Data envelopment analysis (DEA), a popular linear programming technique is useful to rate comparatively operational efficiency of decision making units (DMU) based on their deterministic (not necessarily stochastic) input-output data. Only when the input-output data are stochastic (preferably...

Morris (1982, 1983) shows that there exists only six distributions with variance as a quadratic function of the mean, and calls the group natural exponential-quadratic variance family (NEQVF). This note discovers that in NEQVF there are actually two factions which we call linear and nonlinear...

At some point in time during a post-surgery period, an anesthesiologist may intervene using a medication to quicken a patient’s conscious-recovery time. An assessment of such intervention methods has clinical importance. One performs an extension of the exponential model to address this issue....