We consider a real problem faced by a large company providing repair services of office machines in Santiago, Chile. In a typical day about twenty technicians visit seventy customers in a predefined service area in Santiago. We design optimal routes for technicians by considering travel times,...

We study urban traffic equilibrium involving three classes of agents: car users, bus users or passengers and bus operators. A partially unregulated transit system is assumed, where bus fares are exogenously determined by municipal or transportation authorities, but bus operators are allowed to...

We consider the Frank-Wolfe algorithm in the context of the traffic assignment problem. The slow-convergence characteristics close to the optimum solution of this popular approach are well known. Several proposals have improved on the original method by modifying the search direction. We propose...

A partial static competitive equilibrium theory is presented and the corresponding constrained logit model specified for a given scenario of policies, which yields the expected equilibrium locations, prices of schools, and students’ school choices. Rational students differentiated by...

Deterministic mine planning models along a time horizon have proved to be very effective in supporting decisions on sequencing the extraction of material in copper mines. Some of these models have been developed for, and used successfully by CODELCO, the Chilean state copper company. In this...

Wild edible mushroom demand has increased substantially in OECD countries in the last few years. Nevertheless, few studies have been published in recent years on these markets. The main objective of this paper is to characterise the saffron milk cap (Lactarius deliciosus Fr.) demand in Spain....

Copaíba oleoresin is a medicinal product obtained from several species of Copaifera trees (Copaifera spp.), and it is used for its healing and anti-inflammatory properties. Oleoresin is extracted via holes drilled into the trunks of copaíba trees, which are then plugged and periodically...