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Dr. Stavroula Ntoa
Foundation for Research and Technology Hellas, Institute of Computer Science, N. Plastira 100,Vassilika Vouton, GR-70013 Heraklion, Greece

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0 Usability
0 User Experience
0 Human-Computer Interaction
0 Design for All
0 Intelligent Environments

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User Experience
Usability
Human-Computer Interaction
Intelligent Environments
Human Centered AI

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Article
Published: 24 August 2021 in Multimedia Tools and Applications
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Motivated by a combination of social media, technological evolution, as well as new habits and preferences of TV content consumers, there is an increasing demand for enhancement of professional productions with user generated content. Studies have explored the potential and feasibility of this approach, indicating that footage from non-professionals can be effectively used to enrich the viewing experience. However, an important concern is whether such efforts are appealing to potential contributors, and what can actually impact their satisfaction and loyalty. Aiming to investigate these factors, this paper presents a mobile application for content contributors and a study involving 38 attendees of live events, using the application in the field. The events were hosted in two different countries, and transmitted by two well-known broadcasters. The results suggest that age, gender, technological expertise, and overall sharing attitude do not affect the satisfaction and loyalty of contributors. The differentiating factors, however, are the filming confidence and expertise of contributors, as well as the Wi-Fi/4G connectivity on-site. Implications of these findings are discussed and recommendations for similar endeavors are provided.

ACS Style

Stavroula Ntoa; George Margetis; Fiona Rivera; Michael Evans; Ilia Adami; Georgios Mathioudakis; Rajitha Weerakkody; George Metaxakis; Ioannis Markopoulos; Marta Mrak; Constantine Stephanidis. User generated content for enhanced professional productions: a mobile application for content contributors and a study on the factors influencing their satisfaction and loyalty. Multimedia Tools and Applications 2021, 1 -21.

AMA Style

Stavroula Ntoa, George Margetis, Fiona Rivera, Michael Evans, Ilia Adami, Georgios Mathioudakis, Rajitha Weerakkody, George Metaxakis, Ioannis Markopoulos, Marta Mrak, Constantine Stephanidis. User generated content for enhanced professional productions: a mobile application for content contributors and a study on the factors influencing their satisfaction and loyalty. Multimedia Tools and Applications. 2021; ():1-21.

Chicago/Turabian Style

Stavroula Ntoa; George Margetis; Fiona Rivera; Michael Evans; Ilia Adami; Georgios Mathioudakis; Rajitha Weerakkody; George Metaxakis; Ioannis Markopoulos; Marta Mrak; Constantine Stephanidis. 2021. "User generated content for enhanced professional productions: a mobile application for content contributors and a study on the factors influencing their satisfaction and loyalty." Multimedia Tools and Applications , no. : 1-21.

Conference paper
Published: 03 July 2021 in Transactions on Petri Nets and Other Models of Concurrency XV
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ACS Style

Helmut Degen; Stavroula Ntoa. From a Workshop to a Framework for Human-Centered Artificial Intelligence. Transactions on Petri Nets and Other Models of Concurrency XV 2021, 166 -184.

AMA Style

Helmut Degen, Stavroula Ntoa. From a Workshop to a Framework for Human-Centered Artificial Intelligence. Transactions on Petri Nets and Other Models of Concurrency XV. 2021; ():166-184.

Chicago/Turabian Style

Helmut Degen; Stavroula Ntoa. 2021. "From a Workshop to a Framework for Human-Centered Artificial Intelligence." Transactions on Petri Nets and Other Models of Concurrency XV , no. : 166-184.

Journal article
Published: 25 May 2021 in Technologies
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‘User Experience’ (UX) is a term that has been established in HCI research and practice, subsuming the term ‘usability’. UX denotes that interaction with a contemporary technological system goes far beyond usability, extending to one’s emotions before, during, and after using the system and cannot be defined only by studying the fundamental usability attributes of effectiveness, efficiency and user satisfaction. Measuring UX becomes a substantially more complicated endeavor when the interaction target is not just a technological system or application, but an entire intelligent environment and the systems contained therein. Motivated by the imminent need to assess, measure and quantify user experience in intelligent environments, this paper presents a methodological and conceptual framework that provides concrete guidance for UX research, design and evaluation, explaining which UX parameter should be measured, how, and when. An evaluation of the framework indicated that it can be valuable for researchers and practitioners, assisting them in planning, carrying out, and analyzing UX studies in a comprehensive and thorough manner, thus enhancing their understanding and improving the experiences they design for intelligent environments.

ACS Style

Stavroula Ntoa; George Margetis; Margherita Antona; Constantine Stephanidis. User Experience Evaluation in Intelligent Environments: A Comprehensive Framework. Technologies 2021, 9, 41 .

AMA Style

Stavroula Ntoa, George Margetis, Margherita Antona, Constantine Stephanidis. User Experience Evaluation in Intelligent Environments: A Comprehensive Framework. Technologies. 2021; 9 (2):41.

Chicago/Turabian Style

Stavroula Ntoa; George Margetis; Margherita Antona; Constantine Stephanidis. 2021. "User Experience Evaluation in Intelligent Environments: A Comprehensive Framework." Technologies 9, no. 2: 41.

Journal article
Published: 02 February 2021 in Electronics
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With the ever-advancing availability of digitized museum artifacts, the question of how to make the vast collection of exhibits accessible and explorable beyond what museums traditionally offer via their websites and exposed databases has recently gained increased attention. This research work introduces the Invisible Museum: a user-centric platform that allows users to create interactive and immersive virtual 3D/VR exhibitions using a unified collaborative authoring environment. The platform itself was designed following a Human-Centered Design approach, with the active participation of museum curators and end-users. Content representation adheres to domain standards such as International Committee for Documentation of the International Council of Museums (CIDOC-CRM) and the Europeana Data Model and exploits state-of-the-art deep learning technologies to assist the curators by generating ontology bindings for textual data. The platform enables the formulation and semantic representation of narratives that guide storytelling experiences and bind the presented artifacts with their socio-historic context. Main contributions are pertinent to the fields of (a) user-designed dynamic virtual exhibitions, (b) personalized suggestions and exhibition tours, (c) visualization in web-based 3D/VR technologies, and (d) immersive navigation and interaction. The Invisible Museum has been evaluated using a combination of different methodologies, ensuring the delivery of a high-quality user experience, leading to valuable lessons learned, which are discussed in the article.

ACS Style

Emmanouil Zidianakis; Nikolaos Partarakis; Stavroula Ntoa; Antonis Dimopoulos; Stella Kopidaki; Anastasia Ntagianta; Emmanouil Ntafotis; Aldo Xhako; Zacharias Pervolarakis; Eirini Kontaki; Ioanna Zidianaki; Andreas Michelakis; Michalis Foukarakis; Constantine Stephanidis. The Invisible Museum: A User-Centric Platform for Creating Virtual 3D Exhibitions with VR Support. Electronics 2021, 10, 363 .

AMA Style

Emmanouil Zidianakis, Nikolaos Partarakis, Stavroula Ntoa, Antonis Dimopoulos, Stella Kopidaki, Anastasia Ntagianta, Emmanouil Ntafotis, Aldo Xhako, Zacharias Pervolarakis, Eirini Kontaki, Ioanna Zidianaki, Andreas Michelakis, Michalis Foukarakis, Constantine Stephanidis. The Invisible Museum: A User-Centric Platform for Creating Virtual 3D Exhibitions with VR Support. Electronics. 2021; 10 (3):363.

Chicago/Turabian Style

Emmanouil Zidianakis; Nikolaos Partarakis; Stavroula Ntoa; Antonis Dimopoulos; Stella Kopidaki; Anastasia Ntagianta; Emmanouil Ntafotis; Aldo Xhako; Zacharias Pervolarakis; Eirini Kontaki; Ioanna Zidianaki; Andreas Michelakis; Michalis Foukarakis; Constantine Stephanidis. 2021. "The Invisible Museum: A User-Centric Platform for Creating Virtual 3D Exhibitions with VR Support." Electronics 10, no. 3: 363.

Journal article
Published: 13 January 2021 in Sensors
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Improving the well-being and quality of life of the elderly population is closely related to assisting them to effectively manage age-related conditions such as chronic illnesses and anxiety, and to maintain their independence and self-sufficiency as much as possible. This paper presents the design, architecture and implementation structure of an adaptive system for monitoring the health and well-being of the elderly. The system was designed following best practices of the Human-Centred Design approach involving representative end-users from the early stages.

ACS Style

Ilia Adami; Michalis Foukarakis; Stavroula Ntoa; Nikolaos Partarakis; Nikolaos Stefanakis; George Koutras; Themistoklis Kutsuras; Danai Ioannidi; Xenophon Zabulis; Constantine Stephanidis. Monitoring Health Parameters of Elders to Support Independent Living and Improve Their Quality of Life. Sensors 2021, 21, 517 .

AMA Style

Ilia Adami, Michalis Foukarakis, Stavroula Ntoa, Nikolaos Partarakis, Nikolaos Stefanakis, George Koutras, Themistoklis Kutsuras, Danai Ioannidi, Xenophon Zabulis, Constantine Stephanidis. Monitoring Health Parameters of Elders to Support Independent Living and Improve Their Quality of Life. Sensors. 2021; 21 (2):517.

Chicago/Turabian Style

Ilia Adami; Michalis Foukarakis; Stavroula Ntoa; Nikolaos Partarakis; Nikolaos Stefanakis; George Koutras; Themistoklis Kutsuras; Danai Ioannidi; Xenophon Zabulis; Constantine Stephanidis. 2021. "Monitoring Health Parameters of Elders to Support Independent Living and Improve Their Quality of Life." Sensors 21, no. 2: 517.

Journal article
Published: 31 December 2020 in Applied Sciences
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Culture is a field that is currently entering a revolutionary phase, no longer being a privilege for the few, but expanding to new audiences who are urged to not only passively consume cultural heritage content, but actually participate and assimilate it on their own. In this context, museums have already embraced new technologies as part of their exhibitions, many of them featuring augmented or virtual reality artifacts. The presented work proposes the synthesis of augmented, virtual and mixed reality technologies to provide unified X-Reality experiences in realistic virtual museums, engaging visitors in an interactive and seamless fusion of physical and virtual worlds that will feature virtual agents exhibiting naturalistic behavior. Visitors will be able to interact with the virtual agents, as they would with real world counterparts. The envisioned approach is expected to not only provide refined experiences for museum visitors, but also achieve high quality entertainment combined with more effective knowledge acquisition.

ACS Style

George Margetis; Konstantinos C. Apostolakis; Stavroula Ntoa; George Papagiannakis; Constantine Stephanidis. X-Reality Museums: Unifying the Virtual and Real World Towards Realistic Virtual Museums. Applied Sciences 2020, 11, 338 .

AMA Style

George Margetis, Konstantinos C. Apostolakis, Stavroula Ntoa, George Papagiannakis, Constantine Stephanidis. X-Reality Museums: Unifying the Virtual and Real World Towards Realistic Virtual Museums. Applied Sciences. 2020; 11 (1):338.

Chicago/Turabian Style

George Margetis; Konstantinos C. Apostolakis; Stavroula Ntoa; George Papagiannakis; Constantine Stephanidis. 2020. "X-Reality Museums: Unifying the Virtual and Real World Towards Realistic Virtual Museums." Applied Sciences 11, no. 1: 338.

Original article
Published: 08 August 2020 in The Visual Computer
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Virtual reality (VR) has re-emerged as a low-cost, highly accessible consumer product, and training on simulators is rapidly becoming standard in many industrial sectors. However, the available systems are either focusing on gaming context, featuring limited capabilities or they support only content creation of virtual environments without any rapid prototyping and modification. In this project, we propose a code-free, visual scripting platform to replicate gamified training scenarios through rapid prototyping and VR software design patterns. We implemented and compared two authoring tools: a) visual scripting and b) VR editor for the rapid reconstruction of VR training scenarios. Our visual scripting module is capable of generating training applications utilizing a node-based scripting system, whereas the VR editor gives user/developer the ability to customize and populate new VR training scenarios directly from the virtual environment. We also introduce action prototypes, a new software design pattern suitable to replicate behavioral tasks for VR experiences. In addition, we present the training scenegraph architecture as the main model to represent training scenarios on a modular, dynamic and highly adaptive acyclic graph based on a structured educational curriculum. Finally, a user-based evaluation of the proposed solution indicated that users—regardless of their programming expertise—can effectively use the tools to create and modify training scenarios in VR.

ACS Style

Paul Zikas; George Papagiannakis; Nick Lydatakis; Steve Kateros; Stavroula Ntoa; Ilia Adami; Constantine Stephanidis. Immersive visual scripting based on VR software design patterns for experiential training. The Visual Computer 2020, 36, 1965 -1977.

AMA Style

Paul Zikas, George Papagiannakis, Nick Lydatakis, Steve Kateros, Stavroula Ntoa, Ilia Adami, Constantine Stephanidis. Immersive visual scripting based on VR software design patterns for experiential training. The Visual Computer. 2020; 36 (10-12):1965-1977.

Chicago/Turabian Style

Paul Zikas; George Papagiannakis; Nick Lydatakis; Steve Kateros; Stavroula Ntoa; Ilia Adami; Constantine Stephanidis. 2020. "Immersive visual scripting based on VR software design patterns for experiential training." The Visual Computer 36, no. 10-12: 1965-1977.

Journal article
Published: 15 February 2020 in Sustainability
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This work regards the digital representation of tangible and intangible dimensions of heritage crafts, towards craft preservation. Based on state-of-the-art digital documentation, knowledge representation and narrative creation approach are presented. Craft presentation methods that use the represented content to provide accurate, intuitive, engaging, and educational ways for HC presentation and appreciation are proposed. The proposed methods aim to contribute to HC preservation, by adding value to the cultural visit, before, and after it.

ACS Style

Xenophon Zabulis; Carlo Meghini; Nikolaos Partarakis; Cynthia Beisswenger; Arnaud Dubois; Maria Fasoula; Vito Nitti; Stavroula Ntoa; Ilia Adami; Antonios Chatziantoniou; Valentina Bartalesi; Daniele Metilli; Nikolaos Stivaktakis; Nikolaos Patsiouras; Paraskevi Doulgeraki; Effie Karuzaki; Evropi Stefanidi; Ammar Qammaz; Danae Kaplanidi; Ilka Neumann-Janßen; Ulrike Denter; Hansgeorg Hauser; Argyro Petraki; Ioannis Stivaktakis; Eleni Mantinaki; Anastasia Rigaki; George Galanakis. Representation and Preservation of Heritage Crafts. Sustainability 2020, 12, 1461 .

AMA Style

Xenophon Zabulis, Carlo Meghini, Nikolaos Partarakis, Cynthia Beisswenger, Arnaud Dubois, Maria Fasoula, Vito Nitti, Stavroula Ntoa, Ilia Adami, Antonios Chatziantoniou, Valentina Bartalesi, Daniele Metilli, Nikolaos Stivaktakis, Nikolaos Patsiouras, Paraskevi Doulgeraki, Effie Karuzaki, Evropi Stefanidi, Ammar Qammaz, Danae Kaplanidi, Ilka Neumann-Janßen, Ulrike Denter, Hansgeorg Hauser, Argyro Petraki, Ioannis Stivaktakis, Eleni Mantinaki, Anastasia Rigaki, George Galanakis. Representation and Preservation of Heritage Crafts. Sustainability. 2020; 12 (4):1461.

Chicago/Turabian Style

Xenophon Zabulis; Carlo Meghini; Nikolaos Partarakis; Cynthia Beisswenger; Arnaud Dubois; Maria Fasoula; Vito Nitti; Stavroula Ntoa; Ilia Adami; Antonios Chatziantoniou; Valentina Bartalesi; Daniele Metilli; Nikolaos Stivaktakis; Nikolaos Patsiouras; Paraskevi Doulgeraki; Effie Karuzaki; Evropi Stefanidi; Ammar Qammaz; Danae Kaplanidi; Ilka Neumann-Janßen; Ulrike Denter; Hansgeorg Hauser; Argyro Petraki; Ioannis Stivaktakis; Eleni Mantinaki; Anastasia Rigaki; George Galanakis. 2020. "Representation and Preservation of Heritage Crafts." Sustainability 12, no. 4: 1461.

Conference paper
Published: 06 July 2019 in Communications in Computer and Information Science
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Retail stores and in particular malls are going through a recession period, resulting among others from the change in customers’ shopping habits and the shift towards e-commerce. Proposed strategies to alleviate this situation require manifold solutions, especially for malls, as they constitute ecosystems featuring both commercial and social activities. This paper proposes a model following an omni-channel consumer engagement approach, and blending at the same time the physical and digital shopping experience through an extended reality technology framework. The main benefits of the proposed approach are that it can be easily deployed in existing malls, as well as that it combines benefits from both physical and virtual shopping, being flexible to serve in the best possible way the evolving needs of customers. In this respect, malls of the near future can become appealing again to a wide consumer base and regain their lost allure.

ACS Style

George Margetis; Stavroula Ntoa; Constantine Stephanidis. Smart Omni-Channel Consumer Engagement in Malls. Communications in Computer and Information Science 2019, 89 -96.

AMA Style

George Margetis, Stavroula Ntoa, Constantine Stephanidis. Smart Omni-Channel Consumer Engagement in Malls. Communications in Computer and Information Science. 2019; ():89-96.

Chicago/Turabian Style

George Margetis; Stavroula Ntoa; Constantine Stephanidis. 2019. "Smart Omni-Channel Consumer Engagement in Malls." Communications in Computer and Information Science , no. : 89-96.

Survey article
Published: 01 July 2019 in International Journal of Human–Computer Interaction
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This article aims to investigate the Grand Challenges which arise in the current and emerging landscape of rapid technological evolution towards more intelligent interactive technologies, coupled with increased and widened societal needs, as well as individual and collective expectations that HCI, as a discipline, is called upon to address. A perspective oriented to humane and social values is adopted, formulating the challenges in terms of the impact of emerging intelligent interactive technologies on human life both at the individual and societal levels. Seven Grand Challenges are identified and presented in this article: Human-Technology Symbiosis; Human-Environment Interactions; Ethics, Privacy and Security; Well-being, Health and Eudaimonia; Accessibility and Universal Access; Learning and Creativity; and Social Organization and Democracy. Although not exhaustive, they summarize the views and research priorities of an international interdisciplinary group of experts, reflecting different scientific perspectives, methodological approaches and application domains. Each identified Grand Challenge is analyzed in terms of: concept and problem definition; main research issues involved and state of the art; and associated emerging requirements. BACKGROUND This article presents the results of the collective effort of a group of 32 experts involved in the community of the Human Computer Interaction International (HCII) Conference series. The group’s collaboration started in early 2018 with the collection of opinions from all group members, each asked to independently list and describe five HCI grand challenges. During a one-day meeting held on the 20th July 2018 in the context of the HCI International 2018 Conference in Las Vegas, USA, the identified topics were debated and challenges were formulated in terms of the impact of emerging intelligent interactive technologies on human life both at the individual and societal levels. Further analysis and consolidation led to a set of seven Grand Challenges presented herein. This activity was organized and supported by the HCII Conference series.

ACS Style

Chairs Constantine Stephanidis; Gavriel Salvendy; Margherita Members of the Group Margherita Antona; Jessie Y. C. Chen; Jianming Dong; Vincent G. Duffy; Xiaowen Fang; Cali Fidopiastis; Gino Fragomeni; Limin Paul Fu; Yinni Guo; Don Harris; Andri Ioannou; Kyeong-Ah (Kate) Jeong; Shin’Ichi Konomi; Heidi Krömker; Masaaki Kurosu; James R. Lewis; Aaron Marcus; Gabriele Meiselwitz; Abbas Moallem; Hirohiko Mori; Fiona Fui-Hoon Nah; Stavroula Ntoa; Pei-Luen Patrick Rau; Dylan Schmorrow; Keng Siau; Norbert Streitz; Wentao Wang; Sakae Yamamoto; Panayiotis Zaphiris; Jia Zhou. Seven HCI Grand Challenges. International Journal of Human–Computer Interaction 2019, 35, 1229 -1269.

AMA Style

Chairs Constantine Stephanidis, Gavriel Salvendy, Margherita Members of the Group Margherita Antona, Jessie Y. C. Chen, Jianming Dong, Vincent G. Duffy, Xiaowen Fang, Cali Fidopiastis, Gino Fragomeni, Limin Paul Fu, Yinni Guo, Don Harris, Andri Ioannou, Kyeong-Ah (Kate) Jeong, Shin’Ichi Konomi, Heidi Krömker, Masaaki Kurosu, James R. Lewis, Aaron Marcus, Gabriele Meiselwitz, Abbas Moallem, Hirohiko Mori, Fiona Fui-Hoon Nah, Stavroula Ntoa, Pei-Luen Patrick Rau, Dylan Schmorrow, Keng Siau, Norbert Streitz, Wentao Wang, Sakae Yamamoto, Panayiotis Zaphiris, Jia Zhou. Seven HCI Grand Challenges. International Journal of Human–Computer Interaction. 2019; 35 (14):1229-1269.

Chicago/Turabian Style

Chairs Constantine Stephanidis; Gavriel Salvendy; Margherita Members of the Group Margherita Antona; Jessie Y. C. Chen; Jianming Dong; Vincent G. Duffy; Xiaowen Fang; Cali Fidopiastis; Gino Fragomeni; Limin Paul Fu; Yinni Guo; Don Harris; Andri Ioannou; Kyeong-Ah (Kate) Jeong; Shin’Ichi Konomi; Heidi Krömker; Masaaki Kurosu; James R. Lewis; Aaron Marcus; Gabriele Meiselwitz; Abbas Moallem; Hirohiko Mori; Fiona Fui-Hoon Nah; Stavroula Ntoa; Pei-Luen Patrick Rau; Dylan Schmorrow; Keng Siau; Norbert Streitz; Wentao Wang; Sakae Yamamoto; Panayiotis Zaphiris; Jia Zhou. 2019. "Seven HCI Grand Challenges." International Journal of Human–Computer Interaction 35, no. 14: 1229-1269.

Article
Published: 02 January 2019 in Multimedia Tools and Applications
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Physical paper, in its various forms (e.g. books, leaflets, catalogues), is extensively used in everyday activities, despite any advancements in digital technology and ICT. Inspired by the popularity of this medium, several research efforts have envisioned and pursued a new era of interactive paper, however several challenges still remain to be addressed. On the other hand, recent advancements towards Ambient Intelligence (AmI) and Smart environments, bear the promise of seamless integration of the physical and digital worlds in an intuitive and user-friendly manner. This paper presents InPrinted, a systematic and generic framework supporting physical paper augmentation and user interaction in Ambient intelligence environments. InPrinted enables natural multimodal user interaction with any kind of printed matter in smart environments, providing context aware and anticipation mechanisms, as well as tools and interaction techniques that support the development of applications incorporating printed matter augmentation. InPrinted has been put to practice in the development of various systems, including the Interactive Maps system, facilitating interaction with printed maps as well as their augmentation with digital information. The results of an in-situ observation experiment of the Interactive Maps system are reported, highlighting that interacting with augmented paper is quite easy and natural, while the overall User Experience is positive.

ACS Style

George Margetis; Stavroula Ntoa; Margherita Antona; Constantine Stephanidis. Augmenting natural interaction with physical paper in ambient intelligence environments. Multimedia Tools and Applications 2019, 78, 13387 -13433.

AMA Style

George Margetis, Stavroula Ntoa, Margherita Antona, Constantine Stephanidis. Augmenting natural interaction with physical paper in ambient intelligence environments. Multimedia Tools and Applications. 2019; 78 (10):13387-13433.

Chicago/Turabian Style

George Margetis; Stavroula Ntoa; Margherita Antona; Constantine Stephanidis. 2019. "Augmenting natural interaction with physical paper in ambient intelligence environments." Multimedia Tools and Applications 78, no. 10: 13387-13433.

Conference paper
Published: 01 January 2019 in Proceedings of the 5th International Conference on Vehicle Technology and Intelligent Transport Systems
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ACS Style

Yannis Lilis; Emmanouil Zidianakis; Nikolaos Partarakis; Stavroula Ntoa; Constantine Stephanidis. A Framework for Personalised HMI Interaction in ADAS Systems. Proceedings of the 5th International Conference on Vehicle Technology and Intelligent Transport Systems 2019, 586 -593.

AMA Style

Yannis Lilis, Emmanouil Zidianakis, Nikolaos Partarakis, Stavroula Ntoa, Constantine Stephanidis. A Framework for Personalised HMI Interaction in ADAS Systems. Proceedings of the 5th International Conference on Vehicle Technology and Intelligent Transport Systems. 2019; ():586-593.

Chicago/Turabian Style

Yannis Lilis; Emmanouil Zidianakis; Nikolaos Partarakis; Stavroula Ntoa; Constantine Stephanidis. 2019. "A Framework for Personalised HMI Interaction in ADAS Systems." Proceedings of the 5th International Conference on Vehicle Technology and Intelligent Transport Systems , no. : 586-593.

Conference paper
Published: 09 November 2018 in Advances in Intelligent Systems and Computing
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Ambient Intelligence constitutes a new human-centered technological paradigm, where environments are oriented towards anticipating and satisfying the needs of their inhabitants. In this context, evaluation becomes of paramount importance. This paper presents UXAmI Observer, an automated user experience evaluation tool for Ambient Intelligence environments, taking advantage of their inherent infrastructure to automatically acquire measurements during user testing experiments. The tool provides powerful data visualizations for the entire experiment, for each system and application evaluated, as well as for each experiment participant individually, ensuring synchronization of data with video recordings, and facilitating manual data input by the evaluators themselves.

ACS Style

Stavroula Ntoa; George Margetis; Margherita Antona; Constantine Stephanidis. UXAmI Observer: An Automated User Experience Evaluation Tool for Ambient Intelligence Environments. Advances in Intelligent Systems and Computing 2018, 1350 -1370.

AMA Style

Stavroula Ntoa, George Margetis, Margherita Antona, Constantine Stephanidis. UXAmI Observer: An Automated User Experience Evaluation Tool for Ambient Intelligence Environments. Advances in Intelligent Systems and Computing. 2018; ():1350-1370.

Chicago/Turabian Style

Stavroula Ntoa; George Margetis; Margherita Antona; Constantine Stephanidis. 2018. "UXAmI Observer: An Automated User Experience Evaluation Tool for Ambient Intelligence Environments." Advances in Intelligent Systems and Computing , no. : 1350-1370.

Conference paper
Published: 17 February 2018 in Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Although activities of daily living are often difficult for individuals with cognitive impairments, their autonomy and independence can be fostered through interactive technologies. The use of traditional computer interfaces has however proved to be difficult for these users, bringing to the surface the need for novel interaction methods. This paper proposes Let’s Cook, an innovative Augmented Reality game, designed to teach children with cognitive impairments how to prepare simple meals, following a playful approach. Let’s Cook supports multimodal interaction techniques utilizing tangible objects on a table-top surface, as well as multimedia output. Additionally, it can be personalized to accommodate the diverse needs of children with cognitive impairments by employing individual user profiling. The system is currently installed in the kitchen of the Rehabilitation Centre for Children with Disabilities in Heraklion, Crete where it was evaluated by the students.

ACS Style

Eleni Papadaki; Stavroula Ntoa; Ilia Adami; Constantine Stephanidis. Let’s Cook: An Augmented Reality System Towards Developing Cooking Skills for Children with Cognitive Impairments. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2018, 237 -247.

AMA Style

Eleni Papadaki, Stavroula Ntoa, Ilia Adami, Constantine Stephanidis. Let’s Cook: An Augmented Reality System Towards Developing Cooking Skills for Children with Cognitive Impairments. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering. 2018; ():237-247.

Chicago/Turabian Style

Eleni Papadaki; Stavroula Ntoa; Ilia Adami; Constantine Stephanidis. 2018. "Let’s Cook: An Augmented Reality System Towards Developing Cooking Skills for Children with Cognitive Impairments." Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering , no. : 237-247.

Conference paper
Published: 18 May 2017 in DNA Computing
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ACS Style

Stavroula Ntoa; Chryssi Birliraki; Giannis Drossis; George Margetis; Ilia Adami; Constantine Stephanidis. UX Design of a Big Data Visualization Application Supporting Gesture-Based Interaction with a Large Display. DNA Computing 2017, 248 -265.

AMA Style

Stavroula Ntoa, Chryssi Birliraki, Giannis Drossis, George Margetis, Ilia Adami, Constantine Stephanidis. UX Design of a Big Data Visualization Application Supporting Gesture-Based Interaction with a Large Display. DNA Computing. 2017; ():248-265.

Chicago/Turabian Style

Stavroula Ntoa; Chryssi Birliraki; Giannis Drossis; George Margetis; Ilia Adami; Constantine Stephanidis. 2017. "UX Design of a Big Data Visualization Application Supporting Gesture-Based Interaction with a Large Display." DNA Computing , no. : 248-265.

Conference paper
Published: 01 January 2017 in Proceedings of the 12th Biannual Conference on Italian SIGCHI Chapter
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ACS Style

George Margetis; Stavroula Ntoa; Margherita Antona; Constantine Stephanidis. Interacting with augmented paper maps. Proceedings of the 12th Biannual Conference on Italian SIGCHI Chapter 2017, 18 .

AMA Style

George Margetis, Stavroula Ntoa, Margherita Antona, Constantine Stephanidis. Interacting with augmented paper maps. Proceedings of the 12th Biannual Conference on Italian SIGCHI Chapter. 2017; ():18.

Chicago/Turabian Style

George Margetis; Stavroula Ntoa; Margherita Antona; Constantine Stephanidis. 2017. "Interacting with augmented paper maps." Proceedings of the 12th Biannual Conference on Italian SIGCHI Chapter , no. : 18.

Journal article
Published: 26 July 2014 in Universal Access in the Information Society
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Pervasive computing environments have permeated current research and practice, unobtrusively augmenting existing environments with digital content. The present work, following a pervasive computing approach, proposes a framework to augment an educational environment, being a typical classroom or any studying environment. In this context, the work presented in this paper investigates unobtrusive interaction and support of active educational or studying activities through appropriate context-sensitive information. To this end, passive visual sensing is employed in order to unobtrusively perceive the current context and users’ actions, thus providing novel ways to implement natural interaction. The suitability of the proposed interaction technologies and overall approach has been demonstrated through three interactive applications integrated in the framework, each one supporting different interaction techniques and addressing different educational activities. Finally, a user experience evaluation of the three test-bed applications has been carried out, aiming to assess the applicability of the approach and the suitability of each of the proposed technologies to the educational tasks in hand.

ACS Style

George Margetis; Xenophon Zabulis; Stavroula Ntoa; Panagiotis Koutlemanis; Eleni Papadaki; Margherita Antona; Constantine Stephanidis. Enhancing education through natural interaction with physical paper. Universal Access in the Information Society 2014, 14, 427 -447.

AMA Style

George Margetis, Xenophon Zabulis, Stavroula Ntoa, Panagiotis Koutlemanis, Eleni Papadaki, Margherita Antona, Constantine Stephanidis. Enhancing education through natural interaction with physical paper. Universal Access in the Information Society. 2014; 14 (3):427-447.

Chicago/Turabian Style

George Margetis; Xenophon Zabulis; Stavroula Ntoa; Panagiotis Koutlemanis; Eleni Papadaki; Margherita Antona; Constantine Stephanidis. 2014. "Enhancing education through natural interaction with physical paper." Universal Access in the Information Society 14, no. 3: 427-447.