In recent years, the environmental problems in China have become more and more serious,
for example, resource depletion, environmental pollution, ecological imbalance, and so on …

By using Pythagorean fuzzy set (PFS), people can quantitatively describe and process
information with fuzziness, and then make reasonable and effective judgments or decisions …

Emergency decision making is critically important for countries or communities to enhance
the effectiveness and validity of the emergency response, which can greatly lower …

The uncertainty in the data information for decision making is a most challenging and critical
fear. In order to reduce the uncertainty in the decision making expert information for decision …

For this paper, to consider both Bonferroni mean (BM) operator and two-tuple linguistic
Pythagorean fuzzy numbers (2TLPFNs), we combine the weighted BM (WBM) operator, the …

Recently, the TODIM (an acronym in Portuguese for Interactive Multi-criteria Decision
Making) approach, which can characterize the decision makers' psychological behaviors …

Pythagorean fuzzy sets (PFSs) accommodate more uncertainties than Lx the intuitionistic
fuzzy sets and hence its applications are more extensive. Under the PFS, the objective of …

Pythagorean fuzzy sets are an extension of the intuitionistic fuzzy sets, and it also
overcomes the limitations of the intuitionistic fuzzy sets. The entropy of a Pythagorean fuzzy …

Aggregation operators are mathematical functions and essential tools of unifying the several
inputs into single valuable output. The purpose of this paper is to analyze the aggregation …

In this paper, we utilize Hamacher operations and power aggregation operators to develop
some Pythagorean fuzzy Hamacher power aggregation operators: Pythagorean fuzzy …