Department of Mathematics, Conference / Seminar

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Publication (147)

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Özbudak, Ferruh (31)
Tezer, Münevver (23)
Bozkaya, Canan (16)
Kaya Merdan, Songül (14)
Doğanaksoy, Ali (8)

General Physics and Astronomy (6)
MHD (5)
Boolean functions (3)
Cryptography (3)

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1993 - 1999 (9)
2000 - 2009 (20)
2010 - 2020 (118)

Recent Submissions

BAA Semineri – Matematikte Sonsuzluklar
Ozan, Yıldıray (2020-6-06)
On The Extrapolated Vms-Pod Method Forıncompressible Flows
Güler Eroğlu, Fatma; Kaya Merdan, Songül (2019-12-11)
In this study, proper orthogonal decomposition based reduced-order modelling and variational multiscale stabilization method are utilized for the incompressible Navier-Stokes equations. In addition, the difficulties result...
k-existentially closed groups
Kuzucuoğlu, Mahmut (2019-10-21)
A Numerical Study of a Modular Sparse Grad-Div Stabilization Method for Boussinesq Equations
Demir, Medine; Kaya Merdan, Songül (2019-10-10)
This study presents a modular sparse grad-div stabilization method for solving the Boussinesq equations. Unlike the usual grad-div stabilization which produces fully coupled block matrices, the proposed stabilization metho...
A CSCM approximation of steady MHD flow and heat transfer between parallel plates with hydrodynamic slip and convective boundary conditions
Tezer, Münevver; Türk, Önder (null; 2019-10-04)
The steady magnetohydrodynamic (MHD) flow together with its heat transfer between parallel plates is considered in which the electrically conducting fluid has temperature dependent properties such as viscosity, thermal and...
Counting Boolean Functions with Faster Points
Salagean, Ana; Özbudak, Ferruh (null; 2019-03-31)
Duan and Lai introduced the notion of “fast point” for a Boolean function f as being a direction a so that the algebraic degree of the derivative of f in direction a is strictly lower than the expected deg (f) - 1. Their s...
Subspace Packings
Etzion, Tuvi; Kurz, Sascha; Otal, Kamil; Özbudak, Ferruh (2019-03-31)
The Grassmannian Gq(n,k) is the set of all k-dimensional subspaces of the vector space Fnq. It is well known that codes in the Grassmannian space can be used for error-correction in random network coding. On the other hand...
Fdm solution of mhd flow in a rectangular duct with slipping and partly insulated partly conducting side walls
Arslan, Sinem; Tezer, Münevver (IOP Publishing; 2019-01-01)
The magnetohydrodynamic (MHD) flow of an electrically conducting fluid is considered in a long channel (pipe) of rectangular cross-section in which the fluid is driven by a pressure gradient and the flow is steady, laminar...
Construction of Some Codes Suitable for Both Side Channel and Fault Injection Attacks
Carlet, Claude; GÜNERİ, CEM; Mesnager, Sihem; Özbudak, Ferruh (2018-12-30)
Using algebraic curves over finite fields, we construct some codes suitable for being used in the countermeasure called Direct Sum Masking which allows, when properly implemented, to protect the whole cryptographic block c...
Characterizations of Partially Bent and Plateaued Functions over Finite Fields
Mesnager, Sihem; Özbudak, Ferruh; SINAK, AHMET (2018-12-30)
Partially bent and plateaued functions over finite fields have significant applications in cryptography, sequence theory, coding theory, design theory and combinatorics. They have been extensively studied due to their vari...
A Numerical study of second order time stepping methods for the boussinesq equations
Demir, Medine; Çıbık, Aytekin Bayram; Kaya Merdan, Songül (null; 2018-10-21)
The Boussinesq approximation is a way to solve nonisothermall flow such as natural convection prob-lems, without having to solve for the full compressible formulation of the Navier-Stokes equations.Natural convection is re...
Numerical Aspects of POD-Based Reduced-Order Modeling forDarcy-Brinkman Equations
Güler Eroğlu, Fatma; Kaya Merdan, Songül (2018-10-21)
We propose, analyze and test a reduced order modelling with proper orthogonal decomposition (POD) method for the modeling to flows governed by double diffusive convection, which models flow driven by two potentials with di...
MHD natural convection flow in a porous cavity
Bozkaya, Canan (null; 2018-09-13)
A numerical investigation of natural convection flow in a cavity filled with a fluid-saturated porous medium in the presence of uniform magnetic field is performed. The steady, viscous, incompressible flow inside the porou...
Parameter Identification in MHD Duct Flow Cauchy Problem using the DRBEM
Tezer, Münevver; Aydin, Cemre (2018-08-31)
In this study, the Hartmann number (Ha) is identified through the inverse formulation of Cauchy problem for magnetohydrodynamic (MHD) flow in a duct with insulated but no-slip or variably slipping walls. The solutions for ...
MHD Natural Convection Ferrofluid Flow in Semi-Annulus Enclosures
Sidre Oǧlakkaya, F.; Bozkaya, Canan (2018-08-31)
This study examines the natural convection flow and the heat transfer of a water-based ferrofluid consisting Fe3O4 nanoparticles in a semi-annulus cavity with a circular outer and sinusoidal inner walls under the effect of...
MHD flow in a circular pipe with arbitrarily conducting slipping walls
Senel, P.; Tezer, Münevver (2018-08-31)
In this study, the magnetohydrodynamic (MHD) flow is simulated in a circular pipe with slipping and arbitrarily conducting boundary. The 2D governing coupled equations in terms of the velocity and the induced magnetic fiel...
Data sharing under confidentiality
Başer, Erdem; Hülagu, Timur; Akyıldız, Ersan; Bilgen, Adnan; Cenk, Murat; Keskinkurt-paksoy, İrem; Kestel, Sevtap Ayşe (2018-08-31)
Central Bank of the Republic of Turkey presents an approach to address the data sharing dilemma of maximizing the benefit for academic research while ensuring compliance with applicable data confidentiality legislations. T...
The application of BEM to MHD flow and heat transfer in a rectangular duct with temperature dependent viscosity
Ebren Kaya, Elif; Tezer, Münevver ( EC LTD.; 2018-07-11)
The steady, laminar, fully developed MHD flow of an incompressible, electrically conducting fluid with temperature dependent viscosity is studied in a rectangular duct together with its heat transfer. Although the induced ...
A Numerical Investigationof VMS-POD Model for Darcy-Brinkman Equations
Güler Eroğlu, Fatma; Kaya Merdan, Songül; Rebholz, Leo (2018-07-06)
We extend the variational multiscale proper orthogonal decomposition reduced order modeling (VMSPOD) to flows governed by double diffusive convection. We present stability and convergence analyses for it, and give results ...
Numerical analysis of a Family of Second Order Time Stepping Methods for Boussinesq Equations
Çıbık, Aytekin Bayram; Demir, Medine; Kaya Merdan, Songül (null; 2018-07-06)
—This report considers a family of second order time stepping schemes for Boussinesq system. The scheme uses the idea of curvature stabilization in which the discrete curvature of the solutions is added together with the l...
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