In underdoped cuprates fluctuations of the phase of the superconducting order parameter play a role due to the small superfluid density. We consider the effects of phase fluctuations assuming the exchange of spin fluctuations to be the predominant pairing interaction. Spin fluctuations are treated in the fluctuation-exchange approximation, while phase fluctuations are included by Berezinskii-Ko...

The effect of turbulent electron diffusion from stochastic electron orbits on the stability of low beta fluctuations is considered. A set of coupled self-adjoint equations is derived for the fluctuation potentials and A,,. For the tearing mode, it is shown that stability is obtained for sufficiently large values of the diffusion coefficient, Provided D, 1/n, this implies that a density threshol...

In industrial applications arises the need for a high level cognition system to guide mobile robots robustly. This article addresses an integrated solution to achieve this task. The proposed system exhibits robust tracking of a visual guide and provides an adaptive interaction, which maintains the stability of the overall system against fluctuations of internal or external system parameters. Mo...

A fine tuned hierarchy between a strongly coupled high energy compos-iteness scale and a much lower chiral symmetry breaking scale is a requisite ingredient in many models of dynamical electroweak symmetry breaking. Using a nonperturbative continuous Wilson renormalization group equation approach, we explore the stability of such a hierarchy against quantum fluctuations. Many of the currently s...

A mathematical framework for the internal conformational dynamics and external mechanical movement of single biological macromolecules in aqueous solution at constant temperature is developed. Both the internal dynamics and external movement are stochastic; the former is represented by a master equation for a set of discrete states, and the latter is described by a continuous Smoluchowski (Fokk...

Fluctuations in weight/fatness are compared in a longitudinal study of male participants aged 40-80 years from the Normative Aging Study (NAS) at the Veterans Administration Outpatient Clinic in Boston. The incidence and prevalence of repetitive weight changes and factors associated with stability in body habitus are examined. The contributions of secular trends in weight/fatness, fat distribut...

Thermal activation tends to destroy the magnetic stability of small magnetic nanoparticles, with crucial implications for ultrahigh density recording among other applications. Here we demonstrate that low-blocking-temperature ferromagnetic (FM) Co nanoparticles (T(B)<70  K) become magnetically stable above 400 K when embedded in a high-Néel-temperature antiferromagnetic (AFM) NiO matrix. The or...

Chemical reactions in cells are subject to intense stochastic fluctuations. An important question is how the fundamental physiological behavior of the cell is kept stable against those noisy perturbations. In this study, a stochastic model of the cell cycle of budding yeast was constructed to analyze the effects of noise on the cell-cycle oscillation. The model predicts intense noise in levels ...

A mathematical framework for the internal conformational dynamics and external mechanical movement of single biological macromolecules in aque-ous solution at constant temperature is developed. Both the internal dynamics and external movement are stochastic; the former is represented by a master equation for a set of discrete states, and the latter is described by a continuous Smoluchowski (Fok...

Functional life of any barrage project depends on functional stability of the concrete piers. The piers are constructed using concrete of different grades. Its durability is dependent on various factors viz. speed of running water, its aggressivity, temperatures fluctuations etc. The endurance capacity of these piers against these adverse conditions goes on reducing with passage of time. Gradua...