where: [[theta].sub.0]: the efficiency score for the [DMU.sub.0], x: input, y: output, u: the output weights, v: the input weights, and m, s, and n are number of inputs, outputs and DMUs, respectively.
After performing DEA and obtaining the performance by each DMU, the Malmquist index is used to measure whether the productivity of DMUs increase or decrease over time.
(ii) Presenting a two-step robust method to deal with different scenarios for ideal DMU (it is possible to have more than one DMU with unit efficiency in each period and therefore different combinations of DMUs result in different scenarios)
Para tal, o artigo propoe a utilizacao do algoritmo de DMUs artificiais (DMU--decision making units) proposto por Diallo et al., (2008), esta abordagem tem carater inovador ja que nao foi utilizada na literatura DEA para fundos.
This technique is equally beneficial for commercial and non-commercial DMUs. Both input-oriented (IO) and output-oriented (OO) versions of the DEA methodology have been applied to the data for the sake of efficiency score comparison.
As for the Valley lines - sure we are getting rid of the two and four-axle DMUs but we are getting class 315s which were built in 1980 so they are hardly new.
Leaving school aged 18, he studied music at Newcastle University, where he was awarded a DMus and a MLitt degree, based on his thesis on the life and career of the great Dennis Brain.