In real world, uncertainty is a important factor to take into account otherwise the schedules face the risk of failing, and/or to become unviable. Therefore, when creating schedules we must consider theuncertainty to prevent or repair the undesired effects. In this work we make a review of scheduling with uncertainty to respond the following questions: How can we represent the uncertainty? and What methodsdo exist to treat uncertainty? Likewise, we show the different ways in how the uncertainty is present in areas like the petrochemistry, the production, the transport, the energy, etc. We also make a study about two questions that all scheduling must respond: When to programme? and how to programme?

In real world, uncertainty is a important factor to take into account otherwise the schedules face the risk of failing, and/or to become unviable. Therefore, when creating schedules we must consider theuncertainty to prevent or repair the undesired effects. In this work we make a review of scheduling with uncertainty to respond the following questions: How can we represent the uncertainty? and What methodsdo exist to treat uncertainty? Likewise, we show the different ways in how the uncertainty is present in areas like the petrochemistry, the production, the transport, the energy, etc. We also make a study about two questions that all scheduling must respond: When to programme? and how to programme?

The purpose of this work concerns about Metaheuristics Tabu Search (TS). It deals with optimizing logistic and environmental cost by delivery of goods and waste pickup generated in Trujillo-Peru. The problem arises in two levels, which are focused on locating facilities and creating routes to minimize expenses and produce the lowest amount of CO2. The TS was implemented in the C programming language and assessed for individual instances, it consists on real data of the geographical coordinates of the providers, facilities and customers of the city, simulated data of orders, collections and cost of facilities, among others. The results for different instances show that satisfactory solutions were found in acceptable time, achieving the location of facilities and the creation of routes with the least possible cost and the least amount of pollution. This work may be useful for other cities ...

Our gratitude to the Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica – FONDECYT.

Our gratitude to the Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica - Fondecyt, for financing the research in progress.

This paper presents a literature review of the Vehicle Routing Problem (VRP) applied to natural disasters in South America. The review focuses on the last ten years (2009 - 2019), in free access and paid databases.83% are in Spanish and 17% in English. Most of the investigations deal with shipping and delivery of products, but there are also papers on programming and routing of personnel, such as volunteers, humanitarian logistics specialists, medical personnel, and military personnel. In the review, several characteristics of the problem have been taken into account, such as, the type of disaster, the VRP model used, the solution method employed, the use or not of parameters with uncertainty. The 65 % of investigations were found in databases of free access, 83 % are deterministic models, the most used model is the classic VRP, the exact solution methods are the most used, followed by t...

This paper presents a literature review of the Vehicle Routing Problem (VRP) applied to natural disasters in South America. The review focuses on the last ten years (2009 - 2019), in free access and paid databases.83% are in Spanish and 17% in English. Most of the investigations deal with shipping and delivery of products, but there are also papers on programming and routing of personnel, such as volunteers, humanitarian logistics specialists, medical personnel, and military personnel. In the review, several characteristics of the problem have been taken into account, such as, the type of disaster, the VRP model used, the solution method employed, the use or not of parameters with uncertainty. The 65 % of investigations were found in databases of free access, 83 % are deterministic models, the most used model is the classic VRP, the exact solution methods are the most used, followed by t...

Este trabajo ha sido financiado por el Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica del Perú (FONDECYT), Proyecto 125-2018-FONDECYT-BMIADT-AV.