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  • Küçük Resim
    Öğe
    Çok Ölçütlü Karar Verme Yöntemleri ile Ekokardiyografi Cihazı Seçiminin Yapılması
    (2017) Cihan, Şeyma; Ayan, Enes; Eren, Tamer; Topal, Taner; Yıldırım, Erdem Kamil
    Amaç: Medikal cihazlar hastanelerde en çok bütçe ayrılan kalemlerdendir. Bu nedenle medikal cihaz alım kararı kritik kararlardan biridir. Bu çalışmada, bir devlet hastanesinde Kardiyoloji Servisine alınması planlanan ekokardiyografi cihazı seçim problemi ele alınmıştır. Gereç ve Yöntem: Ekokardiyografi cihazı seçimini etkileyen kriterler ve mevcut alternatif cihazlar konuyla ilgili literatür taranarak ve kardiyoloji alanında uzman üç hekimin görüşleri alınarak belirlenmiştir. Seçim kriterleri belirlendikten sonraAnalitik Hiyerarşi Süreci (AHP) yöntemi ile kriterler ağırlıklandırılmış ve İdeal Çözüme Dayalı Sıralama Tekniği (TOPSIS) yöntemi ile alternatifler sıralanarak en iyi alternatif belirlenmiştir. Bulgular: Ekokardiyografi cihazının seçim problemi için belirlenen alternatiflerin öncelikleri AHP yöntemine göre, B cihazı için %48, ikinci sırada yer alan A cihazı için %29, C cihazı için ise %23 olarak bulunmuştur. TOPSIS yöntemi ile İdeal Uzaklık (Si* ), Negatif İdeal Uzaklık (Si-) ve her bir karar noktasının ideal çözüme göreli yakınlık (Ci*) değerleri B cihazı için sırasıyla 0, 0.124287 ve 1 olarak bulunmuştur. Sonuç: AHP ve TOPSIS yöntemine göre B cihazı birinci alternatif olarak öne çıkmıştır
  • Küçük Resim
    Öğe
    Design and Implementation of a Basic Microcomputer for Educational Purpose
    (Ieee, 2016) Bakacak, Mehmet; Topal, Taner
    Today, most of electronic equipments includes at least one microcomputer. Microcomputers control the operation of electronic devices and to provide the required operations. The microcomputer has a constantly developing and changing structure according to the needs. To gain necessary information and skill on the structure and operation of the microcomputer is theoretically difficult. In the educational environment, the microcomputer need to embody to give a better understanding. The purpose of this study is design and implement a basic microcomputer by simplifying. Thus, facilitate understanding in education. The microcomputer which was the subject of this study is defined in the fifth section of Morris Mano's computer system architecture book [1] (third edition). Is a Single cycle and has 16 bit data bus, a 12 bit address bus and a memory size of 8 kilobytes. This microcomputer is designed on VHDL and reviewed the implementation on FPGA.
  • Küçük Resim
    Öğe
    A Modelling Study of Renewable and Stored Energy Sharing and Pricing Management System Developed for Multi-Apartment Complexes
    (Ieee, 2014) Kıray, Vedat; Topal, Taner; Sağbansua, Lütfü; Atacak, İsmail
    A unique system that will enable the efficient and shared usage of PV panels in multi-apartment complexes and sharing of energy is developed in this study along with a modeling scheme. Efficient and shared usage of the panels which is suggested as the solution requires sharing and pricing the energy in the apartment complex. In this modeling study which is conducted in Matlab and Simulink environment, the available energy is initially allocated for all the apartments and has them use it for free. The modeled system is applied to a three-apartment complex and the simulation results are obtained based on the electricity pricing tariff in Turkey. The amounts reflected in the electricity bill in the cases where the solar energy used and not used are calculated separately and compared later in the experimental results. It is demonstrated that the shared energy of the apartment complex can be allocated in an efficient and fair way. Moreover, it is proved that the budget generated by using the cheap energy can pay off the fix costs such as battery charge and renewal costs.
  • Küçük Resim
    Öğe
    Prediction of coronary angiography requirement of patients with Fuzzy Logic and Learning Vector Quantization
    (Ieee, 2013) Akbulut, Harun; Barisci, Necaattin; Arinc, Huseyin; Topal, Taner; Luy, Murat
    In this study, prediction of coronary angiography (CA) requirement of patients is presented using Fuzzy Logic (FL) and Learning Vector Quantization (LVQ). Data sets of patients are received from 200 patients, half of whom undergo CA, the other half doesn't undergo CA, the numbers of both men and women patients are selected equal. Input data sets and output data sets are determined and tested for FL. The correct classification rate of FL is measured 86% for prediction of CA requirement of patients. Training data sets and testing data sets are determined and tested for LVQ. The correct classification rate of LVQ is measured 88% for prediction of CA requirement of patients. These results show that LVQ is more effective than FL at prediction of CA requirement of patients.