Browsing Discussion papers (FOR) by Author "Wallace, Stein W."
Now showing items 1-8 of 8
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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 ... -
Can an Emission Trading Scheme really reduce CO2 emissions in the short term? Evidence from a maritime fleet composition and deployment model
Gu, Yewen; Wallace, Stein W.; Wang, Xin (Discussion paper;10/18, Working paper, 2018-06-27)Global warming has become one of the most popular topics on this planet in the past decades, since it is the challenge that needs the efforts from the whole mankind. Maritime transportation, which carries more than 90% of ... -
Integrated maritime bunker management with stochastic fuel prices and new emission regulations
Gu, Yewen; Wallace, Stein W.; Wang, Xin (Discussion paper;13/16, Working paper, 2016-08-25)Maritime bunker management (MBM) controls the procurement and consumption of the fuels used on board and therefore manages one of the most important cost drivers in the shipping industry. At the operational level, a shipping ... -
Optimization-based Evacuation on Cruise Vessels Using Two-way Communication
Velez, Andres; Wallace, Stein W. (Discussion paper;16/23, Working paper, 2023-10-31)We study the evacuation of large cruise vessels under hazardous conditions. Based on a new sensor mesh technology, allowing wire-less two-way communication also when electricity is lost, we propose an optimization-based ... -
Scrubber: a potentially overestimated compliance method for the Emission Control Areas - The importance of involving a ship's sailing pattern in the evaluation
Gu, Yewen; Wallace, Stein W. (Discussion paper;13/17, Working paper, 2017-10-30)Different methods for sulphur emission reductions, available to satisfy the latest Emission Control Areas (ECA) regulations, may lead to different sailing patterns (route and speed choices of a vessel) and thus have ... -
Stochastic programs with binary distributions: Structural properties of scenario trees and algorithms
Prochazka, Vit; Wallace, Stein W. (Discussion paper;12/17, Working paper, 2017-10-27)Binary random variables often refer to such as customers that are present or not, roads that are open or not, machines that are operable or not. At the same time, stochastic programs often apply to situations where penalties ... -
The Impact of Bunker Risk Management on CO2 Emissions in Maritime Transportation Under ECA Regulation
Gu, Yewen; Wallace, Stein W.; Wang, Xin (Discussion paper;17/16, Working paper, 2016-11-16)The shipping industry carries over 90 percent of the world’s trade, and is hence a major contributor to CO2 and other airborne emissions. As a global effort to reduce air pollution from ships, the implementation of the ECA ... -
The value of foresight in the drybulk freight market
Prochazka, Vit; Adland, Roar; Wallace, Stein W. (Discussion paper;1/18, Working paper, 2018-01-31)We analyze the value of foresight in the drybulk freight market when repositioning a vessel through space and time. In order to do that, we apply an optimization model on a network with dynamic regional freight rate ...