Rollplex: Cross-Phase GPU Spatial Sharing for Vision Language Model Post-Training

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Vision-language models (VLMs) enable embodied agents to reason and act from visual observations and language instructions. Reinforcement learning (RL) post-training enhances these capabilities using task feedback, but current on-policy RL runtimes execute rollout, reference scoring, and actor training in strict serial phases. While effective for text-only RL, this phase-granular execution is […]


Continue.. Rollplex: Cross-Phase GPU Spatial Sharing for Vision Language Model Post-Training

XRISM reveals sloshing-driven gas motions in the core of Abell 2029

Posted by klaurent MIT

Kavli Affiliate: Eric Miller | Summary:We investigate the velocity structure of the intracluster medium (ICM) in the core of the relaxed cool-core cluster Abell 2029 using XRISM Resolve spectroscopy. We analyze combined XRISM Resolve observations and divide the central region into several subregions. To account for photon mixing caused by the XRISM point spread function, […]


Continue.. XRISM reveals sloshing-driven gas motions in the core of Abell 2029

The Evolution of the ACIS Contamination Layer on the Chandra X-ray Observatory from 2010 to 2026

Posted by klaurent MIT

Kavli Affiliate: Herman Marshall | Summary:The Chandra X-ray Observatory (CXO) was launched over 27 years ago and has been delivering spectacular science over the course of its mission. The Advanced CCD Imaging Spectrometer (ACIS) is the prime instrument on the satellite, conducting over 90% of the observations. The CCDs operate at a temperature of $-$120$^circ$C […]


Continue.. The Evolution of the ACIS Contamination Layer on the Chandra X-ray Observatory from 2010 to 2026

CoDS: Robust Collaborative Perception via Expert-driven Detection and BEV Segmentation

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Collaborative perception breaks through single-view limitations via multi-agent information exchange. However, multi-source noise such as pose errors and communication delays degrades fusion feature quality, constraining perception performance. Joint training of detection and BEV segmentation provides a natural remedy, where segmented road regions help constrain target distributions and detection bounding boxes help […]


Continue.. CoDS: Robust Collaborative Perception via Expert-driven Detection and BEV Segmentation

Energy Partitioning in Dust-catalyzed $mathrmH_2$ and HD Formation Revealed by Molecular Simulations Considering Nuclear Quantum Effects

Posted by klaurent Peking

Kavli Affiliate: Lile Wang |Summary:Molecular hydrogen formation on interstellar dust grains is a key surface process in the interstellar medium, but the redistribution of the recombination energy between the substrate and the nascent molecule remains poorly understood. Here, we use ring-polymer molecular dynamics (RPMD) with a machine-learning force field to investigate energy partitioning during $mathrmH_2$ […]


Continue.. Energy Partitioning in Dust-catalyzed $mathrmH_2$ and HD Formation Revealed by Molecular Simulations Considering Nuclear Quantum Effects

GIAnT: a Glutamate Imaging Analysis Toolbox

Posted by dbos Hopkins

Kavli Affiliate: Adam S. Charles | Authors: Michael E. Xie, Johannes Friedrich, Elizabeth Wirsching, Caleb Jones Shibu, Maedeh Seyedolmohadesin, Naveen Ouellette, Tim Wang, Karel Svoboda, Adam S Charles and Kaspar Podgorski | Summary: Recent advances in fluorescent indicators and optical microscopy now enable in vivo synaptic imaging of glutamate, which transmits the majority of signals between neurons […]


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Bats decouple sonar gaze from steering to resolve sensory conflict

Posted by dbos Hopkins

Kavli Affiliate: Cynthia F. Moss | Authors: Nikita M Finger, Shivam S Chitnis, Grace Capshaw, Alara Kaplanoglu, Anand Krishnan and Cynthia F Moss | Summary: When sensory modalities yield conflicting information, animals must rapidly reassess stimuli to select their actions. We induced auditory–visual conflict in free-flying echolocating Egyptian fruit bats, by fitting animals with prisms […]


Continue.. Bats decouple sonar gaze from steering to resolve sensory conflict

Heterogeneous single-cell dynamics support stable population codes for objects in the mouse anterior cingulate cortex

Posted by dbos NTNU

Kavli Affiliate: Clifford Kentros | Authors: Lucie A.L. Descamps, Wesley P. Clawson, Miguel M. Carvalho, Thomas Rogerson, Omer Hazon, Oscar M.T. Chadney, Mark J. Schnitzer and Clifford Kentrosa | Summary: Remembering object locations is crucial for survival, yet how the anterior cingulate cortex (ACC) encodes spatial features across repeated experiences has not been fully characterized. […]


Continue.. Heterogeneous single-cell dynamics support stable population codes for objects in the mouse anterior cingulate cortex

Humans homozygous for rare or common hypomorphic IL23R variants are prone to tuberculosis

Posted by dbos Rockefeller

Kavli Affiliate: Jean-Laurent Casanova | Authors: Diana Olguín Calderón, Laura E. Kilpatrick, Clément Conil, Quentin Philippot, Masato Ogishi, Joseph Vellutini, Ji Eun Han, Narelle Keating, Hailun Li, Geetha Rao, Jonathan Bohlen, Charles S. Lay, Simon Platt, Gaspard Kerner, Elsa Feredj, Jessica N. Peel, Mana Momenilandi, Yoann Seeleuthner, Candice Lainé, Camille Soudée, Claire Leloup, Cecile Debuisson, […]


Continue.. Humans homozygous for rare or common hypomorphic IL23R variants are prone to tuberculosis

Laser Metrology for Precision Alignment of Transmission Gratings in the REDSoX Soft X-ray Polarimeter

Posted by klaurent MIT

Kavli Affiliate: Ralf Heilmann | Summary:The Rocket Experiment Demonstration of a Soft X-ray Polarimeter (REDSoX) is a NASA sounding-rocket mission designed to perform the first astrophysical spectropolarimetry in the 0.2-0.4 keV energy band. The instrument uses critical-angle transmission (CAT) gratings to disperse incident X-rays onto laterally graded multilayer (LGML) mirrors, requiring 48 individual gratings to […]


Continue.. Laser Metrology for Precision Alignment of Transmission Gratings in the REDSoX Soft X-ray Polarimeter