Cemal Yilmaz

Universitiy of Gazi · Electrical and electronics

Melanoma is one of the most dangerous types of skin cancer. Detecting melanoma is complicated and takes too much time, which doctors and healthcare professionals accomplish with the help of dermoscopic images. In the last few years, artificial intelligence-based (AI) systems have emerged to detect melanoma and save healthcare workers' time. In addi...

Buried mines pose great dangers to humans and animals around the world, which means thousands of people die each year fromburied mines. Detecting and destroying these mines without harming people is an important issue. Today, these landmines aredetected using different methods such as Ground Effect Radar, Electromagnetic induction, Infrared and Nuc...

Gömülü mayınlar, dünyanın her yerindeki insanlar ve hayvanlar için büyük tehlikeler oluşturuyor, bu da her yıl binlerce insanın gömülü mayınlardan ölmesi anlamına geliyor. Bu mayınların insanlara zarar vermeden tespit edilip imha edilmesi önemli bir konudur. Günümüzde bu kara mayınları Yer Etkili Radar, Elektromanyetik indüksiyon, Kızılötesi ve Nük...

In this study, breast cancer classification as benign or malignant was made using images obtained by histopathological procedures, one of the medical imaging techniques. First of all, different noise types and several intensities were added to the images in the used data set. Then, the noise in images was removed by applying the Wavelet Transform (...

In this study, the performance of Slime-Mould-Algorithm (SMA), a current Meta-Heuristic Search algorithm, is improved. In order to model the search process lifecycle process more effectively in the SMA algorithm, the solution candidates guiding the search process were determined using the fitness-distance balance (FDB) method. Although the performa...

Runge Kutta (RUN) is an up-to-date and well-founded metaheuristic algorithm. The RUN algorithm aims to find the global best in solving problems by going beyond the traps of metaphors. For this purpose, enhanced solution quality mechanism is used to avoid local optimum solutions and increase the convergence speed. Although the RUN algorithm offers p...

Çalışmanın kapsamını, makine öğrenmesinde sık kullanılan algoritmalardan olan; tree, random forest, logistic regression ve linear regression teknikleri ile iki ayrı sınıftan oluşan öğrenci grubunun hangi lise türünden mezun olduklarına yönelik tahminde bulunma örneği oluşturmaktadır. Ön lisans elektronik ve otomasyon bölümünde okuyan bu öğrenci sın...

In this study, design optimization of a 1.5 kW Brushless Direct Current Motor (FDAM) has been carried out for fan and compressor applications. The initial motor design which is obtained by taking the IC 410 cooling method defined in the IEC 60034-6 standard into account, has been optimized in order to offer a high efficiency and compact structure b...

There has been a significant increase in the use of deep learning algorithms in recent years. Convolutional neural network (CNN), one of the deep learning models, is frequently used in applications to distinguish important objects such as humans and vehicles from other objects, especially in image processing. After the ImageNet Large Scale Visual R...

The manual reaction approach to faults is exhibited in conventional grid. Manual operations are slow in many cases and resulting in big fault and power cut. Turkey has experienced it by living on March 31, 2015. The switching to smart grids is inevitable in order to minimize human errors and avoid big failures. It is a solution to turn the appropri...

The design of PMSMs, which are frequently used in various areas of the industry and have strong features, is an important process because the design parameters significantly determine its performance and physical properties. The design of the-se motor contains complex equations and requires a lot of calculation load. The realization of the optimal...

Electricity is indispensable for everyone. Many technological tools developed are powered by electricity. It is important that electrical energy is delivered to customers in a continuous and high-quality manner. For uninterrupted energy, the right infrastructure and the right design for the installation are required. An incorrect design during the...

Endüstride ve otomasyonda doğrusal hareket vazgeçilemez bir ihtiyaçtır. Söz konusu hareket dairesel çıktı üreten makinalara kayış, kasnak ve dişliler eklenerek temin edilmektedir. Ancak bu tür çözümler verim düşmesine ve maliyetlerin artmasına neden olmaktadır. Diğer taraftan lineer motorlar elektrik enerjisini doğrusal harekete direkt çeviren elek...

In today's applications, a significant increase in the use of deep learning algorithms is noticeable. The convolution neural network (CNN) of deep learning has been used frequently recently, especially for the successful discrimination of people and vehicles from other objects. Especially with the ImageNet Large Scale Visual Recognition Challenge (...

At present, active detectors are commonly used for detection of land mines. Land mines can be detected with high precision through active detectors. However, the operating principle of active detectors can also lead to vital dangers. When detecting mines in the field, electrical signals sent to the environment from active detectors sometimes trigge...

An effective way to improve the efficiency and extend the life of the machines is to determine the failures of the bearings during operation. Early detection of bearing failures also has critical importance in terms of production costs. Various maintenance methods are used to prevent the failures. Despite all the precautions, unexpected failures ca...

In this study, a real time monitoring and control of the working parameters of distributed robotic systems used in manufacturing processes is presented. Additionally, a fault diagnosis and protection system is developed in the control and monitoring system to prevent possible errors during the working process. Unlike the conventional monitoring and...

Bu çalışmada asenkron motorlarda optimal rotor oluk ölçülerinin, Sequential Nonlineer Programming (SNP), Genetik Algoritma (GA) ve Sequential Mixed Integer NonLinear Programming (SMINP) yöntemleri ile bulunması gerçekleştirilmiş ve karşılaştırmalı olarak motor performansına olan etkisi incelenmiştir. Gerçekleştirilen optimizasyon çalışmasındaki ama...

In this study, an fault detection and protection system is developed for the driver parameters of three phase asynchronous motors by using SCADA and PLC. As the fundamental units in the developed system, as asynchronous motor, frequency converter, PLC (Programmable Logic Controller) and SCADA is used. The basis of the fault detection and protection...

In this study, at the Çorum /center a project that provides control and monitoring on mobile devices to drip irrigation system has been applied successfully. An essential element of modern technology to replace conventional control system, which has established a structure that works through smartphones. There are apple trees on agricultural land....

One of the most important factors for successful agricultural production is the irrigation system in place. In this study, a precision irrigation system, which takes advantage of the various phases of plant growth, was developed and implemented using the sensor network technology integrated with IOS/Android. The amount of water in the soil was meas...

SCADA (supervisory control and data acquisition) systems have been used widely in the manufacturing process in parallel to the rapid advancement of technology in recent years. The quality of products in these systems depends on direct process monitoring and control. Therefore, in this study, a SCADA‐based scale model is developed for real‐time moni...

This paper proposes the application of Symbiotic Organisms Search (SOS) Algorithm to solve the various Economic Load Dispatch (ELD) problems. Both classical ELD problem which has smooth fuel cost function and nonconvex ELD problem which has nonconvex and discontinuous fuel cost function due to considering of some practical constraints like valve po...

In this study, a decision support system has been developed for land mine detection and classification. Data obtained from detector based magnetic anomaly have been used to classify the land mines. With this classification, it is decided that whether obtained data belongs to a land mine or not, and the type of mine. The meta-heuristic k-NN classifi...

Abstract—In this study, Profibus is used in remotecontrolling of an Asynchronous Motor (AM) which is an industrial automation network. Therefore, the asynchronous motor torque and speed control are examined. In controlling the AM, the feedback data and control signals are conducted through a network. In this design, a real time control system has b...

This study aims to improve the energy performance of residential buildings. heating load (HL) and cooling load (CL) are considered as a measure of heating ventilation and air conditioning (HVAC) system in this process. In order to achive an effective estimation, hybrid machine learning algorithms including, artificial bee colony-based k-nearest nei...

In this study, a home automation system controlled by a Programmable Logic Controller (PLC) was designed. The designed control module comprised of software and hardware. The control module provides multilevel component fault detection, tolerance, switch on or switch off in critical-areas such as gas sensing, voltage control of power socket and valv...

In this study the remote control of an asynchronous motor (ASM) was performed by fuzzy logic. The study is substantially in the form of Profibus-DP network structure, ASM and fuzzy logic control (FLC). The aim of the study is to reduce the network-induced delay by the help of fuzzy logic algorithm and high speed data transfer feature of the Profibu...

A training module, which is intended for object lessons of especially technical students has been developed through this work. The training module runs in the physical LAN environment that consists of a server and workstations that are connected to it. That module has been designed to be used for various different courses. Infrastructure of the dev...

In this study, data fusion military applications and network centred war application were examined with data fusion. Although data fusion is not a new idea, real time data fusion has taken places for application possibilities with the emergence of new sensors from the developing technology. The evaluation of obtained data coming from the several se...

The mathematical model of the network-induced delay control systems (NDCS) is given. Also the role of the NDCS's components such as controller, sensor and network environment on the network-induced delay are included in the mathematical model of the system. The network delay is investigated on Profibus-DP based network application and experimental...

Bu çalışmada, Avrupa Birliği (AB)’nin desteklediği Mesleki Eğitim ve Öğretim Sistemini Güçlendirme Projesi (MEGEP) kapsamında konunun alan uzmanları ile gerçekleştirilen yeterliliğe dayalı Elektrik Pano Montörü Meslek Standardı geliştirme aşamaları analiz edilmektedir. Ayrıca, işgücü piyasasının ihtiyaçları doğrultusunda hazırlanan meslek standart...

Bu çalışmada, Avrupa Birliği (AB)’nin desteklediği Mesleki Eğitim ve Öğretim Sistemini Güçlendirme Projesi (MEGEP) kapsamında konunun alan uzmanları ile gerçekleştirilen yeterliliğe dayalı Bobinajcı Meslek Standardı geliştirme aşamaları analiz edilmektedir. Ayrıca, işgücü piyasasının ihtiyaçları doğrultusunda hazırlanan meslek standartlarına uygun...

In this study, remote control of a induction machine has been realized by designing a network based industrial automation system. Delay has been revealed by experimental analysis by examining the effects of network-induced delay on machine control. Continual changes of the network-induced delay and the effects on the systems performance depending o...

ZET Bu çalışmada, bir güvenlik sistemi tasarımının Profibus-DP ağ omurgası üzerinden denetimi incelenmiştir. Saha ile denetim merkezi arasındaki veri iletiminde meydana gelen ağ gecikmesi analizi yapılmıştır. Güvenlik sistemlerinde ağ tabanlı denetimin sistem performansını artırdığı ve ağ gecikmesinin durum algılamadaki kritik zaman üzerindeki olum...

ZET Bu çalismada apartmanlardaki merdiven a ydinlatmasinda geleneksel zamanlayici ile aydinlatma ve PIR (Pasif Kizilötesi yaklasim sensörü) ile kontrol edilen aydinlatma yöntemleri karsilastirilmistir. Binalardaki merdiven aydinlatmasinda enerji tasarrufu saglamak amaciyla klasik aydinlatma yerine PIR kontrolu aydinlatma metodu tasarlanmistir. Klas...