Scaled Brownian motion (SBM) is widely used to model anomalous diffusion of passive tracers in complex and biological systems. It is a highly nonstationary process governed by the Langevin equation for Brownian motion, however, with a power-law time dependence of the noise strength. Here we study the aging properties of SBM for both unconfined and confined motion. Specifically, we derive the en...

The lifespan of each individual, even in an isogenic cohort and a uniform environment, is quite different. The genetic factors influencing the lifespan in humans as well as animal models are few. The balance is attributed to "chance" variations. In this study, we focus on a third factor, noise or chance variations, as well as on genetic and environmental factors and examine how biodemographic a...

We present some simple computer simulations that indicate that at short time aging is realized in a simple model of binary glasses. It is interesting to note that modest computer simulations are enough to evidenziate this effect. We also find indications of a dynamically growing correlation length. Aging has been discovered long time ago and it is has been experimentally studied in great detail...

Two experiments are reported that were set up to examine the spatial-temporal boundaries of postural instability in upright stance as a function of age (60-96 years) and postural conditions. Subjects stood on a force platform under different experimental conditions (vision/no vision and arms up/down) so that the effect of age on key dynamic properties of postural stability could be determined. ...

Introduction: The brain renin-angiotensin system (RAS) has been reported having a pathological role in age-related impairment in learning and memory. Therefore, angiotensin converting enzyme inhibitors (ACEi) are expected to have positive effects on memory. Longtime treatment with captopril (an angiotensin converting enzyme inhibitor) significantly attenuates the age-related impairment in learn...

BACKGROUND Circadian rhythm stage affects many outcomes, including those of mental aging. METHODS Estimations of 1 minute approximately 5 times/day for a year, 25 years apart, by a healthy male biomedical scientist (RBS), are analyzed by the extended cosinor. RESULTS Cycles of a half-week, a week, approximately 30 days, a half-year and a year, in self-assessed 1-minute estimation by RBS bet...

www.sciencemag.org SCIENCE VOL 325 17 JULY 2009 237 COVER Average patterns of brain recruitment, as measured by functional magnetic resonance imaging, in children with typical reading development (left) or dyslexia (right) as they sound out printed words. Left-hemisphere brain regions engaged by typical readers, the parietal cortex (upper left) and fusiform gyrus (lower left), are less engaged ...

With the emergence of virtualization and cloud computing technologies, several services are housed on virtualization platform. Virtualization is the technology that many cloud service providers rely on for efficient management and coordination of the resource pool. As essential services are also housed on cloud platform, it is necessary to ensure continuous availability by implementing all nece...