امين رضا كلانتري خليل اباد

Agricultural and horticultural products, as one of the vital parts of human life, play an important role in meeting people's needs for essential food. Accordingly, governments spend a lot of financial resources, draw short and long-term goals and organize effective logistics activities to transfer all kinds of products to their communities. Food waste and environmental risks, operational risks and disruption caused by pests are factors that severely affect the agri-food supply chain activities. In this regard, this research presents three mathematical models for designing and planning the pomegranate fruit supply chain. The first mathematical model considers the objective functions of minimizing the net present value of costs and carbon emissions. To benefit from circular economy, pyrolysis process has been introduced as an alternative to compost production. A new version of the multi-stage stochastic programming approach called risk-neutral and risk-averse multi-stage stochastic programming has been developed to deal with supply side uncertainty. The second mathematical model designs a green and responsive closed-loop supply chain network for pomegranate fruit. In order to realize the concept of circular economy, the copyrolysis method has been used in this model. Also, constraints related to the management of water consumption and greenhouse gas emission have been taken into consideration. To model the dynamic spread of pests, a new approach called elastic p-robust multi-stage stochastic programming has developed. Also, a method for column-wise robust optimization for modeling the demand uncertainty and a new type of uncertainty for modeling the effect of pest propagation on producer capacity have developed. The third mathematical model presents a multi-objective distributionally robust model for design of the pomegranate supply chain under pest disruption risk. Some supply chain management angles including lean, agility, sustainablility, resilience and intelligence are considered to achieve the viability paradigm. In the field of sustainability, social dimensions have been taken into consideration. In the dimension of resilience, the synergistic effect of implementing resilience strategies and minimizing non-reliency measures has been used. The performance of all presented models and proposed approaches has been eva‎luated in a real case study located in Yazd province. The findings highlight the importance of dealing with pest risk in agri-food supply chains. The results also confirm the effectiveness of the various uncertainty modeling approaches presented in the current study compared to the classical methods. Also, quantitative observations show that combining the resilience and social rsponsibility objective functions improves the network's non-resiliency index by 36.5% and adding resilience strategies reduces costs by 69%.

زنجيره تامين غذاي كشاورزي , اقتصاد چرخشي , پايداري , تاب آوري , عدم قطعيت , ريسك انتشار آفات , انار

Agri-food supply chain , Circular economy , Sustainability , Resilience , Uncertainty , Pest spread risk , Pomegranate

amin reza kalantari khalil abad

farnaz barzinpour