By developing the level of life in societies, the need for new resources of energy becomes more important. In almost all cases, the aim is to convert one form of energy to the electrical form. With advances of technology ...

Sohrabi and Nalchigar (2010) proposed a new data envelopment analysis (DEA) model to identify the most efficient decision-making unit (DMU) in presence of imprecise data. In this paper, it is shown that the proposed model ...

Daily sunshine duration is one of the factors influencing the size of solar panels in a photovoltaic system. When the system is designed and the number of system components is calculated, the average of sunshine hours is ...

The traditional economic production quantity (EPQ) model assumes that during the production process no imperfect item is produced. But in the real production system, due to imperfect production process or other factors, ...

In this paper, integrated direct and reverse logistics considering production, distribution, customer, devastation, retrieval centers under uncertainty are developed. In this model, cost parameters are not certain, thus ...

This paper aims to present a model for agile supply chain model in construction enterprises with performance evaluation of suppliers and contractors. Management and selection of suppliers and contractors plays an important ...

Fault tolerance is one of the important issues in industries, such as transportation, military, chemical and nuclear sectors. Reliability and safety are two vital attributes of fault tolerant systems, and redundancy is a ...

This paper presents a multi-attribute decision-making model to rank and select the best zones of the city of Tehran in order to add new emergency services. The purpose of this decision-making problem is to prioritize the ...

This paper presents a new mathematical model for a combined manpower vehicle routing problem, in which working teams are considered as servers. Having teams with different competency affects the service duration and cost ...

Many serious accidents have happened in the world, in which systems have been large-scale and complex, and caused heavy damage and a social sense of instability. Furthermore, advanced nations have almost finished public ...

One of important issues in designing a supply chain is supplier selection. This issue is complicated, because each supplier should satisfy some criteria from buyer and choosing among them is actually a multi criteria ...