dbos – Page 36 – Kavli Institute Pre-Print Publications

PtyRAD: A High-performance and Flexible Ptychographic Reconstruction Framework with Automatic Differentiation

Posted by dbos May 12, 2025May 28, 2025Cornell

Kavli Affiliate: David A. Muller | First 5 Authors: Chia-Hao Lee, Steven E. Zeltmann, Dasol Yoon, Desheng Ma, David A. Muller | Summary: Electron ptychography has recently achieved unprecedented resolution, offering valuable insights across diverse material systems, including in three dimensions. However, high-quality ptychographic reconstruction is computationally expensive and time consuming, requiring a significant amount […]

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ABS-Mamba: SAM2-Driven Bidirectional Spiral Mamba Network for Medical Image Translation

Posted by dbos May 12, 2025May 28, 2025Peking

Kavli Affiliate: Feng Yuan | First 5 Authors: Feng Yuan, Yifan Gao, Wenbin Wu, Keqing Wu, Xiaotong Guo | Summary: Accurate multi-modal medical image translation requires ha-rmonizing global anatomical semantics and local structural fidelity, a challenge complicated by intermodality information loss and structural distortion. We propose ABS-Mamba, a novel architecture integrating the Segment Anything Model […]

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Weak transcription factor clustering at binding sites can facilitate information transfer from molecular signals

Posted by dbos May 12, 2025May 28, 2025Delft

Kavli Affiliate: Jos W. Zwanikken | First 5 Authors: Tamara Mijatović, Aimée R. Kok, Jos W. Zwanikken, Marianne Bauer, | Summary: Transcription factor concentrations provide signals to cells that allow them to regulate gene expression to make correct cell fate decisions. Calculations for noise bounds in gene regulation suggest that clustering or cooperative binding of […]

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Rapid formation of a very massive star >50000 $M_odot$ and subsequently an IMBH from runaway collisions. Direct N-body and Monte Carlo simulations of dense star clusters

Posted by dbos May 12, 2025May 28, 2025Peking

Kavli Affiliate: Rainer Spurzem | First 5 Authors: Marcelo C. Vergara, Abbas Askar, Albrecht W. H. Kamlah, Rainer Spurzem, Francesco Flammini Dotti | Summary: Context. We present simulations of a massive young star cluster using textsc{Nbody6++GPU} and textsc{MOCCA}. The cluster is initially more compact than previously published models, with one million stars, a total mass […]

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Resonant Self-Diffraction of Femtosecond Extreme Ultraviolet Pulses in Cobalt

Posted by dbos May 12, 2025Caltech

Kavli Affiliate: Scott K. Cushing | First 5 Authors: Alexei A. Maznev, Wonseok Lee, Scott K. Cushing, Dario De Angelis, Danny Fainozzi | Summary: Self-diffraction is a non-collinear four-wave mixing technique well-known in optics. We explore self-diffraction in the extreme ultraviolet (EUV) range, taking advantage of intense femtosecond EUV pulses produced by a free electron […]

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Differentiable NMS via Sinkhorn Matching for End-to-End Fabric Defect Detection

Posted by dbos May 11, 2025Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Zhengyang Lu, Bingjie Lu, Weifan Wang, Feng Wang, | Summary: Fabric defect detection confronts two fundamental challenges. First, conventional non-maximum suppression disrupts gradient flow, which hinders genuine end-to-end learning. Second, acquiring pixel-level annotations at industrial scale is prohibitively costly. Addressing these limitations, we propose a differentiable NMS […]

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Symmetry in Fundamental Parameters of Galaxies on the Star-forming Main Sequence

Posted by dbos May 11, 2025Peking

Kavli Affiliate: Luis C. Ho | First 5 Authors: Zhicheng He, Enci Wang, Luis C. Ho, Huiyuan Wang, Yong Shi | Summary: The Star-Forming Main Sequence (SFMS) serves as a critical framework for understanding galaxy evolution, highlighting the relationship between star formation rates (SFR) and stellar masses M_* across cosmic time. Despite its significance, the […]

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Separable global and local beta burst dynamics in motor cortex of primates

Posted by dbos May 10, 2025May 19, 2025UCSF

Kavli Affiliate: Karunesh Ganguly | Authors: Preeya Khanna, behraz farrokhi, Hoseok Choi, Sandon Griffin, Ian Heimbuch, Lisa Novik, Katherina Thiesen, John H Morrison, Robert Morecraft and Karunesh Ganguly | Summary: Sensorimotor beta band oscillations are known to modulate during normal movement control and abnormal beta modulation is linked to pathological bradykinesia. However, the functional differences […]

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TESS Investigation — Demographics of Young Exoplanets (TI-DYE) III: an inner super-Earth in TOI-2076

Posted by dbos May 9, 2025MIT

Kavli Affiliate: Andrew Vanderburg | First 5 Authors: Madyson G. Barber, Andrew W. Mann, Andrew Vanderburg, Andrew W. Boyle, Ana Isabel Lopez Murillo | Summary: Young (<500 Myr) multi-planet transiting systems are valuable environments for understanding planet evolution by offering an opportunity to make direct comparisons between planets from the same formation conditions. TOI-2076 is […]

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When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66

Posted by dbos May 9, 2025Cambridge

Kavli Affiliate: Roberto Maiolino | First 5 Authors: Robert G. Pascalau, Francesco D’Eugenio, Sandro Tacchella, Roberto Maiolino, Michele Cappellari | Summary: JWST observations uncovered a large number of massive quiescent galaxies (MQGs) at z>3, which theoretical models struggle to reproduce. Explaining the number density of such objects requires extremely high conversion efficiency of baryons into […]

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