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The structure of a polystyrene matrix filled with tightly cross-linked polystyrene nanoparticles, forming an athermal nanocomposite system, is investigated by means of a Monte Carlo sampling formalism. The polymer chains are represented as…

软凝聚态物质 · 物理学 2014-01-17 Georgios G. Vogiatzis , Evangelos Voyiatzis , Doros N. Theodorou

A detailed simulation of vertical showers in atmosphere produced by primary gammas and protons, in the energy range 1-100 TeV, has been performed by means of the FLUKA Monte Carlo code, with the aim of studying the time structure of the…

天体物理学 · 物理学 2009-10-30 G. Battistoni , M. Carboni , A. Ferrari , V. Patera

We propose novel scale-invariant error estimators for the Monte Carlo and multilevel Monte Carlo estimation of mean and variance. For any linear transformation of the distribution of the quantity of interest, the computation cost across…

数值分析 · 数学 2025-12-09 Sharana Kumar Shivanand , Bojana Rosić

The structure of lamellar phases of symmetric $AB$ diblock copolymers in a thin film is investigated. We quantitatively compare the composition profiles and profiles of individual segments in self-consistent field calculations with Monte…

统计力学 · 物理学 2009-10-31 Thorsten Geisinger , Marcus Mueller , Kurt Binder

Issues relating to extensive air showers observation by a space-borne fluorescence detector and the effects of clouds on the observations are investigated using Monte Carlo simulation. The simulations assume the presence of clouds with…

天体物理学 · 物理学 2009-11-10 T. Abu-Zayyad , C. C. H. Jui , E. C. Loh

An extensive 3-dimensional Monte Carlo calculation of the atmospheric neutrino flux is in progress with the FLUKA Monte Carlo code. The results are compared to those obtained under the 1-dimensional approximation, where secondary particles…

高能物理 - 唯象学 · 物理学 2008-11-26 G. Battistoni , A. Ferrari , P. Lipari , T. Montaruli , P. R. Sala , T. Rancati

Colloidal droplets are used in a variety of practical applications. Some of these applications require particles of different sizes. These include medical diagnostic methods, the creation of photonic crystals, the formation of…

软凝聚态物质 · 物理学 2024-04-04 P. A. Zolotarev , K. S. Kolegov

The smoothing distribution is the conditional distribution of the diffusion process in the space of trajectories given noisy observations made continuously in time. It is generally difficult to sample from this distribution. We use the…

概率论 · 数学 2025-03-07 Oskar Eklund , Annika Lang , Moritz Schauer

We describe an MCMC method for sampling distributions with soft constraints, which are constraints that are almost but not exactly satisfied. We sample a total distribution that is a convex combination of the target soft distribution with…

统计计算 · 统计学 2022-10-24 Ildebrando Magnani

Random-walk Monte Carlo simulations are widely used to predict the optical properties of complex, disordered materials. In presence of large heterogeneities (e.g., spatially-extended nonscattering regions in a turbid environment), an…

光学 · 物理学 2025-04-10 Loïc Tran , Benjamin Askenazi , Kevin Vynck

Skin lesion segmentation can be rather a challenging task owing to the presence of artifacts, low contrast between lesion and boundary, color variegation, fuzzy skin lesion borders and heterogeneous background in dermoscopy images. In this…

图像与视频处理 · 电气工程与系统科学 2020-10-09 Zanobya N. Khan

Several physics methods for the simulation of the photoelectric effect are quantitatively evaluated with respect to a large collection of experimental data retrieved from the literature. They include theoretical and empirical calculations…

Upcoming astronomical surveys will observe billions of galaxies across cosmic time, providing a unique opportunity to map the many pathways of galaxy assembly to an incredibly high resolution. However, the huge amount of data also poses an…

天体物理仪器与方法 · 物理学 2022-11-08 Bingjie Wang , Joel Leja , Ashley Villar , Joshua S. Speagle

The statistical mechanics of phase transitions in dense systems of polydisperse particles presents distinctive challenges to computer simulation and analytical theory alike. The core difficulty, namely dealing correctly with particle size…

软凝聚态物质 · 物理学 2013-09-03 Nigel B. Wilding , Peter Sollich

Monte Carlo approaches to radiation transport have several attractive properties such as simplicity of implementation, high accuracy, and good parallel scaling. Moreover, Monte Carlo methods can handle complicated geometries and are…

太阳与恒星天体物理 · 物理学 2015-06-04 Ernazar Abdikamalov , Adam Burrows , Christian D. Ott , Frank Löffler , Evan O'Connor , Joshua C. Dolence , Erik Schnetter

Machine learning techniques can reveal hidden structure in large data amounts and can potentially extent or even replace analytical scientific methods. In nanophotonics, modes can increase the light yield from emitters located inside the…

光学 · 物理学 2018-10-02 Carlo Barth , Christiane Becker

Monte Carlo simulations are a crucial tool for the analysis and prediction of various background components in liquid xenon (LXe) detectors. With improving shielding in new experiments, the simulation of external backgrounds, such as…

仪器与探测器 · 物理学 2021-03-31 S. Bruenner , A. P. Colijn , M. P. Decowski , O. V. Kesber

Microscopic processes on surfaces such as adsorption, desorption, diffusion and reaction of interacting particles can be simulated using kinetic Monte Carlo (kMC) algorithms. Even though kMC methods are accurate, they are computationally…

数学物理 · 物理学 2013-12-24 Yannis Pantazis , Markos Katsoulakis

The phase diagram of soft spheres with size dispersion has been studied by means of an optimized Monte Carlo algorithm which allows to equilibrate below the kinetic glass transition for all sizes distribution. The system ubiquitously…

软凝聚态物质 · 物理学 2007-05-23 L. A. Fernandez , V. Martin-Mayor , P. Verrocchio

We have used a Monte Carlo radiative transfer code to produce edge-on images of dusty galactic disks, allowing a fraction of the dust to be distributed in clumps. Synthetic images of edge-on galaxies have been constructed for different…

天体物理学 · 物理学 2009-11-07 A. Misiriotis , S. Bianchi