Güncel Gönderiler

  • Texture Analysis Based Iris Recognition 

    Gürkan, Güray; Akan, Aydın (2006-01)
    In this paper, we present a new method for personal identification, based on iris patterns. The method composed of iris image acquisition, image preprocessing, feature extraction and finally decision stages. Normalized ...
  • A novel EOG-based wireless rapid communication device for people with motor neuron diseases 

    Uşaklı, Ali Bülent; Gürkan, Serkan; Gürkan, Güray (Taylor and Francis Online, 2018-11-22)
    In this study, a new electrooculography (EOG) based system that provides efficient communication for people suffered from motor neuron diseases is presented. The system consists of two distinct devices. The first device ...
  • Adaptive dual-mode OFDM with index modulation 

    Aldırmaz Çolak, Sultan; Acar, Yusuf; Başar, Ertuğrul (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2018-10)
    With the integration of the index modulation concept, the popular OFDM has gained an appealing new dimension. However, OFDM with index modulation (OFDM-IM) causes a decrease in data rate for higher order modulations due ...
  • 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 ...
  • 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 ...
  • Power converters as natural gyrators 

    Ehsani, Mehrdad; Husain, Iqbal; Bilgiç, Mehmet Oruç (IEEE, 1993-12)
    The authors investigate the open-loop gyrator behavior of a class of DC-DC converters that are characterized by double bridges. If the switching frequency of the double bridge converter is high enough with respect to its ...
  • Inverse dual converter (IDC) for high power DC-DC applications 

    Ehsani, M.; Husain, I.; Bilgiç, Mehmet Oruç (IEEE, April 1993)
    A family of DC-DC converters suitable for high-power applications is introduced. The inverse dual converter (IDC) is capable of continuous voltage step-up or step-down control over a wide range of and without the need of ...
  • Magnetically inflatable SPS with energy storage capability 

    Ehsani, M.; Bilgiç, Mehmet Oruç; Patton, A. D.; Mitra, J. (IEEE, 1995)
    A new approach to superconductive magnetic energy storage (SMES) for solar power satellite (SPS) with inherent rigidity is introduced in this paper. The rigidity of this SMES originating from the electromagnetic forces ...
  • Capacitor coupled converter (C3) for high power DC conversion 

    Ehsani, Morteza; Bilgiç, Mehmet Oruç; Khan, S.; Laskai, L.; Jeong, Seung-Gi (IEEE, 1995)
    The bang-bang controlled capacitor coupled converter (C<sup>3</sup>) is described in this paper. Due to the converter's inherent commutating property, the C<sup>3</sup> can accommodate thyristors as well as high-power gate ...
  • New architectures for space power systems 

    Ehsani, M.; Bilgiç, Mehmet Oruç; Patton, Alton D.; Mitra, J. (IEEE, 1995-08)
    Electric power generation and conditioning have experienced revolutionary development over the past two decades. Furthermore, new materials such as high energy magnets and high temperature superconductors are either available ...
  • Time-Averaged Behaviors of Single and Dual Flying Capacitor Converters 

    Bilgiç, Mehmet Oruç; Ehsani, M. (Taylor and Francis Online, 1989)
    The Single Flying Capacitor Converter (SFCC) and Dual Flying Capacitor Converter (DFCC) are two-quadrant power supplies for energy storage and transfer systems. They have applications in nuclear research and pulsed power ...
  • A synchronous frequency multiplier using phase-locked loop 

    Bilgiç, Mehmet Oruç (Taylor and Francis Online, 1982)
    A useful technique to multiply the frequency of an input square wave by n times without losing synchronization with an original waveform is proposed. A circuit which implements this technique for f = 50 Hz and n = 12 is ...
  • TEM Wave Scattering by a Step Discontinuity on the Outer Wall of a Coaxial Waveguide 

    Akşimşek, Sinan; Çınar, Gökhan; Nilsson, Börje; Nordebo, Sven (2013-08)
    In this paper, the propagation of TEM waves along a coaxial waveguide with a step discontinuity on its outer wall is investigated rigorously by applying the direct Fourier transform and reducing the problem into the solution ...
  • 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 ...
  • Determination of theminimum sampling frequency in bandpass sampling by geometric approach and geometric programming 

    Saatçı, Esra; Saatçı, Ertuğrul (Springer, 2018-10)
    This paper presents a simple and fast approach to find a minimum sampling frequency for multi-band signals. Instead of neighbor and boundary conditions, constraints on the sampling frequency were derived by using the ...
  • Real-time Frame Buffer Implementation based on External Memory using FPGA 

    Davutoğlu, Doğancan (Elsevier, 2018-05)
    In this paper, design of a real-time video frame buffer with an external memory interface is proposed. In addition, simulation and implementation processes of the design is described. The mentioned system is able to buffer ...
  • The impact of social intelligence on academic achievement 

    Bal, Pervin; Yıldırım, Osman; Yıldırım, Halil (Int Scientific Conference SGEM, 14, Kilment Ohridsky Blvd, Sofia, 1797, Bulgaria, 2008)
    In the research, The Resilience Scale for Adults (RSA-scale) proposed by Hjemdal, Friborg, Martinussen, and Rosenvinge was used to assess students' social intelligence. RSA-scale is consisted of 45 items including live ...
  • The effect of emotional intelligence on job satisfaction: a case study in education 

    Özer, Aslıhan; Dede, Nazan; Yıldırım, Osman (Int Scientific Conference SGEM, 14, Kilment Ohridsky Blvd, Sofia, 1797, Bulgaria, 2008)
    The importance of understanding Emotional intelligence (EI) skills has gravitated form the business management to training activities. The increasing number of recent researches oil this relatively new subject have been ...
  • Relationship Between Emotional Intelligence and Foreign Language Learning 

    Tekin, Abdulkadir; Yıldırım, Halil; Yıldırım, Osman (Int Scientific Conference SGEM, 14, Kilment Ohridsky BLVD, Sofia, 1797, Bulgaria, 2008)
    The increasing number of recent researches indicates that emotional intelligence is more important than IQ in many fields. In literature, many quantitative findings indicate that there is a significant relationship between ...

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