Yazar "Kaçar, Sezgin" için listeleme
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Chaos-based encryption of multimedia data and design of security analysis interface as an educational tool
Akgül, Akif; Kaçar, Sezgin; Pehlivan, İhsan; Arıcıoğlu, Burak (Wiley, 2018)Data encryption has always been a topical subject. There are many encryption methods in the literature. Chaos-based encryption is considered a different area of study among the encryption practices. In this study, a novel ... -
Chaos-based image encryption
Kaçar, Sezgin; Çavuşoğlu, Ünal; Jahanshahi, Hadi (Elsevier, 2024)Chaos-based encryption applications are at the forefront of engineering applications based on chaotic systems. When the studies in the literature are examined, it is seen that chaos-based image encryption applications are ... -
CLASSIFICATION of GRINDING BURNS in BEARINGS with TRANSFER LEARNING
Ceylan, Nurdoǧan; Kaçar, Sezgin; Chu, Yu-Ming; Alotaibi, Naif D. (World Scientific, 2023)Grinding is used to improve surface roughness and dimensioning precision in the metal industry. A large amount of heat is released during grinding. Most of this heat is transferred to the workpiece. In this case, a grinding ... -
Cost effective detection of uneven mounting fault in rotary wing drone motors with a CNN based method
Ceylan, Nurdoğan; Sönmez, Eyüp; Kaçar, Sezgin (Springer Science and Business Media Deutschland GmbH, 2024)Rotary wing drones stand out among Unmanned Aerial Vehicles with their vertical landing and take-off feature and are used in many industrial applications and different sectors. Ensuring the stability of motion in these ... -
Crowd sensing aware disaster framework design with IoT technologies
Küçük, Kerem; Bayılmış, Cüneyt; Sönmez, Ahmet Furkan; Kaçar, Sezgin (Springer Heidelberg, 2020)When a disaster occurs, a huge amount of inconsistent victim or damage information data is received by many different sources. Disaster management systems achieve the completion of a significantly vital task, which is to ... -
Deep learning based classification of time series of Chen and Rössler chaotic systems over their graphic images
Arıcıoğlu, Burak; Uzun, Süleyman; Kaçar, Sezgin (Elsevier, 2022)In this study, the graphic images of time series of different chaotic systems are classified with deep learning methods for the first time in the literature. For the classification, a datasetcontains images of time series ... -
Deep learning-based classification of chaotic systems over phase portraits
Kaçar, Sezgin; Uzun, Süleyman; Arıcıoğlu, Burak (Turkish Journal of Electrical Engineering and Computer Sciences, 2023)This study performed a deep learning-based classification of chaotic systems over their phase portraits. To the best of the authors’ knowledge, such classification studies over phase portraits have not been conducted in ... -
Doğrusal olmayan sistemlerde volterra serileri tabanlı tanımlama fonksiyonu ile frekans analizi
Güleryüz, Emre (Sakarya Uygulamalı Bilimler Üniversitesi, 2019)Doğrusal olmayan sistemlerin modellenmesi ve analizi konusu ele alındığında yöntemlerin zaman ve frekans boyutunda olmak üzere iki temel sınıfa ayrıldığı görülmektedir. Zaman boyutundaki yöntemler ile doğrusal olmayan ... -
Doğrusal olmayan yeni bir sistem ile damar görüntülerinin mikrobilgisayar tabanlı olarak şifrelenmesi
Akgül, Akif; Yıldız, Mustafa Zahid; Boyraz, Ömer Faruk; Güleryüz, Emre; Kaçar, Sezgin; Güvercin, Bilal (2020)Bu çalışmada yeni bir kaotik sistem ile mikrobilgisayar tabanlı olarak el üstü damar görüntülerininşifrelenerek, güvenli bir şekilde veri tabanında saklanması ve kullanılması amaçlanmıştır. Çalışmakapsamında öncelikle ... -
Dynamic Analysis and Circuit Design of a New 3D Highly Chaotic System and its Application to Pseudo Random Number Generator (PRNG) and Image Encryption
Sambas, Aceng; Benkouider, Khaled; Kaçar, Sezgin; Ceylan, Nurdoğan; Vaidyanathan, Sundarapandian; Sulaiman, Ibrahim Mohammed; Mohamed, Mohamad Afendee; Ayob, Ahmad Faisal Mohamad; Muni, Sishu Shankar (Springer, 2024)In this paper, a new 3D dynamical system with four quadratic nonlinear terms is presented. It is shown that the proposed chaotic system has two saddle-foci, unstable, equilibrium points. Thus, the proposed chaotic system ... -
Dynamical investigation and chaotic associated behaviors of memristor Chua's circuit with a non-ideal voltage-controlled memristor and its application to voice encryption
Rajagopal, Karthikeyan; Kaçar, Sezgin; Wei, Zhouchao; Duraisamy, Prakash; Kifle, Teweldbrhan; Karthikeyan, Anitha (Elsevier Gmbh, 2019)In this paper we modified the conventional Chua's circuit with a non-ideal voltage-controlled memristor with a quadratic internal state. Dynamical behaviors of Modified Memristor based Chua's Circuit (MMCC) are investigated ... -
An exponential jerk system, its fractional-order form with dynamical analysis and engineering application
Rajagopal, Karthikeyan; Akgül, Akif; Jafari, Sajad; Karthikeyan, Anitha; Çavuşoğlu, Ünal; Kaçar, Sezgin (Springer, 2020)A simple jerk system with only one exponential nonlinearity is proposed and discussed. Dynamic analysis of the integer-order jerk system shows the existence of chaotic oscillations. A model for the fractional-order jerk ... -
An Exponential Jerk System: Circuit Realization, Fractional Order and Time Delayed Form with Dynamical Analysis and Its Engineering Application
Rajagopal, Karthikeyan; Akgül, Akif; Jafari, Sajad; Karthikeyan, Anitha; Çavuşoğlu, Ünal; Kaçar, Sezgin (World Scientific Publ Co Pte Ltd, 2019)Simple dynamical systems are of interest always. In this paper, we propose a simple jerk system with one exponential nonlinearity. Dynamical properties of the proposed system are investigated. To show the practical ... -
Fractional Order Simple Chaotic Oscillator with Saturable Reactors and Its Engineering Applications
Rajagopal, Karthikeyan; Jafari, Sajad; Kaçar, Sezgin; Karthikeyan, Anitha; Akgül, Akif (Kaunas Univ Technology, 2019)Chaos is often observed in forced nonlinear electrical circuits with saturable reactors. Simplest of such a circuit is presented and investigated in both integer order and non-integer (fractional) order form. For numerical ... -
IoT Teknolojilerini Kullanan Afet Sonrası Yönetim Sistemi
Deprem, sel vb. afet olaylarından sonra can ve mal kaybı gibi afetin etkilerini azaltmak için afet bölgesinden doğru ve hızlı bilgi edinilmesi büyük önem arz etmektedir. Bu bilgi afet sonrası yönetim sistemlerinin de ... -
A New Approach for Super Resolution Object Detection Using an Image Slicing Algorithm and the Segment Anything Model
Telçeken, Muhammed; Akgün, Devrim; Kaçar, Sezgin; Bingöl, Bünyamin (Multidisciplinary Digital Publishing Institute (MDPI), 2024): Object detection in high resolution enables the identification and localization of objects for monitoring critical areas with precision. Although there have been improvements in object detection at high resolution, the ... -
A new data-hiding algorithm for multi-channel biomedical signals based on variable-order fractional chaotic neural networks with frequency effect
Kaçar, Sezgin (Springer Heidelberg, 2021)In this study, a new variable-order fractional chaotic neural network with frequency effect is proposed based on Hopfield Neural Network Under Electromagnetic Radiation, which is used to model brain functions in the ... -
A new fractional-order hyperchaotic memristor oscillator: Dynamic analysis, robust adaptive synchronization, and its application to voice encryption
Jahanshahi, Hadi; Yousefpour, Amin; Munoz-Pacheco, Jesus M.; Kaçar, Sezgin; Viet-Thanh Pham; Alsaadi, Fawaz E. (Elsevier Science Inc, 2020)The present study proposes a new fractional-order hyperchaotic memristor oscillator. The proposed system is studied through numerical simulations and analyses, such as the Lyapunov exponents, bifurcation diagrams, and phase ... -
Performance Evaluation of Lightweight Encryption Algorithms for IoT-Based Applications
Panahi, Pejman; Bayılmış, Cüneyt; Çavuşoğlu, Ünal; Kaçar, Sezgin (Springer Heidelberg, 2021)Today, all smartphones, notebooks, or other communication devices could connect to the cloud, so the data are accessible everywhere. When these devices are interconnected through the internet, they make an Internet of ... -
S-Box Based Image Encryption Application Using a Chaotic System without Equilibrium
Wang, Xiong; Çavuşoğlu, Ünal; Kaçar, Sezgin; Akgül, Akif; Viet-Thanh Pham; Jafari, Sajad; Xuan Quynh Nguyen (Mdpi, 2019)Chaotic systems without equilibrium are of interest because they are the systems with hidden attractors. A nonequilibrium system with chaos is introduced in this work. Chaotic behavior of the system is verified by phase ...