Bjarne Emil Helvik
About
Academic degrees:
- 1975: Siv.ing. (MSc in Technology)
- 1982: Dr. Techn.
Work experience:
- 1975: Scientific assistant, NTH;
- 1981: Doctor research fellowship (NTNF);
- 1976 - 1997: Scientist, Head of Section, Senior Scientist, and Principal Research Scientist at ELAB, DELAB, SINTEF Telecom and Informatics;
- 1988 - 1997: Adjunct professor at the Department of Computer Engineering and Telematics (IDT), NTH;
- 1997 -2016: Professor, Department of Telematics, NTNU;
- 2003 - 2012: Principal investigator, Norwegian Centre of Excellence Q2S - the Centre for Quantifiable Quality of Service in Communication Systems;
- 2009 - 2017: Vice Dean of Research, IME-NTNU;
- 2017 - 2021: Professor, Department of Information Security and Communication Technology, NTNU
- 2020 - 2021: WP leader/PI, Centre for Research-based Innovation – Norwegian Center for Cybersecurity in Critical Sectors (NORCICS)
- 2022 - …: Professor Emeritus
Fields of interest
- Dependability modelling, analysis and simulation, analysis of operational data,
- Communication network dependability; design & management for resilience and survivability,
- Software reliability,
- Fault-tolerant systems,
- Combined security and dependability evaluation, probabilistic approaches in security,
- Architecture of ICT systems (Emphasis on dependability issues),
- QoS in communication networks and services.
Current research focuses on ensuring dependability in services provided by multi-domain, virtualised ICT systems. Primary applications are 5G (SDN, NFV, Slicing, ...), BlockChains and SmartGrids.
Excerpts of professional activities:
Editing:
- Computer communications, Special Issue on Reliable Network-based Services (RNS)
- Networks, Special Issue on Resilience of Communication Networks to Random Failures and Disasters
TPC chair:
- RNDM 2018 - International Workshop on Resilient Networks Design and Modeling
- Networking 2014,
- 9th International Workshop on Rare Event Simulation,
- DRCN11 International Conference on the Design of Reliable Communication Networks,
- EURO NGI 2007 (Euro-NGI Conference on Next Generation Internet Networks.)
Competencies
Research
Fields of interest and current research activities
- Dependability modelling, analysis and simulation, analysis of operational data.
- Communication network dependability; design & management for resilience and survivability,
- Combined security and dependability evaluation, probabilistic approaches in security,
- Architecture of networking/telecommunication systems (Emphasis on dependability issues),
- Software reliability,
- Fault-tolerant systems,
- QoS in communication networks and services,
- Multi-domain and -provider service level agreements (SLAs).
The current research focus is on ensuring the dependability of services provided by multi-domain, virtualised ICT systems. Primary applications are 5G and beyond (SDN, NFV, Slicing, ...), BlockChains and SmartGrids.
Publications
2023
-
Austad, Henrik;
Jellum, Erling Rennemo;
Hendseth, Sverre;
Mathisen, Geir;
Bryne, Torleiv Håland;
Gregertsen, Kristoffer Nyborg;
Albrektsen, Sigurd Mørkved;
Helvik, Bjarne Emil.
(2023)
Composable distributed real-time systems with deterministic network channels.
Journal of systems architecture.
volum 137.
Academic article
2022
-
Austad, Henrik;
Jellum, Erling Rennemo;
Hendseth, Sverre;
Mathisen, Geir;
Bryne, Torleiv Håland;
Gregertsen, Kristoffer Nyborg;
Albrektsen, Sigurd Mørkved;
Helvik, Bjarne Emil.
(2022)
Composable Distributed Real-Time Systems with Deterministic Network Channels.
SSRN Electronic Journal.
Academic article
-
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.
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2022)
Bitcoin P2P Network Measurements: A Testbed Study of the Effect of Peer Selection on Transaction Propagation and Confirmation Times.
IEEE Transactions on Network and Service Management.
volum 19 (4).
Academic article
2021
-
Garau, Michele;
Helvik, Bjarne Emil.
(2021)
Power Unavailability Reduction in Distribution Grid Fault Management with Entropy Minimization.
2021 5th International Conference on System Reliability and Safety (ICSRS).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2021)
An Analysis of Transaction Handling in Bitcoin.
2021 IEEE International Conference on Smart Data Services (SMDS 2021).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2021)
Effect of Miner Incentive on the Confirmation Time of Bitcoin Transactions.
Proceedings of the 2021 IEEE International Conference on Blockchain (Blockchain).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2021)
Transaction Characteristics of Bitcoin.
2021 IFIP/IEEE International Symposium on Integrated Network Management (IM).
Academic chapter/article/Conference paper
-
Tola, Besmir;
Jiang, Yuming;
Helvik, Bjarne Emil.
(2021)
Model-Driven Availability Assessment of the NFV-MANO with Software Rejuvenation.
IEEE Transactions on Network and Service Management.
volum 18 (3).
Academic article
2020
-
Gonzalez, Andres J.;
Ordonez-Lucena, Jose;
Helvik, Bjarne Emil;
Nencioni, Gianfranco;
Xie, Min;
Lopez, Diego R.;
Grønsund, Pål R..
(2020)
The Isolation Concept in the 5G Network Slicing.
2020 European Conference on Networks and Communications (EuCNC).
Academic chapter/article/Conference paper
-
Helvik, Bjarne Emil;
Vizarreta, Petra;
Heegaard, Poul Einar;
Trivedi, Kishor;
Mas Machuca, Carmen.
(2020)
Modelling of Software Failures.
Guide to Disaster-Resilient Communication Networks.
Chapter
-
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.
Chapter
-
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).
Academic article
-
Tola, Besmir;
Jiang, Yuming;
Helvik, Bjarne Emil.
(2020)
On the Resilience of the NFV-MANO: An Availability Model of a Cloud-native Architecture.
16th International Conference on the Design of Reliable Communication Networks DRCN 2020.
Academic chapter/article/Conference paper
-
Zerihun, Tesfaye Amare;
Garau, Michele;
Helvik, Bjarne Emil.
(2020)
Effect of Communication Failures on State Estimation of 5G-Enabled Smart Grid.
IEEE Access.
volum 8.
Academic article
2019
-
Amare, Tesfaye;
Adrah, Charles Mawutor;
Helvik, Bjarne Emil.
(2019)
A Method for Performability Study on Wide Area Communication Architectures for Smart Grid.
2019 7th International Conference on Smart Grid (icSmartGrid).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2019)
Suitability of Blockchains to Enable and Support Networking Functions: State of Art.
CCIOT 2019: Proceedings of the 2019 4th International Conference on Cloud Computing and Internet of Things.
Academic chapter/article/Conference paper
-
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.
Abstract
-
Tola, Besmir;
Nencioni, Gianfranco;
Helvik, Bjarne Emil.
(2019)
Network-Aware Availability Modeling of an End-to-End NFV-Enabled Service.
IEEE Transactions on Network and Service Management.
volum 16 (4).
Academic article
-
Tola, Besmir;
Nencioni, Gianfranco;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2019)
Modeling and Evaluating NFV-Enabled Network Services under Different Availability Modes.
2019 15th International Conference on the Design of Reliable Communication Networks (DRCN), 19-21 March 2019 in Coimbra, Portugal.
Academic chapter/article/Conference paper
-
Zerihun, Tesfaye Amare;
Garau, Michele;
Helvik, Bjarne Emil.
(2019)
Dependability Modeling and Analysis of 5G Based Monitoring System in Distribution Grids.
VALUETOOLS 2019 : Proceedings of the 12th EAI International Conference on Performance Evaluation Methodologies and Tools.
Academic chapter/article/Conference paper
-
Zerihun, Tesfaye Amare;
Helvik, Bjarne Emil.
(2019)
Dependability of Smart Distribution Grid Protection Using 5G.
2019 3rd International Conference on Smart Grid and Smart Cities (ICSGSC).
Academic chapter/article/Conference paper
2018
-
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).
Academic chapter/article/Conference paper
-
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).
Academic article
-
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).
Academic anthology/Conference proceedings
-
Nencioni, Gianfranco;
Garroppo, Rosario G.;
Gonzalez, Andres J.;
Helvik, Bjarne Emil;
Procissi, Gregorio.
(2018)
Orchestration and Control in Software-Defined 5G Networks: Research Challenges.
Wireless Communications & Mobile Computing.
volum 2018.
Academic literature review
-
Oostenbrink, Jorik;
Kuipers, Fernando;
Heegaard, Poul Einar;
Helvik, Bjarne Emil.
(2018)
Evaluating Local Disaster Recovery Strategies.
Performance Evaluation Review.
volum 46 (2).
Academic article
-
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).
Academic article
-
Zerihun, Tesfaye Amare;
Helvik, Bjarne Emil.
(2018)
Dependability Analysis of Smart Distribution Grid Architectures Considering Various Failure Modes.
2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
2017
-
Kamisiński, Andrzej;
Helvik, Bjarne Emil;
Gonzalez, Andres Javier;
Nencioni, Gianfranco.
(2017)
Assessing the risk of violating SLA dependability requirements in software-defined networks.
2017 IEEE Conference on Network Function Virtualization and Software-Defined Networking (NFV-SDN).
Academic chapter/article/Conference paper
-
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).
Academic article
-
Tola, Besmir;
Jiang, Yuming;
Helvik, Bjarne Emil.
(2017)
Failure Process Characteristics of Cloud-Enabled Services.
9th International Workshop on Resilient Netwrorks Design and Modeling.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
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].
Academic chapter/article/Conference paper
2016
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2016)
Maximizing the reliability of dual homed, critical services in wireless/cellular networks.
Optical Switching and Networkning Journal.
volum 19.
Academic article
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2016)
The cost for meeting SLA dependability requirements; implications for customers and providers.
Reliability Engineering & System Safety.
volum 145.
Academic article
-
Gonzalez, Andres Javier;
Nencioni, Gianfranco;
Helvik, Bjarne Emil;
Kamisinski, Andrzej.
(2016)
A Fault-Tolerant and Consistent SDN Controller.
2016 IEEE Global Communications Conference (GLOBECOM).
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
Nencioni, Gianfranco;
Helvik, Bjarne Emil;
Gonzalez, Andres Javier;
Heegaard, Poul Einar;
Kamisinski, Andrzej.
(2016)
Impact of SDN Controllers Deployment on Network Availability.
2016.
Report
2015
-
Gonzalez, Andres J.;
Helvik, Bjarne Emil;
Tiwari, Prakriti;
Becker, Denis;
Wittner, Otto J..
(2015)
GEARSHIFT: Guaranteeing availability requirements in SLAs using hybrid fault tolerance.
2015 IEEE Conference on Computer Communications (INFOCOM).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
2014
-
Abdelkefi, Atef;
Jiang, Yuming;
Helvik, Bjarne Emil;
Biczok, Gergely;
Calu, Alexander.
(2014)
Assessing the service quality of an Internet path through end-to-end measurement.
Computer Networks.
volum 70.
Academic article
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2014)
Using genetic algorithms to improve the reliability of dual homed wireless critical services.
Proceedings of RNDM 2014 6th International Workshop on Reliable Networks Design and Modeling.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2014)
The Positive Impact of Failures on Energy Efficient Virtual Machines Consolidation.
ICC 2014 - Proceedings of 2014 IEEE International Conference on Communications.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Fotiou, Nikos;
Helvik, Bjarne Emil;
Marias, Giannis F.;
Polyzos, George C..
(2014)
Analysis of the effect of InfoRanking on content pollution in peer-to-peer systems.
Security and Communication Networks.
volum 7 (4).
Academic article
2013
-
Cholda, Piotr;
Helvik, Bjarne Emil.
(2013)
Reliable Network-Based Services.
Computer Communications.
volum 36 (6).
Editorial
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2013)
Optimizing service continuity in a multi operator multi technology wireless environment.
Design of Reliable Communication Networks (DRCN), 2013 9th International Conference on the.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2013)
Reliability modelling of access point selection and handovers in heterogeneous wireless environments.
Design of Reliable Communication Networks (DRCN), 2013 9th International Conference on the.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2013)
Hybrid cloud management to comply efficiently with SLA availability guarantees.
12th Annual IEEE International Symposium on Network Computing and Applications, NCA 2013.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2013)
SLA success probability assessment in networks with correlated failures.
Computer Communications.
volum 36 (6).
Academic article
-
Myakotnykh, Eugene;
Wittner, Otto;
Helvik, Bjarne Emil;
Abdelkefi, Atef;
Helland, Jon Kåre;
Kvittem, Olav Arne;
Skjesol, Trond;
Øslebø, Arne.
(2013)
An Analysis of Interdomain Availability and Causes of Failures Based on Active Measurements.
Telecommunications Systems.
volum 52 (2).
Academic article
2012
-
Cholda, Piotr;
Følstad, Eirik Larsen;
Helvik, Bjarne Emil;
Kuusela, Pirkko;
Naldi, Maurizio;
Norros, Ilkka.
(2012)
Towards risk-aware communications networking.
Reliability Engineering & System Safety.
volum 109.
Academic literature review
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
A Study of the Interval Availability and its Impact on SLAs Risk.
Advances in Computer Science, Engineering & Applications.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
Characterization of Router and Link Failure Processes in UNINETT’s IP Backbone Network.
International Journal of Space-Based and Situated Computing (IJSSC).
volum 2 (1).
Academic article
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
Guaranteeing SLA Availability in Telecommunications Networks.
International Telecommunications Network Strategy and Planning Symposium.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
System Management to Comply with SLA Availability Guarantees in Cloud Computing.
IEEE International Conference on Cloud Computing Technology and Science (IEEE CloudCom 2012).
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2012)
Ant-based systems for wireless networks : retrospect and prospects.
Self-organizing systems : 6th International Workshop IWSOS 2012.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2012)
Modeling Push-Based Live P2P Streaming by Stochastic Activity Networks.
Communications in Computer and Information Science.
volum 294.
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2012)
Modeling Push-Based Live P2P Streaming by Stochastic Activity Networks.
Journal of Digital Information Management.
volum 10 (4).
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2012)
Towards green P2P: Analysis of energy consumption in P2P and approaches to control.
Proceedings of the 2012 International Conference on High Performance Computing and Simulation.
Academic chapter/article/Conference paper
2011
-
Cholda, Piotr;
Helvik, Bjarne Emil.
(2011)
Proceedings of the 2011 8th International Workshop on the Design of Reliable Communication Networks.
IEEE Press. 2011. ISBN 978-1-61284-125-0.
Academic anthology/Conference proceedings
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2011)
Failures and changes in cellular access networks; A study of field data.
Proceedings of the 2011 8th International Workshop on the Design of Reliable Communication Networks.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2011)
Analysis of Failures Characteristics in the UNINETT IP Backbone Network.
IEEE Workshops of International Conference on Advanced Information Networking and Applications (WAINA), 2011.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2011)
Guaranteeing Service Availability in SLAs on Networks with Non Independent Failures.
Proceedings of the 2011 8th International Workshop on the Design of Reliable Communication Networks.
Academic chapter/article/Conference paper
-
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Wittner, Otto.
(2011)
An Impact of Addressing Schemes on Routing Scalability.
Journal of Communications and Networks.
volum 13 (6).
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2011)
Ant-Based Multipath Routing for Wireless Mesh Networks.
Lecture Notes in Computer Science (LNCS).
volum 6625.
Academic article
-
Secci, Stefano;
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Rougier, Jean-Louis.
(2011)
Resilient Inter-Carrier Traffic Engineering for Internet Peering Interconnections.
IEEE Transactions on Network and Service Management.
volum 8 (4).
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2011)
Modeling and analysis of P2P content distribution under coordinated attack strategies.
Proceedings of Eighth Annual IEEE Consumer Communications and Networking Conference.
Academic chapter/article/Conference paper
2010
-
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Wittner, Otto.
(2010)
The Stability of Compact Routing in Dynamic Inter-Domain Networks.
2010 Third International Conference on Communication Theory, Reliability, and Quality of Service.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2010)
Determining dependencies in multi technology inter domain wireless access; A case study.
GLOBECOM Workshops (GC Wkshps), 2010 IEEE.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2010)
Dynamic Sharing Mechanism for Guaranteed Availability in MPLS Based Networks.
International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil;
Hellan, Jon K.;
Kuusela, Pirkko.
(2010)
Analysis of Dependencies Between Failures in the UNINETT IP Backbone Network.
IEEE Pacific Rim International Symposium on Dependable Computing, PRDC 2010.
Academic chapter/article/Conference paper
-
Gonzalez, Martinez Andres;
Helvik, Bjarne Emil.
(2010)
Guaranteeing Service Availability in SLAs; a Study of the Risk Associated with Contract Period and Failure Process.
IEEE Latin America Transactions.
volum 8 (4).
Academic article
-
Myakotnykh, Evgeniy;
Helvik, Bjarne Emil;
Hellan, Jon Kåre;
Kvittem, Olav Arne;
Skjesol, Trond;
Wittner, Otto;
Øslebø, Arne.
(2010)
Analyzing Causes of Failures in the Global Research Network Using Active Measurements.
Proceedings of the Second International Workshop on Reliable Networks Design and Modeling (RNDM 2010).
Academic chapter/article/Conference paper
-
Myakotnykh, Evgeniy;
Helvik, Bjarne Emil;
Wittner, Otto;
Kvittem, Olav;
Helland, Jon Kåre;
Skjesol, Trond;
Øslebø, Arne.
(2010)
Measurement and Analysis of End-to-end Dependability Characteristics in the Global Network.
18th International Workshop on Quality of Service (IWQoS), 2010.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2010)
Ensuring Fast Adaptation in an Ant-Based Path Management System.
Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.
volum 39.
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2010)
Opportunistic Ant-Based Path Management for Wireless Mesh Networks.
Lecture Notes in Computer Science (LNCS).
volum 6234.
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2010)
Modeling QoS in P2P File-sharing with Benign and Malicious Peers by Stochastic Activity Networks.
2010 7th IEEE Consumer Communications and Networking Conference.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2010)
Towards Green P2P: Understanding the Energy Consumption in P2P under Content Pollution.
Proceedings of 2010 IEEE/ACM International Conference on Green Computing and Communications (GreenCom 2010).
Academic chapter/article/Conference paper
2009
-
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Wittner, Otto.
(2009)
A compact routing scheme with lower stretch.
Proc International Conference on New Technologies, Mobility and Security.
Academic chapter/article/Conference paper
-
Ma, Huaiyuan;
Wittner, Otto;
Helvik, Bjarne Emil.
(2009)
A Stochastic Clustering Algorithm for Swarm Compact Routing.
Proc. of 2009 Next Generation Internet Networks.
Academic chapter/article/Conference paper
-
Cholda, Piotr;
Mykkeltveit, Anders;
Helvik, Bjarne Emil;
Jajszczyk, Andrzej.
(2009)
Continuity-based resilient communication.
Proceedings of the 2009 7th International Workshop on the Design of Reliable Communication Networks.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2009)
Managing availability in wireless inter domain access.
Proceedings of the International Conference on Ultra Modern Telecommunications.
Academic chapter/article/Conference paper
-
Gonzalez, Martinez Andres;
Helvik, Bjarne Emil.
(2009)
Guaranteeing Service Availability in SLAs; A Study of the Risk Associated with Contract Period and Failure Process.
2009 IEEE LATIN-AMERICAN CONFERENCE ON COMMUNICATIONS.
Academic chapter/article/Conference paper
-
Hachana, Safaà;
Montavont, Nicolas;
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2009)
Exploiting Alternative Paths in MHWNs: A Source-Based QoS Routing Approach.
Proceedings of the INFOCOM Workshops 2009, IEEE.
Academic chapter/article/Conference paper
-
Moe, Marie Elisabeth Gaup;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2009)
Comparison of the Beta and the Hidden Markov Models of Trust in Dynamic Environments.
Trust Management III.
Academic chapter/article/Conference paper
-
Moe, Marie Elisabeth Gaup;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2009)
Comparison of the Beta and the Hidden Markov Models of Trust in Dynamic Environments.
IFIP Advances in Information and Communication Technology.
Academic article
-
Myakotnykh, Eugene;
Helvik, Bjarne Emil.
(2009)
Analysis of Evolution Scenarios for End-to-end Quality of Services Provisioning in the Internet.
Proceedings of the International Conference on Ultra Modern Telecommunications.
Academic chapter/article/Conference paper
-
Mykkeltveit, Anders;
Helvik, Bjarne Emil.
(2009)
Adaptive management of connections to meet availability guarantees in SLAs.
Proceedings of the 2009 IFIP/IEEE International Symposium on Integrated Network Management.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2009)
Ensuring Fast Adaptation in an Ant-Based Path Management System.
Proceedings CD of the 4th International ICST Conference on Bio-Inspired Models of Network, Information, and Computing Systems.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2009)
Revisiting the Auto-Regressive Functions of the Cross-Entropy Ant System.
Lecture Notes in Computer Science (LNCS).
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2009)
Modeling reputation scheme in P2P file-sharing by stochastic activity networks.
The 8th IEEE International Conference on Dependable, Autonomic and Secure Computing : Chengdu, China, 12-14 December 2009.
Academic chapter/article/Conference paper
2008
-
Grosan, Crina;
Abraham, Ajith;
Helvik, Bjarne Emil.
(2008)
Building Multiobjective Resilient Networks.
Proceedings of UKSim - Tenth International Conference, University of Cambridge, UK.
Academic chapter/article/Conference paper
-
Heegaard, Poul Einar;
Helvik, Bjarne Emil;
Wittner, Otto Jonassen.
(2008)
The Cross Entropy Ant System for Network Path Management.
Telektronikk.
volum 104 (1).
Academic article
-
Meling, Hein;
Montresor, Alberto;
Helvik, Bjarne E.;
Babaoglu, Ozalp.
(2008)
Jgroup/ARM: a distributed object group platform with autonomous replication management.
Software, Practice & Experience.
volum 38 (9).
Academic article
-
Moe, Marie Elisabeth Gaup;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2008)
TSR: trust-based secure MANET routing using HMMs.
Proceedings of the 4th ACM symposium on QoS and security for wireless and mobile networks.
Academic chapter/article/Conference paper
-
Mykkeltveit, Anders;
Helvik, Bjarne Emil.
(2008)
Application of the RESTART/Splitting technique to network resilience studies in NS2.
Proceedings of the 19th IASTED International Conference on Modelling & Simulation.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2008)
Simulation of Wireless Multi-* Networks in NS-2.
Proceedings of the 3rd International Conference on Performance Evaluation Methodologies and Tools (ValueTools 2008).
Academic chapter/article/Conference paper
-
Meling, H;
Montresor, A;
Helvik, Bjarne Emil;
Babaoglu, O.
(2008)
Jgroup/ARM: a distributed object group platform with autonomous replication management.
Software, Practice & Experience.
volum 38.
Academic article
2007
-
Cholda, Piotr;
Mykkeltveit, Anders;
Helvik, Bjarne Emil;
Wittner, Otto Jonassen;
Jajszczyk, Andrzej.
(2007)
A Survey of Resilience Differentiation Frameworks in Communication Networks.
IEEE Communications Surveys and Tutorials.
volum 9 (4).
Academic article
-
Emstad, Peder Johannes;
Heegaard, Poul Einar;
Helvik, Bjarne Emil;
Paquereau, Laurent.
(2007)
Dependability and performance with discrete event simulation.
Tapir Akademisk Forlag. 2007.
Compendium
-
Emstad, Peder Johannes;
Helvik, Bjarne Emil;
Kure, Øivind.
(2007)
3rd EuroNGI Conference on Next Generation Internet Networks, Design and Engineering for Heterogeneity.
IEEE conference proceedings. 2007. ISBN 1-4244-0856-3.
Academic anthology/Conference proceedings
-
Helvik, Bjarne Emil;
Sallhammar, Karin;
Knapskog, Svein Johan.
(2007)
Integrated Dependability and Security Evaluation Using Game Theory and Markov Models.
Information Assurance : Dependability and Security in Networked Systems.
Academic chapter/article/Conference paper
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2007)
A Framework for Predicting Security and Dependability Measures in Real-time.
International Journal of Computer Science and Network Security.
volum 7 (3).
Academic article
2006
-
Li, Frank Y.;
Stol, Norvald;
Helvik, Bjarne E..
(2006)
Conformance Deterioration in QoS Networks: Phenomenon, Analysis and Elimination.
Computer Networks.
volum 50 (12).
Academic article
-
Gan, Qitao;
Helvik, Bjarne Emil.
(2006)
Dependability Modelling and Analysis of Networks as Taking Routing and Traffic into Account.
Proceedings of EuroNGI 2nd Conference on Next Generation Internet Design and Engineering on CD-ROM.
Academic chapter/article/Conference paper
-
Li, Frank;
Stol, Norvald;
Helvik, Bjarne Emil.
(2006)
Conformance deterioration in QoS networks: Phenomenon, analysis and elimination.
Computer Networks.
volum 50 (12).
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2006)
A Module-Based Wireless Node for ns-2.
Proceedings of the Workshop on ns-2: the IP network simulator.
Academic chapter/article/Conference paper
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2006)
On Stochastic Modeling for Integrated Security and Dependability Evaluation.
Journal of Networks.
volum 1 (5).
Academic article
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2006)
Towards a Stochastic Model for Integrated Security and Dependability Evaluation.
Proceedings of the First International Conference on Availability, Reliability and Security.
Other
2005
-
Andreassen, Ragnar;
Sudbø, Aasmund;
Bjørnstad, Steinar;
Helvik, Bjarne Emil;
Hodne, Erik;
Wikshaaland, Sigbjørn;
Zouganeli, Evi.
(2005)
Fault tolerance in a TWC/AWG based optical burst switching node architecture.
Proceedings of The 5th International Workshop on Design of Reliable Communication Networks (DRCN'5).
Academic chapter/article/Conference paper
-
Bjørnstad, Steinar;
Sudbø, Aasmund;
Andreassen, Ragnar;
Zouganelli, Evi;
Stol, Norvald;
Helvik, Bjarne Emil.
(2005)
Node redundancy in optical burst and packet switched networks.
Proceedings of the 7th International Conference on Transparent Optical networks (ICTON) in Barcelona, Vol. 1.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
Heegaard, Poul Einar;
Wittner, Otto;
Helvik, Bjarne Emil.
(2005)
Self-managed virtual path management in dynamic networks.
Lecture Notes in Computer Science (LNCS).
Academic article
-
Helvik, Bjarne E.;
Meling, Hein;
Montresor, Alberto.
(2005)
An approach to experimentally obtain service dependability characteristics of the Jgroup/ARM system.
Lecture Notes in Computer Science (LNCS).
volum 3463.
Academic article
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2005)
Incorporating Attacker Behavior in Stochastic Models of Security.
Proceedings of the 2005 International Conference on Security and Management.
Academic chapter/article/Conference paper
-
Sallhammar, Karin;
Knapskog, Svein Johan;
Helvik, Bjarne Emil.
(2005)
Building a Stochastic Model for Security and Trust Assessment Evaluation.
ERCIM News.
Academic article
-
Sallhammar, Karin;
Knapskog, Svein Johan;
Helvik, Bjarne Emil.
(2005)
Using Stochastic Game Theory to Compute the Expected Behavior of Attackers.
2005 Symposium on Applications and the Internet - SAINT 2005.
Academic chapter/article/Conference paper
-
Wittner, Otto;
Helvik, Bjarne Emil;
Nicola, Victor Fouad.
(2005)
Internet Failure Protection using Hamiltonian p-Cycles found by Ant-like Agents.
Proceedings of The 5th International Workshop on Design of Reliable Communication Networks (DRCN'5).
Academic chapter/article/Conference paper
-
Zouganeli, Evi;
Solheim, Astrid;
Kjølnesberg, Heidi;
Andreassen, Ragnar;
Feng, Boning;
Stol, Norvald;
Sudbø, Aasmund;
Helvik, Bjarne Emil.
(2005)
Techno-Economic Evaluation of Optical Packet/Burst Switching.
IEE Conferance publication.
Academic article
-
Andreassen, Ragnar;
Helvik, Bjarne Emil;
Sudbø, Aasmund;
Zouganeli, Evi.
(2005)
A study of fault tolerant architectures for electronic in- and egress interconnections in optical burst/packet switched networks.
IEEE Catalog Number: 05EX1006C.
Academic chapter/article/Conference paper
-
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.
Academic article
-
Helvik, Bjarne Emil;
Meling, Hein (ITEM - NTNU);
Montresor, Alberto.
(2005)
An approach to experimentally obtain service dependability characteristics of the Jgroup/ARM system.
Lecture Notes in Computer Science (LNCS).
volum 3463.
Academic article
-
Zouganeli, Evi;
Andreassen, Ragnar Ø;
Feng, Boning;
Solem, Astrid;
Stol, Norvald;
Kjønsberg, Heidi;
Sudbø, Aasmund;
Helvik, Bjarne E.;
Haugen, Rolf.
(2005)
Why bother with optical packets? An evaluation of the viability of optical packet/burst switching.
Telektronikk.
volum 101 (2).
Academic article
-
Zouganeli, Evi;
Andreassen, Ragnar;
Feng, Boning;
Solem, Astrid;
Stol, Norvald;
Kjønsberg, Heidi;
Sudbø, Aasmund Sveinung;
Helvik, Bjarne;
Haugen, Rolf B.
(2005)
Why bother with optical packets? An evaluation of the viability of optical packet/burst switching.
Telektronikk.
volum 101 (2).
Academic article
2004
-
Helvik, Bjarne E.;
Meling, Hein;
Montresor, Alberto.
(2004)
An Approach to Experimentally Obtain Service Dependability Characteristics of the Jgroup/ARM System.
2004. ISBN 8276442374.
Report
-
Helvik, Bjarne Emil.
(2004)
Perspectives on the Dependability of Networks and Services.
Telektronikk.
Academic article
-
Wittner, Otto;
Helvik, Bjarne Emil.
(2004)
Distributed Soft Policy Enforcement by Swarm Intelligence; Application to Loadsharing and Protection.
Annales des télécommunications.
volum 59 (1/2).
Academic article
Journal publications
-
Austad, Henrik;
Jellum, Erling Rennemo;
Hendseth, Sverre;
Mathisen, Geir;
Bryne, Torleiv Håland;
Gregertsen, Kristoffer Nyborg;
Albrektsen, Sigurd Mørkved;
Helvik, Bjarne Emil.
(2023)
Composable distributed real-time systems with deterministic network channels.
Journal of systems architecture.
volum 137.
Academic article
-
Austad, Henrik;
Jellum, Erling Rennemo;
Hendseth, Sverre;
Mathisen, Geir;
Bryne, Torleiv Håland;
Gregertsen, Kristoffer Nyborg;
Albrektsen, Sigurd Mørkved;
Helvik, Bjarne Emil.
(2022)
Composable Distributed Real-Time Systems with Deterministic Network Channels.
SSRN Electronic Journal.
Academic article
-
Gebraselase, Befekadu;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2022)
Bitcoin P2P Network Measurements: A Testbed Study of the Effect of Peer Selection on Transaction Propagation and Confirmation Times.
IEEE Transactions on Network and Service Management.
volum 19 (4).
Academic article
-
Tola, Besmir;
Jiang, Yuming;
Helvik, Bjarne Emil.
(2021)
Model-Driven Availability Assessment of the NFV-MANO with Software Rejuvenation.
IEEE Transactions on Network and Service Management.
volum 18 (3).
Academic article
-
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).
Academic article
-
Zerihun, Tesfaye Amare;
Garau, Michele;
Helvik, Bjarne Emil.
(2020)
Effect of Communication Failures on State Estimation of 5G-Enabled Smart Grid.
IEEE Access.
volum 8.
Academic article
-
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.
Abstract
-
Tola, Besmir;
Nencioni, Gianfranco;
Helvik, Bjarne Emil.
(2019)
Network-Aware Availability Modeling of an End-to-End NFV-Enabled Service.
IEEE Transactions on Network and Service Management.
volum 16 (4).
Academic article
-
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).
Academic article
-
Nencioni, Gianfranco;
Garroppo, Rosario G.;
Gonzalez, Andres J.;
Helvik, Bjarne Emil;
Procissi, Gregorio.
(2018)
Orchestration and Control in Software-Defined 5G Networks: Research Challenges.
Wireless Communications & Mobile Computing.
volum 2018.
Academic literature review
-
Oostenbrink, Jorik;
Kuipers, Fernando;
Heegaard, Poul Einar;
Helvik, Bjarne Emil.
(2018)
Evaluating Local Disaster Recovery Strategies.
Performance Evaluation Review.
volum 46 (2).
Academic article
-
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).
Academic article
-
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).
Academic article
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2016)
Maximizing the reliability of dual homed, critical services in wireless/cellular networks.
Optical Switching and Networkning Journal.
volum 19.
Academic article
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2016)
The cost for meeting SLA dependability requirements; implications for customers and providers.
Reliability Engineering & System Safety.
volum 145.
Academic article
-
Abdelkefi, Atef;
Jiang, Yuming;
Helvik, Bjarne Emil;
Biczok, Gergely;
Calu, Alexander.
(2014)
Assessing the service quality of an Internet path through end-to-end measurement.
Computer Networks.
volum 70.
Academic article
-
Zhang, Peiqing;
Fotiou, Nikos;
Helvik, Bjarne Emil;
Marias, Giannis F.;
Polyzos, George C..
(2014)
Analysis of the effect of InfoRanking on content pollution in peer-to-peer systems.
Security and Communication Networks.
volum 7 (4).
Academic article
-
Cholda, Piotr;
Helvik, Bjarne Emil.
(2013)
Reliable Network-Based Services.
Computer Communications.
volum 36 (6).
Editorial
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2013)
SLA success probability assessment in networks with correlated failures.
Computer Communications.
volum 36 (6).
Academic article
-
Myakotnykh, Eugene;
Wittner, Otto;
Helvik, Bjarne Emil;
Abdelkefi, Atef;
Helland, Jon Kåre;
Kvittem, Olav Arne;
Skjesol, Trond;
Øslebø, Arne.
(2013)
An Analysis of Interdomain Availability and Causes of Failures Based on Active Measurements.
Telecommunications Systems.
volum 52 (2).
Academic article
-
Cholda, Piotr;
Følstad, Eirik Larsen;
Helvik, Bjarne Emil;
Kuusela, Pirkko;
Naldi, Maurizio;
Norros, Ilkka.
(2012)
Towards risk-aware communications networking.
Reliability Engineering & System Safety.
volum 109.
Academic literature review
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
Characterization of Router and Link Failure Processes in UNINETT’s IP Backbone Network.
International Journal of Space-Based and Situated Computing (IJSSC).
volum 2 (1).
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2012)
Modeling Push-Based Live P2P Streaming by Stochastic Activity Networks.
Communications in Computer and Information Science.
volum 294.
Academic article
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2012)
Modeling Push-Based Live P2P Streaming by Stochastic Activity Networks.
Journal of Digital Information Management.
volum 10 (4).
Academic article
-
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Wittner, Otto.
(2011)
An Impact of Addressing Schemes on Routing Scalability.
Journal of Communications and Networks.
volum 13 (6).
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2011)
Ant-Based Multipath Routing for Wireless Mesh Networks.
Lecture Notes in Computer Science (LNCS).
volum 6625.
Academic article
-
Secci, Stefano;
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Rougier, Jean-Louis.
(2011)
Resilient Inter-Carrier Traffic Engineering for Internet Peering Interconnections.
IEEE Transactions on Network and Service Management.
volum 8 (4).
Academic article
-
Gonzalez, Martinez Andres;
Helvik, Bjarne Emil.
(2010)
Guaranteeing Service Availability in SLAs; a Study of the Risk Associated with Contract Period and Failure Process.
IEEE Latin America Transactions.
volum 8 (4).
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2010)
Ensuring Fast Adaptation in an Ant-Based Path Management System.
Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.
volum 39.
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2010)
Opportunistic Ant-Based Path Management for Wireless Mesh Networks.
Lecture Notes in Computer Science (LNCS).
volum 6234.
Academic article
-
Moe, Marie Elisabeth Gaup;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2009)
Comparison of the Beta and the Hidden Markov Models of Trust in Dynamic Environments.
IFIP Advances in Information and Communication Technology.
Academic article
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2009)
Revisiting the Auto-Regressive Functions of the Cross-Entropy Ant System.
Lecture Notes in Computer Science (LNCS).
Academic article
-
Heegaard, Poul Einar;
Helvik, Bjarne Emil;
Wittner, Otto Jonassen.
(2008)
The Cross Entropy Ant System for Network Path Management.
Telektronikk.
volum 104 (1).
Academic article
-
Meling, Hein;
Montresor, Alberto;
Helvik, Bjarne E.;
Babaoglu, Ozalp.
(2008)
Jgroup/ARM: a distributed object group platform with autonomous replication management.
Software, Practice & Experience.
volum 38 (9).
Academic article
-
Meling, H;
Montresor, A;
Helvik, Bjarne Emil;
Babaoglu, O.
(2008)
Jgroup/ARM: a distributed object group platform with autonomous replication management.
Software, Practice & Experience.
volum 38.
Academic article
-
Cholda, Piotr;
Mykkeltveit, Anders;
Helvik, Bjarne Emil;
Wittner, Otto Jonassen;
Jajszczyk, Andrzej.
(2007)
A Survey of Resilience Differentiation Frameworks in Communication Networks.
IEEE Communications Surveys and Tutorials.
volum 9 (4).
Academic article
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2007)
A Framework for Predicting Security and Dependability Measures in Real-time.
International Journal of Computer Science and Network Security.
volum 7 (3).
Academic article
-
Li, Frank Y.;
Stol, Norvald;
Helvik, Bjarne E..
(2006)
Conformance Deterioration in QoS Networks: Phenomenon, Analysis and Elimination.
Computer Networks.
volum 50 (12).
Academic article
-
Li, Frank;
Stol, Norvald;
Helvik, Bjarne Emil.
(2006)
Conformance deterioration in QoS networks: Phenomenon, analysis and elimination.
Computer Networks.
volum 50 (12).
Academic article
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2006)
On Stochastic Modeling for Integrated Security and Dependability Evaluation.
Journal of Networks.
volum 1 (5).
Academic article
-
Heegaard, Poul Einar;
Wittner, Otto;
Helvik, Bjarne Emil.
(2005)
Self-managed virtual path management in dynamic networks.
Lecture Notes in Computer Science (LNCS).
Academic article
-
Helvik, Bjarne E.;
Meling, Hein;
Montresor, Alberto.
(2005)
An approach to experimentally obtain service dependability characteristics of the Jgroup/ARM system.
Lecture Notes in Computer Science (LNCS).
volum 3463.
Academic article
-
Sallhammar, Karin;
Knapskog, Svein Johan;
Helvik, Bjarne Emil.
(2005)
Building a Stochastic Model for Security and Trust Assessment Evaluation.
ERCIM News.
Academic article
-
Zouganeli, Evi;
Solheim, Astrid;
Kjølnesberg, Heidi;
Andreassen, Ragnar;
Feng, Boning;
Stol, Norvald;
Sudbø, Aasmund;
Helvik, Bjarne Emil.
(2005)
Techno-Economic Evaluation of Optical Packet/Burst Switching.
IEE Conferance publication.
Academic article
-
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.
Academic article
-
Helvik, Bjarne Emil;
Meling, Hein (ITEM - NTNU);
Montresor, Alberto.
(2005)
An approach to experimentally obtain service dependability characteristics of the Jgroup/ARM system.
Lecture Notes in Computer Science (LNCS).
volum 3463.
Academic article
-
Zouganeli, Evi;
Andreassen, Ragnar Ø;
Feng, Boning;
Solem, Astrid;
Stol, Norvald;
Kjønsberg, Heidi;
Sudbø, Aasmund;
Helvik, Bjarne E.;
Haugen, Rolf.
(2005)
Why bother with optical packets? An evaluation of the viability of optical packet/burst switching.
Telektronikk.
volum 101 (2).
Academic article
-
Zouganeli, Evi;
Andreassen, Ragnar;
Feng, Boning;
Solem, Astrid;
Stol, Norvald;
Kjønsberg, Heidi;
Sudbø, Aasmund Sveinung;
Helvik, Bjarne;
Haugen, Rolf B.
(2005)
Why bother with optical packets? An evaluation of the viability of optical packet/burst switching.
Telektronikk.
volum 101 (2).
Academic article
-
Helvik, Bjarne Emil.
(2004)
Perspectives on the Dependability of Networks and Services.
Telektronikk.
Academic article
-
Wittner, Otto;
Helvik, Bjarne Emil.
(2004)
Distributed Soft Policy Enforcement by Swarm Intelligence; Application to Loadsharing and Protection.
Annales des télécommunications.
volum 59 (1/2).
Academic article
Books
-
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).
Academic anthology/Conference proceedings
-
Cholda, Piotr;
Helvik, Bjarne Emil.
(2011)
Proceedings of the 2011 8th International Workshop on the Design of Reliable Communication Networks.
IEEE Press. 2011. ISBN 978-1-61284-125-0.
Academic anthology/Conference proceedings
-
Emstad, Peder Johannes;
Helvik, Bjarne Emil;
Kure, Øivind.
(2007)
3rd EuroNGI Conference on Next Generation Internet Networks, Design and Engineering for Heterogeneity.
IEEE conference proceedings. 2007. ISBN 1-4244-0856-3.
Academic anthology/Conference proceedings
Part of book/report
-
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.
Academic chapter/article/Conference paper
-
Garau, Michele;
Helvik, Bjarne Emil.
(2021)
Power Unavailability Reduction in Distribution Grid Fault Management with Entropy Minimization.
2021 5th International Conference on System Reliability and Safety (ICSRS).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2021)
An Analysis of Transaction Handling in Bitcoin.
2021 IEEE International Conference on Smart Data Services (SMDS 2021).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2021)
Effect of Miner Incentive on the Confirmation Time of Bitcoin Transactions.
Proceedings of the 2021 IEEE International Conference on Blockchain (Blockchain).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2021)
Transaction Characteristics of Bitcoin.
2021 IFIP/IEEE International Symposium on Integrated Network Management (IM).
Academic chapter/article/Conference paper
-
Gonzalez, Andres J.;
Ordonez-Lucena, Jose;
Helvik, Bjarne Emil;
Nencioni, Gianfranco;
Xie, Min;
Lopez, Diego R.;
Grønsund, Pål R..
(2020)
The Isolation Concept in the 5G Network Slicing.
2020 European Conference on Networks and Communications (EuCNC).
Academic chapter/article/Conference paper
-
Helvik, Bjarne Emil;
Vizarreta, Petra;
Heegaard, Poul Einar;
Trivedi, Kishor;
Mas Machuca, Carmen.
(2020)
Modelling of Software Failures.
Guide to Disaster-Resilient Communication Networks.
Chapter
-
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.
Chapter
-
Tola, Besmir;
Jiang, Yuming;
Helvik, Bjarne Emil.
(2020)
On the Resilience of the NFV-MANO: An Availability Model of a Cloud-native Architecture.
16th International Conference on the Design of Reliable Communication Networks DRCN 2020.
Academic chapter/article/Conference paper
-
Amare, Tesfaye;
Adrah, Charles Mawutor;
Helvik, Bjarne Emil.
(2019)
A Method for Performability Study on Wide Area Communication Architectures for Smart Grid.
2019 7th International Conference on Smart Grid (icSmartGrid).
Academic chapter/article/Conference paper
-
Gebraselase, Befekadu Gezaheng;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2019)
Suitability of Blockchains to Enable and Support Networking Functions: State of Art.
CCIOT 2019: Proceedings of the 2019 4th International Conference on Cloud Computing and Internet of Things.
Academic chapter/article/Conference paper
-
Tola, Besmir;
Nencioni, Gianfranco;
Helvik, Bjarne Emil;
Jiang, Yuming.
(2019)
Modeling and Evaluating NFV-Enabled Network Services under Different Availability Modes.
2019 15th International Conference on the Design of Reliable Communication Networks (DRCN), 19-21 March 2019 in Coimbra, Portugal.
Academic chapter/article/Conference paper
-
Zerihun, Tesfaye Amare;
Garau, Michele;
Helvik, Bjarne Emil.
(2019)
Dependability Modeling and Analysis of 5G Based Monitoring System in Distribution Grids.
VALUETOOLS 2019 : Proceedings of the 12th EAI International Conference on Performance Evaluation Methodologies and Tools.
Academic chapter/article/Conference paper
-
Zerihun, Tesfaye Amare;
Helvik, Bjarne Emil.
(2019)
Dependability of Smart Distribution Grid Protection Using 5G.
2019 3rd International Conference on Smart Grid and Smart Cities (ICSGSC).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
Zerihun, Tesfaye Amare;
Helvik, Bjarne Emil.
(2018)
Dependability Analysis of Smart Distribution Grid Architectures Considering Various Failure Modes.
2018 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
Kamisiński, Andrzej;
Helvik, Bjarne Emil;
Gonzalez, Andres Javier;
Nencioni, Gianfranco.
(2017)
Assessing the risk of violating SLA dependability requirements in software-defined networks.
2017 IEEE Conference on Network Function Virtualization and Software-Defined Networking (NFV-SDN).
Academic chapter/article/Conference paper
-
Tola, Besmir;
Jiang, Yuming;
Helvik, Bjarne Emil.
(2017)
Failure Process Characteristics of Cloud-Enabled Services.
9th International Workshop on Resilient Netwrorks Design and Modeling.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
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].
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Nencioni, Gianfranco;
Helvik, Bjarne Emil;
Kamisinski, Andrzej.
(2016)
A Fault-Tolerant and Consistent SDN Controller.
2016 IEEE Global Communications Conference (GLOBECOM).
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
Gonzalez, Andres J.;
Helvik, Bjarne Emil;
Tiwari, Prakriti;
Becker, Denis;
Wittner, Otto J..
(2015)
GEARSHIFT: Guaranteeing availability requirements in SLAs using hybrid fault tolerance.
2015 IEEE Conference on Computer Communications (INFOCOM).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
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).
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2014)
Using genetic algorithms to improve the reliability of dual homed wireless critical services.
Proceedings of RNDM 2014 6th International Workshop on Reliable Networks Design and Modeling.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2014)
The Positive Impact of Failures on Energy Efficient Virtual Machines Consolidation.
ICC 2014 - Proceedings of 2014 IEEE International Conference on Communications.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2013)
Optimizing service continuity in a multi operator multi technology wireless environment.
Design of Reliable Communication Networks (DRCN), 2013 9th International Conference on the.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2013)
Reliability modelling of access point selection and handovers in heterogeneous wireless environments.
Design of Reliable Communication Networks (DRCN), 2013 9th International Conference on the.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2013)
Hybrid cloud management to comply efficiently with SLA availability guarantees.
12th Annual IEEE International Symposium on Network Computing and Applications, NCA 2013.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
A Study of the Interval Availability and its Impact on SLAs Risk.
Advances in Computer Science, Engineering & Applications.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
Guaranteeing SLA Availability in Telecommunications Networks.
International Telecommunications Network Strategy and Planning Symposium.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2012)
System Management to Comply with SLA Availability Guarantees in Cloud Computing.
IEEE International Conference on Cloud Computing Technology and Science (IEEE CloudCom 2012).
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2012)
Ant-based systems for wireless networks : retrospect and prospects.
Self-organizing systems : 6th International Workshop IWSOS 2012.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2012)
Towards green P2P: Analysis of energy consumption in P2P and approaches to control.
Proceedings of the 2012 International Conference on High Performance Computing and Simulation.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2011)
Failures and changes in cellular access networks; A study of field data.
Proceedings of the 2011 8th International Workshop on the Design of Reliable Communication Networks.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2011)
Analysis of Failures Characteristics in the UNINETT IP Backbone Network.
IEEE Workshops of International Conference on Advanced Information Networking and Applications (WAINA), 2011.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2011)
Guaranteeing Service Availability in SLAs on Networks with Non Independent Failures.
Proceedings of the 2011 8th International Workshop on the Design of Reliable Communication Networks.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2011)
Modeling and analysis of P2P content distribution under coordinated attack strategies.
Proceedings of Eighth Annual IEEE Consumer Communications and Networking Conference.
Academic chapter/article/Conference paper
-
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Wittner, Otto.
(2010)
The Stability of Compact Routing in Dynamic Inter-Domain Networks.
2010 Third International Conference on Communication Theory, Reliability, and Quality of Service.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2010)
Determining dependencies in multi technology inter domain wireless access; A case study.
GLOBECOM Workshops (GC Wkshps), 2010 IEEE.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil.
(2010)
Dynamic Sharing Mechanism for Guaranteed Availability in MPLS Based Networks.
International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010.
Academic chapter/article/Conference paper
-
Gonzalez, Andres Javier;
Helvik, Bjarne Emil;
Hellan, Jon K.;
Kuusela, Pirkko.
(2010)
Analysis of Dependencies Between Failures in the UNINETT IP Backbone Network.
IEEE Pacific Rim International Symposium on Dependable Computing, PRDC 2010.
Academic chapter/article/Conference paper
-
Myakotnykh, Evgeniy;
Helvik, Bjarne Emil;
Hellan, Jon Kåre;
Kvittem, Olav Arne;
Skjesol, Trond;
Wittner, Otto;
Øslebø, Arne.
(2010)
Analyzing Causes of Failures in the Global Research Network Using Active Measurements.
Proceedings of the Second International Workshop on Reliable Networks Design and Modeling (RNDM 2010).
Academic chapter/article/Conference paper
-
Myakotnykh, Evgeniy;
Helvik, Bjarne Emil;
Wittner, Otto;
Kvittem, Olav;
Helland, Jon Kåre;
Skjesol, Trond;
Øslebø, Arne.
(2010)
Measurement and Analysis of End-to-end Dependability Characteristics in the Global Network.
18th International Workshop on Quality of Service (IWQoS), 2010.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2010)
Modeling QoS in P2P File-sharing with Benign and Malicious Peers by Stochastic Activity Networks.
2010 7th IEEE Consumer Communications and Networking Conference.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2010)
Towards Green P2P: Understanding the Energy Consumption in P2P under Content Pollution.
Proceedings of 2010 IEEE/ACM International Conference on Green Computing and Communications (GreenCom 2010).
Academic chapter/article/Conference paper
-
Ma, Huaiyuan;
Helvik, Bjarne Emil;
Wittner, Otto.
(2009)
A compact routing scheme with lower stretch.
Proc International Conference on New Technologies, Mobility and Security.
Academic chapter/article/Conference paper
-
Ma, Huaiyuan;
Wittner, Otto;
Helvik, Bjarne Emil.
(2009)
A Stochastic Clustering Algorithm for Swarm Compact Routing.
Proc. of 2009 Next Generation Internet Networks.
Academic chapter/article/Conference paper
-
Cholda, Piotr;
Mykkeltveit, Anders;
Helvik, Bjarne Emil;
Jajszczyk, Andrzej.
(2009)
Continuity-based resilient communication.
Proceedings of the 2009 7th International Workshop on the Design of Reliable Communication Networks.
Academic chapter/article/Conference paper
-
Følstad, Eirik Larsen;
Helvik, Bjarne Emil.
(2009)
Managing availability in wireless inter domain access.
Proceedings of the International Conference on Ultra Modern Telecommunications.
Academic chapter/article/Conference paper
-
Gonzalez, Martinez Andres;
Helvik, Bjarne Emil.
(2009)
Guaranteeing Service Availability in SLAs; A Study of the Risk Associated with Contract Period and Failure Process.
2009 IEEE LATIN-AMERICAN CONFERENCE ON COMMUNICATIONS.
Academic chapter/article/Conference paper
-
Hachana, Safaà;
Montavont, Nicolas;
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2009)
Exploiting Alternative Paths in MHWNs: A Source-Based QoS Routing Approach.
Proceedings of the INFOCOM Workshops 2009, IEEE.
Academic chapter/article/Conference paper
-
Moe, Marie Elisabeth Gaup;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2009)
Comparison of the Beta and the Hidden Markov Models of Trust in Dynamic Environments.
Trust Management III.
Academic chapter/article/Conference paper
-
Myakotnykh, Eugene;
Helvik, Bjarne Emil.
(2009)
Analysis of Evolution Scenarios for End-to-end Quality of Services Provisioning in the Internet.
Proceedings of the International Conference on Ultra Modern Telecommunications.
Academic chapter/article/Conference paper
-
Mykkeltveit, Anders;
Helvik, Bjarne Emil.
(2009)
Adaptive management of connections to meet availability guarantees in SLAs.
Proceedings of the 2009 IFIP/IEEE International Symposium on Integrated Network Management.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2009)
Ensuring Fast Adaptation in an Ant-Based Path Management System.
Proceedings CD of the 4th International ICST Conference on Bio-Inspired Models of Network, Information, and Computing Systems.
Academic chapter/article/Conference paper
-
Zhang, Peiqing;
Helvik, Bjarne Emil.
(2009)
Modeling reputation scheme in P2P file-sharing by stochastic activity networks.
The 8th IEEE International Conference on Dependable, Autonomic and Secure Computing : Chengdu, China, 12-14 December 2009.
Academic chapter/article/Conference paper
-
Grosan, Crina;
Abraham, Ajith;
Helvik, Bjarne Emil.
(2008)
Building Multiobjective Resilient Networks.
Proceedings of UKSim - Tenth International Conference, University of Cambridge, UK.
Academic chapter/article/Conference paper
-
Moe, Marie Elisabeth Gaup;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2008)
TSR: trust-based secure MANET routing using HMMs.
Proceedings of the 4th ACM symposium on QoS and security for wireless and mobile networks.
Academic chapter/article/Conference paper
-
Mykkeltveit, Anders;
Helvik, Bjarne Emil.
(2008)
Application of the RESTART/Splitting technique to network resilience studies in NS2.
Proceedings of the 19th IASTED International Conference on Modelling & Simulation.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2008)
Simulation of Wireless Multi-* Networks in NS-2.
Proceedings of the 3rd International Conference on Performance Evaluation Methodologies and Tools (ValueTools 2008).
Academic chapter/article/Conference paper
-
Helvik, Bjarne Emil;
Sallhammar, Karin;
Knapskog, Svein Johan.
(2007)
Integrated Dependability and Security Evaluation Using Game Theory and Markov Models.
Information Assurance : Dependability and Security in Networked Systems.
Academic chapter/article/Conference paper
-
Gan, Qitao;
Helvik, Bjarne Emil.
(2006)
Dependability Modelling and Analysis of Networks as Taking Routing and Traffic into Account.
Proceedings of EuroNGI 2nd Conference on Next Generation Internet Design and Engineering on CD-ROM.
Academic chapter/article/Conference paper
-
Paquereau, Laurent;
Helvik, Bjarne Emil.
(2006)
A Module-Based Wireless Node for ns-2.
Proceedings of the Workshop on ns-2: the IP network simulator.
Academic chapter/article/Conference paper
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2006)
Towards a Stochastic Model for Integrated Security and Dependability Evaluation.
Proceedings of the First International Conference on Availability, Reliability and Security.
Other
-
Andreassen, Ragnar;
Sudbø, Aasmund;
Bjørnstad, Steinar;
Helvik, Bjarne Emil;
Hodne, Erik;
Wikshaaland, Sigbjørn;
Zouganeli, Evi.
(2005)
Fault tolerance in a TWC/AWG based optical burst switching node architecture.
Proceedings of The 5th International Workshop on Design of Reliable Communication Networks (DRCN'5).
Academic chapter/article/Conference paper
-
Bjørnstad, Steinar;
Sudbø, Aasmund;
Andreassen, Ragnar;
Zouganelli, Evi;
Stol, Norvald;
Helvik, Bjarne Emil.
(2005)
Node redundancy in optical burst and packet switched networks.
Proceedings of the 7th International Conference on Transparent Optical networks (ICTON) in Barcelona, Vol. 1.
Academic chapter/article/Conference paper
-
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.
Academic chapter/article/Conference paper
-
Sallhammar, Karin;
Helvik, Bjarne Emil;
Knapskog, Svein Johan.
(2005)
Incorporating Attacker Behavior in Stochastic Models of Security.
Proceedings of the 2005 International Conference on Security and Management.
Academic chapter/article/Conference paper
-
Sallhammar, Karin;
Knapskog, Svein Johan;
Helvik, Bjarne Emil.
(2005)
Using Stochastic Game Theory to Compute the Expected Behavior of Attackers.
2005 Symposium on Applications and the Internet - SAINT 2005.
Academic chapter/article/Conference paper
-
Wittner, Otto;
Helvik, Bjarne Emil;
Nicola, Victor Fouad.
(2005)
Internet Failure Protection using Hamiltonian p-Cycles found by Ant-like Agents.
Proceedings of The 5th International Workshop on Design of Reliable Communication Networks (DRCN'5).
Academic chapter/article/Conference paper
-
Andreassen, Ragnar;
Helvik, Bjarne Emil;
Sudbø, Aasmund;
Zouganeli, Evi.
(2005)
A study of fault tolerant architectures for electronic in- and egress interconnections in optical burst/packet switched networks.
IEEE Catalog Number: 05EX1006C.
Academic chapter/article/Conference paper
Report
-
Nencioni, Gianfranco;
Helvik, Bjarne Emil;
Gonzalez, Andres Javier;
Heegaard, Poul Einar;
Kamisinski, Andrzej.
(2016)
Impact of SDN Controllers Deployment on Network Availability.
2016.
Report
-
Emstad, Peder Johannes;
Heegaard, Poul Einar;
Helvik, Bjarne Emil;
Paquereau, Laurent.
(2007)
Dependability and performance with discrete event simulation.
Tapir Akademisk Forlag. 2007.
Compendium
-
Helvik, Bjarne E.;
Meling, Hein;
Montresor, Alberto.
(2004)
An Approach to Experimentally Obtain Service Dependability Characteristics of the Jgroup/ARM System.
2004. ISBN 8276442374.
Report
Media
2019
-
LectureHelvik, Bjarne Emil. (2019) Challenges with 5G Networks as a Base for Critical Infrastucture. Mobil Agenda; fagseminar: 5G sikkerhet . Mobil Agenda; Simula Research Laboratory, Oslo - Fornebu. 2019-06-13 - 2019-06-13.
2018
-
Academic lectureEsposito, 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.
2015
-
Academic lectureHelvik, Bjarne Emil. (2015) Keynote: Dependability of Non-engineered and Unmanaged System of Systems. 7th International Workshop on Reliable Networks Design and Modeling [RNDM 2015] . IFIP TC6, IEEE Com. Soc. and more; Münich. 2015-10-05 - 2015-10-05.
2014
-
Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2014) Using genetic algorithms to improve the reliability of dual homed wireless critical services. 6th International Workshop on Reliable Networks Design and Modeling [RNDM'14] ; Barcelona. 2014-11-17 - 2014-11-19.
-
Popular scientific lectureGonzales, Andres; Helvik, Bjarne Emil. (2014) Robust Telecommunication Services - As vital as water and electricity?. Telenor Research Breakfast Meeting . Telenor Research; Fornebu, Broadcasted to the Telenor Group word-wide. 2014-06-20 - 2014-06-20.
2013
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2013) Optimizing service continuity in a multi operator multi technology wireless environment. Design of Reliable Communication Networks (DRCN), 2013 9th International Conference ; Budapest. 2013-03-04 - 2013-03-07.
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2013) Reliability modelling of access point selection and handovers in heterogeneous wireless environments. Design of Reliable Communication Networks (DRCN), 2013 9th International Conference ; Budapest. 2013-03-04 - 2013-03-07.
2012
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2012) Finnes det garanti mot nedetid i dag og i fremtiden?. Digitale telenett - Teleforum på Kursdagene . Tekna; Trondheim. 2012-01-05 - 2012-01-06.
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Academic lectureZhang, Peiqing; Helvik, Bjarne Emil. (2012) Modeling Push-Based Live P2P Streaming by Stochastic Activity Networks. 4th International Conference on Networked Digital Technologies ; 2012-04-24 - 2012-04-26.
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Academic lectureZhang, Peiqing; Helvik, Bjarne Emil. (2012) Towards green P2P: Analysis of energy consumption in P2P and approaches to control. the 2012 International Conference on High Performance Computing and Simulation, HPCS 2012 ; 2012-07-02 - 2012-07-06.
2011
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2011) Dependability in mobile access networks. Workshop on Traffic Engineering and Dependability in the Network of the Future . NTNU/Q2S; Trondheim. 2011-06-21 - 2011-06-22.
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2011) Failures and changes in cellular access networks; A study of field data. Design of Reliable Netwokrs, 8th International Workshop ; Krakow. 2011-10-10 - 2011-10-12.
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Academic lectureGonzalez, Andres Javier; Helvik, Bjarne Emil. (2011) Analysis of Failures Characteristics in the UNINETT IP Backbone Network. IEEE Workshops of International Conference on Advanced Information Networking and Applications (WAINA), 2011 ; 2011-03-22 - 2011-03-25.
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Academic lectureGonzalez, Andres Javier; Helvik, Bjarne Emil. (2011) Stochastic Optimization for Allocate Connections under SLAs Guarantees. Workshop on Traffic Engineering and Dependability in the Network of the Future . NTNU; Trondheum. 2011-06-20 - 2011-06-21.
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Academic lectureZhang, Peiqing; Helvik, Bjarne Emil. (2011) Modeling and analysis of P2P content distribution under coordinated attack strategies. IEEE Consumer Communications and Networking Conference [CCNC 2011]; . IEEE Communication Society; Las Vegas, NV. 2011-01-08 - 2011-01-11.
2010
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Academic lectureSecci, Stefano; Ma, Huaiyuan; Helvik, Bjarne Emil; Rougier, Jean-Louis. (2010) A Resilient Routing Policy for Peering Management. GLOBECOM 2010 ; 2010-12-06 - 2010-12-10.
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2010) Determining dependencies in multi technology inter domain wireless access; A case study. Globecom - Workshop on Mobile Computing and Emerging Communication Networks. . Globecom; Miami. 2010-12-10 - 2010-12-10.
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Academic lectureGonzalez, Andres Javier; Helvik, Bjarne Emil. (2010) Analysis of Dependencies Between Failures in the UNINETT IP Backbone Network. IEEE Pacific Rim International Symposium on Dependable Computing, PRDC 2010 ; 2010-12-13 - 2010-12-15.
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Academic lectureGonzalez, Andres Javier; Helvik, Bjarne Emil. (2010) Correlation Between Failure Events and Geographical Distance in the UNINETT IP Backbone Network. Euro-NF workshop IA.7.3 . Euro-NF; 2010-04-15 - 2010-04-16.
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Academic lectureGonzalez, Andres Javier; Helvik, Bjarne Emil. (2010) Dynamic Sharing Mechanism for Guaranteed Availability in MPLS Based Networks. IEEE International Workshop Technical Committee on Communications Quality and Reliability, CQR 2010 ; 2010-06-08 - 2010-06-10.
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Academic lectureMyakotnykh, Evgeniy; Helvik, Bjarne Emil. (2010) Measurement and Analysis of End-to-end Dependability Characteristics in the Global Network. 18th International Workshop on Quality of Service (IWQoS), 2010 ; Beijing. 2010-06-16 - 2010-06-18.
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Academic lectureMyakotnykh, Evgeniy; Helvik, Bjarne Emil; Hellan, Jon Kåre. (2010) Measurement and Analysis of End-to-end Dependability Characteristics in the Global Network. Euro-NF Workshop on Traffic Engineering and Dependability in the Network of the Future . Euro-NF; Warsaw. 2010-04-15 - 2010-04-16.
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Academic lectureZhang, Peiqing; Helvik, Bjarne Emil. (2010) Modeling QoS in P2P File-sharing with Benign and Malicious Peers by Stochastic Activity Networks. 7th IEEE Consumer Communications and Networking Conference ; Las Vegas. 2010-01-09 - 2010-01-12.
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Academic lectureZhang, Peiqing; Helvik, Bjarne Emil. (2010) Towards Green P2P: Understanding the Energy Consumption in P2P under Content Pollution. 2010 IEEE/ACM International Conference on Green Computing and Communications (GreenCom 2010); EaCN-2010/GreenCom ; 2010-12-18 - 2010-12-20.
2009
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Academic lectureFølstad, Eirik Larsen; Helvik, Bjarne Emil. (2009) Managing availability in wireless inter domain access. Ultra Modern Telecommunications & Workshops, 2009. ICUMT '09. International Conference on ; 2009-10-13 - 2009-10-14.
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Academic lectureHelvik, Bjarne Emil. (2009) Differentiated dependability in one network?. NTVA Technology Forum 2009 . NTVA - Norges Tekniske Vitenskapsakademi; Trondheim. 2009-09-09 - 2009-09-09.
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Academic lectureMoe, Marie Elisabeth Gaup; Helvik, Bjarne Emil; Knapskog, Svein Johan. (2009) Comparison of the Beta and the Hidden Markov Models of Trust in Dynamic Environments. Third IFIP WG 11.11 International Conference, IFIPTM 2009 ; West Lafayette, IN. 2009-06-15 - 2009-06-19.
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2009) Adaptive management of connections to meet availability guarantees in SLAs. IM 2009 Mini-conference . IEEE/IFIP; Hofstra University, Long Island, New York. 2009-06-01 - 2009-06-05.
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Academic lectureZhang, Peiqing; Helvik, Bjarne Emil. (2009) Modeling Reputation Scheme in P2P File-sharing by Stochastic Activity Networks. The 8th IEEE International Conference on Dependable, Autonomic and Secure Computing ; Chengdu. 2009-12-12 - 2009-12-14.
2008
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2008) Comparison of Schemes for Provision of Differentiated Availability-guaranteed Services Using Dedicated Protection. Seventh International Conference on Networking (ICN) . IARIA; Cancun. 2008-04-13 - 2008-04-18.
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2008) On Provision of Availability Guarantees Using Shared Protection. 12th Conference on Optical Network Design and Modelling (ONDM) . IFIP; Vilanova la Geltru. 2008-03-12 - 2008-03-14.
2007
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Academic lectureGrosan, Crina; Abraham, Ajith; Helvik, Bjarne Emil. (2007) Multiobjective Evolutionary Algorithms for Sceduling Jobs on Computational Grids. International Conference, Applied Computing 2007 ; 2007-02-18 - 2007-02-20.
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2007) On provision of guaranteed availability using dedicated protection. EuroFGI Workshop on Traffic Engineering, Protection and Restoration for FGI . EuroFGI / Telenor; Fornebu/Oslo. 2007-09-27 - 2007-10-27.
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2007) Provision of connection-specific availability guarantees in communication networks. 6th International Workshop on Design of Reliable Communication Networks (DRCN 2007) ; La Rochelle. 2007-10-07 - 2007-10-10.
2006
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Academic lectureGan, Qitao; Helvik, Bjarne Emil. (2006) Dependability Modelling and Analysis of Networks as Taking Routing and Traffic into Account. 2nd EURO-NGI Conference on Next Generation Internet Design and Engineering ; Valencia. 2006-04-03 - 2006-04-05.
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Academic lectureGan, Qitao; Helvik, Bjarne Emil; Wittner, Otto Jonassen. (2006) A Hybrid Modelling Approach for Analyzing Service Availability with Shared Path Protection in IP Networks. 10th International Conference on Communication Technology ; Guilin. 2006-11-27 - 2006-11-30.
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Academic lectureGan, Qitao; Helvik, Bjarne Emil; Wittner, Otto Jonassen. (2006) Refined Classification of Service Unavailability for Comparison: Shared Path Protection vs. Rerouting. 10th International Conference on Communication Technology ; Guilin. 2006-11-27 - 2006-11-30.
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Academic lectureHelvik, Bjarne Emil. (2006) Swarm-based routing to achieve dependable networks. Dependability of all-IP networks; A multi-disciplinary workshop . VTT; Espoo (Helsinki). 2006-05-18 - 2006-05-19.
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InterviewHelvik, Bjarne Emil. (2006) Tele og dataproblemer St Olav Hospital; Kan vi stole på tele og datasystemer? [Ordskifte - Aktalitetsprogram NRK1-Trøndelag]. Trondheim [Radio]. 2006-06-20.
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2006) Application of the RESTART/Splitting Technique in Object-Oriented Simulation. 6th International Workshop on Rare Event Simulation . University of Bamberg; Bamberg. 2006-10-08 - 2006-10-10.
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Academic lectureMykkeltveit, Anders; Helvik, Bjarne Emil. (2006) Prospects for dependability differentiation in interdomain networks. EuroNGI Workshop on Traffic Engineering, Protection and Restoration for NGI . EuroNGI/AGH University of Science and Technology; Krakow. 2006-05-04 - 2006-05-05.
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Academic lectureSallhammar, Karin; Helvik, Bjarne Emil; Knapskog, Svein Johan. (2006) A Game-theoretic Approach to Stochastic Security and Dependability Evaluation. The 2nd IEEE International Symposium on Dependable, Autonomic and Secure Computing (DASC'06) ; Indiana. 2006-09-29 - 2006-10-01.
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Academic lectureZouganeli, Evi, Paraskevi; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Stol, Norvald; Sudbø, Aasmund Sveinung; Kjønsberg, Heidi; Helvik, Bjarne; Bjørnstad, Steinar; Haugen, Rolf B. (2006) Optical packets or electrical packets? An assessment of the viability of optical packet/burst switching. Northern Optics 2006 . Norsk Fysisk Selskap; Radisson SAS Hotel Norge, Bergen. 2006-06-14 - 2006-06-16.
2005
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Academic lectureAndreassen, Ragnar; Sudbø, Aasmund Sveinung; Bjørnstad, Steinar; Helvik, Bjarne; Hodne, E; Wikshåland, S; Zouganeli, Evi. (2005) Fault tolerance in a TWC/AWG based optical burst switching node architecture. 5th International Workshop on Design of Reliable Communication Networks (DRCN2005) . Telecom Lab Italia; Napoli. 2005-10-16 - 2005-10-19.
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Academic lectureBjørnstad, Steinar; Sudbø, Aasmund Sveinung; Andreassen, Ragnar; Zouganeli, Evi; Stol, Norvald; Helvik, Bjarne. (2005) Node redundancy in optical burst and packet switched networks. COST 291 workshop on “Issues and Challenges in Optical Networking . COST 291; Barcelona. 2005-06-03 - 2005-06-06.
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Academic lectureCholda, Piotr; Jajszczyk, Andrzej; Helvik, Bjarne Emil; Mykkeltveit, Anders. (2005) Service Differentiation Based on Recovery Methods. EURO NGI Workshop on Traffic Engineering, Protection and Restoration ; Roma. 2005-04-21 - 2005-04-23.
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Academic lectureGan, Qitao; Helvik, Bjarne Emil. (2005) Limiting the State Space Explosion as Taking Dynamic Issues into Account in Network Modelling and Analysis. The second Norwegian Network Research Seminar . UiO, Simula Research Laboratory; Fornebu. 2005-10-27 - 2005-10-28.
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Academic lectureHeegaard, 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.
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Academic lectureHelvik, Bjarne E.; Meling, Hein; Montresor, Alberto. (2005) An approach to experimentally obtain service dependability characteristics of the Jgroup/ARM system. Dependable Computing - EDCC 2005: 5th European Dependable Computing Conference ; Budapest, Hungary. 2005-04-20 - 2005-04-22.
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Academic lectureHelvik, Bjarne Emil; Meling, Hein; Montresor, Alberto. (2005) An approach to experimentally obtain service dependability characteristics of the Jgroup/ARM system. In European Dependable Computing Conference (EDCC-5).Springer Verlag. ; Budapest. 2005-04-20 - 2005-04-22.
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Academic lectureSallhammar, Karin; Helvik, Bjarne Emil; Knapskog, Svein Johan. (2005) Incorporating Attacker Behavior in Stochastic Models of Security. Proceedings of the 2005 International Conference on Security and Management (SAM'05) ; Las Vegas. 2005-06-20 - 2005-06-22.
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Academic lectureSallhammar, Karin; Knapskog, Svein Johan; Helvik, Bjarne Emil. (2005) Using Stochastic Game Theory to Compute the Expected Behavior of Attackers. The International Symposium on Applications and the Internet (SAINT 2005) Workshops ; Trento. 2005-02-01 - 2005-02-03.
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Academic lectureWittner, Otto; Helvik, Bjarne Emil; Nicola, Victor Fouad. (2005) Internet Failure Protection using Hamiltonian p-Cycles found by Ant-like Agents. The 5th International Workshop on Design of Reliable Communication Networks (DRCN2005) ; Island of Ischia. 2005-10-16 - 2005-10-18.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Solem, Astrid; Helvik, Bjarne Emil; Sudbø, Aasmund; Haugen, Rolf B.. (2005) Optical packets, circuits, or packets and circuits: Viablility of optical packet/burst switching. The 10th OptoElectronics and Communications Conference (OECC 2005) ; Seoul. 2005-07-04 - 2005-07-08.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Solem, Astrid; Helvik, Bjarne; Sudbø, Aasmund Sveinung; Haugen, Rolf B. (2005) Optical packets, circuits, or packets and circuits: Viability of optical packet/burst switching. Opto-electronics and Communications Conference (OECC 2005) . Optical Society of Korea; Seoul. 2005-07-04 - 2005-07-08.
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Academic lectureAndreassen, Ragnar; Helvik, Bjarne Emil; Sudbø, Aasmund; Zouganeli, Evi. (2005) A study of fault tolerant architectures for electronic in- and egress interconnections in optical burst/packet switched networks. 9th Conference on Optical Network Design and Modelling (ONDM 2005) ; Milano. 2005-02-07 - 2005-02-09.
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Academic lectureAndreassen, Ragnar; Helvik, Bjarne; Sudbø, Aasmund Sveinung; Zouganeli, Evi, Paraskevi. (2005) A Study of Fault Tolerant Architectures for Electronic In- and Egress Interconnections in Optical Burst/Packet Switched Networks. Ninth Conference on Optical Network Design and Modelling (ONDM) . Politecnico di Milano; Milano. 2005-02-07 - 2005-02-09.
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Academic lectureAndreassen, Ragnar; Sudbø, Aasmund; Bjørnstad, Steinar; Helvik, Bjarne Emil; Hodne, Erik; Wikshaaland, Sigbjørn; Zouganeli, Evi. (2005) Fault tolerance in a TWC/AWG based optical burst switching node architecture. The 5th International Workshop on Design of Reliable Communication Networks (DRCN'5) ; Napoli. 2005-10-16 - 2005-10-19.
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Academic lectureBjørnstad, Steinar; Sudbø, Aasmund; Andreassen, Ragnar; Zouganeli, Evi; Stol, Norvald; Helvik, Bjarne Emil. (2005) Node redundancy in optical burst and packet switched networks. 7th International Conference on Transparent Optical Networks (ICTON 2005) ; Barcelona. 2005-07-03 - 2005-07-07.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Stol, Norvald; Sudbø, Aasmund Sveinung; Kjønsberg, Heidi; Bjørnstad, Steinar; Helvik, Bjarne; Haugen, Rolf B. (2005) Results from IST STOLAS: Optical packet/ burst switched networks using tunable lasers – design, architectures and attainable performance. Norwegian Network Research Seminar (NNRS2005) . Uninett; Fornebu. 2005-10-27 - 2005-10-28.
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Academic lectureZouganeli, Evi; Solem, Astrid; Kjønsberg, Heidi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Sudbø, Aasmund Sveinung; Helvik, Bjarne; Haugen, Rolf B. (2005) Techno-Economic Evaluation of Optical Packet/ Burst Switching. European Conference on Optical Communication (ECOC 2005) . IEE; Glasgow. 2005-09-25 - 2005-09-29.
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Academic lectureZouganeli, Evi; Solheim, Astrid; Kjønsberg, Heidi; Andreassen, Ragnar; Feng, Boning; Stol, Norvald; Sudbø, Aasmund; Helvik, Bjarne Emil. (2005) Techno-Economic Evaluation of Optical Packet/Burst Switching. 31st European Conference on Optical Communication [ECOC 2005] ; Glasgow. 2005-09-25 - 2005-09-29.
2004
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Academic lectureAagesen, Finn Arve; Anutariya, Chutiporn; Shiaa, Mazen Malek; Helvik, Bjarne Emil; Supadulchai, Paramai. (2004) A Dynamic Configuration Architecture. IEEE/IFIP Network Operations and Management Symposium NOMS'2004 . IEEE/IFIP; Seoul. 2004-04-01 - 2004-04-03.
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Academic lectureAndreassen, Ragnar; Helvik, Bjarne Emil. (2004) A note on traffic performance gain for optical burst/packet switching. 8th IFIP Working Conference on Optical Network Design and Modelling (ONDM 2004) . IFIP; Ghent. 2004-04-02 - 2004-04-04.
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Academic lectureAndreassen, Ragnar; Stol, Norvald; Zouganeli, Evi; Haugen, Rolf B; Helvik, Bjarne; Emstad, Peder; Sudbø, Aasmund Sveinung; Solem, Astrid; Feng, Boning. (2004) Application Dependent Performance of a Mesh Optical Burst Switched Network and Effect of Burst Size. European Conference on Optical Communication (ECOC 2003) and International Conference on Integrated Optics and Optical Fiber Communication (IOOC 2003) . AEI, IIC, Telecom Italia; Rimini. 2004-09-21 - 2004-09-25.
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Academic lectureFeng, Boning; Stol, Norvald; Zouganeli, Evi; Andreassen, Ragnar; Solem, Astrid; Haugen, Rolf B; Sudbø, Aasmund Sveinung; Helvik, Bjarne. (2004) Direct Comparison between Optical Circuit and Optical Packet/Burst Switching Using Simulations. Opto-electronics and Communications Conference and International Conference on Optical Internet (OECC/COIN 2004) ; Yokohama. 2004-07-12 - 2004-07-16.
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Academic lectureHeegaard, 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.
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Academic lectureHeegaard, 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.
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Academic lectureHelvik, Bjarne Emil; Andreassen, Ragnar. (2004) Fault Tolerance in Optical Networks; A study of electronic in- and egress interconnections in Torus topologies. Seventeenth Nordic Teletraffic Seminar, Fornebu, Norway ; Fornebu. 2004-08-25 - 2004-08-27.
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Academic lectureMeling, Hein; Helvik, Bjarne E.. (2004) Performance Consequences of Inconsistent Client-side Membership Information in the Open Group Model. The 23rd IEEE International Performance, Computing and Communications Conference ; Phoenix, Arizona, USA. 2004-04-15 - 2004-04-15.
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Academic lectureMeling, Hein; Helvik, Bjarne Emil. (2004) Performance Consequences of Inconsistent Client-side Membership Information in the Open Group Model. Proceedings of the 23rd IEEE International Performance, Computing and Communications Conference (IPCCC) . IEEE; Phoenix, Arizona. 2004-04-01 - 2004-04-03.
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Academic lectureWittner, Otto; Helvik, Bjarne Emil; Nicola, Victor Fouad. (2004) Link and Node Protection using Hamiltonian p-Cycles found by Ant-like Agents. In online proc. of Workshop on Traffic Engineering, Protection and Restoration for NGI . Lund University; Lund. 2004-05-27 - 2004-05-28.
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Academic lectureZouganeli, Evi; Stol, Norvald; Andreassen, Ragnar; Feng, Boning; Solem, Astrid; Haugen, Rolf B; Sudbø, Aasmund Sveinung; Helvik, Bjarne. (2004) Optical packet/burst switched networks using tunable lasers: Architectures, Migration and Viability. Norwegian Electrooptics Meeting . Optikk- og akustikkgruppa i Norsk Fysisk Selskap; Tønsberg. 2004-05-02 - 2004-05-04.
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Academic lectureFeng, Boning; Stol, Norvald; Zouganeli, Evi; Andreassen, Ragnar Ø.; Solem, Astrid; Haugen, Rolf B.; Sudbø, Aasmund; Helvik, Bjarne Emil. (2004) Direct comparison between optical circuit and optical packet / burst switching using simulations. OptoElectronics and Communications Conference/International Conference on Optical Internet (OECC/COIN2004) ; Yokohama. 2004-07-12 - 2004-07-16.
2003
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Academic lectureAagesen, Finn Arve; Helvik, Bjarne Emil; Anutariya, Chutiporn. (2003) On Adaptable Networking. The First International Conference on Information and Communication Technologies, ICT'2003 . Assumption University Thailand; 2003-04-01 - 2003-04-03.
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Academic lectureAagesen, Finn Arve; Helvik, Bjarne Emil; Chutiporn, Anutariya; Shiaa, Mazen Malek. (2003) On Adaptable Networking. The 2003 International Conference on Information and Communication Technologies (ICT 2003) . [Mangler data]; Bangkok, Thailand. 2003-04-10.
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Academic lectureWittner, 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.
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Academic lectureWittner, 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.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar; Haugen, Rolf B; Solem, Astrid; Feng, Boning; Sudbø, Aasmund Sveinung; Stol, Norvald; Helvik, Bjarne; Emstad, Peder. (2003) Performance evaluation of a mesh optical burst switched network with tunable lasers and tunable wavelength converters. 7th Conference on Telecommunication (ConTEL) . University of Croatia, IEEE Croatia; Zagreb. 2003-06-11 - 2004-06-13.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar; Sudbø, Aasmund Sveinung; Peder, Emstad; Helvik, Bjarne; Stol, Norvald; Haugen, Rolf B. (2003) Stacked Label Optical Burst Switched Networks using Tunable Lasers: Prospects, Viability and Architectures. Conference on Optical Network Design and Modelling (ONDM 2003 . International Federation of Information Processing; Budapest. 2003-02-03 - 2003-02-03.
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Academic lectureAndreassen, Ragnar Ø.; Stol, Norvald; Zouganeli, Evi; Haugen, Rolf B.; Helvik, Bjarne Emil; Emstad, Peder Johannes; Sudbø, Aasmund; Solem, Astrid; Feng, Boning. (2003) Application Dependent Performance of a Mesh Optical Burst Switched Network and Effect of Burst Size. 29th European Conference on Optical Communication (ECOC 2003) . [Mangler data]; Rimini, Italy. 2003-09-25.
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Academic lectureAndreassen, Ragnar Ø.; Stol, Norvald; Zouganeli, Evi; Haugen, Rolf B.; Helvik, Bjarne Emil; Emstad, Peder Johannes; Sudbø, Aasmund; Solem, Astrid; Feng, Boning. (2003) Application Dependent Performance of a Mesh Optical Burst Switched Network and Effect of Burst Size. ECOC 2003 ; Rimini. 2003-09-21 - 2003-09-25.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar Ø.; Haugen, Rolf B.; Solem, Astrid; Feng, Boning; Sudbø, Aasmund; Stol, Norvald; Helvik, Bjarne Emil; Emstad, Peder Johannes. (2003) Performance evaluation of a meshed optical burst switched network with tunable lasers and tunable wavelength converters. 7th International Conference on Telecommunications ; Zabreb. 2003-06-11 - 2003-06-13.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar Ø.; Sudbø, Aasmund; Emstad, Peder Johannes; Helvik, Bjarne Emil; Stol, Norvald; Haugen, Rolf B.. (2003) Stacked Label Optical Burst Switched Networks using Tunable Lasers: Prospects, Viability and Architectures. 7th IFIP Working Conference on Optical Network Design & Modelling (ONDM 2003) . [Mangler data]; Budapest, Hungary. 2003-02-05.
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Academic lectureZouganeli, Evi; Andreassen, Ragnar Ø.; Sudbø, Aasmund; Emstad, Peder Johannes; Helvik, Bjarne Emil; Stol, Norvald; Haugen, Rolf B.. (2003) Stacked Label Optical Burst Switched Networks using Tunable Lasers: Prospects, Viability and Architectures. The 7th IFIP Working Conference on Optical Network Design & Modelling (ONDM 2003) ; Budapest. 2003-02-03 - 2003-02-05.
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Academic lectureZouganeli, Evi; Stol, Norvald; Andreassen, Ragnar Ø.; Helvik, Bjarne Emil; Haugen, Rolf B.; Emstad, Peder Johannes; Solem, Astrid; Feng, Boning; Sudbø, Aasmund. (2003) Performance evaluation of a mesh optical burst switched network with tunable lasers and tunable wavelength converters. 7th International Conference on Telecommunications . [Mangler data]; Zagreb, Croatia. 2003-06-13.
2002
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Academic lectureAagesen, Finn Arve; Chutiporn, Anutariya; Shiaa, Mazen Malek; Helvik, Bjarne Emil. (2002) Support Specification and Selection in TAPAS. EUNICE'2002 . [Mangler data]; Trondheim, Norway. 2002-09-04.
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PosterAagesen, Finn Arve; Helvik, Bjarne Emil; Anutariya, Chutiporn. (2002) Towards Dynamic Composition of Adaptive Systems. Euroweb 2002 Conference: The Web and the GRID: From E-Science to E-Business . [Mangler data]; Oxford, England. 2002-12-15.
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Academic lectureWittner, Otto; Helvik, Bjarne Emil. (2002) Cross Entropy Guided Ant-like Agents Finding Dependable Primary/Backup Path Patterns in Networks. Congress on Evolutionary Computation (CEC2002) . [Mangler data]; Honolulu, Hawaii, US. 2002-05-17.
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Academic lectureWittner, Otto; Helvik, Bjarne Emil. (2002) Cross-Entropy Guided Ant-like Agents Finding Cyclic Paths in Scarcely Meshed Networks. Third International Workshop on Ant Algorithms, ANTS'2002 . [Mangler data]; Brussels, Belgium. 2002-09-14.
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Academic lectureWittner, Otto; Helvik, Bjarne Emil. (2002) Robust Implementation of Policies Using Ant-like Agents. The Network Control and Engineering for QoS, Security and Mobility with focus on Policy-based Networking IFIP and IEEE Conference, Net-Con'2002 . [Mangler data]; Paris, France. 2002-10-25.
2001
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Academic lectureHelvik, Bjarne Emil; Wittner, Otto. (2001) Using the Cross-Entropy Method to Guide/Govern Mobile Agent's Path Finding in Networks. 3rd International Workshop on Mobile Agents for Telecommunication Applications - MATA'01 . [Mangler data]; Montréal, Canada. 2001-08-16.
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Academic lectureMeling, Hein; Helvik, Bjarne Emil. (2001) ARM: Autonomous Replication Management in Jgroup. 4th European Research Seminar on Advances in Distributed Systems (ERSADS) . [Mangler data]; Bertinoro, 14-18 May 2001.
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Academic lectureAagesen, Finn Arve; Helvik, Bjarne Emil; Johansen, Ulrik Albert; Meling, Hein. (2001) Plug and Play for Telecommunication Functionality - Architecture and Demonstration Issues. IConIT'2001 - The 2001 International Conference on Information Technology for the New Millenium . [Mangler data]; Bangkok, Thailand. 2001-05-30.
2000
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PosterWittner, Otto; Helvik, Bjarne Emil. (2000) Simulating mobile agent based network management using network simulator. Second International Symposium on Agent Systems and Applications and Fourth International Symposium on Mobile Agents (ASA/MA 2000) . [Mangler data]; Zürich.
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PosterWittner, Otto; Helvik, Bjarne Emil; Hölper, C.J.E.. (2000) Failure semantics of mobile agent systems involved in network fault management. 2000 IEEE/IFIP Network Operations and Management Symposium . [Mangler data]; 10-14. apr 2000, Honolulu, Hawaii, USA.
1999
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Academic lectureHeegaard, 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.
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Academic lectureHelvik, Bjarne Emil. (1999) Dependability issues in smart networks. IFIP TC6 WG6.7 Fifth International Conference on Intelligence in Networks (SMARTNET '99) . [Mangler data]; Pathumthani, Thailand, 22.-26. november 1999.
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Academic lectureWittner, Otto; Hölper, Carsten; Helvik, Bjarne Emil. (1999) Failure semantics of mobile agent systems involved in network fault management. Norsk Informatikkonferanse '99 (NIK'99) . [Mangler data]; Trondheim, 16.-17. november 1999.
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Academic lectureAagesen, Finn Arve; Helvik, Bjarne Emil; Meling, Hein; Johansen, Ulrik Albert. (1999) Plug and play for telecommunications - architecture and demonstration issues. Norsk informatikkonferanse '99 (NIK'99) . [Mangler data]; Trondheim, 16.-17. november 1999. 1999-11-10 - 1999-11-17.
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Academic lectureAagesen, Finn Arve; Helvik, Bjarne Emil; Wuwongse, Vilas; Meling, Hein; Bræk, Rolv; Johansen, Ulrik Albert. (1999) Towards a plug and play architecture for telecommunications. IFIP TC6 WG6.7 Fifth International Conference on Intelligence in Networks (SMARTNET '99) . [Mangler data]; Pathumthani, Thailand, 22.-26. november 1999. 1999-11-22 - 1999-11-26.
1998
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Academic lectureHeegaard, 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.
1996
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Popular scientific lectureHelvik, Bjarne Emil. (1996) Laboratory masurements of ATM traffic handling. Norsk teleforum . [Mangler data]; Loen.
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Popular scientific lectureHelvik, Bjarne Emil. (1996) Risikofaktorer ved den teknologiske utvikling innen informasjons og kommunikasjons teknologi. Seminar "Informasjonsteknologi og sårbarhet" . [Mangler data]; Trondheim.
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Academic lectureHelvik, Bjarne Emil; Stol, Norvald. (1996) QoS differentiation in ATM networks : a case study. [Mangler data] . [Mangler data]; Trondheim.