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This paper describes, in detail, techniques for measuring the Hurst parameter. Measurements are given on artificial data both in a raw form and corrupted in various ways to check the robustness of the tools in question. Measurements are…

统计理论 · 数学 2007-06-13 Richard G. Clegg

A rigorous mathematical model and an efficient computational method are proposed to solving the inverse elastic surface scattering problem which arises from the near-field imaging of periodic structures. We demonstrate how an enhanced…

偏微分方程分析 · 数学 2017-12-08 Huaian Diao , Peijun Li , Xiaokai Yuan

Historically, spectroscopic techniques have been essential for studying the optical properties of thin solid films. However, existing formulae for both normal transmission and reflection spectroscopy often rely on simplified theoretical…

In this work, we develop a framework for shape analysis using inconsistent surface mapping. Traditional landmark-based geometric morphometrics methods suffer from the limited degrees of freedom, while most of the more advanced non-rigid…

计算几何 · 计算机科学 2020-10-30 Gary P. T. Choi , Di Qiu , Lok Ming Lui

We construct flat metrics in a given conformal class with prescribed singularities of real orders at marked points of a closed real surface. The singularities can be small conical, cylindrical, and large conical with possible translation…

微分几何 · 数学 2011-01-13 Sergiu Moroianu

Contact angle is an essential physical quantity that characterizes the wettability of a substrate. Although it is widely used in the studies of surface wetting, capillary phenomena and moving contact lines, measuring contact angles in…

流体动力学 · 物理学 2022-02-15 Yangsha Liu , Yichen Yao , Quanying Li , Binghai Wen

Measuring the accuracy of face recognition (FR) systems is essential for improving performance and ensuring responsible use. Accuracy is typically estimated using large annotated datasets, which are costly and difficult to obtain. We…

计算机视觉与模式识别 · 计算机科学 2025-02-24 Manuel Knott , Ignacio Serna , Ethan Mann , Pietro Perona

Complexity is a multi-faceted phenomenon, involving a variety of features including disorder, nonlinearity, and self-organisation. We use a recently developed rigorous framework for complexity to understand measures of complexity. We…

适应与自组织系统 · 物理学 2020-09-22 Karoline Wiesner , James Ladyman

A flat Universe model supported by recent observations has 18 possible choices for its overall topology. To detect or exclude these possibilities is one of the most important tasks in modern cosmology, but it has been very difficult for…

宇宙学与河外天体物理 · 物理学 2015-05-30 Hirokazu Fujii

We explore the following problem: given a collection of creases on a piece of paper, each assigned a folding direction of mountain or valley, is there a flat folding by a sequence of simple folds? There are several models of simple folds;…

The paper reviews two prominent approaches for the measurement of technological complexity: the method of reflection and the assessment of technologies' combinatorial difficulty. It discusses their central underlying assumptions and…

应用统计 · 统计学 2018-03-12 Tom Broekel

Most of the reflectometry methods which are used for determining the phase of complex reflection coefficient such as reference method and Variation of Surroundings medium are based on solving the Schr\"odinger equation using a discontinuous…

材料科学 · 物理学 2012-04-27 S. S. Jahromi , S. F. Masoudi

In this chapter, a statistical measure of complexity is introduced and some of its properties are discussed. Also, some straightforward applications are shown.

适应与自组织系统 · 物理学 2010-09-09 Ricardo Lopez-Ruiz , Hector Mancini , Xavier Calbet

Gradient, chemically modified, flat surfaces enable directed transport of droplets. Calculation of apparent contact angles inherent for gradient surfaces is challenging even for atomically flat ones. Wetting of gradient, flat solid surfaces…

流体动力学 · 物理学 2018-01-16 Edward Bormashenko

A novel hand-eye calibration method for ground-observing mobile robots is proposed. While cameras on mobile robots are common, they are rarely used for ground-observing measurement tasks. Laser trackers are increasingly used in robotics for…

机器人学 · 计算机科学 2026-04-01 Jan Andre Rudolph , Dennis Haitz , Markus Ulrich

In this paper, we are concerned with the problem of creating flattening maps of simply-connected open surfaces in $\mathbb{R}^3$. Using a natural principle of density diffusion in physics, we propose an effective algorithm for computing…

计算几何 · 计算机科学 2020-02-10 Gary P. T. Choi , Chris H. Rycroft

A radically new approach to surface probing based on a replacement of the solid-state near-field probes by the 'long-field' ones is presented and discussed. Such probes may enable to create a radically new generation microscopes with…

其他凝聚态物理 · 物理学 2007-05-23 S. G. Gevorgyan , M. G. Azaryan

In this paper, we have proposed a simple method of measuring the density of a solid material. We have utilized the pressure sensor of a smartphone as a pressure-measuring device. By measuring the values of pressure when a solid object is in…

物理教育 · 物理学 2026-05-12 Sanjoy Kumar Pal , Soumen Sarkar , Pradipta Panchadhyayee

Bilayer plates are compound materials that exhibit large bending deformations when exposed to environmental changes that lead to different mechanical responses in the involved materials. In this article a new numerical method which is…

数值分析 · 数学 2020-04-02 Sören Bartels , Christian Palus

The traditional wisdom for achieving transparency is to minimize disordered scattering within and on the surface of materials, so as to avoid translucency. However, the lack of disordered scattering also deprives the possibility of…

光学 · 物理学 2023-04-04 Hongchen Chu , Xiang Xiong , Nicholas X. Fang , Feng Wu , Runqi Jia , Ruwen Peng , Mu Wang , Yun Lai