Now showing items 32-51 of 89

    • eal-Time Video Frame Differentiator Based on DDR3 SDRAM Memory Interface 

      Davutoğlu, Doğancan (2018-08)
      In this paper, design of a real-time video frame differentiator based on an external memory interface is proposed. Furthermore, implementation and simulation processes of the design is discussed. The proposed design is ...
    • EEG Sinyalinin Anestezi Sırasındaki Topografik ve Zamansal İzge Analizi 

      Gürkan, Güray; Uslu, Atilla; Cebeci, Bora; Erdoğan, Ezgi T.; Kaşıkçı, Itır; Seyhan, Tülay Ö.; Akan, Aydın; Demiralp, Tamer (IEEE, 2018)
      Bu çalışmada EEG sinyalinin anestezi altındaki izgesel değişimi, zamansal ve uzaysal olarak incelenmiştir. Bu amaçla kullanılan yöntemler arasında, günümüz anestezi derinliği takip cihazlarının da kullandığı bilinen ...
    • EOG Sinyalleri için Sınıflandırma Algoritmalarının Karşılaştırılması 

      Gürkan, Güray; Gürkan, Serkan; Uşaklı, Ali Bülent (IEEE, 2012)
      Bu bildiride, belirli göz hareketleri sonucu elde edilen elektrookülogram (EOG) sinyallerinin sınıflandırılması için Destek Vektör Makinesi (DVM) ve Yapay Sinir Ağı (YSA) yöntemleri karşılaştırılmaktadır. Göz hareketleri ...
    • Estimation Of The Respiratory System Parameters 

      Sert, Görkem; Saatçı, Esra; Gürkan, Güray; Akan, Aydın (European Assoc Signal Speech & Image Processing-Eurasip, Po Box 74251, Kessariani, 151 10, Greece, 2011)
      In clinical respiratory studies, resistance and the lung compliance are two important respiratory parameters that are often measured by physicians. In this work, Respiratory signals (mask pressure, airway flow, and lung ...
    • Four-quadrant switch-mode gyrator 

      Dinçbakır, Cenk; Bilgiç, Mehmet Oruç (IEEE, 2008-05-23)
      A gyrator design based on an inductor coupled double bridge converter is presented. It is shown that this gyrator can operate in four-quadrant mode by using bi-directional MOS switches without the necessity of any feedback ...
    • Frequency estimation for monophonical music by using a modified VMD method 

      Öztürk Şimşek, Berrak; Akan, Aydın (IEEE, 345 E 47Th St, New York, Ny 10017 USA, 2017)
      In this paper, a new Variational Mode Decomposition (VMD) is introduced, and applied to the fundamental frequency estimation of monophonical Turkish maqam music. VMD is a method to decompose an input signal into an ensemble ...
    • Fundamental frequency estimation for heterophonical Turkish music by using VMD 

      Unknown author (IEEE, 345 E 47th St, New York, Ny 10017 USA, 2016)
      In this study, a new method is presented for the fundamental frequency estimation of heterophonical Turkish makam music recordings that include percusssive instrument by using Variational Mode Decomposition (VMD). VMD is ...
    • Fundamental Frequency Estimation for Monophonical Turkish Music by using VMD 

      Öztürk Şimşek, Berrak; Akan, Aydın; Bozkurt, Barış (IEEE, 345 E 47Th St, New York, Ny 10017 USA, 2015-05-16)
      In this study, a new method is presented for the fundamental frequency estimation of Turkish makam music recordings by using Variational Mode Decomposition (VMD). VMD is a method to decompose an input signal into an ensemble ...
    • Fuzzy logic based control of switched reluctance motor to reduce torque ripple 

      Derdiyok, A.; İnanç, N.; Özbulur, Veysel; Pastacı, Halit; Bilgiç, Mehmet Oruç (IEEE, 1997)
      This paper presents torque ripple reduction of a switched reluctance motor (SRM) by using a fuzzy speed controller. For this purpose, current control is applied with a fuzzy speed controller. The fuzzy controller adjusts ...
    • Generalised prefix for space-time block-coded orthogonal frequency division multiplexing wireless systems over correlated multiple-input multiple-output channels 

      Yıldız, Hakan; Acar, Yusuf; Cooklev, Todor; Doğan, Hakan (Inst Engineering Technology-Iet, Michael Faraday House Sıx Hılls Way Stevenage, Hertford Sg1 2Ay, England, 2014-06-12)
      Space-time block coding (STBC) orthogonal frequency division multiplexing (OFDM) is known to improve the reliability of broadband communication over wireless links. However, this technique suffers from a performance loss ...
    • Generalized Gauss Distribution Noise Model for Respiratory Parameter Estimation 

      Saatçı, Esra; Akan, Aydın (Ieee, 345 E 47Th St, New York, Ny 10017 Usa, 2009)
      In this studs, measurement noise is modelled as a Generalized Gauss Distribution and a new method is presented to estimate the model parameters. The estimator algorithm consists of the Kurtosis method, Kalman iterarions ...
    • Generalized Prefix Approach for Alamouti Coded OFDM Systems over Gaussian Channels Correlated in Space 

      Acar, Yusuf; Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014)
      In this ivorkt, generalized frelix (GP) lbr space time block coded orthogonal frequency division multiplexing (STBC-OFDM) systems is considered in the presence of correlated channel. The 2x2 STBC case, in practice, lead ...
    • Graphene actively Q-switched lasers 

      Li, Diao; Xue, Hui; Qi, Mei; Wang, Yadong; Akşimşek, Sinan; Chekurov, Nikolai; Kim, Wonjae; Li, Changfeng; Riikonen, Juha; Ye, Fangwei; Dai, Qing; Ren, Zhaoyu; Bai, Jintao; Hasan, Tawfique; Lipsanen, Harri; Sun, Zhipei (2017-05-05)
      Graphene electro-optic modulators (GEOMs) are emerging as a viable alternative to conventional material-based modulators mainly due to their broadband and ultrafast performance. These GEOMs with combined advantages of small ...
    • Graphene-MoS2-Metal Hybrid Structures for Plasmonic Biosensors 

      Akşimşek, Hüseyin Sinan; Jussila, Henri; Sun, Zhipei (Elsevier, 2018-12-01)
      Surface Plasmon Resonance (SPR) biosensors are widely used for real-time label-free detection in medical diagnostics, pharmaceutical researches and food safety. Although there is a growing interest in miniaturization of ...
    • Heart sound localization and reduction in tracheal sounds by gabor time-frequency masking 

      Saatçı, Esra; Akan, Aydın (Istanbul Unıv, Fac Engineering, Elektrik-Elektronik Mühendisliği Bölümü, Avcılar Kampüsü, İstanbul, 34320, Turkey, 2017)
      Respiratory sounds, i.e. tracheal and lung sounds, have been of great interest due to their diagnostic values as well as the potential of their use in the estimation of the respiratory dynamics (mainly airflow). Thus the ...
    • High-Performance Mimo Ofdm Wireless Systems With Generalized Prefix 

      Acar, Yusuf; Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2013)
      Consumers require increasing data rates and therefore it is important to develop techniques that increase the spectrum efficiency. MIMO OFDM is a fundamental technology for high data rate wireless systems. Correlation among ...
    • Improving performance of switched reluctance motor by fuzzy logic controller 

      Derdiyok, A.; Inanc, N.; Özbulur, Veysel; Bilgiç, Mehmet Oruç (1999-04)
      This paper presents torque ripple minimization of a switched reluctance motor (SRM) by using a fuzzy controller, The nonlinear model of the SRM and the mathematical model of the converter circuit are driven. The motor used ...
    • Internet Addiction Research in The School of Vocational Studies: Evidence from Turkey 

      Kurt, Doğuş; Tekin, Abdulkadir (Int Scientific Conference SGEM, 14, Kilment Ohridsky BLVD, Sofia, 1797, Bulgaria, 2008)
      As a growing trend in the world, internet-based remote education both in governmental and private education institutes is getting popular in Turkey as it is to be all over the world. Internet-based education models give ...
    • Interpolation based pilot-aided channel estimation for STBC spatial modulation and performance analysis under imperfect CSI 

      Acar, Yusuf; Doğan, Hakan; Başar, Ertuğrul; Panayırcı, Erdal (INST Engineering Technology-Iet, Michael Faraday House Six Hills Way Stevenage, Hertford Sg1 2Ay, England, 2016-09-20)
      A combination of space-time block coding and spatial modulation (STBC-SM) has been recently proposed for multiple input-multiple output systems to obtain both spatial diversity gain and more capacity simultaneously while ...
    • Inverse Dual Converter (IDC) for High Power DC-DC Applications 

      Ehsani, Mehrdad; Husain, Iqbal; Bilgiç, Mehmet Oruç (IEEE, 1990)
      The inverse dual converter (IDC), suitable for high-power DC-DC conversion applications, is presented. The IDC is a voltage source converter with an AC link and has been derived from an inductor converter bridge. This ...