Introduction. Performance of nonuniformity correction approaches is usually evaluated indirectly, on the basis of remaining tissue intensity variability rather than the actual estimated bias field. Common indirect measures include coefficient of variation of white matter CV(WM) and gray matter CV(GM), and coefficient of joint variation CJV between WM and GM [1]. However, disagreements between i...

Crop coefficients are a widely used and universally accepted method for estimating the crop evapotranspiration (ETc) component in irrigation scheduling programs. However, uncertainties of generalized basal crop coefficient (Kcb) curves can contribute to ETc estimates that are substantially different from actual ETc. Limited research with corn has shown improvements to irrigation scheduling due ...

We find the inconsistency of dimensional reduction and naive dimensional regularization in their applications to Chern-Simons type gauge theories. Further we adopt a consistent dimensional regularization to investigate the quantum correction to non-Abelian Chern-Simons term coupled with fermionic matter. Contrary to previous results, we find that not only the Chern-Simons coefficient receives q...

an accurate determination of evapotranspiration is required for many studies that involve estimation of the water balance. one methodology is the use of lysimeters. considering the semiarid climate of kerman province, in southeastern parts of iran, the only operating electronic weighing lysimeter in the country was used for calculating daily eto from april 2004 to march 2005 in three different ...

Solar radiation is the main source of energy on Earth’s surface. It very important for environment and ecology, water cycle crop growth. Therefore, it to obtain accurate solar data. In this study, we use highest temperature Tmax, lowest Tmin, average Tavg, wind speed U, relative humidity RH, sunshine duration H maximum Hmax as input variables construct a deep learning prediction model in Yellow...

In this paper procedures for estimating the sound absorption coefficient when the specimen has inherently low absorption are discussed. Examples of this include the measurement of the absorption coefficient of pavements, closed cell foams and other barrier materials whose absorption coefficient is nevertheless required, and the measurement of sound absorption of muffler components such as perfo...

OBJECTIVE To determine the effect of statistical correction for intra-individual variation on estimated urinary iodine concentration (UIC) by sampling on 3 consecutive days in four seasons in children. SETTING School-aged children from urban and rural primary schools in Harbin, Heilongjiang, China. PARTICIPANTS 748 and 640 children aged 8-11 years were recruited from urban and rural schools...

Water scarcity and salinity are important limitations for saffron (Crocus sativus L.) production in arid and semi-arid regions. The purpose of this research was to study the interaction effects of water salinity and deficit irrigation on the macroscopic water extraction model for saffron. The effect of salinity and water stress on root-water uptake coefficient was determined by additive and mul...

This paper investigated the relationship between expected inflation and nominal interest rates in Nigeria and the extent to which the Fisher effect hypothesis holds, for the period 1970-2012. We attempted to advance the field by testing the traditional closed-economy Fisher hypothesis and an augmented Fisher hypothesis by incorporating the foreign interest rate and nominal effective exchange ra...