• ENORASI Assistive Computer Vision-based System for the Visually Impaired: A User Evaluation Study 

      Mitsou A., Koutsiou D.-C.C., Diamantis D.E., Psallidas T., Dimas G., Vasilakakis M., Kalozoumis P., Spyrou E., Perantonis S.J., Krukowski A., Iakovidis D.K. (2022)
      Visual impairment affects a significantly large number of individuals and in many cases it may disturb their daily life. This study presents a novel prototype wearable device which aims to assist them in tasks such as ...
    • Exploiting CPU voltage margins to increase the profit of cloud infrastructure providers 

      Kalogirou C., Koutsovasilis P., Antonopoulos C.D., Bellas N., Lalis S., Venugopal S., Pinto C. (2019)
      Energy efficiency is a major concern for cloud computing, with CPUs accounting a significant fraction of datacenter nodes power consumption. CPU manufacturers introduce voltage margins to guarantee correct operation. ...
    • MRSLICE: Efficient RkNN Query Processing in SpatialHadoop 

      García-García F., Corral A., Iribarne L., Vassilakopoulos M. (2019)
      Nowadays, with the continuously increasing volume of spatial data, it is difficult to execute spatial queries efficiently in spatial data-intensive applications, because of the limited computational capability and storage ...
    • Online Inter-Datacenter Service Migrations 

      Tziritas N., Khan S.U., Loukopoulos T., Lalis S., Xu C.-Z., Li K., Zomaya A.Y. (2020)
      Service migration between datacenters can reduce the network overhead within a cloud infrastructure; thereby, also improving the quality of service for the clients. Most of the algorithms in the literature assume that the ...
    • Uncertainty Driven Workflow Scheduling Using Unreliable Cloud Resources 

      Oikonomou P., Kolomvatsos K., Tziritas N., Theodoropoulos G., Loukopoulos T., Stamoulis G. (2020)
      The Cloud infrastructure offers to end users a broad set of heterogenous computational resources using the pay-as-you-go model. These virtualized resources can be provisioned using different pricing models like the unreliable ...