Sobhan Mostafayi Darmian

• PhD Candidate
• Norwegian University of Science and Technology

Supply chain design and planning during product development (PD) are crucial for successful supply chain management. Despite its importance, there exists a significant gap in the literature regarding the structure required for making design and planning decisions during PD processes. This applies especially to circularity, which ultimately affects...

This study investigates the agro-processing industries potential to develop the local economic in the east of Iran as a developing country based on the sustainable development criteria including economic, social, environmental, and managerial indices. For this purpose, a hybrid multi-criteria decision-making model based on fuzzy SWARA and fuzzy EDA...

This paper is based on a project of developing small and medium-sized enterprises in South Khorasan, Iran. A combination of multiple criteria decision making and robust multi-objective optimization is used for prioritizing industrial clusters and optimally assigning governmental funds. First, criteria for evaluating clusters are weighted using the...

Waste collection management plays a crucial role in controlling pandemic outbreaks. Electric waste collection systems and vehicles can improve the efficiency and effectiveness of sanitary processes in municipalities worldwide. The waste collection routing optimization involves designing routes to serve all customers with the least number of vehicle...

One of the most destructive effects of pandemics and epidemics outbreak is the severe deficiency of basic goods needed by society, especially in underdeveloped and developing countries. Therefore, designing an efficient managerial model for making operative modifications in logistics networks beside the governmental financial support policies is co...

In this paper, we address a districting problem motivated by a real-world case study to partition residential areas of a region for a healthcare system operation under interval demand uncertainty of health services. A mixed-integer programming model is presented based on the graph theory that enforces contiguity constraints on districts in addition...

In this research, a mixed-integer nonlinear programming model is formulated to design cellular manufacturing systems (CMSs) in multiple plants in a dynamic condition. The proposed mathematical model integrates significant manufacturing characteristics in designing CMSs along with the main strategies of production planning (PP) and location–allocati...

This paper presents a multi-objective location-districting optimization model for sustainable collection of municipal solid waste, motivated by strategic waste management decisions in Iran. The model aims to design an efficient system for providing municipal services by integrating the decisions regarding urban area districting and the location of...

In this paper, a solar site selection problem motivated by a real-world case study to determine sustainable locations for establishing solar sites in the east of Iran is addressed. For this purpose, a hybrid multi-criteria decision-making (MCDM) approach is proposed that adopts best-worst method (BWM) to weight criteria and sub-criteria extracted f...

In this study, we propose a new multi-objective mathematical model for designing compact, balanced, and contiguous districts in healthcare systems. The objective functions minimize districting heterogeneity and the implementation cost of monitoring plans for promoting hygiene and public health. Expert teams perform these plans periodically by maxim...

In this paper, the problem of population districting in the health system of South Khorasan province has been investigated in the form of an optimization problem. Now that the districting problem is considered as a strategic matter, it is vital to obtain efficient solutions in order to implement in the system. Therefore in this study two meta-heuri...

The tenacity of spun yarns is related to many process parameters and fiber properties. Different types of predictive models have been developed to predict the spun yarns tensile strength; however, no investigation has yet been carried out on prediction of siro-spun yarns tensile strength. This is due to the fact that the relationship between yarn s...

Increasing the profits of producers solely or alternatively minimizing production costs for manufacturers were considered in classical models for planning and designing cellular manufacturing systems. Provided that, with the expansion of manufacturing systems and the increasing demand for products, devastating effects of increasing levels of greenh...