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  3. Håvard D. Johansen
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Department of Computer Science havard.johansen@uit.no +4777646738 +47 91110987 Tromsø REALF A 261

Håvard D. Johansen

Professor

Job description

Håvard D. Johansen teaches and researches computer security and privacy topics. His work in overlay networks received great acclaim in the research community providing a completely different way of approaching the problem of Byzantine fault tolerance. Johansen is currently focused on secure remote execution of code using Intel SGX, reactive information-flow policies, and energy-efficient blockchains based on Byzantine consensus. Johansen is a hands-on full-stack software developer. He has up-to-date expertise with modern software technologies like GO, TypeScript, iOS/Android platforms, and Docker. Dr. Johansen has also competence in machine learning, and interdisciplinary experiences in the medical, sports, and psychology domains.

  • Randine, Pietro; Sharma, Aakash; Hartvigsen, Gunnar; Johansen, Håvard D.; Årsand, Eirik. Information and communication technology-based interventions for chronic diseases consultation: Scoping review. International Journal of Medical Informatics 2022. ISSN 1386-5056.s doi: 10.1016/j.ijmedinf.2022.104784.
  • Tedeschi, Enrico; Nordmo, Tor-Arne Schmidt; Johansen, Dag; Johansen, Håvard D.. On Optimizing Transaction Fees in Bitcoin using AI: Investigation on Miners Inclusion Pattern. ACM Transactions on Internet Technology 2022. ISSN 1533-5399.s doi: https://doi.org/10.1145/3528669.
  • Sharma, Aakash; Bye Nilsen, Thomas; Johansen, Sivert; Johansen, Dag; Johansen, Håvard D.. Designing a Service for Compliant Sharing of Sensitive Research Data. Lecture Notes in Computer Science (LNCS) 2022. ISSN 0302-9743.s doi: 10.1007/978-3-031-02067-4_10.
  • Tedeschi, Enrico; Nordmo, Tor-Arne Schmidt; Johansen, Dag; Johansen, Håvard D.. On Optimizing Transaction Fees in Bitcoin using AI: Investigation on Miners Inclusion Pattern. ACM Transactions on Internet Technology 2022. ISSN 1533-5399.s doi: 10.1145/3528669.
  • Jha, Debesh; Yazidi, Anis; Riegler, Michael Alexander; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. LightLayers: Parameter Efficient Dense and Convolutional Layers for Image Classification. Springer Nature 2021; Volum 12606 ISBN 9783030692445. ISSN 0302-9743.s doi: 10.1007/978-3-030-69244-5.
  • Jha, Debesh; Smedsrud, Pia; Johansen, Dag; de Lange, Thomas; Johansen, Håvard D.; Halvorsen, Pål; Riegler, Michael Alexander. A Comprehensive Study on Colorectal Polyp Segmentation with ResUNet++, Conditional Random Field and Test-Time Augmentation. IEEE journal of biomedical and health informatics 2021. ISSN 2168-2194.s doi: 10.1109/JBHI.2021.3049304.
  • Sharma, Aakash; Nilsen, Thomas Bye; Czerwinska, Katja Pauline; Onitiu, Daria; Brenna, Lars; Johansen, Dag; Johansen, Håvard D.. Up-to-the-Minute Privacy Policies via Gossips in Participatory Epidemiological Studies. Frontiers in Big Data 2021; Volum 4. ISSN 2624-909X.s doi: 10.3389/fdata.2021.624424.
  • Jha, Debesh; Ali, Sharib; Hicks, Steven; Thambawita, Vajira L B; Borgli, Hanna; Smedsrud, Pia; de Lange, Thomas; Pogorelov, Konstantin; Wang, Xiaowei; Harzig, Philipp; Tran, Minh-Triet; Meng, Wenhua; Hoang, Trung-Hieu; Dias, Danielle; Ko, Tobey H.; Agrawal, Taruna; Ostroukhova, Olga; Khan, Zeshan; Tahir, Muhammed Atif; Liu, Yang; Chang, Yuan; Kirkerød, Mathias; Johansen, Dag; Lux, Mathias; Johansen, Håvard D.; Riegler, Michael; Halvorsen, Pål. A comprehensive analysis of classification methods in gastrointestinal endoscopy imaging. Medical Image Analysis 2021; Volum 70. ISSN 1361-8415.s doi: 10.1016/j.media.2021.102007.
  • Thambawita, Vajira L B; Hicks, Steven; Isaksen, Jonas L; Stensen, Mette H.; Haugen, Trine B.; Kanters, Jørgen K; Parasa, Sravanthi; Lange, Thomas de; Johansen, Håvard D.; Johansen, Dag; Hammer, Hugo Lewi; Halvorsen, Pål; Riegler, Michael. DeepSynthBody: the beginning of the end for data deficiency in medicine. IEEE conference proceedings 2021 ISBN 978-1-7281-5934-8.s 1 - 8.s doi: 10.1109/ICAPAI49758.2021.9462062.
  • Jha, Debesh; Ali, Sharib; Tomar, Nikhil Kumar; Johansen, Håvard D.; Johansen, Dag; Rittscher, Jens; Riegler, Michael; Halvorsen, Pål. Real-Time Polyp Detection, Localization and Segmentation in Colonoscopy Using Deep Learning. IEEE Access 2021; Volum 9. ISSN 2169-3536.s 40496 - 40510.s doi: 10.1109/ACCESS.2021.3063716.
  • Nordmo, Tor-Arne Schmidt; Ovesen, Aril Bernhard; Johansen, Håvard D.; Riegler, Michael Alexander; Halvorsen, Pål; Johansen, Dag. Dutkat: A Multimedia System for Catching Illegal Catchers in a Privacy-Preserving Manner. ACM Digital Library 2021 ISBN 978-1-4503-8529-9.s 57 - 61.s doi: 10.1145/3463944.3469102.
  • Ovesen, Aril Bernhard; Nordmo, Tor-Arne Schmidt; Johansen, Håvard D.; Riegler, Michael Alexander; Halvorsen, Pål; Johansen, Dag. File system support for privacy-preserving analysis and forensics in low-bandwidth edge environments. Information 2021; Volum 12 (10). ISSN 2078-2489.s 1 - 19.s doi: 10.3390/info12100430.
  • Jha, Debesh; Ali, Sharib; Tomar, Nikhil Kumar; Riegler, Michael Alexander; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. Exploring Deep Learning Methods for Real-Time Surgical Instrument Segmentation in Laparoscopy. IEEE 2021 ISBN 9781665403580. ISSN 2641-3604.s doi: 10.1109/BHI50953.2021.
  • Tomar, Nikhil Kumar; Jha, Debesh; Ali, Sharib; Johansen, Håvard D.; Johansen, Dag; Riegler, Michael; Halvorsen, Pål. DDANet: Dual Decoder Attention Network for Automatic Polyp Segmentation. Springer Nature 2021; Volum 12668 (12668) ISBN 978-3-030-68793-9. ISSN 0302-9743.s 307 - 314.s doi: 10.1007/978-3-030-68793-9_23.
  • Jha, Debesh; Ali, Sharib; Emanuelsen, Krister; Hicks, Steven; Thambawita, Vajira L B; Garcia-Ceja, Enrique; Riegler, Michael; de Lange, Thomas; Schmidt, Peter T; Johansen, Håvard D.; Johansen, Dag; Halvorsen, Pål. Kvasir-Instrument: Diagnostic and Therapeutic Tool Segmentation Dataset in Gastrointestinal Endoscopy. Springer 2021; Volum 12573 (*) ISBN 978-3-030-67834-0. ISSN 0302-9743.s 218 - 229.s doi: 10.1007/978-3-030-67835-7_19.
  • Srivastava, Abhishek; Jha, Debesh; Chanda, Sukalpa; Pal, Umapada; Johansen, Håvard D.; Johansen, Dag; Riegler, Michael; Ali, Sharib; Halvorsen, Pål. MSRF-Net: A Multi-Scale Residual Fusion Network for Biomedical Image Segmentation. IEEE journal of biomedical and health informatics 2021. ISSN 2168-2194.s doi: 10.1109/JBHI.2021.3138024.
  • Jha, Debesh; Hicks, Steven; Emanuelsen, Krister; Johansen, Håvard D.; Johansen, Dag; de Lange, Thomas; Riegler, Michael; Halvorsen, Pål. Medico Multimedia Task at MediaEval 2020: Automatic Polyp Segmentation. 2020 ISBN 0000000000000.
  • Jha, Debesh; Smedsrud, Pia; Riegler, Michael; Halvorsen, Pål; de Lange, Thomas; Johansen, Dag; Johansen, Håvard D.. Kvasir-SEG: A segmented polyp dataset. Lecture Notes in Computer Science (LNCS) 2020; Volum 11962 LNCS. ISSN 0302-9743.s 451 - 462.s doi: 10.1007/978-3-030-37734-2_37.
  • Pettersen, Svein Arne; Johansen, Håvard D.; Matias Do Vale Baptista, Ivan Andre; Halvorsen, Pål; Johansen, Dag. Quantified Soccer Using Positional Data: A Case Study. (fulltekst) Frontiers 2020 ISBN 978-2-88963-4620.s 264 - 269.s doi: 10.3389/978-2-88963-462-0.
  • Sharma, Aakash; Czerwinska, Katja P; Brenna, Lars; Johansen, Dag; Johansen, Håvard D.. Privacy Perceptions and Concerns in Image-Based Dietary Assessment Systems: Questionnaire-Based Study. JMIR Human Factors 2020; Volum 7 (4). ISSN 2292-9495.s doi: 10.2196/19085.
  • Johansen, Håvard D.; Johansen, Dag; Kupka, Tomas; Riegler, Michael; Halvorsen, Pål. Scalable Infrastructure for Efficient Real-Time Sports Analytics. Association for Computing Machinery (ACM) 2020 ISBN 978-1-4503-8002-7.s 230 - 234.s doi: https://doi.org/10.1145/3395035.3425300.
  • Jha, Debesh; Riegler, Michael Alexander; Johansen, Dag; Halvorsen, Pål; Johansen, Håvard D.. DoubleU-Net: A Deep Convolutional Neural Network for Medical Image Segmentation. IEEE International Symposium on Computer-Based Medical Systems 2020. ISSN 2372-9198.s doi: 10.1109/CBMS49503.2020.00111.
  • Lasantha Bandara Thambawita, Vajira; Jha, Debesh; Hammer, Hugo Lewi; Johansen, Håvard D.; Johansen, Dag; Halvorsen, Pål; Riegler, Michael. An extensive study on cross-dataset bias and evaluation metrics interpretation for machine learning applied to gastrointestinal tract abnormality classification. ACM Transactions on Computing for Healthcare (HEALTH) 2020; Volum 1:17 (3). ISSN 2691-1957.s 1 - 29.s doi: 10.1145/3386295.
  • Lasantha Bandara Thambawita, Vajira; Hicks, Steven; Borglia, Hanna; Stensland, Håkon Kvale; Jha, Debesh; Svensen, Martin Kristoffer; Pettersen, Svein Arne; Johansen, Dag; Johansen, Håvard D.; Pettersen, Susann Dahl; Nordvang, Simon; Pedersen, Sigurd; Gjerdrum, Anders Tungeland; Grønli, Tor-Morten; Fredriksen, Per Morten; Eg, Ragnhild; Hansen, Kjeld S.; Fagernes, Siri; Claudi-Nielsen, Christine; Biørn-Hansen, Andreas; Dang Nguyen, Duc Tien; Kupka, Tomas; Hammer, Hugo Lewi; Jain, Ramesh; Riegler, Michael; Halvorsen, Pål. PMData: a sports logging dataset. Association for Computing Machinery (ACM) 2020 ISBN 978-1-4503-6845-2.s 231 - 236.s doi: 10.1145/3339825.3394926.
  • Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Brenna, Lars; Johansen, Dag. Diggi: A Secure Framework for Hosting Native Cloud Functions with Minimal Trust. IEEE 2019 ISBN 978-1-7281-6741-1.s 18 - 27.s doi: 10.1109/TPS-ISA48467.2019.00012.
  • Jha, Debesh; Smedsrud, Pia; Riegler, Michael; Johansen, Dag; de Lange, Thomas; Halvorsen, Pål; Johansen, Håvard D.. ResUNet++: An Advanced Architecture for Medical Image Segmentation. (data) IEEE 2019 ISBN 978-1-7281-5606-4.s 225 - 230.s doi: 10.1109/ISM46123.2019.00049.
  • Tedeschi, Enrico; Nordmo, Tor-Arne Schmidt; Johansen, Dag; Johansen, Håvard D.. Predicting Transaction Latency with Deep Learning in Proof-of-Work Blockchains. (data) IEEE International Conference on Big Data and Smart Computing 2019. ISSN 2375-9356.s doi: 10.1109/BigData47090.2019.9006228.
  • Wiik, Theodor; Johansen, Håvard D.; Pettersen, Svein Arne; Matias Do Vale Baptista, Ivan Andre; Kupka, Tomas; Johansen, Dag; Riegler, Michael; Halvorsen, Pål. Predicting peek readiness-to-train of soccer players using long short-term memory recurrent neural networks. (fulltekst) IEEE conference proceedings 2019 (12) ISBN 978-1-7281-4673-7. ISSN 1949-3991.s doi: 10.1109/CBMI.2019.8877406.
  • Andreassen, Kim Hartvedt; Johansen, Dag; Johansen, Håvard D.; Matias Do Vale Baptista, Ivan Andre; Pettersen, Svein Arne; Riegler, Micheal; Halvorsen, Pål. Real-time Analysis of Physical Performance Parameters in Elite Soccer. IEEE conference proceedings 2019 (12) ISBN 978-1-7281-4673-7. ISSN 1949-3991.s doi: 10.1109/CBMI.2019.8877422.
  • Holmlund, Terje Bektesevic; Foltz, Peter W.; Cohen, Alex S.; Johansen, Håvard D.; Sigurdsen, Randi; Fugeli, Pål; Bergsager, Dagfinn; Cheng, Jian; Bernstein, Jared; Rosenfeld, Elizabeth; Elvevåg, Brita. Moving psychological assessment out of the controlled laboratory setting: Practical challenges. Psychological Assessment 2019; Volum 31 (3). ISSN 1040-3590.s 292 - 303.s doi: 10.1037/pas0000647.
  • Vajira, Lasantha Bandara Thambawita; Jha, Debesh; Riegler, Michael; Halvorsen, Pål; Hammer, Hugo Lewi; Johansen, Håvard D.; Johansen, Dag. The Medico-Task 2018: Disease detection in the gastrointestinal tract using global features and deep learning. (data) CEUR Workshop Proceedings 2018; Volum 2283. ISSN 1613-0073.
  • Gjerdrum, Anders Tungeland; Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. Performance principles for trusted computing with intel SGX. Communications in Computer and Information Science 2018; Volum 864. ISSN 1865-0929.s 1 - 18.s doi: 10.1007/978-3-319-94959-8_1.
  • Birrell, Eleanor; Gjerdrum, Anders Tungeland; Van Renesse, Robbert; Johansen, Håvard D.; Johansen, Dag; Schneider, Fred B.. SGX Enforcement of Use-Based Privacy. Association for Computing Machinery (ACM) 2018 ISBN 978-1-4503-5989-4.s 155 - 167.s doi: 10.1145/3267323.3268954.
  • Gaddam, Vamsidhar Reddy; Langseth, Ragnar; Stensland, Håkon Kvale; Griwodz, Carsten; Riegler, Michael; Kupka, Tomas; Espeland, Håvard; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. Camera Synchronization for Panoramic Videos. Springer 2018 ISBN 978-3-319-65840-7.s 565 - 592.s doi: 10.1007/978-3-319-65840-7_20.
  • Pettersen, Svein Arne; Johansen, Håvard D.; Matias Do Vale Baptista, Ivan Andre; Halvorsen, Pål; Johansen, Dag. Quantified Soccer Using Positional Data: A Case Study. Frontiers in Physiology 2018; Volum 9. ISSN 1664-042X.s doi: 10.3389/fphys.2018.00866.
  • Tedeschi, Enrico; Johansen, Håvard D.; Johansen, Dag. Trading Network Performance for Cash in the Bitcoin Blockchain. SciTePress 2018 ISBN 978-989-758-295-0.s 643 - 650.s doi: 10.5220/0006805906430650.
  • Pettersen, Robert; Johansen, Håvard D.; Valvåg, Steffen Viken; Johansen, Dag. Dynamically loading mobile/cloud assemblies. Communications in Computer and Information Science 2017; Volum 740. ISSN 1865-0929.s 170 - 186.s doi: 10.1007/978-3-319-62594-2_9.
  • Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. Secure Edge Computing with ARM TrustZone. SciTePress 2017 ISBN 978-989-758-245-5.s 102 - 109.s doi: 10.5220/0006308601020109.
  • Stenhaug, Magnus; Johansen, Håvard D.; Johansen, Dag. Managing Personalized Cross-cloud Storage Systems with Meta-code. SciTePress 2017 ISBN 978-989-758-243-1.s 694 - 700.s doi: 10.5220/0006377607220728.
  • Gjerdrum, Anders Tungeland; Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. Performance of Trusted Computing in Cloud Infrastructures with Intel SGX. SciTePress 2017 ISBN 978-989-758-243-1.s 668 - 674.s doi: 10.5220/0006373706960703.
  • Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Johansen, Dag. Implementing Informed Consent as Information-Flow Policies for Secure Analytics on eHealth Data: Principles and Practices. IEEE 2016 ISBN 978-1-5090-0943-5.s 107 - 112.s doi: 10.1109/CHASE.2016.39.
  • Stenhaug, Magnus; Johansen, Håvard D.; Johansen, Dag. Transforming Healthcare through Life-Long Personal Digital Footprints. IEEE 2016 ISBN 978-1-5090-0943-5.s 36 - 41.s doi: 10.1109/CHASE.2016.54.
  • Gurrin, Cathal Gerard; Giro-i-Nieto, Xavier; Radeva, Petia; Dimiccoli, Mariella; Johansen, Håvard D.; Joho, Hideo; Singh, Vivek K.. LTA 2016: The First Workshop on Lifelogging Tools and Applications. Association for Computing Machinery (ACM) 2016 ISBN 978-1-4503-3603-1.s 1487 - 1488.s doi: 10.1145/2964284.2980534.
  • Riegler, Michael; Lux, Mathias; Griwodz, Carsten; SPAMPINATO, CONCETTO; de Lange, Thomas; Eskeland, Sigrun Losada; Pogorelov, Konstantin; Tavanapong, Wallapak; Schmidt, Peter T; Gurrin, Cathal Gerard; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. Multimedia and Medicine: Teammates for Better Disease Detection and Survival. Association for Computing Machinery (ACM) 2016 ISBN 978-1-4503-3603-1.s 968 - 977.s doi: 10.1145/2964284.2976760.
  • Valvåg, Steffen; Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. LADY: Dynamic Resolution of Assemblies for Extensible and Distributed .NET Applications. SciTePress 2016 ISBN 978-989-758-182-3.s 118 - 128.s doi: 10.5220/0005912901180128.
  • Johansen, Håvard; Birrell, Eleanor; Van Renesse, Robbert; Schneider, Fred B.; Stenhaug, Magnus; Johansen, Dag. Enforcing Privacy Policies with Meta-Code. Association for Computing Machinery (ACM) 2015 ISBN 978-1-4503-3554-6.s doi: 10.1145/2797022.2797040.
  • Johansen, Håvard; Van Renesse, Robbert; Vigfusson, Ymir; Johansen, Dag. Fireflies: A Secure and Scalable Membership and Gossip Service. ACM Transactions on Computer Systems 2015; Volum 33 (2). ISSN 0734-2071.s doi: 10.1145/2701418.
  • Gurrin, Cathal; Johansen, Håvard; Sødring, Thomas; Johansen, Dag. Digital Chronofiles of Life Experience. Springer 2015; Volum 8852 (-) ISBN 978-3-319-15167-0. ISSN 0302-9743.s 263 - 274.s doi: 10.1007/978-3-319-15168-7_33.
  • Johansen, Håvard; Gurrin, Cathal Gerard; Johansen, Dag. Towards Consent-Based Lifelogging in Sport Analytic. Springer 2015; Volum 8936 (Part II) ISBN 978-3-319-14441-2. ISSN 0302-9743.s 335 - 344.s doi: 10.1007/978-3-319-14442-9_40.
  • Johansen, Håvard; Zhang, Wei; Hurley, Joseph; Johansen, Dag. Management of Body-Sensor Data in Sports Analytic with Operative Consent. IEEE conference proceedings 2014 ISBN 978-1-4799-2843-9.s doi: 10.1109/ISSNIP.2014.6827638.
  • Pettersen, Svein Arne; Johansen, Dag; Johansen, Håvard; Berg-Johansen, Vegard; Gaddam, Vamsidhar Reddy; Mortensen, Asgeir Oldernes; Langseth, Ragnar; Griwodz, Carsten; Stensland, Håkon Kvale; Halvorsen, Pål. Soccer Video and Player Position Dataset. ACM Publications 2014 ISBN 978-1-4503-2705-3.s 18 - 23.s doi: 10.1145/2557642.2563677.
  • Johansen, Håvard; Pettersen, Svein Arne; Halvorsen, Pål; Johansen, Dag. Combining Video and Player Telemetry for Evidence-Based Decisions in Soccer. (fulltekst) SciTePress 2013 ISBN 978-989-8565-79-2.s 197 - 205.
  • Renesse, Robbert van; Johansen, Håvard; Naigaonkar, Nihar; Johansen, Dag. Secure Abstraction with Code Capabilities. Parallel, Distributed and Network-Based Processing (PDP) 2013. ISSN 1066-6192.s 542 - 546.s doi: 10.1109/PDP.2013.87.
  • Johansen, Dag; Halvorsen, Pål; Johansen, Håvard; Riiser, Haakon; Gurrin, Cathal; Olstad, Bjørn; Griwodz, Carsten; Kvalnes, Åge; Hurley, Joseph; Kupka, Tomas. Search-based composition, streaming and playback of video archive content. Multimedia tools and applications 2012; Volum 61 (2). ISSN 1380-7501.s 419 - 445.s doi: 10.1007/s11042-011-0847-5.
  • Johansen, Dag; Johansen, Håvard; Halvorsen, Pål; Olstad, Bjørn; Gurrin, Cathal; Griwodz, Carsten. Composing Personalized Video Playouts Using Search. IEEE International Conference on Multimedia and Expo 2010. ISSN 1945-7871.s 1534 - 1539.
  • Scott, David; Gurrin, Cathal; Johansen, Dag; Johansen, Håvard. Searching and Recommending Sports Content on Mobile Devices. Lecture Notes in Computer Science (LNCS) 2010; Volum 5916. ISSN 0302-9743.s 779 - 781.s doi: 10.1007/978-3-642-11301-7.
  • Bellika, Johan Gustav; Ilebrekke, Lars; Bakkevoll, Per Atle; Johansen, Håvard; Scholl, Jeremiah; Johansen, Monika Alise. Authentication and Encryption in the Snow Disease Surveillance Network. Studies in Health Technology and Informatics 2009; Volum 150. ISSN 0926-9630.s 725 - 729.
  • Johansen, Dag; Johansen, Håvard; Aarflot, Tjalve; Hurley, Joseph; Kvalnes, Åge Andre; Gurrin, Cathal; Sav, Sorin; Olstad, Bjørn; Aaberg, Erik; Endestad, Tore; Håkon, Riiser; Griwodz, Carsten; Halvorsen, Pål. DAVVI: A prototype for the next generation multimedia entertainment platform. ACM Publications 2009 ISBN 978-1-60558-608-3.s 989 - 990.
  • Johansen, Håvard; Johansen, Dag. Resilient Software Mirroring With Untrusted Third Parties. Association for Computing Machinery (ACM) 2008 ISBN 978-1-60558-304-4.
  • Johansen, Dag; Johansen, Håvard. The Dynamic Enterprise Bus. IEEE 2008 ISBN 0-7695-3093-1.s 100 - 105.
  • Johansen, Håvard; Johansen, Dag; Renesse, Robbert van. FirePatch: Secure and Time-Critical Dissemination of Software Patches. Springer Science+Business Media B.V. 2007 (22) ISBN 978-0-387-72366-2. ISSN 1571-5736.s 373 - 384.
  • Johansen, Håvard; Allavena, Andre; Van Renesse, Robbert. Fireflies: scalable support for intrusion-tolerant network overlays. Operating systems review 2006; Volum 40 (4). ISSN 0163-5980.s 3 - 13.
  • Johansen, Håvard; Allavena, Andre; Van Renesse, Robbert. Fireflies: scalable support for intrusion-tolerant network overlays. ACM Press 2006 ISBN 1-59593-322-0.s 3 - 14.
  • Gurrin, Cathal Gerard; Hopfgartner, Frank; Hurst, Wolfgang; Johansen, Håvard; Lee, Hyowon; O'Connor, Noel. MultiMedia Modeling - 20th Anniversary International Conference, MMM 2014, Dublin, Ireland, January 6-10, 2014, Proceedings, Part II (LNCS 8326). Springer 2014 (8326) ISBN 978-3-319-04116-2. ISSN 0302-9743.s 365 - 368.s doi: 10.1007/978-3-319-04117-9_37.
  • Gurrin, Cathal Gerard; Hopfgartner, Frank; Hurst, Wolfgang; Johansen, Håvard; Lee, Hyowon; O'Connor, Noel. MultiMedia Modeling - 20th Anniversary International Conference, MMM 2014, Dublin, Ireland, January 6-10, 2014, Proceedings, Part I (LNCS 8325). Springer 2014 (8325) ISBN 978-3-319-04114-8. ISSN 0302-9743.s 192 - 204.s doi: 10.1007/978-3-319-04117-9_18.
  • Brenna, Lars; Singh, Isak Sunde; Johansen, Håvard D.; Johansen, Dag. TFHE-rs: A library for safe and secure remote computing using fully homomorphic encryption and trusted execution environments. Array 2022. ISSN 2590-0056.s doi: 10.1016/j.array.2021.100118.
  • Johansen, Dag; Johansen, Håvard D.; Riegler, Michael. Muligheter og skranker for bruk av teknologi og kunstig intelligens ved forebygging av fiskerikriminalitet. Blå krim dialogforum 2022-04-08 - 2022-04-08 2022.
  • Sharma, Aakash; Bye Nilsen, Thomas; Johansen, Håvard D.. Compliant Sharing of Sensitive Data with Dataverse and Lohpi. Dataverse Community Meeting 2021 2021-06-14 - 2021-06-17 2021.
  • Sharma, Aakash; Bye Nilsen, Thomas; Brenna, Lars; Johansen, Dag; Johansen, Håvard D.. Accountable Human Subject Research Data Processing using Lohpi. International Conference on Information-communication technologies enhanced Social Sciences and Humanities (ICTeSSH) 2021-06-28 - 2021-06-30 2021.
  • Jha, Debesh; Ali, Sharib; Emanuelsen, Krister; Hicks, Steven; Thambawita, Vajira L B; Garcia-Ceja, Enrique; Riegler, Michael A.; Lange, Thomas de; Schmidt, Peter T; Johansen, Håvard D.; Johansen, Dag Ove; Halvorsen, Pål. Kvasir-Instrument: Diagnostic and Therapeutic Tool Segmentation Dataset in Gastrointestinal Endoscopy. International Conference on Multimedia Modeling 2021-06-22 - 2021-06-24 2021.
  • Jha, Debesh; Tomar, Nikhil Kumar; Ali, Sharib; Riegler, Michael A.; Johansen, Håvard D.; Lange, Thomas de; Halvorsen, Pål. NanoNet: Real-Time Polyp Segmentation in VideoCapsule Endoscopy and Colonoscopy. 34th International Symposium on Computer-Based Medical Systems 2021-06-07 - 2021-06-09 2021.
  • Jha, Debesh; Ali, Sharib; Tomar, Nikhil Kumar; Johansen, Håvard D.; Johansen, Dag; Riegler, Michael; Halvorsen, Pål. Exploring Deep Learning Methods for Real-Time Surgical Instrument Segmentation in Laparoscopy. 2021 IEEE EMBS International Conference on Biomedical and Health Informatics (BHI) (fulltekst) 2021-07-27 - 2021-08-30 2021.
  • Tomar, Nikhil Kumar; Jha, Debesh; Ali, Sharib; Johansen, Håvard D.; Johansen, Dag; Riegler, Michael; Halvorsen, Pål. DDANet: Dual Decoder Attention Network for Automatic Polyp Segmentation. ICPR 2021: Pattern Recognition. ICPR International Workshops and Challenges 2021-01-10 - 2021-01-15 2021.
  • Jha, Debesh; Pia H, Smedsrud; Riegler, Michael; Halvorsen, Pål; de Lange, Thomas; Johansen, Dag; Johansen, Håvard D.. Kvasir-SEG: A Segmented Polyp Dataset. MMM 2020: International Conference on Multimedia Modeling 2020-01-05 - 2020-01-08 2020.
  • Myreng, Jørn K; Johansen, Håvard D.; Rui, Jon Petter. UiT-professor skeptisk til smitte-appen: – Råder alle til å sette seg inn i hvordan den fungerer. 2020.
  • Jha, Debesh; Yazidi, Anis; Riegler, Michael Alexander; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. LightLayers: Parameter Efficient Dense and Convolutional Layers for Image Classification. The 21st International Conference on Parallel and Distributed Computing, Applications and Technologies (PDCAT'20) 2020-12-28 - 2020-12-30 2020.
  • Johansen, Håvard D.; Johansen, Dag; Kupka, Tomas; Riegler, Michael; Halvorsen, Pål. Scalable Infrastructure for Efficient Real-Time Sports Analytics. 1st Workshop on Action Modelling for Interaction and Analysis in Smart Sports and Physical Education (MAIStroPE) 2020-10-29 - 2020-10-29 2020.
  • Tedeschi, Enrico; Nordmo, Tor-Arne Schmidt; Johansen, Dag; Johansen, Håvard D.. Predicting Transaction Latency with Deep Learning in Proof-of-Work Blockchains. 2019 IEEE International Conference on Big Data (Big Data) 2019-12-09 - 2019-12-12 2019.
  • Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Brenna, Lars; Johansen, Dag. Diggi: A Secure Framework for Hosting Native Cloud Functions with Minimal Trust. 2019 First IEEE International Conference on Trust, Privacy and Security in Intelligent Systems and Applications (TPS-ISA) 2019-12-12 - 2019-12-14 2019.
  • Jha, Debesh; Smedsrud, Pia; Riegler, Michael; Johansen, Dag; de Lange, Thomas; Halvorsen, Pål; Johansen, Håvard D.. ResUNet++: An Advanced Architecture for Medical Image Segmentation. 21st IEEE International Symposium on ​ Multimedia 2019-12-09 - 2019-12-11 2019.
  • Gjerdrum, Anders Tungeland; Johansen, Dag; Johansen, Håvard D.. BoronBase: A mutually distrusting clique-partitioned database implemented in Intel SGX. Corpore Sano Workshop 2019 2019-04-09 - 2019-04-09 2019.
  • Wiik, Theodor; Johansen, Håvard D.; Pettersen, Svein Arne; Baptista, Ivan; Kupka, Tomas; Johansen, Dag; Riegler, Michael; Halvorsen, Pål. Predicting Peek Readiness-to-Train of Soccer Players Using Long Short-Term Memory Recurrent Neural Networks. CBMI 2019: International Conference on Content-Based Multimedia Indexing 2019-09-04 - 2019-09-06 2019.
  • Andreassen, Kim; Johansen, Dag; Johansen, Håvard D.; Baptista, Ivan; Pettersen, Svein Arne; Riegler, Micheal; Halvorsen, Pål. Real-time Analysis of Physical Performance Parameters in Elite Soccer. CBMI 2019: International Conference on Content-Based Multimedia Indexing 2019-09-04 - 2019-09-06 2019.
  • Thambawita, Vajira; Jha, Debesh; Riegler, Michael; Halvorsen, Pål; Hammer, Hugo Lewi; Johansen, Håvard D.; Johansen, Dag. The Medico-Task 2018: Disease Detection in the Gastrointestinal Tract using Global Features and Deep Learning. (data) 2018.
  • Birrell, Eleanor; Gjerdrum, Anders Tungeland; Van Renesse, Robbert; Johansen, Håvard D.; Johansen, Dag; Schneider, Fred B.. SGX Enforcement of Use-Based Privacy. 2018 Workshop on Privacy in the Electronic Society 2018-10-15 - 2018-10-15 2018.
  • Johansen, Håvard D.; Moe, Marianne Lein. Sverre Hugo fikk e-posten sin hacket. Nå har han en klar oppfordring til andre.. (data) 2018.
  • Jha, Debesh; Thambawita, Vajira; Pogorelov, Konstantin; Riegler, Michael; Halvorsen, Pål; Johansen, Håvard D.; Johansen, Dag. Automatic Disease Detection in Videos Recorded in the Gastrointestinal Tract. SATIS 2018: The 1st ACM SIGOPS Summer School on Advanced Topics in Systems 2018-08-14 - 2018-08-17 2018.
  • Brenna, Lars; Johansen, Håvard D.; Johansen, Dag. Automatic methods for nutritional assessment. First International Conference on Precision Nutrition and Metabolism in Public Health and Medicine 2018-09-21 - 2018-09-26 2018.
  • Tedeschi, Enrico; Johansen, Håvard D.; Johansen, Dag. Trading Network Performance for Cash in the Bitcoin Blockchain. The 8th International Conference on Cloud Computing and Services Science, CLOSER 2018 2018-03-19 - 2018-03-21 2018.
  • Gjerdrum, Anders Tungeland; Pettersen, Robert; Johansen, Håvard D.; Van Renesse, Robbert; Johansen, Dag. Trusted Computing on Privacy Sensitive Data with Diggi. The 26th ACM Symposium on Operating Systems Principles 2017-10-28 - 2017-10-31 2017.
  • Birrell, Eleanor; Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Johansen, Dag; Renesse, Robbert van; Schneider, Fred B.. SGX Enforcement of Use-­Based Privacy. The 2nd International Workshop on Personal Data Systems (PDS 2018) 2017-08-16 - 2017-08-17 2017.
  • Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Pettersen, Robert; Renesse, Robbert van; Johansen, Dag. Safeguarding Analytics on Privacy Sensitive Data. The 2nd International Workshop on Personal Data Systems (PDS 2018) 2017-08-16 - 2017-08-17 2017.
  • Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. Secure Edge Computing with ARM TrustZone. IoTBDS 2017 - The 2nd International Conference on Internet of Things, Big Data and Security 2017-04-24 - 2017-04-26 2017.
  • Stenhaug, Magnus; Johansen, Håvard D.; Johansen, Dag. Managing Personalized Cross-cloud Storage Systems with Meta-code. CLOSER 2017 - The 7th International Conference on Cloud Computing and Services Science 2017-04-24 - 2017-04-26 2017.
  • Gjerdrum, Anders Tungeland; Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. Performance of Trusted Computing in Cloud Infrastructures with Intel SGX. CLOSER 2017 - The 7th International Conference on Cloud Computing and Services Science 2017-04-24 - 2017-04-26 2017.
  • Gurrin, Cathal Gerard; Giro-i-Nieto, Xavier; Radeva, Petia; Dimiccoli, Mariella; Johansen, Håvard D.; Joho, Hideo; Singh, Vivek K.. LTA 2016: The First Workshop on Lifelogging Tools and Applications. ACM Multimedia Conference - MM16 2016-10-15 - 2016-10-19 2016.
  • Riegler, Michael; Lux, Mathias; Griwodz, Carsten; SPAMPINATO, CONCETTO; de Lange, Thomas; Eskeland, Sigrun Losada; Pogorelov, Konstantin; Tavanapong, Wallapak; Schmidt, Peter T; Gurrin, Cathal Gerard; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. Multimedia and Medicine: Teammates for Better Disease Detection and Survival. ACM Multimedia Conference - MM16 2016-10-15 - 2016-10-19 2016.
  • Stenhaug, Magnus; Johansen, Håvard D.; Johansen, Dag. Transforming Healthcare through Life-Long Personal Digital Footprints. 2016 IEEE First International Conference on Connected Health: Applications, Systems and Engineering Technologies (CHASE) 2016-06-27 - 2016-06-29 2016.
  • Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Johansen, Dag. Implementing Informed Consent as Information-Flow Policies for Secure Analytics on eHealth Data: Principles and Practices. 2016 IEEE First International Conference on Connected Health: Applications, Systems and Engineering Technologies (CHASE) 2016-06-27 - 2016-06-29 2016.
  • Birrell, Eleanor; Gjerdrum, Anders Tungeland; Johansen, Håvard D.; Johansen, Dag; Van Renesse, Robbert; Schneider, Fred B.. SGX Enforcement of Use-Based Privacy. The 12th USENIX Symposium on Operating Systems Design and Implementation (OSDI '16) 2016-11-02 - 2016-11-04 2016.
  • Valvåg, Steffen; Pettersen, Robert; Johansen, Håvard D.; Johansen, Dag. LADY: Dynamic Resolution of Assemblies for Extensible and Distributed .NET Applications. CLOSER 2016 2016-04-23 - 2016-04-25 2016.
  • Johansen, Dag; Johansen, Håvard D.; Pettersen, Svein Arne; Johansen, Svein-Morten; Eidissen, Lars. Skal forske døgnet rundt på idrettstalenter fra Tromsø. (data) 2016.
  • Johansen, Håvard; Birrell, Eleanor; Van Renesse, Robbert; Schneider, Fred B.; Stenhaug, Magnus; Johansen, Dag. Enforcing Privacy Policies with Meta-Code. The 6th Asia-Pasific Systems Workshop 2015 ( APSYS'15 ) 2015-07-27 - 2015-07-28 2015.
  • Johansen, Håvard; Gurrin, Cathal Gerard; Johansen, Dag. Towards Consent-Based Lifelogging in Sport Analytic. 21st International Conference, MMM 2015 2015-01-05 - 2015-01-07 2015.
  • Johansen, Dag; Stenhaug, Magnus; Hanssen, Svenn Agnar; Johansen, Håvard; Johansen, Torje Dønnestad. Gir TIL kunnskap som er ønsket av Champions League-klubber. (data) 2014.
  • Pettersen, Svein Arne; Johansen, Dag; Johansen, Håvard; Berg-Johansen, Vegard; Gaddam, Vamsidhar Reddy; Mortensen, Asgeir Oldernes; Langseth, Ragnar; Griwodz, Carsten; Stensland, Håkon Kvale; Halvorsen, Pål. Soccer Video and Player Position Dataset. ACM Multimedia Systems (MMSys) 2014-03-19 - 2014-03-21 2014.
  • Johansen, Håvard; Wei, Zhang; Hurley, Joseph; Johansen, Dag. Management of Body-Sensor Data in Sports Analytic with Operative Consent. IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP) 2014-04-21 - 2014-04-25 2014.
  • Johansen, Håvard; Pettersen, Svein Arne; Halvorsen, Pål; Johansen, Dag. Combining Video and Player Telemetry for Evidence-based Decisions in Soccer. icSPORTS 2013 International Congress on Sports Science Research and Technology Support 2013-09-20 - 2013-09-22 2013.
  • Renesse, Robbert van; Johansen, Håvard; Naigaonkar, Nihar; Johansen, Dag. Secure Abstraction with Code Capabilities. 21st Euromicro International Conference on Parallel, Distributed and Network-Based Processing (PDP), 2013 2013-02-27 - 2013-03-01 2013.
  • Renesse, Robbert van; Johansen, Håvard; Naigaonkar, Nihar; Johansen, Dag. Secure Abstraction with Code Capabilities. (data) 2012.
  • Leer, Erik Bræck; Johansen, Håvard; Johansen, Dag. Detecting Events in Videos Using Semantic Analytics of Subtitles. 2011.
  • Holmstad, Øyvind; Johansen, Håvard; Johansen, Dag. Real-Time Annotation of Video Streams Using Staged Processing. 2011.
  • Johansen, Dag; Johansen, Håvard; Halvorsen, Pål; Olstad, Bjørn; Gurrin, Cathal; Griwodz, Carsten. Composing Personalized Video Plauouts Using Search. 2010 IEEE International Conference on Multimedia & Expo 2010-07-19 - 2010-07-23 2010.
  • Larsen, Webjørn Ivar; Johansen, Håvard. Time Constrained Video Playback. 2010.
  • Bellika, Johan Gustav; Ilebrekke, Lars; Bakkevoll, Per Atle; Johansen, Håvard; Scholl, Jeremiah; Johansen, Monika Alise. Authentication and encryption in the Snow Disease Surveillance Network. Medical Informatics in a United and Healty Europe 2009-08-30 - 2009-09-02 2009.
  • Johansen, Dag; Johansen, Håvard; Aarflot, Tjalve; Hurley, Joseph; Kvalnes, Åge Andre; Gurrin, Cathal; Sav, Sorin; Olstad, Bjørn; Aaberg, Erik; Endestad, Tore; Riiser, Haakon; Griwodz, Carsten; Halvorsen, Pål. DAVVI: a prototype for the next generation multimedia entertainment platform. ACM multimedia 2009 2009-10-19 - 2009-10-23 2009.
  • Johansen, Håvard; Østvik, Helle. Sulten doktor. 2008.
  • Johansen, Dag; Johansen, Håvard. The Dynamic Enterprise Bus. Fourth International Conference on Autonomic and Autonomous Systems (ICAS'08) 2008-03-16 - 2008-03-21 2008.
  • Johansen, Håvard; Johansen, Dag. Resilient Software Mirroring With Untrusted Third Parties. First ACM Workshop on Hot Topics in Software Upgrades (HotSWUp) 2008-10-20 - 2008.
  • Johansen, Dag; Johansen, Håvard. The Dynamic Enterprise Bus. 2007 (2007-66).
  • Johansen, Håvard; Johansen, Dag; Renesse, Robbert van. FirePatch: Secure and Time-Critical Dissemination of Software Patches. 22nd International Information Security Conference (SEC 2007) 2007-05-14 - 2007-05-16 2007.
  • Johansen, Håvard. Denial-of-service attacks and their detection and suppression. Prøveforelesning til PhD-graden 2007-11-26 - 2007-11-26 2007.
  • Johansen, Håvard; Johansen, Dag. Intrusion-Tolerant Membership Management for Peer-to-Peer Overlay Networks. 2007 ISBN 978-82-92461-69-3.
  • Johansen, Håvard; Johansen, Dag; Renesse, Robbert van. FirePatch: Secure and Time-Critical Dissemination of Patches. 2006 (2006-62).
  • Johansen, Håvard D; Allavena, Andre; Van Renesse, Robbert. Fireflies: Scalable Support for Intrusion-Tolerant Network Overlays. Eurosys 2006-04-18 - 2006-04-21 2006.
  • Johansen, Håvard D; Van Renesse, Robbert. Fireflies: Scalable Intrusion-Tolerant Membership for Supporting Overlay Networks. Bits On Our Minds (BOOM) 2005-03-09 - 2005.
  • Johansen, Dag; Johansen, Håvard D; Renesse, Robbert van. Environment Mobility - Moving the Desktop Around. 2nd Workshop on Middleware for Pervasive and Ad-Hoc Computing. Toronto, Canada. (fulltekst) (prosjekt) 2004-10-18 - 2004-10-22 2004.
  • Johansen, Dag; Johansen, Håvard D; Van Renesse, Robbert. Improving Object Search using Hints. International Workshop on Reliable Peer-to Peer Distributed Systems 2002-10-13 - 2002.
  • Johansen, Dag; Johansen, Håvard D; Van Renesse, Robbert. Improving Object Search using Hints. IEEE Computer Society 2002 ISBN 0-7695-1659-9.s 336 - 340.
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