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The purpose of this paper is to introduce a three-echelon multimodal transportation problem applied to a humanitarian logistic case study that occurred in Mexico.

This study develops a methodology combining a transshipment problem and an adaptation of the multidepot heterogeneous fleet vehicle routing problem to construct a mathematical model that incorporates the use of land-based vehicles and drones. The model was applied to the case study of the Earthquake on September 19, 2017, in Mexico, using the Gurobi optimization solver.

The results ratified the relevance of the study, showing an inverse relationship between transportation costs and delivery time; on the flip side, the model performed in a shorter CPU time with medium and small instances than with large instances.

While the size of the instances limits the use of the model for big-scale problems, this approach manages to provide a good representation of a transportation network during a natural disaster using drones in the last-mile deliveries.

The present study contributes to a model that combines a vehicle routing problem with transshipment, multiple depots and a heterogeneous fleet including land-based vehicles and drones. There are multiple models present in the literature for these types of problems that incorporate the use of these transportation modes; however, to the best of the authors’ knowledge, there are still no proposals similar to this study.

The purpose of this paper is to explore a novel storytelling approach that investigates lived experience at the intersection of motherhood/caregiving and Ph.D. pursuits. The paper contributes to the feminist tradition of writing differently through the process of care that emerges from shared stories.

Using a process called heartful-communal storytelling, the authors evoke personal and embodied stories and transgressive narratives. The authors present a composite process drawing on heartful-autoethnography, dialogic writing and communal storytelling.

The paper makes two key contributions: (1) the paper illustrates a novel feminist process in action and (2) the paper contributes six discrete stories of lived experience at the intersection of parenthood and Ph.D. studies. The paper also contributes to the development of the feminist tradition of writing differently. Three themes emerged through the storytelling experience, and these include (1) creating boundaries and transgressing boundaries, (2) giving and receiving care and (3) neoliberal conformity and resistance. These themes, like the stories, also became entangled.

The paper demonstrates how heartful-communal storytelling can lead to individual and collective meaning making. While the Ph.D. is a solitary path, the authors' heartful-communal storytelling experience teaches that holding it separate from other relationships can impoverish what is learnt and constrain the production of good knowledge; the epistemic properties of care became self-evident.