This research aims at presenting a fuzzy model to evaluate and select Six-Sigma projects.  For this purpose, a model of fuzzy analytic network process (ANP) was designed to consider the relation and mutual impact among the factors. In order to evaluate the projects, nine sub-criteria were considered which were classified into three categories of business, finance and procedural ones. Also to co...

in order to evaluate the relationship between the concentration of welding fumes and cigarette smoke on the bronchopulmonary system function, a comparative study of spirometric measurements in 100 welders and 50 healthy volunteers was performed in an automobile manufacturing company. two groups of workers were matched according to their age, height, smoking habit, years of service and social cl...

Malmquist Productivity Index (MPI) is one of the most famous indices, which is used for estimating the productivity change of a Decision Making Unit (DMU) during the time. Virtually any empirical study that uses MPI, reports average of the productivity indices they estimate to represent the overall tendency in productivity changes. In such a case, productivity indices of a DMU are considered wi...

background: welding is one of the most exercised industrial processes which welders are exposed to chemical and physical hazardous agents. this study was conducted to evaluate occupational and environmental exposures to aerosols generated by welding processes in a factory. methods: a total of 28 samples of aerosols were collected at 4 different locations including indoor, outdoor, source of wel...

Abstract In recent years, with navigation, aviation, chemical manufacturing, and automobile bodies increasing requirements for lightweight, high efficiency, energy saving, quality in the selection of materials manufacturing process are also improved. However, there is an unavoidable elastic deformation plastic bending panel veneer, accuracy workpiece impacted by spring back phenomenon, which ca...

Automobile safety is becoming an important subject because of the large number of electronic systems being integrated within a System on Chip (SoC) and with the use of current state-of-theart technology, safety is becoming an even bigger challenge. ISO 26262 is a mandatory standard to ensure the safety performance in electronic systems in automobile. This standard also provides the required tar...

The manufacturing of the automobile industry is highly dependent on market demand. Therefore, impact changes in demand supply chain worthy attention. This article considers application flexible production management to industry. Simulation analysis research analyzes overall differences behavior different entities chain. By examining possible consequences these impacts, it provides targeted opti...