This article developed an approached model of congestion, based on relaxed combination of inputs, in stochastic data envelopment analysis (SDEA) with chance constrained programming approaches. Classic data envelopment analysis models with deterministic data have been used by many authors to identify congestion and estimate its levels; however, data envelopment analysis with stochastic data were...

The stochastic data envelopment analysis (SDEA) was developed considering the value ofinputs and outputs as random variables. Therefore, statistical distributions play an importantrole in this regard. The skew-normal (SN) distribution is a family of probability densityfunctions that is frequently used in practical situations. In this paper, we assume that the inputand output variables are skew-...

This paper proposes a new model which provides some insights on using Stochastic Data Envelopment Analysis (SDEA) technique in the future performance appraisal for similar units of an organization. This research contributes to advance current knowledge by proposing new model in which, regardless of having benefits of DEA, resolve some head problems of the context. For instance: 1) the efficienc...

Accurate production efficiency evaluation can assist enterprises in adjusting strategies, improving efficiency, and, thereby, weakening environmental impacts. However, the current studies on do not accurately consider interactions inside system parallel processes. Based concept of manufacturing service, this paper describes process a complex product (CoPS) with service chain. An calculation mod...

Chlamydia trachomatis is the cause of several diseases such as sexually transmitted urogenital disease and ocular trachoma. The pathogen contains a small genome yet, upon infection, expresses two enzymes with deubiquitinating activity, termed ChlaDUB1 ChlaDUB2, presumed to have redundant deubiquitinase (DUB) function because similarity primary structure their catalytic domain. Previous studies ...

  Performance evaluation of universities is an important issue between researchers. Classic data envelopment analysis (DEA) models with deterministic data have been used by many authors to measure efficiency of universities in different countries. However, DEA with stochastic data are, rarely used to measure efficiency of universities. In this paper, input oriented model in stochastic data env...