Last years, Wavelet Packet Modulation (WPM) or Wavelet Packet Transform based Orthogonal Frequency Division Multiplexing (WPT-OFDM) have been introduced to wired and wireless communication fields as efficient Multicarrier Modulation (MCM) techniques. The wavelets have interesting features such as flexibility, compatibility and localization in both time and frequency domains with no need to use ...

We outline the essential features of a Linux PC cluster which is now being developed at National Taiwan University, and discuss how to optimize its hardware and software for lattice QCD with overlap Dirac quarks. At present, the cluster constitutes of 30 nodes, with each node consisting of one Pentium 4 processor (1.6/2.0 GHz), one Gbyte of PC800 RDRAM, one 40/80 Gbyte hard disk, and a network ...

A discussion of the overlap problem of reweighting approaches to evaluating critical phenomenon in fermionic systems is motivated by highlighting the divergence of the joint probability density function of a general ratio. By identifying the bounds for which this integral can be expressed in closed form, we establish criteria for accurately mapping the joint ratio distribution of two disjoint e...

The macroscopic dynamics of an extremely diluted threestate neural network based on mutual information and mean-field theory arguments is studied in order to establish the stability of the stationary states. Results are presented in terms of the pattern-recognition overlap, the neural activity, and the activity-overlap. It is shown that the presence of synaptic noise is essential for the stabil...

Prior efforts have shown that data fusion techniques can be used to improve retrieval effectiveness under certain situations. Although the precise conditions necessary for fusion to improve retrieval have not been identified, it is widely believed that as long as component result sets used in fusion have higher relevant overlap than non-relevant overlap, improvements due to fusion can be observ...

In this paper, we propose, based on the analytical analysis of the received signal for single carrier overlap frequency domain equalizer (SC-OFDE) equalization, an optimum design of the overlap frequency domain equalization. From the estimation of the received signal-to-interference-and-noise-ratio (SINR), we propose an algorithm that automatically adapts one important parameter of the OFDE equ...

We present a scaling analysis in the 1-flavor Schwinger model with the full overlap and the rooted staggered determinant. In the latter case the chiral and continuum limit of the scalar condensate do not commute, while for overlap fermions they do. For the topological susceptibility a universal continuum limit is suggested, as is for the partition function and the Leutwyler-Smilga sum rule. In ...

asthma and chronic obstructive pulmonary disease (copd) are highly prevalent chronic diseases in the general population. both are characterized by similar mechanisms: airway inflammation, airway obstruction, and airway hyperresponsiveness. however, the distinction between the two obstructive diseases is not always clear. multiple epidemiological studies demonstrate that in elderly people with o...