This special issue of Business Systems Research (SI of the BSR) is co-published by the Slovenian Society INFORMATIKA - Section for Operational Research (SSI-SOR) and highlights recent advances in Operations Research and Management Science (OR /MS), with a focus on linking OR /MS with other areas...

Purchasing and procurement managers should make informed decisions in selecting materials at the right time, in sufficient quantities, and at affordable prices. Supplier selection and order allocation (SSOA) is a vital aspect of purchasing and procurement processes. In this research, the...

We study the harmonization of the base remuneration for the Members of the European Parliament (MEPs) who were previously paid like national parliamentarians implying large differences between the delegations from the 27 member countries. Based on detailed information on individual MEPs between...

Previous empirical studies analysing the effect of electoral systems on growth lack unanimous answers as they miss-specify mixed systems in the empirical setting, that is, they neglect to consider the proportionality degree of mixed electoral systems. This work supplies the missing answers by...