Poul Einar Heegaard

Om

Education

Master's Degree (Siv.ing.) in 1989 from Division of Computer Systems and Telematics, NTH (now NTNU) while working as a Teaching assistant (1988-1989). Thesis title: “Transient dependability properties in distributed systems”.
PhD degree (Dr.ing.) in 1998 from Department of Telematics, NTNU while working as Research Scholar (1994-1998). Thesis title:"Efficient simulation of network performance by importance sampling".

Experience

Professor at Department of Information Security and Communication Technology (IIK), NTNU (2017-current)
Head of Networking Research Group @ IIK (2019-2021)
Head of Department, Department of Telematics, NTNU (2009-2013)
Professor at Department of Telematics (ITEM), NTNU (2010-2017)
Head of NTNU QUAM-lab (2015-2019)
Research Scientist (1989-1999) and Senior Research Scientist from 1999 at SINTEF Telecom and Informatics
Associate Professor at Department of Telematics, NTNU, in adjunct position (20%) in 1999-2003, reduced position (50%) in 2003-2006), and full time position since 2006. Coordinator of Network Research area 2006-2009.
Research Scientist (1999-2001) and Senior Scientist (2001-2009) at Telenor Research and Development
Visiting researcher (March, 2007) hosted by Dr. Sandmann at University of Bamberg, Germany
Visiting researcher (Sept 2007-July 2008) hosted by Prof. Trivedi at Duke University, Durham, NC
Visiting researcher Lucent Technologies Bell Labs (Aug 2016), hosted by Dr Veena Mendiratta
Visiting professor University of Illinois at Urbana-Champaign (Aug 2016), hosted by Ravishankar K. Iyer
Visiting professor University of Zagreb FER (Apr 2015 and Aug 2016), hosted by Ass.Prof. Lea Skorin-Kapov.
Visiting professor Budapest University of Technology and Economics (Sept 2016), hosted by Ass.Prof. Gergely Biczók
Visiting professor TU München (Oct - Dec 2015), hosted by Prof. Wolfgang Kellerer
Visiting professor Ghent University (Jan - Jun 2016), hosted by Prof. Piet Demeester
Visiting professor TU München (Aug - Dec 2022), hosted by Prof. Wolfgang Kellerer

Courses

TTM4110 Dependability and Performance with Discrete Event Simulation (textbook [EHHP16]) [subject responsible]
TM8105 Advanced Simulations Methodologies, PhD course started autumn 2004 [subject responsible together with Prof Helvik]
TTM4120 Dependable Systems. [subject responsible when Prof Helvik was on sabbatical leave 2005]
TTM9 Traffic and dependability, Laboratory in tools and methodology [in course development, now subject responsible Prof Helvik]
TTM4185: Security and Robustness in ICT system

[EHHP16] Peder J. Emstad, Poul E. Heegaard, Bjarne E. Helvik, Laurent Paquereau. Dependability and performance with discrete event simulation. : Tapir akademiske forlag 2016. 278 s. NTNU

Research interests

QoS evaluation and management in communication systems and services
rare event simulation techniques
survivability quantification
monitoring, routing and management in dynamic networks
distributed, autonomous and adaptive management and routing

My webpage at Department of Telematics contains more details about me, see here.

Publikasjoner

2023

Ystgaard, Kaja Fjørtoft; Atzori, Luigi; Palma, David; Heegaard, Poul Einar; Bertheussen, Lene Elisabeth; Jensen, Magnus Rom; de Moor, Katrien Rachel W. (2023) Review of the theory, principles, and design requirements of human-centric Internet of Things (IoT). Journal of Ambient Intelligence and Humanized Computing.
Vitenskapelig artikkel

2022

Adrah, Charles Mawutor; Palma, David; Kure, Øivind; Heegaard, Poul Einar. (2022) Deploying 5G architecture for protection systems in smart distribution grids. 2022 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT 2022).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gebraselase, Befekadu; Adrah, Charles Mawutor; Zerihun, Tesfaye Amare; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2022) Blockchain Support For Time-Critical Self-Healing In Smart Distribution Grids. 2022 IEEE PES Innovative Smart Grid Technologies Europe - ISGT-Europe.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hoßfeld, Tobias; Varela, Martin; Skorin-Kapov, Lea; Heegaard, Poul Einar. (2022) What is the trade-off between CO2 emission and video-conferencing QoE?. SIGMM Records. volum 14 (1).
Vitenskapelig artikkel
Hoßfeld, Tobias; Heegaard, Poul Einar; Varela, Martin; Jarchel, Michael. (2022) User-Centric Markov Reward Model on the Example of Cloud Gaming. IEEE Xplore digital library.
Vitenskapelig artikkel
Myhre, Stine Fleischer; Fosso, Olav B; Heegaard, Poul Einar; Gjerde, Oddbjørn. (2022) RELSAD: A Python package for reliability assessment of modern distribution systems. Journal of Open Source Software (JOSS). volum 7 (78).
Vitenskapelig artikkel

2021

Garau, Michele; Muka, Romina; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2021) Co-simulation and Discrete Event Simulation for Reliability Assessment of Power System and ICT: A Comparison. 2021 5th International Conference on System Reliability and Safety (ICSRS).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Haugli, Fredrik Bakkevig; Heegaard, Poul Einar. (2021) Modeling framework for study of distributed and centralized smart grid system services. 2021 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids - SmartGridComm.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Mehmood, Kashif; Mendis, Handunneththi V. Kalpanie; Kralevska, Katina; Heegaard, Poul Einar. (2021) Intent-based Network Management and Orchestration for Smart Distribution Grids. 28th International Conference on Telecommunications.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Mendis, Handunneththi V. Kalpanie; Heegaard, Poul Einar; Casares-Giner, Vicente; Li, Frank Yong; Kralevska, Katina. (2021) Transient Performance Modelling of 5G Slicing with Mixed Numerologies for Smart Grid Traffic. 2021 IEEE 26th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Muka, Romina; Garau, Michele; Heegaard, Poul Einar. (2021) Genetic algorithm for placement of IEDs for fault location in smart distribution grids. CIRED 2021 - The 26th International Conference and Exhibition on Electricity Distribution.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Muka, Romina; Garau, Michele; Tola, Besmir; Heegaard, Poul Einar. (2021) Effect of 5G communication service failure on placement of Intelligent Electronic Devices in Smart Distribution Grids. 2021 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids - SmartGridComm.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2020

Adrah, Charles Mawutor; Palma, David; Kure, Øivind; Heegaard, Poul Einar. (2020) A network design algorithm for multicast communication architectures in smart transmission grids. Electric power systems research. volum 187.
Vitenskapelig artikkel
Barani, Mostafa; Vadlamudi, Vijay Venu; Heegaard, Poul Einar. (2020) Reliability analysis of cyber‐physical microgrids: Study of grid‐connected microgrids with communication‐based control systems. IET Generation, Transmission & Distribution. volum 15 (4).
Vitenskapelig artikkel
Gajic, Marija; Furdek, Marija; Heegaard, Poul Einar. (2020) A Framework for Spatial and Temporal Evaluation of Network Disaster Recovery. 32nd International Teletraffic Congress (ITC 32).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Helvik, Bjarne Emil; Vizarreta, Petra; Heegaard, Poul Einar; Trivedi, Kishor; Mas Machuca, Carmen. (2020) Modelling of Software Failures. Guide to Disaster-Resilient Communication Networks.
Faglig kapittel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2020) Deriving QoE in systems: from fundamental relationships to a QoE-based Service-level Quality Index. Quality and User Experience.
Vitenskapelig artikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin; Fiedler, Markus. (2020) From QoS Distributions to QoE Distributions: a System's Perspective. Proceedings of the 2020 IEEE Conference on Network Softwarization.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Kamisinski, Andrzej; Musumeci, Francesco; Hmaity, Ali; Tornatore, Massimo; Casazza, Marco; Farshad, Arsham; Hutchison, David; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2020) Resilient NFV Technology and Solutions. Guide to Disaster-Resilient Communication Networks.
Faglig kapittel
Myhre, Stine Fleischer; Fosso, Olav B; Heegaard, Poul Einar; Gjerde, Oddbjørn; Kjølle, Gerd Hovin. (2020) Modeling Interdependencies with Complex Network Theory in a Combined Electrical Power and ICT System. 2020 International Conference on Probabilistic Methods Applied to Power Systems - PMAPS.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Rak, Jacek; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2020) Resilience of communication networks to random failures and disasters: An optimization perspective. Networks. volum 75 (4).
Vitenskapelig artikkel

2019

Adrah, Charles Mawutor; Yellajosula, Jaya R. A. K.; Kure, Øivind; Palma, David; Heegaard, Poul Einar. (2019) An IP Multicast Framework for Routable Sample Value Communication in Transmission Grids. Journal of Communications. volum 14 (9).
Vitenskapelig artikkel
Ammar, Doreid; De Moor, Katrien; Skorin-Kapov, Lea; Fiedler, Markus; Heegaard, Poul Einar. (2019) Exploring the Usefulness of Machine Learning in the Context of WebRTC Performance Estimation. 44th Annual IEEE Conference on Local Computer Networks (LCN 2019).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
De Moor, Katrien; Borge, Hege Krokås; Heegaard, Poul Einar. (2019) Young children and the use of video chat: implications for QoE research. Proceedings of the 11th International Conference on Quality of Multimedia Experience (QoMEX 2019).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Atzori, Luigi; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2019) The Interplay between QoE, User Behavior and System Blocking in QoE Management. 2019 22nd Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2019) Fundamental Relationships for Deriving QoE in Systems. Proceedings of the 11th International Conference on Quality of Multimedia Experience (QoMEX 2019).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2019) On System QoE: Merging the system and the QoE perspectives. SIGMM Records. volum 11 (2).
Vitenskapelig artikkel
Mendis, Handunneththi V. Kalpanie; Heegaard, Poul Einar; Kralevska, Katina. (2019) 5G Network Slicing as an Enabler for Smart Distribution Grid Operations. CIRED Conference Proceedings.
Vitenskapelig artikkel
Metzger, Florian; Hossfeld, Tobias; Bauer, André; Kounev, Samuel; Heegaard, Poul Einar. (2019) Modeling of Aggregated IoT Traffic and Its Application to an IoT Cloud. Proceedings of the IEEE. volum 107 (4).
Vitenskapelig artikkel
Muka, Romina; Haugli, Fredrik Bakkevig; Vefsnmo, Hanne; Heegaard, Poul Einar. (2019) Information Inconsistencies in Smart Distribution Grids under Different Failure Causes modelled by Stochastic Activity Networks. 2019 AEIT International Annual Conference.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Rak, Jacek; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2019) Highlights from RNDM 2018 – 10th Anniversary Workshop on Resilient Networks Design and Modeling. IEEE Communications Magazine.
Sammendrag/abstract

2018

Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar. (2018) An Experimental Platform for QoE Studies of WebRTC-based Multi-Party Video Communication. International Journal of New Computer Architectures and their Applications (IJNCAA).
Vitenskapelig artikkel
Esposito, Christian; Gouglidis, Antonios; Hutchison, David; Gurtov, Andrei; Helvik, Bjarne Emil; Heegaard, Poul Einar; Rizzo, Gianluca; Rak, Jacek. (2018) On the Disaster Resiliency within the Context of 5G Networks: The RECODIS Experience. 2018 European Conference on Networks and Communications (EuCNC).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gonzalez, Andres Javier; Nencioni, Gianfranco; Kamisinski, Andrzej; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2018) Dependability of the NFV Orchestrator: State of the Art and Research Challenges. IEEE Communications Surveys and Tutorials. volum 20 (4).
Vitenskapelig artikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Rak, Jacek. (2018) Proceedings 10th International Workshop on Resilient Networks Design and Modeling (RNDM). IEEE Press. 2018. ISBN 978-1-5386-7030-9. International Workshop on Resilient Networks Design and Modeling (10).
Vitenskapelig antologi/Konferanseserie
Hossfeld, Tobias; Metzger, Florian; Heegaard, Poul Einar. (2018) Traffic modeling for aggregated periodic IoT data. 21st Conference on Innovation in Clouds, Internet and Networks (ICIN 2018).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin. (2018) A new QoE fairness index for QoE management. Quality and User Experience.
Vitenskapelig artikkel
Hossfeld, Tobias; Varela, Martin; Heegaard, Poul Einar; Skorin-Kapov, Lea. (2018) Observations on Emerging Aspects in QoE Modeling and Their Impact on QoE Management. 2018 Tenth International Conference on Quality of Multimedia Experience (QoMEX).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hoßfeld, Tobias; Varela, Martin; Heegaard, Poul Einar; Skorin-Kapov, Lea. (2018) QoE Analysis of the Setup of Different Internet Services for FIFO Server Systems. Lecture Notes in Computer Science (LNCS). volum 10740 LNCS.
Vitenskapelig artikkel
Moldovan, Christian; Skorin-Kapov, Lea; Heegaard, Poul Einar; Hossfeld, Tobias. (2018) Optimal Fairness and Quality in Video Streaming with Multiple Users. ITC 30 - Teletraffic in a Smart World.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Oostenbrink, Jorik; Kuipers, Fernando; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2018) Evaluating Local Disaster Recovery Strategies. Performance Evaluation Review. volum 46 (2).
Vitenskapelig artikkel
Vizarreta, Petra; Trivedi, Kishor; Helvik, Bjarne Emil; Heegaard, Poul Einar; Blenk, Andreas; Kellerer, Wolfgang; Mas Machuca, Carmen. (2018) Assessing the Maturity of SDN Controllers with Software Reliability Growth Models. IEEE Transactions on Network and Service Management. volum 15 (3).
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2018) Non-Markovian Survivability Assessment Model for Infrastructure Wireless Networks. Proceedings of the International Symposium on Wireless Communication Systems. volum 2018-August.
Vitenskapelig artikkel
Zerihun, Tesfaye Amare; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2018) A modeling approach for dependability analysis of smart distribution grids. 2018 21st Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2017

Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar. (2017) An Experimental Platform for QoE Studies of WebRTC-based Multi-Party Video Communication. Proceedings from The Fourth International Conference on Computer Science, Computer Engineering, and Education Technologies (CSCEET2017).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Biczok, Gergely; Dramitinos, Manos; Toka, Lazio; Heegaard, Poul Einar; Lønsethagen, Håkon. (2017) Manufactured by software: SDN-enabled multi-operator composite services with the 5G Exchange. IEEE Communications Magazine. volum 55 (4).
Vitenskapelig artikkel
De Moor, Katrien; Arndt, Sebastian; Ammar, Doreid; Voigt-Antons, Jan-Niklas; Perkis, Andrew; Heegaard, Poul Einar. (2017) Exploring diverse measures for evaluating QoE in the context of WebRTC. Proceedings of the 9th International Conference on Quality of Multimedia Experience (QoMEX 2017).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gullhav, Anders Nordby; Nygreen, Bjørn; Heegaard, Poul Einar. (2017) Simulation of the response time distribution of fault-tolerant multi-tier cloud services. Journal of Simulation. volum 11 (4).
Vitenskapelig artikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2017) No Silver Bullet: QoE Metrics, QoE Fairness, and User Diversity in the Context of QoE Management. Proceedings of the 9th International Conference on Quality of Multimedia Experience (QoMEX 2017).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin. (2017) Definition of QoE Fairness in Shared Systems. IEEE Communications Letters. volum 21 (1).
Vitenskapelig artikkel
Nencioni, Gianfranco; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2017) Implementing the Availability Model of a Software-Defined Backbone Network in Möbius. 2017.
Rapport
Nencioni, Gianfranco; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2017) Including Failure Correlation in Availability Modeling of a Software-Defined Backbone Network. IEEE Transactions on Network and Service Management. volum 14 (4).
Vitenskapelig artikkel
Vizarreta, Petra; Heegaard, Poul Einar; Helvik, Bjarne Emil; Kellerer, Wolfgang; Mas Machuca, Carmen. (2017) Characterization of Failure Dynamics in SDN Controllers. 9th International Workshop on Resilient Netwrorks Design and Modeling.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Vizarreta, Petra; Trivedi, Kishor; Helvik, Bjarne Emil; Heegaard, Poul Einar; Kellerer, Wolfgang; Mas Machuca, Carmen. (2017) An empirical study of software reliability in SDN controllers. Proceedings of the 13th International Conference on Network and Service Management [CNSM 2017].
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2017) Survivability analysis of a two-tier infrastructure-based wireless network. Computer Networks. volum 128.
Vitenskapelig artikkel

2016

Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar. (2016) Quality of Experience-assessment of WebRTC based video communication. ERCIM News.
Populærvitenskapelig artikkel
Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar; Fiedler, Markus; Xie, Min. (2016) Revealing the Dark Side of WebRTC Statistics Collected by Google Chrome. Proceedings from Eighth International Conference on Quality of Multimedia Experience, QoMEX 2016.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Ammar, Doreid; De Moor, Katrien; Xie, Min; Fiedler, Markus; Heegaard, Poul Einar. (2016) Video QoE killer and performance statistics in WebRTC-based video communication. Proceedings from 2016 IEEE Sixth International Conference on Communications and Electronics (ICCE).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Bartnes, Maria; Moe, Nils Brede; Heegaard, Poul Einar. (2016) The future of information security incident management training: A case study of electrical power companies. Computers & Security. volum 61.
Vitenskapelig artikkel
Heegaard, Poul Einar; Biczok, Gergely; Toka, Lazio. (2016) Sharing is Power: Incentives for Information Exchange in Multi-Operator Service Delivery. 2016 IEEE Global Communications Conference (GLOBECOM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Nencioni, Gianfranco; Wäfler, Jonas. (2016) Managed Dependability in Interacting Systems. Principles of Performance and Reliability Modeling and Evaluation Essays in Honor of Kishor Trivedi on his 70th Birthday.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Varela, Martin; Möller, Sebastian. (2016) QoE Beyond the MOS: An In-Depth Look at QoE via Better Metrics and their Relation to MOS. Quality and User Experience.
Vitenskapelig artikkel
Hossfeld, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin; Chen, Kuan-ta. (2016) On Additive and Multiplicative QoS-QoE Models for Multiple QoS Parameters. Proceedings of the 5th ISCA/DEGA Workshop on Perceptual Quality of Systems PQS 2016.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hu, Chengchen; Li, Hao; Jiang, Yuming; Cheng, Yu; Heegaard, Poul Einar. (2016) Deep Semantics Inspection over Big Network Data at Wire Speed. IEEE Network. volum 30 (1).
Vitenskapelig artikkel
Mas Machuca, Carmen; Secci, Stefano; Vizerrata, Petra; Kuipers, Fernando; Gouglidis, Antonios; Hutchison, David; Jouet, Simon; Pezaros, Dimitrios; Elmokashif, Ahmed; Heegaard, Poul Einar; Ristov, Sasko; Gusev, Marjan. (2016) Technology-related Disasters: A Survey towards Disaster-resilient Software Defined Networks. Proceedings of 2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Nencioni, Gianfranco; Helvik, Bjarne Emil; Gonzalez, Andres Javier; Heegaard, Poul Einar; Kamisinski, Andrzej. (2016) Availability Modelling of Software-Defined Backbone Networks. 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Nencioni, Gianfranco; Helvik, Bjarne Emil; Gonzalez, Andres Javier; Heegaard, Poul Einar; Kamisinski, Andrzej. (2016) Impact of SDN Controllers Deployment on Network Availability. 2016.
Rapport
Sieber, Christian; Heegaard, Poul Einar; Hoßfeld, Tobias; Kellerer, Wolfgang. (2016) Sacrificing efficiency for quality of experience: YouTube's redundant traffic behavior. Proceedings from IFIP Networking 2016.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Tornatore, Massimo; André, Joao; Babarczi, Peter; Braun, Torsten; Følstad, Eirik Larsen; Heegaard, Poul Einar; Hmaity, Ali; Furdek, Marija; Jorge, Luisa; Kmiecik, Wojciech; Mas Machuca, Carmen; Martins, Lucia; Medeiros, Carmo; Musumeci, Francesco; Pasic, Alija; Rak, Jacek; Simpson, Steven; Travanca, Rui; Voyiatzis, Artemios. (2016) A Survey on Network Resiliency Methodologies against Weather-based Disruptions. Proceedings of 2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2015

Gonzalez, Andres Javier; Grønsund, Pål R.; Mahmood, Kashif; Helvik, Bjarne Emil; Heegaard, Poul Einar; Nencioni, Gianfranco. (2015) Service availability in the NFV Virtualized Evolved Packet Core. 2015 IEEE Global Communications Conference (GLOBECOM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Mendiratta, Veena. (2015) Achieving Dependability in Software-Defined Networking - A Perspective. 7th International Workshop on Reliable Networks Design and Modeling (RNDM 2015).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Trivedi, Kishor; Machida, Fumio. (2015) Survivability as a Generalization of Recovery. Proceedings of the 2015 11th International Conference on The Design of Reliable Communication Networks (DRCN).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Varela, Martin. (2015) QoE beyond the MOS: Added value using quantiles and distributions. 2015 Seventh International Workshop on Quality of Multimedia Experience (QoMEX) Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2015) Software Performance Evaluation Utilizing UML Specification and SRN Model and Their Formal Representation. Journal of Software. volum 10 (5).
Vitenskapelig artikkel
Sand, Kjell; Heegaard, Poul Einar. (2015) Next Generation Control Centres - State of art and future scenarios. Version 2.0. 2015. ISBN 978-82-7200-052-2.
Rapport
Wäfler, Jonas; Heegaard, Poul Einar. (2015) Consequences of Increased Automation in Smart Grids. ERCIM News. volum 102.
Short communication
Wäfler, Jonas; Heegaard, Poul Einar. (2015) How to use mobile communication in critical infrastructures: A dependability analysis. Lecture Notes in Computer Science (LNCS). volum 9338.
Vitenskapelig artikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2015) Interdependency in Smart Grid Recovery. 7th International Workshop on Reliable Networks Design and Modeling (RNDM 2015).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Zerihun, Tesfaye Amare; Helvik, Bjarne Emil; Heegaard, Poul Einar; Krogstie, John. (2015) Quantitative Modelling of Digital Ecosystems. ERCIM News.
Short communication
Østrem, Trond; Bolkesjø, Torjus Folsland; Rong, Chunming; Wolff, Robert; Sand, Kjell; Mathisen, Geir; Coldevin, Grete Håkonsen; Ryghaug, Marianne; Tomasgard, Asgeir; Heegaard, Poul Einar; Fosso, Olav B; Midtgård, Ole-Morten; Novakovic, Vojislav; Hovd, Morten. (2015) Norwegian Smart Grid Research Strategy. 2015.
Rapport

2014

Wäfler, Jonas; Heegaard, Poul Einar. (2014) Quantifying Influence of Strategies and Network Properties in Repairing Simultaneous Failures in Smart Grid. NIKT: Norsk IKT-konferanse for forskning og utdanning.
Vitenskapelig artikkel

2013

Gullhav, Anders N.; Nygreen, Bjørn; Heegaard, Poul Einar. (2013) Approximating the Response Time Distribution of Fault-tolerant Multi-tier Cloud Services. 2013 IEEE/ACM 6th International Conference on Utility and Cloud Computing.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; De Moor, Katrien; Heegaard, Poul Einar; Instefjord, Anders. (2013) Investigating Quality of Experience in the context of adaptive video streaming: findings from an experimental user study. Norsk informatikkonferanse NIK 2013, Universitetet i Stavanger, 18. - 20.november 2013.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) A Measurement Study of Active Probing on Access Links. Advances in Communication Networking. 19th EUNICE/IFIP WG 6.6 International Workshop Chemnitz, Germany, August 28-30m 2913 Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) Detecting Period and Burst Durations in Video Streaming by means of Active Probing. International Journal of Computer and Communication Engineering. volum 2 (4).
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) Estimating Available Bandwidth on Access Links by Means of Stratified Probing. International Journal of Electrical Energy. volum 1 (4).
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) Group Based Traffic Shaping for Adaptive HTTP Video Streaming. IEEE International Conference on Advanced Information Networking and Applications IEEE AINA 2013.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2013) A Combined Structural and Dynamic Modelling Approach for Dependability Analysis in Smart Grid. Proceedings of the 28th Annual ACM Symposium on Applied Computing.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2013) Interdependency Modeling in Smart Grid and the Influence of ICT on Dependability. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2013) Structural Dependability Analysis in Smart Grid under Simultaneous Failures. Proceedings of 2013 IEEE International Conference on Smart Grid Communications (SmartGridComm).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2013) Modeling and Quantifying the Survivability of Telecommunication Network Systems under Fault Propagation. Lecture Notes in Computer Science (LNCS). volum 8115.
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2013) Network Survivability under Disaster Propagation: Modeling and Analysis. IEEE Wireless Communications and Networking Conference.
Vitenskapelig artikkel
Xie, Lang; Jiang, Yuming; Heegaard, Poul Einar. (2013) Modelling and Analysis of the Survivability of Telecommunication Networks. Proceedings of the 2013 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS ’13).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2012

Chilwan, Ameen; Undheim, Astrid; Heegaard, Poul Einar. (2012) Effects of Dynamic Cloud Cluster Load on Differentiated Service Availability. International Conference on Data Networks, Communications, Computers - Proceedings.
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar; Machida, Fumio; Trivedi, Kishor. (2012) A performability modeling framework considering service components deployment. International Journal On Advances in Networks and Services. volum 5 (3&4).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar; Wali Ullah, Kazi. (2012) Performance Evaluation of Distributed System Using SPN. Petri Nets - Manufacturing and Computer Science.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Kuipers, Fernando; Heegaard, Poul Einar. (2012) Self-organizing systems : 6th International Workshop IWSOS 2012. Springer. 2012. ISBN 978-3-642-28582-0. Lecture Notes in Computer Science (7166).
Vitenskapelig antologi/Konferanseserie
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2012) Improving Fairness in QoS and QoE domains for Adaptive Video Streaming. International Journal On Advances in Networks and Services. volum 5 (3&4).
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2012) Improving Perceived Fairness and QoE for Adaptive Video Streams. Proceedings of ICNS 2012.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar; Instefjord, Anders. (2012) Improving Fairness for Adaptive HTTP Video Streaming. Information and Communication Technologies - 18th EUNICE/ IFIP WG 6.2, 6.6 International Conference, EUNICE 2012, Budapest, Hungary, August 29-31, 2012. Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2012) Modeling and Analysis of the Survivability of an Infrastructure-Based Wireless Network. Lecture Notes in Computer Science (LNCS). volum 7479.
Vitenskapelig artikkel

2011

Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2011) A Bio-inspired Method for Distributed Deployment of Services. New generation computing. volum 29 (2).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2011) Derivation of Stochastic Reward Net (SRN) from UML Specification Considering Cost Efficient Deployment Management of Collaborative Service Components. International Journal of New Computer Architectures and their Applications (IJNCAA). volum 1 (3).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2011) A performance modeling framework incorporating cost efficient deployment of multiple collaborating components. Communications in Computer and Information Science. volum 179.
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2011) A performance modeling framework incorporating service components deployment issue. International Proceedings of Computer Science and Information Technology. volum 5.
Vitenskapelig artikkel
Undheim, Astrid; Chilwan, Ameen; Heegaard, Poul Einar. (2011) Differentiated Availability in Cloud Computing SLAs. Proceedings from 2011 12th IEEE/ACM International Conference on Grid Computing Grid 2011.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2011) A Monitor Plane Component for Adaptive Video Streaming. NIKT: Norsk IKT-konferanse for forskning og utdanning.
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2011) Towards Knowledge-driven QoE Optimization in Home Gateways. ICNS 2011, The Seventh International Conference on Networking and Services.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2010

Brugge, Jonathan; Paquereau, Laurent; Heegaard, Poul Einar. (2010) Experience Report on Implementing and Simulating a Routing Protocol in NS-2 and NS-3. Proceedings of the 2nd International Conference on Advances in System Simulation (SIMUL).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar. (2010) Optimization and Service Deployment in Private and Public Clouds. ERCIM News.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar. (2010) Swarm Intelligence Heuristics for Component Deployment. Lecture Notes in Computer Science (LNCS). volum 6164.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2010) Component Deployment Using Parallel Ant-nests. International Journal of Autonomous and Adaptive Communications Systems.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2010) Ant system for service development in private and public clouds. Proceeding of the 2nd workshop on Bio-inspired algorithms for distributed systems.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Wittner, Otto. (2010) Overhead Reduction in Distributed Path Management System. Computer Networks. volum 54 (6).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2010) Translation from UML to SPN model: A performance modeling framework. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Ofigsbø, Mona Holsve; Mjølsnes, Stig Frode; Heegaard, Poul Einar; Nilsen, Leif. (2010) Reducing the Cost of Certificate Revocation: A Case Study. Lecture Notes in Computer Science (LNCS). volum 6391.
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2010) Monitoring and control of QoE in media streams by click software router. Norsk Informatikkonferanse.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Xie, Lang; Heegaard, Poul Einar; Zhang, Jin; Xiang, Jie. (2010) System State aware Admission Control scheme for IEEE 802.16 WiMAX-based healthcare system. Proceedings of the 6th International Wireless Communications and Mobile Computing Conference, IWCMC 2010, Caen, France, June 28 - July 2, 2010.
Annet

2009

Csorba, Mate Jozsef; Heegaard, Poul Einar; Meling, Hein. (2009) Laying pheromone trails for balanced and dependable component mappings. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2009) Laying Pheromone Trails for Balanced and Dependable Component Mappings. Integrert? Innvandrere og barn av innvandrere i utdanning og arbeidsliv.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar; Herrmann, Peter. (2009) Foraging for Better Deployment of Replicated Service Components. Distributed Applications and Interoperable Systems.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar; Herrmann, Peter. (2009) Foraging for Better Deployment of Replicated Service Components. Lecture Notes in Computer Science (LNCS). volum 5523.
Vitenskapelig artikkel
Heegaard, Poul Einar; Sandmann, Werner. (2009) Importance Sampling Simulations of Phase-Type Queues. Winter simulation conference : proceedings.
Vitenskapelig artikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2009) Network survivability modeling. Computer Networks. volum 53 (8).
Vitenskapelig artikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2009) Survivability Modeling with Stochastic Reward Nets. Winter simulation conference : proceedings.
Vitenskapelig artikkel
Østhus, Ivar Conradi; Hansen, Lars-Petter Gunhildsberg; Heegaard, Poul Einar. (2009) Online Broadband Test Tools. Norsk Informatikk Konferanse 2009.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2008

Heegaard, Poul Einar; Trivedi, Kishor. (2008) Survivability Quantification of Communication Services. The 38th Annual IEEE/IFIP International Conference on Dependable Systems and Networks.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2008) Survivability in Real-sized Networks Quantified by Analytical Delay Distributions. The Third International Conference on Systems and Networks Communications on Systems and Networks Communications.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2008) Cost-Efficient Deployment of Collaborating Components. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2008) Adaptable Model-based Component Deployment Guided by Artificial Ants. Proceedings of 2008 ICST Second International Conference on Autonomic Computing and Communication Systems and Workshop.
Annet
Heegaard, Poul Einar. (2008) Empirical Data from Mobile and IP Telephony. Journal of Communication Software and Systems. volum 4 (1).
Vitenskapelig artikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Wittner, Otto Jonassen. (2008) The Cross Entropy Ant System for Network Path Management. Telektronikk. volum 104 (1).
Vitenskapelig artikkel
Kjeldsen, Vebjørn; Wittner, Otto Jonassen; Heegaard, Poul Einar. (2008) Distributed and Scalable Path Management by a System of Cooperating Ants. WORLDCOMP’08.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2007

Bjørndalen, John Markus; Haugland, Dag; Heegaard, Poul Einar; Løkketangen, Arne; Møller-Pedersen, Birger; Rong, Chunming; Runde, Ragnhild Kobro; Sandnes, Frode Eika; Strøm, Torbjørn; Trætteberg, Hallvard. (2007) NIK 2007. Tapir Akademisk Forlag. 2007. ISBN 978-82-519-2272-2.
Vitenskapelig antologi/Konferanseserie
Emstad, Peder Johannes; Heegaard, Poul Einar; Helvik, Bjarne Emil; Paquereau, Laurent. (2007) Dependability and performance with discrete event simulation. Tapir Akademisk Forlag. 2007.
Kompendium
Heegaard, Poul Einar. (2007) Empirical Observations of Traffic Patterns in Mobile and IP Telephony. Next Generation Teletraffic and Wired/Wireless Advanced Networking.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar. (2007) Evolution of Traffic Patterns in Telecommunication Systems. Proceedings from International Conference on Communications and Networking in China (ChinaCom 2007).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Sandmann, Werner. (2007) Ant-based Approach for Determining the Change of Measure in Importance Sampling. Proceedings of the 2007 Winter Simulation Conference.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Sandmann, Werner. (2007) Efficient Estimation of Loss Rates in Optical Packet Switched Networks with Wavelength Conversion. Proceedings from Second International Conference on Systems and Networks Communications (ICSNC 2007).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Sandmann, Werner. (2007) Evaluating Differentiated Quality of Service Parameters in Optical Packet Switching. Next Generation Teletraffic and Wired/Wireless Advanced Networking.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Stray, Petter; Jelle, Thomas; Heegaard, Poul Einar. (2007) Field Test of Mobile Wi-Fi Terminals in a Wireless City. Norsk Informatikkonferanse (NIK 2007).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Tjora, Åsmund; Skavhaug, Amund; Heegaard, Poul Einar. (2007) A Mathematical Model for Run-Time Distributions in a Fault Tolerant System with Nonhomogeneous Passive Replicas. DECOS/ERCIM Workshop on Dependable Embedded Systems.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2006

Heegaard, Poul Einar; Fuglem, Ingebrigt. (2006) Demonstrating ant-based monitoring on software IP routers (Deliverable 14). 2006.
Rapport
Heegaard, Poul Einar; Wittner, Otto Jonassen. (2006) Restoration performance vs. overhead in a swarm intelligence path management system. Lecture Notes in Computer Science (LNCS). volum 4150.
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto Jonassen. (2006) Self-tuned Refresh Rate in a Swarm Intelligence Path Management System. Lecture Notes in Computer Science (LNCS). volum 4124.
Vitenskapelig artikkel

2005

Heegaard, Poul Einar; Helvik, Bjarne Emil; Andreassen, Ragnar. (2005) Application of Rare Event Techniques to Trace Driven Simulation. Proceedings of the 2005 Winter Simulation Conference.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Wittner, Otto; Helvik, Bjarne Emil. (2005) Self-managed virtual path management in dynamic networks. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto; Helvik, Bjarne Emil. (2005) Self-management of virtual paths in dynamic networks. Lecture Notes in Computer Science (LNCS). volum 3460.
Vitenskapelig artikkel
Paquereau, Laurent; Viken, Brynjar; Heegaard, Poul Einar. (2005) Combining performance monitoring and location data in wireless networks. Norsk informatikkonferanse (NIK) 2005.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

2004

Emstad, Peder Johannes; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2004) Pålitelighet og ytelse i informasjons- og kommunikasjonssystem - Grunnlag. Tapir Akademisk Forlag. 2004.
Kompendium
Heegaard, Poul Einar. (2004) Evaluation of basic services in AHN, P2P and Grid networks (Deliverable 07). 2004.
Rapport
Heegaard, Poul Einar. (2004) Evaluation plan (Deliverable 04). 2004.
Rapport
Heegaard, Poul Einar. (2004) Implementation of basic services in AHN, P2P and Grid networks (Deliverable 06). 2004.
Rapport
Heegaard, Poul Einar. (2004) Models for Basic Services in AHN, P2P Networks (Deliverable 05). 2004.
Rapport

2002

Wittner, Otto; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2002) Swarm Based Distributed Search in the AMIGOS Environment. 2002. AVANTEL Technical Report.
Rapport

2001

Görg, Carmelita; Lamers, Eugen; Fuß, Oliver; Heegaard, Poul Einar. (2001) Rare Event Simulation. Proceedings of the European COST (256) telecommunication Symposium.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Viken, Brynjar Åge; Heegaard, Poul Einar. (2001) A Distributed Test Environment for IP Performance. Telektronikk. volum 97 (2/3).
Populærvitenskapelig artikkel
Viken, Brynjar Åge; Heegaard, Poul Einar. (2001) GenSyn - Generator of synthetic Internet traffic. Network Analysis Times Publisher: National Laboratory for Applied Network Research/Measurement and Operations Analysis Team. volum 2 (1).
Populærvitenskapelig artikkel

1999

Emstad, Peder Johannes; Heegaard, Poul Einar; Helvik, Bjarne Emil. (1999) Pålitelighet og ytelse i informasjons- og kommunikasjonssystem. Grunnlag. 1999.
Kompendium

1998

Heegaard, Poul Einar. (1998) A scheme for adaptive biasing in importance sampling. AEU - International Journal of Electronics and Communications.
Vitenskapelig artikkel
Heegaard, Poul Einar. (1998) Efficient simulation of network performance by importance sampling. 1998. ISBN 82-471-0228-5. Doktor ingeniøravhandling (1998:33).
Doktorgradsavhandling

Tidsskriftspublikasjoner

Ystgaard, Kaja Fjørtoft; Atzori, Luigi; Palma, David; Heegaard, Poul Einar; Bertheussen, Lene Elisabeth; Jensen, Magnus Rom; de Moor, Katrien Rachel W. (2023) Review of the theory, principles, and design requirements of human-centric Internet of Things (IoT). Journal of Ambient Intelligence and Humanized Computing.
Vitenskapelig artikkel
Hoßfeld, Tobias; Varela, Martin; Skorin-Kapov, Lea; Heegaard, Poul Einar. (2022) What is the trade-off between CO2 emission and video-conferencing QoE?. SIGMM Records. volum 14 (1).
Vitenskapelig artikkel
Hoßfeld, Tobias; Heegaard, Poul Einar; Varela, Martin; Jarchel, Michael. (2022) User-Centric Markov Reward Model on the Example of Cloud Gaming. IEEE Xplore digital library.
Vitenskapelig artikkel
Myhre, Stine Fleischer; Fosso, Olav B; Heegaard, Poul Einar; Gjerde, Oddbjørn. (2022) RELSAD: A Python package for reliability assessment of modern distribution systems. Journal of Open Source Software (JOSS). volum 7 (78).
Vitenskapelig artikkel
Adrah, Charles Mawutor; Palma, David; Kure, Øivind; Heegaard, Poul Einar. (2020) A network design algorithm for multicast communication architectures in smart transmission grids. Electric power systems research. volum 187.
Vitenskapelig artikkel
Barani, Mostafa; Vadlamudi, Vijay Venu; Heegaard, Poul Einar. (2020) Reliability analysis of cyber‐physical microgrids: Study of grid‐connected microgrids with communication‐based control systems. IET Generation, Transmission & Distribution. volum 15 (4).
Vitenskapelig artikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2020) Deriving QoE in systems: from fundamental relationships to a QoE-based Service-level Quality Index. Quality and User Experience.
Vitenskapelig artikkel
Rak, Jacek; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2020) Resilience of communication networks to random failures and disasters: An optimization perspective. Networks. volum 75 (4).
Vitenskapelig artikkel
Adrah, Charles Mawutor; Yellajosula, Jaya R. A. K.; Kure, Øivind; Palma, David; Heegaard, Poul Einar. (2019) An IP Multicast Framework for Routable Sample Value Communication in Transmission Grids. Journal of Communications. volum 14 (9).
Vitenskapelig artikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2019) On System QoE: Merging the system and the QoE perspectives. SIGMM Records. volum 11 (2).
Vitenskapelig artikkel
Mendis, Handunneththi V. Kalpanie; Heegaard, Poul Einar; Kralevska, Katina. (2019) 5G Network Slicing as an Enabler for Smart Distribution Grid Operations. CIRED Conference Proceedings.
Vitenskapelig artikkel
Metzger, Florian; Hossfeld, Tobias; Bauer, André; Kounev, Samuel; Heegaard, Poul Einar. (2019) Modeling of Aggregated IoT Traffic and Its Application to an IoT Cloud. Proceedings of the IEEE. volum 107 (4).
Vitenskapelig artikkel
Rak, Jacek; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2019) Highlights from RNDM 2018 – 10th Anniversary Workshop on Resilient Networks Design and Modeling. IEEE Communications Magazine.
Sammendrag/abstract
Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar. (2018) An Experimental Platform for QoE Studies of WebRTC-based Multi-Party Video Communication. International Journal of New Computer Architectures and their Applications (IJNCAA).
Vitenskapelig artikkel
Gonzalez, Andres Javier; Nencioni, Gianfranco; Kamisinski, Andrzej; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2018) Dependability of the NFV Orchestrator: State of the Art and Research Challenges. IEEE Communications Surveys and Tutorials. volum 20 (4).
Vitenskapelig artikkel
Hossfeld, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin. (2018) A new QoE fairness index for QoE management. Quality and User Experience.
Vitenskapelig artikkel
Hoßfeld, Tobias; Varela, Martin; Heegaard, Poul Einar; Skorin-Kapov, Lea. (2018) QoE Analysis of the Setup of Different Internet Services for FIFO Server Systems. Lecture Notes in Computer Science (LNCS). volum 10740 LNCS.
Vitenskapelig artikkel
Oostenbrink, Jorik; Kuipers, Fernando; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2018) Evaluating Local Disaster Recovery Strategies. Performance Evaluation Review. volum 46 (2).
Vitenskapelig artikkel
Vizarreta, Petra; Trivedi, Kishor; Helvik, Bjarne Emil; Heegaard, Poul Einar; Blenk, Andreas; Kellerer, Wolfgang; Mas Machuca, Carmen. (2018) Assessing the Maturity of SDN Controllers with Software Reliability Growth Models. IEEE Transactions on Network and Service Management. volum 15 (3).
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2018) Non-Markovian Survivability Assessment Model for Infrastructure Wireless Networks. Proceedings of the International Symposium on Wireless Communication Systems. volum 2018-August.
Vitenskapelig artikkel
Biczok, Gergely; Dramitinos, Manos; Toka, Lazio; Heegaard, Poul Einar; Lønsethagen, Håkon. (2017) Manufactured by software: SDN-enabled multi-operator composite services with the 5G Exchange. IEEE Communications Magazine. volum 55 (4).
Vitenskapelig artikkel
Gullhav, Anders Nordby; Nygreen, Bjørn; Heegaard, Poul Einar. (2017) Simulation of the response time distribution of fault-tolerant multi-tier cloud services. Journal of Simulation. volum 11 (4).
Vitenskapelig artikkel
Hossfeld, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin. (2017) Definition of QoE Fairness in Shared Systems. IEEE Communications Letters. volum 21 (1).
Vitenskapelig artikkel
Nencioni, Gianfranco; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2017) Including Failure Correlation in Availability Modeling of a Software-Defined Backbone Network. IEEE Transactions on Network and Service Management. volum 14 (4).
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2017) Survivability analysis of a two-tier infrastructure-based wireless network. Computer Networks. volum 128.
Vitenskapelig artikkel
Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar. (2016) Quality of Experience-assessment of WebRTC based video communication. ERCIM News.
Populærvitenskapelig artikkel
Bartnes, Maria; Moe, Nils Brede; Heegaard, Poul Einar. (2016) The future of information security incident management training: A case study of electrical power companies. Computers & Security. volum 61.
Vitenskapelig artikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Varela, Martin; Möller, Sebastian. (2016) QoE Beyond the MOS: An In-Depth Look at QoE via Better Metrics and their Relation to MOS. Quality and User Experience.
Vitenskapelig artikkel
Hu, Chengchen; Li, Hao; Jiang, Yuming; Cheng, Yu; Heegaard, Poul Einar. (2016) Deep Semantics Inspection over Big Network Data at Wire Speed. IEEE Network. volum 30 (1).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2015) Software Performance Evaluation Utilizing UML Specification and SRN Model and Their Formal Representation. Journal of Software. volum 10 (5).
Vitenskapelig artikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2015) Consequences of Increased Automation in Smart Grids. ERCIM News. volum 102.
Short communication
Wäfler, Jonas; Heegaard, Poul Einar. (2015) How to use mobile communication in critical infrastructures: A dependability analysis. Lecture Notes in Computer Science (LNCS). volum 9338.
Vitenskapelig artikkel
Zerihun, Tesfaye Amare; Helvik, Bjarne Emil; Heegaard, Poul Einar; Krogstie, John. (2015) Quantitative Modelling of Digital Ecosystems. ERCIM News.
Short communication
Wäfler, Jonas; Heegaard, Poul Einar. (2014) Quantifying Influence of Strategies and Network Properties in Repairing Simultaneous Failures in Smart Grid. NIKT: Norsk IKT-konferanse for forskning og utdanning.
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) Detecting Period and Burst Durations in Video Streaming by means of Active Probing. International Journal of Computer and Communication Engineering. volum 2 (4).
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) Estimating Available Bandwidth on Access Links by Means of Stratified Probing. International Journal of Electrical Energy. volum 1 (4).
Vitenskapelig artikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2013) Interdependency Modeling in Smart Grid and the Influence of ICT on Dependability. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2013) Modeling and Quantifying the Survivability of Telecommunication Network Systems under Fault Propagation. Lecture Notes in Computer Science (LNCS). volum 8115.
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2013) Network Survivability under Disaster Propagation: Modeling and Analysis. IEEE Wireless Communications and Networking Conference.
Vitenskapelig artikkel
Chilwan, Ameen; Undheim, Astrid; Heegaard, Poul Einar. (2012) Effects of Dynamic Cloud Cluster Load on Differentiated Service Availability. International Conference on Data Networks, Communications, Computers - Proceedings.
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar; Machida, Fumio; Trivedi, Kishor. (2012) A performability modeling framework considering service components deployment. International Journal On Advances in Networks and Services. volum 5 (3&4).
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2012) Improving Fairness in QoS and QoE domains for Adaptive Video Streaming. International Journal On Advances in Networks and Services. volum 5 (3&4).
Vitenskapelig artikkel
Xie, Lang; Heegaard, Poul Einar; Jiang, Yuming. (2012) Modeling and Analysis of the Survivability of an Infrastructure-Based Wireless Network. Lecture Notes in Computer Science (LNCS). volum 7479.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2011) A Bio-inspired Method for Distributed Deployment of Services. New generation computing. volum 29 (2).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2011) Derivation of Stochastic Reward Net (SRN) from UML Specification Considering Cost Efficient Deployment Management of Collaborative Service Components. International Journal of New Computer Architectures and their Applications (IJNCAA). volum 1 (3).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2011) A performance modeling framework incorporating cost efficient deployment of multiple collaborating components. Communications in Computer and Information Science. volum 179.
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2011) A performance modeling framework incorporating service components deployment issue. International Proceedings of Computer Science and Information Technology. volum 5.
Vitenskapelig artikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2011) A Monitor Plane Component for Adaptive Video Streaming. NIKT: Norsk IKT-konferanse for forskning og utdanning.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar. (2010) Optimization and Service Deployment in Private and Public Clouds. ERCIM News.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar. (2010) Swarm Intelligence Heuristics for Component Deployment. Lecture Notes in Computer Science (LNCS). volum 6164.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2010) Component Deployment Using Parallel Ant-nests. International Journal of Autonomous and Adaptive Communications Systems.
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto. (2010) Overhead Reduction in Distributed Path Management System. Computer Networks. volum 54 (6).
Vitenskapelig artikkel
Khan, Razib Hayat; Heegaard, Poul Einar. (2010) Translation from UML to SPN model: A performance modeling framework. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Ofigsbø, Mona Holsve; Mjølsnes, Stig Frode; Heegaard, Poul Einar; Nilsen, Leif. (2010) Reducing the Cost of Certificate Revocation: A Case Study. Lecture Notes in Computer Science (LNCS). volum 6391.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Meling, Hein. (2009) Laying pheromone trails for balanced and dependable component mappings. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar; Herrmann, Peter. (2009) Foraging for Better Deployment of Replicated Service Components. Lecture Notes in Computer Science (LNCS). volum 5523.
Vitenskapelig artikkel
Heegaard, Poul Einar; Sandmann, Werner. (2009) Importance Sampling Simulations of Phase-Type Queues. Winter simulation conference : proceedings.
Vitenskapelig artikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2009) Network survivability modeling. Computer Networks. volum 53 (8).
Vitenskapelig artikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2009) Survivability Modeling with Stochastic Reward Nets. Winter simulation conference : proceedings.
Vitenskapelig artikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2008) Cost-Efficient Deployment of Collaborating Components. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Heegaard, Poul Einar. (2008) Empirical Data from Mobile and IP Telephony. Journal of Communication Software and Systems. volum 4 (1).
Vitenskapelig artikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Wittner, Otto Jonassen. (2008) The Cross Entropy Ant System for Network Path Management. Telektronikk. volum 104 (1).
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto Jonassen. (2006) Restoration performance vs. overhead in a swarm intelligence path management system. Lecture Notes in Computer Science (LNCS). volum 4150.
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto Jonassen. (2006) Self-tuned Refresh Rate in a Swarm Intelligence Path Management System. Lecture Notes in Computer Science (LNCS). volum 4124.
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto; Helvik, Bjarne Emil. (2005) Self-managed virtual path management in dynamic networks. Lecture Notes in Computer Science (LNCS).
Vitenskapelig artikkel
Heegaard, Poul Einar; Wittner, Otto; Helvik, Bjarne Emil. (2005) Self-management of virtual paths in dynamic networks. Lecture Notes in Computer Science (LNCS). volum 3460.
Vitenskapelig artikkel
Viken, Brynjar Åge; Heegaard, Poul Einar. (2001) A Distributed Test Environment for IP Performance. Telektronikk. volum 97 (2/3).
Populærvitenskapelig artikkel
Viken, Brynjar Åge; Heegaard, Poul Einar. (2001) GenSyn - Generator of synthetic Internet traffic. Network Analysis Times Publisher: National Laboratory for Applied Network Research/Measurement and Operations Analysis Team. volum 2 (1).
Populærvitenskapelig artikkel
Heegaard, Poul Einar. (1998) A scheme for adaptive biasing in importance sampling. AEU - International Journal of Electronics and Communications.
Vitenskapelig artikkel

Bøker

Heegaard, Poul Einar; Helvik, Bjarne Emil; Rak, Jacek. (2018) Proceedings 10th International Workshop on Resilient Networks Design and Modeling (RNDM). IEEE Press. 2018. ISBN 978-1-5386-7030-9. International Workshop on Resilient Networks Design and Modeling (10).
Vitenskapelig antologi/Konferanseserie
Kuipers, Fernando; Heegaard, Poul Einar. (2012) Self-organizing systems : 6th International Workshop IWSOS 2012. Springer. 2012. ISBN 978-3-642-28582-0. Lecture Notes in Computer Science (7166).
Vitenskapelig antologi/Konferanseserie
Bjørndalen, John Markus; Haugland, Dag; Heegaard, Poul Einar; Løkketangen, Arne; Møller-Pedersen, Birger; Rong, Chunming; Runde, Ragnhild Kobro; Sandnes, Frode Eika; Strøm, Torbjørn; Trætteberg, Hallvard. (2007) NIK 2007. Tapir Akademisk Forlag. 2007. ISBN 978-82-519-2272-2.
Vitenskapelig antologi/Konferanseserie

Del av bok/rapport

Adrah, Charles Mawutor; Palma, David; Kure, Øivind; Heegaard, Poul Einar. (2022) Deploying 5G architecture for protection systems in smart distribution grids. 2022 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT 2022).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gebraselase, Befekadu; Adrah, Charles Mawutor; Zerihun, Tesfaye Amare; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2022) Blockchain Support For Time-Critical Self-Healing In Smart Distribution Grids. 2022 IEEE PES Innovative Smart Grid Technologies Europe - ISGT-Europe.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Garau, Michele; Muka, Romina; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2021) Co-simulation and Discrete Event Simulation for Reliability Assessment of Power System and ICT: A Comparison. 2021 5th International Conference on System Reliability and Safety (ICSRS).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Haugli, Fredrik Bakkevig; Heegaard, Poul Einar. (2021) Modeling framework for study of distributed and centralized smart grid system services. 2021 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids - SmartGridComm.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Mehmood, Kashif; Mendis, Handunneththi V. Kalpanie; Kralevska, Katina; Heegaard, Poul Einar. (2021) Intent-based Network Management and Orchestration for Smart Distribution Grids. 28th International Conference on Telecommunications.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Mendis, Handunneththi V. Kalpanie; Heegaard, Poul Einar; Casares-Giner, Vicente; Li, Frank Yong; Kralevska, Katina. (2021) Transient Performance Modelling of 5G Slicing with Mixed Numerologies for Smart Grid Traffic. 2021 IEEE 26th International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Muka, Romina; Garau, Michele; Heegaard, Poul Einar. (2021) Genetic algorithm for placement of IEDs for fault location in smart distribution grids. CIRED 2021 - The 26th International Conference and Exhibition on Electricity Distribution.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Muka, Romina; Garau, Michele; Tola, Besmir; Heegaard, Poul Einar. (2021) Effect of 5G communication service failure on placement of Intelligent Electronic Devices in Smart Distribution Grids. 2021 IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids - SmartGridComm.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gajic, Marija; Furdek, Marija; Heegaard, Poul Einar. (2020) A Framework for Spatial and Temporal Evaluation of Network Disaster Recovery. 32nd International Teletraffic Congress (ITC 32).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Helvik, Bjarne Emil; Vizarreta, Petra; Heegaard, Poul Einar; Trivedi, Kishor; Mas Machuca, Carmen. (2020) Modelling of Software Failures. Guide to Disaster-Resilient Communication Networks.
Faglig kapittel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin; Fiedler, Markus. (2020) From QoS Distributions to QoE Distributions: a System's Perspective. Proceedings of the 2020 IEEE Conference on Network Softwarization.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Kamisinski, Andrzej; Musumeci, Francesco; Hmaity, Ali; Tornatore, Massimo; Casazza, Marco; Farshad, Arsham; Hutchison, David; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2020) Resilient NFV Technology and Solutions. Guide to Disaster-Resilient Communication Networks.
Faglig kapittel
Myhre, Stine Fleischer; Fosso, Olav B; Heegaard, Poul Einar; Gjerde, Oddbjørn; Kjølle, Gerd Hovin. (2020) Modeling Interdependencies with Complex Network Theory in a Combined Electrical Power and ICT System. 2020 International Conference on Probabilistic Methods Applied to Power Systems - PMAPS.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Ammar, Doreid; De Moor, Katrien; Skorin-Kapov, Lea; Fiedler, Markus; Heegaard, Poul Einar. (2019) Exploring the Usefulness of Machine Learning in the Context of WebRTC Performance Estimation. 44th Annual IEEE Conference on Local Computer Networks (LCN 2019).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
De Moor, Katrien; Borge, Hege Krokås; Heegaard, Poul Einar. (2019) Young children and the use of video chat: implications for QoE research. Proceedings of the 11th International Conference on Quality of Multimedia Experience (QoMEX 2019).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Atzori, Luigi; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2019) The Interplay between QoE, User Behavior and System Blocking in QoE Management. 2019 22nd Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2019) Fundamental Relationships for Deriving QoE in Systems. Proceedings of the 11th International Conference on Quality of Multimedia Experience (QoMEX 2019).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Muka, Romina; Haugli, Fredrik Bakkevig; Vefsnmo, Hanne; Heegaard, Poul Einar. (2019) Information Inconsistencies in Smart Distribution Grids under Different Failure Causes modelled by Stochastic Activity Networks. 2019 AEIT International Annual Conference.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Esposito, Christian; Gouglidis, Antonios; Hutchison, David; Gurtov, Andrei; Helvik, Bjarne Emil; Heegaard, Poul Einar; Rizzo, Gianluca; Rak, Jacek. (2018) On the Disaster Resiliency within the Context of 5G Networks: The RECODIS Experience. 2018 European Conference on Networks and Communications (EuCNC).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Metzger, Florian; Heegaard, Poul Einar. (2018) Traffic modeling for aggregated periodic IoT data. 21st Conference on Innovation in Clouds, Internet and Networks (ICIN 2018).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Varela, Martin; Heegaard, Poul Einar; Skorin-Kapov, Lea. (2018) Observations on Emerging Aspects in QoE Modeling and Their Impact on QoE Management. 2018 Tenth International Conference on Quality of Multimedia Experience (QoMEX).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Moldovan, Christian; Skorin-Kapov, Lea; Heegaard, Poul Einar; Hossfeld, Tobias. (2018) Optimal Fairness and Quality in Video Streaming with Multiple Users. ITC 30 - Teletraffic in a Smart World.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Zerihun, Tesfaye Amare; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2018) A modeling approach for dependability analysis of smart distribution grids. 2018 21st Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar. (2017) An Experimental Platform for QoE Studies of WebRTC-based Multi-Party Video Communication. Proceedings from The Fourth International Conference on Computer Science, Computer Engineering, and Education Technologies (CSCEET2017).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
De Moor, Katrien; Arndt, Sebastian; Ammar, Doreid; Voigt-Antons, Jan-Niklas; Perkis, Andrew; Heegaard, Poul Einar. (2017) Exploring diverse measures for evaluating QoE in the context of WebRTC. Proceedings of the 9th International Conference on Quality of Multimedia Experience (QoMEX 2017).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Skorin-Kapov, Lea; Varela, Martin. (2017) No Silver Bullet: QoE Metrics, QoE Fairness, and User Diversity in the Context of QoE Management. Proceedings of the 9th International Conference on Quality of Multimedia Experience (QoMEX 2017).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Vizarreta, Petra; Heegaard, Poul Einar; Helvik, Bjarne Emil; Kellerer, Wolfgang; Mas Machuca, Carmen. (2017) Characterization of Failure Dynamics in SDN Controllers. 9th International Workshop on Resilient Netwrorks Design and Modeling.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Vizarreta, Petra; Trivedi, Kishor; Helvik, Bjarne Emil; Heegaard, Poul Einar; Kellerer, Wolfgang; Mas Machuca, Carmen. (2017) An empirical study of software reliability in SDN controllers. Proceedings of the 13th International Conference on Network and Service Management [CNSM 2017].
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Ammar, Doreid; De Moor, Katrien; Heegaard, Poul Einar; Fiedler, Markus; Xie, Min. (2016) Revealing the Dark Side of WebRTC Statistics Collected by Google Chrome. Proceedings from Eighth International Conference on Quality of Multimedia Experience, QoMEX 2016.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Ammar, Doreid; De Moor, Katrien; Xie, Min; Fiedler, Markus; Heegaard, Poul Einar. (2016) Video QoE killer and performance statistics in WebRTC-based video communication. Proceedings from 2016 IEEE Sixth International Conference on Communications and Electronics (ICCE).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Biczok, Gergely; Toka, Lazio. (2016) Sharing is Power: Incentives for Information Exchange in Multi-Operator Service Delivery. 2016 IEEE Global Communications Conference (GLOBECOM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Nencioni, Gianfranco; Wäfler, Jonas. (2016) Managed Dependability in Interacting Systems. Principles of Performance and Reliability Modeling and Evaluation Essays in Honor of Kishor Trivedi on his 70th Birthday.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Skorin-Kapov, Lea; Heegaard, Poul Einar; Varela, Martin; Chen, Kuan-ta. (2016) On Additive and Multiplicative QoS-QoE Models for Multiple QoS Parameters. Proceedings of the 5th ISCA/DEGA Workshop on Perceptual Quality of Systems PQS 2016.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Mas Machuca, Carmen; Secci, Stefano; Vizerrata, Petra; Kuipers, Fernando; Gouglidis, Antonios; Hutchison, David; Jouet, Simon; Pezaros, Dimitrios; Elmokashif, Ahmed; Heegaard, Poul Einar; Ristov, Sasko; Gusev, Marjan. (2016) Technology-related Disasters: A Survey towards Disaster-resilient Software Defined Networks. Proceedings of 2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Nencioni, Gianfranco; Helvik, Bjarne Emil; Gonzalez, Andres Javier; Heegaard, Poul Einar; Kamisinski, Andrzej. (2016) Availability Modelling of Software-Defined Backbone Networks. 46th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Sieber, Christian; Heegaard, Poul Einar; Hoßfeld, Tobias; Kellerer, Wolfgang. (2016) Sacrificing efficiency for quality of experience: YouTube's redundant traffic behavior. Proceedings from IFIP Networking 2016.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Tornatore, Massimo; André, Joao; Babarczi, Peter; Braun, Torsten; Følstad, Eirik Larsen; Heegaard, Poul Einar; Hmaity, Ali; Furdek, Marija; Jorge, Luisa; Kmiecik, Wojciech; Mas Machuca, Carmen; Martins, Lucia; Medeiros, Carmo; Musumeci, Francesco; Pasic, Alija; Rak, Jacek; Simpson, Steven; Travanca, Rui; Voyiatzis, Artemios. (2016) A Survey on Network Resiliency Methodologies against Weather-based Disruptions. Proceedings of 2016 8th International Workshop on Resilient Networks Design and Modeling (RNDM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gonzalez, Andres Javier; Grønsund, Pål R.; Mahmood, Kashif; Helvik, Bjarne Emil; Heegaard, Poul Einar; Nencioni, Gianfranco. (2015) Service availability in the NFV Virtualized Evolved Packet Core. 2015 IEEE Global Communications Conference (GLOBECOM).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Mendiratta, Veena. (2015) Achieving Dependability in Software-Defined Networking - A Perspective. 7th International Workshop on Reliable Networks Design and Modeling (RNDM 2015).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Trivedi, Kishor; Machida, Fumio. (2015) Survivability as a Generalization of Recovery. Proceedings of the 2015 11th International Conference on The Design of Reliable Communication Networks (DRCN).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Hossfeld, Tobias; Heegaard, Poul Einar; Varela, Martin. (2015) QoE beyond the MOS: Added value using quantiles and distributions. 2015 Seventh International Workshop on Quality of Multimedia Experience (QoMEX) Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2015) Interdependency in Smart Grid Recovery. 7th International Workshop on Reliable Networks Design and Modeling (RNDM 2015).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Gullhav, Anders N.; Nygreen, Bjørn; Heegaard, Poul Einar. (2013) Approximating the Response Time Distribution of Fault-tolerant Multi-tier Cloud Services. 2013 IEEE/ACM 6th International Conference on Utility and Cloud Computing.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; De Moor, Katrien; Heegaard, Poul Einar; Instefjord, Anders. (2013) Investigating Quality of Experience in the context of adaptive video streaming: findings from an experimental user study. Norsk informatikkonferanse NIK 2013, Universitetet i Stavanger, 18. - 20.november 2013.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) A Measurement Study of Active Probing on Access Links. Advances in Communication Networking. 19th EUNICE/IFIP WG 6.6 International Workshop Chemnitz, Germany, August 28-30m 2913 Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2013) Group Based Traffic Shaping for Adaptive HTTP Video Streaming. IEEE International Conference on Advanced Information Networking and Applications IEEE AINA 2013.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2013) A Combined Structural and Dynamic Modelling Approach for Dependability Analysis in Smart Grid. Proceedings of the 28th Annual ACM Symposium on Applied Computing.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Wäfler, Jonas; Heegaard, Poul Einar. (2013) Structural Dependability Analysis in Smart Grid under Simultaneous Failures. Proceedings of 2013 IEEE International Conference on Smart Grid Communications (SmartGridComm).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Xie, Lang; Jiang, Yuming; Heegaard, Poul Einar. (2013) Modelling and Analysis of the Survivability of Telecommunication Networks. Proceedings of the 2013 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS ’13).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Khan, Razib Hayat; Heegaard, Poul Einar; Wali Ullah, Kazi. (2012) Performance Evaluation of Distributed System Using SPN. Petri Nets - Manufacturing and Computer Science.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2012) Improving Perceived Fairness and QoE for Adaptive Video Streams. Proceedings of ICNS 2012.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar; Instefjord, Anders. (2012) Improving Fairness for Adaptive HTTP Video Streaming. Information and Communication Technologies - 18th EUNICE/ IFIP WG 6.2, 6.6 International Conference, EUNICE 2012, Budapest, Hungary, August 29-31, 2012. Proceedings.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Undheim, Astrid; Chilwan, Ameen; Heegaard, Poul Einar. (2011) Differentiated Availability in Cloud Computing SLAs. Proceedings from 2011 12th IEEE/ACM International Conference on Grid Computing Grid 2011.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2011) Towards Knowledge-driven QoE Optimization in Home Gateways. ICNS 2011, The Seventh International Conference on Networking and Services.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Brugge, Jonathan; Paquereau, Laurent; Heegaard, Poul Einar. (2010) Experience Report on Implementing and Simulating a Routing Protocol in NS-2 and NS-3. Proceedings of the 2nd International Conference on Advances in System Simulation (SIMUL).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2010) Ant system for service development in private and public clouds. Proceeding of the 2nd workshop on Bio-inspired algorithms for distributed systems.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Villa, Bjørn Jonny; Heegaard, Poul Einar. (2010) Monitoring and control of QoE in media streams by click software router. Norsk Informatikkonferanse.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Xie, Lang; Heegaard, Poul Einar; Zhang, Jin; Xiang, Jie. (2010) System State aware Admission Control scheme for IEEE 802.16 WiMAX-based healthcare system. Proceedings of the 6th International Wireless Communications and Mobile Computing Conference, IWCMC 2010, Caen, France, June 28 - July 2, 2010.
Annet
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2009) Laying Pheromone Trails for Balanced and Dependable Component Mappings. Integrert? Innvandrere og barn av innvandrere i utdanning og arbeidsliv.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar; Herrmann, Peter. (2009) Foraging for Better Deployment of Replicated Service Components. Distributed Applications and Interoperable Systems.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Østhus, Ivar Conradi; Hansen, Lars-Petter Gunhildsberg; Heegaard, Poul Einar. (2009) Online Broadband Test Tools. Norsk Informatikk Konferanse 2009.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2008) Survivability Quantification of Communication Services. The 38th Annual IEEE/IFIP International Conference on Dependable Systems and Networks.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Trivedi, Kishor. (2008) Survivability in Real-sized Networks Quantified by Analytical Delay Distributions. The Third International Conference on Systems and Networks Communications on Systems and Networks Communications.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2008) Adaptable Model-based Component Deployment Guided by Artificial Ants. Proceedings of 2008 ICST Second International Conference on Autonomic Computing and Communication Systems and Workshop.
Annet
Kjeldsen, Vebjørn; Wittner, Otto Jonassen; Heegaard, Poul Einar. (2008) Distributed and Scalable Path Management by a System of Cooperating Ants. WORLDCOMP’08.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar. (2007) Empirical Observations of Traffic Patterns in Mobile and IP Telephony. Next Generation Teletraffic and Wired/Wireless Advanced Networking.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar. (2007) Evolution of Traffic Patterns in Telecommunication Systems. Proceedings from International Conference on Communications and Networking in China (ChinaCom 2007).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Sandmann, Werner. (2007) Ant-based Approach for Determining the Change of Measure in Importance Sampling. Proceedings of the 2007 Winter Simulation Conference.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Sandmann, Werner. (2007) Efficient Estimation of Loss Rates in Optical Packet Switched Networks with Wavelength Conversion. Proceedings from Second International Conference on Systems and Networks Communications (ICSNC 2007).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Sandmann, Werner. (2007) Evaluating Differentiated Quality of Service Parameters in Optical Packet Switching. Next Generation Teletraffic and Wired/Wireless Advanced Networking.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Stray, Petter; Jelle, Thomas; Heegaard, Poul Einar. (2007) Field Test of Mobile Wi-Fi Terminals in a Wireless City. Norsk Informatikkonferanse (NIK 2007).
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Tjora, Åsmund; Skavhaug, Amund; Heegaard, Poul Einar. (2007) A Mathematical Model for Run-Time Distributions in a Fault Tolerant System with Nonhomogeneous Passive Replicas. DECOS/ERCIM Workshop on Dependable Embedded Systems.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Heegaard, Poul Einar; Helvik, Bjarne Emil; Andreassen, Ragnar. (2005) Application of Rare Event Techniques to Trace Driven Simulation. Proceedings of the 2005 Winter Simulation Conference.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Paquereau, Laurent; Viken, Brynjar; Heegaard, Poul Einar. (2005) Combining performance monitoring and location data in wireless networks. Norsk informatikkonferanse (NIK) 2005.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Görg, Carmelita; Lamers, Eugen; Fuß, Oliver; Heegaard, Poul Einar. (2001) Rare Event Simulation. Proceedings of the European COST (256) telecommunication Symposium.
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel

Rapport

Nencioni, Gianfranco; Helvik, Bjarne Emil; Heegaard, Poul Einar. (2017) Implementing the Availability Model of a Software-Defined Backbone Network in Möbius. 2017.
Rapport
Nencioni, Gianfranco; Helvik, Bjarne Emil; Gonzalez, Andres Javier; Heegaard, Poul Einar; Kamisinski, Andrzej. (2016) Impact of SDN Controllers Deployment on Network Availability. 2016.
Rapport
Sand, Kjell; Heegaard, Poul Einar. (2015) Next Generation Control Centres - State of art and future scenarios. Version 2.0. 2015. ISBN 978-82-7200-052-2.
Rapport
Østrem, Trond; Bolkesjø, Torjus Folsland; Rong, Chunming; Wolff, Robert; Sand, Kjell; Mathisen, Geir; Coldevin, Grete Håkonsen; Ryghaug, Marianne; Tomasgard, Asgeir; Heegaard, Poul Einar; Fosso, Olav B; Midtgård, Ole-Morten; Novakovic, Vojislav; Hovd, Morten. (2015) Norwegian Smart Grid Research Strategy. 2015.
Rapport
Emstad, Peder Johannes; Heegaard, Poul Einar; Helvik, Bjarne Emil; Paquereau, Laurent. (2007) Dependability and performance with discrete event simulation. Tapir Akademisk Forlag. 2007.
Kompendium
Heegaard, Poul Einar; Fuglem, Ingebrigt. (2006) Demonstrating ant-based monitoring on software IP routers (Deliverable 14). 2006.
Rapport
Emstad, Peder Johannes; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2004) Pålitelighet og ytelse i informasjons- og kommunikasjonssystem - Grunnlag. Tapir Akademisk Forlag. 2004.
Kompendium
Heegaard, Poul Einar. (2004) Evaluation of basic services in AHN, P2P and Grid networks (Deliverable 07). 2004.
Rapport
Heegaard, Poul Einar. (2004) Evaluation plan (Deliverable 04). 2004.
Rapport
Heegaard, Poul Einar. (2004) Implementation of basic services in AHN, P2P and Grid networks (Deliverable 06). 2004.
Rapport
Heegaard, Poul Einar. (2004) Models for Basic Services in AHN, P2P Networks (Deliverable 05). 2004.
Rapport
Wittner, Otto; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2002) Swarm Based Distributed Search in the AMIGOS Environment. 2002. AVANTEL Technical Report.
Rapport
Emstad, Peder Johannes; Heegaard, Poul Einar; Helvik, Bjarne Emil. (1999) Pålitelighet og ytelse i informasjons- og kommunikasjonssystem. Grunnlag. 1999.
Kompendium
Heegaard, Poul Einar. (1998) Efficient simulation of network performance by importance sampling. 1998. ISBN 82-471-0228-5. Doktor ingeniøravhandling (1998:33).
Doktorgradsavhandling

Undervisning

Emner

Formidling

2018

Vitenskapelig foredrag

Esposito, Christian; Gouglidis, Antonios; Hutchison, David; Gurtov, Andrei; Helvik, Bjarne Emil; Heegaard, Poul Einar; Rizzo, Gianluca; Rak, Jacek. (2018) On the Disaster Resiliency within the Context of 5G Networks: The RECODIS Experience. European Conference on Networks and Communications [EuCNC 2018] ; Ljubljana. 2018-06-18 - 2018-06-21.

2017

Vitenskapelig foredrag

Heegaard, Poul Einar; Trivedi, Kishor. (2017) Modeling and quantification of network survivability. International Teletraffic Congress (ITC 29) ; 2017-09-04 - 2017-09-08.
Vitenskapelig foredrag

Heegaard, Poul Einar; Trivedi, Kishor. (2017) Modeling and quantification of network survivability. 9th International Workshop on Resilient Networks Design and Modeling (RNDM 2017) ; 2017-09-04 - 2017-09-06.

2016

Vitenskapelig foredrag

Moldovan, Christian; Sieber, Christian; Heegaard, Poul Einar; Hossfeld, Tobias; Kellerer, Wolfgang. (2016) YouTube Can Do Better: Getting the Most Out of Video Adaptation. Fourth International IEEE Workshop on Quality of Experience Centric Management. (in conjunction with ITC 2016, Würzburg) ; Würzburg. 2016-09-16.

2015

Vitenskapelig foredrag

Heegaard, Poul Einar. (2015) Achieving Dependability in Software-Defined Networking - A Perspective. 7th International Workshop on Reliable Networks Design and Modeling (RNDM 2015) ; Munich. 2015-10-05 - 2015-10-07.
Faglig foredrag

Heegaard, Poul Einar. (2015) Modeling and quantification of network survivability (Tutorial). 2015 11th International Conference on The Design of Reliable Communication Networks (DRCN) ; 2015-03-24 - 2015-03-27.
Faglig foredrag

Heegaard, Poul Einar. (2015) Survivability as a Generalization of Recovery. 2015 11th International Conference on The Design of Reliable Communication Networks (DRCN) ; 2015-03-24 - 2015-03-27.

2013

Vitenskapelig foredrag

Gullhav, Anders N.; Nygreen, Bjørn; Heegaard, Poul Einar. (2013) Approximating the Response Time Distribution of Fault-tolerant Multi-tier Cloud Services. 2013 IEEE/ACM 6th International Conference on Utility and Cloud Computing (UCC) . IEEE/ACM, Technical University of Dresden; Dresden. 2013-12-09 - 2013-12-12.
Vitenskapelig foredrag

Villa, Bjørn Jonny; De Moor, Katrien; Heegaard, Poul Einar; Instefjord, Anders. (2013) Investigating Quality of Experience in the context of adaptive video streaming: findings from an experimental user study. Norsk informatikkonferanse NIK 2013 ; Stavanger. 2013-11-18 - 2013-11-20.
Vitenskapelig foredrag

Wäfler, Jonas; Heegaard, Poul Einar. (2013) A Combined Structural and Dynamic Modelling Approach for Dependability Analysis in Smart Grid. 28th ACM Symposion on Applied Computing (SAC) . ACM; Coimbra. 2013-03-18 - 2013-03-22.
Faglig foredrag

Wäfler, Jonas; Heegaard, Poul Einar. (2013) Interdependency Modeling in Smart Grid and the Influence of ICT on Dependability. 19th EUNICE/IFIP WG 6.6 International Workshop . EUNICE/IFIP WG 6.6; Chemnitz. 2013-08-28 - 2013-08-30.
Faglig foredrag

Wäfler, Jonas; Heegaard, Poul Einar. (2013) Structural Dependability Analysis in Smart Grid under Simultaneous Failures. 2013 IEEE International Conference on Smart Grid Communications (SmartGridComm) . IEEE; Vancouver. 2013-10-21 - 2013-10-24.

2012

Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar; Machida, Fumio; Trivedi, Kishor. (2012) From UML to SRN: A Performability Modeling Framework Considering Service Components Deployment. 8th International Conference on Networking & Services ; 2012-03-25 - 2012-03-30.
Vitenskapelig foredrag

Aurelius, Andreas; Arvidsson, Åke; Heegaard, Poul Einar; Villa, Bjørn Jonny; Kihl, Maria; Zhang, Yichi. (2012) Residential broadband Internet traffic - analysis of link load in a Swedish municipal network. 8th Swedish National Computer Networking Workshop (SNCNW 2012) ; 2012-06-07 - 2012-06-08.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar; Machida, Fumio. (2012) From UML to SRN: A tool based support for performability modeling of distributed system considering reusable software components. 23rd IAESTD International Conference on Modelling and Simulation ; 2012-07-03 - 2012-07-05.

2011

Vitenskapelig foredrag

Gullhav, Anders N.; Nygreen, Bjørn; Heegaard, Poul Einar. (2011) Service Deployment Decisions in Cloud Data Centers Based on Service Level Agreements (SLA). Informas 2011 Annual Meeting . Informs; Charlotte, NC. 2011-11-13 - 2011-11-16.
Programdeltagelse

Heegaard, Poul Einar. (2011) Innslag om Telenors mobilenettfeil i 1730 på P4. P4 [Radio]. 2011-06-16.
Intervju

Heegaard, Poul Einar. (2011) Ny app gjer mobilen til naudnett. NRK Vitenskap og teknologi [Internett]. 2011-08-11.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2011) QoS og tjenestekvalitet. Mobilt bredbånd - LTE - WiMAX . Tekna; Oslo. 2011-03-29 - 2011-03-30.
Vitenskapelig foredrag

Heegaard, Poul Einar; Trivedi, Kishor. (2011) Network Survivability Modeling and Quantification (Tutorial). International Teletraffic Congress . International Teletraffic Congress; San Francisco. 2011-09-08 - 2011-09-09.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2011) A performance modeling framework incorporating cost efficient deployment of multiple collaborating components. International Conference on Software Engineering & Computer Systems ; 2011-06-27 - 2011-06-29.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2011) A performance modeling framework incorporating service components deployment issue. International Conference on Computer Communication & Management ; 2011-05-02 - 2011-05-03.
Vitenskapelig foredrag

Villa, Bjørn Jonny; Heegaard, Poul Einar. (2011) Towards Knowledge-driven QoE Optimization in Home Gateways. ICNS 2011, The Seventh International Conference on Networking and Services . IARA; Mestre/Venice. 2011-05-22 - 2011-05-27.

2010

Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2010) A Performance modeling framework incorporating cost efficient deployment of collaborating components. 2nd International Conference on Software Technology and Engineering, 2010 ; 2010-10-03 - 2010-10-05.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2010) Translation from UML to Markov model: A performance modeling framework for managing behavior of multiple collaborative sessions and instances. 3rd IEEE International Conference on Computer Science and Information Technology (ICCSIT), 2010 ; 2010-07-09 - 2010-07-11.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2010) Translation from UML to SPN model: A performance modeling framework. Networked Services and Applications – Engineering, Control and Management (EUNICE) ; 2010-06-28 - 2010-06-30.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2010) Translation from UML to SPN model: A performance modeling framework for managing behavior of multiple collaborative sessions and instances. International Conference on Computer Design and Applications (ICCDA), 2010 ; 2010-06-25 - 2010-06-27.
Vitenskapelig foredrag

Csorba, Mate Jozsef; Heegaard, Poul Einar. (2010) Swarm Intelligence Heuristics for Component Deployment. In proc. of IFIP EUNICE 2010 . IFIP; Trondheim. 2010-06-28 - 2010-06-30.
Vitenskapelig foredrag

Csorba, Mate Jozsef; Meling, Hein; Heegaard, Poul Einar. (2010) Ant System for Service Deployment in Private and Public Clouds. In proceedings of BADS 2010 (Workshop on Bio-Inspired Algorithms for Distributed Systems) ; Washington, DC. 2010-06-11 - 2010-06-11.
Vitenskapelig foredrag

Heegaard, Poul Einar; Følstad, Eirik Larsen. (2010) Kvalitet i trådløse nett - mer enn bare radioplanlegging. Mobilt bredbånd - LTE - WiMAX . Tekna; Gardermoen. 2010-03-16 - 2010-03-17.
Vitenskapelig foredrag

Villa, Bjørn Jonny; Heegaard, Poul Einar. (2010) Monitoring and Control of QoE in Media Streams by Click. Norsk Informatikk Konferenase ; 2010-11-22 - 2010-11-24.
Vitenskapelig foredrag

Xie, Lang; Heegaard, Poul Einar; Zhang, Jin; Xiang, Jie. (2010) System State aware Admission Control scheme for IEEE 802.16 WiMAX-based healthcare system. The 6th International Wireless Communication & Mobile Computing Conference (IWCMC 2010) ; 2010-06-28 - 2010-07-02.
Vitenskapelig foredrag

Xie, Lang; Heegaard, Poul Einar; Zhang, Yan; Xiang, Jie. (2010) Reliable Channel Selection and Routing for Real-time Services over Cognitive Radio Mesh Networks. The 7th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness (QShine 2010) ; 2010-11-17 - 2010-11-19.

2009

Vitenskapelig foredrag

Heegaard, Poul Einar; Sandmann, Werner. (2009) Importance Sampling Simulations of Phase-Type Queues. 2009 Winter Simulation Conference ; Austin, TX. 2009-12-13 - 2009-12-16.
Vitenskapelig foredrag

Heegaard, Poul Einar; Trivedi, Kishor. (2009) Survivability Modeling with Stochastic Reward Nets. 2009 Winter Simulation Conference ; 2009-12-13 - 2009-12-16.
Vitenskapelig foredrag

Khan, Razib Hayat; Heegaard, Poul Einar. (2009) Translation from UML to Markov Model: A performance modeling framework. Int. Joint Conference on Computer, Information, and Systems Sciences, and Engineering (CISSE 2009) . University of Bridgeport; 2009-12-04 - 2009-12-12.
Vitenskapelig foredrag

Ofigsbø, Mona Holsve; Mjølsnes, Stig Frode; Heegaard, Poul Einar; Nilsen, Leif. (2009) Reducing the Cost of Certificate Revocation: A Case Study. EUROPKI'09 - Sixth European Workshop on Public Key Services, Applications and Infrastructures ; Pisa. 2009-09-10 - 2009-09-11.

2008

Vitenskapelig foredrag

Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2008) Adaptable Model-based Component Deployment Guided by Artificial Ants. 2nd International Conference on Autonomic Computing and Communication Systems . ICST, ACM; Turin. 2008-09-23 - 2008-09-25.
Vitenskapelig foredrag

Csorba, Mate Jozsef; Heegaard, Poul Einar; Herrmann, Peter. (2008) Cost-Efficient Deployment of Collaborative Components. 8th IFIP WG6.1 International Conference on Distributed Applications and Interoperable Systems (DAIS 2008) . René Meier, Sotirios Terzis; Oslo. 2008-06-04 - 2008-06-06.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2008) Network Survivability Quantification. Seminar . University of Bremen; Bremen. 2008-01-24 - 2008-01-24.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2008) Swarm Intelligence in Communication Networks. Seminar . University of Bremen; Bremen. 2008-01-24 - 2008-01-24.
Vitenskapelig foredrag

Heegaard, Poul Einar; Sandmann, Werner. (2008) Ant Colony Optimized Importance Sampling: Principles, Applications and Challenges. 7th International Workshop on Rare Event Simulation (RESIM 2008) . INRIA; Rennes. 2008-09-24 - 2008-09-26.

2007

Vitenskapelig foredrag

Heegaard, Poul Einar. (2007) Continuous-Time Markov Chains. Class 255 . Duke University; Durham, NC. 2007-11-27 - 2007-11-27.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2007) Empirical Observations of Traffic Patterns in Mobile and IP Telephony. 7th International Conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking (NEW2AN 2007). ; 2007-09-10 - 2007-09-14.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2007) Evolution of Traffic Patterns in Telecommunication Systems. ChinaCom - International Conference on Communications and Networking in China ; 2007-08-22 - 2007-08-24.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2007) Expectation. Class 255 . Duke University; Durham, NC. 2007-10-23 - 2007-10-23.
Vitenskapelig foredrag

Heegaard, Poul Einar; Sandmann, Werner. (2007) Ant-based Approach for Determining the Change of Measure in Importance Sampling. Winter Simulation Conference 2007 ; 2007-12-12 - 2007-12-14.
Vitenskapelig foredrag

Heegaard, Poul Einar; Sandmann, Werner. (2007) Efficient Estimation of Loss Rates in Optical Packet Switched Networks with Wavelength Conversion. Second International Conference on Systems and Networks Communications (ICSNC 2007) ; 2007-08-25 - 2007-08-31.
Vitenskapelig foredrag

Heegaard, Poul Einar; Sandmann, Werner. (2007) Evaluating Differentiated Quality of Service Parameters in Optical Packet Switching. 7th International Conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking (NEW2AN 2007). ; 2007-09-10 - 2007-09-14.
Vitenskapelig foredrag

Stray, Petter; Jelle, Thomas; Heegaard, Poul Einar. (2007) Field Test of Mobile Wi-Fi Terminals in a Wireless City. Norsk Informatikkonferanse (NIK 2007) ; Oslo. 2007-11-19 - 2007-11-21.

2006

Poster

Heegaard, Poul Einar; Fuglem, Ingebrigt. (2006) AntPing - prototype demonstrator of swarm based path management and monitoring. International Workshop on Self-Organizing Systems 2006 ; 2006-09-18 - 2006-09-20.
Vitenskapelig foredrag

Heegaard, Poul Einar; Wittner, Otto. (2006) Restoration performance vs. overhead in a swarm intelligence path management system. 5th International Workshop on Ant Colony Optiization and Swarm Intelligence (ANTS2006) ; Brussels. 2006-09-04 - 2006-09-07.
Vitenskapelig foredrag

Heegaard, Poul Einar; Wittner, Otto. (2006) Self-tuned refresh rate in a swarm intelligence path management system. The International EuroNGI Workshop on Self-Organizing Systems (IWSOS 2006) ; Passau. 2006-09-18 - 2006-09-20.
Vitenskapelig foredrag

Tjora, Åsmund; Skavhaug, Amund; Heegaard, Poul Einar. (2006) A Mathematical Model for Run-Time Distributions in a Fault Tolerant System with Nonhomogeneous Passive Replicas. DECOS/ERCIM Workshop on Dependable Embedded Systems . ERCIM; Gdansk. 2006-09-26 - 2006-09-26.

2005

Vitenskapelig foredrag

Heegaard, Poul Einar; Fuglem, Ingebrigt. (2005) Performance monitoring by swarm intelligence. Norwegian Network Research Seminar 2005 . SIMULA; Forenbu. 2005-10-27 - 2005-10-28.
Vitenskapelig foredrag

Heegaard, Poul Einar; Helvik, Bjarne Emil; Andreassen, Ragnar. (2005) Application of Rare Event Techniques to Trace Driven Simulation. Winter Simulation Conference 2005 . WSC Foundation INFORMS/IEEE/ACM; Orlando. 2005-12-04 - 2005-12-07.
Vitenskapelig foredrag

Paquereau, Laurent; Viken, Brynjar Åge; Heegaard, Poul Einar. (2005) Combining performance monitoring and location data in wireless networks. Norsk informatikkonferanse . NIK; Bergen. 2005-11-21 - 2005-11-23.

2004

Vitenskapelig foredrag

Heegaard, Poul Einar; Ryland, Jørgen. (2004) Single point passive measurements for estimation of two-way delay characteristics. 17th Nordic Teletraffic Seminar . Telenor; Fornebu. 2004-08-25 - 2004-08-27.
Vitenskapelig foredrag

Heegaard, Poul Einar; Wittner, Otto; Nicola, Victor; Helvik, Bjarne Emil. (2004) Distributed Asynchronous Algorithm for Cross-Entropy-Based Combinatorial Optimization. Rare Event Simulation and Combinatorial Optimization . University of Budapest; Budapest. 2004-09-07 - 2004-09-08.
Vitenskapelig foredrag

Heegaard, Poul Einar; Wittner, Otto; Nicola, Victor; Helvik, Bjarne Emil. (2004) Theory: Distributed Asynchronous Algorithm for Cross-Entropy-Based Combinatorial Optimization. Norwegian Network Research Seminar 2004 . Uninett, NTNU, Simula; Trondheim. 2004-10-21 - 2004-10-22.
Vitenskapelig foredrag

Hesby, Nina; Heegaard, Poul Einar; Wittner, Otto. (2004) Robust Connections in IP Networks Using Primary and Backup Path. 17th Nordic Teletraffic Seminar . Telnor; Fornebu, Oslo. 2004-08-25 - 2004-08-27.
Vitenskapelig foredrag

Mykkeltveit, Anders; Heegaard, Poul Einar; Wittner, Otto. (2004) Realization of a Distributed Route Management System on Software Routers. Norsk Informatikkonferanse 2004 . NIK-stiftelsen; Stavanger. 2004-11-29 - 2004-12-01.
Vitenskapelig foredrag

Heegaard, Poul Einar; Viken, Brynjar Åge. (2004) Performance evaluation of a low-cost network monitor. 17th Nordic Teletraffic Seminar . Telnor; Fornebu, Oslo. 2004-08-25 - 2004-08-27.

2003

Vitenskapelig foredrag

Heegaard, Poul Einar. (2003) IP-arkitektur. Uninett 2003 . [Mangler data]; Høgskolen i Agder. 2003-06-18.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2003) Measurement based traffic engineering. 21. NORDUnet Network Conference . [Mangler data]; Reykjavík, Iceland. 2003-08-27.
Vitenskapelig foredrag

Wittner, Otto; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2003) Scalable Distributed Discovery of Resource Paths in Telecommunication Networks using Cooperative Ant-like Agents. Congress on Evolutionary Computation (CEC2003) . [Mangler data]; Canberra, Australia.. 2003-12-12.
Vitenskapelig foredrag

Wittner, Otto; Heegaard, Poul Einar; Helvik, Bjarne Emil. (2003) Scalable Distributed Discovery of Resource Paths in Telecommunication Networks using Cooperative Ant-like Agents. 2003 IEEE Congress on Evolutionary Computation [CEC2003] ; Canberra. 2003-12-08 - 2003-12-12.

2002

Vitenskapelig foredrag

Heegaard, Poul Einar; Aarstad, Egil; Kjønsberg, Heidi; Østerbø, Olav. (2002) On the Statistical Behaviour of Competing TCP Connections in a Bottleneck Router. 16th Nordic Teletraffic Seminar . [Mangler data]; Espoo, Finland. 2002-08-23.
Vitenskapelig foredrag

Heegaard, Poul Einar; Viken, Brynjar Åge. (2002) Adaptive Active Measurements of the Performance at Bottlenecks in IP Based Networks. 16th Nordic Teletraffic Seminar . [Mangler data]; Espoo, Finland. 2002-08-23.

2001

Vitenskapelig foredrag

Røhne, Mette; Netland, Bjørn; Grgic, Irena; Pettersen, Harald; Heegaard, Poul Einar. (2001) Handling QoS in Full Service Networks. ConTEL 2001 - 6th International Conference on Telecommunications . [Mangler data]; Zagreb, Croatia. 2001-06-15.

2000

Vitenskapelig foredrag

Heegaard, Poul Einar. (2000) GenSyn - Java-based generator of synthetic Internet traffic. Uninett testnettseminar . [Mangler data]; Tromsø, 26 og 27 januar 2000.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2000) GenSyn - a Java-based generator of synthetic Internet traffic linking user behaviour models to real network protocols. ITC specialist seminar on IP traffic measurement, modeling and management . [Mangler data]; Monterey, CA, USA, September 18-20, 2000.
Vitenskapelig foredrag

Heegaard, Poul Einar. (2000) GenSyn - a generator of synthetic Internet traffic used in QoS experiments. NTS15 - Fifteenth Nordic Teletraffic Seminar . [Mangler data]; Lund, Sweden, August 22-24, 2000.

1999

Vitenskapelig foredrag

Heegaard, Poul Einar. (1999) Importance sampling - application to network simulation. 15th International Teletraffic Congress . [Mangler data]; Edinburgh, UK, 07.-11.06.1999.
Vitenskapelig foredrag

Heegaard, Poul Einar; Helvik, Bjarne Emil. (1999) On the use of likelihood ratio as indicator of the accuracy of importance sampling estimates. Second International Workshop on Rare Event Simulation (RESIM'99) . [Mangler data]; Twente, 11.-12. mars 1999.

1998

Vitenskapelig foredrag

Heegaard, Poul E.; Helvik, Bjarne Emil; Stol, Norvald. (1998) Genetic Algorithms for Dimensioning of Full Service Access Networks. Fourteenth Nordic Teletraffic Seminar (NTS 14) . [Mangler data]; Lyngby, Demark.

1997

Vitenskapelig foredrag

Heegaard, Poul Einar. (1997) A scheme for adaptive biasing in importance sampling. Workshop on Rare Event Simulation . [Mangler data]; Aachen.
Poster

Heegaard, Poul Einar. (1997) Efficient simulation of network performance. Winter Simulation Conference . [Mangler data]; Atlanta, Ga..
Vitenskapelig foredrag

Heegaard, Poul Einar. (1997) Efficient simulation of network performance by importance sampling. 15th International Teletraffic Congress . [Mangler data]; Washington, D.C..
Vitenskapelig foredrag

Heegaard, Poul Einar. (1997) Speedup simulation techniques (survey). Workshop on Rare Event Simulation . [Mangler data]; Aachen.

Språkvelger

Poul Einar Heegaard

Poul Einar Heegaard

Om

Courses

Research interests

Kompetanseord

Publikasjoner

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2002

2001

1999

1998

Tidsskriftspublikasjoner

Bøker

Del av bok/rapport

Rapport

Undervisning

Emner

Formidling

2018

2017

2016

2015

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997