 2018; Eur. Phys. J. B {\bf 93} 184 2020), finds, in the dynamic theory of GLE, its simple and natural explanation, related to the concept of dissipative stability. It is shown that the occurrence of er…

Desde junio de 2020, dedico una hora a la semana para conectar con desconocidos. Ya he tenido el placer de charlar con mšs de 80 personas con las que he charlado sobre datos, carrera laboral, formación, frustraciones, proyectos personales o management. Comparte o apúntate 👉 https://www.pelayoarbues.com/notes/Office-<…

"Minneapolis police officers reprimanded for misconduct in aftermath of George Floyd's murder"
(gift link)
#policemisconduct

Minneapolis officers reprimanded for misconduct in 2020 after George Floyd’s murder
Newly published discipline reports reveal that former police chiefs moved to terminate two officers for excessive force and suspended others for failing to uphold department policy.

HISTORY WILL JUDGE THE COMPLICIT
Why have Republican leaders abandoned their principles in support of an immoral and dangerous president?
By Anne Applebaum
https://www.theatlantic.com/magazine/archive/2020/07/trumps-collaborators/61225…

I rode my #bike today for the first time this year. Well, I tried to ride three weeks ago, the last time it was 18 degrees Celsius, but I had to abort then because my electronic shifters had no charge. But today I rode. It felt good. (I had to pump up the tire again. I need to get a new tube.) Also, April 5th is the same day I got back into bicycling in 2020 and was able to combine it with calisthe…

A look at Apple's iPhone recycling, including shredding robots, and contractor GEEP, which Apple sued in 2020 for $22.6M in a case that has since been inactive (Austin Carr/Bloomberg)
https://www.bloomberg.com/news/features/2024-04…

Apple iPhone Recycling Program Has Secrets
Apple touts its network of shredding robots and contractors as a greener way to reuse old gadgets. A lengthy court battle and a Businessweek investigation have cast some light on the recycling industry’s dirty secrets.

Parks Associates: US households with internet now consume an average 43.5 hours of video per week across all viewing devices, up from 37.2 hours in 2020 (James Careless/TV Tech)
https://www.tvtechnology.com/news/video-viewing-rises-sig…

Video Viewing Rises Significantly in U.S. Internet Households
Those homes are now watching six more hours of video per week than they were in 2020

Data Feminism for AI
Lauren Klein, Catherine D'Ignazio
https://arxiv.org/abs/2405.01286 https://arxiv.org/pdf/2405.01286

Data Feminism for AI
This paper presents a set of intersectional feminist principles for conducting equitable, ethical, and sustainable AI research. In Data Feminism (2020), we offered seven principles for examining and challenging unequal power in data science. Here, we present a rationale for why feminism remains deeply relevant for AI research, rearticulate the original principles of data feminism with respect to AI, and introduce two potential new principles related to environmental impact and consent. Together…

SPIRou spectropolarimetry of the T Tauri star TW Hydrae: magnetic fields, accretion and planets
J. -F. Donati, P. I. Cristofari, L. T. Lehmann, C. Moutou, S. H. P. Alencar, J. Bouvier, L. Arnold, X. Delfosse, E. Artigau, N. Cook, \'A. K\'osp\'al, F. M\'enard, C. Baruteau, M. Takami, S. Cabrit, G. H\'ebrard, R. Doyon, the SPIRou science team

SPIRou spectropolarimetry of the T Tauri star TW Hydrae: magnetic fields, accretion and planets
In this paper we report near-infrared observations of the classical T Tauri star TW Hya with the SPIRou high-resolution spectropolarimeter and velocimeter at the 3.6-m Canada-France-Hawaii Telescope in 2019, 2020, 2021 and 2022. By applying Least-Squares Deconvolution (LSD) to our circularly polarized spectra, we derived longitudinal fields that vary from year to year from -200 to +100 G, and exhibit low-level modulation on the 3.6 d rotation period of TW Hya, despite the star being viewed almo…

Upgrade of NaI(Tl) crystal encapsulation for the NEON experiment
J. J. Choi, E. J. Jeon, J. Y. Kim, K. W. Kim, S. H. Kim, S. K. Kim, Y. D. Kim, Y. J. Ko, B. C. Koh, C. Ha, B. J. Park, S. H. Lee, I. S. Lee, H. Lee, H. S. Lee, J. Lee, Y. M. Oh
https://arxiv.org/abs/2404.03691

Upgrade of NaI(Tl) crystal encapsulation for the NEON experiment
The Neutrino Elastic-scattering Observation with NaI(Tl) experiment (NEON) aims to detect coherent elastic neutrino-nucleus scattering~(CE$ν$NS) in a NaI(Tl) crystal using reactor anti-electron neutrinos at the Hanbit nuclear power plant complex. A total of 13.3 kg of NaI(Tl) crystals were initially installed in December 2020 at the tendon gallery, 23.7$\pm$0.3\,m away from the reactor core, which operates at a thermal power of 2.8\,GW. Initial engineering operation was performed from May 2021…

wiki_science: Wikipedia Map of Science (2020)
A network of scientific fields, extracted from the English Wikipedia in early 2020. Nodes are wikipedia pages representing natural, formal, social and applied sciences, and two nodes are linked if the cosine similarity of the page content is above a threshold. See <http://www.

Life Education
Great Australian Pods Podcast Directory: #GreatAusPods

Life Education | Great Australian Pods Podcast Directory
Podcast: Life Education Host: Tracey Challenor Category: Kids & Family Sub-Category: Mental Health & Well Being, Parenting & Pregnancy & Families First Episode: 2020 The Life Ed podcast supports…

This https://arxiv.org/abs/2401.03047 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Setting the stage for the search for life with the Habitable Worlds Observatory: Properties of 164 promising planet survey targets
The Decadal Survey on Astronomy and Astrophysics 2020 (Astro2020) has recommended that NASA realize a large IR/O/UV space telescope optimized for high-contrast imaging and spectroscopy of ~25 exo-Earths and transformative general astrophysics. The NASA Exoplanet Exploration Program (ExEP) has subsequently released a list of 164 nearby (d<25 pc) targets deemed the most accessible to survey for potentially habitable exoplanets with the Habitable Worlds Observatory (HWO). We present a catalog of s…

Online disinformation in the 2020 U.S. Election: swing vs. safe states
Manuel Pratelli, Marinella Petrocchi, Fabio Saracco, Rocco De Nicola
https://arxiv.org/abs/2402.18664

Online disinformation in the 2020 U.S. Election: swing vs. safe states
For U.S. presidential elections, most states use the so-called winner-take-all system, in which the state's presidential electors are awarded to the winning political party in the state after a popular vote phase, regardless of the actual margin of victory. Therefore, election campaigns are especially intense in states where there is no clear direction on which party will be the winning party. These states are often referred to as swing states. To measure the impact of such an election law on t…

Handling Open Research Data within the Max Planck Society -- Looking Closer at the Year 2020
Martin Boosen, Michael Franke, Yves Vincent Grossmann, Sy Dat Ho, Larissa Leiminger, Jan Matthiesen
https://arxiv.org/abs/2402.18182

Handling Open Research Data within the Max Planck Society -- Looking Closer at the Year 2020
This paper analyses the practice of publishing research data within the Max Planck Society in the year 2020. The central finding of the study is that up to 40\% of the empirical text publications had research data available. The aggregation of the available data is predominantly analysed. There are differences between the sections of the Max Planck Society but they are not as great as one might expect. In the case of the journals, it is also apparent that a data policy can increase the availabi…

This https://arxiv.org/abs/2308.07203 has been replaced.
link: https://scholar.google.com/scholar?q=a

Successive Refinement of Shannon Cipher System Under Maximal Leakage
We study the successive refinement setting of Shannon cipher system (SCS) under the maximal leakage secrecy metric for discrete memoryless sources under bounded distortion measures. Specifically, we generalize the threat model for the point-to-point rate-distortion setting of Issa, Wagner and Kamath (T-IT 2020) to the multiterminal successive refinement setting. Under mild conditions that correspond to partial secrecy, we characterize the asymptotically optimal normalized maximal leakage region…

a deadly #BirdFlu outbreak has skipped species impact and been affecting seal and #SeaLion colonies...
#SouthAmerica has been particularly hard hit with over 20,000

Bird flu is killing thousands of seals
Avian influenza is killing tens of thousands of seals and sea lions in different corners of the world, disrupting ecosystems and flummoxing scientists who don’t see a clear way to slow the devastating virus. The worldwide bird flu outbreak that began in 2020 has led to the deaths of millions of domesticated birds and spread to wildlife all over the globe. This virus isn’t thought to be a major threat to humans, but its spread in farming operations and ecosystems has caused widespread econom…

Cycling on the Freeway: The Perilous State of Open Source Neuroscience Software
Britta U. Westner, Daniel R. McCloy, Eric Larson, Alexandre Gramfort, Daniel S. Katz, Arfon M. Smith, invited co-signees
https://arxiv.org/abs/2403.19394

Cycling on the Freeway: The Perilous State of Open Source Neuroscience Software
Most scientists need software to perform their research (Barker et al., 2020; Carver et al., 2022; Hettrick, 2014; Hettrick et al., 2014; Switters and Osimo, 2019), and neuroscientists are no exception. Whether we work with reaction times, electrophysiological signals, or magnetic resonance imaging data, we rely on software to acquire, analyze, and statistically evaluate the raw data we obtain - or to generate such data if we work with simulations. In recent years there has been a shift toward …

PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-Domain Field II
Xiurui Zhao, Francesca Civano, Christopher N. A. Willmer, Silvia Bonoli, Chien-Ting Chen, Samantha Creech, Renato Dupke, Francesca M. Fornasini, Rolf A. Jansen, Satoshi Kikuta, Anton M. Koekemoer, Sibasish Laha, Stefano Marchesi, Rosalia O'Brien, Ross Silver, S. P. Willner, Rogier A. Windhorst, Haojing Yan, Jailson Alcaniz, Narciso Benitez, Saulo Carneiro, Javier Cenarro, David C…

PEARLS: NuSTAR and XMM-Newton Extragalactic Survey of the JWST North Ecliptic Pole Time-Domain Field II
We present the second NuSTAR and XMM-Newton extragalactic survey of the JWST North Ecliptic Pole (NEP) Time-Domain Field (TDF). The first NuSTAR NEP-TDF survey (Zhao et al. 2021) had 681 ks total exposure time executed in NuSTAR cycle 5, in 2019 and 2020. This second survey, acquired from 2020 to 2022 in cycle 6, adds 880 ks of NuSTAR exposure time. The overall NuSTAR NEP-TDF survey is the most sensitive NuSTAR extragalactic survey to date, and a total of 60 sources were detected above the 95% …

Upgrade of NaI(Tl) crystal encapsulation for the NEON experiment
J. J. Choi, E. J. Jeon, J. Y. Kim, K. W. Kim, S. H. Kim, S. K. Kim, Y. D. Kim, Y. J. Ko, B. C. Koh, C. Ha, B. J. Park, S. H. Lee, I. S. Lee, H. Lee, H. S. Lee, J. Lee, Y. M. Oh
https://arxiv.org/abs/2404.03691

Upgrade of NaI(Tl) crystal encapsulation for the NEON experiment
The Neutrino Elastic-scattering Observation with NaI(Tl) experiment (NEON) aims to detect coherent elastic neutrino-nucleus scattering~(CE$ν$NS) in a NaI(Tl) crystal using reactor anti-electron neutrinos at the Hanbit nuclear power plant complex. A total of 13.3 kg of NaI(Tl) crystals were initially installed in December 2020 at the tendon gallery, 23.7$\pm$0.3\,m away from the reactor core, which operates at a thermal power of 2.8\,GW. Initial engineering operation was performed from May 2021…

Reports: Commanders to sign former first-round pick Noah Igbinoghene https://www.yardbarker.com/nfl/articles/reports_commanders_to_sign_former_first_round_pick_noah_igbinoghene/s1_17049_40122575

Reports: Commanders to sign former first-round pick Noah Igbinoghene
The Washington Commanders are signing cornerback Noah Igbinoghene to a free agent deal, according to multiple reports Sunday. A first-round pick by the Dolphins in 2020, Igbinoghene will be playing for his third team. Miami traded him to the Dolphins last August, and he became a free agent at the end of the 2023 season. He becomes the fourth member of the Cowboys' 2023 roster to move to the rival Commanders since Washington hired Dan Quinn as head coach in February. Quinn was the defensive coor…

Lee Chatfield, Michigan’s Republican House speaker in 2019 and 2020,
is facing 13 criminal charges
stemming from his use of political dark money on vacations and luxury goods,
the state’s attorney general, Dana Nessel, a Democrat, said on Tuesday
https://ww…

Optical Identification and Spectroscopic Redshift Measurements of 216 Galaxy Clusters from the SRG/eROSITA All-Sky Survey
I. A. Zaznobin, R. A. Burenin, A. A. Belinski, I. F. Bikmaev, M. R. Gilfanov, A. V. Dodin, S. N. Dodonov, M. V. Eselevich, S. F. Zheltoukhov, E. N. Irtuganov, S. S. Kotov, R. A. Krivonos, N. S. Lyskova, E. A. Malygin, N. A. Maslennikova, P. S. Medvedev, A. V. Meshcheryakov, A. V. Moiseev, D. V. Oparin, S. A. Potanin, K. A. Postnov, S. Yu. Sazonov, B. S. Safonov, N. …

Optical Identification and Spectroscopic Redshift Measurements of 216 Galaxy Clusters from the SRG/eROSITA All-Sky Survey
We present the results of the optical identification and spectroscopic redshift measurements of 216 galaxy clusters detected in the SRG/eROSITA all-sky X-ray survey. The spectroscopic observations were performed in 2020-2023 with the 6-m BTA telescope at the Special Astrophysical Observatory of the Russian Academy of Sciences, the 2.5-m telescope at the Caucasus Mountain Observatory of the Sternberg Astronomical Institute of the Moscow State University, the 1.6-m AZT-33IK telescope at the Sayan…

Borel Complexity of the Isomorphism Relation of Archimedean Orders in Finitely Generated Groups
Antoine Poulin
https://arxiv.org/abs/2403.11326 https://

Borel Complexity of the Isomorphism Relation of Archimedean Orders in Finitely Generated Groups
In 2020, Calderoni, Marker, Motto Ros and Shani asked what the Borel complexity of the isomorphism relation of Archimedean orders on $\mathbb{Q}^n$ is. We answer this question by proving that the isomorphism relation of Archimedean orders on $\mathbb{Z}^n$ is not hyperfinite when $n \geq 3$ and not treeable when $n \geq 4$. As a corollary, we get that the isomorphism relation of Archimedean orders on $\mathbb{Q}^n$ is not hyperfinite when $n \geq 3$ and not treeable when $n \geq 4$.

Versatile mixed methods for compressible flows
Edward A. Miller, David M. Williams
https://arxiv.org/abs/2402.18660 https://arxiv.org…

Versatile mixed methods for compressible flows
Versatile mixed finite element methods were originally developed by Chen and Williams for isothermal incompressible flows in "Versatile mixed methods for the incompressible Navier-Stokes equations," Computers & Mathematics with Applications, Volume 80, 2020. Thereafter, these methods were extended by Miller, Chen, and Williams to non-isothermal incompressible flows in "Versatile mixed methods for non-isothermal incompressible flows," Computers & Mathematics with Applications, Volume 125, 2022. …

Scaling of high-Rayleigh-number convection based on internal convective boundary layer
Chenning Tong
https://arxiv.org/abs/2403.17854 https://

Scaling of high-Rayleigh-number convection based on internal convective boundary layer
We propose a phenomenological model for thermal convection at high Rayleigh numbers. It hypothesizes existence of a high-Reynolds-number turbulent boundary layer near each horizontal plate, which is shown to be convective. The convective logarithmic friction law of Tong and Ding (2020) is used to relate the large-scale velocity to the induced friction velocity. The predicted scaling relations of the Nusselt ($Nu$) and Reynolds numbers ($Re$) on the Rayleigh number ($Ra$) do not have a power law…

Thermal transport in a 2D amorphous material
Yuxi Wang, Xingxing Zhang, Wujuan Yan, Nianjie Liang, Haiyu He, Xinwei Tao, Ang Li, Fuwei Yang, Buxuan Li, Te-Huan Liu, Jia Zhu, Wu Zhou, Wei Wang, Lin Zhou, Bai Song
https://arxiv.org/abs/2402.13471

Thermal transport in a 2D amorphous material
Two-dimensional (2D) crystals proved revolutionary soon after graphene was discovered in 2004. However, 2D amorphous materials only became accessible in 2020 and remain largely unexplored. In particular, the thermophysical properties of amorphous materials are of great interest upon transition from 3D to 2D. Here, we probe thermal transport in 2D amorphous carbon. A cross-plane thermal conductivity ($κ$) down to 0.079 $\rm{Wm}^{-1}K^{-1}$ is measured for van der Waals stacked multilayers at ro…

🔊 #NowPlaying on #BBC6Music's #6MusicArtistCollection
Kate Bush:
🎵 The Saxophone Song
#KateBush
https://open.spotify.com/track/4j9dvpEjjIGHuUJDqw8tq8
https://iwannabekate.bandcamp.com/track/the-saxophone-song-2020-remaster

Synthetic Census Data Generation via Multidimensional Multiset Sum
Cynthia Dwork, Kristjan Greenewald, Manish Raghavan
https://arxiv.org/abs/2404.10095 htt…

Synthetic Census Data Generation via Multidimensional Multiset Sum
The US Decennial Census provides valuable data for both research and policy purposes. Census data are subject to a variety of disclosure avoidance techniques prior to release in order to preserve respondent confidentiality. While many are interested in studying the impacts of disclosure avoidance methods on downstream analyses, particularly with the introduction of differential privacy in the 2020 Decennial Census, these efforts are limited by a critical lack of data: The underlying "microdata,…

Reports: Commanders to sign former first-round pick Noah Igbinoghene https://www.yardbarker.com/nfl/articles/reports_commanders_to_sign_former_first_round_pick_noah_igbinoghene/s1_17049_40122575

Reports: Commanders to sign former first-round pick Noah Igbinoghene
The Washington Commanders are signing cornerback Noah Igbinoghene to a free agent deal, according to multiple reports Sunday. A first-round pick by the Dolphins in 2020, Igbinoghene will be playing for his third team. Miami traded him to the Dolphins last August, and he became a free agent at the end of the 2023 season. He becomes the fourth member of the Cowboys' 2023 roster to move to the rival Commanders since Washington hired Dan Quinn as head coach in February. Quinn was the defensive coor…

Borel Complexity of the Isomorphism Relation of Archimedean Orders in Finitely Generated Groups
Antoine Poulin
https://arxiv.org/abs/2403.11326 https://

Borel Complexity of the Isomorphism Relation of Archimedean Orders in Finitely Generated Groups
In 2020, Calderoni, Marker, Motto Ros and Shani asked what the Borel complexity of the isomorphism relation of Archimedean orders on $\mathbb{Q}^n$ is. We answer this question by proving that the isomorphism relation of Archimedean orders on $\mathbb{Z}^n$ is not hyperfinite when $n \geq 3$ and not treeable when $n \geq 4$. As a corollary, we get that the isomorphism relation of Archimedean orders on $\mathbb{Q}^n$ is not hyperfinite when $n \geq 3$ and not treeable when $n \geq 4$.

Scaling of high-Rayleigh-number convection based on internal convective boundary layer
Chenning Tong
https://arxiv.org/abs/2403.17854 https://

Scaling of high-Rayleigh-number convection based on internal convective boundary layer
We propose a phenomenological model for thermal convection at high Rayleigh numbers. It hypothesizes existence of a high-Reynolds-number turbulent boundary layer near each horizontal plate, which is shown to be convective. The convective logarithmic friction law of Tong and Ding (2020) is used to relate the large-scale velocity to the induced friction velocity. The predicted scaling relations of the Nusselt ($Nu$) and Reynolds numbers ($Re$) on the Rayleigh number ($Ra$) do not have a power law…

Bird of the Day — Pectoral Sandpiper, Kansas, 2020
Just passing through
#Nature #NaturePhotography #Birds #Wildlife

Dynamical formation of Gaia BH3 in the progenitor globular cluster of the ED-2 stream
Daniel Mar\'in Pina, Sara Rastello, Mark Gieles, Kyle Kremer, Laura Fitzgerald, Bruno Rando
https://arxiv.org/abs/2404.13036

Dynamical formation of Gaia BH3 in the progenitor globular cluster of the ED-2 stream
Context. The star-black hole (S-BH) binary discovered by the Gaia Collaboration - Gaia BH3 - is chemically and kinematically associated with the metal-poor ED-2 stream in the Milky Way halo. Aims. We explore the possibility that Gaia BH3 was assembled dynamically in the progenitor globular cluster (GC) of the ED-2 stream. Methods. We use a public suite of star-by-star dynamical Monte Carlo models by Kremer et al. (2020) to identify S-BH binaries in GCs with different initial masses and (hal…

Cowboys DB coach Al Harris promoted to assistant head coach https://www.yardbarker.com/nfl/articles/cowboys_db_coach_al_harris_promoted_to_assistant_head_coach/s1_17236_40124371

Cowboys DB coach Al Harris promoted to assistant head coach
Al Harris has a new title. The defensive backs coach for the Dallas Cowboys is expected to be promoted — adding assistant head coach to his current title, Josina Anderson of CBS Sports reported Sunday. Harris, 49, has been on the Cowboys’ coaching staff since 2020 when Mike McCarthy was named the team’s head coach. McCarthy spent four seasons as Harris’ head coach when the former NFL cornerback played for the Green Bay Packers (2006-09). Under Harris’ tutelage, Trevon Diggs and DaRon …

Modelling crypto markets by multi-agent reinforcement learning
Johann Lussange, Stefano Vrizzi, Stefano Palminteri, Boris Gutkin
https://arxiv.org/abs/2402.10803

Modelling crypto markets by multi-agent reinforcement learning
Building on a previous foundation work (Lussange et al. 2020), this study introduces a multi-agent reinforcement learning (MARL) model simulating crypto markets, which is calibrated to the Binance's daily closing prices of $153$ cryptocurrencies that were continuously traded between 2018 and 2022. Unlike previous agent-based models (ABM) or multi-agent systems (MAS) which relied on zero-intelligence agents or single autonomous agent methodologies, our approach relies on endowing agents with rei…

Cowboys DB coach Al Harris promoted to assistant head coach https://www.yardbarker.com/nfl/articles/cowboys_db_coach_al_harris_promoted_to_assistant_head_coach/s1_17236_40124371

Cowboys DB coach Al Harris promoted to assistant head coach
Al Harris has a new title. The defensive backs coach for the Dallas Cowboys is expected to be promoted — adding assistant head coach to his current title, Josina Anderson of CBS Sports reported Sunday. Harris, 49, has been on the Cowboys’ coaching staff since 2020 when Mike McCarthy was named the team’s head coach. McCarthy spent four seasons as Harris’ head coach when the former NFL cornerback played for the Green Bay Packers (2006-09). Under Harris’ tutelage, Trevon Diggs and DaRon …

Commanders sign another former Cowboys player to deal https://www.yardbarker.com/nfl/articles/commanders_sign_another_former_cowboys_player_to_deal/s1_127_40123934

Commanders sign another former Cowboys player to deal
Dan Quinn is assembling Cowboys East in Washington. John Keim of ESPN reported on Sunday that the Washington Commanders are signing cornerback Noah Igbinoghene. The 24-year-old Igbinoghene played out last year on the Cowboys under the new Commanders coach Quinn, who was previously the defensive coordinator in Dallas. A first-round pick in the 2020 NFL Draft (No. 30 overall), Igbinoghene plays far more often on special teams these days than he does on defense. But he fills that role very well, e…

Commanders sign another former Cowboys player to deal https://www.yardbarker.com/nfl/articles/commanders_sign_another_former_cowboys_player_to_deal/s1_127_40123934

Commanders sign another former Cowboys player to deal
Dan Quinn is assembling Cowboys East in Washington. John Keim of ESPN reported on Sunday that the Washington Commanders are signing cornerback Noah Igbinoghene. The 24-year-old Igbinoghene played out last year on the Cowboys under the new Commanders coach Quinn, who was previously the defensive coordinator in Dallas. A first-round pick in the 2020 NFL Draft (No. 30 overall), Igbinoghene plays far more often on special teams these days than he does on defense. But he fills that role very well, e…