Person: KORKMAZ, HAYRİYE
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KORKMAZ
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HAYRİYE
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Publication Open Access Performance of Hyperparameters in Prediction with Deep Neural Networks of Electrical Properties of Nano-Coated Glasses Nano-Kaplamali Camlarin Elektriksel zelliklerinin Derin Sinir Aglari Ile Tahmininde Hiper Parametrelerin Performansi(2023-01-01) KORKMAZ, HAYRİYE; Yenginer H., Eraslan S., Gundogdu B., KORKMAZ H.Nano-coated glasses are widely used in different fields such as industry, transportation and architectural structures. After these glasses are obtained by various thin film coating applications, they are subjected to the heat treatment process (tempering, bending, etc.), which is considered as a secondary process. Both of these two-stage processes lead to changes in the electrical and mechanical properties of the final product. While electrical properties such as transmittance, coated surface reflection and uncoated surface reflection values obtained as a result of the first stage can be calculated by analytical methods; the chaotic nature of the second stage does not allow these parameters to be calculated with similar methods. Therefore, in this study, a multi-input-multi-output deep neural network structure was designed for the estimation of the electrical properties of the nano-coated glass type produced for commercial use in architectural fields. Moreover, The dataset with 64 different coating types was augmented by adding noise technique and the performances of the hyperparameters in prediction success were compared. The performance of the network structure was measured by the mean absolute error, mean squared error, and coefficient of determination metrics. The designed network structure was tested on 16 samples and according to the results obtained, it was observed that the best performance was achieved with the Adadelta learning algorithm and ReLU activation function on the augmented data set.Publication Open Access A novel monitoring dashboard and hardware implementation simplifying the remote access in industry(2023-07-18) KORKMAZ, HAYRİYE; Korkmaz H., Demir E.In today’s world where technology is developing with a great speed, it is getting harder day by day to adapt or include changes on new technology to the processes in facilities. Insisting on using conventional solutions adopted so far in industrial facilities cause problems to compensate the changing fast consumption needs of today. Adopting recent technologies improves the maintenance and troubleshooting processes of the facilities, accelerates the production and increases the quality of production. In this way, technology based smart systems can provide the devices or machines with the skills required for problem solving and system development in the industry. In this study, a remote monitoring and control application is proposed for a frequency inverter which is widely used and critical device for motor driving in industrial facilities is discussed and a novel internet of things (IoT) based communication gateway is developed. In this way, it is intended to improve the problem solving skills of field personnel by contributing with remote support.Publication Open Access A Novel Monitoring Dashboard And Hardware Implementation Simplifying The Remote Access In Industry(2023-01-01) KORKMAZ, HAYRİYE; Demir E., KORKMAZ H.In today\"s world where technology is developing with a great speed, it is getting harder day by day to adapt or include changes on new technology to the processes in facilities. Insisting on using conventional solutions adopted so far in industrial facilities cause problems to compensate the changing fast consumption needs of today. Adopting recent technologies improves the maintenance and troubleshooting processes of the facilities, accelerates the production and increases the quality of production. In this way, technology based smart systems can provide the devices or machines with the skills required for problem solving and system development in the industry. In this study, a remote monitoring and control application is proposed for a frequency inverter which is widely used and critical device for motor driving in industrial facilities is discussed and a novel internet of things (IoT) based communication gateway is developed. In this way, it is intended to improve the problem solving skills of field personnel by contributing with remote support.Publication Open Access Hareketli hedef takip sisteminde genelleştirilmiş Hough dönüşümü (GHT) ve normalleştirilmiş çapraz ilinti (NCC) yöntemlerini ardışıl kullanarak eşleşme doğruluğunun arttırılması(2018-02-01) KORKMAZ, HAYRİYE; MUSTAFA YAĞIMLI;HAYRİYE KORKMAZ;M Oğuzhan ÜNBu çalışmada; hedefin daha iyi tahmin edilmesinde, hedefin ve şablon piksellerinin yoğunlukları arasında ilinti puanı hesaplanmıştır. Görünüm değişikliklerini ele almak için yapılan işlemde, hedefin şablonları 12 değişik görünüşten alınmıştır. Resmin merkez noktası ile sınırlayıcı kutunun merkez noktası arasındaki mesafe hesaplanmış ve bir hata sinyali olarak dönüştürülmüştür. Hata sinyalini kullanarak servo motorlar hedefin merkezileştirilmesi için kameranın görüş açısını değiştirmeye yönlendirilmiştir. Böylece hedef, değişen bir geçmişe sahip gerçek zamanlı olarak tanınmış ve izlenmiştir.Publication Open Access Personal computer-based visible spectrophotometer design(SAGE PUBLICATIONS LTD, 2018-09) KORKMAZ, HAYRİYE; Boecekci, Veysel Goekhan; Ozyetgin, Osman; Toker, Kenan; Korkmaz, HayriyeBackground It is possible to see a number of spectrophotometers produced by commercial purposes developed in line with the technical advices identified by the International Commission on Illumination (CIE) in universities' chemistry labs. These devices are employed in measuring and testing materials with unidentified characteristics as well as reporting the results. However, these systems are not modular in design and do not allow updates or modifications. Moreover, when the literature is reviewed, it can be seen that the researches on computer-controlled devices is limited. It is also reported that the devices with user interfaces bring advantages to researchers in terms of time efficiency and safety. Methods In this study, a computer-controlled, modular and low-cost spectrophotometer is designed to measure material densities contained within liquid samples. The proposed system is composed of a main unit, a data acquisition unit and a user interface. All tasks and relevant arrangements involved in a spectrophotometer application are controlled through an interface developed on LabVIEW graphical development platform; the results of the measurements can be monitored in real time, and it is also possible to store data. Thanks to the modular design, it became possible to change and update the relevant stage as needed. The waveform filter can be selected specifically as visible range, ultraviolet range or both depending on the application. Results The experiment was conducted in the visible range and a waveform filter between 400 and 700 nm was used. In the experiments, an easily accessible materials-methylene blue and copper sulfate solutions-were preferred as samples. For these solutions, the waveforms that give the best absorption values were identified and the density was measured at those values. Furthermore, the nonlinearity and repeatability characteristics of the proposed spectrophotometer were analyzed. For this purpose, measured values were compared with the acquired values from another commercial instrument that is already used in medical field. Measurements were repeated 50 times for copper sulfate and 43 times for methylene blue solutions. Conclusions After statistical analysis, it was observed that the reliability of the proposed system is high.