The operation limitations of the value chain have occurred in the Internet times obvious, and the value network is a new concept to develop the useful and discard the useless for the value chain. As the new concept, the value network has been a leading concept in the world. Based on the analysis of the limitations of the value chain, the new research results of the value network in the theoreti...

where x and y are positive variables and r and s are real variables. They are also called sum mean values. There has been a lot of literature such as [3, 4, 5, 6, 9, 10, 11, 12, 13, 19, 20, 21] and the related references therein about inequalities and properties of Gini means. The aim of this paper is to prove the monotonicity and logarithmic convexity of Gini means G(r, s;x, y) and related fun...

The X-ray fluorescence spectrometry and the MA.BM.006 reference spectrophotometric methods were used to determine the content of SiO2 (%) in bauxites from different deposits. The treatment of samples prior to the analysis involved the following steps: annealing, melting using the borax method,  and the formation of beads. Certified reference bauxite samples were used for the cali...

background: considering that establishment of reference value of nuchal translucency (nt)-related to the crown rump length (crl) during the first trimester will be helpful for determining an appropriate cutoff level for  screening of increased nt thickness-related abnormalities, we determined the nt thickness and investigated its relation with diff erent chromosomal and nonchromosomal abnormali...