Results 21 to 30 of about 340,729 (265)

Iterative time reversal with tunable convergence [PDF]

open access: yesElectronics Letters, 2011
4 pages, 3 figures, published on Electronics ...
Taddese, Biniyam Tesfaye   +3 more
openaire   +2 more sources

Habenula and ADHD: Convergence on time [PDF]

open access: yesNeuroscience & Biobehavioral Reviews, 2013
Attention deficit/hyperactivity disorder (ADHD) is a childhood-onset psychiatric condition characterized by hyperactivity, impulsivity, and attention deficit. In addition to these core symptoms, accumulating evidence suggests that ADHD may also involve alterations in circadian rhythms, sleep disturbance, and time perception.
Lee, Young-A, Goto, Yukiori
openaire   +2 more sources

A New Weighting Approach with Application to Ionospheric Delay Constraint for GPS/GALILEO Real-Time Precise Point Positioning

open access: yesApplied Sciences, 2018
The real-time precise point positioning (RT PPP) technique has attracted increasing attention due to its high-accuracy and real-time performance. However, a considerable initialization time, normally a few hours, is required in order to achieve the ...
Tianjun Liu   +4 more
doaj   +1 more source

Accuracy of Precise Point Positioning (PPP) with the use of different International GNSS Service (IGS) products and stochastic modelling [PDF]

open access: yesGeodesy and Cartography, 2018
This paper provides analyses of the accuracy and convergence time of the PPP method using GPS systems and different IGS products. The official IGS products: Final, Rapid and Ultra Rapid as well as MGEX products calculated by the CODE analysis centres ...
Damian Kiliszek   +2 more
doaj   +1 more source

Convergence of space and time through GIS [PDF]

open access: yesGlasnik Srpskog Geografskog Društva, 2023
Human's exploration of space has changed over time, depending on the expansion of the limits of his knowledge. Space is infinite, but it is limited by the possibility of human knowledge. The original man knew very little about the space in which
Valjarević Aleksandar   +1 more
doaj   +1 more source

On the Convergence of Ionospheric Constrained Precise Point Positioning (IC-PPP) Based on Undifferential Uncombined Raw GNSS Observations

open access: yesSensors, 2013
Precise Point Positioning (PPP) has become a very hot topic in GNSS research and applications. However, it usually takes about several tens of minutes in order to obtain positions with better than 10 cm accuracy.
Hongping Zhang   +6 more
doaj   +1 more source

Improving the Convergence Period of Adaptive Data Rate in a Long Range Wide Area Network for the Internet of Things Devices

open access: yesEnergies, 2021
A Long-Range Wide Area Network (LoRaWAN) is one of the most efficient technologies and is widely adopted for the Internet of Things (IoT) applications. The IoT consists of massive End Devices (EDs) deployed over large geographical areas, forming a large ...
Khola Anwar   +8 more
doaj   +1 more source

Graph-Based Generalization of Galam Model: Convergence Time and Influential Nodes

open access: yesPhysics, 2023
We study a graph-based generalization of the Galam opinion formation model. Consider a simple connected graph which represents a social network. Each node in the graph is colored either blue or white, which indicates a positive or negative opinion on a ...
Sining Li, Ahad N. Zehmakan
doaj   +1 more source

Discrete-Time Convergent Nonlinear Systems

open access: yesIEEE Transactions on Automatic Control
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marc Jungers   +2 more
openaire   +2 more sources

Initial Assessment of Precise Point Positioning with LEO Enhanced Global Navigation Satellite Systems (LeGNSS)

open access: yesRemote Sensing, 2018
The main challenge of precise point positioning (PPP) applications is the long convergence time of typically a half hour, or even more, to achieve centimeter accuracy. Even when the multi-constellation is involved and ambiguity resolution is implemented,
Haibo Ge   +6 more
doaj   +1 more source

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