• Conference Object  

      Analysis and passive control of a four-bar linkage for the rehabilitation of upper-limb motion 

      Xydas, E. G.; Louca, Loucas S.; Mueller, A. (American Society of Mechanical Engineers, 2015)
      In the last two decades robotic rehabilitation research provided significant insight regarding the human-robot interaction, helped understand the process by which the impaired nervous system is retrained to better control ...
    • Article  

      Analysis of elderly users’ preferences and expectations on service robot’s personality, appearance and interaction 

      Kleanthous, Styliani; Christophorou, C.; Tsiourti, C.; Dantas, C.; Wintjens, R.; Samaras, George S.; Christodoulou, Eleni (2016)
      Fortunately, improvements in welfare and medical care will allow life expectancy in Europe’s population to increase by the year 2050. However, it is not always the case that living longer implies a healthier, more active ...
    • Conference Object  

      CogniMouse: On detecting users' task completion difficulty through computer mouse interaction 

      Belk, Marios; Portugal, D.; Christodoulou, Eleni; Samaras, George S. (Association for Computing Machinery, 2015)
      This paper presents a method for analyzing users' computer mouse interaction data with the aim to implicitly identify task completion difficulty while interacting with a system. Computer mouse motion streams and users' ...
    • Article  

      CogniWin – a virtual assistance system for older adults at work 

      Hanke, S.; Meinedo, H.; Portugal, D.; Belk, Marios; Quintas, J.; Christodoulou, Eleni; Sili, M.; Dias, M. S.; Samaras, George S. (2015)
      This paper presents an innovative virtual assistant system, which aims to address older adults’ needs in a professional environment by proposing promising and innovative virtual assistance mechanisms. The system, named ...
    • Article  

      Comparing Different Classifiers for Automatic Age Estimation 

      Lanitis, A.; Draganova, C.; Christodoulou, Chris C. (2004)
      We describe a quantitative evaluation of the performance of different classifiers in the task of automatic age estimation. In this context, we generate a statistical model of facial appearance, which is subsequently used ...
    • Conference Object  

      The connected vitality system: Enhancing social presence for older adults 

      Achilleos, Achilleas P.; Mettouris, Christos; Papadopoulos, George Angelos; Neureiter, K.; Rappold, C.; Moser, C.; Tscheligi, M.; Vajda, L.; Tóth, András L.; Hanak, P.; Jimenez, O.; Smit, R. (2013)
      The social isolation of older adults in Europe is a key and continuously growing issue that demands immediate attention. Older adults might feel isolated and lonely mainly because they lack human contact and social support. ...
    • Article  

      Design of a multi-interface creativity support tool for the enhancement of the creativity process 

      Sielis, George A.; Papadopoulos, George Angelos; Granić, A. (2011)
      This work examines the influence of the different working environments during the execution of a creativity process. The selection factor used for the decision is each user's learning style. For the examination of how this ...
    • Article  

      Detecting personality traces in users’ social activity 

      Kleanthous, Styliani; Herodotou, C.; Samaras, George S.; Germanakos, Panagiotis (2016)
      The effect that social media have in our lives nowadays is apparent. Many studies focused on how the differences we hold as people due to our personality, reflect our activities online. In this work we aim to exploit reports ...
    • Article  

      Do human cognitive differences in information processing affect preference and performance of CAPTCHA? 

      Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2015)
      A Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) is a widely used security defense mechanism that is utilized by service providers to determine whether the entity interacting with their ...
    • Article  

      The effects of personality type in user-centered appraisal systems 

      Lekkas, Zacharias; Tsianos, Nikos; Germanakos, Panagiotis; Mourlas, Constantinos; Samaras, George S. (2011)
      The basic objective of this paper is to make an extensive reference of a combination of concepts and techniques coming from different research areas, Psychology and Web personalization technologies, both of which focus ...
    • Article  

      Enhancing the creativity process by adding context awareness in creativity support tools 

      Sielis, George A.; Tzanavari, Aimilia; Papadopoulos, George Angelos (2009)
      The existence of creativity support tools establishes creativity as part of the Computer Science research. Therefore, the development of computational methods for the enhancement of creativity is undoubtedly a challenge. ...
    • Article  

      A human cognitive processing perspective in designing E-Commerce checkout processes 

      Belk, Marios; Germanakos, Panagiotis; Constantinides, Anthony G.; Samaras, George S. (2015)
      Designing a usable checkout process is of paramount importance for both E-Commerce and M-Commerce success. Aiming to understand human-computer interactions during checkout and improve the usability and user experience of ...
    • Article  

      Identification of an individual’s frustration in the work environment through a multi-sensor computer mouse 

      Portugal, D.; Belk, Marios; Quintas, J.; Christodoulou, Eleni; Samaras, George S. (2016)
      Older adults traditionally face major challenges at work when it comes to dealing with new technological tools. A sense of overwhelm and frustration can quickly arise under these circumstances. Continuous negative feelings ...
    • Conference Object  

      IHIP: Towards a user centric Individual Human Interaction Proof framework 

      Fidas, Christos A.; Hussmann, H.; Belk, Marios; Samaras, George S. (Association for Computing Machinery, 2015)
      A Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) is a widely used Human Interaction Proof mechanism to protect on-line services against automated software agents. Nowadays, there is a ...
    • Article  

      Implementing affect parameters in personalized web-based design 

      Lekkas, Zacharias; Tsianos, Nikos; Germanakos, Panagiotis; Mourlas, Constantinos; Samaras, George S. (2009)
      Researchers used to believe that emotional processes are beyond the scope of a scientific study. Recent advances in cognitive science and artificial intelligence, however, suggest that there is nothing mystical about ...
    • Article  

      Mobile user personalization with dynamic profiles: Time and activity 

      Panayiotou, Christoforos; Samaras, George S. (2006)
      Mobile clients present a new and more demanding breed of users. Solutions provided for the desktop users are often found inadequate to support this new breed of users. Personalization is such a solution. The moving user ...
    • Conference Object  

      A neurocomputational model of visual selective attention for human computer interface applications 

      Neokleous, Kleanthis C.; Avraamides, Marios N.; Neocleous, Costas K.; Schizas, Christos N. (2011)
      An overview of a neurocomputational model of visual selective attention that has been properly implemented is presented in this report. We briefly explain the basic components and neural interactions that comprise the model ...
    • Article  

      On supporting security and privacy-preserving interaction through adaptive usable security 

      Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2014)
      The purpose of this paper is to propose a preliminary framework for supporting usable security on the World Wide Web through adaptivity in user interface designs. In particular we elaborate the concept of "Adaptive Usable ...
    • Article  

      Performance vs. freshness in web database applications 

      Papastavrou, Stavros; Chrysanthis, Panos K.; Samaras, George S. (2014)
      In this work, we present a novel approach for the efficient materialization of dynamic web pages in e-commerce applications such as an online retail store with millions of items, hundreds of HTTP requests per second and ...
    • Conference Object  

      Personalised continuous software engineering 

      Papatheocharous, Efi; Belk, Marios; Nyfjord, J.; Germanakos, Panagiotis; Samaras, George S. (Association for Computing Machinery, Inc, 2014)
      This work describes how human factors can influence continuous software engineering. The reasoning begins from the Agile Manifesto promoting individuals and interactions over processes and tools. The organisational need ...