Nonlinear Hamiltonian dynamics of Lagrangian transport and mixing in the ocean
, 2005 Methods of dynamical system's theory are used for numerical study of transport and mixing of passive particles (water masses, temperature, salinity, pollutants, etc.) in simple kinematic ocean models composed with the main Eulerian coherent structures in
Bower +20 more
core +1 more source
Structural Health Monitoring from the Window Seat of a Passenger Airplane [PDF]
, 2017 Recent advances in computer vision and graphics have shown that regular, monocular cameras and video (e.g. cell phone cameras and Digital SLRs) can be used to identify the resonant frequencies of structures, and even image visually subtle operational ...
Buyukozturk, Oral +4 more
core +1 more source
Sparsity in Dynamics of Spontaneous Subtle Emotions: Analysis \& Application
, 2016 Spontaneous subtle emotions are expressed through micro-expressions, which are tiny, sudden and short-lived dynamics of facial muscles; thus poses a great challenge for visual recognition.
Ngo, Anh Cat Le +2 more
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Reduced order modelling of air‐puff test for corneal material characterisation
Journal of Microscopy, EarlyView.Abstract Models of the fluid–structure interaction (FSI) model for the air‐puff test were analysed. Using Abaqus, the air‐puff test is applied to eyes with varying biomechanical parameters, such as material properties, corneal thickness, and radius.
Osama M. Maklad, Muting Hao
wiley +1 more source
Heart Rate Variability Extraction From Videos Signals: ICA vs. EVM Comparison
IEEE Access, 2017 Medical researchers have always been interested in heart rate (HR) and heart rate variability (HRV) analysis. However, nowadays, investigators from a variety of other fields are also probing the subject.
Karim Alghoul +3 more
doaj +1 more source
Micro-expression Recognition using Spatiotemporal Texture Map and Motion Magnification [PDF]
, 2018 Micro-expressions are short-lived, rapid facial expressions that are exhibited by individuals when they are in high stakes situations. Studying these micro-expressions is important as these cannot be modified by an individual and hence offer us a peek ...
Pawar, Shashank Shivaji
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H2B: Heartbeat-based Secret Key Generation Using Piezo Vibration Sensors
, 2019 We present Heartbeats-2-Bits (H2B), which is a system for securely pairing wearable devices by generating a shared secret key from the skin vibrations caused by heartbeat. This work is motivated by potential power saving opportunity arising from the fact
Hassan, Mahbub +6 more
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The 2nd competition on counter measures to 2D face spoofing attacks [PDF]
, 2013 Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works ...
Ahmad, Iftikhar +34 more
core +3 more sources
Asymmetry of the Ferroelectric Phase Transition in BaTiO3
Advanced Materials, Volume 38, Issue 25, 4 May 2026.Phase transitions are typically assumed to behave identically in forward and reverse. This work shows that in the ferroelectric material barium titanate this is not true: heating drives an abrupt, first‐order jump, while cooling gives a smooth, continuous change.
Asaf Hershkovitz +14 more
wiley +1 more source
Defocusing digital particle image velocimetry and the three-dimensional characterization of two-phase flows [PDF]
, 2002 Defocusing digital particle image velocimetry (DDPIV) is the natural extension of planar PIV techniques to the third spatial dimension. In this paper we give details of the defocusing optical concept by which scalar and vector information can be ...
Gharib, Morteza, Pereira, Francisco
core +1 more source