Professor Sumi Helal

Chair in Digital Health

Research Overview

Professor Helal is Chair in Digital Health where he leads interdisciplinary research and initiatives in digital health in both the School of Computing and Communications (Faculty of Science and Technology) and the Division of Health Research (Faculty of Health and Medicine). Before joining Lancaster, he was a Computer & Information Science and Engineering Professor at the University of Florida, USA, and Director of its Mobile and Pervasive Computing Laboratory. He co-founded and directed the Gator Tech Smart House – a real-world deployment project that aimed at identifying key barriers and opportunities to make the Smart Home concept a common place (creating the “Smart Home in a Box” concept). His active areas of research focus on architectural and programmability aspects of the Internet of Things, and on pervasive/ubiquitous systems and their human-centric applications with special focus on smart spaces, proactive health/wellness, patient empowerment and e-coaching, and assistive technology in support of personal health, aging, disabilities, and independence. Professor Helal currently serves as the Editor-in-Chief of IEEE Computer, the Computer Society’s flagship and premier publication. He also currently serves as member of the Board of Governors of the IEEE Computer Society. He is inventor or co-inventor on 9 published US patents, and author or co-author of over 290 publications including IEEE/ACM transactions and other journals, conferences, workshops, books, edited books, and book chapters. Professor Helal is a Boilermaker (Ph.D., Purdue University, class of 1991) and is a Fellow of the IEEE.

Interoperable communication framework for bridging RESTful and topic-based communication in IoT
Khaled, A.E., Helal, S. 2/01/2018 In: Future Generation Computer Systems.
Journal article

Demo: Atlas thing architecture - Enabling mobile apps as things in the IoT: 23rd Annual International Conference on Mobile Computing and Networking, MobiCom 2017
Helal, S., Khaled, A.E., Gutta, V. 16/10/2017 In: MobiCom '17 Proceedings of the 23rd Annual International Conference on Mobile Computing and Networking. New York : ACM p. 480-482. 3 p. ISBN: 9781450349161.
Conference contribution

Blueprint Flow: A Declarative Service Composition Framework for Cloud Applications
Lee, C., Wang, C., Kim, E., Helal, S. 4/09/2017 In: IEEE Access. 5, p. 17634-17643. 10 p.
Journal article

High fidelity simulation and visualization of activities of daily living in Persim 3D
Liu, S., Helal, S., Lee, J.W., B., A., H., A., M., M. 12/08/2017 In: International Conference on Smart Homes and Health Telematics ICOST 2017. Cham : Springer 13 p. ISBN: 9783319661872. Electronic ISBN: 9783319661889.
Conference contribution

Computer's 50th anniversary
Helal, S. 5/01/2017 In: Computer. 50, 1, 4 p.
Editorial

Automatic agent generation for IoT-based smart house simulator
Lee, W., Cho, S., Chu, P., Vu, H., Helal, S., Song, W., Jeong, Y., Cho, K. 12/10/2016 In: Neurocomputing. 209, p. 14-24. 11 p.
Journal article

VM capacity-aware scheduling within budget constraints in IaaS clouds
Thanasias, V., Lee, C., Hanif, M., Kim, E., Helal, S. 8/08/2016 In: PLoS ONE. 11, 8, 21 p.
Journal article

A Context-Driven Worker Selection Framework for Crowd-Sensing
Wang, J., Wang, Y., Helal, S., Zhang, D. 1/03/2016 In: International Journal of Distributed Sensor Networks. 12, 3
Journal article

2016 Outlook: Humans in the Technology Loop
Helal, S. 2016 In: Computer. 49, 1, 3 p.
Editorial

Cicero: Middleware for developing persuasive mobile applications
D’Aloia, A., Lelli, M., Lee, D., Helal, S., Bellavista, P. 2016 In: 11th International Conference on Persuasive Technology, PERSUASIVE 2016. Cham : Springer p. 137-149. 13 p. ISBN: 9783319315096 . Electronic ISBN: 9783319315102.
Conference contribution

Inferring contexts from human activities in smart spaces
Lee, J., Helal, S. 2016 In: 29th International Florida Artificial Intelligence Research Society Conference, FLAIRS 2016. Palo Alto : AAAI p. 695-700. 6 p. ISBN: 9781577357568.
Conference contribution

Persim 3D: Context-Driven Simulation and Modeling of Human Activities in Smart Spaces
Lee, J., Cho, S., Liu, S., Cho, K., Helal, S. 10/2015 In: IEEE Transactions on Automation Science and Engineering. 12, 4, p. 1243-1256. 14 p.
Journal article

However You Like It: Computer's Enhanced Digital Format or Affordable Print Option
Helal, S. 09/2015 In: Computer. 48, 9, 1 p.
Editorial

WSelector: A multi-scenario and multi-view worker selection framework for crowd-sensing
Wang, J., Helal, S., Wang, Y., Zhang, D., J., M., A., L., H., N., L.T., Y. 10/08/2015 In: Ubiquitous Intelligence and Computing and 2015 IEEE 12th Intl Conf on Autonomic and Trusted Computing and 2015 IEEE 15th Intl Conf on Scalable Computing and Communications and Its Associated Workshops (UIC-ATC-ScalCom), 2015 IEEE 12th Intl Conf on. IEEE p. 54-61. 8 p. ISBN: 9781467372121. Electronic ISBN: 9781467372114.
Conference contribution

Analyzing activity recognition uncertainties in smart home environments
Kim, E., Helal, S., Nugent, C., Beattie, M. 08/2015 In: ACM Transactions on Intelligent Systems and Technology. 6, 4
Journal article

Activity playback modeling for smart home simulation
Liu, S., Helal, S., Lee, J. 30/05/2015 In: 13th International Conference on Smart Homes and Health Telematics, ICOST 2015. Cham : Springer 11 p. ISBN: 9783319193113.
Conference contribution

Smart spaces
Helal, S., Tarkoma, S. 04/2015 In: IEEE Pervasive Computing. 14, 2, 2 p.
Editorial

An optimization framework for cloud-sensor systems: 2014 6th IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2014
Xu, Y., Helal, S. 2015 In: Cloud Computing Technology and Science (CloudCom), 2014 IEEE 6th International Conference on. IEEE p. 38-45. 8 p. Electronic ISBN: 9781479940936.
Conference contribution

Enabling elastic services for OSGi-based cloud platforms
Kim, D., Lee, C., Helal, S. 2015 In: 7th International Conference on Ubiquitous and Future Networks, ICUFN 2015. IEEE p. 407-409. 3 p. Electronic ISBN: 9781479989935.
Conference contribution

SmartE'15: The 2nd international workshop on smart environments: Closing the loop, 2015 - Welcome and committees: Welcome message from the workshop chairs
Holder, L., Helal, S. 2015
Other chapter contribution

Sustaining Computer's impact and adapting to change
Helal, S. 2015 In: Computer. 48, 1, 3 p.
Editorial

On detection and tracking of variant phenomena clouds
Thai, M., Tiwari, R., Bose, R., Helal, S. 01/2014 In: ACM Transactions on Sensor Networks. 10, 2, 33 p.
Journal article

A formal modeling for exceptions in context-aware systems
Yoon, T., Choi, J., Cho, E., Helal, S., C., S., B., M., C.K., C., Y., G., K., Y., A., H., Y., O., M., M. 2014 In: 38th Annual IEEE Computer Software and Applications Conference Workshops, COMPSACW 2014. IEEE p. 734-739. 6 p. Electronic ISBN: 9781479935789.
Conference contribution

Application caching for cloud-sensor systems
Xu, Y., Helal, S. 2014 In: MSWiM '14 Proceedings of the 17th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems. New York : ACM p. 303-306. 4 p. ISBN: 9781450330305.
Conference contribution

Budget-aware task scheduling in the cloud
Thanasias, V., Lee, C., Helal, S. 2014 In: 6th International Conference on Ubiquitous and Future Networks, ICUFN 2014. IEEE p. 309-310. 2 p. ISBN: 9781479934959. Electronic ISBN: 9781479934942.
Conference contribution

Context activity selection and scheduling in context-driven simulation
Lee, J., Helal, S., Sung, Y., Cho, K. 2014 In: DEVS '14 Proceedings of the Symposium on Theory of Modeling & Simulation - DEVS Integrative. San Diego : Society for Computer Simulation International p. 60-67. 8 p.
Conference contribution

Palantir: Crowdsourced Newsification Using Twitter
Raj, P., Helal, S. 2014 In: Ubiquitous Intelligence and Computing, 2014 IEEE 11th Intl Conf on and IEEE 11th Intl Conf on and Autonomic and Trusted Computing, and IEEE 14th Intl Conf on Scalable Computing and Communications and Its Associated Workshops (UTC-ATC-ScalCom). IEEE p. 220-227. 8 p. Electronic ISBN: 9781479976461.
Conference contribution

A context-driven approach to scalable human activity simulation
Lee, J.W., Helal, S., Sung, Y., Cho, K. 2013 In: SIGSIM PADS '13 Proceedings of the 1st ACM SIGSIM Conference on Principles of Advanced Discrete Simulation. New York : ACM p. 373-378. 6 p. ISBN: 9781450319201.
Conference contribution

An integrated formal model for context-Aware systems
Cho, E., Yoon, T., Choi, J., Paik, J., Helal, S. 2013 In: Computer Software and Applications Conference Workshops (COMPSACW), 2013 IEEE 37th Annual. IEEE p. 163-168. 6 p. Electronic ISBN: 9781479921591.
Conference contribution

Assessing behavioral responses in persuasive ubiquitous systems
Lee, D., Helal, S., Sung, Y. 2013 In: nternational Conference on Smart Homes and Health Telematics. Berlin : Springer p. 176-186. 11 p. ISBN: 9783642394690 .
Conference contribution

Bayesian-based scenario generation method for human activities
Sung, Y., Helal, S., Lee, J.W., Cho, K. 2013 In: SIGSIM PADS '13 Proceedings of the 1st ACM SIGSIM Conference on Principles of Advanced Discrete Simulation. New York : ACM p. 147-157. 11 p. ISBN: 9781450319201.
Conference contribution

Context-driven control algorithms for scalable simulation of human activities in smart homes
Lee, J., Helal, S., Sung, Y., Cho, K. 2013 In: Ubiquitous Intelligence and Computing, 2013 IEEE 10th International Conference on and 10th International Conference on Autonomic and Trusted Computing (UIC/ATC). IEEE p. 285-292. 8 p. Electronic ISBN: 9781479924820.
Conference contribution

Dynamic parameter filling for semantic exceptions in context-aware systems
Cho, E., Choi, J., Helal, S. 2013 In: 10th IEEE International Conference on Ubiquitous Intelligence and Computing, UIC 2013 and 10th IEEE International Conference on Autonomic and Trusted Computing, ATC 2013. IEEE p. 293-300. 8 p. Electronic ISBN: 9781479924820.
Conference contribution

From activity recognition to situation recognition
Lee, D., Helal, S. 2013 In: International Conference on Smart Homes and Health Telematics. Berlin : Springer p. 245-251. 7 p. ISBN: 9783642394690 .
Conference contribution

Fuzzy logic based activity life cycle tracking and recognition
Kim, E., Helal, S. 2013 In: Inclusive Society: Health and Wellbeing in the Community, and Care at Home. Berlin : Springer p. 252-258. 7 p. ISBN: 9783642394690.
Conference contribution

General Chair's welcome message
Helal, S. 2013 In: MobiCom'13 The 19th Annual International Conference on Mobile Computing and Networking. New York : ACM
Conference contribution

Spaceify: a client-edge-server ecosystem for mobile computing in smart spaces
Savolainen, P., Helal, S., Reitmaa, J., Kuikkaniemi, K., Jacucci, G., Rinne, M., Turpeinen, M., Tarkoma, S., SIGMOBILE, A. 2013 In: MobiCom '13 Proceedings of the 19th annual international conference on Mobile computing & networking. New York : ACM p. 211-213. 3 p. ISBN: 9781450319997.
Conference contribution

Exploiting whole-network mobility for mobile service discovery
Lee, C., Helal, S., Kim, E., Lee, W. 11/2012 In: Information. 15, 11 B, p. 5197-5216. 20 p.
Journal article

Exploiting visual quasi-periodicity for real-time chewing event detection using active appearance models and support vector machines
Cadavid, S., Abdel-Mottaleb, M., Helal, S. 08/2012 In: Personal and Ubiquitous Computing. 16, 6, p. 729-739. 11 p.
Journal article

System-wide support for safety in pervasive spaces
Chen, C., Helal, S. 06/2012 In: Journal of Ambient Intelligence and Humanized Computing. 3, 2, p. 113-123. 11 p.
Journal article

3D modeling and simulation of human activities in smart spaces
Helal, S., Cho, K., Lee, W., Sung, Y., Lee, J., Kim, E. 2012 In: Ubiquitous Intelligence & Computing and 9th International Conference on Autonomic & Trusted Computing (UIC/ATC), 2012 9th International Conference on. IEEE p. 112-119. 8 p. ISBN: 9781467330848.
Conference contribution

An intermediate language for semantic exceptions in context-aware systems
Cho, E., Helal, S. 2012 In: 36th IEEE Annual International Computer Software and Applications Conference, COMPSAC 2012. IEEE p. 364-365. 2 p. ISBN: 9781467319904. Electronic ISBN: 9780769547367.
Conference contribution

Message from the UIC 2012 General Chairs
Apduhan, B., Helal, S., Hsu, C. 2012
Other chapter contribution

Ontology Design and Implementation for RFID services
Byun, Y., Kang, M., Helal, S. 2012 In: 25th International Conference on Computer Applications in Industry and Engineering, CAINE 2012 and the 4th International Symposium on Sensor Network and Application, SNA 2012. Curran Associates, Inc. p. 47-50. 4 p. ISBN: 9781622764761.
Conference contribution

Participatory and persuasive telehealth
Lee, D., Helal, S., Anton, S., De Deugd, S., Smith, A. 2012 In: Gerontology. 58, 3, p. 269-281. 13 p.
Journal article

Toward a collaboration model for smart spaces
Chen, C., Helal, S., De Deugd, S., Smith, A., Chang, C. 2012 In: Software Engineering for Sensor Network Applications (SESENA), 2012 Third International Workshop on. IEEE p. 37-42. 6 p. ISBN: 9781467317894. Electronic ISBN: 9781467317931.
Conference contribution

Toward an ecosystem for developing and programming assistive environments
Helal, S., Chen, C., Kim, E., Bose, R., Lee, C. 2012 In: Proceedings of the IEEE . 100, 8, p. 2489-2504. 16 p.
Journal article

Toward efficient detection of semantic exceptions in context-aware systems
Cho, E., Helal, S. 2012 In: Ubiquitous Intelligence & Computing and 9th International Conference on Autonomic & Trusted Computing (UIC/ATC), 2012 9th International Conference on. IEEE p. 826-831. 6 p. ISBN: 9781467330848.
Conference contribution

A device-centric approach to a safer Internet of Things
Chen, C., Helal, S. 2011 In: NoME-IoT '11 Proceedings of the 2011 international workshop on Networking and object memories for the internet of things. New York : ACM p. 1-6. 6 p. ISBN: 9781450309295.
Conference contribution

A situation-based exception detection mechanism for safety in pervasive systems
Cho, E., Helal, S. 2011 In: 11th IEEE/IPSJ International Symposium on Applications and the Internet, SAINT 2011. IEEE p. 196-201. 6 p. ISBN: 9781457705311. Electronic ISBN: 9780769544236.
Conference contribution

Adaptive push-pull protocols for P2P-based video streaming
Jo, D., Helal, S., Kim, E., Lee, W., Lee, C. 2011 In: IEICE Transactions on Communications. E94-B, 10, p. 2759-2762. 4 p.
Journal article

An optimal algorithm for coverage hole healing in hybrid sensor networks
Nguyen, D., Nguyen, N., Thai, M., Helal, S. 2011 In: 7th International Wireless Communications and Mobile Computing Conference, IWCMC 2011. IEEE p. 494-499. 6 p. ISBN: 9781424495399. Electronic ISBN: 9781424495382.
Conference contribution

Assurance-oriented activity recognition
Kim, E., Helal, S., Nugent, C., Lee, J. 2011 In: SAGAware '11 Proceedings of the 2011 international workshop on Situation activity & goal awareness. New York : ACM p. 15-24. 10 p. ISBN: 9781450309264.
Conference contribution

IT footprinting-groundwork for future smart cities
Helal, S. 2011 In: Computer. 44, 6, p. 30-31. 2 p.
Journal article

Modeling human activity semantics for improved recognition performance
Kim, E., Helal, S. 2011 In: 8th International Conference on Ubiquitous Intelligence and Computing, UIC 2011. Berlin : Springer p. 514-528. 15 p. ISBN: 9783642236402 . Electronic ISBN: 9783642236419.
Conference contribution

Optimizing push/pull envelopes for energy-efficient cloud-sensor systems
Xu, Y., Helal, S., Thai, M., Schmalz, M., SIGSIM, A. 2011 In: MSWiM '11 Proceedings of the 14th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems. New York : ACM p. 17-26. 10 p. ISBN: 9781450308984.
Conference contribution

Persim-simulator for human activities in pervasive spaces
Helal, S., Lee, J., Hossain, S., Kim, E., Hagras, H., Cook, D. 2011 In: Intelligent Environments (IE), 2011 7th International Conference on. IEEE p. 192-199. 8 p. ISBN: 9781457708305.
Conference contribution

Revisiting human activity frameworks: Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering
Kim, E., Helal, S. 2011 In: International Conference on Sensor Systems and Software S-CUBE 2010. Berlin : Springer p. 219-234. 16 p. ISBN: 9783642235825. Electronic ISBN: 9783642235832.
Conference contribution

The Landscape of Pervasive Computing Standards
Helal, S. 06/2010 San Rafael, Calif. : Morgan and Claypool. 101 p. ISBN: 9781598299267.
Book

Human activity recognition and pattern discovery
Kim, E., Helal, S., Cook, D. 01/2010 In: IEEE Pervasive Computing. 9, 1, p. 48-53. 6 p.
Journal article

A fuzzy based verification agent for the Persim human activity simulator in Ambient Intelligent Environments
Elfaham, A., Hagras, H., Helal, S., Hossain, S., Lee, J., Cook, D. 2010 In: 2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010. IEEE ISBN: 9781424469192. Electronic ISBN: 9781424469215.
Conference contribution

A mobile-cloud collaborative traffic lights detector for blind navigation
Angin, P., Bhargava, B., Helal, S. 2010 In: 11th IEEE International Conference on Mobile Data Management, MDM 2010. IEEE p. 396-401. 6 p. ISBN: 9781424470754.
Conference contribution

An action-based behavior model for persuasive telehealth
Lee, D., Helal, S., Johnson, B. 2010 In: Aging Friendly Technology for Health and Independence. ICOST 2010. . Berlin : Springer p. 121-129. 9 p. ISBN: 3642137776 , 9783642137778. Electronic ISBN: 9783642137785.
Conference contribution

Improved impact-echo approach for non-destructive testing and evaluation
Zhang, R., Olson, L., Seibi, A., Helal, S., Khalil, A., Rahim, M. 2010 In: 3rd WSEAS International Conference on Sensors and Signals, SENSIG'10, 3rd WSEAS International Conference on Materials Science, MATERIALS'10. p. 139-144. 6 p.
Conference contribution

Localized energy efficient detection and tracking of dynamic phenomena
Tiwari, R., Thai, M., Helal, S. 2010 In: 53rd IEEE Global Communications Conference, GLOBECOM 2010. IEEE ISBN: 9781424456369. Electronic ISBN: 9781424456383.
Conference contribution

Panel description: towards new roles and system architecture supporting the full life cycle of smart spaces
Helal, S. 2010 In: 34th Annual IEEE International Computer Software and Applications Conference, COMPSAC 2010. IEEE p. 26. 1 p. ISBN: 9781424475124. Electronic ISBN: 9780769540856.
Conference contribution

Reactive programming optimizations in pervasive computing
Chen, C., Xu, Y., Li, K., Helal, S. 2010 In: 2010 10th Annual International Symposium on Applications and the Internet, SAINT 2010. IEEE p. 96-104. 9 p. ISBN: 9781424475261. Electronic ISBN: 9781424475278.
Conference contribution

Sensor-aware adaptive push-pull query processing in wireless sensor networks
Bose, R., Helal, S. 2010 In: 2010 6th International Conference on Intelligent Environments, IE 2010. IEEE p. 243-248. 6 p. ISBN: 9781424478361.
Conference contribution

The making of a dataset for smart spaces
Kim, E., Helal, S., Lee, J., Hossain, S. 2010 In: International Conference on Ubiquitous Intelligence and Computing, UIC 2010. Berlin : Springer p. 110-124. 15 p. ISBN: 3642163548, 9783642163548. Electronic ISBN: 9783642163555.
Conference contribution

Toward a programming model for safer pervasive spaces
Chen, C., Helal, S. 2010 In: Symposia and Workshops Held in Conjunction with the 7th International Conference on Ubiquitous Intelligence and Computing, UIC 2010 and the 7th International Conference on Autonomic and Trusted Computing, ATC 2010. IEEE p. 52-57. 6 p. ISBN: 9781424490431.
Conference contribution

University-industry synergy: An eclectic dialog for revised relationships
Helal, S. 09/2009 In: Computer. 42, 9, p. 88-89. 2 p.
Journal article

Device integration in SODA using the device description language
Chen, C., Helal, S. 20/07/2009 In: 2009 9th Annual International Symposium on Applications and the Internet, SAINT 2009. IEEE p. 100-106. 7 p. ISBN: 9781424447763.
Conference contribution

Assistive environments for successful aging
Helal, S., King, J., Bose, R., El-Zabadani, H., Kaddourah, Y. 31/03/2009 In: Advanced Intelligent Environments. Boston : Springer p. 1-26. 26 p. ISBN: 9780387764849. Electronic ISBN: 9780387764856.
Chapter

Fault-resilient pervasive service composition
Yang, H., Bose, R., Helal, S., Xia, J., Chang, C. 31/03/2009 In: Advanced Intelligent Environments. Boston : Springer p. 195-223. 29 p. ISBN: 9780387764849. Electronic ISBN: 9780387764856.
Chapter

Adaptive wireless thin-client model for mobile computing
Al-Turkistany, M., Helal, S., Schmalz, M. 01/2009 In: Wireless Communications and Mobile Computing. 9, 1, p. 47-59. 13 p.
Journal article

Algorithms for the detection of chewing behavior in dietary monitoring applications
Schmalz, M., Helal, S., Mendez-Vasquez, A. 2009 In: Proceedings of SPIE. 7444, 11 p.
Journal article

Estimation of indoor physical activity level based on footstep vibration signal measured by mems accelerometer in smart home environments
Lee, H., Park, J., Helal, S. 2009 In: 2nd International Workshop on Mobile Entity Localization and Tracking in GPS-less Environments, MELT 2009. Berlin : Springer p. 148-162. 15 p. ISBN: 364204378X , 9783642043789. Electronic ISBN: 9783642043857.
Conference contribution

Making our environments intelligent
Cook, D., Hagras, H., Callaghan, V., Helal, S. 2009 In: Pervasive and Mobile Computing. 5, 5, 2 p.
Editorial

Message from the General Chair
Helal, S. 2009
Other chapter contribution

Robotic companions for smart space interactions
Lee, D., Yamazaki, T., Helal, S. 2009 In: IEEE Pervasive Computing. 8, 2, p. 78-84. 7 p.
Journal article

Specification and synthesis of sensory datasets in pervasive spaces
Helal, S., Andres, M., Hossain, S. 2009 In: IEEE Symposium on Computers and Communications 2009, ISCC 2009. IEEE p. 920-925. 6 p. ISBN: 9781424446728.
Conference contribution

The Fourth International Conference on Intelligent Environments (IE 08): A Report
Hagras, H., Callaghan, V., Cook, D., Helal, S. 2009 In: Ai Magazine. 30, 1, p. 124-125. 2 p.
Journal article

The Gator Tech Smart House: Enabling technologies and lessons learned
Helal, S., Chen, C. 2009 In: i-CREATe '09 Proceedings of the 3rd International Convention on Rehabilitation Engineering & Assistive Technology. New York : ACM ISBN: 9781605587929.
Conference contribution

Speed adaptive mobile IP over wireless LAN
Tian, J., Helal, S. 12/2008 In: Wireless Communications and Mobile Computing. 8, 10, p. 1355-1364. 10 p.
Journal article

Safety enhancing mechanisms for pervasive computing systems in intelligent environments
Yang, H., Helal, S. 03/2008 In: 6th Annual IEEE International Conference on Pervasive Computing and Communications, PerCom 2008. IEEE p. 525-530. 6 p. ISBN: 9780769531137.
Conference contribution

A near-Zero run-time energy overhead within a computation outsourcing framework for energy management in mobile devices
Abukmail, A., Helal, S. 2008 In: International Conference on Information Technology: New Generations, ITNG 2008. IEEE p. 1017-1022. 6 p. ISBN: 0769530990, 9780769530994.
Conference contribution

Distributed mechanisms for enabling virtual sensors in service oriented intelligent environments
Bose, R., Helal, S. 2008 In: 4th International Conference on Intelligent Environments, IE 08. IEEE 8 p. Electronic ISBN: 9780863418945.
Conference contribution

Experience of enhancing the space sensing of networked robots using atlas service-oriented architecture
Helal, S., Lim, S., Bose, R., Yang, H., Kim, H., Cho, Y. 2008 In: 8th Asia-Pacific Conference on Computer-Human Interaction, APCHI 2008. Berlin : Springer 10 p. ISBN: 3540705848 , 9783540705840.
Conference contribution

Immersive Telecare for Assisting People with Special Needs
Helal, S., Abdulrazak, B. 2008 In: The Engineering Handbook of Smart Technology for Aging, Disability, and Independence. Hoboken : John Wiley and Sons p. 727-736. 10 p. ISBN: 9780471711551 .
Chapter

Introduction to the Book
Helal, S., Schmalz, M., Mokhtari, M., Abdulrazak, B. 2008 In: The Engineering Handbook of Smart Technology for Aging, Disability, and Independence. Hoboken : Wiley p. 1-26. 26 p. ISBN: 9780471711551. Electronic ISBN: 9780470379424.
Chapter

Location-based services: Back to the future
Bellavista, P., Küpper, A., Helal, S. 2008 In: IEEE Pervasive Computing. 7, 2, p. 85-89. 5 p.
Journal article

Observing walking behavior of humans using distributed phenomenon detection and tracking mechanisms
Bose, R., Helal, S. 2008 In: 2008 International Symposium on Applications and the Internet, SAINT 2008. IEEE p. 405-408. 4 p. ISBN: 9780769532974.
Conference contribution

Preface
Helal, S., Mokhtari, M., Abdulrazak, B. 2008
Other chapter contribution

Preface
Helal, S., Mokhtari, M., Abdulrazak, B. 2008
Other chapter contribution

Sifting through the jungle of sensor standards
Chen, C., Helal, S. 2008 In: IEEE Pervasive Computing. 7, 4, p. 84-88. 5 p.
Journal article

The Engineering Handbook of Smart Technology for Aging, Disability, and Independence
Helal, S., Mokhtari, M., Abdulrazak, B. 2008 Hoboken : John Wiley and Sons. 944 p. ISBN: 9780471711551.
Book

The Gator Tech Smart House: A Programmable Pervasive Space
Helal, S., Bose, R., Pickles, S., Elzabadani, H., King, J., Kaddourah, Y. 2008 In: The Engineering Handbook of Smart Technology for Aging, Disability, and Independence. John Wiley and Sons p. 693-709. 17 p. ISBN: 9780471711551.
Chapter

Fault-resilient Ubiquitous Service Composition
Xia, J., Chang, C., Kim, T., Yang, H., Bose, R., Helal, S. 24/09/2007 In: 3rd IET International Conference on Intelligent Environments, IE'07. IEEE p. 108-115. 8 p. ISBN: 9780863418532.
Conference contribution

A context-driven programming model for pervasive spaces
Yang, H., King, J., Helal, S., Jansen, E. 2007 In: Pervasive Computing for Quality of Life Enhancement. ICOST 2007. Berlin : Springer p. 31-43. 13 p. ISBN: 9783540730347. Electronic ISBN: 9783540730354.
Conference contribution

Context-aware service composition for mobile network environments
Lee, C., Ko, S., Lee, S., Lee, W., Helal, S. 2007 In: Ubiquitous Intelligence and Computing. UIC 2007. Berlin : Springer p. 941-952. 12 p. ISBN: 9783540735489. Electronic ISBN: 9783540735496.
Conference contribution

DPQ: Using a distributed priority queue to improve ad hoc TCP performance
Zhang, J., Jones, S., Wang, J., Helal, S. 2007 In: 4th International Conference on Information Technology-New Generations, ITNG 2007. IEEE p. 161-165. 5 p. ISBN: 0769527760.
Conference contribution

Marauder's map: Bringing people together
Bose, R., Yang, H., Helal, S. 2007 In: International Symposium on Applications and the Internet Workshops, 2007. SAINT Workshops 2007. IEEE Electronic ISBN: 0769527574.
Conference contribution

SuperCache: A mechanism to minimize the front end latency
Allan, Z., Helal, S. 2007 In: Information Technology, 2007. ITNG '07. Fourth International Conference on. IEEE p. 908-914. 7 p. ISBN: 0769527760.
Conference contribution

Toward a scalable home-care delivery for frail elders and people with special needs
Helal, S., Abdulrazak, B. 2007 In: 2007 IEEE 10th International Conference on Rehabilitation Robotics, ICORR'07. IEEE p. 994-998. 5 p. ISBN: 9781424413195.
Conference contribution

Virtual sensors for service oriented intelligent environments
Bose, R., Helal, S., Sivakumar, V., Lim, S. 2007 In: 3rd IASTED International Conference on Advances in Computer Science and Technology, ACST 2007. ACTA Press p. 165-170. 6 p.
Conference contribution

An efficient service propagation scheme for large-scale MANETs
Lee, C., Yoon, S., Kim, E., Helal, S. 27/11/2006 In: MPAC '06 Proceedings of the 4th international workshop on Middleware for Pervasive and Ad-Hoc Computing (MPAC 2006). New York : ACM p. 9. 1 p. ISBN: 1595934219.
Conference contribution

A comparison of two programming models for pervasive computing
Yang, H., Jansen, E., Helal, S. 2006 In: 2006 International Symposium on Applications and the Internet Workshops, SAINT 2006 Workshops. IEEE p. 134-137. 4 p. ISBN: 0769525105.
Conference contribution

A pervasive internet approach to fine-grain power-aware computing
Abukmail, A., Helal, S. 2006 In: 2006 International Symposium on Applications and the Internet, SAINT 2006. IEEE p. 109-115. 7 p. ISBN: 0769525083.
Conference contribution

Atlas: A service-oriented sensor platform hardware and middleware to enable programmable pervasive spaces
King, J., Bose, R., Yang, H., Pickles, S., Helal, S. 2006 In: 31st Annual IEEE Conference on Local Computer Networks, LCN 2006. IEEE p. 630-638. 9 p. ISBN: 1424404185. Electronic ISBN: 1424404193.
Conference contribution

Automated verification of proper choreography implementation
Jansen, E., Yang, H., Helal, S. 2006 In: 2006 International Symposium on Applications and the Internet, SAINT 2006. IEEE p. 180-189. 10 p. ISBN: 0769525083.
Conference contribution

Gossip-based service discovery in mobile ad hoc networks
Lee, C., Helal, S., Lee, W. 2006 In: IEICE Transactions on Communications. E89-B, 9, p. 2621-2624. 4 p.
Journal article

The μJini proxy architecture for impromptu mobile services
Lee, C., Helal, S., Nordstedt, D. 2006 In: 2006 International Symposium on Applications and the Internet Workshops, SAINT 2006 Workshops. IEEE p. 113-116. 4 p. ISBN: 0769525105.
Conference contribution

UbiNet: A generic and ubiquitous service provider framework: 2006 International Conference on Software Engineering Advances, ICSEA'06
Zhang, J., Helal, S. 2006 In: 2006 International Conference on Software Engineering Advances, ICSEA'06. IEEE ISBN: 0769527035.
Conference contribution

The Gator tech smart house: A programmable pervasive space
Helal, S., Mann, W., El-Zabadani, H., King, J., Kaddoura, Y., Jansen, E. 03/2005 In: Computer. 38, 3, p. 50-60. 11 p.
Journal article

Programming pervasive spaces
Helal, S. 01/2005 In: IEEE Pervasive Computing. 4, 1, p. 84-87. 4 p.
Journal article

Assistive Environments for Individuals with Special Needs
Helal, S., Lee, C., Mann, W. 2005 In: Smart Environments. Wiley p. 361-383. 23 p. ISBN: 9780471544487, 9780471686590 .
Chapter

NILE-PDT: a phenomenon detection and tracking framework for data stream management systems
Ali, M., Aref, W., Bose, R., Elmagarmid, A., Helal, S., Kamel, I., Mokbel, M. 2005 In: VLDB '05 Proceedings of the 31st international conference on Very large data bases. VLDB Endowment p. 1295-1298. 4 p. ISBN: 1595931546.
Conference contribution

RFID information grid for blind navigation and wayfinding
Willis, S., Helal, S. 2005 In: 9th IEEE International Symposium on Wearable Computers, ISWC 2005. IEEE p. 34-37. 4 p. ISBN: 0769524192.
Conference contribution

Rapid mobility of mobile IP over WLAN
Tian, J., Helal, S. 2005 In: Networking and Mobile Computing. Berlin : Springer p. 259-267. 9 p. ISBN: 9783540281023. Electronic ISBN: 9783540318682.
Conference contribution

Use of cell phones by elders with impairments: Overall appraisal, satisfaction, and suggestions
Mann, W., Helal, S., Davenport, R., Justiss, M., Tomita, M., Kemp, B. 19/07/2004 In: Technology and Disability. 16, 1, p. 49-57. 9 p.
Journal article

Drishti: An integrated indoor/outdoor blind navigation system and service
Ran, L., Helal, S., Moore, S. 2004 In: Pervasive Computing and Communications, 2004. PerCom 2004. Proceedings of the Second IEEE Annual Conference on. IEEE p. 23-30. 8 p. ISBN: 0769520901.
Conference contribution

Message from the general chairs
Oie, Y., Helal, S. 2004
Other chapter contribution

Pervasive computing research on aging, disability and independence
Mann, W., Helal, S. 2004
Conference paper

Predictive Mobile IP for rapid mobility
Hernandez, E., Helal, S., S., J., H., H., N., B., A., B., C., H., Commun., I.C.S.I.C.S.T.C.o.C. 2004 In: Proceedings - 29th Annual IEEE International Conference on Local Computer Networks, LCN 2004. IEEE p. 684-689. 6 p. ISBN: 0769522602.
Conference contribution

Welcome from the organizers of workshop 3: Proceedings - 2004 International Symposium on Applications and the Internet Workshops (Saint 2004Workshop)
Helal, S., Sunahara, H., Yamazaki, K. 2004
Other chapter contribution

Enabling smart spaces with OSGi
Lee, C., Nordstedt, D., Helal, S. 07/2003 In: IEEE Pervasive Computing. 2, 3, p. 89-94. 6 p.
Journal article

Extended Internet caching protocol: a foundation for building ubiquitous web caching
Gu, W., Helal, S. 9/03/2003 In: SAC '03 Proceedings of the 2003 ACM symposium on Applied computing. New York : ACM p. 901-907. 7 p. ISBN: 1581136242.
Conference contribution

A dynamic data/currency protocol for mobile database design and reconfiguration
Xia, Y., Helal, S. 2003 In: SAC '03 Proceedings of the 2003 ACM symposium on Applied Computing. New York : ACM p. 550-556. 7 p. ISBN: 1581136242.
Conference contribution

Adaptive delivery of video data over wireless and mobile environments
Helal, S., Sampath, L., Birkett, K., Hammer, J. 2003 In: Wireless Communications and Mobile Computing. 3, 1, p. 23-36. 14 p.
Journal article

An efficient algorithm for maintaining consistent group membership in ad hoc networks
Pradhan, P., Helal, S. 2003 In: 23rd International Conference on Distributed Computing Systems Workshops, ICDCSW 2003. IEEE p. 428-433. 6 p. ISBN: 0769519210.
Conference contribution

Context attributes: an approach to enable context-awareness for service discovery
Lee, C., Helal, S. 2003 In: 2003 Symposium on Applications and the Internet, SAINT 2003. IEEE p. 22-30. 9 p. ISBN: 0769518729.
Conference contribution

Enabling location-aware pervasive computing applications for the edlerly
Helal, S., Winkler, B., Lee, C., Kaddoura, Y., Ran, L., Giraldo, C., Kuchibhotla, S., Mann, W., (CSE@UTA), I.C.S.C.S.E.U.T.A. 2003 In: 1st IEEE International Conference on Pervasive Computing and Communications, PerCom 2003. IEEE p. 531-536. 6 p. ISBN: 0769518931.
Conference contribution

ILC-TCP: An interlayer collaboration protocol for TCP performance improvement in mobile and wireless environments
Chinta, M., Helal, S., Lee, C. 2003 In: 2003 IEEE Wireless Communications and Networking Conference: The Dawn of Pervasive Communication, WCNC 2003. IEEE p. 1004-1010. 7 p. ISBN: 0780377001.
Conference contribution

Konark - A service discovery and delivery protocol for ad-hoc networks
Helal, S., Desai, N., Verma, V., Lee, C. 2003 In: 2003 IEEE Wireless Communications and Networking Conference: The Dawn of Pervasive Communication, WCNC 2003. IEEE p. 2107-2113. 7 p. ISBN: 0780377001.
Conference contribution

Scalable Cache Invalidation Algorithms for Mobile Data Access
Elmagarmid, A., Jing, J., Helal, S., Lee, C. 2003 In: IEEE Transactions on Knowledge and Data Engineering. 15, 6, p. 1498-1511. 14 p.
Journal article

UbiData: ubiquitous mobile file service
Zhang, J., Helal, S., Hammer, J. 2003 In: SAC '03 Proceedings of the 2003 ACM symposium on Applied computing. New York : ACM p. 893-900. 8 p. ISBN: 1581136242.
Conference contribution

WAP: present and future
Helal, S., Kumar, V., Parimi, S., Agrawal, D. 2003 In: IEEE Pervasive Computing. 2, 1, p. 79-83. 5 p.
Journal article

iGrocer- A ubiquitous and pervasive smart grocery shopping system
Shekar, S., Nair, P., Helal, S., G., L., SIGAPP, A./. 2003 In: SAC '03 Proceedings of the 2003 ACM symposium on Applied computing. New York : ACM p. 645-652. 8 p. ISBN: 1581136242.
Conference contribution

E-service based information fusion: A user-level information integration framework
Helal, S., Lu, J. 23/08/2002 In: Technologies for E-Services. TES 2002. . Berlin : Springer p. 65-75. 11 p. ISBN: 9783540441106 . Electronic ISBN: 9783540461210.
Conference contribution

Pervasive Java, Part II
Helal, S. 04/2002 In: IEEE Pervasive Computing. 1, 2, p. 85-89. 5 p.
Journal article

HiCoMo: High commit mobile transactions
Lee, M., Helal, S. 01/2002 In: Distributed and Parallel Databases . 11, 1, p. 73-92. 20 p.
Journal article

Pervasive Java
Helal, S. 01/2002 In: IEEE Pervasive Computing. 1, 1, p. 82-85. 4 p.
Journal article

AZIMAs - Almost Zero Infrastructure Mobile Agent System
Nalla, A., Helal, S., Renganarayanan, V. 2002 In: Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE. IEEE p. 36-43. 8 p. ISBN: 0780373766.
Conference contribution

Achieving dynamic inter-organizational workflow management by integrating business processes, events and rules
Meng, J., Su, S., Lam, H., Helal, A., R.H., S. 2002 In: 35th Annual Hawaii International Conference on System Sciences, HICSS 2002. IEEE ISBN: 0769514359.
Conference contribution

CAD-HOC: a CAD-Like tool for generating mobility benchmarks in ad-hoc networks
Shah, S., Hernandez, E., Helal, S. 2002 In: Applications and the Internet, 2002. (SAINT 2002). Proceedings. 2002 Symposium on. IEEE p. 270-279. 10 p. ISBN: 0769514472.
Conference contribution

Flexible inter-enterprise workflow management using e-services
Meng, J., Krithivasan, R., Su, S., Helal, S. 2002 In: 4th IEEE International Workshop on Advanced Issues of E-Commerce and Web-Based Information Systems, WECWIS 2002. IEEE p. 43-50. 8 p. ISBN: 0769515673.
Conference contribution

Incremental hoarding and reintegration in mobile environments
Helal, S., Khushraj, A., Zhang, J., (IPSJ), I.C.S.T.C.o.t.I.(.I.P.S.o.J. 2002 In: 2002 Symposium on Applications and the Internet, 2002. (SAINT 2002). Proceedings.. IEEE p. 8-11. 4 p. ISBN: 0769514472.
Conference contribution

Internet agents for effective collaboration
Renganarayanan, V., Helal, S., Nalla, A., A., K., J., D., T., M. 2002 In: Mobile Agents for Telecommunication Applications. MATA 2002. Berlin : Springer p. 33-47. 15 p. ISBN: 3540000216 , 9783540360865 .
Conference contribution

Message from the General Chairs
Diethelm, M., Helal, S. 2002
Other

RAMON: Rapid-mobility network emulator
Hernandez, E., Helal, S. 2002 In: 27th Annual IEEE Conference on Local Computer Networks, LCN 2002. IEEE p. 809-817. 9 p. ISBN: 0769515916.
Conference contribution

The Internet enterprise: Symposium on Applications and the Internet, SAINT 2002
Helal, S., Su, S., Meng, J., Krithivasan, R., Jagatheesan, A. 2002 In: Applications and the Internet, 2002. (SAINT 2002). Proceedings. 2002 Symposium on. IEEE p. 54-62. 9 p. ISBN: 0769514472.
Conference contribution

aZIMAS: Web mobile agent system
Arumugam, S., Helal, S., Nalla, A. 2002 In: International Conference on Mobile Agents. Berlin : Springer p. 1-15. 15 p. ISBN: 3540000852 .
Conference contribution

A three-tier architecture for ubiquitous data access
Helal, S., Hammer, J., Zhang, J., Khushraj, A. 2001 In: ACS/IEEE International Conference on Computer Systems and Applications, AICCSA 2001. IEEE p. 177-180. 4 p. ISBN: 0769511651.
Conference contribution

Bizbuilder - An E-services framework targeted for internet workflow
Krithivasan, R., Helal, S. 2001 In: 2nd International Workshop on Technologies for E-Services, TES 2001. Berlin : Springer p. 89-102. 14 p. ISBN: 3540425659 , 9783540448099 .
Conference contribution

Brokering based self organizing e-service communities
Helal, S., Wang, M., Jagatheesan, A., Krithivasan, R. 2001 In: 5th International Symposium on Autonomous Decentralized Systems, ISADS 2001. IEEE p. 349-356. 8 p. ISBN: 0769510655.
Conference contribution

Decentralized ad-hoc groupware API and framework for mobile collaboration
Buszko, D., Lee, W., Helal, S. 2001 In: GROUP '01 Proceedings of the 2001 International ACM SIGGROUP Conference on Supporting Group Work. New York : ACM p. 5-14. 10 p. ISBN: 1581132948.
Conference contribution

Drishti: An integrated navigation system for visually impaired and disabled
Helal, S., Moore, S., Ramachandran, B. 2001 In: 5th International Symposium on Wearable Computers (ISWC 2001). IEEE p. 149-156. 8 p. ISBN: 0769513182.
Conference contribution

Examining mobile-IP performance in rapidly mobile environments: The case of a commuter train
Hemandez, E., Helal, S. 2001 In: 26th Conference on Local Computer Networks LCN 2001. IEEE p. 365-372. 8 p. ISBN: 0769513212 .
Conference contribution

Optimising thin clients for wireless computing via localization of keyboard activity
Ramamurthy, S., Helal, S. 2001 In: 20th IEEE International Performance, Computing, and Communications Conference. IEEE p. 249-252. 4 p. ISBN: 0780370015.
Conference contribution

An architecture for wireless LAN/WAN integration
Helal, S., Lee, C., Zhang, Y., Richard III, G. 2000 In: 2000 IEEE Wireless Communications and Networking Conference. IEEE p. 1035-1041. 7 p. ISBN: 0780365968.
Conference contribution

Optimising thin clients for wireless active-media applications
Aksoy, C., Helal, S. 2000 In: 3rd IEEE Workshop on Mobile Computing Systems and Applications, WMCSA 2000. IEEE p. 151-160. 10 p. ISBN: 0769508162.
Conference contribution

Rainbow: Distributed database system for classroom education and experimental research
Helal, S., Li, I. 2000 In: VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases. San Francisco : Morgan Kaufmann Publishers, Inc. p. 619-622. 4 p. ISBN: 1558607153.
Conference contribution

UMA-based wireless and mobile video delivery architecture: Internet Multimedia Management Systems
Sampath, L., Helal, S., Smith, J.R. 2000 In: Proceedings of the SPIE Voice, Video and Data Communications Symposium . SPIE p. 103-115. 13 p.
Conference contribution

Client-server computing in mobile environments
Jing, J., Helal, S., Elmagarmid, A. 06/1999 In: ACM Computing Surveys. 31, 2, p. 117-157. 41 p.
Journal article

WMCSA'99: 2nd IEEE Workshop on Mobile Computing Systems and Applications: Message from the general chair
Helal, S. 1999
Other chapter contribution