Results 31 to 40 of about 1,948,990 (331)

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

Approximation-Avoidance-Based Robust Quantitative Prescribed Performance Control of Unknown Strict-Feedback Systems

open access: yesMathematics, 2022
In this article, we propose a robust quantitative prescribed performance control (PPC) strategy for unknown strict-feedback systems, capable of quantitatively designing convergence time and minimizing overshoot.
Yin’an Feng, Xiangwei Bu
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

Multi-Robot Leader Grouping Consistent Formation Control Method Research with Low Convergence Time Based on Nonholonomic Constraints

open access: yesApplied Sciences, 2022
Aiming at the formation and maintenance of the multiple formations of nonholonomic constrained multi-robots, a leader-follower formation control method under the grouping consistency is proposed on the trajectory tracking of a nonholonomic constrained ...
Hongchao Zhuang   +3 more
doaj   +1 more source

Critical probabilities and convergence time of Percolation Probabilistic Cellular Automata [PDF]

open access: yes, 2014
This paper considers a class of probabilistic cellular automata undergoing a phase transition with an absorbing state. Denoting by ${\mathcal{U}}(x)$ the neighbourhood of site $x$, the transition probability is $T(\eta_x = 1 | \eta_{{\mathcal{U}}(x ...
Taggi, Lorenzo
core   +1 more source

Design optimisation of low earth orbit constellation based on BeiDou Satellite Navigation System precise point positioning

open access: yesIET Radar, Sonar & Navigation, 2022
The use of low earth orbit (LEO) satellites to enhance the performance of global navigation satellite system navigation and positioning services has become a popular research topic.
Jing Liu   +5 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

Assessing the Performance of Multipath Mitigation for Multi-GNSS Precise Point Positioning Ambiguity Resolution

open access: yesRemote Sensing, 2023
Real-time GNSS PPP is commonly used for high-precision positioning, but its utility is constrained by factors that necessitate extended convergence periods for a dependable accuracy.
Kai Zheng   +4 more
doaj   +1 more source

Weak convergence of conditioned birth-death processes in discrete time [PDF]

open access: yes, 1997
We consider a discrete-time birth-death process on the nonnegative integers with -1 as an absorbing state and study the limiting behaviour as $n \to \infty$ of the process conditioned on nonabsorption until time $n$.
Coolen-Schrijner, Pauline   +1 more
core   +4 more sources

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