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In this article, we consider the problem of finding the support of an inhomogenous possibly anisotropic inclusion in a background of constant electric conductivity from the electrical impedance tomography data at the boundary of a bounded…

泛函分析 · 数学 2007-05-23 Erkki J. Somersalo

Deviations in respiratory rate often precede abnormalities in other vital signs. However, continuously monitoring respiratory rates outside clinical settings remains challenging due to the obtrusive nature and sensitivity to body motions in…

信号处理 · 电气工程与系统科学 2024-11-15 Sebastian Reidy , Manuel Meier , Christian Holz

In this paper, we study the traveling wave solutions to the density-suppressed motility model describing the ``self-trapping'' mechanism that induces spatio-temporal pattern formations observed in the experiment. We establish the existence…

偏微分方程分析 · 数学 2020-06-24 Jing Li , Zhi-An Wang

Inspiral signals from binary black holes, in particular those with masses in the range $10M_\odot \lsim M \lsim 1000 M_\odot,$ may last for only a few cycles within a detector's most sensitive frequency band. The spectrum of a…

广义相对论与量子宇宙学 · 物理学 2015-03-13 D. J. A. McKechan , C. Robinson , B. S. Sathyaprakash

This paper presents a method that estimates the respiratory rate based on the frame capturing of wireless local area networks. The method uses beamforming feedback matrices (BFMs) contained in the captured frames, which is a rotation matrix…

信号处理 · 电气工程与系统科学 2022-03-04 T. Kanda , T. Sato , H. Awano , S. Kondo , K. Yamamoto

In finite-volume-based flow simulations, absorbing layers are widely used to reduce pressure wave reflections at boundaries of the computational domain. A disadvantage of absorbing layers is that they contain case-dependent parameters; thus…

流体动力学 · 物理学 2017-11-29 Robinson Perić

We propose a travelling-wave perturbation method to control the spatiotemporal dynamics in a cardiac model. It is numerically demonstrated that the method can successfully suppress the wave instability (alternans in action potential…

组织与器官 · 定量生物学 2009-11-10 Peng-Ye Wang , Ping Xie , Hua-Wei Yin

Internal waves propagate obliquely through a stratified fluid with an angle that is fixed with respect to gravity. Upon reflection on a sloping bed, striking phenomena are expected to occur close to the slope. We present here laboratory…

斑图形成与孤子 · 物理学 2009-11-11 Louis Gostiaux , Thierry Dauxois , Henri Didelle , Joel Sommeria , Samuel Viboud

A new wave energy device features a submerged ballasted air bag connected at the top to a rigid float. Under wave action, the bag expands and contracts, creating a reciprocating air flow through a turbine between the bag and another volume…

流体动力学 · 物理学 2017-06-21 A. Kurniawan , J. R. Chaplin , M. R. Hann , D. M. Greaves , F. J. M. Farley

This paper is concerned with a conceptual gesture-based instruction/input technique using electromagnetic wave detection. The gestures are modelled as the shapes of some impenetrable or penetrable scatterers from a certain admissible class,…

偏微分方程分析 · 数学 2017-08-10 Jingzhi Li , Hongyu Liu , Hongpeng Sun

The main objective of this paper is to propose an alternative procedure to carry out one of the key steps of immersion and invariance stabilising controller design. Namely, the one that ensures attractivity of the manifold whose internal…

系统与控制 · 计算机科学 2016-11-18 Lei Wang , Fulvio Forni , Romeo Ortega , Hongye Su

The standing surface waves in a rectangular vertically oscillating vessel filled with water (Faraday waves) in the presence of a floating elastic sheet are studied experimentally and theoretically. The threshold amplitude of the instability…

流体动力学 · 物理学 2023-07-11 Vahideh Sardari , Leila Bahmani , Maniya Maleki

Wavefront shaping is a technique for directing light through turbid media. The theoretical aspects of wavefront shaping are well understood, and under near-ideal experimental conditions, accurate predictions for the expected signal…

光学 · 物理学 2024-07-01 Bahareh Mastiani , Daniël W. S. Cox , Ivo M. Vellekoop

Acoustic traps are used to capture and handle suspended microparticles and cells in microfluidic applications. A particular simple and much-used acoustic trap consists of a commercially available, millimeter-sized, liquid-filled glass…

流体动力学 · 物理学 2017-08-30 Mikkel W. H. Ley , Henrik Bruus

In this paper we attempt to present some questions with respect to the approach used in some brazilian mid-level textbooks on the topic of stationary sound waves in tubes. In addition to ranking the textbooks within a set of criteria, we…

物理教育 · 物理学 2013-08-06 L. P. Vieira , D. F. Amaral , V. O. M. Lara

This paper proposes a weakly-supervised machine learning-based approach aiming at a tool to alert patients about possible respiratory diseases. Various types of pathologies may affect the respiratory system, potentially leading to severe…

声音 · 计算机科学 2023-12-05 Michele Cozzatti , Federico Simonetta , Stavros Ntalampiras

We use holography to derive effective theories of fluctuations in spontaneously broken phases of systems with finite temperature, chemical potential, magnetic field and momentum relaxation in which the order parameters break translations.…

高能物理 - 理论 · 物理学 2021-06-16 Aristomenis Donos , Christiana Pantelidou , Vaios Ziogas

Internal waves are an important feature of stratified fluids, both in oceanic and lake basins and in other settings. Many works have been published on the generic feature of internal wave trapping onto planar wave attractors and…

流体动力学 · 物理学 2026-04-01 Nimrod Bratspiess , Eyal Heifetz , Leo R. M. Maas

We show that the bulk winding number characterizing one-dimensional topological insulators with chiral symmetry can be detected from the displacement of a single particle, observed via losses. Losses represent the effect of repeated weak…

介观与纳米尺度物理 · 物理学 2017-05-17 Tibor Rakovszky , Janos K. Asboth , Andrea Alberti

Optical and acoustical trapping has been established as a tool for holding and moving microscopic particles suspended in a liquid in a contact-free and non-invasive manner. Opposed to standard microscopic imaging where the probe is fixated,…

数值分析 · 数学 2025-10-27 Peter Elbau , Monika Ritsch-Marte , Otmar Scherzer , Denise Schmutz