Results 11 to 20 of about 18,641,062 (303)

Against steady state

open access: yesGeologos, 2022
AbstractNature is never at a steady state. Natural history is generated by ever-new and ever-interacting forces that produce continuous changes. At virtually all timescales, the geological record shows that these changes do not cancel each other out and, thus, that the steady state is utopic.
Garzanti E., Sternai P.
openaire   +5 more sources

Oscillating steady states [PDF]

open access: yesMagnetic Resonance in Medicine, 2006
AbstractThe signal formation and properties of steady‐state free precession (SSFP) in combination with alternating RF pulse phases or alternating spin precession is analyzed. Simulations and experiments demonstrate that the amplitudes of SSFP echo paths are significantly influenced by application of alternating phases either via the exciting RF pulse ...
Scheffler, K.   +3 more
openaire   +4 more sources

Microglia in steady state [PDF]

open access: yesJournal of Clinical Investigation, 2017
Microglial cells are the resident tissue macrophages of the CNS and are widely recognized for their immune surveillance of the healthy CNS. In addition to this well-accepted function, recent findings point to major roles for microglia in instructing and regulating the proper function of the neuronal networks in the adult CNS, but these cells are also ...
Katrin Kierdorf, Marco Prinz
openaire   +3 more sources

Steady State Thermodynamics [PDF]

open access: yesJournal of Statistical Physics, 2006
91 pages, 24 figures, v.2: We have made many nontrivial improvements (Appendix A is new and reports another example where SST can be verified; Section 8.3.3 is also new; We also have discussions about linear response in a nonequilibrium steady state (see sections 6.2, 8.2, A.4, A.6).), v.3: We have made many small imprivements. This version will appear
Sasa, Shin-ichi, Tasaki, Hal
openaire   +2 more sources

Inverting a Steady-State [PDF]

open access: yesProceedings of the Eighth ACM International Conference on Web Search and Data Mining, 2015
We consider the problem of inferring choices made by users based only on aggregate data containing the relative popularity of each item. We propose a framework that models the problem as that of inferring a Markov chain given a stationary distribution. Formally, we are given a graph and a target steady-state distribution on its nodes.
Ravi Kumar 0001   +3 more
openaire   +2 more sources

Bifurcation in a nonlinear steady state system [PDF]

open access: yesOpuscula Mathematica, 2010
The steady state solutions of a nonlinear digital cellular neural network with \(\omega\) neural units and a nonnegative variable parameter \(\lambda\) are sought. We show that \(\lambda = 1\) is a critical value such that the qualitative behavior of our
Gen-Qiang Wang, Sui Sun Cheng
doaj   +1 more source

The steady state fluctuation relation for the dissipation function [PDF]

open access: yes, 2007
We give a proof of transient fluctuation relations for the entropy production (dissipation function) in nonequilibrium systems, which is valid for most time reversible dynamics. We then consider the conditions under which a transient fluctuation relation
Bernhardt, Debra   +13 more
core   +1 more source

Time evolution approach to steady state

open access: yesResults in Physics, 2016
We apply a time evolution approach to the statistical mechanics of one and two dimensional systems to study the evolution toward steady state. We have used the Feynman definition of an inverse operator to show that in one and two dimensions, there is an ...
A. Muriel
doaj   +1 more source

Inconsistencies in steady-state thermodynamics [PDF]

open access: yesPhysical Review E, 2014
We address the issue of extending thermodynamics to nonequilibrium steady states. Using driven stochastic lattice gases, we ask whether consistent definitions of an effective chemical potential mu, and an effective temperature T_e, are possible. mu and T_e are determined via coexistence, i.e., zero flux of particles and energy between the driven system
Dickman, Ronald, Motai, Ricardo
openaire   +3 more sources

The steady-state visual evoked potential in vision research : a review [PDF]

open access: yes, 2015
Periodic visual stimulation and analysis of the resulting steady-state visual evoked potentials were first introduced over 80 years ago as a means to study visual sensation and perception. From the first single-channel recording of responses to modulated
Rossion, Bruno   +11 more
core   +1 more source

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