Significant emergency measures should be taken until an emergency event occurs. It is
understood that the emergency is characterized by limited time and information, harmfulness …

The control of spreading of COVID-19 in emergency situation the entire world is a challenge,
and therefore, the aim of this study was to propose a spherical intelligent fuzzy decision …

In this article, we have introduced a new linguistic generalized spherical fuzzy set by
combining the idea of generalized spherical fuzzy set and linguistic fuzzy set. Linguistic …

The unprecedented coronavirus pandemic (COVID-19) is fluctuating worldwide. Since the
COVID-19 epidemic has a negative impact on all countries and has become a significant …

The emergency situation of COVID-19 is a very important problem for emergency decision
support systems. Control of the spread of COVID-19 in emergency situations across the …

The development of an emergency will cause difficulties in the selection of emergency
locations. The COVID-19 pandemic has caused the establishment of emergency medical …

The main objective of this study is to set up the foundations of a new model, namely,
complex spherical fuzzy (CSF) model that is highly proficient to express the two dimensional …

Complex spherical fuzzy set, an extended version of spherical fuzzy set, is a very powerful
tool to capture fourfold information (typically yes, no, abstain and refusal), in which the range …

Keeping in view the importance of new defined and well growing spherical fuzzy sets, in this
study, we proposed a novel method to handle the spherical fuzzy multi-criteria group …

Spherical fuzzy sets are an extension of various fuzzy concepts and demonstrate fuzzy
opinion using membership, abstinence, nonmembership and refusal degrees with relaxed …