Positive claims regarding the construct validity of the Occupational Information Network (O*NET) have been made for years; however, reports of high scale multicollinearity (e.g., LaPolice, Carter, & Johnson, 2008) raise doubts regarding discriminant validity. I factor analyzed four O*NET surveys; because each single-item scale is meant to define a distinct construct, evidence of construct valid...

Monounireducible nonhomogeneous semiMarkov processes are defined and investigated. The monounireducible topological structure is a sufficient condition that guarantees the absorption of the semi-Markov process in a state of the process. This situation is of fundamental importance in the modelling of credit rating migrations because permits the derivation of the distribution function of the time...