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We investigate whether surface reconstruction order exists in stationary growing states, at all length scales or only below a crossover length, $l_{\rm rec}$. The later would be similar to surface roughness in growing crystal surfaces;…

统计力学 · 物理学 2009-11-07 Chen-Shan Chin , Marcel den Nijs

We perform a tomographic structure growth and expansion rate analysis using the monopole, quadrupole and hexadecapole of the redshift-space galaxy power spectrum derived from the Sloan Digital Sky Survey (SDSS-III) Baryon Oscillation…

宇宙学与河外天体物理 · 物理学 2019-01-16 Jinglan Zheng , Gong-Bo Zhao , Jian Li , Yuting Wang , Chia-Hsun Chuang , Francisco-Shu Kitaura , Sergio Rodriguez-Torres

We describe in detail and extend a recently introduced nonperturbative renormalization group (RG) method for surface growth. The scale invariant dynamics which is the key ingredient of the calculation is obtained as the fixed point of a RG…

统计力学 · 物理学 2009-10-31 C. Castellano , M. Marsili , M. A. Munoz , L. Pietronero

Recently, neural network (NN)-based image compression studies have actively been made and has shown impressive performance in comparison to traditional methods. However, most of the works have focused on non-scalable image compression…

图像与视频处理 · 电气工程与系统科学 2026-01-06 Jongmin Park , Jooyoung Lee , Munchurl Kim

Many biological and physical systems exhibit behaviour at multiple spatial, temporal or population scales. Multiscale processes provide challenges when they are to be simulated using numerical techniques. While coarser methods such as…

定量方法 · 定量生物学 2018-02-12 Cameron A. Smith , Christian A. Yates

Stochastic kriging has been widely employed for simulation metamodeling to predict the response surface of complex simulation models. However, its use is limited to cases where the design space is low-dimensional because, in general, the…

统计方法学 · 统计学 2022-09-16 Liang Ding , Xiaowei Zhang

Hybrid methods for simulating rarefied gas flows reduce computational cost by coupling a particle-based model, typically the direct simulation Monte Carlo (DSMC) method, to a continuum-based solver, i.e. a computational fluid dynamics (CFD)…

流体动力学 · 物理学 2026-04-28 Arshad Kamal , Arun K. Chinnappan , James R. Kermode , Duncan A. Lockerby

Higher-order numerical methods are used to find accurate numerical solutions to hyperbolic partial differential equations and equations of transport type. Limiting is required to either converge to the correct type of solution or to adhere…

数值分析 · 数学 2024-07-10 James Woodfield

We present a novel methodology that utilizes 4-Dimensional (4D) space deformation to simulate a magnification lens on versatile volume datasets and textured solid models. Compared with other magnification methods (e.g., geometric optics,…

图形学 · 计算机科学 2013-11-05 Bo Li , Xin Zhao , Hong Qin

Multidimensional scaling (MDS) is the act of embedding proximity information about a set of $n$ objects in $d$-dimensional Euclidean space. As originally conceived by the psychometric community, MDS was concerned with embedding a fixed set…

机器学习 · 统计学 2024-12-12 Michael W. Trosset , Carey E. Priebe

This paper proposes a novel three-dimensional (3D) theoretical regular-shaped geometry-based stochastic model (RS-GBSM) and the corresponding sum-of-sinusoids (SoS) simulation model for non-isotropic multiple-input multiple-output (MIMO)…

信号处理 · 电气工程与系统科学 2023-12-04 Yi Yuan , Cheng-Xiang Wang , Xiang Cheng , Bo Ai , David I. Laurenson

The single-correlator conformal bootstrap is solved numerically for several values of dimension 4>d>2 using the available SDPB and Extremal Functional methods. Critical exponents and other conformal data of low-lying states are obtained…

高能物理 - 理论 · 物理学 2019-02-20 Andrea Cappelli , Lorenzo Maffi , Satoshi Okuda

Aluminum alloys are increasingly utilized as lightweight materials in the automobile industry due to their superior capability in withstanding high mechanical loads. A significant challenge impeding the large-scale use of these alloys in…

计算工程、金融与科学 · 计算机科学 2022-03-31 Shiguang Deng , Carl Soderhjelm , Diran Apelian , Ramin Bostanabad

Reliability-based design optimization (RBDO) is traditionally formulated as a nested optimization and reliability problem. Although surrogate models are generally employed to improve efficiency, the approach remains computationally…

统计计算 · 统计学 2026-04-08 M. Moustapha , B. Sudret

The study of provable adversarial robustness has mostly been limited to classification tasks and models with one-dimensional real-valued outputs. We extend the scope of certifiable robustness to problems with more general and structured…

机器学习 · 计算机科学 2022-01-13 Aounon Kumar , Tom Goldstein

Visual data such as images and videos are typically modeled as discretizations of inherently continuous, multidimensional signals. Existing continuous-signal models attempt to exploit this fact by modeling the underlying signals of visual…

计算机视觉与模式识别 · 计算机科学 2022-10-17 Eric Nguyen , Karan Goel , Albert Gu , Gordon W. Downs , Preey Shah , Tri Dao , Stephen A. Baccus , Christopher Ré

Starting with a many-atom master equation of a kinetic, restricted solid-on-solid (KRSOS) model with external material deposition, we investigate nonlinear aspects of the passage to a mesoscale description for a crystal surface in 1+1…

介观与纳米尺度物理 · 物理学 2016-07-01 Joshua P. Schneider , Paul N. Patrone , Dionisios Margetis

In this paper we introduce a new sampling and reconstruction approach for multi-dimensional analog signals. Building on top of the Unlimited Sensing Framework (USF), we present a new folded sampling operator called the multi-dimensional…

信息论 · 计算机科学 2022-09-15 Dorian Florescu , Ayush Bhandari

We develop a multidimensional version of Gradient-MUSIC for estimating the frequencies of a nonharmonic signal from noisy samples. The guiding principle is that frequency recovery should be based only on the signal subspace determined by…

最优化与控制 · 数学 2026-03-31 Albert Fannjiang , Weilin Li

In clinical studies, questionnaires are often used to report disease-related manifestations from clinician and/or patient perspectives. Their analysis can help identify relevant manifestations throughout the disease course, enhancing…