Univ.-Prof. Dr. Helmut Hlavacs

University of Vienna >> Faculty of Computer Science >> Entertainment Computing

Books

G. Wallner, S. Kriglstein, H. Hlavacs, R. Malaka, A. Lugmayr, H.-S. Yang (edrs.), Entertainment Computing - ICEC 2016, Springer Berlin Heidelberg New York, LNCS 9926, 2016. ISBN 978-3-319-46099-4.

R. Mateus-Berr, H. Hlavacs, A. Lawitschka, M. Nebel (Hrsg.), Tröstgeschichten, Eigenverlag Universität für angewandte Kunst Wien, Wien 2015.

J.-M. Pierson, H. Hlavacs (Eds.), Proceedings of the COST Action IC0804 on Energy Efficiency in Large Scale Distributed Systems, 2nd Year, 2011. ISBN : 978-2-917490-18-1 - EAN : 9782917490181

K. Hummel, H. Hlavacs, W. Gansterer (Eds.), Proceedings of the PERFORM 2010 workshop, Springer LNCS (6821), Vienna, Austria, Oct. 14-16 2010.

J.-M. Pierson, H. Hlavacs (Eds.), Proceedings of the COST Action IC0804 on Energy Efficiency in Large Scale Distributed Systems, 1st Year, 2010. ISBN: 978-2-917490-10-5 - EAN : 9782917490105

H. Hlavacs, C.W. Ueberhuber, High-Performance Computers-Hardware, Software, and Performance Simulation. Frontiers of Simulation, SCS Europe, Ghent, 2001. ISBN 1-56555-233-4 / 3-936150-14-1.

Book Chapters

H. Hlavacs, Realität - Virtuell, Erweitert, Reduziert - Reell? In Transmedialisierung (S. Coelsch-Foisner und C. Herzog, Hrsg.), Wissenschaft und Kunst: Kulturelle Dynamiken / Cultural Dynamics, Winter-Verlag Heidelberg, 2019.

H. Hlavacs, Next Generation mHealth: Games, Apps, Ökosysteme, in Gesellschaft im Wandel - Gesellschaftliche, wirtschaftliche und ökologische Perspektiven (J. Fritz, N. Tomaschek, Hrsg.), Waxmann Münster, New York, München, Berlin, 2016. ISBN 978-3-8309-3465-3.

J.M. Pierson, H. Hlavacs, Introduction to energy efficiency in large scale distributed systems, in Large-Scale Distributed Systems and Energy Efficiency: A holistic view (J.M. Pierson edr.), John Wiley & Sons, Inc., of 111 River Street, Hoboken, NJ, 2015.

S. Brienza, S. Efsun Cebeci, S.-S. Masoumzadeh, H. Hlavacs, Oe. Oekasap, G. Anastasi, Energy Efficiency in P2P Systems and Applications, in Large-Scale Distributed Systems and Energy Efficiency: A holistic view (J.M. Pierson edr.), John Wiley & Sons, Inc., of 111 River Street, Hoboken, NJ, 2015.

J. Mair, Z. Huang, D. Eyers, L. Cupertino, G. Da Costa, J.-M. Pierson, H. Hlavacs, Power Modeling, in Large-Scale Distributed Systems and Energy Efficiency: A holistic view (J.M. Pierson edr.), John Wiley & Sons, Inc., of 111 River Street, Hoboken, NJ, 2015.

G. Da Costa, H. Hlavacs, K.A. Hummel, J.-M. Pierson, Modeling the energy consumption of distributed applications, in Handbook of Energy-Aware and Green Computing (I. Ahmad, S. Ranka, Eds.), Chapman and Hall/CRC, January 27, 2012.

S. Buchinger, J. Wippersberg, K. Lojka, K. Macher, W. Robitza, M. Nezveda, P. Hummelbrunner, H. Hlavacs, Mobile TV Content Design Rules, in: TV Content Analysis: Techniques and Applications (Y. Kompatsiaris, B. Merialdo, S. Lian, Eds.), CRC Press, Taylor Francis LLC, March 2012.

H. Hlavacs C. Kurz., IP Internetworking, in CRC Press Industrial Communication Technology Handbook (R. Zurawski edr.), CRC Press, Taylor & Francis, London New York, 2005. ISBN 0-8493-3077-7.

K.A. Hummel, H. Hlavacs, Mobile IP Routing, in CRC Press Industrial Information Technology Handbook (R. Zurawski edr.), CRC Press, Taylor & Francis, London New York, 2004. ISBN 0849319854.

C. Kurz, H. Hlavacs, TCP/IP Architecture, Protocols and Services, in CRC Press Industrial Information Technology Handbook (R. Zurawski edr.), CRC Press, Taylor & Francis, London New York, 2004. ISBN 0849319854.

Journal Papers

O. Kothgassner, A. Felnhofer, H. Hlavacs, L. Beutl, A. Goreis, J. Kafka, M. Kaufmann, K. Atteneder, K. Hennig-Fast, Virtual social support buffers stress response: An experimental comparison of real-life and virtual support prior to a social stressor, accepted by Journal of Behavior Therapy and Experimental Psychiatry.

A. Felnhofer, H. Hlavacs, L. Beutl, I. Kryspin-Exner, O. Kothgassner, Physical presence, social presence and anxiety in participants with social anxiety disorder during virtual cue exposure, accepted by Cyberpsychology, Behavior, and Social Networking.

A. Abbasi, D. H. Ting, H. Hlavacs, L. Vale Costa, A. I. Veloso, An Empirical Validation of a Conceptual Model Predicting Consumer Videogame Engagement Triggered Through Playful-Consumption Experiences, Entertainment Computing 29 (March 2019), Elsevier, pp. 43-55.

O.D. Kothgassner, A. Goreis, J.X. Kafka, H. Hlavacs, L. Beutl, I. Kryspin-Exner, and A. Felnhofer, Agency and gender influence older adults' presence-related experiences in an interactive virtual environment, Cyberpsychology, Behavior, and Social Networking 21-5 (May 2018), pp. 318-324.

A. Fellnhofer, J.X. Kafka, H. Hlavacs, L. Beutl, I. Krypsin-Exner, O. Kothgassner, Meeting others virtually in a day-to-day setting: Investigating social avoidance and prosocial behavior towards avatars and agents, Computers in Human Behavior 80 (March 2018), Elsevier, pp. 399-406.

M. Imran, H. Hlavacs, F. Alam Khan, S. Jabeen, F. Gul Khan, S. Shah, M. Alharbi, Aggregated Provenance and its Implications in Clouds, Future Generation Computer Systems 81 (April 2018), Elsevier, pp. 348-358.

K. Peters, F. Kayali, M. Silbernagl, A. Lawitschka, H. Hlavacs, A proposed framework for the collection of health-related data from Serious Games and Apps, International Journal of Serious Games 4-2 (2017), special issue on Games & Accessibility.

W. Gaisbauer, H. Hlavacs, Procedural Attack! Procedural Generation for Populated Virtual Cities: A Survey, International Journal of Serious Games 4-2 (2017), special issue on Games & Accessibility.

M. Imran, H. Hlavacs, I.Ul Haq, B. Jan, F. Alam Khan, A. Ahmad, Provenance Based Data Integrity Checking and Verification in Cloud Environments, PLOS One, May 2017, 2017.

A. Lugmayr, E. Sutinen. J. Suhonen, Carolina Islas Sendano, H. Hlavacs, Serious Storytelling and Serious Entertainment - A Survey and Definition, Multimedia Tools and Applications 76-14 (2017), pp. 15707-15733.

A. Z. Abbasi, D. Hooi Ting, and H. Hlavacs, Engagement in Games: Developing an Instrument to Measure Consumer Videogame Engagement and Its Validation, International Journal of Computer Games Technology, vol. 2017, 2017.

O. D. Kothgassner, M. Griesinger, K. Kettner, K. Wayan, S. Völkl-Kernstock, H. Hlavacs, L. Beutl, A. Felnhofer, Real-life prosocial behavior decreases after being socially excluded by avatars, not agents. Computers in Human Behavior 70 (May 2017), pp. 261-269.

F. Kayali , M. Silbernagl, K. Peters, R. Mateus-Berr, A. Reithofer, D. Martinek, A. Lawitschka, and H. Hlavacs, Design Considerations for a Serious Game for Children after Hematopoietic Stem Cell Transplantation, in Special Issue on Fun and Engaging Computing Technologies for Health, Entertainment Computing 15 (2016), Elsevier, pp. 57-73.

O.D. Kothgassner, A. Felnhofer, H. Hlavacs, L. Beutl, R. Palme, I. Kryspin-Exner, L.M. Glenk, Salivary cortisol and cardiovascular reactivity to a public speaking task in a virtual and real-life environment, Computers in Human Behavior Volume 62 (2016), Elsevier, pp. 124-135.

C. Helf, H. Hlavacs, Apps for Life Change: Critical Review and Solution Directions, Entertainment Computing 14 (2016), Elsevier, pp. 11-17.

S. Brienza, S. E. Cebeci, S. S. Masoumzadeh, H. Hlavacs, Ö. Özkasap, G. Anastasi, A Survey of Energy Efficiency in P2P Systems: File Distribution, Content Streaming and Epidemics, ACM Computing Surveys 48-3 (2015).

A. Janecek, D. Valerio, K.A. Hummel, F. Ricciato, H. Hlavacs, The Cellular Network as a Sensor: From Mobile Phone Data to Real-time Road Traffic Monitoring, IEEE Transactions on Intelligent Transportation Systems 16-5 (2015).

R. Mayrhofer, H. Hlavacs, R.D. Findling, Optimal Derotation of Shared Acceleration Time Series by Determining Relative Spatial Alignment, International Journal of Pervasive Computing and Communications (IJPCC) 11-4 (2015), Emerald.

A. Felnhofer, O. D Kothgassner, M. Schmidt, A.-K. Heinzle, L. Beutl, H. Hlavacs, I. Kryspin-Exner, Is virtual reality emotionally arousing? Investigating five emotion inducing virtual park scenarios, International Journal of Human-Computer Studies Volume 82 (October 2015), pp. 48-56, Elsevier.

L. Draschkowitz, C. Draschkowitz, H. Hlavacs, Using Video Analysis and Machine Learning for Predicting Shot Success in Table Tennis, Creative Technologies vol 2 issue 5 (2015), European Alliance for Innovation.

S. Buchinger, W. Robitza, M. Nezveda, E. Hotop, P. Hummelbrunner, M. C. Sack, H. Hlavacs, Evaluating Feedback Devices for Time-Continuous Mobile Multimedia Quality Assessment, Signal Processing: Image Communication 29-9 (2014), pp. 921-934, Elsevier.

H. Hlavacs, Enhancing the Position Estimates of Unmanned Aerial Vehicles by Cooperation, International Journal of Pervasive Computing and Communications (IJPCC) 10-3 (2014), Emerald Group Publishing.

A. Felnhofer, O. D. Kothgassner, T. Hetterle, L. Beutl, H. Hlavacs, & I. Kryspin-Exner, Afraid to be there? Evaluating the relation between presence, self-reported anxiety and heart rate in a virtual public speaking task, Cyberpsychology, Behavior, and Social Networking 17-5 (2014), pp. 310-316.

A. Felnhofer, O. D. Kothgassner, N. Hauk, L. Beutl, H. Hlavacs & I. Kryspin-Exner, Physical and Social Presence in Collaborative Virtual Environments: Exploring age and gender differences with respect to empathy, Computers in Human Behavior Volume 31, February 2014, pp. 272-279.

M. Imran, H. Hlavacs, Provenance Framework for the Cloud Infrastructure: Why and How?, International Journal On Advances in Intelligent Systems 6-1+2 (2013).

H. Hlavacs, K.A. Hummel, Cooperative Positioning when using Local Position Information: Theoretical Framework and Error Analysis, IEEE Transactions on Mobile Computing 12-10 (2013).

B. Klein and H. Hlavacs, A Socially Aware Caching Mechanism for Encounter Networks, Telecommunications Systems Journal 51-4 (2012), Springer, 2012, pp. 297-304.

H. Hlavacs, R. Weidlich, T. Treutner, Load-Dependent Energy Saving in Future Home Environments, Telecommunication Systems 51-1 (2012), Springer, 2012, pp. 43-52.

H. Hlavacs, R. Weidlich, T. Treutner, Energy Efficient Peer-to-Peer File Sharing, The Journal of Supercomputing 62-3 (2012), Springer, 2012, pp. 1167-1188.

S. Buchinger, S. Kriglstein, S. Brandt, H. Hlavacs, A Survey on User Studies and Technical Aspects of Mobile Multimedia Applications, Entertainment Computing 2-3 (2011), Elsevier, pp. 175-190.

H. Hlavacs, Modeling Energy Efficiency of File Sharing, e&i Elektrotechnik und Informationstechnik 11 (2010), Springer, 2010.

S. Buchinger, H. Hlavacs, Optimal Server Bandwidth for Mobile Video on Demand, Annals of Telecommunications Volume 65, Numbers 1-2, Februar 2010, pp. 31-46.

H. Hlavacs, K.A. Hummel, R. Weidlich, A. Houyou, H. de Meer, Modelling energy efficiency in distributed home environments, Int. J. Communication Networks and Distributed Systems 4-2 (2010), pp. 161-182.

K.A. Hummel, H. Hlavacs, A. Lilgenau, H. Mayer, V. Moser-Siegmeth, Towards Ambient Assisted Shared Living for the Elderly, International Reports on Socio-Informatics (IRSI) 6-3 (2009), pp. 35-49.

A. Berl, H. de Meer, H. Hlavacs and T. Treutner, Virtualization in Future Home Environments, IEEE Communications Magazine 47-12 (2009), pp.62-67.

S. Tolic, H. Hlavacs, A Testbed for P2P Gaming using Time Warp, Transactions on Edutainment, issue II, Springer, 2009.

H. Hlavacs, R. Weidlich, K.A. Hummel, A. Houyou, A. Berl, H. de Meer, Distributed Energy Efficiency in Future Home Environments, Annals of Telecommunications 63:7-8, Sept.-Oct. 2008.

H. Hlavacs, W. Gansterer, H. Schabauer, J. Zottl, M. Petraschek, T. Hoeher, O. Jung, Enhancing ZRTP by using Computational Puzzles, Journal of Universal Computer Science 14-5 (2008), pp. 693-716. (pdf)

T. Hoeher, M. Petraschek, O. Jung, H. Hlavacs, W. Gansterer, Security and Usability Aspects of Man-in-the-Middle Attacks on ZRTP, Journal of Universal Computer Science 14-5 (2008), pp. 673-692. (pdf)

H. Hlavacs, S. Buchinger, Hierarchical Video Patching with Optimal Server Bandwidth, ACM Transactions on Multimedia Computing Communications and Applications (TOMCCAP) 4-1 (2008). (pdf)
©ACM, (2008). This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM TOMCCAP 4-1 (2008).

S. Buchinger, H. Hlavacs, Subjective Quality of Mobile MPEG-4 Videos with Different Frame Rates, Journal of Mobile Multimedia (JMM) 1-4 (2006), Rinton Press, pp. 327-341.

H. Hlavacs, M. Haddad, C. Lafouge, D. Kaplan, J. Ribeiro, The CODIS Content Delivery Network, in Computer Networks 48 (2005), Elsevier, pp. 75-89.

H. Hlavacs, Key Issues in Pervasive Computing, ÖGAI Journal 23 (2004), pp. 16-23.

G. Haring, H. Hlavacs, K. Hummel, Performance Issues in Distributed Systems, Journal of Parallel and Distributed Computing Practices 4-4 (2001).

E. Haunschmidt, H. Hlavacs, D.F. Kvasnicka, C.W. Ueberhuber, Hochleistungsrechnen mit PC-Clustern, ZID-Line (Informationen des Zentralen Informatikdienstes der Technischen Universität Wien) 3 (2000). In German. (pdf)

Conference / Workshop Papers

2019

A. Z. Abbasi, D. Ting, H. Hlavacs, S. Fayyaz, B. Wilson, Playful-Consumption Experience and Consumer Videogame Engagement in the lens of S-R model: An Empirical Study, HCII 2019, Orlando, Florida, 26-21 July 2019.

2018

P. Pazour, A. Janecek, H. Hlavacs, Virtual Reality Conferencing, IEEE AIVR 2018, Taichung, Taiwan, Dec 10-12, 2018.

A. Z. Abbasi, D. H. Ting, M. S. Fayyaz, H. Hlavacs, Modelling Consumers' Observational Learning in Digital Gaming: A Conceptual Model, Game Days 2018, Darmstadt, Germany, Nov 7-8 2018.

B. Göbl, D. Hristova, S. Jovicic, T. Slunecko, M.-F. Chevron, H. Hlavacs, Towards a more reflective social media use through serious games and co-design, Joint Conference in Serious Games (JCSG) 2018, November 7-8, 2018, Darmstadt, Germany.

V. Stadler, H. Hlavacs, Blind Adventure - A Game Engine for Blind Game Designers, CHI PLAY 2018, 28-31 October 2018, Melbourne, Australia.

A. Hackl, H. Hlavacs, Diminishing Reality, International Conference on Entertainment Computing (IFIP-ICEC 2018), Poznan, Poland, Sept. 17-20 2018.

S. Feichter, H. Hlavacs, Data Reduction of Indoor Point Clouds, International Conference on Entertainment Computing (IFIP-ICEC 2018), Poznan, Poland, Sept. 17-20 2018.

W. Oliveira, W. Gaisbauer, M. Tizuka, E. Clua, H. Hlavacs, Mixed Reality Cycling in an Infinite Procedurally Generated City, International Conference on Entertainment Computing (IFIP-ICEC 2018), Poznan, Poland, Sept. 17-20 2018.

A. Moser, H. Hlavacs, Learning Supported by Story Templates, 12th European Conference on Games Based Learning (ECGBL 2018), Sophia Antipolis, France, Oct. 4-5 2018.

A. Moser, H. Hlavacs, Story Templates - Serious Storytelling to Support Learning, The 18th IEEE International Conference on Advanced Learning Technologies (ICALT) 2018, Mumbai, July 9.-13 2018.

2017

C. Pressler, H. Hlavacs, Timebender: A Multiplayer Game featuring Bullet Time Mechanics, 14th Conference on Advances in Computer Entertainment (ACE 2017), London, Dec 14-17 2017.

A.Z. Abbasi, D.H. Ting, H. Hlavacs, Playful-Consumption Experience in Digital Game Playing: A Scale Development, IFIP ICEC 2017, Tsukuba, Japan, Sept. 18-21 2017.

M. Polzer, H. Hlavacs, Designing Game-Based Interventions for Subverting Normative Attitudes, IFIP ICEC 2017, Tsukuba, Japan, Sept. 18-21 2017.

M. Stolze, H. Hlavacs, Invisible Sound: An app enabling blind people to compose music, IFIP ICEC 2017, Tsukuba, Japan, Sept. 18-21 2017.

P. Boros, H. Hlavacs, MuMail - A Simple Multimedia Email Client, INTETAIN 2017, June 20-21 2017, Funchal, Madeira.

B. Stetina, N. Rodax, A. Klaps, Z. Kovacovsky, S. Sertkan & H. Hlavacs, Racism and Sexism approached with "Purpose", Poster at General Online Research (GOR) 2017, Berlin, March 15-17, 2017.

2016

M. Stolze, H. Hlavacs, InvisibleSound: An app enabling blind people to compose music, Workshop on Game Accessibility at ICEC 2016, Sept 27th 2016.

O. Kothgassner, H. Hlavacs, L. Beutl, L. Glenk, R. Palme, A. Felnhofer, Two experimental virtual paradigms for stress research: Developing avatar-based approaches for inter-personal and evaluative stressors, 15th International Conference on Entertainment Computing (ICEC 2016), Vienna, Austria, Sept. 28-30 2016.

A. Abbasi, T. Hooi, H. Hlavacs, A Revisit of the Measurements on Engagement in Videogames: A New Scale Development, short paper at 15th International Conference on Entertainment Computing (ICEC 2016), Vienna, Austria, Sept. 28-30 2016.

A. Abbasi, D.T. Hooi, H. Hlavacs, Proposing a New Conceptual Model Predicting Consumer Videogame Engagement Triggered Through Playful Consumption Experiences, 15th International Conference on Entertainment Computing (ICEC 2016), Vienna, Austria, Sept. 28-30 2016.

S. Masoumzadeh, H. Hlavacs, A Self-Adaptive Performance-Aware Capacity Controller in Overbooked Datacenters, International Conference on Cloud and Autonomic Computing (ICCAC 2016), Augsburg, Germany, Sept. 12-16 2016. (Received Best Paper Award)

S. Masoumzadeh, H. Hlavacs, A Gossip-Based Dynamic Virtual Machine Consolidation Strategy for Large-Scale Cloud Data Centers, International Workshop on Adaptive Resource Management and Scheduling for Cloud Computing (ARMS-CC-2016), July 29, Chicago, USA.

H. Hlavacs, R. Wölfle, K. Peters, D. Martinek, J. Kuczwara, F. Kayali, A. Reithofer, R. Mateus-Berr, B. Brunmair, S. Lehner, A. Lawitschka, Usability and Fun of the INTERACCT Client, EAI International Conference on Games fOr WELL-being (GOWELL 2016), June 14-16 2016, Budapest, Hungary.

S.S. Masoumzadeh, H. Hlavacs, L. Tomas, A Self-Adaptive Performance Aware Capacity Controller in Overbooked Datacenters, short paper and poster at 13th IEEE International Conference on Autonomic Computing (ICAC 2016), July 19-22 2016, Wuerzburg, Germany.

D. Mirk, A. Janecek, H. Hlavacs, Towards Single-Failure-Tolerant Multicopters, 2nd Workshop on Micro Aerial Vehicle Networks, Systems, and Applications for Civilian Use (DroNet 2016), June 26th 2016, Singapur.

K. Peters, A. Unterbrunner, D. Martinek, A. Hofmann, H. Hlavacs, Feasibility of Physiotherapy Exercise Capturing using a Low-Cost Motion Capture System, 9th International Conference on Computer Games and Allied Technologies (CGAT 2016), March 28-29 2016, Singapore.

2015

C. Helf, P. Zwickl, H. Hlavacs, P. Reichl, mHealth Stakeholder Integration: A gamification-based framework-approach towards behavioural change, The 13th International Conference on Advances in Mobile Computing and Multimedia (MoMM 2015), 11 - 13 December 2015, Brussels, Belgium.

B. Göbl, H. Hlavacs, J. Hofer, I. Mueller, H. Muellner, C. Schubert, H. Spallej, C. Rybka and M. Sprung, MindSpace: Treating Anxiety Disorders in Children with a CBT Game, Gala Conf 2015, Dec. 9-11, Rome, Italy.

K. Peters, F. Kayali, A. Lawitschka, M. Silbernagl, R. Matheus-Berr, D. Martinek, H. Hlavacs, INTERACCT: Remote Data Entry System with Game-Elements for young Leukaemia Patients, IEEE Healthcom 2015, Boston, USA, Oct. 14-17 2015.

P. Schwab, H. Hlavacs, Capturing the Essence: Towards the Automated Generation of Transparent Behavior Models, Eleventh AAAI Conference on Artificial Intelligence and Interactive Digital Entertainment (AIIDE-15) in Santa Cruz, California, Nov. 16-18 2015.

R. Mateus-Berr, B. Brunmair, H. Hlavacs, F. Kayali, J. Kuczwara, S. Lehner, D. Martinek, M. Nebel, K. Peters, A. Reithofer, R. Woelfle, M. Silbernagl, M. Sprung, Co-Designing Avatars for Children with Cancer, LearnxDesign 2015: The 3rd International Conference for Design Education Researchers and PreK-16 Design Educators, Chicago, June 28-30 2015.

S.S. Masoumzadeh, H. Hlavacs, Dynamic Virtual Machine Consolidation: A Multi Agent Learning Approach, IEEE International Conference on Autonomic Computing (ICAC), 7-10 July 2015, Grenoble, France, pp. 161-162.

S.S. Masoumzadeh, H. Hlavacs, A Cooperative Multi Agent Learning Approach to Manage Physical Host Nodes for Dynamic Consolidation of Virtual Machines, IEEE 4th Symposium on Network Cloud Computing and Applications (NCCA) 2015, Garching, Munich, June 11-12, 2015.

D. Mirk, H. Hlavacs, Virtual Tourism with Drones: Experiments and Lag Compensation, DroNet 2015 - Workshop on Micro Aerial Vehicle Networks, Systems, and Applications for Civilian Use, Florence, Italy, May 18 2015.

P. Schwab, H. Hlavacs, PALAIS: A 3D Simulation Environment for Artificial Intelligence in Games, 6th International Symposium on AI & Games, University of Kent, Canterbury, UK, 20th April 2015.

F. Kayali, K. Peters, J. Kuczwara, A. Reithofer, D. Martinek, R. Wölfle, R. Mateus-Berr, Z. Lehner, M. Silbernagl, M. Sprung, A. Lawitschka, H. Hlavacs, Participatory Game Design for the INTERACCT Serious Game for Health, Joint Conference on Serious Games (JCSG) 2015, Huddersfield, UK, 3-4 June 2015.

K. Peters, F. Kayali, A. Reithofer, R. Wölfle, R. Mateus-Berr, J. Kuczwara, Z. Lehner, A. Lawitschka, B. Brunmaier, D. Martinek, M. Silbernagl, H. Hlavacs, Serious Game Scores as Health Condition Indicator for Cancer Patients, Medical Informatics Europe (MIE) 2015, Madrid, Spain, May 27.-29 2015.

A. Hofmann, H. Hlavacs , Gaming and Entertainment Technologies for Includification, 3rd International Workshop on Virtual and Augmented Assistive Technology (VAAT) at IEEE Virtual Reality 2015, Arles, France, March 23, 2015.

B. Göbl, H. Hlavacs, J. Hofer, I. Müller, H. Müllner, C. Schubert, H. H. Spallek, C. Rybka, and M. Sprung, MindSpace: A Cognitive Behavioral Therapy Game for Treating Anxiety Disorders in Children, poster at IFIP ICEC 2015, Trondheim, Norway, 30.9.-2.10.2015.

C. Helf, P. Zwickl, H. Hlavacs, P. Reichl, Towards A Framework for Gamification-based Intervention Mapping in mHealth, poster at IFIP ICEC 2015, Trondheim, Norway, 30.9.-2.10.2015.

2014

F. Kayali, K. Peters, A. Reithofer, R. Mateus-Berr, Z. Lehner, D. Martinek, M. Sprung, M. Silbernagl, A. Lawitschka, H. Hlavacs, A Participatory Game Design Approach for Children After Cancer Treatment, ACE 2014 workshop Designing Systems for Health and Entertainment: what are we missing?, Funchal, Madeira, 11. Nov. 2014.

R. Mayrhofer, H. Hlavacs and R. D. Findling, Optimal Derotation of Shared Acceleration Time Series by Determining Relative Spatial Alignment, 16th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2014), 4-6 Dec 2014, Hanoi, Vietnam. (Received Best Paper Award)

W. Robitza, H. Hlavacs, Assessing the Validity of Subjective QoE Data through Rating Times and Self-Reported Confidence, 6th International Workshop on Quality of Multimedia Experience (QoMEX 2014), Singapore, 18-20 Sept. 2014.

N. Schweiger, K. Meusburger, H. Hlavacs, M. Spring, Jumru 5s - A Game Engine for Serious Games, The Fifth International Conference on Serious Games Development & Applications (SGDA 2014) 9-10 Oct 2014, Berlin, Germany.

A. Schrammel, H. Hlavacs and M. Sprung, Mind Book - A Social Network Trainer for Children with Depression, GaLA Conf 2014, Bukarest, July 2-4 2014.

L. Draschkowitz, C. Draschkowitz, H. Hlavacs, Predicting Shot Success for Table Tennis using Video Analysis and Machine Learning, 6th International Conference on Intelligent Technologies for Interactive Entertainment (INTETAIN 2014), July 9-11, 2014 Chicago, United States.

F. Kayali, G. Wallner, S. Kriglstein, G. Bauer, D. Martinek, H. Hlavacs, P. Purgathofer and R. Woelfle, A Case Study of a Learning Game about the Internet, GameDays 2014, Darmstadt, Germany, April 1-4 2014.

O. D. Kothgassner, J. X. Kafka, J. Rudyk, L. Beutl, H. Hlavacs and A. Felnhofer, Does social exclusion hurt virtually like it hurts in real life? The role of agency and social presence in the perception and experience of social exclusion, 15th International Conference on Presence (ISPR 2014), Vienna, Austria, March 17-19 2014.(Received Best Paper Award)

A. Felnhofer, T. Hetterle, M. Schmidt, L. Beutl, H. Hlavacs, I. Kryspin-Exner & Kothgassner, Challenging gender differences in physical presence: Affective states, spatial abilities and presence in a relaxing virtual park, 15th International Conference on Presence (ISPR 2014), Vienna, Austria, March 17-19 2014.

H. Hlavacs, Serious Games must look like Casual Games, Entertainment in Serious Games and Entertaining Serious Purposes Workshop at ICEC2014, 30 Sept. 2014, Sydney, Australia.

S. Buchinger, W. Robitza, M. Nezveda, E. Hotop, P. Hummelbrunner, M. C. Sack, H. Hlavacs, Evaluating Feedback Devices for Time-Continuous Mobile Multimedia Quality Assessment, Poster at 6th International Workshop on Quality of Multimedia Experience (QoMEX 2014), Singapore, 18-20 Sept. 2014.

D. Mirk, H. Hlavacs, Virtual Tourism using Live Streams from Drones, International Conference on Entertainment Computing (ICEC 2014), 1-3 Oct 2014, Sydney, Australia.

M. Cakmak, H. Hlavacs, A Need for Interactive Music Videos, International Conference on Entertainment Computing (ICEC 2014), 1-3 Oct 2014, Sydney, Australia.

K. Peters, F. Kayali, H. Hlavacs, INTERACCT: Serious Game Performance as Medical Condition Indication, 25th European Medical Informatics Conference (MIE2014), Istanbul, August 31st - September 3rd, 2014.

D. Mirk, H. Hlavacs, Using Drones for Virtual Tourism, 6th International Conference on Intelligent Technologies for Interactive Entertainment (INTETAIN 2014), July 9-11, 2014 Chicago, United States.

W. Kumbeiz, H. Hlavacs, Bass Impact DJ Studio - A music mixing software with gesture controls, 6th International Conference on Intelligent Technologies for Interactive Entertainment (INTETAIN 2014), July 9-11, 2014 Chicago, United States.

Lusilla, P., Castellano-Tejedor, C., Helf, C., Zwickl, P., Hlavacs, H., Haukkala, A., & Ravaja, N. Integrating Motivational Techniques in gamification systems for behaviour change. Poster communication presented at ICMI 2014 International Conference on Motivational Interviewing. Amsterdam, June 16-18, 2012.

2013

H. Hlavacs, Cooperative Enhancement of Position Accuracy of Unmanned Aerial Vehicles, The 11th International Conference on Advances in Mobile Computing & Multimedia (MoMM2013), Vienna, Austria, 2-4 Dec 2013.

M. Imran, H. Hlavacs, Searching in Cloud Object Storage by Using a Metadata Model, The 9th International Conference on Semantics, Knowledge & Grids (SKG2013), Beijing, China, Oct 3-4, 2013.

Y. Pitrey, H. Hlavacs, You look blocky, is everything alright? Influence of video distortions on facial expression recognition & quality, 4th International Workshop on Perceptual Quality of Systems (PQS 2013), Sept 2-4 2013, Vienna, Austria.

W. Robitza, Y.Pitrey, B. Kitzinger, H. Hlavacs, The NappingPlayer. Projective Mapping Experiments on Android Tablets, 4th International Workshop on Perceptual Quality of Systems (PQS 2013), Sept 2-4 2013, Vienna, Austria.

M. Schmidt, J. X. Kafka, O. D. Kothgassner, H. Hlavacs, L. Beutl and A. Felnhofer, Why does it always rain on me? Influence of gender and environmental factors on usability, technology related anxiety and immersion in virtual environments, 10th International conference on advances in Computers Entertainment (ACE 2013), Twente, The Netherlands, Nov. 13-15, 2013.

O. D. Kothgassner, A. Felnhofer, H. Hlavacs, L. Beutl, J. Gomm, N. Hauk, E. Kastenhofer, and I. Kryspin-Exner, Debunking differences between younger and older adults using a collaborative virtual environment, 12th International Conference on Entertainment Computing (ICEC2013), Sao Paulo, Brazil, October 16-18 2013.(Received Best Paper Award)

S.S. Masoumzadeh, H. Hlavacs, Integrating VM Selection Criteria in Distributed Dynamic VM Consolidation Using Fuzzy Q-Learning, 7th International DMTF Academic Alliance Workshop on Systems and Virtualization Management: Standards and the Cloud (SVM13), Zurich, Switzerland, Oct. 18th 2013.

O. D. Kothgassner, A. Felnhofer, L. Beutl, A.-K. Heinzle, J. Gomm, E. Kastenhofer, N. Hauk, H. Hlavacs, I. Kryspin-Exner, Geschlechtsunterschiede in der Nutzung von kollaborativen virtuellen Umwelten bei gesunden aelteren: Der Einfluss von Sozialer Praesenz, Benutzerfreundlichkeit und Technikaengstlichkeit, uDAY 2013, 2013.

S.S. Masoumzadeh, H.Hlavacs, An Intelligent and Adaptive Threshold-Based Schema for Energy and Performance Efficient Dynamic VMs Consolidation, Energy Efficiency in Large Scale Distributed Systems conference (EE-LSDS 2013). Vienna, 22-24. April 2013.

M. Imran, H. Hlavacs, Layering of the Provenance Data for Cloud Computing, In Proceedings of The 8th International Conference on Grid and Pervasive Computing (GPC 2013), Seoul Olympic Parktel, Seoul, Korea, May 9-11, 2013.

A. Janecek, D. Valerio, K.A.Hummel, F. Ricciato, H. Hlavacs, Vehicular Traffic Estimation Leveraging Location Area Updates of Mobile Phones, NetMob 2013, May 1-3, 2013, MIT, USA.

2012

A. Felnhofer, O. D. Kothgassner, L. Beutl, H. Hlavacs and I. Kryspin-Exner, Is Virtual Reality made for Men only? Exploring Gender Differences in the Sense of Presence, International Society for Presence Research Annual Conference (ISPR 2012), Oct. 24 - 26 2012, Philadelphia, Pennsylvania, USA (Received Second-Best Paper Award!).

D. Valerio, A. Janecek, K. Hummel, H. Hlavacs, F. Ricciato, B. Rainer, Incident detection from cellular network signaling, 19th ITS World Congress Vienna 2012, 22-26 Oct 2012, Vienna, Austria.

M. Imran, H. Hlavacs, Applications of Provenance Data for Cloud Infrastructure, The 8th International Conference on Semantics, Knowledge & Grids (SKG2012), Beijing, China, Oct 22-24, 2012.

M. Imran, H. Hlavacs, Provenance in the Cloud: Why and How? The Third International Conference on Cloud Computing, GRIDs, and Virtualization (CLOUD COMPUTING 2012), July 22-27, 2012 - Nice, France. (Received Best Paper Award!)

M. Imran, H. Hlavacs, Provenance Framework for the Cloud Environment (IaaS), The Third International Conference on Cloud Computing, GRIDs, and Virtualization (CLOUD COMPUTING 2012), July 22-27, 2012 - Nice, France.

H. Hlavacs, T. Treutner, Genetic Algorithms for Energy Efficient Virtualized Data Centers, 6th International DMTF Academic Alliance Workshop on Systems and Virtualization Management: Standards and the Cloud (SVM12), Las Vegas, Oct. 26, 2012.

Y. Pitrey, M. Barkowsky, R. Péon, P. Le Callet, H. Hlavacs, Influence of the source content and encoding configuration on the perceived quality for scalable video coding, Proceedings of SPIE Human Vision and Electronic Imaging XVII, Vol. 8291 (1), San Francisco, USA. Feb 1-7, 2012.

O. Kothgassner, A. Felnhofer, L. Beutl, H. Hlavacs, M. Lehenbauer, and B. Stetina, A Virtual Training Tool for Giving Talks, 11th International Conference on Entertainment Computing, Sept. 26-29 2012, Bremen, Germany. (Received Best Paper Award!)

Y. Pitrey, W. Robitza, H. Hlavacs, Instance Selection Techniques for Subjective Quality of Experience Evaluation, Third Workshop on Quality of Experience for Multimedia Content Sharing (QoEMCS), Berlin, Germany, July 4th 2012.

A. Janecek, D. Valerio, F. Ricciato, K.A.Hummel, H. Hlavacs, Cellular Data Meet Vehicular Traffic Theory: Location Area Updates and Cell Transitions for Travel Time Estimation, 14th International Conference on Ubiquitous Computing (Ubicomp 2012) , Pittsburgh, PA, USA on September 5-8, 2012.

C. Czepa, S. Buchinger, H. Hlavacs, E. Hotop, Y. Pitrey, Towards an energy-efficient attention-aware mobile video player with sensor and face detection support, accepted at the 1st IEEE WoWMoM Workshop on Video Everywhere, June 25, 2012 - San Francisco, California, USA.

H. Hlavacs, L. Beutl, Simulation of Soft-looking Facial Expressions, GAMEON Asia 2012, Ritsumeikan University, Kyoto, Japan, February 24-26, 2012. (Received Best Paper Award!)

W. Robitza, Y. Pitrey, S. Buchinger, H. Hlavacs, Made for Mobile: a video database designed for Mobile Television, Sixth International Workshop on Video Processing and Quality Metrics for Consumer Electronics (VPQM 2012), Scottsdale, Arizona, Jan 19-22, 2012.

Kothgassner, O.D., Felnhofer A., Heinzle, A.-K., Hlavacs, H., Beutl, L., Gomm, J., Glenk, L. & Kryspin-Exner, I. (2012). Kardiovaskulaere Stressreaktivitaet waehrend eines virtuellen Redetasks bei gesunden Maennern und Frauen. Posterpraesentation bei der JungwissenschafterInnen Posterausstellung an der Fakultaet fuer Psyschologie, Oesterreich, Wien, 25.06.2012 (Poster).

Baumm, E. C., Felnhofer, A., Kothgassner, O. D., Scholz, A., Kastenhofer, E., Hauk, N., Gomm, J., Beutl, L., Hlavacs, H. & Kryspin-Exner, I., Presence and technology acceptance in younger and elderly participants in a VR-Cafe scenario, 4th YR-RISE Workshop on Research for innovative solutions for the elderly, Eindhoven, Netherlands, September 24.-27. 2012 (co-located with Ambient Assisted Living Forum 2012) (Poster).

Kothgassner, O.; Felnhofer, A.; Kastenhofer, E.; Hauk, N.; Gomm, J.; et al, Das Projekt ICARUS: Information and Communicationtechnology Applications: Research on Useroriented Solutions, 1. Vernetzungstreffen des OEPIA Atlas zur Altersforschung, 2012 (Poster).

Kothgassner, O., Felnhofer, A., Kryspin-Exner, I., Hlavacs, H., Virtuelle Realität Mittels sozialer Technologie mehr Erleben - bis ins hohe Alter! Golden Age: das Reise- & Lifestylemagazin fuer die besten Jahre 20 (2012), pp. 47, 2012 (Magazine).

Felnhofer, A.; Kothgassner, O.; Kryspin-Exner, I.; Hlavacs, H., Soziale Technologien vernetzen bis ins hohe Alter, Golden Age: das Reise- & Lifestylemagazin fuer die besten Jahre, 2012 (Magazine).

H. Hlavacs, L. Beutl, A simulation for the creation of soft-looking facial expressions, The ACM 3rd International Symposium on Facial Analysis and Animation (FAA 2012), Sept. 21st, Vienna, Austria (Poster + Extended Abstract).

A. Franiak, C. Czepa, H. Hlavacs, Y. Pitrey, Streaming DirectX-Based Games on Windows, ACM Advances in Computer Entertainment (ACM ACE 2012) Conference, Nov 3-5 2012, Kathmandu, Nepal (Poster + Extended Abstract).

T. Treutner, H. Hlavacs, Service Level Management for Iterative Pre-Copy Live Migration, the 8th International Conference on Network and Service Management (CNSM 2012), 22-26 October, Las Vegas, USA (Short Paper).

2011

H. Hlavacs, T. Treutner, J.-P. Gelas, L. Lefèvre and A.-C. Orgerie, Energy consumption side-channel attack at Virtual Machines in a Cloud, accepted at International Conference on Cloud and Green Computing (CGC 2011), Sydney, Australia, Dec. 12-14 2011.

B. Klein, H. Hlavacs, An Effort based Social Diffusion Approach for Mobile Encounter Networks, Third International Conference on Computational Aspects of Social Networks (CASoN 2011), Salamanca, Spain, Oct. 19-21, 2011.

H. Hlavacs, T. Treutner, Migration of Virtual Machines: Performance and QoS, COST Action IC0804 proceedings 2011, ISBN : 978-2-917490-18-1 - EAN : 9782917490181.

H. Hlavacs, T. Treutner, Privacy Risks for Virtual Machines in a Cloud, COST Action IC0804 proceedings 2011, ISBN : 978-2-917490-18-1 - EAN : 9782917490181

H. Hlavacs, M. Nussbaumer, Optimization for Multi-Thread Data Flow Software, 8th European Performance Engineering Workshop (EPEW 2011), Borrowdale, The English Lake District, UK, 12th and 13th October 2011.

H. Hlavacs, T. Treutner, Predicting Web Service Levels During VM Live Migrations, 5th International DMTF Academic Alliance Workshop on Systems and Virtualization Management: Standards and the Cloud (SVM11), 24th October, 2011, Paris, France.

W. Robitza, S. Buchinger, H. Hlavacs, Impact of Reduced Quality Encoding on Object Identification in Stereoscopic Video, Quality of Experience for Multimedia Content Sharing (QoEMCS) at EuroITV, Lisbon, Portugal, June 29, 2011.

M. Niedermayer, N. Ali, H. de Meer, H. Hlavacs, T. Treutner, L. Lefevre, J.-P. Gelas and I. Koutsopoulos, Energy monitoring and its impact on individual user privacy, 4th Future Internet Cluster Workshop, 2011, Budapest.

M. Lehenbauer, B. Stetina, L. Glenk, O. Kothgassner, A. Felnhofer, H. Hlavacs and I. Kryspin-Exner, Play and change! Psychological interventions in (serious) games, Future and Reality of Gaming 2011(FROG11), Oct. 21-23, 2011, Vienna, Austria.

M. Niedermayer, N. Ali, H. de Meer, H. Hlavacs, T. Treutner, L. Lefevre, J.-P. Gelas and I. Koutsopoulos, Energy monitoring and its impact on individual user privacy, 4th Future Internet Cluster Workshop, 2011, Budapest.

2010

R. Weidlich, M. Nussbaumer, H. Hlavacs, Optimization Towards Consolidation and Throughput for Multi-Thread Software, 3rd International Symposium on Parallel Architectures, Algorithms and Programming (PAAP'10), Dec 18-20 2010, Dalian, Liaoning, China.

G. da Costa, H. Hlavacs, Methodology of Measurement for Energy Consumption of Application, accepted at E2GC2: Energy Efficient Grids, Clouds and Clusters Workshop, at IEEE Grid 2010 conference 25-29 October 2010 in Brussels, Belgium.

P. Hummelbrunner, S. Buchinger, W. Robitza, D. Selig, M. Nezveda, H. Hlavacs, Peer to peer Mobile TV recovery system, EuroITV 2010, Tampere, Finland, June 9-11 2010.

M. Nezveda, S. Buchinger, W. Robitza, E. Hotop, P. Hummelbrunner, H. Hlavacs, V. Baroncini, C. Delogu, Test persons for subjective video quality testing: Experts or non-experts?, QoMECS Workshop at the EuroITV 2010, Tampere, Finland, June 9-11 2010.

W. Robitza, S. Buchinger, H. Hlavacs, Acceptance of Mobile TV Channel Switching Delays, QoMEX 2010, June 21-23 2010, Trondheim, Norway.

A. Garcia, R. Weidlich, C. San Leandro, K. Hackbarth, H. Hlavacs, Approximation towards energy efficient distributed environments, SimuTools 2010, March 15-19, 2010, Malaga, Spain.

M. Sack, S. Buchinger, H. Hlavacs, Loudness and Auditory masking compensation for Mobile TV, IEEE International Symposium on Broadband Multimedia Systems and Broadcasting 2010, Shanghai, China, Mar.24-26 2010.

S. Buchinger, W. Robitza, P. Hummelbrunner, M. Nezveda, M. Sack, H. Hlavacs, Slider or glove? Proposing an alternative quality rating methodology, Fifth International Workshop on Video Processing and Quality Metrics for Consumer Electronics (VPQM), Scottsdale, Arizona, U.S.A., Jan. 13-15, 2010.

H. Hlavacs, Energieeffizienz in verteilten Systemen: Modellierung und Simulation, Nachrichtentechnisches Kolloqium, 18.5.2010, Vienna, Austria. (PP-Slides)

S. Buchinger, W. Robitza, M. Nezveda, P. Hummelbrunner, H. Hlavacs: Towards a comparable and reproducible subjective outdoor multimedia quality assessment. In Third Euro-NF IA.7.5 Workshop on Socio-Economic Issues of Networks of the Future, December, 2010.

S. Buchinger, E. Hotop, W. Robitza, H. Hlavacs, F. D. Simone, T. Ebrahimi, U. Engelke, H-J. Zepernick, M. Fiedler: Towards a gesture-based video player interface. In Third Euro-NF IA.7.5 Workshop on Socio-Economic Issues of Networks of the Future, December, 2010.

S. Buchinger, F. De Simone, H. Hlavacs, E. Hotop, T. Ebrahimi, Gesture and Touch Controlled Video Player Interface for Mobile Devices, ACM Multimedia 2010 - Human Centered Multimedia Track Short Paper, Firenze, Italy.

2009

H. Hlavacs, G. da Costa, J.-M. Pierson, Energy Consumption of Residential and Professional Switches, Computational Science and Engineering (CSE) 09, Vancouver, Canada, 2009.

A. Berl, R. Weidlich, M. Schrank, H. Hlavacs, and H. de Meer, Network Virtualization in Future Home Environments, International Workshop on Distributed Systems: Operations and Management (DSOM09) 2009.

S. Buchinger, S. Kriglstein, H. Hlavacs, A Comprehensive View on User Studies: Survey and Open Issues for Mobile TV, EuroITV 2009, Leuven, Belgium, June 3-5, 2009.

R. Mayrhofer, S. Winkler, H. Hlavacs, M. Affenzeller, and Stefan Schneider, On Structural Identification of 2D Regression Functions for In-door Bluetooth Localisation, 12th International Conference on Computer Aided Systems Theory (EuroCAST) 2009, Feb 15-20, 2009, Las Palmas, Gran Canaria, Spain.

S. Buchinger, M. Nezveda, W. Robitza, P. Hummelbrunner, H. Hlavacs, Mobile TV Coding, Demo, ConTEL 2009 workshop, June 9, 2009, Zagreb, Croatia.

2008

S. Tolic, H. Hlavacs, A Testbed for P2P Gaming using Time Warp, The Sixth Annual International Conference in Game Design and Technology (GDTW) 2008, Liverpool, UK, Nov. 12-13, 2008. (pdf)

H. Hlavacs, R. Weidlich, T. Treutner, Energy Saving in Future Home Environments, 2nd Home Networking Conference at IFIP Wireless Days, Dubai, Nov. 24-27, 2008. (pdf)

A. Hess, M. Nussbaumer, H. Hlavacs, K.A. Hummel, Automatic Adaptation and Analysis of SIP Headers using Decision Trees, in Principles, Systems and Applications of IP Telecommunications. Services and Security for Next Generation Networks, Second International Conference, IPTComm 2008, Heidelberg, Germany, July 1-2, 2008. (pdf)

H. Hlavacs, K.A. Hummel, A. Hess, M. Nussbaumer, Babel-SIP: Self-learning SIP Message Adaptation for Increasing SIP-Compatibility, 1st IEEE Workshop on Automated Network Management, in conjunction with IEEE INFOCOM 2008, Phoenix, Arizona, April 13-18, 2008. (pdf)

A.E. García, A. Berl, K.A. Hummel, R. Weidlich, K.D. Hackbarth, H. de Meer, H. Hlavacs, A.N. Houyou, An Economical Cost Model for Fair Resource Sharing in Virtual Home Environments, Proceedings of the EuroNGI conference 2008, Krakow, Poland.

S. Buchinger, H. Hlavacs, QoE von mobilen Mulitmedia Anwendungen, IT und Telecom Symposium 2008, Vienna, Oct. 9-10, 2008. (in German)

S. Buchinger, H. Hlavacs, A Low Start for Mobile Video Patching, Workshop on Socio-Economic Issues of NGI 2008, Karlskrona, Sweden, May 27-28 2008.

S. Buchinger, H.Hlavacs, QoE of Mobile Multimedia Services, EuroITV 2008 Doctoral Colloquium, Salzburg, 2008.

2007

H. Hlavacs, K.A. Hummel, R. Weidlich, A. Houyou, A. Berl, H. de Meer, Energy Efficiency in Future Home Environments: A Distributed Approach, Proceedings of the 1st Home Networking Conference, Paris, France, Dec. 10-12, 2007. (pdf)

J. Zottl, W.N. Gansterer, H. Hlavacs, A Hierarchical Two-Tier Information Management Architecture for Mobile Ad-Hoc Grid Environments, Seventh IEEE International Symposium on Cluster Computing and the Grid and Workshops (CCGrid 2007), Rio de Janeiro, Brazil, May 14-17 2007.

A.C. Adrowitzer, H. Hlavacs, K.A. Hummel, Throughput Measurements of IEEE 802.11g-based Ad-hoc Networks in Outdoor Scenarios, Proceedings 4th International Workshop on Intelligent Transportation (WIT 2007), Hamburg, March 20-21, 2007.

T. Hoeher, M. Petraschek, H. Hlavacs, W. Gansterer, A Man-in-the-Middle Attack on ZRTP, Demonstration presented at IPTComm 2007, New York, July 19-20 2007.

H. Hlavacs, W. Gansterer, J. Zottl, M. Petraschek, T. Hoeher, Enhancing ZRTP by using Computational Puzzles, Workshop on Socio-Economic Issues of NGI, Santander, June 28-29 2007.

T. Hoeher, M. Petraschek, O. Jung, H. Hlavacs, W. Gansterer, A Man-in-the-Middle Attack on ZRTP, Workshop on Socio-Economic Issues of NGI, Santander, June 28-29 2007.

2006

H. Hlavacs, A 2D Car Physics Model based on Ackermann Steering, The Fourth Annual International Conference in Game Design and Technology 2006 (GDTW 2006), Liverpool, UK, Nov. 15-16, 2006. (pdf)

A. Huber, M. Paulhart, C. Kloiber, H. Hlavacs, Darwin's Dream, The Fourth Annual International Conference in Game Design and Technology 2006 (GDTW 2006), Liverpool, UK, Nov. 15-16, 2006. (pdf)

S. Buchinger, H. Hlavacs, Influence of the frame rate onto the perceived QoS of small videos, EuroNGI IA8.6 Workshop on Socio-Economic Aspects of Next Generation Internet, Lyngby, Denmark, Oct. 9-10 2006.

K.A. Hummel, A.C. Adrowitzer, H. Hlavacs, Measurements of IEEE 802.11g-based Ad-hoc Networks in Motion, Third EuroNGI Workshop on Wireless and Mobility, Sitges, Spain, June 7-9, 2006.

H. Hlavacs, F. Gelies, D. Blossey, B. Klein, A Ubiquitous Zoo Guide, in Proceedings EuroIMSA 2006, Innsbruck, Austria, Feb. 2006. (pdf)

2005

H. Hlavacs, F. Gelies, D. Blossey, B. Klein, A Ubiquitous and Interactive Zoo Guide System, in Proceedings of Intelligent Technologies for Interactive Entertainment (INTETAIN) 2005, Madonna di Campiglio, Italy, Nov 30-Dec 2, 2005.

W.N. Gansterer, H. Hlavacs, M. Ilger, P. Lechner, J. Strauß, Token buckets for outgoing SPAM prevention, Proceedings of Communication, Network and Information Security (CNIS) 2005, Phoenix, USA, Nov 14-16, 2005.

A. Janecek, H. Hlavacs, Programming Interactive Real-Time Games over WLAN for Pocket PCs with J2ME and .NET CF, Proceedings of Netgames 2005, New York, Oct 11-12, 2005. (pdf)

B. Klein, H. Hlavacs, Scenarios for Mobile Community Support, Wireless Systems and Network Architectures in Next Generation Internet: Second International Workshop of the Euro-Ngi Network of Excellence (Matteo Cesana and Luigi Fratta, eds.), Villa Vigoni, Italy, July 13-15, 2005. Springer Berlin Heidelberg (LNCS 3883), May 2006.

B. Klein, H. Hlavacs, Using Rich Contextual Clues to Support Group Dynamics in Ubiquitous Communities, European Conference on Computer-Supported Cooperative Work (ECSCW 2005), Paris, France, 2005.

B. Klein, H. Hlavacs, A Seamless Mobile Community Support System, Pervasive 2005 Doctoral Colloquium, Munich, Germany, May 2005.

2004

H. Hlavacs, K.A. Hummel, A. Albl, S. Frandl, J. Kirchler, B. Ilic, Effects of WLAN QoS Degradation on Streamed MPEG4 Video Quality, Dagstuhl-Workshop Mobility and Wireless in Euro-NGI, Schloss Dagstuhl, Germany, June 7-9, 2004.

H. Hlavacs, Content Delivery Improvement by Satellite, Interworking 2004, Nov. 29-Dec.1, Ottawa, Canada, 2004. (pdf)

K. Hummel, R. El-Berry, B. Klein, H. Hlavacs, Tracking Physical and Digital Learning Interactions in Ubiquitous Computing Environments, 7th International Conference on Interactive Computer aided Learning (ICL 2004), Sept. 29-Oct. 1, Villach, 2004.

2003

L. Duquerroy, M. Haddad, H. Hlavacs, S. Josset, C. Lafouge, J. Ribeiro, Bypassing the Internet with the CODIS Content Delivery Network, in Communication, Network, and Information Security (CNIS 2003), Dec. 10-12, New York, USA.

H. Hlavacs, A. Kumar, S. Raghavan, S. Leopold, A Doubly-Adaptive Algorithm for Globally Adaptive Numerical Integration using Gauss-Kronrod Formulas, Numerical Analysis 2003 (NA03), Dundee, GB, 2003.

H. Hlavacs, G. Aschenbrenner, How to Evaluate the Quality of Service of Satellite Based Content Delivery Networks. Proceedings of the Applied Informatics 2003, Innsbruck, Austria, Feb. 10-13, 2003. (pdf)

H. Hlavacs, Simulating the Performance of ScaLAPACK with Clue. Proceedings of the Mathmod 2003, Vienna, Austria, Feb. 2003. (pdf)

K.A. Hummel, H. Hlavacs, Anytime, Anywhere Learning Behavior Using a Web-Based Platform for a University Lecture. Proceedings of the SSGRR 2003 Winter Conference, L'Aquila, Italy, Jan. 6-12, 2003. (pdf)

2002

K. A. Hummel, H. Hlavacs, H. Weissenböck, Web Based Online Learning in Technically Equipped and Mobile Student Societies: A Case Study. In Proceedings of the Interactive Computer Aided Learning (ICL) Workshop 2002, Villach, Austria, 2002. (pdf)

H. Hlavacs, G. Aschenbrenner, E. Hotop, A. Baijal, A. Garg, Evaluating the Quality of Service for a Satellite Based Content Delivery Network, in Proceedings of the SSGRR 2002, L'Aquila, Italy, July 29-August 4, 2002. (pdf)

H. Hlavacs, A. Kamra, M. Bansal, G. Haring, Modelling Resource Management for Multi-Class Traffic in Mobile Cellular Networks, Hawaii International Conference on System Sciences (HICSS) 35, Big Island, Hawaii, January 2002. (pdf)

2001

H. Hlavacs, Broadband Wireless Access, GIT-Fachtagung Breitbandige Zugangstechnologien, Siemens Forum Wien, 14. November 2001. In German.

H. Hlavacs, C. Kurz, G. Kotsis, Workload Generation by Modelling User Behaviour in an ISP subnet. In Proceedings of the International Symposium on Telecommunications (IST2001), Teheran, 2001. (pdf)

D. F. Kvasnicka, H. Hlavacs, C.W. Ueberhuber, Simulating Parallel Program Performance with CLUE. In 2001 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS), San Diego (M.S. Obaidat, F. Davoli, eds.). The Society for Modeling and Simulation International 2001, pp. 140-149. (zipped pdf)

H. Hlavacs, G. Haring, On Degrading Best Effort Calls in Future Cellular Mobile Networks, In Proceedings of the International Symposium on 3rd Generation Infrastructure and Services (3GIS), 2001. (zipped pdf)

D.F. Kvasnicka, H. Hlavacs, C.W. Ueberhuber, Cluster Configuration Aided by Simulation. In Computational Science - ICCS 2001, Proceedings, Part I, (Vassil N. Alexandrov , Jack J. Dongarra , Benjoe A. Juliano , Rene S. Renner and C. J. Kenneth Tan, eds.). Springer-Verlag Berlin Heidelberg New York Tokyo 2001, pp. 243-252. (pdf)

2000

H. Hlavacs, E. Hotop, G. Kotsis, Workload Generation by Modeling User Behavior, OPNETWORK 2000. Washington, DC, Aug. 2000. http://www.opnet.com/opnetwork2000/home.html
This paper received a Distinguished Paper Award (picture 1, picture 2) ! (zipped pdf and postscript), (zipped MS Power Point presentation)

H. Hlavacs, D.F. Kvasnicka, C.W. Ueberhuber, CLUE - A tool for Cluster Evaluation, Distributed and Parallel Systems DAPSYS 2000 (P. Kacsuk, G. Kotsis, Eds.), Kluwer Academic Publishers, Boston, 2000, pp. 61-64. (zipped pdf and postscipt)

H. Hlavacs, D.F. Kvasnicka, C.W. Ueberhuber, CLUE - Cluster Evaluation, 1st International AURORA Conference 2000, AURORA TR2000-01, January 2000. (zipped pdf and postscipt)

1999

H. Hlavacs, G. Kotsis, Modeling User Behavior: A Layered Approach. In MASCOTS'99, IEEE Computer Society, Los Alamitos, California, 1999, pp. 218-225. (zipped pdf and postscipt)

H. Hlavacs, C.W. Ueberhuber, Simulating Load Balancing on Heterogeneous Workstation Clusters, in ACPC'99, Springer Berlin, 1999. (zipped pdf and postscript)

Demonstrations / Talks

A. Felnhofer, O. D. Kothgassner, L. Beutl, H. Hlavacs & Ilse Kryspin-Exner, A Gender Gap in Presence? Looking at men.s and women.s experiences in virtual environments, Cyberspace12: 10th International Conference, Brno (CZ), 30.11.-01.12. 2012 (Talk).

O. D. Kothgassner, A. Felnhofer, L. M. Glenk, A. K. Heinzle, L. Beutl, H. Hlavacs, J. Gomm, R. Palme & I. Kryspin-Exner (2012), Cardiovascular and salivary cortisol stress response and recovery to a virtual and real life public speaking task, Cyberspace12: 10th International Conference, Brno (CZ), 30.11.-01.12 2012 (Talk).

Technical Reports

H. Hlavacs, G. Da Costa, J.-M. Pierson, Energy Consumption of Residential and Professional Switches, Technical report no IRIT//RR.2009-7.FR, March 12, 2009

H. Hlavacs, A. Kumar, S. Raghavan, S. Leopold, C. Ueberhuber, A Doubly-Adaptive Algorithm for Gauss-Kronrod Quadrature, AURORA Technical Report TR2003-XX, 2003.

H. Hlavacs, F. Kaltenberger, C. Ueberhuber, Evolutionsstrategien zum Auffinden von Quadraturformeln, AURORA Technical Report TR2003-15, June 2003.

H. Hlavacs, C.W. Ueberhuber, High-Performance Computers - Current State and Prospective Evolution, AURORA Technical Report TR2001-18, November 2001.

H. Hlavacs, C.W. Ueberhuber, Performance Evaluation by Simulation, AURORA Technical Report TR2001-15, November 2001.

H. Hlavacs, C.W. Ueberhuber, Improving the Accuracy of Numerical Integration, AURORA Technical Report TR2001-06, July 2001.

H. Hlavacs, C.W. Ueberhuber, Numerical Integration and Knowledge-Based Control, AURORA Technical Report AuR 00-18, December 2000. (gzipped postscript)

H. Hlavacs, C.W. Ueberhuber, Integrating Oscillating Functions, AURORA Technical Report AuR 00-17, November 2000. (gzipped postscript)

H. Hlavacs, D.F. Kvasnicka, C.W. Ueberhuber, CLUE - Cluster Evaluation, AURORA Technical Report AuR 00-05, 2000. (gzipped postscript)

H. Hlavacs, G. Kotsis, C. Steinkellner, Traffic Source Modeling, Technical Report No. TR-99101, Institute for Appl. Comp. Science and Inf. Systems, University of Vienna. (pdf)

H. Hlavacs, D.F. Kvasnicka, C.W. Ueberhuber, MISS-PVM Extension for Simulating Dynamic Load Balancing, AURORA Technical Report AuR 99-02, 1999. (gzipped postscript)

H. Hlavacs, C.W. Ueberhuber, Dynamic Load Balancing on Heteregenous Workstation Clusters with Irregularly Fluctuating Capacity, AURORA Technical Report AuR 98-11, 1998. (gzipped postscript)

Seminar Talks

Kernelprogrammierung mit OPNET, ARGESIM Seminar S65 "Diskrete Simulation mit Taylor ED - Netzwerksimulation mit OPNET", 7. Juni 2000. (zipped powerpoint slides)

Haben Computeralgebrasysteme immer recht?, ARGESIM Seminar S46 "Computer Algebra Systeme (CASe)", 21. April 1998. (gzipped postscript)