Results 61 to 70 of about 76,717 (238)

An Overview of Waveform Optimization Methods for Cognitive Radar

open access: yesLeida xuebao, 2019
Cognitive radar can sense the battlefield environment and feed this information back to a transmitter by imitating the cognitive learning process of bats to enable self-adaptive detection and processing, which are vital for the future intelligent ...
CUI Guolong   +4 more
doaj   +1 more source

Detection of Micro-Doppler Signals of Drones Using Radar Systems with Different Radar Dwell Times

open access: yesDrones, 2022
Not any radar dwell time of a drone radar is suitable for detecting micro-Doppler (or jet engine modulation, JEM) produced by the rotating blades in radar signals of drones.
Jiangkun Gong   +3 more
doaj   +1 more source

Threshold Determination for ARTMAP-FD Familiarity Discrimination [PDF]

open access: yes, 1997
The ARTMAP-FD neural network performs both identification (placing test patterns in classes encountered during training) and familiarity discrimination (judging whether a test pattern belongs to any of the classes encountered during training).
Carpenter, Gail A.   +2 more
core   +1 more source

Is posttraumatic stress disorder specific to drug‐resistant epilepsy or a common feature of chronic disease? A comparative study with atrial fibrillation and type 1 diabetes

open access: yesEpilepsia, EarlyView.
Abstract Objective Posttraumatic stress disorder (PTSD) is more prevalent in epilepsy than in the general population. However, it remains unclear whether this association is specific to epilepsy or a broader consequence of experiencing unpredictable acute episodes within chronic diseases.
Lisa‐Dounia Soncin   +9 more
wiley   +1 more source

Nature-inspired waveform optimisation for range spread target detection in cognitive radar

open access: yesThe Journal of Engineering, 2019
The waveform optimisation problem in cognitive radar is non-convex and will have sub-optimal solutions when solved by the semi-definite relaxation (SDR) technique. Here, a novel nature-inspired waveform optimisation framework is proposed for range-spread
Qing Wang   +4 more
doaj   +1 more source

Research and Diagnostic Algorithmic Rules (RADAR) and RADAR Plots for the First Episode of Major Depressive Disorder: Effects of Childhood and Recent Adverse Experiences on Suicidal Behaviors, Neurocognition and Phenome Features

open access: yesBrain Sciences, 2023
Recent studies have proposed valid precision models and valid Research and Diagnostic Algorithmic Rules (RADAR) for recurrent major depressive disorder (MDD).
Michael Maes, Abbas F. Almulla
doaj   +1 more source

When is Cognitive Radar Beneficial?

open access: yes, 2022
When should an online reinforcement learning-based frequency agile cognitive radar be expected to outperform a rule-based adaptive waveform selection strategy? We seek insight regarding this question by examining a dynamic spectrum access scenario, in which the radar wishes to transmit in the widest unoccupied bandwidth during each pulse repetition ...
Thornton, Charles E.   +1 more
openaire   +2 more sources

Defining the end point of status epilepticus: A scoping review and framework for standardization

open access: yesEpilepsia, EarlyView.
Abstract Status epilepticus (SE) is a life‐threatening neurological emergency with consensus‐driven definitions for onset but no standardized criteria for its end point. This gap creates uncertainty in research and clinical practice. We conducted a scoping review to evaluate how end points have been defined in SE research and to identify key areas of ...
Fawad A. Khan   +6 more
wiley   +1 more source

Familiarity Discrimination of Radar Pulses [PDF]

open access: yes, 1998
The ARTMAP-FD neural network performs both identification (placing test patterns in classes encountered during training) and familiarity discrimination (judging whether a test pattern belongs to any of the classes encountered during training).
Granger, Eric   +3 more
core   +1 more source

White Matter Dysfunction and Neurotransmitter Basis Underlying the Freezing of Gait in Parkinson's Disease

open access: yesiNew Medicine, EarlyView.
In the freezing of gait in Parkinson's disease, white matter shows decreased local activity but increased functional connectivity. These distinct dysfunctions are uniquely associated with specific neurotransmitter systems (GABA, dopamine, etc.), mapping a new neurochemical basis for this debilitating symptom. ABSTRACT Freezing of gait (FOG) is a severe
Pingping Liu   +10 more
wiley   +1 more source

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