The decay of highly excited nuclear matter produced in heavy ion collisions is a complex dynamic process, which needs, in principle, a sophisticated treatment. One simple approach is the freezeout concept in which the hot and dense matter in the initial stage is assumed to reach thermal equilibrium as long as reaction rates are high. With decreasing density, the reaction rates decrease and the ...

BACKGROUND Brazil has made progress towards a more equitable distribution of health care, but gains may be threatened by economic instability resulting from the 2008 global financial crisis. This study measured predictors of health care utilization and changes in horizontal inequity between 2008 and 2013. METHOD Data were from two nationally representative surveys that measured a variety of s...

Face recognition is one of biometric methods, to identify given face image using main features of face. In this paper, a neural based algorithm is presented, to detect frontal views of faces. The dimensionality of face image is reduced by the Kernel based 2 dimensional symmetrical principal component analysis (K2DSPCA) and the recognition is done by the Back propagation Neural Network (BPNN). H...

On March 21, 1983, the program committee for the 9th Symposium on Operating System Principles, having read the eighty-three papers submitted, selected sixteen for presentation at the symposium. This acceptance ratio of about one in five approximates those of past SOSPs, although the number of submissions was somewhat lower than in recent years. Several members of the program committee found it ...

Integer carrier phase ambiguity resolution is the key to fast and high-precision global navigation satellite system (GNSS) positioning and application. Apart from integer estimation, also acceptance tests are part of the ambiguity resolution process. A popular acceptance test is the so-called ratio-test. In this contribution we study the properties and the underlying concepts of the ratio-test....

This paper addresses issues related to weights and acceptance ratios in generalized ensemble simulation (GES), while comparing two algorithms of GES: serial (e.g., simulated tempering) and parallel (e.g., parallel tempering or replica exchange). We derive a cumulant approximation formula for optimal weights in the serial GES and discuss its effectiveness in practical applications. We compare th...

In a speaker veri ̄cation system, a claimed speaker's score is computed to accept or reject the speaker claim. Most of the current methods compute the score as the ratio of the claimed speaker's and the impostors' likelihood functions. Based on analysing false acceptance and false rejection errors obtained by using these methods, we propose a generalised method to ̄nd better scores which can red...