• Article  

      An analytical solution for rapidly distorted turbulent shear flow in a rotating frame 

      Akylas, Evaggelos; Kassinos, Stavros C.; Langer, A. C. (2006)
      In this study we apply rapid distortion theory to the case of nonstratified homogeneous turbulence that is sheared in a frame that counter-rotates at a rate that matches in magnitude the rotation associated with the mean ...
    • Conference Object  

      Analytical target cascading for the design of an advanced technology heavy truck 

      Louca, Loucas S.; Kokkolaras, M.; Delagrammatikas, G. J.; Michelena, N. F.; Filipi, Z. S.; Papalambros, P. Y.; Assanis, D. N. (American Society of Mechanical Engineers (ASME), 2002)
      Analytical target cascading (ATC) is a methodology that can be used during the early development stages of large and complex systems for propagating desirable overall product targets to appropriate individual specifications ...
    • Article  

      Assessing the accuracy of wall concentration estimation based on averaged permeate velocity in spacer-filled Reverse Osmosis (RO) membrane systems 

      Ma, S.; Kassinos, Stavros C.; Fatta-Kassinos, Despo (2006)
      The accuracy of estimations of wall concentration using the constant (averaged) permeate velocity method was assessed in both empty and spacer-filled reverse osmosis (RO) channels under various operation conditions, based ...
    • Article  

      Assessing the accuracy of wall concentration estimation based on averaged permeate velocity in spacer-filled Reverse Osmosis (RO) membrane systems 

      Ma, S.; Kassinos, Stavros C.; Fatta-Kassinos, Despo (2006)
      The accuracy of estimations of wall concentration using the constant (averaged) permeate velocity method was assessed in both empty and spacer-filled reverse osmosis (RO) channels under various operation conditions, based ...
    • Article  

      Atemplate-based modeling approach for system design: Theory and implementation 

      Stein, J. L.; Louca, Loucas S. (1996)
      Previous research has developed search algorithms for deducing Proper Models (minimum complexity models with physically meaningful parameters) of dynamic systems. It has also been proposed that these Proper Models can be ...
    • Conference Object  

      Bond graph based modal decomposition of systems with non-proportional damping 

      Louca, Loucas S. (Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Street, Nicosia 1678, CyprusCorrespondence Address: Louca, L.S.Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Street, Nicosia 1678, Cyprusemail: lslouca@ucy.ac.cy, 2012)
      Modal analysis of lumped parameter and continuous dynamic linear systems is extensively used to study their dynamic behavior and controller design. In both cases, a reduction of the model size that does not degrade accuracy ...
    • Conference Object  

      Bond graph based modal representations and model reduction of lumped parameter systems 

      Louca, Loucas S. (Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Street, Nicosia 1678, CyprusCorrespondence Address: Louca, L.S.Department of Mechanical and Manufacturing Engineering, University of Cyprus, 75 Kallipoleos Street, Nicosia 1678, Cyprusemail: lslouca@ucy.ac.cy, 2006)
      Modal analysis is extensively used to study dynamic behavior of continuous and lumped parameter linear systems. More specifically, modal analysis can be used for the analysis and controller design of dynamic systems. In ...
    • Article  

      A broadband Wilkinson balun using microstrip metamaterial lines 

      Antoniades, Marcos A.; Eleftheriades, G. V. (2005)
      A metamaterial balun that converts a single-ended input to a differential output over a large bandwidth is presented. The device also exhibits excellent return loss, isolation, and through characteristics over the same ...
    • Article  

      Comments on "A modified reachability tree approach to analysis of unbounded Petri nets" 

      Ru, Y.; Wu, W.; Hadjicostis, Christoforos N. (2006)
      The above paper introduced the construction of a modified reachability tree (MRT) for (unbounded) Petri nets and its application to reachability, liveness, and deadlock analysis. This note shows via a counterexample that ...
    • Article  

      A compact and low-profile metamaterial ring antenna with vertical polarization 

      Qureshi, F.; Antoniades, Marcos A.; Eleftheriades, G. V. (2005)
      A compact (λ 0/11 footprint) and low-profile (λ 0/28 height) metamaterial ring antenna is proposed using two metamaterial unit cells. Each constituent unit cell consists of negative-refractive-index (NRI) microstrip ...
    • Conference Object  

      Compact, linear, lead/lag phase shifters using negative refractive index metamaterials 

      Antoniades, Marcos A.; Eleftheriades, G. V. (2003)
      A new type of phase shifter using cascaded sections of NRI metamaterials and PRI transmission lines is proposed, which offers some significant advantages over conventional delay lines. The phase shifter is compact in size, ...
    • Conference Object  

      Complexity of distributed parameter bond graph models 

      Louca, Loucas S. (The Society for Modeling and Simulation International, 2014)
      Modeling metrics and algorithms that assist the development of dynamic system models are essential for efficient use of modeling and simulation in everyday engineering tasks. Various modeling procedures have been proposed ...
    • Doctoral Thesis  Open Access

      Computational modeling of visual selective attention 

      Neokleous, Kleanthis (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2011-05)
      Η μελέτη της διατριβής στοχεύει να συνεισφέρει σημαντικά στη μελέτη της ανθρώπινης προσοχής, και πιο συγκεκριμένα της οπτικής επιλεκτικής προσοχής κυρίως μέσω της δημιουργίας ενός γνωστικού υπολογιστικού μοντέλου βασιζόμενο ...
    • Article  

      A consistent velocity approximation for variable-density flow and transport in porous media 

      Albets-Chico, X.; Kassinos, Stavros C. (2013)
      Using a finite-volume nodal-based code, we introduce a new consistent numerical scheme for approximating the seepage velocity in variable-density flow in porous media. It has been known from previous works that the lack ...
    • Article  

      Construction of nearly orthogonal Latin hypercube designs 

      Efthimiou, Ifigenia; Georgiou, Stelios N.; Liu, Min-Qian (2015)
      The Latin hypercube design (LHD) is a popular choice of experimental design when computer simulation is used to study a physical process. In this paper, we propose some methods for constructing nearly orthogonal Latin ...
    • Article  

      A CPS leaky-wave antenna with reduced beam squinting using NRI-TL metamaterials 

      Antoniades, Marcos A.; Eleftheriades, G. V. (2008)
      A reduced beam-squinting printed leaky-wave antenna (LWA) is proposed, comprising cascaded negative-refractive-index transmission-line (NRI-TL) metamaterial unit cells. Each NRI-TL unit cell is implemented in co-planar ...
    • Conference Object  

      Data broadcasting in ad-hoc networks of pervasive devices: Modeling and simulations 

      Wang, L.; Charalambous, Charalambos D.; Makrakis, D.; Vlajic, N. (2003)
      With the rapid growth of wireless networks and demand for services, wireless data broadcast has become a fundamental communication mechanism to enhance the services in ad hoc network of pervasive devices. This work focuses ...
    • Article  

      Determination of the number of errors in DFT codes subject to low-level quantization noise 

      Takos, G.; Hadjicostis, Christoforos N. (2008)
      This paper analyzes the effects of quantization or other low-level noise on the error correcting capability of a popular class of real-number Bose-Chaudhuri-Hocquenghem (BCH) codes known as discrete Fourier transform (DFT) ...
    • Conference Object  

      Determining model accuracy as a function of inputs and system parameters 

      Sohns, B. J.; Stein, J. L.; Louca, Loucas S. (American Society of Mechanical Engineers (ASME), 2004)
      Vital to the effectiveness of simulation-based design is having a system model of known quality. Previous research introduced an algorithm called AVASIM for assessing model validity systematically and quantitatively. AVASIM ...
    • Conference Object  

      Detuning detection in induction motors 

      Rodríguez-Cortés, H.; Hadjicostis, Christoforos N.; Stankovic, A. M. (2004)
      In this article we present a model-based scheme to detect detuned indirect field oriented controllers in current fed induction motors. The detection scheme is based on differential geometric techniques. Numerical simulations ...