During the recent COVID-19 pandemic crisis, several high-income countries pursued vaccine nationalism (i.e., my country first approaches for vaccine distribution), leading to an even wider income inequality between rich and poor countries. This significantly challenged the poorer countries'...

Purpose - The paper aims to propose a practical model for market segment selection and evaluation. The paper carries out a technique of order preference similarity to the ideal solution (TOPSIS) approach to make an operation systematic dealing with multi-criteria decision- making problem....

The goal programming (GP) is a well-known approach applied to multi-criteria decision making (M-DM). It has been used in many domains and the literature offers diverse extensions of this procedure. On the other hand, so far, some evident analogies between M-DM under certainty and scenario-based...

This paper aims to determine the susceptible size used in the mathematical model that predicts the epidemic curve. It also aims to ascertain the age of the epidemic and its reliability system, further suggesting optimal decisions. This paper employs the mathematical induction and deduction...