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Browsing Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu by Title

Browsing Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu by Title

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  • Laguerre-Gaussian beam scintillation on slant paths 
    Yüceer, Mehmet; Eyyuboğlu, Halil T. (Springer, 2012-11)
    Scintillation evaluations for Laguerre-Gaussian (LG) beams for slant paths are made using Rytov approximation. On- and off-axis scintillation is formulated and calculated up to several tens of kilometers of slant distances ...
  • LED’lerin Spektrofotometride Kullanımı 
    Yurttaş, Hüseyin Galip; Özdumanlar, Sercan; Cambaz Büke, Göknur; Çil, Celal Zaim; Kamışlı, Özcan; Ertuğ, A. Mithat (2011)
    Işık yayan diyotların (Light Emitting Diode-LED) ışık yayma modunda verici olduğu, fotodiyot veya güneş pili modunda alıcı olduğu bir düzenek oluşturularak LED’lerin çeşitli ışık şiddetleri altında ürettikleri fotoakım değerleri ...
  • Literature Review on Cyber Security Investment Decisions 
    Çil, Celal Zaim; Şentürk, Hakan; Sağıroğlu, Şeref (Gazi Univ, 2016-03)
    Severe financial losses incurred by cyber security attacks with increasing complexity and frequency, as well as booming cyber security sector offering variety of products as investment options have led the focus of the ...
  • Local decision making and decision fusion in hierarchical levels 
    Beldek, Ulaş; Leblebicioğlu, Kemal (Springer, 2009-07)
    Hierarchical problem solving is preferred when the problem is overwhelmingly complicated. In such a case, the problem should better be analyzed in hierarchical levels. At each level, some temporary solutions are obtained; ...
  • Local Decision-Making in multiple levels for lottery data analysis 
    Beldek, Ulaş; Leblebicioǧlu, K. (2011)
    Sales forecasting is a common problem in economics. Lottery sales are one of the favorite issues of sales forecasting. Sales of lottery tickets depend on many economical issues and such a problem was investigated previously ...
  • Log-amplitude and phase fluctuations of higher-order annular laser beams in a turbulent medium 
    Baykal, Yahya (Optical Soc Amer, 2005-04)
    Log-amplitude and phase-correlation and structure functions of higher-order annular laser beams in a turbulent atmosphere are derived. A higher-order annular beam source is defined as the superposition of two different ...
  • Low latency hybrid structures ınvolving convolutional product like codes and space time codes 
    Gazi, Orhan; Al-Kattan, Ahmed, A. S. (Springer, 2017-01)
    In this paper, we propose new joint serially concatenated communication structures constructed from convolutional product codes and space time codes. The proposed structures are suitable for parallel processing operations ...
  • Lyapunov exponent as an indicator of phase transition in melting Pd-13 clusters 
    Kurt, Erol; Böyükata, Mustafa; Güvenç, Büşra (Royal Swedish Acad Sciences, 2006-09)
    In this study, the chaotic behaviour of Pd13 clusters is investigated in a wide total energy range. To identify interactions between atoms, the embedded atom potential is used in the computer simulation. Various analyses ...
  • M-2-factor of coherent and partially coherent dark hollow beams propagating in turbulent atmosphere 
    Yuan, Yangsheng; Cai, Yangjian; Qu, Jun; Eyyuboğlu, Halil T.; Baykal, Yahya; Korotkova, Olga (Optical Society of America, 2009-09-28)
    Analytical formula is derived for the M-2-factor of coherent and partially coherent dark hollow beams (DHB) in turbulent atmosphere based on the extended Huygens-Fresnel integral and the second-order moments of the Wigner ...
  • M-ary pulse position modulation performance in non-Kolmogorov turbulent atmosphere 
    Ata, Yalçın; Baykal, Yahya; Gökçe, Muhsin Caner (Optical Soc Amer, 2018-08-20)
    The performance of atmospheric optical wireless communication systems in terms of the bit error rate (BER) is investigated when a Gaussian laser beam propagating in non-Kolmogorov turbulence is M-ary pulse-position-modulated ...
  • Mass gain and loss of non-relativistic electrons in photon-electron interactions 
    Umul, Yusuf Ziya (Springer, 2011-06)
    It is shown that the electrons gain mass as their non-relativistic velocities increase. This process is realized by the absorption of photons in the colliding process. In an inverse manner, they loss their mass when they ...
  • Mathematical modeling of stochastic resonance systems 
    Arlı, A. Çağrı; Gazi, Orhan (2018)
    Knowledge of at which condition in a nonlinear threshold system stochastic resonance phenomena occurs, can be important in noise introduced threshold systems. A new method for mathematical modeling of stochastic resonance ...
  • Mathematical modelling of polar codes, channel combining and splitting 
    Orhan, Gazi (2019)
    In Chap. 2, we explained the decoding of polar codes in a clear and trivial manner. However, in most of the engineering sciences, it is critical to mathematically formulate the theories or techniques invented. © Springer ...
  • MATLAB simulation of multiuser detection in CDMA 
    Eyyuboğlu, Halil T. (World Acad Sci, 2005)
    This paper describes the MATLAB simulation of multiuser detection in code division multiple access (CDMA). To reach low bit error rate (BER) levels within reasonable computation times, the method of importance sampling is ...
  • Matlab Uygulamalı Sayısal Sinyal İşleme 
    Gazi, Orhan (Seçkin Yayınevi, 2019)
    Kitap, gördüğü yoğun ilgi sonucunda kısa sürede 2. Baskısını yapmıştır. Bu kitapta sayısal sinyal işleme konularını Matlab uygulamaları ile ele alınmıştır. Bunun için ilk olarak Matlab komutlarını kısa ve öz bir şekilde ...
  • MD study of energetics, melting and isomerization of aluminum microclusters 
    Böyükata, Mustafa; Güvenç, Ziya B. (Springer, 2006-09)
    Voter and Chen version of an Embedded Atom Model has been applied to study the locally stable structures, energies, melting, isomerization and growth patterns of small aluminum clusters, Al(n), in the size range of n = 2 ...
  • Method of Total Fields for Diffraction Problems between Different Media 
    Başdemir, Hüsnü Deniz (2019)
    In this present study a new method which gives the scattered field by a canonical structure between two different media is introduced. This method is applied to the half-plane with soft boundary condition. The fields are ...
  • Miniaturised microstrip bandpass filters based on Moore fractal geometry 
    Mezaal, Yaqeen S.; Ali, Jawad K.; Eyyuboğlu, Halil T. (Taylor&Francis LTD, 2015-08-03)
    This paper presents new microstrip bandpass filter design topologies that consist of dual edge-coupled resonators constructed in the form of Moore fractal geometries of second and third iteration levels. The space-filling ...
  • Minimization effects on scintillations of sinusoidal Gaussian beams in strong turbulence 
    Gerçekçioğlu, Hamza; Baykal, Yahya (IOP Publishing Ltd, 2011-11)
    Minimization effects on the on-axis scintillation index of cos Gaussian (cG) and cosh Gaussian (chG) beams are studied in strong turbulence. In our formulation, the unified solution of the Rytov method, which imposes spatial ...
  • Minimization of scintillation index against displacement parameters 
    Eyyuboğlu, Halil T.; Gerçekçioğlu, Hamza; Baykal, Yahya (Elsevier Science, 2008-09-01)
    For sinusoidal beams, minimization of scintillation index is carried out against the displacements parameters. It is found-that x-y asymmetric cosh-Gaussian beam fulfills the requirements of such optimum beam. Our minimization ...