Alvaro Zamora

ORCID: 0000-0003-4070-4005
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Research Areas
  • Dark Matter and Cosmic Phenomena
  • Cold Atom Physics and Bose-Einstein Condensates
  • Atomic and Subatomic Physics Research
  • Quantum, superfluid, helium dynamics
  • Galaxies: Formation, Evolution, Phenomena
  • Colorectal Cancer Screening and Detection
  • Radiomics and Machine Learning in Medical Imaging
  • Artificial Intelligence in Healthcare and Education
  • Remote Sensing in Agriculture
  • Theoretical and Computational Physics
  • Cardiac Arrhythmias and Treatments
  • High-Energy Particle Collisions Research
  • Computational Fluid Dynamics and Aerodynamics
  • Cardiovascular Conditions and Treatments
  • Age of Information Optimization
  • Astrophysics and Star Formation Studies
  • Urinary and Genital Oncology Studies
  • Inflammatory Bowel Disease
  • Cosmology and Gravitation Theories
  • AI in cancer detection
  • Impact of Light on Environment and Health
  • Mycobacterium research and diagnosis
  • Sarcoma Diagnosis and Treatment
  • Congenital Heart Disease Studies
  • Gas Dynamics and Kinetic Theory

Kavli Institute for Particle Astrophysics and Cosmology
2021-2024

Stanford University
2020-2024

SLAC National Accelerator Laboratory
2021-2024

Stanford Medicine
2020

Carilion Clinic
2012

Dublin Institute For Advanced Studies
2010

The classical field approximation is widely used to better understand the predictions of ultralight dark matter. Here, we use truncated Wigner method test This approximates a quantum state as an ensemble independently evolving realizations drawn from its function. highly parallelizable and allows direct simulation corrections decoherence times in systems many larger than have been previously studied reference Our study involves 1, 2, 3 spatial dimensions. We simulate three systems,...

10.1103/physrevd.109.083527 article EN Physical review. D/Physical review. D. 2024-04-25

Objective Previous reports of deep learning-assisted assessment Mayo endoscopic subscore (MES) in ulcerative colitis have only explored the ability to distinguish disease remission (MES 0/1) from severe 2/3) or inactive 0) active 1–3). We sought explore utility learning models automated grading each individual MES colitis. Methods In this retrospective study, a total 777 representative still images endoscopies patients with clinically were graded using by two physicians. Each image was...

10.1097/meg.0000000000001952 article EN European Journal of Gastroenterology & Hepatology 2020-10-16

Beyond standard summary statistics are necessary to summarize the rich information on non-linear scales in era of precision galaxy clustering measurements. For first time, we introduce 2D k-th nearest neighbor (kNN) as a statistic for discrete fields. This is direct generalization 1D kNN by disentangling projected distribution from redshift-space distortion signature along line-of-sight. We further two different flavors $k$NNs that trace aspects field: flavor which tabulates distances...

10.1093/mnras/stad1275 article EN Monthly Notices of the Royal Astronomical Society 2023-04-27

We test the degree to which interacting Bosonic systems can be approximated by a classical field as total occupation number is increased. This done with our publicly available code repository, QIBS, new massively parallel solver for these systems. use of toy models well studied in literature and track when description admits quantum corrections, called breaktime. allows us claims regarding rate convergence evolution. initial conditions, including coherent states, eigenstates, states. find...

10.1103/physrevd.105.036012 article EN Physical review. D/Physical review. D. 2022-02-22

Ultralight dark matter, such as kinetically mixed dark-photon matter (DPDM) or axion-like-particle (axion DM), can source an oscillating magnetic-field signal at Earth’s surface. Previous work searched for this in a publicly available dataset of global magnetometer measurements maintained by the SuperMAG collaboration. This “low-fidelity” reported with 1-min time resolution, allowing search to set leading direct constraints on DPDM and axion DM Compton frequencies <a:math...

10.1103/physrevd.110.115036 article EN cc-by Physical review. D/Physical review. D. 2024-12-26

We introduce a numerical method and python package, chimes, that simulates quantum systems initially well approximated by mean field theory using second order extension of the classical approach. call this moment expansion method. In way, we can accurately approximate evolution first moments beyond where breaks down. This allows us to estimate break time approximation without any calculations external theory. investigate accuracy number studied test problems. Interacting bosonic similar...

10.1103/physrevd.104.083007 article EN Physical review. D/Physical review. D. 2021-10-05

In this paper, we introduce our open source implementation of the Coupled Discrete Unified Gas Kinetic Scheme (CDUGKS) https://journals.aps.org/pre/abstract/10.1103/PhysRevE.98.053310, a phase space scheme capable handling wide range flow regimes. We demonstrate its performance on several problems including number well known test from astrophysical fluid dynamics literature such as 1D Sod shock tube, 2D Kelvin-Helmholtz instability, thermoacoustic wave, triangular Gresho vortex, sine wave...

10.1093/mnras/stad770 article EN Monthly Notices of the Royal Astronomical Society 2023-03-14

<b>Introduction</b> Many neonatal centers offer surgical ligation of patent ductus arteriosus (PDA) after two failed courses pharmacologic therapy. This study compares health status extremely premature (< 28 weeks gestation) neonates who medical therapy at the time their second course treatment versus operation. <b>Materials and Methods</b> A retrospective chart review was performed on born less than gestation underwent PDA rounds over a 7.5-year period. Measurements operation were compared....

10.1055/s-0032-1330842 article EN European Journal of Pediatric Surgery 2012-11-21

Using Environmentally Friendly Renormalization, we present an analytic calculation of the series for renormalization constants that describe equation state $O(N)$ model in whole critical region. The solution beta-function equation, running coupling to order two loops, exhibits crossover between strong fixed point, associated with Goldstone modes, and Wilson-Fisher point. Wilson functions $\gamma_\lambda$, $\gamma_\phi$ $\gamma_{\phi^2}$, thus effective exponents transverse vertex functions,...

10.1142/s0217751x10050767 article EN International Journal of Modern Physics A 2010-11-18

You have accessJournal of UrologyPediatric Urology V (MP55)1 Sep 2021MP55-14 DEEP LEARNING ENABLED PREDICTION OF 5-YEAR SURVIVAL IN PEDIATRIC GENITOURINARY RHABDOMYOSARCOMA Hriday Bhambhvani, Alvaro Zamora, Kyla Velaer, Daniel Greenberg, and Kunj Sheth BhambhvaniHriday Bhambhvani More articles by this author , ZamoraAlvaro Zamora VelaerKyla Velaer GreenbergDaniel Greenberg ShethKunj View All Author Informationhttps://doi.org/10.1097/JU.0000000000002085.14AboutPDF ToolsAdd to...

10.1097/ju.0000000000002085.14 article EN The Journal of Urology 2021-08-04
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