Browsing by Subject "Efficiency"

Now showing items 1-13 of 13

    • Conference Object  Open Access

      Contributions to efficiency issues in higher Education 

      Rizk, Nouhad J. (Department of Educational Sciences, University of Cyprus, 2003)
      The concept of effectiveness is hard to measure. There is no standard institutional process to adopt, enabling an evaluator to achieve his/her goals conforming to the default definition of effectiveness: lowering cost and ...
    • Conference Object  

      Design and simulation of automated container terminal using AGVs 

      Liu, C. I.; Jula, H.; Ioannou, Petros A. (Institute of Electrical and Electronics Engineers Inc., 2001)
      Booming in the world trade, scarcity of land for yard expansion in many ports, and deployment of new massive megaships have magnified the need for finding better ways of performing container terminal operations. High-density ...
    • Article  

      Electrically tunable spin injector free from the impedance mismatch problem 

      Ando, K.; Takahashi, S.; Ieda, J.; Kurebayashi, H.; Trypiniotis, Theodossis; Barnes, C. H. W.; Maekawa, S.; Saitoh, E. (2011)
      Injection of spin currents into solids is crucial for exploring spin physics and spintronics. There has been significant progress in recent years in spin injection into high-resistivity materials, for example, semiconductors ...
    • Conference Object  

      High efficiency video coding for ultrasound video communication in m-health systems 

      Panayides, Andreas S.; Antoniou, Zinonas C.; Pattichis, Marios S.; Pattichis, Constantinos S.; Constantinides, Anthony G. (2012)
      Emerging high efficiency video compression methods and wider availability of wireless network infrastructure will significantly advance existing m-health applications. For medical video communications, the emerging video ...
    • Article  

      Inflation and productivity shocks 

      Christofides, Louis N.; Mamuneas, Theofanis P. (2003)
      We examine whether sectoral productivity shock distributions are conditioned by inflation regimes. We conclude that this is not the case. Our results have implications for the literature on downward nominal wage rigidity ...
    • Article  

      On the use of high frequency measures of volatility in MIDAS regressions 

      Andreou, Elena (2016)
      Many empirical studies link mixed data frequency variables such as low frequency macroeconomic or financial variables with high frequency financial indicators’ volatilities, especially within a predictive regression model ...
    • Article  

      A personalization method based on human factors for improving usability of user authentication tasks 

      Belk, Marios; Germanakos, Panagiotis; Fidas, Christos A.; Samaras, George S. (2014)
      Aiming to ensure safety of operation to application providers and improve the usability of human computer interactions during authentication, this paper proposes a two-step personalization approach of user authentication ...
    • Article  

      Security for diversity: Studying the effects of verbal and imagery processes on user authentication mechanisms 

      Belk, Marios; Fidas, Christos A.; Germanakos, Panagiotis; Samaras, George S. (2013)
      Stimulated by a large number of different theories on human cognition, suggesting that individuals have different habitual approaches in retrieving, recalling, processing and storing verbal and graphical information, this ...
    • Article  

      Studying the effect of human cognition on text and image recognition CAPTCHA mechanisms 

      Belk, Marios; Germanakos, Panagiotis; Fidas, Christos A.; Spanoudis, George; Samaras, George S. (2013)
      This paper investigates the effect of individual differences in human cognition on user performance in CAPTCHA tasks. In particular, a three-month ecological valid user study was conducted with a total of 107 participants ...
    • Book  

      Studying the effect of human cognition on text and image recognition CAPTCHA mechanisms 

      Belk, M.; Germanakos, P.; Fidas, C.; Spanoudis, George C.; Samaras, G. (2013)
      This paper investigates the effect of individual differences in human cognition on user performance in CAPTCHA tasks. In particular, a three-month ecological valid user study was conducted with a total of 107 participants ...
    • Article  

      Studying the effect of human cognition on user authentication tasks 

      Belk, Marios; Germanakos, Panagiotis; Fidas, Christos A.; Samaras, George S. (2013)
      This paper studies the effect of individual differences in human cognition on user performance in authentication tasks. In particular, a text-based password and a recognition-based graphical authentication mechanism were ...
    • Article  

      Towards the personalization of CAPTCHA mechanisms based on individual differences in cognitive processing 

      Belk, Marios; Germanakos, Panagiotis; Fidas, Christos A.; Holzinger, A.; Samaras, George S. (2013)
      This paper studies the effect of individual differences on user performance related to text-recognition CAPTCHA challenges. In particular, a text-recognition CAPTCHA mechanism was deployed in a three-month user study to ...
    • Conference Object  

      The use of H.264/AVC and the emerging high efficiency video coding (HEVC) standard for developing wireless ultrasound video telemedicine systems 

      Panayides, Andreas S.; Antoniou, Zinonas C.; Pattichis, Marios S.; Pattichis, Constantinos S. (2012)
      For wireless medical video communications, the emerging high-efficiency video coding (HEVC) standard and network standards support low-delay and high-resolution video transmission, at the clinically acquired resolution and ...