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An accurate estimation of the experimental field-emission area remains a great challenge in vacuum electronics. The lack of convenient means, which can be used to measure this parameter, creates a critical knowledge gap, making it…

应用物理 · 物理学 2021-08-18 Taha Y. Posos , Oksana Chubenko , Sergey V. Baryshev

A three-dimensional Monte Carlo code for modelling radiation transport in Type Ia supernovae is described. In addition to tracking Monte Carlo quanta to follow the emission, scattering and deposition of radiative energy, a scheme involving…

天体物理学 · 物理学 2008-11-26 S. A. Sim

We introduce Doppler time-of-flight (D-ToF) rendering, an extension of ToF rendering for dynamic scenes, with applications in simulating D-ToF cameras. D-ToF cameras use high-frequency modulation of illumination and exposure, and measure…

图形学 · 计算机科学 2023-10-06 Juhyeon Kim , Wojciech Jarosz , Ioannis Gkioulekas , Adithya Pediredla

A survey of atomic binding energies used by general purpose Monte Carlo systems is reported. Various compilations of these parameters have been evaluated; their accuracy is estimated with respect to experimental data. Their effects on…

We apply the wavelet transform modulus maxima (WTMM) method to the analysis of simulated MBE-grown surfaces. In contrast to the structure function approach commonly used in the literature, this new method permits an investigation of the…

统计力学 · 物理学 2009-10-31 Martin Ahr , Michael Biehl

Digital Volume Correlation (DVC) is widely used for the analysis of three-dimensional displacement and strain fields based on CT scans. However, the applicability of DVC methods is limited when it comes to geomaterials: CT speckles are…

图像与视频处理 · 电气工程与系统科学 2024-07-17 Chengsheng Li , Zhijun Liu

Despite the recent progress in enhancing the efficacy of image deblurring, the limited decoding capability constrains the upper limit of State-Of-The-Art (SOTA) methods. This paper proposes a pioneering work, Adaptive Patch Exiting…

计算机视觉与模式识别 · 计算机科学 2024-06-14 Xintian Mao , Qingli Li , Yan Wang

This paper documents the winning entry at the CVPR2017 vehicle velocity estimation challenge. Velocity estimation is an emerging task in autonomous driving which has not yet been thoroughly explored. The goal is to estimate the relative…

计算机视觉与模式识别 · 计算机科学 2018-02-21 Moritz Kampelmühler , Michael G. Müller , Christoph Feichtenhofer

This paper updates and complements a previously published evaluation of computational methods for total and partial cross sections, relevant to modeling the photoelectric effect in Monte Carlo particle transport. It examines calculation…

计算物理 · 物理学 2020-02-14 Tullio Basaglia , Maria Grazia Pia , Paolo Saracco

In Single Photon Emission Computed Tomography (SPECT), 3D images usually reconstructed by performing a set of bidimensional (2D) analytical or iterative reconstructions can also be reconstructed using an iterative reconstruction algorithm…

仪器与探测器 · 物理学 2007-05-23 Z. El Bitar , I. Buvat , V. Breton , D. Lazaro , D. Hill

We introduce a Monte Carlo integration-based Shooting and Bouncing Ray (SBR) algorithm for electromagnetic scattering, specifically targeting complex dielectric materials. Unlike traditional deterministic SBR methods, our approach is the…

计算工程、金融与科学 · 计算机科学 2025-11-12 Samuel Audia , Dinesh Manocha , Matthias Zwicker

We introduce a particle-number reprojection method in the shell model Monte Carlo that enables the calculation of observables for a series of nuclei using a Monte Carlo sampling for a single nucleus. The method is used to calculate nuclear…

核理论 · 物理学 2009-10-31 Y. Alhassid , S. Liu , H. Nakada

Recent results from several direct detection experiments have imposed severe constraints on the multi-GeV mass window for various dark matter (DM) models. However, many of these experiments are not sensitive to MeV scale DM as the…

高能物理 - 唯象学 · 物理学 2019-08-14 Debajyoti Choudhury , Divya Sachdeva

A method for measuring the spectrum of a density field by a discrete wavelet space-scale decomposition (SSD) has been studied. We show how the power spectrum can effectively be described by the father function coefficients (FFC) of the…

天体物理学 · 物理学 2007-05-23 Jesus Pando , Li-Zhi Fang

A new approach to study the response of portable gamma detector to terrestrial gamma ray is proposed. This approach is based on two-stage Monte Carlo simulation. First, the probability distributions of the phase space coordinates of the…

仪器与探测器 · 物理学 2015-06-09 Boubaker Askri

This work is the second part of a simulation study investigating the processing of densely packed and moving granular assemblies by positron emission particle tracking (PEPT). Since medical PET scanners commonly used for PEPT are very…

We introduce new smoothing estimators for complex signals on graphs, based on a recently studied Determinantal Point Process (DPP). These estimators are built from subsets of edges and nodes drawn according to this DPP, making up trees and…

Direct photon spectra are calculated within a transport+hydrodynamics hybrid approach, in which the high-density part of the transport evolution has been replaced by a 3+1-dimensional hydrodynamic calculation. We study the effects of…

核理论 · 物理学 2011-03-23 Bjoern Baeuchle , Marcus Bleicher

Spectral signatures of surface spots were recently discovered from high cadence observations of the A star Vega. We aim at constraining the surface distribution of these photospheric inhomogeneities, and investigating a possible short term…

太阳与恒星天体物理 · 物理学 2017-10-11 P. Petit , E. M. Hébrard , T. Böhm , C. P. Folsom , F. Lignières

We provide a both qualitative and quantitative comparison among different approaches aimed to solve the problem of non-linear diffusive acceleration of particles at shocks. In particular, we show that state-of-the-art models (numerical,…

高能天体物理现象 · 物理学 2015-03-17 D. Caprioli , Hyesung Kang , A. Vladimirov , T. W. Jones