Results 41 to 50 of about 10,662,693 (288)

Diffuse MRI Edema Predicts Relapse in Cerebral Amyloid Angiopathy–Related Inflammation

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To identify MRI predictors of relapse and quantify relapse and mortality risk in cerebral amyloid angiopathy–related inflammation (CAA‐RI). A secondary objective was to assess the association between mycophenolate mofetil use and relapse risk. Methods We performed a retrospective cohort study of 36 patients with CAA‐RI treated at the
G. Abbas Kharal, Gowtham Yerneni, Kim J. Griffin, Nicolas Thompson, Ken Uchino, Irene Katzan, Dolora Wisco, Abeer Farrag, Jayashree Sundarajan, Andrew Russman, M. Shazam Hussain   +10 more
wiley   +1 more source

A Modified Unequally Spaced Array Antenna Synthesis Method for Side Lobe Reduction [PDF]

Radioengineering, 2017
The aim of this paper is to demonstrate the application of Unequally Spaced Arrays (USAs) in decreasing side lobe level (SLL) in linear arrays. As well known, solving of a nonlinear equation is needed in USA antenna pattern synthesis.
S. Veisee, Sh. Asadi
doaj  

γ-Aminobutyric acid as a biomarker of the lateralizing and monitoring drug effect in patients with magnetic resonance imaging-negative temporal lobe epilepsy

Frontiers in Neuroscience, 2023
IntroductionDespite verifying proton magnetic resonance spectroscopy (1H-MRS) for focal localization in magnetic resonance imaging (MRI)-negative temporal lobe epilepsy (TLE), it is necessary to illustrate metabolic changes and screen for effective ...
Shuohua Wu, Shuohua Wu, Qianqi Wang, Huige Zhai, Yiwen Zhang, Dongyuan Xu, Gen Yan, Renhua Wu   +7 more
doaj   +1 more source

A genetic algorithm for the level control of nulls and side lobes in linear antenna arrays

Journal of King Saud University - Computer and Information Sciences, 2013
AbstractThe design problem of imposing deeper nulls in the interference direction of uniform linear antenna arrays under the constraints of a reduced side lobe level (SLL) and a fixed first null beam width (FNBW) is modeled as a simple optimization problem. The real-coded genetic algorithm (RGA) is used to determine an optimal set of current excitation
Bipul Goswami, Durbadal Mandal
openaire   +2 more sources

Clinical Impact of MGMT Promoter Methylation in IDH‐Mutant Gliomas: Influence of Threshold Selection and Clinical Confounding

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background The clinical relevance of MGMT promoter methylation in IDH‐mutant gliomas remains controversial in the era of molecular classification. We aimed to systematically evaluate its clinical relevance by integrating quantitative assessment, cutoff exploration, and adjustment for clinical confounding.
Haihui Jiang, Linxi Cao, Xiaodong Chen, Siqi Tong, Qinghui Zhu, Jun Yang, Song Lin, Yong Cui   +7 more
wiley   +1 more source

Optimizing Energy Utilization in Unequally Spaced Linear Array for Smart Antenna

Arid Zone Journal of Engineering, Technology and Environment, 2020
Radiation in the form of unwanted patterns, energy wastage and reduction is caused by high side lobe levels in a radiation pattern. This, in turn, affects the overall performance of the antenna. The purpose of this work is to improve the performance of a
T. O. Fajemilehin, J. F. Opadiji, S. A. Olatunji   +2 more
doaj  

Side-lobe level reduction in bio-inspired optical phased-array antennas

Optics Express, 2017
Phased arrays are expected to play a critical role in visible and infrared wireless systems. Their improved performance compared to single element antennas finds uses in communications, imaging, and sensing. However, fabrication of photonic antennas and their feeding network require long element separation, leading to the appearance of secondary ...
Pita, Julián L., Aldaya, Ivan, Santana, Octávio J. S., De Araujo, Luís E. E., Dainese, Paulo, Gabrielli, Lucas H.   +5 more
openaire   +4 more sources

MIMO-Radar Waveform Covariance Matrix for High SINR and Low Side-Lobe Levels [PDF]

IEEE Transactions on Signal Processing, 2014
Multiple-input multiple-output (MIMO) radar has better parametric identifiability but compared to phased-array radar, it shows loss in signal-to-noise ratio due to noncoherent processing. To exploit the benefits of both MIMO radar and phased array, a waveform covariance matrix is proposed.
Sajid Ahmed, Mohamed-Slim Alouini
openaire   +3 more sources

Subjective Cognitive Concerns and Cognitive Trajectories in Parkinson's Disease: Biomarker Impact

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the relationship of subjective cognitive concerns (SCC) with biomarkers of Alzheimer's disease (AD), neurodegeneration, and Parkinson's disease (PD) and domain‐specific cognitive trajectories among cognitively unimpaired persons with de novo PD. Method Cognitively unimpaired participants with SCC (n = 294) and without SCC (
Francesca V. Lopez, Fareshte Erani, Katherine J. Bangen, David G. Coughlin, Douglas Galasko, Kelsey R. Thomas   +5 more
wiley   +1 more source

ADAPTIVE BEAMFORMING IN SMART ANTENNA USINGTCHEBYSCHEFF DISTRIBUTION AND VARIANTS OF LEAST MEAN SQUARE ALGORITHM [PDF]

Journal of Engineering Science and Technology, 2017
Tchebyscheff distribution is used for adaptive beam formation for smart antenna combined with different variants of least mean square (LMS) algorithm.
ANUPAMA SENAPATI, JIBENDU SEKHAR ROY
doaj