Browsing Mühendislik Fakültesi by Author "Çerezci, Osman"

Now showing items 1-12 of 35

A simulation study of the cloud propagation model

Çerezci, Osman (IOP PUBLISHING LTD, 1999)

Propagation through a sparse distribution of lossy particles in a cloud is investigated. Using a discrete modelling technique, a mathematical model to aid in the interpretation of the interaction data obtained by electromagnetic ...
Achieving Frequency Synchronization by GPS Disciplined Reference Signal

Cagri Bicici; Çerezci, Osman (IEEE, 2016)

A method for achieving frequency synchronization between two distantly positioned high frequency oscillators is presented. The method is based on using GPS disciplined 10 MHz reference sine waves and phase locked dielectric ...
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 ...
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 ...
DETECTION OF P- AND S-WAVE ARRIVAL TIMES USING THE DISCRETE WAVELET TRANSFORM IN REAL SEISMOGRAMS

Arman, Hasan; Çerezci, Osman (KING FAHD UNIV PETROLEUM MINERALS, 2009)

In this study, a novel solution based on discrete wavelet transform is introduced to determine P- and S-wave arrival times. An algorithm is developed based on changes in frequencies and energy in high frequency bands. ...
DETERMINATION OF THE ELECTROMAGNETIC POLLUTION IN LOCAL SCHOOL INDOOR AND OUTDOOR ENVIRONMENTS

Yener, Şuayb Çağrı; Çerezci, Osman; S. Selim Seker (ISTANBUL UNIV, FAC ENGINEERING, 2017)

This paper presents and analyses combining measurement of the RF and ELF bands of the EMF's from the external sources located around the 24 schools in Nilufer / Bursa, TURKEY throughout 2013 - 2015. The study has been ...
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 ...
Electromagnetic Radiation Interaction and Pollution Measurements

Çerezci, Osman; Çerezci, Feyza (IEEE, 2017)

Electromagnetic waves caused from base stations, which are rapidly increasing due to the opportunities provided by modern technology, create an undesired effective electromagnetic pollution in the environment. Mobile phones, ...
Frequency-energy variability characterization of local real-time noisy seismic records

Arman, Hasan; Çerezci, Osman (WORLD SCIENTIFIC PUBL CO PTE LTD, 2008)

In this study, we have presented a new approach to separate noisy components and to characterize frequency-energy variability for local real-time noisy earthquakes where epicentral distance is 0-10 degrees. This approach ...
Heat analysis of biological tissue exposed to microwave by using thermal wave model of bio-heat transfer (TWMBT)

Çerezci, Osman (ELSEVIER SCI LTD, 2008)

Thermal analyses of biological tissues exposed to microwaves were studied by using thermal wave model of bio-heat transfer (TWMBT). As a model, skin stratified as three layers with various thermal physical properties were ...
IEEE Conference on Antenna Measurements & Applications

A. Yasin Citkaya; S. Selim Seker; Çerezci, Osman (IEEE, 2016)

The purpose of this project is to show the biological effects of the wireless smart meters on human body. There are lots of EMR sources in the world. Especially in home appliances some all electrical appliances emit EMR. ...
LECTURE NOTES IN ARTIFICIAL INTELLIGENCE

Yumuşak, Nejat; Çerezci, Osman; Temurtaş, Feyzullah (SPRINGER-VERLAG BERLIN, 2004)

In this study, the method to apply the Elman's recurrent neural networks using resilient back propagation for harmonic detection is described. The feed forward neural networks are also used for comparison. The distorted ...