Yazar "Bakir, H. Gokhan" seçeneğine göre listele

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  • Küçük Resim Yok
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    An attempt to understand the observed plateau of the magnetization in tetranuclear iron(II) complexes of thiacalixarene macrocycles
    (Indian Acad Sciences, 2010) Bayri, Ali; Bakir, H. Gokhan; Sulu, Mustafa; Karakaplan, Mustafa
    The next-nearest-neighbour (NNN) effect in tetranuclear iron(II) complexes of thiacalixarene macrocycles using the isotropic Heisenberg model has been investigated in order to understand its effects on the observed plateau of magnetization. Although NNN effect is generally very weak in these kinds of systems, it was calculated that its response is quite significant to the external perturbations in certain temperature regions. Using the isotropic Heisenberg exchange Hamiltonian, zero-field energy spectra have been calculated for this particular tetranuclear system. The average magnetic moments with and without next-nearest-neighbour interactions were also calculated. In order to verify the calculations, the results were compared with experimental data taken from the literature, whence, it is suggested that observed magnetic behaviour can be improved by taking into account the NNN effect.
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    Design and implementation of ultrasonic sonar system for autonomous vehicles
    (Ieee, 2018) Seven, Sibel; Dikmen, Ismail Can; Karadag, Teoman; Bakir, H. Gokhan; Abbasov, Teymuraz
    Autonomous vehicles are vehicles that contain a variety of sensors that sense the environment and that can be actuated without driver intervention thanks to these sensors. Researches on autonomous vehicle technology continues at full speed. In this study, data from ultrasonic sensor and the temperature sensor are processed in the micro controller and displayed on the computer screen. For this, the microcontroller controls both the servo motor, calculates the sound velocity in the environment, and encodes the signal to be transmitted from the ultrasonic sensor. In this case, more accurate results are obtained than using fixed sound speed. In addition, the encoding of the signal sent from the ultrasonic transmitter is also prevented from being affected by noise or other sensors in the environment. This study was designed and conducted for the model vehicle to be used for autonomous vehicle studies in the laboratories of our university.