Now showing items 16485-16504 of 25401

    • On robust solutions to linear least squares problems affected by data uncertainty and implementation errors with application to stochastic signal modeling 

      Pınar, M. Ç.; Arıkan, Orhan (Elsevier, 2004)
      Engineering design problems, especially in signal and image processing, give rise to linear least squares problems arising from discretization of some inverse problem. The associated data are typically subject to error in ...
    • On Rogers-Ramanujan functions, binary quadratic froms and eta-quotients 

      Berkovich, A.; Yeşilyurt, H. (American Mathematical Society, 2014)
      In a handwritten manuscript published with his lost notebook, Ramanujan stated without proofs forty identities for the Rogers-Ramanujan functions. We observe that the function that appears in Ramanujan's identities can be ...
    • On Roth, Korth, and Silberschatz's extended algebra and calculus for nested relational databases 

      Tansel, A. U.; Garnett, Lucy (1992)
      We discuss the issues encountered in the extended algebra and calculus languages for nested relations defined by Roth, Korth, and Silberschatz. Their equivalence proof between algebra and calculus fails because of the ...
    • On secrecy rate analysis of spatial modulation and space shift keying 

      Aghdam, Sina Rezaei; Duman, Tolga M.; Di Renzo, M. (IEEE, 2015)
      Spatial modulation (SM) and space shift keying (SSK) represent transmission methods for low-complexity implementation of multiple-input multiple-output (MIMO) wireless systems in which antenna indices are employed for data ...
    • On sections and tails of power series 

      Zheltukhina, Natalya (Bilkent University, 2002)
      The thesis is devoted to the study of connections between properties of a power series and properties of its sections and tails. Power series having sections or tails with multiply positive coefficients are considered ...
    • On semidefinite bounds for maximization of a non-convex quadratic objective over the ℓ1 unit ball 

      Pınar, M. Ç.; Teboulle, M. (E D P Sciences, 2006)
      We consider the non-convex quadratic maximization problem subject to the ℓ1 unit ball constraint. The nature of the l1 norm structure makes this problem extremely hard to analyze, and as a consequence, the same difficulties ...
    • On separating cover inequalities for the multidimensional knapsack problem 

      Bektas, T.; Oğuz, O. (Elsevier, 2007-06)
      We propose a simple and a quite efficient separation procedure to identify cover inequalities for the multidimensional knapsack problem. It is based on the solution of a conventional integer programming model. Solving ...
    • On Smith predictor-based controller design for systems with integral action and time delay 

      Taşdelen, Uğur; Özbay, Hitay (IEEE, 2013-06)
      A new Smith predictor based controller is proposed for systems with integral action and flexible modes under input-output time-delay. The design uses controller parametrization and aims to achieve a set of performance and ...
    • On smooth manifolds with the homotopy type of a homology sphere 

      Erdal, M. A. (Elsevier, 2017-11-22)
      In this paper we study M(X), the set of diffeomorphism classes of smooth manifolds with the simple homotopy type of X, via a map Ψ from M(X) into the quotient of K(X)=[X,BSO] by the action of the group of homotopy classes ...
    • On Smoothness of the Green Function for the Complement of a Rarefied Cantor-Type Set 

      Altun, M.; Goncharov, A. (Springer Verlag, 2011)
      Smoothness of the Green functions for the complement of rarefied Cantor-type sets is described in terms of the function Φ(δ)=(1/log 1/δ) that gives the logarithmic measure of sets. Markov's constants of the corresponding ...
    • On some algebraic properties of semi-discrete hyperbolic type equations 

      Habibullin, I.; Pekcan, A.; Zheltukhina, N. (Scientific and Technical Research Council of Turkey (TUBITAK), 2008)
      Nonlinear semi-discrete equations of the form tx(n + 1) = f(t(n),t(n + 1),tx(n)) are studied. An adequate algebraic formulation of the Darboux integrability is discussed and an attempt to adopt this notion to the classification ...
    • On some of the simple composition factors of the biset functor of P-permutation modules 

      Karagüzel, Çisil (Bilkent University, 2016-07)
      Let k be an algebraically closed field of characteristic p, which is a prime, and C denote the field of complex numbers. Given a finite group G, letting ppk(G) denote the Grothendieck group of p-permutation kG-modules, we ...
    • On some umbrellas 

      Aracagök, Z. (Routledge, 2008-09)
      Before I introduce the subject of this article, I should confess that its subject is the subject itself. The question of the subject always brings along a question of location and, therefore, a question of topology. ...
    • On stability and efficiency in different economic environments 

      Karakaya, Mehmet (Bilkent University, 2011)
      This thesis consists of four main chapters. In the first main part, hedonic coalition formation games where each player’s preferences rely only upon the members of her coalition are studied. A new stability notion under ...
    • On stability of interval matrices 

      Sezer, M. E.; Siljak, D. D. (Institute of Electrical and Electronics Engineers, 1994-02)
      New sufficient, and sometimes necessary and sufficient conditions, are obtained for Schur- and Hurwitz-stability of interval matrices by relying on the concept of connective stability and M-matrices. The necessity part is ...
    • On stabilizing with PID controllers 

      Saadaoui, K.; Özgüler, A. Bülent (IEEE, 2007-06)
      In this paper we give an algorithm that determines the set of all stabilizing proportional-integral-derivative (PID) controllers that places the poles of the closed loop system in a desired stability region S. The algorithm ...
    • On stable controller design for robust stabilization of time delay systems 

      Yücesoy, Veysel; Özbay, Hitay (IFAC, 2015)
      This paper studies the problem of robust stabilization of an infinite dimensional plant by a stable and possibly low order controller. The plant of interest is assumed to have only finitely many simple unstable zeros, ...
    • On stock rationing policies for continuous review inventory systems 

      Bulut, Önder (Bilkent University, 2005)
      Rationing is an inventory policy that allows prioritization of different demand classes. In this thesis, we analyze the stock rationing policies for continuous review systems. We clarify some of the ambiguities present ...
    • On Strawsonian contexts 

      Akman, V. (John Benjamins Publishing Company, 2005)
      P.F. Strawson proposed in the early seventies a threefold distinction regarding how context bears on the meaning of 'what is said' when a sentence is uttered. The proposal was somewhat tentative and, being aware of this ...
    • On structural sources of the 1994 Turkish crisis: a CGE modelling analysis 

      Yeldan, A. E. (Routledge, 1998)
      This paper investigates the impact of the Turkish public sector imbalances on the evolution of the economic crisis during 1990-93. A computable general equilibrium model is used. The theoretical basis of the model rests ...