Zobrazeno 1 - 10
of 91
pro vyhledávání: '"González Juan D"'
Modelling the acoustic scattering response due to penetrable objects of arbitrary shapes, such as those of many marine organisms, can be computationally intensive, often requiring high-performance computing equipment when considering a completely gen
Externí odkaz:
http://arxiv.org/abs/2312.16721
The purpose of this work is twofold: (a) To present the theoretical formulation of a 3D acoustic propagation model based on a Boundary Element Method (BEM), which uses a half-space Green function in place of the more conventional free-space Green fun
Externí odkaz:
http://arxiv.org/abs/2203.08255
Publikováno v:
ApJ 928, 87 (2021)
Strong gravitational lensing provides unique opportunities to investigate the mass distribution at the cores of galaxy clusters and to study high redshift galaxies. Using $94$ strong lensing models of $74$ cluster fields from the \textit{Hubble} Fron
Externí odkaz:
http://arxiv.org/abs/2104.05585
We propose a new class of robust and Fisher-consistent estimators for mixture models. These estimators can be used to construct robust model-based clustering procedures. We study in detail the case of multivariate normal mixtures and propose a proced
Externí odkaz:
http://arxiv.org/abs/2102.06851
Autor:
Gonzalez, Elizabeth J., Chalela, Martín, Jauzac, Mathilde, Eckert, Dominique, Schaller, Matthieu, Harvey, David, Niemiec, Anna, Koekemoer, Anton M., Barnes, David, Clowe, Doug, Connor, Thomas, Diego, José M., Gonzalez, Juan D. Remolina, Steinhardt, Charles L.
In the context of the BUFFALO (Beyond Ultra-deep Frontier Fields And Legacy Observations) survey, we present a new analysis of the merging galaxy cluster MACS\,J0416.1-2403 ($z = 0.397$) and its parallel field using the data collected by the Hubble F
Externí odkaz:
http://arxiv.org/abs/1912.04311
Autor:
Mahler, Guillaume, Sharon, Keren, Gladders, Michael D., Bleem, Lindsey, Bayliss, Matthew B., Calzadilla, Michael S., Floyd, Benjamin, Khullar, Gourav, McDonald, Michael, Gonzàlez, Juan D. Remolina, Schrabback, Tim, Stark, Antony A., Busch, Jan Luca van den
We present an analysis of the mass distribution inferred from strong lensing by SPT-CL J0356-5337, a cluster of galaxies at redshift z = 1.0359 revealed in the follow-up of the SPT-SZ clusters. The cluster has an Einstein radius of Erad=14 for a sour
Externí odkaz:
http://arxiv.org/abs/1910.14006
A model for computing acoustic scattering by a swimbladdered fish with coupling to surrounding fish tissue that is assumed to behave as a homogeneous fluid, is presented. Mathematically, this corresponds to considering the problem of two penetrable s
Externí odkaz:
http://arxiv.org/abs/1909.11781
K means is a popular non-parametric clustering procedure introduced by Steinhaus (1956) and further developed by MacQueen (1967). It is known, however, that K means does not perform well in the presence of outliers. Cuesta-Albertos et al (1997) intro
Externí odkaz:
http://arxiv.org/abs/1906.08198
Publikováno v:
In Molecular Catalysis 1 April 2023 540
Modelling High-Frequency Backscattering from a Mesh of Curved Surfaces Using Kirchhoff Approximation
Publikováno v:
Journal of Theoretical and Computational Acoustics (2019): 1850057
The Kirchhoff approximation (K-A) to calculate the acoustic backscattering of a complex structure can be evaluated using a discretized version of its surface (i.e. a $\textit{mesh}$). From the computational viewpoint, the most accesible approach is t
Externí odkaz:
http://arxiv.org/abs/1805.06945