Variation reduction in multistage assembly processes is an important but challenging issue for quality control. It is desirable to minimize the final product variance from a system level. Fruitful research has been conducted on this issue based on the fixed assembly order. However, the variability of parts can be affected by different assembly order. In this paper, we propose a quality control ...

In order to guarantee the successful execution of service processes in cloud computing, it is important to dynamically optimise service processes with temporal constraints at runtime. Recently, there exist some works related to this issue. However, they cannot adapt to mixture distributed situations where distributions of service durations are complex and diverse, and they seldom consider the a...

since data envelopment analysis (dea) introduced in 1970s, it has been widely applied to measure the efficiency of a wide variety of production and operation systems. recently dea has been extended to examine the efficiency of decision making units (dmus) with two-stage network structures or processes, where the outputs from the first stage are intermediate measures that make up the inputs of t...

The current study investigates performance in two-stage production systems through the measurement of capacity utilization (CU). In short-run, the degree of capacity utilization depends on the ability of decision making units to utilize fixed production factors. To develop this indicator in two-stage production processes, a modified SBM network DEA model is proposed. A numerical example is also...

Network data envelopment analysis (NDEA) is an extension of standard DEA that models the efficiency assessment decision-making units (DMUs) by considering their internal structure. While in DEA, DMU regarded as a single process, NDEA, viewed network interconnected sub-processes (stages, divisions), where flow intermediate products (measures) essential assessment. In prevalent conventional metho...

many studies have been conducted to determine the efficiency of two-stage network structures in the recent years. the two-stage network with additional inputs to the second stage, in which the second stage is independent of the first stage are one of these structures. thus, there is a need for a model capable of calculating the efficiency of two-stage structures as well as efficiency of each st...