We consider testing the null hypothesis of no spatial correlation against the alternative of pure first order spatial autoregression. A test statistic based on the least squares estimate has good first-order asymptotic properties, but these may not be relevant in small or moderate-sized samples, especially as (depending on properties of the spatial weight matrix) the usual parametric rate of co...

This paper offers two new statistical tests for serial correlation with better power properties. The first test is concerned with wavelet-based portmanteau tests of serial correlation. The second test extends the wavelet-based tests to the residuals of a linear regression model. The wavelet approach is appealing, since it is based on the different behavior of the spectra of a white noise proces...

Background: The importance of continuous monitoring along with rapid and accurate notification of changes in blood components such as hemoglobin concentration, especially in acute situations, encourages researchers to use non-invasive methods for measuring.Objective: This study was aimed to investigate the correlation between hemoglobin concentration and photoplethysmogram (PPG) and the p...

introduction: accurate diagnosis of dental pulp conditions plays a key role in selection of an appropriate treatment including conservative vital pulp therapy (treatable pulp) or root canal treatment (untreatable pulp). the purpose of this study was to assess the accuracy of sensibility tests and the correlation of pulp response to sensibility tests with histologic pulp condition . material and...