Results 51 to 60 of about 9,228 (164)
Hybrid Metalens–Compressive Sensing Imaging System for Ultra‐Low‐Power Edge Detection
Nanophotonics, Volume 15, Issue 8, 24 April 2026.We propose an ultra‐low‐power edge detection imaging system through the combination of a spiral metalens and a compressive sensor. By moving the edge detection to a passive optical element, not only is the required power reduced but also the encoded edge image provides rich high‐frequency information, which provides high‐fidelity image reconstruction ...
Sejin Yoon +3 more
wiley +1 more source
Time Localization and Capacity of Faster-Than-Nyquist Signaling
, 2015 In this paper, we consider communication over the bandwidth limited analog white Gaussian noise channel using non-orthogonal pulses. In particular, we consider non-orthogonal transmission by signaling samples at a rate higher than the Nyquist rate. Using
Gattami, Ather +2 more
core +1 more source
Multichannel Sampling of Pulse Streams at the Rate of Innovation
, 2010 We consider minimal-rate sampling schemes for infinite streams of delayed and weighted versions of a known pulse shape. The minimal sampling rate for these parametric signals is referred to as the rate of innovation and is equal to the number of degrees ...
Eldar, Yonina C. +2 more
core +4 more sources
Spatio‐Temporal Diversity of Calcium Activity in Microglia
Glia, Volume 74, Issue 3, March 2026.Ca2+ activity mostly occurs in microglial processes and stays localized. When it spreads, it often shows a directional bias and is constrained by branch points. Activity strongly relies on P2Y12 receptors and is shaped by neuronal activity. ABSTRACT Microglia, the brain's innate immune cells, possess complex, highly motile branched processes. These act
Hiroshi Horiuchi +3 more
wiley +1 more source
Joint Transmit and Receive Filter Optimization for Sub-Nyquist Delay-Doppler Estimation
, 2018 In this article, a framework is presented for the joint optimization of the analog transmit and receive filter with respect to a parameter estimation problem. At the receiver, conventional signal processing systems restrict the two-sided bandwidth of the
Lenz, Andreas +2 more
core +1 more source
Magnetotelluric sampling theorem
Earth, Planets and SpaceWe consider a general case of a magnetotelluric (MT) study to reveal three-dimensional (3D) distribution of the electrical conductivity within the Earth based on measurements of electromagnetic (EM) fields by a two-dimensional (2D) array.
Hisashi Utada +2 more
doaj +1 more source
Compressed Sensing - A New mode of Measurement [PDF]
, 2017 After introducing the concept of compressed sensing as a complementary measurement mode to the classical Shannon-Nyquist approach, I discuss some of the drivers, potential challenges and obstacles to its implementation. I end with a
Vogt, Thomas
core
Journal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.Abstract This study investigates the variability of internal tides in the Arabian Sea from 2003 to 2019 using a three‐dimensional high‐resolution general ocean circulation model forced by realistic forcing. The model reveals their key generation sites including around Socotra Island, the Carlsberg Ridge, the Maldives, and the northeastern Arabian Sea ...
Jingyi Ma +5 more
wiley +1 more source
A Compressed Sensing-Based Wearable Sensor Network for Quantitative Assessment of Stroke Patients
Sensors, 2016 Clinical rehabilitation assessment is an important part of the therapy process because it is the premise for prescribing suitable rehabilitation interventions.
Lei Yu +3 more
doaj +1 more source
Energy Technology, Volume 14, Issue 1, January 2026.Electrode structuring can enhance the fast‐charging capability of lithium‐ion cells without compromising energy density. This study shows that conventional charge rate tests may obscure these benefits in transport‐limited electrodes due to lithium plating. Using structure calendering, structured anodes are fabricated and evaluated.
Josef Keilhofer +4 more
wiley +1 more source