Results 71 to 80 of about 11,447 (223)

Channel covariance matrix based secret key generation for low‐power terminals in frequency division duplex systems

open access: yesElectronics Letters, 2021
The existing secret key generation (SKG) techniques are not applicable for frequency division duplex (FDD) Internet of Things networks due to the low power constraints and limited computing resources.
Zheng Wan   +3 more
doaj   +1 more source

A Parallel Ensemble Learning Model for Fault Detection and Diagnosis of Industrial Machinery

open access: yesIEEE Access, 2023
Accurate fault detection and diagnosis (FDD) is critical to ensure the safe and reliable operation of industrial machines. Deep learning has recently emerged as effective methods for machine FDD applications.
Mohammed Nasser Al-Andoli   +4 more
doaj   +1 more source

3G Fdd Rapid Prototyping And Training

open access: yes, 2002
Publication in the conference proceedings of EUSIPCO, Toulouse, France ...
Garcia-Alis, D.   +4 more
openaire   +4 more sources

A neutron microscope using a nested Wolter‐I condenser and a bank of diffractive–refractive achromatic objectives

open access: yesJournal of Applied Crystallography, EarlyView.
A neutron microscope is presented comprising a Wolter‐I nested mirror optic as condenser and a 2D array of neutron achromats as objective.We present a nested Wolter‐I mirror design for a neutron condenser, which is based on established X‐ray telescope technology.
H. F. Poulsen   +12 more
wiley   +1 more source

Fault detection of low global warming potential refrigerant supermarket refrigeration system: Experimental investigation

open access: yesCase Studies in Thermal Engineering, 2021
As one of the most energy-intensive end-uses in the commercial buildings sector, supermarkets consume around 50 kWh/ft2 (or 537.6 kWh/m2) of electricity annually, or more than 2 million kWh of electricity per year for a typical store.
Jian Sun   +5 more
doaj   +1 more source

Targeted Trade Policy Instruments and Climate Change Mitigation: The Case of Environmental Provisions in Trade Agreements

open access: yesAustralian Journal of Agricultural and Resource Economics, EarlyView.
ABSTRACT This article examines the effect of including environmental provisions (EPs) in preferential trade agreements (PTAs) on climate change mitigation and explores whether these effects vary based on the heterogeneity of the EPs. Our analysis combines country‐level data on climate change mitigation with details on 300 types of EPs in 775 trade ...
Petros Suzgo Kayovo Mkandawire   +2 more
wiley   +1 more source

Development and Implementation of Fault-Correction Algorithms in Fault Detection and Diagnostics Tools

open access: yesEnergies, 2020
A fault detection and diagnostics (FDD) tool is a type of energy management and information system that continuously identifies the presence of faults and efficiency improvement opportunities through a one-way interface to the building automation system ...
Guanjing Lin   +3 more
doaj   +1 more source

FDD Massive MIMO Channel Estimation With Arbitrary 2D-Array Geometry [PDF]

open access: yesIEEE Transactions on Signal Processing, 2017
This paper addresses the problem of downlink channel estimation in frequency-division duplexing massive multiple-input multiple-output systems. The existing methods usually exploit hidden sparsity under a discrete Fourier transform (DFT) basis to ...
Jisheng Dai, An Liu, V. Lau
semanticscholar   +1 more source

Decades of Enclosure Protection Exert Composite Effects on Grassland Grasshopper Communities

open access: yesIntegrative Zoology, EarlyView.
Decades of enclosure protection have altered grasshopper community structure, with species‐specific effects on population dynamics. For the low‐mobility grasshopper Chorthippus fallax, abundance did not differ strongly between exclosure‐protected and overgrazed areas, but its egg development duration was longer in exclosures. The two C.
Dan‐dan Feng   +7 more
wiley   +1 more source

Long-term temporal changes in the occurrence of a high forest fire danger in Finland [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2012
Climate variation and change influence several ecosystem components including forest fires. To examine long-term temporal variations of forest fire danger, a fire danger day (FDD) model was developed. Using mean temperature and total precipitation of the
H. M. Mäkelä   +2 more
doaj   +1 more source

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