Blar i NTNU Open på forfatter "Gullhav, Anders Nordby"
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A branch and price approach for deployment of multi-tier software services in clouds
Gullhav, Anders Nordby; Nygreen, Bjørn (Journal article; Peer reviewed, 2016)This paper considers a service deployment problem that combines service placement and replication level decisions in a cloud computing context. The services are composed of multiple components that are to be placed on nodes ... -
Adaptive large neighborhood search heuristics for multi-tier service deployment problems in clouds
Gullhav, Anders Nordby; Cordeau, Jean-Francois; Hvattum, Lars Magnus; Nygreen, Bjørn (Journal article; Peer reviewed, 2016)This paper proposes adaptive large neighborhood search (ALNS) heuristics for two service deployment problems in a cloud computing context. The problems under study consider the deployment problem of a provider of ... -
An integrated approach to tactical planning for the orthopaedic department at St. Olav's Hospital
Abdullahu, Anita (Master thesis, 2020)The regionale helseforetaket Helse Midt-Norge (HMN) er tilbyr sykehustjenester fylkene i Trøndelag og Møre og Romsdal i Norge. St. Olav's Hospital er per i dag det største sykehuset. Prognoser viser at innen de to fylkene ... -
Data for a meta-analysis of the adaptive layer in adaptive large neighborhood search
Turkeš, Renata; Sörensen, Kenneth; Hvattum, Lars Magnus; Barrena, Eva; Chentli, Hayet; Coelho, Leandro C; Dayarian, Iman; Grimault, Axel; Gullhav, Anders Nordby; Iris, Cagatay; Keskin, Merve; Kiefer, Alexander; Lusby, Richard Martin; Mauri, Geraldo Regis; Monroy-Licht, Marcela; Parragh, Sophie N.; Riquelme-Rodriguez, Juan-Pablo; Santini, Alberto; Santos, Vinicius Gandra Martins; Thomas, Charles (Journal article; Peer reviewed, 2020)Meta-analysis, a systematic statistical examination that combines the results of several independent studies, has the potential of obtaining problem- and implementation-independent knowledge and understanding of metaheuristic ... -
Emergency exit layout planning using optimization and agent-based simulation
Barth, Maren Schliekelmann; Palm, Katharina; Andersson, Carl Henrik; Granberg, Tobias Andersson; Gullhav, Anders Nordby; Krüger, Andreas Jørstad (Peer reviewed; Journal article, 2023)Evacuation preparedness includes ensuring proper infrastructure, resources and planning for moving people from a dangerous area to safety. This is especially important and challenging during mass gatherings, such as large ... -
Fremtidens turnusplanlegging ved sykehus - erfaringer ved bruk av ny teknologi
Klyve, Kjartan Kastet; Gullhav, Anders Nordby (Chapter, 2021)Vi beskriver introduksjonen av et nytt verktøy for beslutningsstøtte som eksemplifiserer hvordan teknologiutvikling og digitalisering vil påvirke fremtidens arbeidsliv for skiftarbeidere i helsetjenesten, og ved norske ... -
Integrated master surgery and outpatient clinic scheduling
Bovim, Thomas; Abdullahu, Anita; Andersson, Henrik; Gullhav, Anders Nordby (Peer reviewed; Journal article, 2022)In this paper, we study an integrated master surgery and outpatient clinic scheduling problem, motivated by the situation at the Orthopaedic Department at St. Olav’s Hospital, Trondheim. During a treatment process, the ... -
Neural Network Assisted Large Neighborhood Search for Personnel Rostering
Langfeldt, Sigurd Sigurdsson; Langholm, Magnus Hauge; Spangelo, Tomas Haugland (Master thesis, 2022)Allokering av arbeidskraft er en essensiell oppgave hos mange organisasjoner som kan være både kompleks og tidkrevende. Til tross for dette er den dominerende praksisen å sette opp timeplaner manuelt. Vår industripartner, ... -
Optimization and Machine Learning Methods for The Stochastic Joint Replenishment Problem under Seasonal Demand
Gravdal, Anna; Vollset, Kristoffer By (Master thesis, 2023)Optimering av felles bestilling av flere produkter under stokastisk etterspørsel kan bidra til betydelige kostnadsbesparelser for bedrifter. Dette undersøkes gjennom det stokastiske felles bestillingsproblemet (Stochastic ... -
Optimization and Machine Learning Methods for The Stochastic Joint Replenishment Problem under Seasonal Demand
Gravdal, Anna; Vollset, Kristoffer By (Master thesis, 2023)Optimering av felles bestilling av flere produkter under stokastisk etterspørsel kan bidra til betydelige kostnadsbesparelser for bedrifter. Dette undersøkes gjennom det stokastiske felles bestillingsproblemet (Stochastic ... -
Optimization-based Resource Allocation in Cloud Computing
Gullhav, Anders Nordby (Doctoral thesis at NTNU;2016:39, Doctoral thesis, 2016)This thesis considers the resource allocation problem of a cloud service provider (SP), which provides at set of services delivered through the software-as-a-service model. The SP owns and operates a private cloud, but in ... -
Optimizing Real-Life Personnel Scheduling Problems through Shift Design and a Parallel Adaptive Large Neighborhood Search
Grov, Håkon; Kallevik, Even; Nærland, Sondre (Master thesis, 2020)Tjenesteytende industrier står overfor den utfordrende oppgaven med å effektivt tilfredsstille en varierende etterspørsel med riktig tilførsel av kvalifisert personell. Å allokere personell til arbeidsskift, slik at et ... -
Personnel Planning in Health Care: Optimization of Nurse and Physician Rosters with real-life applications
Klyve, Kjartan Kastet (Doctoral theses at NTNU;2021:344, Doctoral thesis, 2021)Personnel rostering is challenging in multiple ways. Firstly, creating rosters is an inherently complex task from a combinatorial perspective. Secondly, as rosters reflect operations at a ward and affect the lives of staff, ... -
Service Deployment in Heterogeneous Cloud-like Environments
Gullhav, Anders Nordby (Master thesis, 2011)The amount of power consumed by data centres world wide is increasing, and due to growing electricity bills, service providers aim more attention on energy-efficient management of their data centres. In order to achieve ... -
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 of the response time distribution of fault-tolerant multi-tier cloud services
Gullhav, Anders Nordby; Nygreen, Bjørn; Heegaard, Poul Einar (Journal article; Peer reviewed, 2016)We are considering the problem of obtaining the response time distribution of fault-tolerant multi-tier services. In the provision of software-as-a-service applications, the service provider is obliged to ensure a certain ... -
The Snow Grooming Routing Problem
Andersson, Carl Henrik; Høyland, Sondre; Krogstad, Jesper Anker; Flatberg, Truls; Gullhav, Anders Nordby (Peer reviewed; Journal article, 2023)There are more than 30,000 km of cross-country skiing tracks in Norway, and to maintain these track networks municipalities and local ski clubs spend more than 250 million NOK every year. The primary cost driver is the ... -
Stochastic master surgery scheduling
Bovim, Thomas; Christiansen, Marielle; Gullhav, Anders Nordby; Range, Troels Martin; Hellemo, Lars (Journal article; Peer reviewed, 2020)The aim of the Master Surgery Scheduling Problem (MSSP) is to schedule the medical specialties to the different operating rooms available, such that surgeries may be performed efficiently. We consider a MSSP where elective ... -
Stochastic Master Surgery Scheduling for the orthopaedic department at St. Olav's Hospital
Bovim, Thomas Reiten (Master thesis, 2018)The regional health authority, Helse Midt-Norge (HMN), provides hospital services to the two counties Trøndelag and Møre og Romsdal. Forecasting estimates that the number of people living in these two counties that exceed ... -
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 ...