Results 21 to 30 of about 492,303 (294)

Tropical Pacific spatial trend patterns in observed sea level: internal variability and/or anthropogenic signature? [PDF]

open access: yes, 2012
In this study we focus on the sea level trend pattern observed by satellite altimetry in the tropical Pacific over the 1993–2009 time span (i.e. 17 yr).
Becker, M.   +4 more
core   +5 more sources

Delayed-feedback chimera states: Forced multiclusters and stochastic resonance

open access: yes, 2016
A nonlinear oscillator model with negative time-delayed feedback is studied numeri- cally under external deterministic and stochastic forcing. It is found that in the unforced system complex partial synchronization patterns like chimera states as well as
Maistrenko, Yuri   +3 more
core   +1 more source

External Force Estimation for Telerobotics without Force Sensor [PDF]

open access: yes, 2014
This paper establishes an approach to external force estimation through the use of a mathematical model and current sensing, without employing a force/torque sensor. The advantages and need for force feedback have been well established in the field of telerobotics.
Sol Acero, Enrique del   +3 more
openaire   +2 more sources

External Surface Water Influence on Explosive Eruption Dynamics, With Implications for Stratospheric Sulfur Delivery and Volcano-Climate Feedback

open access: yesFrontiers in Earth Science, 2022
Explosive volcanic eruptions can inject sulfur dioxide (SO2) into the stratosphere to form aerosol particles that modify Earth’s radiation balance and drive surface cooling.
Colin R. Rowell    +4 more
doaj   +1 more source

The intrinsic rarity of equilibrium response in stratigraphic processes

open access: yesGeosystems and Geoenvironment
Conventional sequence stratigraphy is based, explicitly or implicitly, on the hypothesis that steady external forcing results in a steady stratigraphic configuration (equilibrium response), so that an unsteady stratigraphic configuration is usually ...
Junhui Wang, Tetsuji Muto
doaj   +1 more source

Major factors of global and regional monsoon rainfall changes: natural versus anthropogenic forcing

open access: yesEnvironmental Research Letters, 2020
A number of studies have investigated the mechanisms that determine changes in precipitation, including how a wet region gets wetter. However, not all monsoon areas get wetter—there is a need to understand the major factors behind changes in regional ...
Kyung-Ja Ha   +4 more
doaj   +1 more source

Observed and Projected Changes of Large‐Scale Environments Conducive to Spring MCS Initiation Over the US Great Plains

open access: yesGeophysical Research Letters, 2022
Mesoscale convective systems (MCSs) are frequent over the US Great Plains during spring. The link between large‐scale environments and spring MCS initiation were well established.
Fengfei Song   +4 more
doaj   +1 more source

Phase synchronization in tilted deterministic ratchets

open access: yes, 2006
We study phase synchronization for a ratchet system. We consider the deterministic dynamics of a particle in a tilted ratchet potential with an external periodic forcing, in the overdamped case. The ratchet potential has to be tilted in order to obtain a
Acebrón   +45 more
core   +1 more source

On Resonance in Periodically Forced Oscillators and Coupled Systems of Excitable Systems and Nonlinear Oscillators [PDF]

open access: yes, 1996
We analyze some mathematical problems that arise in studies of phenomena observed in the cardiac action. We illustrate a method to characterize the response of a nonlinear oscillator to an external forcing, and introduce some numerical results.
Watanabe, Masaji
core   +1 more source

Bursting analysis for the pre-Bötzinger complex with periodic forcing

open access: yesAIP Advances, 2019
Pre-Bötzinger complex is considered to have a closely relationship with the respiratory rhythms. In this paper, we investigate the bursting phenomena of the pre-Bötzinger complex respiratory neuron with periodic slow stimulation.
Pan Meng, Jianwei Dong, Quanbao Ji
doaj   +1 more source

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