Browsing by Subject "Mathematical models"

Now showing items 1-20 of 347

    • Conference Object  

      3-D flow of Herschel-Bulkley fluids 

      Burgos, Gilmer R.; Alexandrou, Andreas N. (ASME, 1998)
      The flow of Herschel-Bulkley fluids through a sudden 3-D square with expansion height ratio of 2:1 is studied numerically by solving the mass and momentum conservation equations along with a continuous constitutive relation. ...
    • Conference Object  

      Abduction and induction for learning models of inhibition in metabolic networks 

      Tamaddoni-Nezhad, A.; Chaleil, R.; Kakas, Antonis C.; Muggleton, S. (2005)
      This paper describes the use of a mixture of abduction and induction for the temporal modelling of the effects of toxins in metabolic networks. Background knowledge is used which describes network topology and functional ...
    • Conference Object  

      Adaptive bounding techniques for stable neural control systems 

      Polycarpou, Marios M.; Ioannou, Petros A. (IEEE, 1995)
      This paper considers the design of stable adaptive neural controllers for uncertain nonlinear dynamical systems with unknown nonlinearities. The Lyapunov synthesis approach is used to develop state-feedback adaptive control ...
    • Article  

      Adaptive control of a class of slowly time varying systems with modeling uncertainties 

      Fidan, B.; Zhang, Y.; Ioannou, Petros A. (2005)
      In a recent work, a new linear adaptive controller based on certainty-equivalence and backstepping design, which promises a level of transient and asymptotic performance comparable to that of the tuning functions adaptive ...
    • Conference Object  

      Adaptive control of an aeroelastic airbreathing hypersonic cruise vehicle 

      Kuipers, M.; Mirmirani, M.; Ioannou, Petros A.; Huo, Y. (2007)
      This paper describes an adaptive linear quadratic (ALQ) altitude and velocity tracking control algorithm for the longitudinal model of a generic airbreathing hypersonic flight vehicle. The vehicle design is inspired by a ...
    • Conference Object  

      Adaptive linear quadratic design with application to F-16 fighter aircraft 

      Huo, Y.; Mirmirani, M.; Ioannou, Petros A.; Colgren, R. (2004)
      This paper investigates an adaptive linear quadratic (ALQ) control design with its application to the longitudinal model of the F-16 fighter aircraft. The certainty equivalence principle is used to combine the adaptive law ...
    • Article  

      Adaptive nonlinear congestion controller for a differentiated-services framework 

      Pitsillides, Andreas; Ioannou, Petros A.; Lestas, Marios; Rossides, Loukas (2005)
      The growing demand of computer usage requires efficient ways of managing network traffic in order to avoid or at least limit the level of congestion in cases where increases in bandwidth are not desirable or possible. In ...
    • Article  

      Algebraic approaches for fault identification in discrete-event systems 

      Wu, Y.; Hadjicostis, Christoforos N. (2005)
      In this note, we develop algebraic approaches for fault identification in discrete-event systems that are described by Petri nets. We consider faults in both Petri net transitions and places, and assume that system events ...
    • Article  

      Algebraic properties of evolution partial differential equations modelling prices of commodities 

      Sophocleous, Christodoulos; Leach, Peter G. L.; Andriopoulos, Konstantinos (2008)
      Schwartz (J. Finance 1997
    • Conference Object  

      An Algorithm for the Selection of Physical System Model Order Based on Desired State Accuracy and Computational Efficiency 

      Sendur, P.; Peng, H.; Stein, J. L.; Louca, Loucas S. (American Society of Mechanical Engineers (ASME), 2003)
      In recent years, algorithms have been developed to help automate the production of dynamic system models, The focus of this development has been to create procedures and algorithms that use modeling metrics for generating ...
    • Article  

      Aliasing probability calculations for arbitrary compaction under independently selected random test vectors 

      Hadjicostis, Christoforos N. (2005)
      This paper discusses a systematic methodology for calculating the exact aliasing probability associated with schemes that use an arbitrary finite-state machine to compact the response of a combinational circuit to a sequence ...
    • Conference Object  

      Aliasing probability calculations in nonlinear compactors 

      Hadjicostis, Christoforos N. (2003)
      This paper discusses a systematic methodology for calculating the aliasing probability when an arbitrary finite-state machine is used to compact the response of a combinational circuit to a sequence of randomly generated ...
    • Conference Object  

      Analysis of fluctuation-induced firing in the presence of inhibition 

      Christodoulou, Chris C.; Clarkson, Trevor G.; Bugmann, Guido; Taylor, John G. (IEEE, 2000)
      This paper examines the computational role of inhibition as it moves towards balancing concurrent excitation using the biologically-inspired Temporal Noisy-Leaky Integrator (TNLI) neuron model. The TNLI incorporates ...
    • Conference Object  

      Analysis of traffic flow with mixed manual and semi-automated vehicles 

      Bose, Arnab; Ioannou, Petros A. (IEEE, 1999)
      While dedicated highways with fully automated vehicles is a far in the future objective, the introduction of semi-automated vehicles on current highways designed to operate with manually driven vehicles is a realistic near ...
    • Conference Object  

      An analytical model for the calculation of the Expected Miss Ratio in faulty caches 

      Sánchez, D.; Sazeides, Yiannakis; Aragón, J. L.; García, J. M. (2011)
      Technology scaling improvement is affecting the reliability of ICs due to increases in static and dynamic variations as well as wear-out failures. This is particularly true for caches that dominate the area of modern ...
    • Article  

      Application of abductive ILP to learning metabolic network inhibition from temporal data 

      Tamaddoni-Nezhad, A.; Chaleil, R.; Kakas, Antonis C.; Muggleton, S. (2006)
      In this paper we use a logic-based representation and a combination of Abduction and Induction to model inhibition in metabolic networks. In general, the integration of abduction and induction is required when the following ...
    • Conference Object  

      Application of artificial neural networks in the prediction of earnings 

      Falas, Tasos; Charitou, Andreas; Charalambous, Chris (IEEE, 1994)
      The feasibility of using artificial neural networks (ANNs) for predicting future earnings by stock market and capital market investors was evaluated. A multilayer perceptron feedforward neural network architecture with an ...
    • Article  

      Application of three bivariate time-varying volatility models 

      Vrontos, Ioannis D.; Giakoumatos, Stefanos G.; Dellaportas, Petros; Politis, Dimitris Nicolas (2001)
      The multivariate time-varying volatility models have recently attracted a lot of attention in the statistics/econometrics community. We apply two bivariate ARCH-GARCH models and a bivariate unobserved ARCH model to a series ...
    • Article  

      Applied reliability engineering and risk analysis 

      Karagrigoriou, Alex; Lisnianski, Anatoly; Kleyner, Andre; Gnedenko, Boris Vladimirovich; Frenkel, Ilia (2014)
      "This book presents the latest developments in the field of reliability science focusing on applied reliability, probabilistic models and risk analysis. It provides readers with the most up-to-date developments in this ...
    • Conference Object  

      Argumentation based modeling of decision aiding for autonomous agents 

      Dimopoulos, Yannis; Moraïtis, Pavlos; Tsoukiàs, A. (2004)
      Decision Aiding can be abstractly described as the process of assisting a user/client/decision maker by recommending possible courses of his action. This process has to be able to cope with incomplete and/or inconsistent ...