Browsing by Subject "Numerical analysis"

Now showing items 1-20 of 29

    • Article  

      Asymptotically optimal AR spectral estimate for multistep prediction 

      Karagrigoriou, Alex; Vonta, Filia (2000)
      This paper discusses the concept of asymptotic optimality from the frequency domain point of view making use of the direct method for multiple prediction. In particular, it is shown that with the use of a new autoregressive ...
    • Article  

      Cessation of annular Poiseuille flows of Bingham plastics 

      Chatzimina, Maria Evangelia; Xenophontos, Christos A.; Georgiou, Georgios C.; Argyropaidas, Ioannis; Mitsoulis, Evan C. (2007)
      We numerically solve the cessation of the annular Poiseuille flow of Bingham plastics for various values of the diameter ratio, using the regularized constitutive equation proposed by Papanastasiou and employing finite ...
    • Article  

      Competitive sorption of Cu(II), Eu(III) and U(VI) ions on dunite in aqueous solutions: A potentiometric study 

      Konstantinou, M.; Pashalidis, Ioannis (2010)
      The competitive sorption of Cu(II), Eu(III) and U(VI)) ions in aqueous solutions by dunite, has been investigated by potentiometry at pH 6, I = 0.1 M NaClO4 and 25°C. Numerical analysis of the experimental data supports ...
    • Article  

      Conforming spectral domain decomposition schemes 

      Karageorghis, Andreas (1997)
      Spectral domain decomposition schemes are presented for the numerical solution of second and fourth order problems. These schemes, which are formulated in the collocation framework yield spectral approximations which are ...
    • Article  

      Differential invariants for third-order evolution equations 

      Tsaousi, Christina; Tracinà, Rita; Sophocleous, Christodoulos (2015)
      We consider a general class of third order evolution equations. We construct differential invariants with the employment of the infinitesimal method that using equivalence groups. We use the differential invariants to ...
    • Doctoral Thesis  Open AccessOpen Access

      Error analysis of the Bergman kernel method with singular basis functions 

      Lytrides, Michael (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2011-06)
      Στην παρούσα διατριβή υποθέτουμε ότι το G είναι ένα φραγμένο χωρίο Jordan με κατα τμήμα σύνορο μέσα στο μιγαδικό επίπεδο και έστω ότι Ω:= / συμβολίζει το συμπλήρωμα του . Παρουσιάζουμε θεωρητικές εκτιμήσεις και αριθμητικά ...
    • Article  

      Existence and stability of traveling discrete shocks 

      Smyrlis, Yiorgos-Sokratis; Yu, S. H. (1997)
      We are concerned with existence and stability questions for finite difference schemes approximating solutions of scalar conservation laws with shocks. A suitable model for the study of the artifacts created by these schemes ...
    • Doctoral Thesis  Open AccessOpen Access

      Extensions of the Singular Function Boundary Integral Method to two and three dimensions 

      Christodoulou, Evgenia Ch. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2011-06)
      H Μέθοδος Συνοριακού Ολοκληρώματος με Ιδιάζουσες Συναρτήσεις (Singular Function Boundary Integral Method, SFBIM) αναπτύχθηκε από τους Georgiou et. al. (1996) για την αριθμητική επίλυση διδιάστατων προβλημάτων Laplace με ...
    • Article  

      Femtosecond carrier dynamics of Inx Ga1-x N thin films grown on GaN (0001): Effect of carrier-defect scattering 

      Lioudakis, Emmanouil E.; Othonos, Andreas S.; Iliopoulos, Eleftherios; Tsagaraki, K.; Georgakilas, A. (2007)
      Ultrafast carrier dynamics in ultrathin Inx Ga1-x N ternary alloys were investigated in detail, using femtosecond transient differential optical absorption measurements. Measurements were performed with probing wavelengths ...
    • Article  

      High performance solution of linear systems arising from conforming spectral approximations for non-conforming domain decompositions 

      Paprzycki, M.; Karageorghis, Andreas (1997)
      We apply a conforming spectral collocation technique to nonconforming domain decompositions. The resulting global matrices have a particular block structure. We study the performance of various direct methods of solution ...
    • Article  

      Identification and reconstruction of a small leak zone in a pipe by a spectral element method 

      Belhachmi, Z.; Karageorghis, Andreas; Taous, K. (2006)
      This paper deals with the identification of a zone permitting fluid to leak out of a drain. Using the analogy with crack identification by boundary measurements, we give uniqueness and stability results and we propose an ...
    • Article  

      Implicit-explicit BDF methods for the Kuramoto-Sivashinsky equation 

      Akrivis, Georgios; Smyrlis, Yiorgos-Sokratis (2004)
      We consider the periodic initial value problem for the Kuramoto-Sivashinsky (KS) equation. We approximate the solution by discretizing in time by implicit-explicit BDF schemes and in space by a pseudo-spectral method. We ...
    • Article  

      Linearly implicit schemes for multi-dimensional Kuramoto–Sivashinsky type equations arising in falling film flows 

      Akrivis, Georgios; Kalogirou, Anna; Papageorgiou, Demetrios T.; Smyrlis, Yiorgos-Sokratis (2015)
    • Article  

      Measurement of the top quark pT distribution 

      Affolder, T.; Akimoto, H.; Akopian, A.; Albrow, M. G.; Amaral, P.; Amendolia, S. R.; Amidei, D.; Anikeev, K.; Antos, J.; Apollinari, G.; Arisawa, T.; Asakawa, T.; Ashmanskas, W.; Azfar, F.; Azzi-Bacchetta, P.; Bacchetta, N.; Bailey, M. W.; Bailey, S.; de Barbaro, P.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Baroiant, S.; Barone, M.; Bauer, G.; Bedeschi, F.; Belforte, S.; Bell, W. H.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Bensinger, J.; Beretvas, Andrew; Berge, J. P.; Berryhill, J.; Bevensee, B.; Bhatti, A.; Binkley, M.; Bisello, D.; Bishai, M.; Blair, R. E.; Blocker, C.; Bloom, K.; Blumenfeld, B.; Blusk, S. R.; Bocci, A.; Bodek, A.; Bokhari, W.; Bolla, G.; Bonushkin, Yu Ye; Bortoletto, D.; Boudreau, J.; Brandl, A.; van den Brink, S.; Bromberg, C.; Brozovic, M.; Bruner, N.; Buckley-Geer, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Byon-Wagner, A.; Byrum, K. L.; Calafiura, P.; Campbell, M.; Carithers, W.; Carlson, J.; Carlsmith, D.; Caskey, W.; Cassada, J.; Castro, A.; Cauz, D.; Cerri, A.; Chan, A. W.; Chang, P. S.; Chang, P. T.; Chapman, J.; Chen, C.; Chen, Y. C.; Cheng, M. -T; Chertok, M.; Chiarelli, G.; Chirikov-Zorin, I.; Chlachidze, G.; Chlebana, F.; Christofek, L.; Chu, M. L.; Chung, Y. S.; Ciobanu, C. I.; Clark, A. G.; Connolly, A.; Conway, J.; Cordelli, M.; Cranshaw, J.; Cronin-Hennessy, D.; Cropp, R.; Culbertson, R.; Dagenhart, D.; D'Auria, S.; DeJongh, F.; Dell'Agnello, Simone; Dell'Orso, M.; Demortier, L.; Deninno, M.; Derwent, P. F.; Devlin, T.; Dittmann, J. R.; Donati, S.; Done, J.; Dorigo, T.; Eddy, N.; Einsweiler, K.; Elias, John E.; Engels, Eugene; Errede, D.; Errede, S.; Fan, Q.; Feild, R. G.; Fernandez, J. P.; Ferretti, C.; Field, R. D.; Fiori, I.; Flaugher, B.; Foster, G. W.; Franklin, M.; Freeman, J.; Friedman, J.; Fukui, Y.; Furic, I.; Galeotti, S.; Gallinaro, M.; Gao, T.; Garcia-Sciveres, M.; Garfinkel, A. F.; Gatti, P.; Gay, C.; Gerdes, D. W.; Giannetti, P.; Giromini, P.; Glagolev, V.; Gold, M.; Goldstein, J.; Gordon, A.; Gorelov, I.; Goshaw, A. T.; Gotra, Y.; Goulianos, Konstantin; Green, C.; Grim, G.; Gris, P.; Groer, L.; Grosso-Pilcher, C.; Guenther, M.; Guillian, G.; Guimaraes da Costa, J.; Haas, R. M.; Haber, C.; Hafen, E.; Hahn, S. R.; Hall, C.; Handa, T.; Handler, R.; Hao, W.; Happacher, F.; Hara, K.; Hardman, A. D.; Harris, R. M.; Hartmann, F.; Hatakeyama, K.; Hauser, J.; Heinrich, J.; Heiss, A.; Herndon, M.; Hill, C.; Hoffman, K. D.; Holck, C.; Hollebeek, R.; Holloway, L.; Hughes, R.; Huston, J.; Huth, J.; Ikeda, H.; Incandela, J.; Introzzi, G.; Iwai, J.; Iwata, Y.; James, E.; Jensen, H.; Jones, M.; Joshi, U.; Kambara, H.; Kamon, T.; Kaneko, T.; Karr, K.; Kasha, H.; Kato, Y.; Keaffaber, T. A.; Kelley, K.; Kelly, M.; Kennedy, R. D.; Kephart, R.; Khazins, D.; Kikuchi, T.; Kilminster, B.; Kim, B. J.; Kim, D. H.; Kim, H. S.; Kim, M. J.; Kim, S. H.; Kim, Y. K.; Kirby, M.; Kirk, M.; Kirsch, L.; Klimenko, S.; Koehn, P.; Köngeter, A.; Kondo, K.; Konigsberg, J.; Kordas, K.; Korn, A.; Korytov, A.; Kovács, Eve V.; Kroll, J.; Kruse, M.; Kuhlmann, S. E.; Kurino, K.; Kuwabara, T.; Laasanen, A. T.; Lai, N.; Lami, S.; Lammel, S.; Lamoureux, J. I.; Lancaster, J.; Lancaster, M.; Lander, R.; Latino, G.; LeCompte, T.; Lee, A. M.; Lee, K.; Leone, S.; Lewis, J. D.; Lindgren, M.; Liss, T. M.; Liu, J. B.; Liu, Y. C.; Lockyer, N.; Loken, J.; Loreti, M.; Lucchesi, D.; Lukens, P.; Lusin, S.; Lyons, L.; Lys, J.; Madrak, R.; Maeshima, K.; Maksimovic, P.; Malferrari, L.; Mangano, M.; Mariotti, M.; Martignon, G.; Martin, A.; Matthews, J. A. J.; Mayer, J.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McKigney, E.; Menguzzato, M.; Menzione, A.; Mesropian, C.; Meyer, A.; Miao, T.; Miller, R.; Miller, J. S.; Minato, H.; Miscetti, S.; Mishina, M.; Mitselmakher, G.; Moggi, N.; Moore, E.; Moore, R.; Morita, Y.; Moulik, T.; Mulhearn, M.; Mukherjee, A.; Muller, T.; Munar, A.; Murat, P.; Murgia, S.; Nachtman, J.; Nahn, S.; Nakada, H.; Nakaya, T.; Nakano, I.; Nelson, C.; Nelson, T.; Neu, C.; Neuberger, D.; Newman-Holmes, C.; Ngan, C. -Y P.; Niu, H.; Nodulman, L.; Nomerotski, A.; Oh, S. H.; Ohmoto, T.; Ohsugi, T.; Oishi, R.; Okusawa, T.; Olsen, J.; Orejudos, W.; Pagliarone, C.; Palmonari, F.; Paoletti, R.; Papadimitriou, Vaia; Pappas, S. P.; Partos, D.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pescara, L.; Phillips, T. J.; Piacentino, G.; Pitts, K. T.; Pompos, A.; Pondrom, L.; Pope, G.; Popovic, M.; Prokoshin, F.; Proudfoot, J.; Ptohos, Fotios; Pukhov, O.; Punzi, G.; Ragan, K.; Rakitine, A.; Reher, D.; Reichold, A.; Ribon, A.; Riegler, W.; Rimondi, F.; Ristori, L.; Riveline, M.; Robertson, W. J.; Robinson, A.; Rodrigo, T.; Rolli, S.; Rosenson, L.; Roser, R.; Rossin, R.; Roy, A.; Safonov, A.; Denis, R. S.; Sakumoto, W. K.; Saltzberg, D.; Sanchez, C.; Sansoni, A.; Santi, L.; Sato, H.; Savard, P.; Schlabach, P.; Schmidt, E. E.; Schmidt, M. P.; Schmitt, M.; Scodellaro, L.; Scott, A.; Scribano, A.; Segler, S.; Seidel, S.; Seiya, Y.; Semenov, A.; Semeria, F.; Shah, T.; Shapiro, M. D.; Shepard, P. F.; Shibayama, T.; Shimojima, M.; Shochet, M.; Siegrist, J.; Signorelli, G.; Sill, A.; Sinervo, P.; Singh, P.; Slaughter, A. J.; Sliwa, K.; Smith, C.; Snider, F. D.; Solodsky, A.; Spalding, J.; Speer, T.; Sphicas, Paris A.; Spinella, F.; Spiropulu, Maria; Spiegel, L.; Steele, J.; Stefanini, A.; Strologas, John; Strumia, F.; Stuart, D.; Sumorok, K.; Suzuki, T.; Takano, T.; Takashima, R.; Takikawa, K.; Tamburello, P.; Tanaka, M.; Tannenbaum, B.; Taylor, W.; Tecchio, M.; Teng, P. K.; Terashi, K.; Tether, S.; Thompson, A. S.; Thurman-Keup, R.; Tipton, P.; Tkaczyk, S.; Tollefson, K.; Tollestrup, A.; Toyoda, H.; Trischuk, W.; de Trocóniz, J. F.; Tseng, J.; Turini, N.; Ukegawa, F.; Vaiciulis, T.; Valls, J.; Vejcik, S.; Velev, G.; Vidal, R.; Vilar, R.; Volobouev, I.; Vucinic, D.; Wagner, R. G.; Wagner, R. L.; Wahl, J.; Wallace, N. B.; Walsh, A. M.; Wang, C.; Wang, M. J.; Watanabe, T.; Waters, D.; Watts, T.; Webb, R.; Wenzel, H.; Wester, W. C.; Wicklund, A. B.; Wicklund, E.; Wilkes, T.; Williams, H. H.; Wilson, P.; Winer, B. L.; Winn, D.; Wolbers, S.; Wolinski, D.; Wolinski, J.; Wolinski, S.; Worm, S.; Wu, X.; Wyss, J.; Yagil, A.; Yao, W.; Yeh, G. P.; Yeh, P.; Yoh, J.; Yosef, C.; Yoshida, T.; Yu, I.; Yu, S.; Yu, Z.; Zanetti, A.; Zetti, F.; Zucchelli, S. (2001)
      The first measurement of the true top quark PT distributon was carried out. An attempt was also made to compute a 95% confidence level upper limit on the fraction of top quarks that are produced with 225 > PT > 425 GeV/c. ...
    • 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 stationary heat conduction problems in rotationally symmetric domains 

      Smyrlis, Yiorgos-Sokratis; Karageorghis, Andreas (2006)
      We propose an efficient boundary collocation method for the solution of certain two- and three-dimensional problems of steady-state heat conduction in Isotropie bimaterials. In particular, in two dimensions we consider the ...
    • Article  

      The method of fundamental solutions for the inverse conductivity problem 

      Karageorghis, Andreas; Lesnic, D. (2010)
      In this article, we propose a simple method for detecting an inclusion Ω2 embedded in a host electrostatic medium Ω1 from a single Cauchy pair of voltage and current flux measurements on the exterior boundary of Ω1. A ...
    • Article  

      Multilevel characterizations of anisotropic function spaces 

      Kyriazis, George C. (2005)
      We present a general method for extending decomposition systems of L 2(ℝd) to decomposition systems for the anisotropic Triebel-Lizorkin and Besov spaces, Fp,qα,s and Bp,qα,s, respectively, for the full range of the indexes. ...
    • Article  

      Neighboring Optimal Guidance for Aeroassisted Orbital Transfer 

      Naidu, D. S.; Hibey, J. L.; Charalambous, Charalambos D. (1993)
      A neighboring optimal guidance scheme for a nonlinear dynamic system is devised with stochastic inputs and perfect measurements as applicable to fuel optimal control of an aeroassisted orbital transfer vehicle. For the ...
    • Conference Object  

      NUMERICAL ANALYSIS OF ANCIENT MULTI-DRUM COLUMNS WITH EPISTYLES UNDER DYNAMIC LOADINGS 

      Papaloizou, Loizos; Polycarpou, Panayiotis; Komodromos, Petros I. (International Association for Earthquake Engineering, 2008)
      In this research work, the Discrete Element Methods (DEM) is utilized to investigate the response of ancient multi-drum columns during harmonic and earthquake excitations by simulating the individual rock blocks as distinct ...