Associate Professor

Håvard D. Johansen

Associate professor Department of Computer Science

77646738

+47 91110987

havard.johansen@uit.no

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Tromsø

REALF A 261 (Click for map directions)

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.

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.

Thambawita, Vajira; 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 A.. DeepSynthBody: the beginning of the end for data deficiency in medicine. IEEE conference proceedings 2021 ISBN 978-1-7281-5935-5.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 A.; Halvorsen, Pal. 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.

Jha, Debesh; Ali, Sharib; Hicks, Steven; Thambawita, Vajira L B; Borgli, Hanna; Smedsrud, Pia H.; 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.

Sharma, Aakash; Bye Nilsen, Thomas; Czerwinska, Katja P; 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.

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 2020; Volum 1 (3). ISSN 2691-1957.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.

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: https://www.frontiersin.org/research-topics/5516/wearable-sensor-technology-for-monitoring-training-load-and-health-in-the-athletic-population Frontiers 2020 ISBN 978-2-88963-4620.s 264 - 269.s doi: 10.3389/978-2-88963-462-0.

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.

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.

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. (https://ieeexplore.ieee.org/abstract/document/8959021) 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. (https://doi.org/10.1109/BigData47090.2019.9006228) 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: https://ieeexplore.ieee.org/document/8877406/ 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.

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.

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. (http://ceur-ws.org/Vol-2283/) 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.

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.

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; 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; 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; 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; 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.

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, Håvard; Pettersen, Svein Arne; Halvorsen, Pål; Johansen, Dag. Combining Video and Player Telemetry for Evidence-Based Decisions in Soccer. (Fulltekst: http://home.ifi.uio.no/paalh/publications/files/icSport2013.pdf SciTePress 2013 ISBN 978-989-8565-79-2.s 197 - 205.

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.

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.

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, 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. ACM Press 2006 ISBN 1-59593-322-0.s 3 - 14.

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.

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.

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.

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) 2021-07-27 - 2021-08-30 2021.

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. ISSN 2169-3536.

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; 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.

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.

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.

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.

Jha, Debesh; Yazidi, Anis; Riegler, Michael A.; Johansen, Dag; Johansen, Håvard D.; Halvorsen, Pål. LightLayers: Parameter Efficient Dense and Convolutional Layers for Image Classification. Paper presentation 2020-12-28 - 2020-12-28 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.

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.

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. (https://arxiv.org/abs/1810.13278) 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.. (https://www.itromso.no/nyheter/2018/09/28/Sverre-Hugo-fikk-e-posten-sin-hacket.-N%C3%A5-har-han-en-klar-oppfordring-til-andre-17599902.ece) 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.

Johansen, Dag; Johansen, Håvard D.; Pettersen, Svein Arne; Johansen, Svein-Morten; Eidissen, Lars. Skal forske døgnet rundt på idrettstalenter fra Tromsø. (http://www.itromso.no/sport/2016/01/12/Skal-forske-d%C3%B8gnet-rundt-p%C3%A5-idrettstalenter-fra-Troms%C3%B8-12018693.ece) 2016.

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, 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. (http://web.retriever-info.com/services/archive/displayDocument?documentId=0550122014041012E0C2A49937C513E5A0F1A201C26D4E&serviceId=2) 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. (http://arxiv.org/abs/1210.5443v1) 2012.

Holmstad, Øyvind; Johansen, Håvard; Johansen, Dag. Real-Time Annotation of Video Streams Using Staged Processing. 2011.

Leer, Erik Bræck; Johansen, Håvard; Johansen, Dag. Detecting Events in Videos Using Semantic Analytics of Subtitles. 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.

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.

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, Håvard; Østvik, Helle. Sulten doktor. 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. Fourth International Conference on Autonomic and Autonomous Systems (ICAS'08) 2008-03-16 - 2008-03-21 2008.

Johansen, Dag; Johansen, Håvard. The Dynamic Enterprise Bus. 2007 (2007-66).

Johansen, Håvard; Johansen, Dag. Intrusion-Tolerant Membership Management for Peer-to-Peer Overlay Networks. 2007 ISBN 978-82-92461-69-3.

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; 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; 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: http://www.waif.cs.uit.no/publications/mpac_johansen.pdf (Prosjekt: http://www.waif.cs.uit.no/) 2004-10-18 - 2004-10-22 2004.

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.

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.