Rank-Based Tests for Mutual Independence of High-Dimensional Random Vectors via $L_q$ Norm

Posted by klaurent Peking

Kavli Affiliate: Feng Long| Summary: We consider the problem of testing mutual independence among the components of a high-dimensional random vector. Building on the rank-based max-sum framework, we introduce fixed finite-$L_q$ power-sum statistics under three general classes of rank-based correlations: simple linear rank statistics, non-degenerate rank-based U-statistics and degenerate rank-based U-statistics. The proposed statistics interpolate […]


Continue.. Rank-Based Tests for Mutual Independence of High-Dimensional Random Vectors via $L_q$ Norm

Non-local low energy neutral excitations in a strongly disordered triangular Mott magnet Cr$_3$Se$_2$Br$_5$

Posted by klaurent Berkeley

Kavli Affiliate: James Analytis| Summary:Understanding if low-energy excitations can remain itinerant in the presence of strong disorder remains a central challenge in frustrated quantum magnets, where disorder is generally expected to localize excitations through Anderson-like mechanisms. Here we report the emergence of charge-neutral itinerant excitations in a van der Waals compound Cr$_3$Se$_2$Br$_5$, a strongly disordered […]


Continue.. Non-local low energy neutral excitations in a strongly disordered triangular Mott magnet Cr$_3$Se$_2$Br$_5$

Layer 6 corticothalamic neurons show diverse and dynamic responses that support a role in cortical gain control in noisy environments

Posted by dbos Hopkins

Kavli Affiliate: Patrick Kanold | Authors: Marina Cardoso de Oliveira and Patrick O Kanold | Summary: Listening in complex environments requires the enhancement of relevant sounds and suppression of irrelevant ones. Corticothalamic neurons (CTNs) in auditory cortex layer (L) 6 provide modulatory feedback to thalamic nuclei and to upper cortical layers and are thought to […]


Continue.. Layer 6 corticothalamic neurons show diverse and dynamic responses that support a role in cortical gain control in noisy environments

Photon-Resolved Excitation-Denoised (PRED) Three-Photon Imaging Improves Detection of Neuronal Activity in Awake and Behaving Mice

Posted by dbos Columbia

Kavli Affiliate: Attila Losonczy and Darcy Peterka | Authors: Attila Losonczy, Tiberiu S Mihaila, Eunji Kong, Adrian Negrean, Tristan Geiller and Darcy S Peterka | Summary: Three-photon microscopy (3PM) has enabled the optical access of neurons ∼500-1500µm below the brain surface but has been limited to slow imaging frame rates or small imaged area due […]


Continue.. Photon-Resolved Excitation-Denoised (PRED) Three-Photon Imaging Improves Detection of Neuronal Activity in Awake and Behaving Mice

Thermal Spin Polarization Driven by Nuclear Spin-Orbit Coupling in Neutron Star Pasta

Posted by klaurent UCAS

Kavli Affiliate: Mamoru Matsuo | Summary:We discuss anomalous spin polarization on the surface of nuclear pasta in a neutron star, driven by a nuclear spin-orbit interaction. We present an effective two-band model of surface-localized neutrons near the nuclear pasta. The central point is the emergence of a Rashba-type spin-orbit hybridization generated by the neutron–nucleus spin-orbit […]


Continue.. Thermal Spin Polarization Driven by Nuclear Spin-Orbit Coupling in Neutron Star Pasta

Mapping spatially organized molecular and genetic signatures of schizophrenia across multiple scales in human prefrontal cortex

Posted by dbos Hopkins

Kavli Affiliate: Keri Martinowich | Authors: Sang Ho Kwon, Boyi Guo, Cindy Fang, Madhavi Tippani, Svitlana V Bach, Ryan A Miller, Sarah E Maguire, Artemis Iatrou, Geo Pertea, Nicholas J Eagles, Madeline R Valentine, Seyun Oh, Aarti Jajoo, Vijetha Balakundi, Yufeng Du, Annie B Nguyen, Ruth Zhang, Uma M Kaipa, Heena R Divecha, Jashandeep S. […]


Continue.. Mapping spatially organized molecular and genetic signatures of schizophrenia across multiple scales in human prefrontal cortex

VectorArk: Learning Practical Image Vectorization with Rounded Polygon Representation

Posted by klaurent UCSB

Kavli Affiliate: Matthew Fisher | Summary:Recent vision-language model (VLM)-based approaches have achieved impressive results on image vectorization tasks. However, they are typically evaluated on synthetic benchmarks, where clean SVGs are rasterized at high resolution and then re-vectorized. As a result, these methods generalize poorly to real-world scenarios, such as images with unknown rasterization methods or […]


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The Lumina Project: The Demographics of Active Galactic Nuclei from Quasars to Little Red Dots at $zgeq 3$

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:High-redshift active galactic nuclei (AGN) serve as powerful probes of early black-hole growth, galaxy formation, and the evolving intergalactic medium (IGM). In this work, we use Lumina, a cosmological radiation-hydrodynamic simulation spanning the epochs of hydrogen and helium reionization, which combines a large $(500,rm cMpc)^3$ volume with $2times 6000^3$ resolution […]


Continue.. The Lumina Project: The Demographics of Active Galactic Nuclei from Quasars to Little Red Dots at $zgeq 3$

Spatial Regulation of CAR Signaling Enables Logic-Gated Activity

Posted by dbos Hopkins

Kavli Affiliate: Denis Wirtz | Authors: Tushar D Nichakawade, Brian Mog, Alexander D Pearlman, Taha S. Ahmedna, Nikita Marcou, Ricardo Mora-Cartin, Evangeline Watson, Bum Seok Lee, Sarah R. DiNapoli, Nickolas Papadopoulos, Chetan Bettegowda, Marco Dal Molin, Denis Wirtz, Drew M. Pardoll, Suman Paul, Surojit Sur, Kathleen L. Gabrielson, Shibin Zhou, Bert Vogelstein and Kenneth W. […]


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The AGORA High-resolution Galaxy Simulations Comparison Project. XI: Solving the Non-Spherical Morphology and Evolution of Dark Matter Halos with Haskap Pie

Posted by klaurent Stanford

Kavli Affiliate: Tom Abel | Summary:We introduce a halo solving and tracking procedure that intrinsically treats dark matter halos as non-spherical objects by leveraging the bound particle searching techniques used in Haskap Pie. The AGORA Collaboration’s hydrodynamic simulation CosmoRun}project provides a useful laboratory to explore trends in dark matter halo morphology that are revealed by […]


Continue.. The AGORA High-resolution Galaxy Simulations Comparison Project. XI: Solving the Non-Spherical Morphology and Evolution of Dark Matter Halos with Haskap Pie