We compute the properties of singlet and triplet bipolarons on two-dimensional lattices using the continuous time quantum Monte Carlo algorithm. Properties of the bipolaron including the total energy, inverse mass, bipolaron radius and number of phonons associated with the bipolaron demonstrate the qualitative difference between models of electron phonon interaction with longrange interaction (...

to diffusion, a convection term is present. Our overall aim is to look at the effect of convection on the existence and What is the long-time effect of adding convention to a discretised reaction-diffusion equation? For linear problems, it is well known stability of the true and spurious fixed points. that convection may denormalise the process, and, in particular, The potential denormalising e...

Topic tracking, which starts from a few sample stories and finds all subsequent stories that discuss the same topic, is a new challenge for the text categorization task and makes a significant contribution to the accessibility of information, such as archives of news, e-mails, and historical newspapers. Much previous research on topic tracking uses machine learning techniques. However, the smal...

We investigate the impact of disfluencies on the task of classifying natural human-human conversations into topics. Disfluencies are distinctive to spoken language, and their effect on a number of spoken language understanding tasks, including spoken language classification, remains largely unknown. We use a subset of Switchboard-I annotated for disfluencies and topics, and investigate the effe...

On the fixed-point implementation of digital filters, undesirable finite-word-length (FWL) effects arise due to the coefficient truncation and arithmetic roundoff. These FWL effects must be reduced as small as possible because such effects may cause serious degradation of characteristic of digital filters. L2-sensitivity is one of the evaluation functions which evaluate the coefficient quantiza...

The DC and RF electrical behavior of GeTebased RF switches was characterized in both ON and OFF states at temperatures ranging from 25 K to 375 K. ONstate current-voltage characteristics vary only weakly with temperature, exhibiting Ohmic behavior at all temperatures across the full voltage range measured. OFF-state current varies linearly with voltage at all measured fields for low temperature...

On-off firing patterns, in which repetition of clusters of spikes are interspersed with epochs of subthreshold oscillations or quiescent states, have been observed in various nervous systems, but the dynamics of this event remain unclear. Here, we report that on-off firing patterns observed in three experimental models (rat sciatic nerve subject to chronic constrictive injury, rat CA1 pyramidal...

The origin of this study is the 1993 International Mathematical Olympiads, held at Istanbul, Turkey. Problem # 6, which occurred on day 2, reads: Let n > 1 be an integer. There are n lamps L0, . . . , Ln−1 arranged in a circle. Each lamp is either ON or OFF. A sequence of steps S0, S1, . . . , Sj , . . . is carried out. Step Sj affects the state of Lj only (leaving the state of all others lamps...

BACKGROUND This study analyzed the presence of awareness of movement disorders (dyskinesias and hypokinesias) in 25 patients with Parkinson's disease (PD) and motor fluctuations (dyskinesias, wearing off, on-off fluctuations). Of the few studies that have dealt with this topic, none have analyzed the differences in the awareness of motor deficits by comparing the on and off states using motor s...

In the past decade, the federal government has frequently investigated and prosecuted pharmaceutical manufacturers for illegal promotion of drugs for indications not approved by the Food and Drug Administration (FDA) ("off-label" uses). State governments can choose to coordinate with the federal investigation, or pursue their own independent state investigations. One of the largest-ever off-lab...