• Article  

      ADVISE – A framework for evaluating cloud service elasticity behavior 

      Copil, G.; Trihinas, Demetris; Truong, H. -L; Moldovan, D.; Pallis, George C.; Dustdar, S.; Dikaiakos, Marios D. (2014)
      Complex cloud services rely on different elasticity control processes to deal with dynamic requirement changes and workloads. However, enforcing an elasticity control process to a cloud service does not always lead to an ...
    • Article  

      C-eclipse: An open-source management framework for cloud applications 

      Sofokleous, Chrystalla; Loulloudes, Nicholas; Trihinas, Demetris; Pallis, George C.; Dikaiakos, Marios D. (2014)
      Cloud application portability and optimal resource allocation are of great importance in the realm of Cloud infrastructure provisioning. c-Eclipse is an open-source Cloud Application Management Framework through which users ...
    • Article  

      Continuum model for the phase behavior, microstructure, and rheology of unentangled polymer nanocomposite melts 

      Stephanou, Pavlos S.; Mavrantzas, V. G.; Georgiou, Georgios C. (2014)
      We introduce a continuum model for polymer melts filled with nanoparticles capable of describing in a unified and self-consistent way their microstructure, phase behavior, and rheology in both the linear and nonlinear ...
    • Article  

      Editorial for special issue Internet-based Content Delivery 

      Fortino, G.; Mastroianni, C.; Pallis, George C.; Pathan, M.; Vakali, Athena I. (2011)
      The main technical underpinnings of Cloud Computing infrastructures and services include virtualization, service-orientation, elasticity, multi-tenancy, power efficiency, and economics of scale. The perceived advantages ...
    • Article  

      Efficient MFS algorithms for problems in thermoelasticity 

      Karageorghis, Andreas; Marin, L. (2013)
      We propose efficient fast Fourier transform (FFT)-based algorithms using the method of fundamental solutions (MFS) for the numerical solution of certain problems in planar thermoelasticity. In particular, we consider ...
    • Article  

      Evaluating Cloud Service Elasticity Behavior 

      Copil, G.; Truong, H. -L; Moldovan, D.; Dustdar, S.; Trihinas, Demetris; Pallis, George C.; Dikaiakos, Marios D. (2015)
      To optimize the cost and performance of complex cloud services under dynamic requirements, workflows and diverse cloud offerings, we rely on different elasticity control processes. An elasticity control process, when being ...
    • Article  

      Exploring the nano-surface of collagenous and other fibrotic tissues with AFM 

      Stylianou, A.; Gkretsi, V.; Patrickios, C. S.; Stylianopoulos, T. (2017)
      Atomic force microscope (AFM) is a powerful and invaluable tool for imaging and probing the mechanical properties of biological samples at the nanometric scale. The importance of nano-scale characterization and nanomechanics ...
    • Article  

      Exploring the nano-surface of collagenous and other fibrotic tissues with AFM 

      Stylianou, A.; Gkretsi, V.; Patrickios, Costas S.; Stylianopoulos, Triantafyllos (2017)
      Atomic force microscope (AFM) is a powerful and invaluable tool for imaging and probing the mechanical properties of biological samples at the nanometric scale. The importance of nano-scale characterization and nanomechanics ...
    • Article  

      Finite Difference Schemes for the Cauchy–Navier Equations of Elasticity with Variable Coefficients 

      Bialecki, B.; Karageorghis, Andreas (2015)
      We solve the variable coefficient Cauchy–Navier equations of elasticity in the unit square, for Dirichlet and Dirichlet-Neumann boundary conditions, using second order finite difference schemes. The resulting linear systems ...
    • Article  

      An integrated system for the segmentation of atherosclerotic carotid plaque ultrasound video 

      Loizou, Christos P.; Petroudi, Styliani; Pantzaris, Marios C.; Nicolaïdes, Andrew N.; Pattichis, Constantinos S. (2014)
      The robust border identification of atherosclerotic carotid plaque, the corresponding degree of stenosis of the common carotid artery (CCA), and also the characteristics of the arterial wall, including plaque size, ...
    • Conference Object  

      JCatascopia: Monitoring elastically adaptive applications in the cloud 

      Trihinas, Demetris; Pallis, George C.; Dikaiakos, Marios D. (IEEE Computer Society, 2014)
      Over the past decade, Cloud Computing has rapidly become a widely accepted paradigm with core concepts such as elasticity, scalability and on demand automatic resource provisioning emerging as next generation Cloud ...
    • Article  

      A Kansa-Radial Basis Function Method for Elliptic Boundary Value Problems in Annular Domains 

      Liu, X. -Y; Karageorghis, Andreas; Chen, C. S. (2015)
      We employ a Kansa-radial basis function (RBF) method for the numerical solution of elliptic boundary value problems in annular domains. This discretization leads, with an appropriate selection of collocation points and for ...
    • Article  

      Managing and monitoring elastic cloud applications 

      Trihinas, Demetris; Sofokleous, Chrystalla; Loulloudes, Nicholas; Foudoulis, Athanasios; Pallis, George C.; Dikaiakos, Marios D. (2014)
      Next generation Cloud applications present elastic features and rapidly scale their comprised resources. Consequently, managing and monitoring Cloud applications is becoming a challenge. This paper showcases the functionality ...
    • Article  

      Matrix decomposition MFS algorithms for elasticity and thermo-elasticity problems in axisymmetric domains 

      Karageorghis, Andreas; Smyrlis, Yiorgos-Sokratis (2007)
      In this work, we propose an efficient matrix decomposition algorithm for the Method of Fundamental Solutions when applied to three-dimensional boundary value problems governed by elliptic systems of partial differential ...
    • Article  

      Mechanism for extrusion instabilities in polymer melts 

      Fyrillas, Marios M.; Georgiou, Georgios C.; Vlassopoulos, Dimitris; Hatzikiriakos, Savvas George (1999)
      A mechanism for explaining some of the instabilities observed during the extrusion of polymer melts is further explored. This is based on the combination of non-monotonic slip and elasticity, which permits the existence ...
    • Article  

      The method of fundamental solutions for axisymmetric acoustic scattering and radiation problems 

      Karageorghis, Andreas; Fairweather, G. (1998)
      The method of fundamental solutions (MFS) is applied to acoustic scattering and radiation for axisymmetric bodies and boundary conditions. The fundamental solution of the governing equation and its normal derivative, which ...
    • Article  

      Method of Fundamental Solutions for axisymmetric elasticity problems 

      Karageorghis, Andreas; Fairweather, G. (2000)
      We investigate the use of the Method of Fundamental Solutions (MFS) for the approximate solution of certain problems of three-dimensional elastostatics in isotropic materials. Specifically, we consider problems in which ...
    • Article  

      The method of fundamental solutions for layered elastic materials 

      Berger, J. R.; Karageorghis, Andreas (2001)
      In this paper, we investigate the application of the method of fundamental solutions to two-dimensional elasticity problems in isotropic and anisotropic single materials and bimaterials. A domain decomposition technique ...
    • Article  

      The method of fundamental solutions for problems in static thermo-elasticity with incomplete boundary data 

      Marin, L.; Karageorghis, Andreas; Lesnic, D.; Johansson, B. T. (2017)
      An inverse problem in static thermo-elasticity is investigated. The aim is to reconstruct the unspecified boundary data, as well as the temperature and displacement inside a body from over-specified boundary data measured ...
    • Article  

      The method of fundamental solutions for the detection of rigid inclusions and cavities in plane linear elastic bodies 

      Karageorghis, Andreas; Lesnic, D.; Marin, L. (2012)
      We investigate the numerical reconstruction of smooth star-shaped voids (rigid inclusions and cavities) which are compactly contained in a two-dimensional isotropic linear elastic body from a single non-destructive measurement ...