Mühendislik Fakültesi: Recent submissions

Now showing items 1321-1340 of 2863

Passivity-based chaos control and synchronization of the four dimensional Lorenz-Stenflo system via one input

Uyaroğlu, Yılmaz; Emiroğlu, Selçuk (SAGE PUBLICATIONS LTD, 2015)

This paper discusses chaos control and synchronization of the four dimensional Lorenz-Stenflo system based on passive control technique. Using passive theory, chaos control and synchronization of a four dimensional ...
A system theoretic approach to array processing

Demirkol, Aşkın; Demir, Zafer; Erol, Emre (NATL INST OPTOELECTRONICS, 2015)

In this paper, utilizing system theoretic concepts a sound, rigorous theory of array processing is established which leads to several new results. MUSIC, MIN-NORM, ESPRIT, and PISARENKO used for both spatial and temporal ...
Analysis on trending electromagnetic exposure levels at homes and proximity next to base stations along three years in a city

Çerezci, Osman; Kanberoğlu, Baha; Yener, Şuayb Çağrı; Yener, Şuayb Çağrı (VILNIUS GEDIMINAS TECH UNIV, 2015)

Electromagnetic field exposure levels of people living in the closest houses to the GSM transmitting antennas were investigated in a city between 2010 and 2012. At the end of 3-year period, trend of the electromagnetic ...
Electromagnetic characterization of ceramic material produced with natural zeolite

Kanberoğlu, Baha; Nişancı, Muhammet Hilmi; Demirkıran, Ayşe Şükran (ELSEVIER SCI LTD, 2015)

The aim of this study is to investigate the electromagnetic characterization of ceramic panel produced with natural zeolite via considering the frequency-dependent transmission (T), reflection (R) and absorption (A) ...
Real Time Tracking of TV Satellites on Moving Vehicles Using Kalman Filter

Fatih Kocadag; Demirkol, Aşkın (IEEE, 2015)

This paper presents a real time tracking of TV satellites on mobile vehicles using Kalman filter. Kalman filter is adapted to tracking the satellite for uninterrupted broadcasting on moving vehicles. Information about the ...
Retinal Nerve Fiber Layer Detection at Optical Coherence Tomography Image for the Diagnosis of Glaucoma

Mehmet Erhan Sahin; Bozkurt, Mehmet Recep (IEEE, 2015)

Glaucoma is characterized by increased intraocular pressure, retinal ganglion cell degeneration, optic disc cupping and visual field loss forming is a chronic optic neuropathy. Glaucoma is an irreversible worldwide and the ...
Signal Processing and Communications Applications Conference

Baris Doruk Gungor; Uçar, Muhammed Kürşad; Bozkurt, Ferda (IEEE, 2015)

In order to assess the health status of newborn babies, a practical method called Apgar score is used. By looking at Apgar score, medics decide whether the newborn need any attention such as resuscitation or intubation. ...
Recursive blind image deconvolution via dispersion minimization

Vural, Cabir (JOHN WILEY & SONS LTD, 2005)

This paper presents an adaptive autoregressive (AR) approach to the blind image deconvolution problem which has several advantages over standard adaptive FIR filters. There is no need to figure out the optimum filter support ...
Model-reference sliding mode control of a three-phase four-leg voltage source inverter for stand-alone distributed generation systems

Özdemir, Ayhan (2015)
An ambiguity function aided target density function for radar imaging

R. F. Cinar; Demirkol, Aşkın; Demir, Zafer (NATL INST OPTOELECTRONICS, 2015)

This paper investigates a new approach to target density functions for active sensor imaging. The data obtained from a phased array radar system is processed by the newly developed technique. In order to reconstruct the ...
Chaotic artificial bee colony algorithm based solution of security and transient stability constrained optimal power flow

Ayan, Kürşat; Kilic, Ulas; Baraklı, Burhan (ELSEVIER SCI LTD, 2015)

Due to the increase rapidly of electricity demand and the deregulation of electricity markets, the energy networks are usually run close to their maximum capacity to transmit the needed power. Furthermore, the operators ...
A new seven-term chaotic attractor and its hyperchaos

Can, Engin; Uyaroğlu, Yılmaz (NATL INST OPTOELECTRONICS, 2015)

In this paper a new chaotic system reported. Some basic dynamical properties of the new attractor are demonstrated in terms of equilibria, Jacobian matrices, Lyapunov exponents, chaotic waveform in time domain, continuous ...
An Ultra Low-Voltage Ultra Low-Power Memristor

Yener, Şuayb Çağrı; Atilla Uygur; H. Hakan Kuntman (IEEE, 2015)

Memristor can provide new approaches especially in nonlinear & chaotic circuit design. Since no commercially available memristor exist until yet, obtaining of a practical implementation which behaves as a memristor, is ...
International Conference on Electric Power and Energy Conversion Systems

V. A. Kayhan; Ülker, Fevzeddin; O. Elma (IEEE, 2015)

Energy is very important for countries which are developing rapidly, such as Turkey, during the fossil fuel prices are increasing. In this respect, renewable technologies such as PV systems are gaining importance in the ...
Signal Processing and Communications Applications Conference

Uçar, Muhammed Kürşad; Bozkurt, Mehmet Recep; Kemal Polat; Bilgin, Cahit (IEEE, 2015)

Obstructive Sleep Apnea Syndrome is one of the major diseases of our century. Diagnosis of this disease is very difficult. The reason of the difficulty is the complexity of the system. AHI index is calculated for the ...
Chaotic Digital Image Watermarking Scheme Based on DWT and SVD

Çetinel, Gökçen; Llukman Cerkezi (IEEE, 2015)

In this study chaos based digital watermarking scheme together with Discrete Wavelet Transform (DWT) and Singular Value Decomposition (SVD) is proposed. In the proposed watermarking scheme, the cover image is decomposed ...
Economic Anechoic Chamber Materials with Polyester Acoustic Sponge Matrix

N. K. Uluaydin; S. S. Seker; Çerezci, Osman; A. Y. Citkaya (IEEE, 2015)

The anechoic chamber materials are based on specially shaped polyurethane materials doped with carbon materials such as carbon black and graphite and sometimes further supported with metal oxides and sintered metal oxide ...
Restarting Scheme of Electrical Motors After Supply Voltage Outages in Heavily Loaded Industrial Facilities

Selahattin Kucuk; Luis Fernandez Fernandez; Bayrak, Mehmet; Ahmet Serdar Yilmaz (IEEE, 2015)

This paper presents the automatic motor restarting scheme applied at a large oil refinery where more than 600 motors are assigned to automatic restarting. Application criteria for motor restarting, power system simulations ...
Attenuation of Vegetation and Snow on RF Wireless Communication

S. Selim Seker; S. Gokce Ceran; Çerezci, Osman; A. Yasin Citkaya (IEEE, 2015)

In this study, the attenuation in mobile communication due to snow and vegetation is simulated by using Discrete Propagation Model. The study includes simulation results according to different frequencies of propagating ...
Induction motor parameter estimation using metaheuristic methods

Turan, Mustafa (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2014)

The steady-state equivalent circuit parameters of an induction motor can be estimated using the operation characteristics that are provided by manufacturers. The characteristics of the motor used in estimation methods are ...