Results 51 to 60 of about 880,054 (288)

Saturation in cascaded optical amplifier free-space optical communication systems [PDF]

, 2015
The performance of a free-space optical (FSO) communication system in a turbulent atmosphere employing an optical amplifier (OA) cascade to extend reach is investigated.
Aladeloba A.O., Andrew Julian Phillips, Ciaramella E., Ghassemlooy Z., Khalighi M., Malcolm. S. Woolfson, Oluwatosin Jeremiah Bandele, Priyanka Desai, Ramaswami R., Singh S., Xiaoming Z., Xiaoming Z., Yiannopoulos K.   +12 more
core   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Adaptive multiresolution schemes with local time stepping for two-dimensional degenerate reaction-diffusion systems

, 2008
We present a fully adaptive multiresolution scheme for spatially two-dimensional, possibly degenerate reaction-diffusion systems, focusing on combustion models and models of pattern formation and chemotaxis in mathematical biology.
Baier, Ricardo Ruiz, Bendahmane, Mostafa, Bürger, Raimund, Schneider, Kai   +3 more
core   +1 more source

Fast estimation of false alarm probabilities of STAP detectors - the AMF [PDF]

, 2005
This paper describes an attempt to harness the power of adaptive importance sampling techniques for estimating false alarm probabilities of detectors that use space-time adaptive processing.
Rangaswamy, Muralidhar, Srinivasan, Rajan   +1 more
core   +2 more sources

Semi-Supervised Change Detection with Data Augmentation and Adaptive Thresholding for High-Resolution Remote Sensing Images

Remote Sensing
Change detection (CD) is an important research direction in the field of remote sensing, which aims to analyze the changes in the same area over different periods and is widely used in urban planning and environmental protection.
Wuxia Zhang, Xinlong Shu, Siyuan Wu, Songtao Ding   +3 more
doaj   +1 more source

Adaptive Wavelet Based MRI Brain Image De-noising

Frontiers in Neuroscience, 2020
This paper presents a unique approach for wavelet-based MRI brain image de-noising. Adaptive soft and hard threshold functions are first proposed to improve the results of standard soft and hard threshold functions for image de-noising in the wavelet ...
Noorbakhsh Amiri Golilarz, Hui Gao, Rajesh Kumar, Liaqat Ali, Yan Fu, Chun Li   +5 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Principal component analysis and perturbation theory–based robust damage detection of multifunctional aircraft structure [PDF]

, 2013
A fundamental problem in structural damage detection is to define an efficient feature to calculate a damage index. Furthermore, due to perturbations from various sources, we also need to define a rigorous threshold whose overtaking indicates the ...
HAJRYA, Rafik, MECHBAL, Nazih
core   +5 more sources

Drowsiness Detection in Drivers Using Facial Feature Analysis

Applied Sciences
Drowsiness has been recognized as a leading factor in road accidents worldwide. Despite considerable research in this area, this paper aims to improve the precision of drowsiness detection specifically for long-haul travel by employing the Dlib-based ...
Ebenezer Essel, Fred Lacy, Fatema Albalooshi, Wael Elmedany, Yasser Ismail   +4 more
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source