Person: KORKMAZ, HAYRİYE
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KORKMAZ
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HAYRİYE
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Publication Metadata only Poster: A Mobile Application for Voice and Remote Control of Programmable Instruments(SPRINGER INTERNATIONAL PUBLISHING AG, 2019) YAYLA, AYŞE; Ece, Burak; Yayla, Ayse; Korkmaz, Hayriye; Auer, ME; Langmann, RThe purpose of this work is to add a new feature to bench-type conventional instruments used in Electrical and Electronics Engineering Laboratory which do not have any voice recognition and wireless communication technology. By this way, the user can control these instruments/devices remotely with voice commands and also monitor the results/values in graphical or numerical/text format as well over a mobile device screen. The only limitation is that such instruments should have a driver supported by any software such as NI LabVIEW and a PC connectivity interface such as USB, GPIB or LXI (LAN extensions for Instrumentation). Controlling the instruments (such as oscilloscope or signal generators which are frequently used for training purposes and whose functions are manually set) over a mobile device with voice commands will make life easier for disabled students who especially have difficulties in using their hands.Publication Metadata only A Remotely Accessible and Configurable Electronics Laboratory Implementation by Using LabVIEW(WILEY, 2010) KORKMAZ, HAYRİYE; Azaklar, Sezen; Korkmaz, HayriyeIn this article, selected applications from the experiments included in undergraduate Electronics and Computer Education curriculum are transformed into remotely accessible and configurable manner. The experiment user interfaces and publishing over the internet is developed in LabVIEW. These experiments are suitable for online conduction where students are either in-class or laboratory on-campus and/or at home. In this work, four different remotely configurable experiment modules are designed and implemented. Remotely configurable facility in a predefined range is performed by using switches activated by DO terminals of a data acquisition card through a web-based application. In this way, students can select the desired experiment from the ones stored on the PCB, adjust the voltage applied to the input terminal of the circuit and change the circuit elements values by using telepresence methodology. (C) 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 18: 709-720, 2010; View this article online at wileyonlinelibrary.com; DOI 10.1002/cae.20276Publication 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.Publication Metadata only Development of a driving cycle for Istanbul bus rapid transit based on real-world data using stratified sampling method(PERGAMON-ELSEVIER SCIENCE LTD, 2019) ERDAL, HASAN; Kaymaz, Habib; Korkmaz, Hayriye; Erdal, HasanEnvironmental as well as financial issues forces to develop clean, efficient, and sustainable vehicles which constitutes an integral part of our daily life for urban transportation. Nevertheless, exhaust emissions of conventional internal combustion engine vehicles are the major source of global warming lead greenhouse effect. One solution for this issue is hybridization/electrification of the vehicles. One of the most important tools which can help to test performances of technical solutions systematically is driving cycles representing real driving conditions for vehicle emissions testing and estimation. When the history of the driving cycles was reviewed, it can be seen that there were big changes from constructing synthetically to real world cycles and from emission-focused cycles to emission, pollution and fuel consumption focused cycles. And now, a new application such as hybridization and/or electrification has been added to driving cycles. Main aim of this study is to create a practical driving cycle for Bus Rapid Transit (BRT) vehicles. To do this, characteristic driving parameters such as speed, distance, time, acceleration have been determined first. Data acquisition from conventional vehicles running on Istanbul route was performed and then data were analysed. A driving cycle was developed by using Proportional Stratified Sampling (PSS) technique. Comparison between constructed driving cycle and the real-world data show that difference is less than 10%. And so, it can be concluded that proposed driving cycle was acceptable.Publication Metadata only Production of the go-doped pla-based nanofibers and investigation of their electrical properties(2018-07-18) TERZİ, ÜMİT KEMALETTİN; KORKMAZ, HAYRİYE; EKREN, NAZMİ; GÜNDÜZ, OĞUZHAN; CESUR, SÜMEYYE; Özen S., Aydoğdu M. O., Ege Z. R., Cesur S., Terzi Ü. K., Korkmaz H., Ekren N., Gündüz O.