the decision to buy, sell, design and construct residential apartments is a complex process due to a combination of multiplequalitative and quantitative factors. it thus requires a great deal of costs and time for decision makers in this market. identifying these factors and determining the priority of them are importance for selectingan apartment. the aim of current research is to identify the...

The SIR(D) epidemiological model is defined through a system of transcendental equations, not solvable by elementary functions. In the present paper those equations are successfully replaced approximate ones, whose solutions given explicitly in terms functions, originating, piece-wisely, from generalized logistic functions: they ensure exact (in numerical sense) asymptotic values, besides to be...