Private tutoring has become popular all over the world. However, the evidence on the effect of private tutoring is inconclusive, therefore, this paper attempts to improve the existing literature by using nonparametric bounds methods to find out if private tutoring yields any substantial returns...

In the current literature, there are several studies, which the supplier selection is typically a Multi Criteria Group Decision Making problem. Several solutions for the above problem are proposed (from simple approaches; like, Borda, Condorcet, etc., to complex ones; like, Multiple Criteria...

Today, long-term relationship plays a vital role in supplier selection for supply chain management. The main reason is that long-term relationships can act as a mechanism for shifting the chains strategic focus from price to value and priorities long-term benefit over short-term gains. Since, in...