Blar i NTNU Open på forfatter "Andersson, Henrik"
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Routing and Scheduling of Platform Supply Vessels: Case from the Brazilian Petroleum Industry
Friedberg, Daniel Oyra; Uglane, Vidar Thune (Master thesis, 2013)In this thesis we examine how Logistics in Petrobras may improve their decision making with regard to routing and scheduling of platform supply vessels (PSV). Petrobras are aiming to double their current production level ... -
Simulating emergency patient flow during the COVID-19 pandemic
Bovim, Thomas; Gullhav, Anders Nordby; Andersson, Henrik; Dale, Jostein; Karlsen, Kjetil Andreas Hognestad (Peer reviewed; Journal article, 2021)The work presented in this paper is based on two projects that were conducted at St. Olavs Hospital (Norway) when preparing for the COVID-19 pandemic. Three discrete event simulation models are provided to evaluate the ... -
Simulation based optimization of petroleum production problems: Development of a special purpose B&B for a non-convex MINLP
Ursin-Holm, Stine; Shamlou, Sheri S. (Master thesis, 2013)This work is concerned with the upstream and operational planning of petroleum fields. The short-term production optimization problem is modeled here as a simulation based non-convex MINLP problem. A special purpose B&B ... -
Solving the Multi-Objective Stochastic Cattle Feeding Planning Problem using the L-shaped Method
Fosen, Marte; Nygaard, Elina (Master thesis, 2023)Valg av fôringsstrategi har en stor påvirkning på både melkeproduksjonen og det økonomiske resultatet til en melkegård. Det er imidlertid flere faktorer som kan gjøre det utfordrende å utvikle en god fôringsplan. Noen av ... -
Strategic ambulance location: optimization with multiple performance measures
Aartun, Eirik Nikolai; Leknes, Håkon (Master thesis, 2014)Emergency medical services (EMS) have been of interest for operations research since the middle of the 1960 s. Since then there have been published numerous articles on the location of ambulances stations, allocation of ... -
Strategic Location of Heterogeneous Resources for the Fire and Rescue Service
Nouri, Jonas Gamme; Engen, Emilie Krutnes (Master thesis, 2016)The fire and rescue service (FRS) in Norway is responsible for responding to a number of different emergency calls. Keeping an adequate level of preparedness is essential in order to respond quickly and efficiently to ... -
Strategic Maritime Preparedness Under Uncertainty - Using Sample Average Approximation to Locate Tugboats Along the Norwegian Coast
Musæus, Julie Louise; Nøstvik, Håkon Melby (Master thesis, 2017)The Norwegian Coastal Administration (NCA) is responsible for the maritime preparedness in Norwegian waters. By operating tugboats and monitoring the vessel traffic, the NCA aims to be well positioned against future drifting ... -
Subsea investments and well placements in the oil production industry
Haug, Eirik Røysem (Master thesis, 2013)Strengere krav fra myndigheter og en økende mengde aldrende olje- og gassfelt krever en stadig høyere utvinningsgrad for å gjøre feltene, og reservoarene lønnsomme. Dette prosjektet tester optimeringsmetoder i kombinasjon ... -
Supply Chain Optimization in the LNG Business
Emanuelsen, Kristian; Thorvaldsen, Sondre (Master thesis, 2012)Large players can control several tiers in the liquefied natural gas (LNG) supply chain, which calls for coordinated decisions and a system to facilitate integrated operations. This thesis is concerned with solving a ... -
Supply chain optimization in the newspaper industry: Integrated production allocation, scheduling and distribution
Furnes, Kaia Kristina; Ravlo, Espen Huse (Master thesis, 2014)One of the defining characteristics of the newspaper industry is that the products are virtually worthless at the end of the day; nobody wants to pay for yesterday s news. In addition, strict delivery deadlines and no ... -
Tactical Resource Planning in Surgical Clinics
Bovim, Thomas Reiten (Doctoral theses at NTNU;2023:401, Doctoral thesis, 2023)Due to demographic changes, many western countries experience a growing demand for health care and a stagnation in the working-age population. To maintain the level of care in the future, the health care resources must be ... -
The Dynamic Electric Vehicle Relocation Problem - An Adaptive Large Neighborhood Search
Moan, Magnus Nyborg; Hellem, Simen; Julsvoll, Carl Andreas (Master thesis, 2018)The purpose of this thesis is to develop a solution method for the Dynamic Electric Vehicle Relocation Problem (DE-VReP). The DE-VReP is concerned with recharging and relocation of a fleet of electric cars in a free-floating ... -
The Integrated Dial-a-Ride Problem - Balancing Costs and Convenience
Nedregård, Ida (Master thesis, 2015)Etterspørselen etter offentlige transportmidler og kollektivtransport øker, både for å tilrettelegge for mer miljø vennlig transportmidler og for de som ikke har et annet transportmiddel tilgjengelig. Denne masteroppgaven ... -
The integrated dial-a-ride problem with timetabled fixed route service
Posada, Marcus; Andersson, Henrik; Häll, Carl-Henrik (Journal article, 2017)This paper concerns operational planning of door-to-door transportation systems for the elderly and/or disabled, who often need a more flexible transportation system than the rest of the population. Highly flexible, but ... -
The Liner Shipping Network Design Problem - Strengthened formulations considering complex route structures, transhipment and transit time
Fuglum, Julie Sand; Ameln, Marie (Master thesis, 2015)International shipping is a multibillon dollar business and shipping companies may expect large benefits from improving the routing and scheduling processes of their ships. There has been scarce research efforts when comes ... -
The Snow Grooming Routing Problem with Multiple Depots and Heterogenous Fleet - Comparing an exact solution approach with LocalSolver
Høyland, Sondre; Krogstad, Jesper Anker (Master thesis, 2019)Det er mer enn 30 000 kilometer med langrennsløyper i Norge, og for å vedlikeholde og preppe disse løypene bruker kommuner og skiklubber med enn 250 millioner kroner i året. Den største kostnadsdriveren er den daglige ... -
The static bicycle repositioning problem - Literature survey and new formulation
Espegren, Hans Martin; Kristianslund, Johannes; Andersson, Henrik; Fagerholt, Kjetil (Journal article, 2016)This paper considers the static bicycle repositioning problem (SBRP), which deals with optimally re-balancing bike sharing systems (BSS) overnight, i.e. using service vehicles to move bikes from (nearly) full stations to ... -
The Value of Considering Uncertainty in Short-Term Hydropower Scheduling – Combining Machine Learning and Stochastic Programming
Fleten, Kristine Klock; Bjørdal, Marie Frøysa (Master thesis, 2020) -
The Vehicle Routing Problem with Dynamic Occasional Drivers
Dahle, Lars; Andersson, Henrik; Christiansen, Marielle (Journal article, 2017)Technological advances, such as smart phones and mobile internet, allow for new and innovative solutions for transportation of goods to customers. We consider a setting where a company not only uses its own fleet of vehicles ... -
Tramp shipping in the LNG trade
Fretheim, Steinar Halland; Bondevik, Halfdan (Master thesis, 2014)LNG is to an increasing extent traded through spot markets and short-term contracts. At the same time, gas production is growing and the number of importers and exporters of LNG is increasing. These trends lead to greater ...