In this paper, the authors investigated the various factors, which can affect the performance of a turbofan engine. For this, the various subunits of a turbofan engine like inlet duct, compressor, combustion chamber, liner, turbine, exhaust nozzle etc. are investigated to find its various reliability characteristics through Markov process and supplementary variable technique (SVT). The main adv...

Bell's degree-variance Var$!{}_{B}$ for a graph $G$, with the degree sequence ($d_1,d_2,cdots,d_n$) and size $m$, is defined as$Var!_{B} (G)=frac{1}{n} sum _{i=1}^{n}left[d_{i} -frac{2m}{n}right]^{2}$.In this paper, a new version of the irregularity measures of variance-type, denoted by $Var_q$, is introduced and discussed. Based on a comparative study, it is demonstrated that the n...

this article has tried to investigate the concept of cultural capital. hence, the question is that how the concept of cultural capital in internal and external researches has been measured? and what proportion of different variables has reported with cultural capital concept? in this paper relying on internal and external researches, first, the concept of cultural capital and its dimensions hav...

objective: sleep complaints are common among iranian chemically-injured veterans. the growing body of research has investigated (in) equalities between such subjective complaints and objective sleep records. moreover, sleep complaints are associated with depressive symptoms. depressive symptoms, also, have been frequently reported in chemically-injured veterans. therefore, the purpose of this p...