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Adaptive finite elements are the method of choice for accurate simulations of optical components. However as shown recently by Bienstman et al. many finite element mode solvers fail to compute the propagation constant's imaginary part of a…

光学 · 物理学 2009-05-28 L. Zschiedrich , S. Burger , J. Pomplun , F. Schmidt

Segregation is a popular phenomenon. It has considerable effects on material performance. To the author's knowledge, there is still no automated objective quantitative indicator for segregation. In order to full fill this task, segregation…

计算机视觉与模式识别 · 计算机科学 2015-11-30 Ting Peng , Aiping Qu , Xiaoling Wang

Adaptive optics can be used to mitigate the effects of atmospheric turbulence on imaging systems, but the correction is only partial, and deconvolution is often required to improve the resolution. This results in entire optical/digital…

天体物理仪器与方法 · 物理学 2026-02-09 Florian Cheyssial , Laurent Mugnier , Cyril Petit

This paper describes a new model for an artificial neural network processing unit or neuron. It is slightly different to a traditional feedforward network by the fact that it favours a mechanism of trying to match the wave-like 'shape' of…

神经与进化计算 · 计算机科学 2014-03-06 Kieran Greer

Object detection is one of the most important and challenging branches of computer vision, which has been widely applied in peoples life, such as monitoring security, autonomous driving and so on, with the purpose of locating instances of…

计算机视觉与模式识别 · 计算机科学 2019-10-18 Licheng Jiao , Fan Zhang , Fang Liu , Shuyuan Yang , Lingling Li , Zhixi Feng , Rong Qu

Encyclopedic article covering shallow water wave models used in oceanography and atmospheric science. Sections: Definition of the Subject; Introduction and Historical Perspective; Completely Integrable Shallow Water Wave Equations; Shallow…

可精确求解与可积系统 · 物理学 2013-08-27 Willy Hereman

We present a novel approach to partial-wave unitarity that bypasses a lot of technical difficulties of previous approaches. In passing, we explicitly demonstrate that our approach provides a very suggestive form for the partial-wave…

高能物理 - 理论 · 物理学 2024-12-31 Konstantinos C. Rigatos , Bo Wang

We show a systematic construction for implementing general measurements on a single qubit, including both strong (or projection) and weak measurements. We mainly focus on linear optical qubits. The present approach is composed of simple and…

量子物理 · 物理学 2012-04-13 Yukihiro Ota , Sahel Ashhab , Franco Nori

Time reversal methods are widely used to achieve wave focusing in acoustics and electromagnetics. A typical time reversal experiment requires that a transmitter be initially present at the target focusing point, which limits the application…

混沌动力学 · 物理学 2016-05-11 Bo Xiao , Thomas M. Antonsen , Edward Ott , Steven M. Anlage

Research activities during the last decade have shown the strong potential of photonic devices to greatly simplify ground based and space borne astronomical instruments and to improve their performance. We focus specifically on the…

天体物理仪器与方法 · 物理学 2010-11-02 L. Labadie , O. Wallner

The advantages of mixed approach with using different kinds of programming techniques for symbolic manipulation are discussed. The main purpose of approach offered is merge the methods of object oriented programming that convenient for…

符号计算 · 计算机科学 2007-05-23 Alexander Yu. Vlasov

Many phenomena are described by bivariate signals or bidimensional vectors in applications ranging from radar to EEG, optics and oceanography. The time-frequency analysis of bivariate signals is usually carried out by analyzing two separate…

统计方法学 · 统计学 2016-09-09 Julien Flamant , Nicolas Le Bihan , Pierre Chainais

Automatic (i.e., computer-assisted) theorem proving (ATP) can come in many flavors. This document presents early steps in our effort towards defining object-oriented theorem proving (OOTP) as a new style of ATP. Traditional theorem proving…

编程语言 · 计算机科学 2019-02-28 Moez A. AbdelGawad

The partial least squares (PLS) is a popular modeling technique commonly used in social sciences. The traditional PLS algorithm deals with variables measured on interval scales while data are often collected on ordinal scales: a…

统计方法学 · 统计学 2012-12-21 Gabriele Cantaluppi

We describe an approach for segmenting an image into regions that correspond to surfaces in the scene that are partially surrounded by the medium. It integrates both appearance and motion statistics into a cost functional, that is seeded…

计算机视觉与模式识别 · 计算机科学 2011-09-23 Alper Ayvaci , Stefano Soatto

Waveform inversion seeks to estimate an inaccessible heterogeneous medium from data gathered by sensors that emit probing signals and measure the generated waves. It is an inverse problem for a second order wave equation or a first order…

数值分析 · 数学 2025-05-15 Liliana Borcea , Josselin Garnier , Alexander V. Mamonov , Jörn Zimmerling

This paper presents a systematic method for transforming states of polarization (SoPs) into any arbitrary target SoPs, whether linear or elliptical, by determining the precise waveplate rotation angles required for the transformation.…

光学 · 物理学 2025-01-28 Joong-Seon Choe , Chun Ju Youn

For any kind of wave phenomenon one can find ways to derive the respective dispersion relation from experimental observations and measurements. This dispersion relation determines the structure of the wave equation and thus characterizes…

流体动力学 · 物理学 2026-01-21 Gerd Leuchs , Mojdeh S. Najafabadi

A method for object classification that is based on distribution analysis is proposed. In addition, a method for finding relevant features and the unification of this algorithm with another classification algorithm is proposed. The…

机器学习 · 计算机科学 2021-11-09 Thomas Olschewski

In this note we describe experiments on an implementation of two methods proposed in the literature for computing regions that correspond to a notion of order statistics for multidimensional data. Our implementation, which works for any…

统计计算 · 统计学 2017-04-26 David L. Woodruff , Stefan Zillmann