Results 81 to 90 of about 77,328 (260)

A Unified Multi-Functional Dynamic Spectrum Access Framework: Tutorial, Theory and Multi-GHz Wideband Testbed

open access: yesSensors, 2009
Dynamic spectrum access is a must-have ingredient for future sensors that are ideally cognitive. The goal of this paper is a tutorial treatment of wideband cognitive radio and radar—a convergence of (1) algorithms survey, (2) hardware platforms survey ...
Zhe Chen   +8 more
doaj   +1 more source

Buffered Reset Leads to Improved Compression in Fuzzy ARTMAP Classification of Radar Range Profiles [PDF]

open access: yes, 1996
Fuzzy ARTMAP has to date been applied to a variety of automatic target recognition tasks, including radar range profile classification. In simulations of this task, it has demonstrated significant compression compared to k-nearest-neighbor classifiers ...
Grossberg, Stephen   +2 more
core   +1 more source

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

Cognitive target detection based on Bayesian approach in radar

open access: yesThe Journal of Engineering, 2019
Cognitive radar (CR), which uses a closed-loop feedback perception-action cycle system, aims to develop a higher level of intelligence. In this study, the authors develop an efficient Bayesian approach to target detection in CR.
Ning Ma   +4 more
doaj   +1 more source

Monitoring and assessment for obstructive sleep apnea

open access: yesFlexMat, EarlyView.
This review systematically classifies Obstructive Sleep Apnea (OSA) monitoring indicators into three categories: physical, biochemical, and electrophysiological indicators, and lists several methods for each category. Abstract Obstructive sleep apnea (OSA) is a common chronic sleep‐disordered breathing disease characterized by recurrent upper airway ...
Yaowen Xu   +6 more
wiley   +1 more source

Processing of Synthetic Aperture Radar Images by the Boundary Contour System and Feature Contour System [PDF]

open access: yes, 1992
An improved Boundary Contour System (BCS) and Feature Contour System (FCS) neural network model of preattentive vision is applied to two large images containing range data gathered by a synthetic aperture radar (SAR) sensor.
Cruthirds, Dan   +5 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

Transdiagnostic symptom networks in adolescent psychopathology: A longitudinal panel network analysis

open access: yesJCPP Advances, EarlyView.
Abstract Background Understanding symptom patterns of emerging psychopathology is essential for early detection and intervention. Network analysis offers a promising approach by conceptualizing emerging psychopathology as dynamic interactions between symptoms over time.
Xenia A. Häfeli   +3 more
wiley   +1 more source

Business Process Management Maturity and Digital Transformation: Evidence From a Financial Institution in an Emerging Economy

open access: yesKnowledge and Process Management, EarlyView.
ABSTRACT This study examines how business process management (BPM) maturity shapes digital transformation in a large financial institution operating in a highly regulated, emerging‐economy context. Drawing on a qualitative single case study, the research applies Rosemann and De Bruin's BPM Maturity Model to analyse how different maturity dimensions ...
Shirley Xavier Segala   +2 more
wiley   +1 more source

A Self-Organizing System for Classifying Complex Images: Natural Textures and Synthetic Aperture Radar [PDF]

open access: yes, 1996
A self-organizing architecture is developed for image region classification. The system consists of a preprocessor that utilizes multi-scale filtering, competition, cooperation, and diffusion to compute a vector of image boundary and surface properties ...
Grossberg, Stephen, Williamson, James
core  

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