Results 91 to 100 of about 115,523 (316)

Pattern formation and spatial correlation induced by the noise in two competing species [PDF]

open access: yes, 2004
We analyze the spatio-temporal patterns of two competing species in the presence of two white noise sources: an additive noise acting on the interaction parameter and a multiplicative noise which affects directly the dynamics of the species densities. We
Fiasconaro, A.   +2 more
core   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

open access: yesAdvanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus   +9 more
wiley   +1 more source

SAR image denoising method based on sparse representation

open access: yesThe Journal of Engineering, 2019
The coherent nature of radar illumination causes the speckle effect, which gives the synthetic aperture radar (SAR) image its noisy appearance. The probability distribution of speckle noise is multiplicative rather than additive, which makes the ...
Hao-Tian Zhou   +3 more
doaj   +1 more source

A Second-Order Stochastic Leap-Frog Algorithm for Langevin Simulation [PDF]

open access: yes, 2000
Langevin simulation provides an effective way to study collisional effects in beams by reducing the six-dimensional Fokker-Planck equation to a group of stochastic ordinary differential equations.
Habib, Salman, Qiang, Ji
core   +2 more sources

A Variational Model for Removing Multiple Multiplicative Noises

open access: yesOpen Journal of Applied Sciences, 2015
The problem of multiplicative noise removal has been widely studied in recent years. Many methods have been used to remove it, but the final results are not very excellent. The total variation regularization method to solve the problem of the noise removal can preserve edge well, but sometimes produces undesirable staircasing effect.
Xuegang Hu, Yan Hu
openaire   +2 more sources

PiP‐Plex: A Particle‐in‐Particle System for Multiplexed Quantification of Proteins Secreted by Single Cells

open access: yesAdvanced Materials, EarlyView.
Detecting proteins secreted by a single cell while retaining its viability remains challenging. A particles‐in‐particle (PiPs) system made by co‐encapsulating barcoded microparticles (BMPs) with a single cell inside an alginate hydrogel particle is introduced.
Félix Lussier   +10 more
wiley   +1 more source

Analyzing multiplicative noise effects on Manakov's model via the new extended direct algebraic method

open access: yesResults in Engineering
This paper investigates the impact of multiplicative noise on the stochastic Manakov's model, which serves as a core framework in nonlinear optics and fibre communication systems.
Muhammad Idrees Afridi, Shabbir Hussain
doaj   +1 more source

Transistor‐Level Activation Functions via Two‐Gate Designs: From Analog Sigmoid and Gaussian Control to Real‐Time Hardware Demonstrations

open access: yesAdvanced Materials, EarlyView.
Screen gate‐based transistors are presented, enabling tunable analog sigmoid and Gaussian activations. The SA‐transistor improves MRI classification accuracy, while the GA‐transistor supports precise Gaussian kernel tuning for forecasting. Both functions are implemented in a single device, offering compact, energy‐efficient analog AI processing ...
Junhyung Cho   +9 more
wiley   +1 more source

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