@conference {112,
	title = {URQUELL: Using wrist-based gestural interaction to discover POIs in urban environments},
	booktitle = {WristSense 2018: Workshop on Sensing Systems and Applications Using Wrist Worn Smart Devices, Co-located with IEEE PerCom{\textquoteright}18},
	year = {2018},
	month = {03/2018},
	publisher = {IEEE},
	organization = {IEEE},
	address = {Athens, Greece},
	abstract = {In this paper, we discuss the implementation of a prototype application (URQUELL) for the opportunistic discovery of POIs in a urban environment, and the multimodal, non-visual interaction with the system to retrieve details about these. The application works by pointing a smartphone or a wrist- worn sensor kit towards a physical venue location of interest. By retrieving information about the venue pointed at over various APIs, the application presents these to the users via high quality text-to-speech synthesis, negating the need to interact with the smartphone, which can be kept in a user{\textquoteright}s pocket at all times. Here, we discuss the implementation details of our prototype and outline future research directions.},
	keywords = {gestural interaction, location based services, multimodal interaction, wrist sensors},
	doi = {10.1109/PERCOMW.2018.8480136},
	author = {Andreas Komninos and Stylianos Sarakinos and Lydia Marini and John Garofalakis}
}
@conference {97,
	title = {Usability of Visibly Adaptive Smartphone keyboard layouts},
	booktitle = {20th Panhellenic Conference on Informatics (PCI2016)},
	year = {2016},
	publisher = {ACM},
	organization = {ACM},
	address = {Patras, Greece},
	abstract = {We present two touchscreen smartphone keyboard interface designs which dynamically alter key sizes as the user types and highlight likely key targets, based on word completion predictions. Although we find a speed reduction and no accuracy advantage with these methods over standard QWERTY, the text entry experience on mobile devices with these designs is significantly better for users.
},
	keywords = {Mobile Text Entry, touchscreen keyboards},
	doi = {10.1145/3003733.3003743},
	author = {Apostolos Gkoumas and Andreas Komninos and John Garofalakis}
}
@conference {79,
	title = {Use of Self-Reporting Questionnaires to Evaluate Augmented Paper Maps for Group Navigation},
	booktitle = {12th European Conference on Ambient Intelligence},
	year = {2015},
	publisher = {Springer},
	organization = {Springer},
	address = {Athens, Greece},
	abstract = {One popular and widely use of augmented reality based application, is the projection of points of interests on top of the phones{\textquoteright} camera view. In this paper we discuss the implementation of an AR application that acts as a magic lens over printed maps, overlaying POIs and routes. This method expands the information space available to members of groups during navigation, partially mitigating the issue of several group members trying to share a small screen device. Our work complements existing literature by focusing on the navigation tasks and by using self-reporting questionnaires to measure affective state and user experience. We evaluate this system with groups of real tourists in a pre- liminary field trial and report our findings.},
	keywords = {augmented maps, Augmented Reality, group navigation, mobile maps, tourism},
	doi = {https://doi.org/10.1007/978-3-319-26005-1_9},
	author = {Andreas Komninos and Jeries Besharat and John Garofalakis}
}
@article {71,
	title = {Using Degraded Music Quality to Encourage a Health Improving Walking Pace: BeatClearWalker},
	journal = {EAI Endorsed Transactions on Ambient Systems},
	volume = {7},
	year = {2015},
	month = {11/2015},
	publisher = {EAI},
	abstract = {Meeting the target of 8000 steps/day, as recommended by many national governments and health authorities, can provide considerable physical and mental health benefits and is seen as a key target for reducing obesity levels and improving public health. However, to optimize the health benefits, walking should be performed at a {\textquotedblleft}moderate{\textquotedblright} intensity. While there are numerous mobile fitness applications that monitor distance walked, none directly support walking at this cadence nor has there been any research into live feedback for walking cadence. We present a smartphone fitness application to help users learn how to walk at a moderate cadence and maintain that cadence. We apply real-time audio effects that diminish the audio quality of music when the target walking cadence is not being reached. This provides an immersive and intuitive application that can easily be integrated into everyday life as allows users to walk while listening to their own music and encourages eyes-free interaction. In this paper, we introduce our approach, design, initial lab evaluation and a controlled outdoor study. Results show that using music degradation decreases the number of below-cadence steps, that users felt they worked harder with our player and would use it while exercise walking.},
	keywords = {audio interfaces, Exercise, healthy lifestyle, mobile interaction, physical activity},
	doi = {10.4108/icst.pervasivehealth.2015.259072},
	author = {Andreas Komninos and Mark D Dunlop and David Rowe and Allan Hewitt and Steven Coull}
}
@article {56,
	title = {Using Communication Frequency and Recency Context to Facilitate Mobile Contact List Retrieval},
	journal = {International Journal of Handheld Computing Research (IJHCR)},
	volume = {4},
	year = {2013},
	pages = {52-71},
	publisher = {IGI Global},
	abstract = {As mobile contact lists get bigger and bigger the cognitive load on the user increases while trying to retrieve the next contact to start a communication session. In this paper we focus on the task of retrieving a contact when the purpose is to start a phone call, examining mobile users{\textquoteright} call logs and showing that it is possible to accurately predict the next contact to be called using relatively simple heuristics and algorithms that describe usage context. The authors present and discuss the results of the proposed method applied on a dataset collected from an experiment the authors organised involving 25 mobile users.
},
	keywords = {call log analysis, call prediction, mobile contact list, mobile contact retrieval, Mobile context},
	doi = {10.4018/ijhcr.2013100104},
	author = {Athanasios Plessas and Vasilios Stefanis and Andreas Komninos and John Garofalakis}
}
@article {zaharakis2012ubiquitous,
	title = {Ubiquitous computing - a multidisciplinary endeavour},
	journal = {IEEE Latin America Transactions (Revista IEEE America Latina)},
	volume = {10},
	number = {3},
	year = {2012},
	pages = {1850{\textendash}1852},
	publisher = {IEEE},
	keywords = {Ambient Intelligence, Pervasive systems, Ubiquitous computing},
	doi = {10.1109/TLA.2012.6222593},
	author = {Zaharakis, Ioannis and Andreas Komninos}
}
@conference {komninos2012urban,
	title = {Urban exploration using audio scents},
	booktitle = {Proceedings of the 14th international conference on Human-computer interaction with mobile devices and services},
	year = {2012},
	pages = {349{\textendash}358},
	publisher = {ACM},
	organization = {ACM},
	address = {San Francisco, USA},
	keywords = {Audio mixed reality, Implicit navigation, urban environments},
	doi = {10.1145/2371574.2371629},
	author = {Andreas Komninos and Barrie, Peter and Vasilios Stefanis and Athanasios Plessas}
}
@conference {komninos2009use,
	title = {The use of mobile contact list applications and a context-oriented framework to support their design},
	booktitle = {Proceedings of the 11th International Conference on Human-Computer Interaction with Mobile Devices and Services},
	year = {2009},
	pages = {79},
	publisher = {ACM},
	organization = {ACM},
	address = {Bonn, Germany},
	keywords = {Context awareness, Mobile PIM, User studies},
	doi = {10.1145/1613858.1613951},
	author = {Andreas Komninos and Liarokapis, Dimitrios}
}
