This paper is concerned with the problem of classifying tuples natural numbers a1,…,aK and b1,…,bL such that ratio factorials ∏i=1K(ain)!∕∏j=1L(bjn)! an integer for all n. A complete solution to this only known in case L−K=1, due work Bober building on observation Rodriguez Villegas, which relies Beukers–Heckman classification algebraic hypergeometric functions. We provide alternative proof res...

Considering the geometric nonlinearity and imperfection of stiffened cylinders, generalized similitude conditions scaling laws for axial compression post-buckling are established by applying transformation to total energy structure. The similarity cylinders is numerically analyzed, scale laws, through innovative application stiffness formulas deformation factor. Based on three type geometrical ...

The transitional free convection flow and heat transfer within attics in cold climate are investigated using 3-D numerical simulations for a range of Rayleigh numbers from 103 to 106 height-length ratios 0.1 1.5. development process the attic could be classified into three-stages: an initial stage, fully developed stage. Flow structures different stages including transverse longitudinal rolls c...

Evidence of stock return predictability by financial ratios is still controversial, as documented by inconsistent results for in-sample and out-of-sample regressions and by substantial parameter instability. This paper shows that these seemingly incompatible results can be reconciled if the assumption of a fixed steady-state mean of the economy is relaxed. We find strong empirical evidence in s...

Purpose: The objectives of the study were to analyse financial growth Oman Cement Company (OCC) critically investigate performance along with its in cement industry. Design/methodology/approach: data was collected from five years’ statements between 2016 and 2020 listed Muscat Security Market analysis carried out applying different ratios – profitability ratios, liquidity management efficien...

A risk ratio (sometimes called relative risk, both abbreviated to RR) and an odds ratio (OR) are ways of expressing a comparison between two proportions. For example, in this paper, there are two randomised groups in the trial, women in the lateral position and women in the supported sitting position in the passive second stage of labour. The authors wanted to compare the proportions of instrum...