PURPOSE To develop a new shimming calculation method, which can calculate iron piece placements rapidly to make the magnetic field homogeneous at intended homogeneity and then to make the shimming working time short. MATERIALS AND METHODS The shimming calculation yields magnetic moment (MM) distribution, which is calculated by the truncated singular value decomposition (SVD) from the measured...

The purpose of this study was to explore the neural mechanism in Chronic prostatitis/Chronic pelvic pain syndrome (CP/CPPS) using resting-state functional magnetic resonance imaging. The functional magnetic resonance imaging was performed on 31 male CP/CPPS-patients and 31 age and education matched male healthy controls on a 3-T magnetic resonance imaging unit. A two-sample t-test was adopted t...

Dairy cattle evaluation schemes routinely assume homogeneous variance with respect to environment. Increasing evidence suggests the presence of systematic changes in variance components associated with mean level of performance. Best linear unbiased prediction procedures that account for heterogeneity are reviewed. The consequences of incorrectly assuming homogeneity for evaluation are demonstr...

This paper tests whether state school finance reform alters neighborhood income homogeneity. One implication of the Tiebout model is that within-community homogeneity declines as a result of an exogenous decrease in the ability of jurisdictions to set local tax and expenditure levels. The property tax revolt and the school finance equalization reform of the 1970s and 1980s offer a test of the r...

Testing hypotheses on covariance matrices has long been of interest in statistics. The test of homogeneity is very often a preliminary step in discriminant analysis, cluster analysis, MANOVA, etc. In this article we propose nonparametric tests which are based on the eigenvalues of the differences among the sample covariance matrices after a common rescaling. Three resampling techniques for calc...

This study aims to formulate and evaluate the preparation of an anti-aging cream made from astaxanthin. Astaxanthin has antioxidant activity, as well other carotenoid compounds. shows more significant activity than ?-carotene; thus,developing astaxanthin compounds in preparations is necessary. type experimental laboratory research compares three different concentrations compounds, including for...

Cosmological observations suggest that the transition scale to homogeneity is not smaller than' (200−300)h−1 Mpc (h is the Hubble parameter in units 100 km s−1 Mpc−1), and that in addition this transition scale seems to decrease with increasing redshift. Nevertheless, these claims are highly uncertain, and call for further observational tests allowing to verify the homogeneity even on scales' (...

Background: This research aimed to estimate the effect of instructional multimedia on communicational skills learning of autism students at 3rd grade elementary school in Tehran. Methods: The method of this research was quasi- experimental and population was all the autism students at 3rd grade elementary school in Tehran.16 students were chosen by accessible sampling and they were randomly div...