Results 111 to 120 of about 404,248 (295)
The Precision Array for Probing the Epoch of Reionization: 8 Station Results
, 2009 We are developing the Precision Array for Probing the Epoch of Reionization (PAPER) to detect 21cm emission from the early Universe, when the first stars and galaxies were forming.
Aaron R. Parsons +45 more
core +1 more source
Radio Environment Maps: The Survey of Construction Methods
KSII Transactions on Internet and Information Systems, 2014 Radio environment maps (REMs) and geolocation database represent an important source of information for the operation of cognitive radio networks, replacing or complementing spectrum sensing information. This paper provides a survey of methods for constructing the radio frequency layer of radio environment map (RF-REM) using distributed measurements of
openaire +1 more source
Advanced Engineering Materials, EarlyView.Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
IEEE AccessThe accurate characterization of signal propagation is critical for optimizing wireless network performance and supporting applications such as electromagnetic field (EMF) exposure assessment and the development of Radio Environmental Maps (REMs).
Yiannis Kiouvrekis +6 more
doaj +1 more source
Optical integral field spectroscopy of the extended line emission around six radio-loud quasars
, 1999 We present integral field spectroscopy of a small sample of radio-loud quasars at intermediate redshift (0 ...
Crawford, C. S., Vanderriest, C.
core +1 more source
Advanced Engineering Materials, EarlyView.The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi +3 more
wiley +1 more source
REM-U-Net: Deep Learning Based Agile REM Prediction With Energy-Efficient Cell-Free Use Case
IEEE Open Journal of Signal ProcessingRadio environment maps (REMs) hold a central role in optimizing wireless network deployment, enhancing network performance, and ensuring effective spectrum management.
Hazem Sallouha +3 more
doaj +1 more source
Cognitive Scout Node for Communication in Disaster Scenarios
Journal of Computer Networks and Communications, 2012 The cognitive radio (CR) concept has appeared as a promising technology to cope with the spectrum scarcity caused by increased spectrum demand due to the emergence of new applications.
Rajesh K. Sharma +3 more
doaj +1 more source
Map-Aware Models for Indoor Wireless Localization Systems: An Experimental Study
, 2014 The accuracy of indoor wireless localization systems can be substantially enhanced by map-awareness, i.e., by the knowledge of the map of the environment in which localization signals are acquired.
Montorsi, Francesco +2 more
core +1 more source
Innovating Aircraft Repair Processes: The Role of Digitalization in Sustainability
Advanced Engineering Materials, EarlyView.This research explores how digitalization—by storing detailed non‐destructive testing data in structured DICONDE databases and creating a standard data model of the component—innovates aviation maintenance and repair processes. Coupled with a developed state‐based simulation model, it enables data‐driven, sustainable repair strategies that reduce waste,
Johanna Aigner +3 more
wiley +1 more source