Many multivariate quality control techniques are used for multivariate variable processes, but few work for multivariate attribute processes. To monitor multivariate attributes, controlling the false alarms (type I errors) and considering the correlation between attributes are two important...

The yearly evaluation at the structural units’ level and of National Hard Coal Company based on the technical and economical indicators allow characterizing these units, being able to offer an ensemble image regarding the future dimension and evolution of the mining activity in Jiu Valley....

Existing evidence suggests that preferences are affected by whether a price is presented as one all-inclusive expense or partitioned into a set of mandatory charges. To explain this phenomenon, we introduce a new mechanism whereby price partitioning affects a consumer's perception of the...