Browsing Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics by Title
Now showing items 1219-1238 of 1633
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Article
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Conference Object
Relation between velocities and global maximum for Gaussian seas
(2004)We study the probability distribution of the height of global maximum for a Gaussian random field evolving in time. Particularly, we discuss the role of the wave kinematics. It is observed that taking into account time ...
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Relative Entropy for Hyperbolic–Parabolic Systems and Application to the Constitutive Theory of Thermoviscoelasticity
(2018)We extend the relative entropy identity to the class of hyperbolic–parabolic systems whose hyperbolic part is symmetrizable. The resulting identity, in the general theory, is useful for providing stability of viscous ...
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A remark on the Glimm scheme for inhomogeneous hyperbolic systems of balance laws
(2015)General hyperbolic systems of balance laws with inhomogeneous flux and source are studied. Global existence of entropy weak solutions to the Cauchy problem is established for small BV data under appropriate assumptions on ...
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Remarks on a paper by Chao-Ping Chen and Feng Qi
(2006)In a recent paper, Chao-Ping Chen and Feng Qi (2005) established sharp upper and lower bounds for the sequence Pn := 1.3...(2n-1)/2.4...2n. We show that their result follows easily from a theorem of G. N Watson published ...
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Remarks on a sine polynomial
(2009)Let n ≥ 0 be an integer. Then we have for x ε (0, π) : ∑k=0 n(2n+1 n-k)sin((2k+1)x)/2k+1 ≤ 8 n-rfnet-temp!/(2n+1)!! The upper bound is best possible. This complements a result of Fejér, who proved that the sine polynomial ...
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Remarks on some completely monotonic functions
(2006)Applying the Euler-Maclaurin summation formula, we obtain upper and lower polynomial bounds for the function frac(x, ex - 1), x > 0, with coefficients the Bernoulli numbers Bk. This enables us to give simpler proofs of ...
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Reply to 'Comments on the robust stability analysis of adaptive controllers using normalizations' by P. P. Khargonekar and R. Ortega
(1990)The author addresses a statement in the above-titled paper (ibid., vol. 34, no. 4, P. 478, Apr. 1989) that the proofs in four earlier papers, including two of which he is a coauthor, failed to establish that the proposed ...
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Reply to “Comments on the Robust Stability Analysis of Adaptive Controllers Using Normalizations”
(1990)
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Article
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Doctoral Thesis
Representations of Hecke algebras of type Dn
(University of London, 1993)
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Book Chapter
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Article
Residual-based block bootstrap for unit root testing
(2003)A nonparametric, residual-based block boostrap procedure is proposed in the context of testing for integrated (unit root) time series. The resampling procedure is based on weak assumptions on the dependence structure of ...
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Residual-based block bootstrap for unit root testingAAA
(2003)A nonparametric, residual-based block boostrap procedure is proposed in the context of testing for integrated (unit root) time series. The resampling procedure is based on weak assumptions on the dependence structure of ...
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Residue Currents and Bezout Identities
(1993)The objective of this monograph is to present a coherent picture of the almost mysterious role that analytic methods and, in particular, multidimensional residue have recently played in obtaining effective estimates for ...
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Retrospective Bayesian outlier detection in INGARCH series
(2013)INGARCH models for time series of counts arising, e.g., in epidemiology or finance assume the observations to be Poisson distributed conditionally on the past, with the conditional mean being an affine-linear function of ...
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Retrospective change detection for binary time series models
(2014)Detection of changes in health care performance, financial markets, and industrial processes have recently gained momentum due to the increased availability of complex data in real-time. As a consequence, there has been a ...
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Conference Object
Rheological effects of strusture breakdown in semisolid slurries
(2004)An essential element for the integration of the semisolid metal (SSM) process in the production of complex commercial components is the availability of accurate mathematical and computational tools that could describe both ...