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Transformers have rapidly gained popularity in computer vision, especially in the field of object recognition and detection. Upon examining the outcomes of state-of-the-art object detection methods, we noticed that transformers consistently…

Computer Vision and Pattern Recognition · Computer Science 2023-09-12 Aref Miri Rekavandi , Shima Rashidi , Farid Boussaid , Stephen Hoefs , Emre Akbas , Mohammed bennamoun

Magneto-mechanical transmitters offer a compact and low-power solution for the generation of ultra-low frequency (ULF) magnetic signals for through-ground and through-seawater communications. Resonant arrays of smaller magneto-mechanical…

Applied Physics · Physics 2023-04-19 Jiheng Jing , Sameh Tawfick , Gaurav Bahl

This is our response to a comment by Walter Eifler on our paper `A simple model for the short-time evolution of near-surface current and temperature profiles' (arXiv:physics/0503186, accepted for publication in Deep-Sea Research II).…

Atmospheric and Oceanic Physics · Physics 2009-11-11 Alastair D. Jenkins , Brian Ward

The problem of estimating the eddy diffusivity from Lagrangian observations in the presence of measurement error is studied in this paper. We consider a class of incompressible velocity fields for which is can be rigorously proved that the…

Mathematical Physics · Physics 2009-05-01 C. J. Cotter , G. A. Pavliotis

Physicochemical characterization of materials is central to the field of science and engineering and is essential to design new/engineered materials with specific properties. Assays available for small-molecules, e.g., XRD, NMR, LC-MS,…

The electromagnetic scattering resonances of a non-magnetic object much smaller than the incident wavelength in vacuum can be either described by the electroquasistatic approximation of the Maxwell's equations if its permittivity is…

Mesoscale and Nanoscale Physics · Physics 2020-11-11 Carlo Forestiere , Giovanni Miano , Guglielmo Rubinacci

A flexible and low-cost device for eddy current non-destructive testing made of off-the-shelf components is described. The proposed system is compact and easy to operate, and it consists of a dual H-bridge stepper motor driver, a coil…

Signal Processing · Electrical Eng. & Systems 2021-02-24 Hamed Malekmohammadi , Andrea Migali , Stefano Laureti , Marco Ricci

Extensive research papers of three-dimensional computational techniques are widely used for the investigation of human brain pathophysiology. Eddy current analyzing could provide an indication of conductivity change within a biological…

Medical Physics · Physics 2019-06-05 Wuliang Yin , Mingyang Lu , Jiawei Tang , Qian Zhao , Zhijie Zhang , Kai Li , Yan Han , Anthony Peyton

Modern diffusion MRI sequences commonly acquire a large number of volumes with diffusion sensitization gradients of differing strengths or directions. Such sequences rely on echo-planar imaging (EPI) to achieve reasonable scan duration.…

Image and Video Processing · Electrical Eng. & Systems 2025-06-06 Antoine Legouhy , Ross Callaghan , Whitney Stee , Philippe Peigneux , Hojjat Azadbakht , Hui Zhang

Elastic wave propagation is intrinsically sensitive to the mechanical properties of the medium through which it travels. In soft elastomers, this makes guided elastic waves natural probes of viscoelastic and acoustoelastic behavior over a…

Soft Condensed Matter · Physics 2026-05-01 Samuel Croquette , Pierre Chantelot , Daniel A. Kiefer , Claire Prada , Fabrice Lemoult

Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. An directional eddy-current (EC) probe with asymmetric transmit and…

Instrumentation and Detectors · Physics 2024-10-22 Meirbek Mussatayev , Qiuji Yi , Mark Fitzgerald , Vincent K. Maes , Paul Wilcox , Robert Hughes

Transmission electron diffraction is a powerful and versatile structural probe for the characterization of a broad range of materials, from nanocrystalline thin films to single crystals. With recent developments in fast electron detectors…

Materials Science · Physics 2021-10-06 Jian-Min Zuo , Renliang Yuan , Yu-Tsun Shao , Haw-Wen Hsiao , Saran Pidaparthy , Yang Hu , Qun Yang , Jiong Zhang

Low-shot object counting addresses estimating the number of previously unobserved objects in an image using only few or no annotated test-time exemplars. A considerable challenge for modern low-shot counters are dense regions with small…

Computer Vision and Pattern Recognition · Computer Science 2025-12-24 Grega Šuštar , Jer Pelhan , Alan Lukežič , Matej Kristan

Despite its several qualities, the Poggio-Miller-Chang-Harrington-Wu-Tsai (PMCHWT) formulation for simulating scattering by dielectric media suffers from numerical instabilities and severe ill-conditioning at low frequencies. While this…

Computational Physics · Physics 2020-04-22 Tiffany L. Chhim , John E. Ortiz , Lyes Rahmouni , Adrien Merlini , Francesco P. Andriulli

The vast number of existing IP cameras in current road networks is an opportunity to take advantage of the captured data and analyze the video and detect any significant events. For this purpose, it is necessary to detect moving vehicles, a…

Computer Vision and Pattern Recognition · Computer Science 2021-05-19 Iván García , Rafael Marcos Luque , Ezequiel López

State-of-the-art Object Detection (OD) methods predominantly operate under a closed-world assumption, where test-time categories match those encountered during training. However, detecting and localizing unknown objects is crucial for…

Computer Vision and Pattern Recognition · Computer Science 2025-06-18 Daniel Montoya , Aymen Bouguerra , Alexandra Gomez-Villa , Fabio Arnez

Deep-learning recently show great success across disciplines yet conventionally require time-consuming computer processing or bulky-sized diffractive elements. Here we theoretically propose and experimentally demonstrate a purely-passive…

Neural and Evolutionary Computing · Computer Science 2021-01-27 Jingkai Weng , Yujiang Ding , Chengbo Hu , Xue-feng Zhu , Bin Liang , Jing Yang , Jianchun Cheng

In this study, four different techniques are presented. 1 Rectangular waveguide measurement technique for normal microwave materials microwave properties such as permeability and permittivity. This technique removed guess parameter and…

Instrumentation and Detectors · Physics 2009-06-17 Mahmut Obol

Here we discuss the theory and analyze in detail the guidance properties of linear arrays of metamaterial/plasmonic small particles as nano-scale optical nanotransmission lines, including the effect of material loss. Under the assumption of…

Optics · Physics 2007-07-04 Andrea Alu , Nader Engheta

This paper presents a new time-domain finite-element approach for modelling thin sheets with hyperbolic basis functions derived from the well-known steady-state solution of the linear flux diffusion equation. The combination of solutions at…

Numerical Analysis · Mathematics 2022-01-05 Bruno de Sousa Alves , Ruth V. Sabariego , Marc Laforest , Frédéric Sirois