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We suggest the numerical approach to detect eigenfrequencies of trapped modes in waveguides or guided waves in diffraction gratings. At the same time, the approach works perfectly for computation of systems with finitely many scattering…

Quantum Physics · Physics 2007-05-23 Valery E. Grikurov

When a binary fluid demixes under a slow temperature ramp, nucleation, coarsening and sedimentation of droplets lead to an oscillatory evolution of the phase separating system. The advection of the sedimenting droplets is found to be…

Fluid Dynamics · Physics 2012-05-31 Tobias Lapp , Martin Rohloff , Jürgen Vollmer , Björn Hof

Structural health monitoring is a condition-based field of study utilised to monitor infrastructure, via sensing systems. It is therefore used in the field of aerospace engineering to assist in monitoring the health of aerospace structures.…

Machine Learning · Computer Science 2018-12-13 Prasad Cheema , Nguyen Lu Dang Khoa , Moray Kidd , Gareth A. Vio

This paper addresses the trajectory-tracking problem for a class of electromechanical systems. To this end, the dynamics of the plants are modeled in the so-called port-Hamiltonian framework. Then, the notion of contraction is exploited to…

Systems and Control · Electrical Eng. & Systems 2023-11-14 Najmeh Javanmardi , Pablo Borja , Jacquelien M. A. Scherpen

A particle tracking velocimetry apparatus is presented that is capable of measuring three-dimensional particle trajectories across large volumes, of the order of several meters, during natural snowfall events. Field experiments, aimed at…

Fluid Dynamics · Physics 2023-04-12 Nathaniel Bristow , Jiaqi Li , Peter Hartford , Michele Guala , Jiarong Hong

Advances in astronomy are often enabled by adoption of new technology. In some instances this is where the technology has been invented specifically for astronomy, but more usually it is adopted from another scientific or industrial area of…

Instrumentation and Methods for Astrophysics · Physics 2015-06-05 C. R. Cunningham , C. J. Evans , F. Molster , S. Kendrew , M. A. Kenworthy , F. Snik

The purpose of this project is to build a system that will quickly track the location of a stolen vehicle, thereby reducing the cost and effort of police. Moreover, the vehicle's computer system can be controlled remotely by the owners of…

Robotics · Computer Science 2021-02-03 Hasan Naji , Iuliana Marin , Nicolae Goga , Cristian Taslitschi

A new concept devoted to sensing the depolarization strength of materials from a single measurement is proposed and successfully validated on a variety of samples. It relies on the measurement of the orthogonality breaking between two…

Optics · Physics 2015-06-04 Julien Fade , Mehdi Alouini

Visual Object tracking research has undergone significant improvement in the past few years. The emergence of tracking by detection approach in tracking paradigm has been quite successful in many ways. Recently, deep convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2017-11-23 Litu Rout , Sidhartha , Gorthi R. K. S. S. Manyam , Deepak Mishra

Urban-oriented autonomous vehicles require a reliable perception technology to tackle the high amount of uncertainties. The recently introduced compact 3D LIDAR sensor offers a surround spatial information that can be exploited to enhance…

Computer Vision and Pattern Recognition · Computer Science 2018-04-24 Achim Kampker , Mohsen Sefati , Arya Abdul Rachman , Kai Kreisköther , Pascual Campoy

This paper presents a visual tracking system that is capable or running real time on-board a small UAV (Unmanned Aerial Vehicle). The tracking system is computationally efficient and invariant to lighting changes and rotation of the object…

Robotics · Computer Science 2012-05-28 Ashraf Qadir , William Semke , Jeremiah Neubert

Gaze tracking is an important technology as the system can give information about a person from what and where the person is seeing. There have been many attempts to make robust and accurate gaze trackers using either monitor or wearable…

Human-Computer Interaction · Computer Science 2017-08-04 Eunji Chong , Christian Nitschke , Atsushi Nakazawa , Agata Rozga , James M. Rehg

Accurately measuring mechanical displacements is essential for a vast portion of current technologies. Several optical techniques accomplish this task, allowing for non-contact sensing even below the diffraction limit. Here we introduce an…

Transformation optics (TO) is a new tool for controlling electromagnetic fields. In the context of metamaterial technology, it provides a direct link between a desired electromagnetic (EM) phenomenon and the material response required for…

In this paper, an online adaptive model-free tracker is proposed to track single objects in video sequences to deal with real-world tracking challenges like low-resolution, object deformation, occlusion and motion blur. The novelty lies in…

Computer Vision and Pattern Recognition · Computer Science 2017-12-12 Tanushri Chakravorty , Guillaume-Alexandre Bilodeau , Eric Granger

In traffic management, it is a very important issue to shorten the response time by detecting the incidents (accident, vehicle breakdown, an object falling on the road, etc.) and informing the corresponding personnel. In this study, an…

Computer Vision and Pattern Recognition · Computer Science 2021-04-29 Murat Tulgaç , Enes Yüncü , Mohamad-Alhaddad , Ceylan Yozgatlıgil

This paper investigates the effects that perturbations to an optical system, such as translations or rotations of the optical elements, have on the final location where a light ray strikes a detector. Symmetry arguments are employed to give…

Physics Education · Physics 2007-05-23 Jason H. Steffen

We present a method to capture the 7-dimensional light field structure, and translate it into perceptually-relevant information. Our spectral cubic illumination method quantifies objective correlates of perceptually relevant diffuse and…

Graphics · Computer Science 2023-03-22 Cehao Yu , Maarten Wijntjes , Elmar Eisemann , Sylvia Pont

We describe a low-cost system designed to monitor wander in digital clocks with a precision of $\le$ 1 ps. With this system we have shown that it is possible to track phase variations at the sub-picosecond level by adding noise to a…

Instrumentation and Detectors · Physics 2023-03-24 Rohith Saradhy , Erich Frahm , Eduardo B. S. Mendes , Roger Rusack

We propose a novel unifying approach to study the shadowing property for a broad class of dynamical systems (in particular, discontinuous and non-invertible) under a variety of perturbations. In distinction to known constructions, our…

Dynamical Systems · Mathematics 2023-01-03 Michael Blank
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