Results 41 to 50 of about 144,869 (263)

Signal-to-Noise Ratio in Squeezed-Light Laser Radar

, 2009
The formalism for computing the signal-to-noise ratio (SNR) for laser radar is reviewed and applied to the tasks of target detection, direction-finding, and phase change estimation with squeezed light.
Annovazzi-Lodi, Caves, Fabre, Li, Li, Rubin, Treps, Yuen   +7 more
core   +2 more sources

Single Image Signal-to-Noise Ratio (SNR) Estimation Techniques for Scanning Electron Microscope: A Review

IEEE Access
Noises are commonly present in grayscale images, particularly in Scanning Electron Microscope (SEM) images especially secondary emission noise, which can significantly affect their quality.
Dominic Chee Yong Ong, Kok Swee Sim
doaj   +1 more source

Reduced Muscular Carnosine in Proximal Myotonic Myopathy—A Pilot 1H‐MRS Study

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Myotonic dystrophy type 2 (proximal myotonic myopathy, PROMM) is a progressive multisystem disorder with muscular symptoms (proximal weakness, pain, myotonia) and systemic manifestations such as diabetes mellitus, cataracts, and cardiac arrhythmias.
Alexander Gussew, Maryam Kargaran, Maik Rothe, Andreas Deistung, Dietrich Stoevesandt, Walter A. Wohlgemuth, David Strube, Thomas Kendzierski, Anna Katharina Kölsch, Maurits Gerhard Abraham Heuschen, Markus Otto, Alexander Mensch   +11 more
wiley   +1 more source

Signal-to-noise ratio estimation for M-QAM signals in η−μand κ−μfading channels

EURASIP Journal on Advances in Signal Processing, 2019
In this paper, signal-to-noise ratio (SNR) estimation is carried out by the method of moments (MOM) for fading channels modeled by probability distributions η−μ and κ−μ, considering M-ary quadrature amplitude modulation (M-QAM) with constellation energy ...
Wamberto José Lira de Queiroz, Danilo Brito Teixeira de Almeida, Francisco Madeiro, Waslon Terllizzie Araújo Lopes   +3 more
doaj   +1 more source

NDA Waveform Estimation in the Low-SNR Regime [PDF]

IEEE Transactions on Signal Processing, 2007
This correspondence addresses the problem of nondata-aided waveform estimation for digital communications. Based on the unconditional maximum likelihood criterion, the main contribution of this correspondence is the derivation of a closed-form solution to the waveform estimation problem in the low signal-to-noise ratio regime.
López Salcedo, José Antonio, Vázquez Grau, Gregorio   +1 more
openaire   +2 more sources

Association of Corticospinal Tract Asymmetry With Ambulatory Ability After Intracerebral Hemorrhage

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Ambulatory ability after intracerebral hemorrhage (ICH) is important to patients. We tested whether asymmetry between ipsi‐ and contra‐lesional corticospinal tracts (CSTs) assessed by diffusion tensor imaging (DTI) is associated with post‐ICH ambulation.
Yasmin N. Aziz, Carl D. Langefeld, Mary E. Comeau, Miranda C. Marion, Tyler P. Behymer, Lee A. Gilkerson, Padmini Sekar, Weihong Yuan, Vivek Khandwala, Brady J. Williamson, Thomas Maloney, Achala Vagal, Pierce Boyne, Kari Dunning, Matthew L. Flaherty, Steven J. Kittner, Prachi Mehndiratta, Gunjan Y. Parikh, Michael L. James, David Roh, Fernando D. Testai, Farhaan S. Vahidy, James Thornton, Ranjit Bagga, Daniel Woo, Stacie L. Demel   +25 more
wiley   +1 more source

Reducing bias in auditory duration reproduction by integrating the reproduced signal [PDF]

, 2013
Duration estimation is known to be far from veridical and to differ for sensory estimates and motor reproduction. To investigate how these differential estimates are integrated for estimating or reproducing a duration and to examine sensorimotor biases ...
A Angrilli, A Tomassini, A Wing, A Zaidel, CV Buhusi, D Alais, D Alais, D Bueti, D Bueti, D Bueti, D Bueti, D Burr, DH Brainard, DV Meegan, FH Petzschner, FH Petzschner, G Aschersleben, GM Cicchini, Hermann J. Müller, I Ley, I Oruc, IB Witten, J Burge, J Gibbon, J Hartcher-O'Brien, J Park, JH Wearden, JT Coull, JT Walker, K Takahashi, K Yarrow, K Yarrow, K-M Chen, KJ Jantzen, KP Kording, L Iordanescu, L Jäncke, LA Jones, M Di Luca, M Gori, M Jazayeri, M Kuschel, M Treisman, MC Morrone, MO Ernst, P Binda, P-L Gamache, R Teghtsoonian, RB Ivry, RB Welch, RJ Zatorre, RM Church, S Ganzenmüller, S Goldstone, Stephanie Ganzenmüller, SW Keele, V Pariyadath, V van Wassenhove, Warren H. Meck, WJ Matthews, WJ Matthews, Z Shi, Z Shi, Zhuanghua Shi   +63 more
core   +3 more sources

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri, Isabella Dallasta, Ciaran Stone, Sophia Girgenti, Neda Gould, Rafael H. Llinas, Jonathan Z. Simon, Elisabeth Breese Marsh   +7 more
wiley   +1 more source

Secret Key Generation Based on AoA Estimation for Low SNR Conditions

, 2014
In the context of physical layer security, a physical layer characteristic is used as a common source of randomness to generate the secret key. Therefore an accurate estimation of this characteristic is the core for reliable secret key generation ...
Badawy, Ahmed, Chiasserini, Carla-Fabiana, Elfouly, Tarek, Khattab, Tamer, Mohamed, Amr, Trinchero, Daniele   +5 more
core   +1 more source

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel, Timothy P. Siejka, Cassandra Marotta, Josh J. Y. Lee, Kelly Bertram, Terence J. O'Brien, Meng Law, Lucy Vivash, Ian H. Harding   +8 more
wiley   +1 more source