Quantum-mechanical harmonic chain attached to heat baths. II. Nonequilibrium properties
U Zürcher, P Talkner - Physical Review A, 1990 - APS
We study nonequilibrium properties of a one-dimensional harmonic chain to whose ends
independent heat baths are attached which are kept at different temperatures. Using the …
independent heat baths are attached which are kept at different temperatures. Using the …
Thermally activated escape over fluctuating barriers
U Zürcher, CR Doering - Physical Review E, 1993 - APS
We investigate the thermally activated escape of a Brownian particle over a potential barrier
whose height fluctuates with a rate α between the values E+ and E−. We are mainly …
whose height fluctuates with a rate α between the values E+ and E−. We are mainly …
Entropy of electromyography time series
A nonlinear analysis based on Renyi entropy is applied to electromyography (EMG) time
series from back muscles. The time dependence of the entropy of the EMG signal exhibits a …
series from back muscles. The time dependence of the entropy of the EMG signal exhibits a …
[PDF][PDF] Comparison of spectral and entropic measures for surface electromyography time series: a pilot study
In a previous study, we reported that the mean square displacement calculated from the surface
electromyography (sEMG) signal of low back muscles exhibits a plateaulike behavior for …
electromyography (sEMG) signal of low back muscles exhibits a plateaulike behavior for …
Stability during arboreal locomotion
AR Lammers, U Zurcher - Theoretical biomechanics, 2011 - books.google.com
Arboreal locomotion–traveling on the branches, twigs, and trunks of trees and woody shrubs–is
very common among mammals. Most primates, many rodents, marsupials, carnivores, …
very common among mammals. Most primates, many rodents, marsupials, carnivores, …
Reliability difference between spectral and entropic measures of erector spinae muscle fatigability
This study investigated back muscle fatigability of the erector spinae (ES) muscles during
submaximal contractions with the use of surface electromyography (sEMG). It was important to …
submaximal contractions with the use of surface electromyography (sEMG). It was important to …
Torque around the center of mass: dynamic stability during quadrupedal arboreal locomotion in the Siberian chipmunk (Tamias sibiricus)
AR Lammers, U Zurcher - Zoology, 2011 - Elsevier
When animals travel on tree branches, avoiding falls is of paramount importance. Animals
swiftly running on a narrow branch must rely on movement to create stability rather than on …
swiftly running on a narrow branch must rely on movement to create stability rather than on …
[PDF][PDF] Gender differences in spectral and entropic measures of erector spinae muscle fatigue.
Electromyographic power spectral analysis is a valuable measurement; however, conflicting
results have been reported for amplitude and frequency changes during a fatiguing …
results have been reported for amplitude and frequency changes during a fatiguing …
An instantaneous normal mode description of relaxation in supercooled liquids
T Keyes, GV Vijayadamodar, U Zurcher - The Journal of chemical …, 1997 - pubs.aip.org
A new paradigm of liquid state dynamics is emerging based upon instantaneous normal
modes INM. 1 The INM are the eigenfunctions of the force constant matrix, or Hessian, for a …
modes INM. 1 The INM are the eigenfunctions of the force constant matrix, or Hessian, for a …
Nonlinear analysis of electromyography time series as a diagnostic tool for low back pain
Background: A number of studies have evaluated lumbar spinal muscle fatigue using the
electromyography (EMG) signal. However, back muscle fatigue studies do not consistently …
electromyography (EMG) signal. However, back muscle fatigue studies do not consistently …