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Başlık için Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu listeleme

Başlık için Elektronik ve Haberleşme Mühendisliği Bölümü Yayın Koleksiyonu listeleme

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  • Scintillations of multiwavelength Gaussian, cos, cosh and annular Gaussian beams 
    Eyyuboğlu, Halil T. (Springer, 2012-01)
    We provide the scintillation formulation for a multiwavelength source. Within this context, the scintillation aspects of Gaussian, cos, cosh and annular Gaussian beams are investigated. For all situations examined, it is ...
  • Scintillations of optical plane and spherical waves in underwater turbulence 
    Ata, Yalçın; Baykal, Yahya (Optical Soc Amer, 2014-07-01)
    The scintillation indices of optical plane and spherical waves propagating in underwater turbulent media are evaluated by using the Rytov method, and the variations in the scintillation indices are investigated when the ...
  • Scintillations of partially coherent Laguerre Gaussian beams 
    Yüceer, Mehmet; Eyyuboğlu, Halil T.; Lukin, I. P. (Springer, 2010-12)
    Scintillations of Laguerre-Gaussian (LG) beams for weak atmospheric turbulence conditions are derived for on-axis receiver positions by using Huygens-Fresnel (HF) method in semi-analytic fashion. Numerical evaluations ...
  • Scintillations of partially coherent multiple Gaussian beams in turbulence 
    Baykal, Yahya; Eyyuboğlu, Halil T.; Cai, Yangjian (Optical Soc Amer, 2009-04-01)
    For an incidence composed of partially coherent multiple Gaussian beams, Huygens-Fresnel principle-based on-axis scintillation index is formulated in a weakly turbulent homogeneous horizontal atmospheric path. Our general ...
  • Siber Güvenlik Yatırım Kararları Üzerine Literatür İncelemesi 
    Şentürk, Hakan; Çil, Celal Zaim; Sağıroğlu, Şeref (2016)
    Karmaşıklığı ve sıklığı her geçen gün artan siber saldırıların yol açtığı yüksek ekonomik zararlar ile bu saldırılara karşı korumasağlayan çok sayıda siber güvenlik teknolojisi ürünlerinin yatırım alternatifi olarak sunulduğu ...
  • Simplified uniform theory of diffraction 
    Umul, Yusuf Ziya (Optical Soc Amer, 2005-07-01)
    Simple exponential functions that approach zero for reflection and shadow boundaries are considered to cancel the infinite values of diffraction coefficients at these regions. This method is applied to a wedge diffraction ...
  • Simulator for general-type beam propagation in turbulent atmosphere 
    Arpalı, Çağlar; Yazıcıoğlu, Canan; Eyyuboğlu, Halil T.; Altay Arpalı, Serap; Baykal, Yahya (Optical Society of America, 2006-10)
    A simulator is designed in MATLAB code which gives the propagation characteristics of a general-type beam in turbulent atmosphere. When the required source and medium parameters are entered, the simulator yields the average ...
  • Sinusoidal Gaussian beam field correlations 
    Baykal, Yahya (IOP Publishing Ltd, 2012-07)
    Field correlations of sinusoidal Gaussian beams are formulated in turbulence, and specifically cos Gaussian (cG) and cosh Gaussian (chG) beam field correlations are evaluated versus the diagonal length at the receiver ...
  • SNR bounds of FSO links and its evaluation for selected beams 
    Eyyuboğlu, Halil T.; Bayraktar, Mert (Taylor&Francis Ltd, 2015)
    We formulate the signal-to-noise ratio (SNR) for free-space optical links. Upon inserting typical operating parameters, it is seen that SNR well approximates to the inverse of aperture averaged scintillation parameter. By ...
  • Spatial Generation of Gauss Beam Array for Photonic Applications 
    Arpalı, Çağlar (2019)
    In this paper, an alternative experimental method has been proposed in relevant to the generation of Gauss beam array. For this purpose,the light beams have been modeled based on the diffraction of a plane wave by an array ...
  • Speckle contrast for flat-topped field profiles 
    Baykal, Yahya (Elsevier Science Ltd, 2013-02)
    Speckle contrast is evaluated for flat-topped field profiles where the characterization and evaluation of speckle contrast are based on mathematical formulation and theoretical parameter variation. The speckle field which ...
  • Spectral shifts of general beams in turbulent media 
    Eyyuboğlu, Halil T.; Cai, Yangjian; Baykal, Yahya (IOP Publishing Ltd, 2008-01)
    Using the concept of generalized beam, by applying the extended Huygens-Fresnel principle, we derive the spectrum for partially coherent cosh-Gaussian, cos-Gaussian, Gaussian and annular Gaussian beams propagating in ...
  • Spectrum-aware and energy-adaptive reliable transport for internet of sensing things 
    Biçen, A. Ozan; Ergül, Özgür; Akan, Özgür B. (IEEE-Inst Electrical Electronics Engineers Inc, 2018-03)
    Wireless sensors equipped with cognitive radio, i.e., cognitive radio sensor networks (CRSN), can access the spectrum in an opportunistic manner and coexist with licensed users to mitigate the crowded spectrum problem and ...
  • Speech Enhancement using Maximal Overlap Discrete Wavelet Transform Method 
    Özaydın, Selma; Alak, İman Khalil (2019)
    Signal denoising for non-stationary digital signals can be effectively succeeded by using discrete wavelet transform. Selecting of a suitable thresholding method is important to minimize the loss of useful signal ...
  • State Machines using VHDL 
    Gazi, Orhan (Springer, 2021)
  • State of polarization of a stochastic electromagnetic beam in an optical resonator 
    Korotkova, Olga; Yao, Min; Cai, Yangjian; Eyyuboğlu, Halil T.; Baykal, Yahya (Optical Soc Amer, 2008-11)
    On the basis of the unified theory of coherence and polarization, we investigate the behavior of the state of polarization of a stochastic electromagnetic beam in a Gaussian cavity. Formulations both in terms of Stokes ...
  • Strategy creation, decomposition and distribution in particle navigation 
    Beldek, Ulaş; Leblebicioğlu, Kemal (Elsevier Science, 2007-02-01)
    Strategy planning is crucial to control a group to achieve a number of tasks in a closed area full of obstacles. In this study, genetic programming has been used to evolve rule-based hierarchical structures to move the ...
  • Strategy creation, decomposition and distribution in particle navigation 
    Beldek, Ulaş; Leblebicioğlu, Kemal (Elsevier, 2006)
    Strategy planning is crucial to control a group to achieve a number of tasks in a closed area full of obstacles. In this study, genetic programming has been used to evolve rule-based hierarchical structures to move the ...
  • Structural forms and energies of Nin, n = 12-14, clusters 
    Güvenç, Ziya B.; Güvenç, Dilek; Jellinek, Julius (1999)
    Equilibrium structural forms of the Nin, n = 12-14, clusters, as defined by an embedded-atom potential, are obtained using molecular dynamics and thermal quenching simulations. The isomers (locally stable geometric forms) ...
  • Structure and dynamical properties of Au-N, N=12-14 clusters: Molecular dynamics simulation 
    Yıldırım, E. K.; Atış, Murat; Güvenç, Ziya B. (World Scientific Publ CO PTE LTD, 2005-01)
    Using molecular dynamics and thermal quenching methods on the basis of Voter-Chen version of the embedded-atom method, we have studied the melting behavior of Au-N (N = 12, 13, 14) clusters. This behavior is described in ...