Now showing items 21-39 of 39

    • The network design problem with relays 

      Cabral, E. A.; Erkut, E.; Laporte, G.; Patterson, R. A. (Elsevier, 2007)
      The network design problem with relays (NDPR) is defined on an undirected graph G = (V, E, K), where V = {1, ..., n} is a vertex set, E = {(i, j) : i, j ∈ V, i < j} is an edge set. The set K = {(o(k), d(k))} is a set ...
    • A new method for the computation of all stabilizing controllers of a given order 

      Saadaoui, K.; Özgüler, A. B. (Taylor & Francis, 2005)
      A new method is given for computing the set of all stabilizing controllers of a given order for linear, time invariant, scalar plants. The method is based on a generalized Hermite-Biehler theorem and the successive application ...
    • Object-oriented query language facilitating construction of new objects 

      Alhajj, R.; Arkun, M. E. (Elsevier, 1993)
      In object-oriented database systems, messages can be used to manipulate the database; however, a query language is still a required component of any kind of database system. In the paper, we describe a query language for ...
    • On moments of discrete phase-type distributions 

      Dayar, Tuǧrul (Springer, Berlin, Heidelberg, 2005)
      Recently, an efficient and stable method to compute moments of first passage times from a subset of states classified as safe to the other states in ergodic discrete-time Markov chains (DTMCs) has been proposed. This paper ...
    • 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 the set of all stabilizing first-order controllers 

      Saadaoui, Karim; Özgüler, Arif Bülent (IEEE, 2003)
      A computational method is given for determining the set of all stabilizing proper first-order controllers for finite dimensional, linear, time invariant, scalar plants. The method is based on a generalized Hermite-Biehler theorem.
    • Optimal control of a two-stage stochastic hybrid manufacturing system with Poisson arrivals and exponential service times 

      Gökbayrak, Kağan; Selvi, Ömer (IEEE, 2005)
      Extending earli'er work on single-stage stochastic hybrid system models, we consider a two-stage stochastic hybrid system where the job arrivals are represented through a Poisson process, and the service times required to ...
    • Optimal short-time Fourier transform for monocomponent signals 

      Güven, Hüseyin Emre (IEEE, 2004)
      New methods of improving the short-time Fourier transform representation of signals have recently emerged. These methods use linear canonical transforms to bring the signal into a minimal time-bandwidth product form. Here ...
    • Projections onto convex sets (POCS) based optimization by lifting 

      Çetin, A. Enis; Bozkurt, Alican; Günay, Osman; Habiboglu, Yusuf Hakan; Köse, K.; Onaran, İbrahim; Tofighi, Mohammad; Sevimli, Rasim Akın (IEEE, 2013)
      A new optimization technique based on the projections onto convex space (POCS) framework for solving convex and some non-convex optimization problems are presented. The dimension of the minimization problem is lifted by ...
    • Pulse shape design using iterative projections 

      Güven, H. Emre; Çetin, A. Enis (IEEE, 2005-09)
      In this paper, the pulse shape design for various communication systems including PAM, FSK, and PSK is considered. The pulse is designed by imposing constraints on the time and frequency domains constraints on the ...
    • Quantum canonical transformations in star-product formalism 

      Dereli, T.; Hakioğlu, Tuğrul; Temen, A. (IOP, 2013)
      We study construction of the star-product version of three basic quantum canonical transformations which are known as the generators of the full canonical algebra. By considering the fact that star-product of c-number ...
    • Query model for object-oriented databases 

      Alhajj, Reda; Arkun, M. Erol (IEEE, 1993-04)
      A query language should be a part of any database system. While the relational model has a well defined underlying query model, the object-oriented database systems have been criticized for not having such a query model. ...
    • Reconstruction of scalar diffraction field from distributed data points over 3D space 

      Esmer, G. Bora; Uzunov, V.; Onural, Levent; Gotchev, A.; Özaktaş, Haldun M. (IEEE, 2007)
      Diffraction field computation is an important task in the signal conversion stage of the holographic 3DTV. We consider an abstract setting, where the diffraction field of the desired 3D scene to be displayed is given by ...
    • Restoration of error-diffused images using projection onto convex sets 

      Unal G.B.; Çetin, A.E. (2001)
      In this paper, a novel inverse halftoning method is proposed to restore a continuous tone image from a given half-tone image. A set theoretic formulation is used where three sets are defined using the prior information ...
    • A search method for optimal control of a flow shop system of traditional machines 

      Selvi, O.; Gokbayrak, K. (Elsevier, 2010)
      We consider a convex and nondifferentiable optimization problem for deterministic flow shop systems in which the arrival times of the jobs are known and jobs are processed in the order they arrive. The decision variables ...
    • Simple functors of admissible linear categories 

      Barker, L.; Demirel, M. (Springer, 2016)
      Generalizing an idea used by Bouc, Thévenaz, Webb and others, we introduce the notion of an admissible R-linear category for a commutative unital ring R. Given an R-linear category (Formula presented.) , we define an ...
    • Three-dimensional motion and dense-structure estimation using convex projections 

      Alatan, A. Aydın; Erdem, A. Tanju; Onural, Levent (SPIE, 1997-02)
      We propose a novel method for estimating the 3D motion and dense structure of an object form its two 2D images. The proposed method is an iterative algorithm based on the theory of projections onto convex sets (POCS) that ...
    • Towards finding global representations of the efficient set in multiple objective mathematical programming 

      Benson, H. P.; Sayin, S. (John Wiley & Sons, 1997)
      We propose and justify the proposition that finding truly global representations of the efficient sets of multiple objective mathematical programs is a worthy goal. We summarize the essential elements of a general global ...
    • Using data compression for increasing memory system utilization 

      Ozturk, O.; Kandemir, M.; Irwin, M. J. (Institute of Electrical and Electronics Engineers, 2009-06)
      The memory system presents one of the critical challenges in embedded system design and optimization. This is mainly due to the ever-increasing code complexity of embedded applications and the exponential increase seen in ...