Blar i Discussion papers (FOR) på forfatter "Guajardo, Mario"
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Autonomous vessels: State of the art and potential opportunities in logistics
Gu, Yewen; Goez, Julio C.; Guajardo, Mario; Wallace, Stein W. (Discussion paper;6/19, Working paper, 2019-09-05)The growth in technology on autonomous transportation systems is currently motivating a number of research initiatives. This paper first presents a survey of the literature on autonomous marine vessels in general. By ... -
Common mistakes in computing the nucleolus
Guajardo, Mario; Jörnsten, Kurt (Discussion paper;15/14, Working paper, 2014-04)Despite linear programming and duality have correctly been incorporated in algorithms to compute the nucleolus, we have found mistakes in how these have been used in a broad range of applications. Overlooking the fact ... -
Cooperation of customers in traveling salesman problems with profits
Osicka, Ondrej; Guajardo, Mario; Jörnsten, Kurt (Discussion paper;17/19, Working paper, 2019-11-22)The traveling salesman problem and its variants are among the most studied problems in the literature on transportation and logistics. In one of these variants known as the profitable tour problem [2], a profit-maximizing ... -
Cooperative game-theoretic features of cost sharing in location-routing
Osicka, Ondrej; Guajardo, Mario; van Oost, Thibault (Discussion paper;11/18, Working paper, 2018-09-24)This article studies several variants of the location-routing problem using a cooperative game-theoretic framework. The authors derive characteristics in terms of subadditivity, convexity, and non-emptiness of the core. ... -
Format and schedule proposals for a FIFA World Cup with 12 four-team groups
Guajardo, Mario; Krumer, Alex (Discussion paper;2/23, Working paper, 2023-03-13)After the expansion of the FIFA World Cup from 32 to 48 teams starting from the 2026 edition, the initial proposal was to split the 48 national teams into 16 groups of three. Among other drawbacks, this proposal provides ... -
Inventory management of spare parts in an energy company
Guajardo, Mario; Rönnqvist, Mikael; Halvorsen, Ann Mari; Kallevik, Svein Inge (Discussion paper;06/12, Working paper, 2012-06)We address a problem of inventory management of spare parts in the context of a large energy company, producer of oil and gas. Spare parts are critical for assuring operational conditions in offshore platforms. About ... -
Speciality oils supply chain optimization: from a decoupled to an integrated planning approach
Guajardo, Mario; Kylinger, Martin; Rönnqvist, Mikael (Discussion paper;03/12, Working paper, 2012-03)We study a problem of tactical planning in a divergent supply chain. It involves decisions regarding production, inventory, internal transportation, sales and distribution to customers. The problem is motivated by the ...