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 Metadata only Development of a remote laboratory for an electronic circuit design and analysis course with increased accessibility by using speech recognition technology(WILEY, 2021) SARIKAŞ, ALİ; Yayla, Ayse; Korkmaz, Hayriye; Buldu, Ali; Sarikas, AliWhen the curricula of engineering undergraduate programs are examined, it can be seen that experimentation plays a very important role and the learning outcomes of the courses are mostly dependent on practical abilities. However, there may be a few who cannot use their hands permanently or temporarily among the students who are attending these courses. Therefore, the participation of disabled students in this part of the course has always been a problem. In this paper, a remote laboratory application that aims to increase the accessibility of electronic circuit design and analysis courses by using speech recognition technology is introduced. This laboratory is designed for hands-free operation and enables students to analyze the electronic circuits by speaking. Google Web Speech API was used for speech recognition and the user interface was designed using Adobe Flash Professional. The parameters are sent to the ASP.NET page by using ActionScript 2.0 programming language. The application developed by using C# programming language enables programming the experimental hardware that includes a signal generator, a Raspberry Pi 2 with a camera, an oscilloscope, and a new test card. In the Raspberry Pi 2, Python programming language was used to select the desired experiment from those present on the board and to control digitally programmable circuit components such as digital potentiometers or parameters such as the DC reference voltage level. When the student successfully completes the predefined experimental procedures, an automatically generated e-mail is sent to the instructor including the student's username, log-in time, the oscilloscope screenshots, and ideal experimental results.Publication Metadata only Efficient Deployment of Wireless Sensor Nodes with Evolutionary Approaches(2022-01-01) KORKMAZ, HAYRİYE; Birtane Akar S., KORKMAZ H., Sahingoz O. K.© 2022 IEEE.In previous WSN studies, it was observed that there are two common methods used in coverage area calculation: 1) image processing technique or 2) mathematical formulas. calculation of the coverage area, if the sensing ranges of the mobile nodes intersect (overlap) each other, the processing time increases while the calculation result is wrong. In this study, a new method is proposed to calculate the coverage area with relatively high accuracy, including the overlap conditions, but in a shorter time. In this method, the points that were placed as targets to be tracked in the Region of Interest (ROI) in the previous studies are now used in a different way. All covered points by any node are counted to calculate the area. However, in this case, the number of points placed in the area should be much higher than in the previous cases. Coverage performance is calculated by counting the points covered by the WSN nodes and dividing them by the total number of points defined initially. (Coverage rate) First of all, to decide the experiment\"s initial conditions, 57 different cases were simulated. Different number of sensor nodes with different radii (25, 50, 100, 200) was considered and then the average of the error rate of all cases was calculated. The lowest error value was obtained in the case of the 2000×2000 area. Therefore, an area of 2000×2000 was preferred in the next steps. It can be concluded that, this method is a promising method to calculate the coverage rate in WSNs.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.