Results 51 to 60 of about 7,300,790 (323)

Transition between two regimes describing internal fluctuation of DNA in a nanochannel. [PDF]

open access: yesPLoS ONE, 2011
We measure the thermal fluctuation of the internal segments of a piece of DNA confined in a nanochannel about 50-100 nm wide. This local thermodynamic property is key to accurate measurement of distances in genomic analysis.
Tianxiang Su   +3 more
doaj   +1 more source

Uniformity, Periodicity and Symmetry Characteristics of Forces Fluctuation in Helical-Edge Milling Cutter

open access: yesApplied Sciences, 2021
Under most processing conditions, the milling force is expected to be stable and not to fluctuate, in order to improve the processing quality. This study focuses on analyzing the force fluctuation characteristics under conditions of different processing ...
Boyang Meng   +5 more
doaj   +1 more source

Exact Solution to Integrable Open Multi-species SSEP and Macroscopic Fluctuation Theory [PDF]

open access: yes, 2016
We introduce a multi-species generalization of the symmetric simple exclusion process with open boundaries. This model possesses the property of being integrable and appears as physically relevant because the boundary conditions can be interpreted as the
M. Vanicat
semanticscholar   +1 more source

Field theory of fluctuations in glasses [PDF]

open access: yesThe European Physical Journal E, 2011
We develop a field-theoretical description of dynamical heterogeneities and fluctuations in supercooled liquids close to the (avoided) MCT singularity. Using quasi-equilibrium arguments we eliminate time from the description and we completely characterize fluctuations in the beta regime.
S. Franz   +3 more
openaire   +5 more sources

Semiclassical gravity theory and quantum fluctuations [PDF]

open access: yesPhysical Review D, 1993
We discuss the limits of validity of the semiclassical theory of gravity in which a classical metric is coupled to the expectation value of the stress tensor. It is argued that this theory is a good approximation only when the fluctuations in the stress tensor are small. We calculate a dimensionless measure of these fluctuations for a scalar field on a
Kuo, Chung-I, Ford, L. H.
openaire   +3 more sources

Numerical test of hydrodynamic fluctuation theory in the Fermi-Pasta-Ulam chain. [PDF]

open access: yesPhysical review. E, Statistical, nonlinear, and soft matter physics, 2014
Recent work has developed a nonlinear hydrodynamic fluctuation theory for a chain of coupled anharmonic oscillators governing the conserved fields, namely, stretch, momentum, and energy.
Suman Das   +4 more
semanticscholar   +1 more source

Improved Study on the Fluctuation Velocity of High-Speed Railway Catenary Considering the Influence of Accessory Parts

open access: yesIEEE Access, 2020
To improve the prediction accuracy of the wave propagation velocity of high-speed railway catenary, a method for identifying the fluctuation velocity of catenary (FVC) considering the influence of the accessory parts of catenary (APC) is proposed.
Xiaoqiang Chen   +3 more
doaj   +1 more source

Dependent Competing Failure Processes in Reliability Systems

open access: yesEntropy
This paper deals with a reliability system hit by three types of shocks ranked as harmless, critical, or extreme, depending on their magnitudes, being below H1, between H1 and H2, and above H2, respectively.
Jewgeni H. Dshalalow   +2 more
doaj   +1 more source

Evaluation Method of Wind Power Consumption Capacity Based on Multi-Fractal Theory

open access: yesFrontiers in Energy Research, 2021
An analysis model of wind power consumption capacity is established with the multi-fractal theory. Firstly, the fluctuation characteristics of wind power are described through multi-fractal parameters, and the correlation between wind power fluctuation ...
Hongzhong Li   +3 more
doaj   +1 more source

On the Balance between Emigration and Immigration as Random Walks on Non-Negative Integers

open access: yesMathematics
Life is on a razor’s edge resulting from the random competitive forces of birth and death. We illustrate this aphorism in the context of three Markov chain population models where systematic random immigration events promoting growth are simultaneously ...
Thierry E. Huillet
doaj   +1 more source

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