Background and Objectives: In this paper, a real life nurse scheduling model is described based on the conditions in Iranian hospitals such as monthly shift rotation, consecutive morning and evening shifts and consecutive evening and night shift.   Methods: The developed model considers both hospital constraints and nurses’ preferences. Hospital constraints include assigning adequate qualifie...

Data Envelopment Analysis (DEA) is an eciency measurement tool for evaluation of similar Decision Making Units (DMUs). In DEA, weights are assigned to inputs and outputs and the absolute eciency score is obtained by the ratio of weighted sum of outputs to weighted sum of inputs. In traditional DEA models, this measure is also equivalent with relative eciency score which evaluates DMUs in compar...

The performance of the units is defined as the ratio of the weighted sum of outputs to the weighted sum of inputs. These weights can be determined by data envelopment analysis (DEA) models. The inputs and outputs of the related (Decision Making Unit) DMU are assessed by a set of the weights obtained via DEA for each DMU. In addition, the weights are not generally common, but rather, they are ve...

data envelopment analysis (dea) is an eciency measurement tool for evaluation of similar decision making units (dmus). in dea, weights are assigned to inputs and outputs and the absolute eciency score is obtained by the ratio of weighted sum of outputs to weighted sum of inputs. in traditional dea models, this measure is also equivalent with relative eciency score which evaluates dmus in com...

The present manuscript describes a computational model employed to characterize the performance and emissions of commercial marine diesel engine. This analyzes several pre-injection parameters, such as starting instant, quantity, duration. goal is reduce nitrogen oxides (NOx), well its effect on consumption. Since some parameters considered have opposite effects results, work proposes MCDM (Mul...

Important and complex spatial decisions, such as allocating land to development or conservationoriented goals, require information and tools to aid in understanding the inherent tradeoffs. They also require mechanisms for incorporating and documenting the value judgements of interest groups and decision makers. Multiple-criteria decision analysis (MCDA) is a family of techniques that aid decisi...

Membrane technologies for the separation of mixtures have gained an extensive worldwide attraction in the modern industrialized world. They have many industrial and medical applications such as water desalination, wastewater reclamation, gas separation, food and medical applications. However, even though all these applications have their own efficiency and market, the selection of priority appl...

As large amounts of data are circulated both from users to a cloud server and between users, privately aggregating the shared is critical. This article considers problem private weighted sum aggregation with secret weights, where an aggregator wants compute local some agents. Based on privacy requirements posed weights, there different secure multiparty computation schemes exploiting kno...