Basis-Oriented Low-rank Transfer for Few-Shot and Test-Time Adaptation

Posted by klaurent Stanford

Kavli Affiliate: Hsiao-Mei (Sherry) Cho| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Adapting large pre-trained models to unseen tasks under tight data and compute budgets remains challenging. Meta-learning approaches explicitly learn good initializations, but they require an additional meta-training phase over many tasks, incur high training cost, and can be unstable. At the same […]


Continue.. Basis-Oriented Low-rank Transfer for Few-Shot and Test-Time Adaptation

Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations

Posted by klaurent Peking

Kavli Affiliate: Lijing Shao | Summary:We investigate the presence and spatial characteristics of the jet base emission in M87* at 230 GHz, enabled by the enhanced uv coverage in the 2021 Event Horizon Telescope (EHT) observations. The addition of the 12-m Kitt Peak Telescope and NOEMA provides two key intermediate-length baselines to SMT and the […]


Continue.. Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations

Need-selective gating of dopamine neuron cue responses by real and virtual hunger

Posted by dbos UCSF

Kavli Affiliate: Anatol Kreitzer, Joshua Berk and Zachary Knight | Authors: Aphroditi A Mamaligas, Joshua Berke, Anatol C Kreitzer and Zachary A Knight | Summary: The midbrain dopamine system is important for linking reward-predictive cues to learning and 20 motivation. Here we investigated how dopamine neuron responses to food and water cues are modulated by […]


Continue.. Need-selective gating of dopamine neuron cue responses by real and virtual hunger

Interrogating the Regulatory Function of HAQERs during Human Cortical Development

Posted by dbos UCSF

Kavli Affiliate: Alex Pollen | Authors: Yashodara Abeykoon, Natalie Dzikowski, Yanting Luo, Enakshi Sinniah, Seth Weaver, Bryan J Pavlovic, Jenelle L Wallace, Riley J Mangan, Craig B Lowe and Alex Aaron Pollen | Summary: Background Sequence divergence within gene regulatory elements has been proposed to play an important role in the evolution of human-specific traits, […]


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Non-visual light modulates behavioral memory and gene expression in C. elegans

Posted by dbos UCSF

Kavli Affiliate: Noelle L’Etoile | Authors: Zhijian Ji, Bingying Wang, Junqiang Liu, Rashmi K. Chandra, Winnie Yang, Yong Long, Michael Egan, Noelle L’Etoile and Dengke K. Ma | Summary: Visible light influences a range of physiological processes, yet how animals respond to it independently of the visual system remains largely unknown. Here, we uncover a […]


Continue.. Non-visual light modulates behavioral memory and gene expression in C. elegans

$S^5$: Tidal Disruption in Crater 2 and Formation of Diffuse Dwarf Galaxies in the Local Group

Posted by klaurent Chicago

Kavli Affiliate: Alexander Ji | Summary:We present results of a spectroscopic campaign around the diffuse dwarf galaxy Crater 2 (Cra2) and its tidal tails as part of the Southern Stellar Stream Spectroscopic Survey ($S^5$). Cra2 is a Milky Way dwarf spheroidal satellite with extremely cold kinematics, but a huge size similar to the Small Magellanic […]


Continue.. $S^5$: Tidal Disruption in Crater 2 and Formation of Diffuse Dwarf Galaxies in the Local Group

Photon (Non)Conservation in the Reduced Speed of Light Approximation and How to (Almost) Fix It

Posted by klaurent Chicago

Kavli Affiliate: Nickolay Gnedin | Summary:The "Reduced Speed of Light" (RSL) approximation is commonly used to speed up radiative transfer calculations in cosmological simulations. However, it has been shown previously that the RSL approximation leads to photon non-conservation when the radiation field is rapidly evolving in time. I show that these missing photons can be […]


Continue.. Photon (Non)Conservation in the Reduced Speed of Light Approximation and How to (Almost) Fix It

Photon (Non)Conservation in the Reduced Speed of Light Approximation and How to (Almost) Fix It

Posted by klaurent Chicago

Kavli Affiliate: Nickolay Gnedin | Summary:The "Reduced Speed of Light" (RSL) approximation is commonly used to speed up radiative transfer calculations in cosmological simulations. However, it has been shown previously that the RSL approximation leads to photon non-conservation when the radiation field is rapidly evolving in time. I show that these missing photons can be […]


Continue.. Photon (Non)Conservation in the Reduced Speed of Light Approximation and How to (Almost) Fix It

COSMOS-3D: Dense Circumnuclear Gas across Black Hole Growth Phases at z ~ 3

Posted by klaurent Peking

Kavli Affiliate: Luis Ho | Summary:We report the discovery of two broad-line X-ray AGNs (cid_414 and cid_947) at z ~ 3 identified in the JWST Cycle 3 COSMOS-3D program using NIRCam F444W grism spectroscopy. Both exhibit prominent HeI+Pa$γ$ emission and absorption, indicative of circumnuclear dense gas that is traced in these systems. Complementary UV and […]


Continue.. COSMOS-3D: Dense Circumnuclear Gas across Black Hole Growth Phases at z ~ 3

The DREAMS Project: Disentangling the Impact of Halo-to-Halo Variance and Baryonic Feedback on Milky Way Satellite Galaxies

Posted by klaurent MIT

Kavli Affiliate: Lina Necib | Summary:We analyze the properties of satellite galaxies around 1,024 Milky Way-mass hosts from the DREAMS Project, simulated within a $Λ$CDM cosmology. Utilizing the TNG galaxy-formation model, the DREAMS simulations incorporate both baryonic physics and cosmological uncertainties for a large sample of galaxies with diverse environments and formation histories. We investigate […]


Continue.. The DREAMS Project: Disentangling the Impact of Halo-to-Halo Variance and Baryonic Feedback on Milky Way Satellite Galaxies