DevelopmentODE: Structured Neural ODEs for Early Brain Development Dynamics Across a Decade

Posted by klaurent Caltech

Kavli Affiliate: Wei Gao| Summary:Understanding how individual brain development unfolds over childhood requires modeling developmental trajectories from sparse longitudinal observations. Long-term neurodevelopmental forecasting is challenging because each child is typically observed at only a few irregularly spaced visits, while developmental dynamics vary across individuals and age. Generic continuous-time models accommodate irregular timing but often absorb […]


Continue.. DevelopmentODE: Structured Neural ODEs for Early Brain Development Dynamics Across a Decade

Axons organize into micro-tracts around the cortical vasculature

Posted by dbos UCSD / Salk

Kavli Affiliate: David Kleinfeld | Authors: Javier Josue How, Bethanny Danskin, Benjamin Pedigo, Elana Marie Memke, Stefan Stamenkovic, David Kleinfeld and Andy Shih | Summary: Neural activity is metabolically costly and supported by local increases in cerebral blood flow. The process by which neural activity drives blood flow increase, neurovascular coupling (NVC), remains poorly understood. […]


Continue.. Axons organize into micro-tracts around the cortical vasculature

Three dimensional reconstruction of the human nucleus accumbens reveals topographic organization and molecular heterogeneity of D1-islands across the anterior posterior axis

Posted by dbos Hopkins

Kavli Affiliate: Keri Martinowich | Authors: Robert A Phillips III, Jianing Yao, Svitlana V Bach, Ishbel Del Rosario Alvia, Yufeng Du, Sarah E Maguire, Ruth Zhang, Ryan A Miller, Joel E Kleinman, Thomas M Hyde, Keri Martinowich, Kristen R Maynard and Stephanie C Hicks | Summary: Spatial transcriptomics has transformed molecular characterization of the human […]


Continue.. Three dimensional reconstruction of the human nucleus accumbens reveals topographic organization and molecular heterogeneity of D1-islands across the anterior posterior axis

Worlds Next Door. V. A Candidate Solar System Scale Super-Jupiter in the 61 Cygni Binary System

Posted by klaurent Caltech

Kavli Affiliate: Dimitri Mawet| Summary:We present new constraints on a candidate third companion in the 61 Cygni binary system-one of the closest neighbors to our solar system (3.5 pc), the first stars to have a measured parallax, and two of the most favorable targets for habitable zone exo-Earth searches with future direct imaging missions. Kervella […]


Continue.. Worlds Next Door. V. A Candidate Solar System Scale Super-Jupiter in the 61 Cygni Binary System

Reduced scaling implementation of the coupled cluster-based static embedding method, MPCC with density fitting

Posted by klaurent Berkeley

Kavli Affiliate: Birgitta Whaley | Summary:An improved algorithm to implement our previously proposed static quantum embedding method MPCC (J. Chem. Phys. 161, 164107 (2024)) is presented. It uses the density-fitting (DF) approximation for the electron-repulsion integrals (ERIs) across all layers of the embedding method: the low-level method, the screened interaction, and the high-level method. Additionally, […]


Continue.. Reduced scaling implementation of the coupled cluster-based static embedding method, MPCC with density fitting

Reduced scaling implementation of the coupled cluster-based static embedding method, MPCC with density fitting

Posted by klaurent Berkeley

Kavli Affiliate: Birgitta Whaley | Summary:An improved algorithm to implement our previously proposed static quantum embedding method MPCC (J. Chem. Phys. 161, 164107 (2024)) is presented. It uses the density-fitting (DF) approximation for the electron-repulsion integrals (ERIs) across all layers of the embedding method: the low-level method, the screened interaction, and the high-level method. Additionally, […]


Continue.. Reduced scaling implementation of the coupled cluster-based static embedding method, MPCC with density fitting

What Should Federated LoRA Share? FedSAIL via Input-aware Subspace Alignment

Posted by klaurent Peking

Kavli Affiliate: Feng Long| Summary: Federated low-rank adaptation (LoRA) requires identifying an update structure that is shared across heterogeneous clients. Prior work reports strong similarity among trained LoRA projection matrices across clients; however, such agreement may be largely induced by common initialization and collapses toward random overlap under independent initialization. More crucially, relying solely on […]


Continue.. What Should Federated LoRA Share? FedSAIL via Input-aware Subspace Alignment

Cross-correlation between CMB B-modes and Faraday Rotation as a Novel Probe of Primordial Magnetic Fields

Posted by klaurent Tokyo

Kavli Affiliate: Toshiya Namikawa | Summary:We investigate the cross-bispectrum between the cosmic microwave background (CMB) $B$-mode polarization and two Faraday rotation (FR) angles as a new probe of primordial magnetic fields (PMFs). Assuming Gaussian PMFs with both non-helical and helical components, we derive the $Bαα$ bispectrum and decompose it into parity-even and parity-odd contributions. The […]


Continue.. Cross-correlation between CMB B-modes and Faraday Rotation as a Novel Probe of Primordial Magnetic Fields

Galaxy and Halo Assembly Bias in Alternative Dark Matter Models

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:The clustering of dark matter halos depends not only on halo mass but also on secondary halo properties, a phenomenon known as halo assembly bias. Coupled with variations in halo occupation, this dependence impacts galaxy clustering, an effect termed galaxy assembly bias. While previous studies have found only weak cosmological […]


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Investigating potential causes for high inferred intrinsic temperatures of warm transiting Neptune and Sub-Neptune planets

Posted by klaurent MIT

Kavli Affiliate: Sara Seager | Summary:Atmospheric characterization of a warm 10-30 Myr old sub-Neptune progenitor (V1298 Tau b) and a $sim$3.4 Gyr old warm super-Neptune (WASP-107b) using JWST have revealed extremely low methane abundance. Atmospheric forward models find higher than expected inferred intrinsic temperatures (450~K and 500~K) — inconsistent with theoretical planet formation and core-envelope […]


Continue.. Investigating potential causes for high inferred intrinsic temperatures of warm transiting Neptune and Sub-Neptune planets