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Browsing Bilgisayar ve Bilişim Bilimleri Fakültesi by Author "Çavuşoğlu, Ünal"

Now showing items 1-20 of 22

A Chaotic System with Infinite Equilibria and Its S-Box Constructing Application

Xiong Wang; Akif; Çavuşoğlu, Ünal (MDPI, 2018)

Systems with many equilibrium points have attracted considerable interest recently. A chaotic system with a line equilibrium has been studied in this work. The system has infinite equilibria and exhibits coexisting chaotic ...
A Chaotic System with Infinite Number of Equilibria Located on an Exponential Curve and Its Chaos-Based Engineering Application

Saleh Mobayen; Christos K. Volos; Sezgin Kacar; Çavuşoğlu, Ünal; Behrouz Vaseghi (WORLD SCIENTIFIC PUBL CO PTE LTD, 2018)

This paper proposes a novel chaotic system with infinite number of equilibria located on an exponential curve. It signifies an exciting category of dynamical systems which display many features of regular and chaotic ...
A new 4-D chaotic hyperjerk system, its synchronization, circuit design and applications in RNG, image encryption and chaos-based steganography

S. Vaidyanathan; Akgül, Akif; Kaçar, Sezgin; Çavuşoğlu, Ünal (SPRINGER HEIDELBERG, 2018)

Hyperjerk systems have received significant interest in the literature because of their simple structure and complex dynamical properties. This work presents a new chaotic hyperjerk system having two exponential nonlinearities. ...
A new chaotic system with hidden attractor and its engineering applications: analog circuit realization and image encryption

Çavuşoğlu, Ünal; Shirin Panahi; Akgül, Akif; Sajad Jafari; Sezgin Kacar (SPRINGER, 2019)

In this article a simple chaotic flow with hidden attractor is proposed. Various dynamics of this new system such as periodic and chaotic oscillations can be achieved by setting bifurcation parameters in a proper value. ...
A New Chaotic System with Multiple Attractors: Dynamic Analysis, Circuit Realization and S-Box Design

Qiang Lai; Akif Akgul; Chunbiao Li; Guanghui Xu; Çavuşoğlu, Ünal (MDPI AG, 2018)

This paper reports about a novel three-dimensional chaotic system with three nonlinearities. The system has one stable equilibrium, two stable equilibria and one saddle node, two saddle foci and one saddle node for different ...
A new hybrid approach for intrusion detection using machine learning methods

Çavuşoğlu, Ünal (SPRINGER, 2019)

In this study, a hybrid and layered Intrusion Detection System (IDS) is proposed that uses a combination of different machine learning and feature selection techniques to provide high performance intrusion detection in ...
A new three-dimensional chaotic system with a cloud-shaped curve of equilibrium points, its circuit implementation and sound encryption

Sundarapandian Vaidyanathan; Aceng Sambas; Sezgin Kacar; Çavuşoğlu, Ünal (INDERSCIENCE ENTERPRISES LTD, 2018)

In the chaos literature, significant attention has been paid to chaotic systems with uncountable equilibrium points such as chaotic systems with line equilibrium, curve equilibrium, etc. This paper reports a novel chaotic ...
A novel approach for strong S-Box generation algorithm design based on chaotic scaled Zhongtang system

Çavuşoğlu, Ünal; Zengin, Ahmet; Pehlivan, İhsan; Kaçar, Sezgin (SPRINGER, 2017)

Substitution Box (S-Box) is one of the most significant structures used to create an encryption which is strong and resistant against attacks in block encryption algorithms. S-Box plays an important role in data encryption. ...
A novel chaos-based encryption algorithm over TCP data packet for secure communication

Çavuşoğlu, Ünal; Akgül, Akif; Sezgin Kacar; Pehlivan, İhsan; Zengin, Ahmet (WILEY-HINDAWI, 2016)

In this article, a new algorithm that can encrypt data on TCP data segment by using a novel chaotic random number generator was developed. First of all, dynamic analyses of the chaotic system to be used were made and the ...
A Novel Chaotic System With Boomerang-Shaped Equilibrium, Its Circuit Implementation and Application to Sound Encryption

Saleh Mobayen; Sundarapandian Vaidyanathan; Aceng Sambas; Sezgin Kacar; Çavuşoğlu, Ünal (SPRINGER INTERNATIONAL PUBLISHING AG, 2019)

In the chaos literature, there has been much attention paid to chaotic systems with uncountable equilibrium points such as systems with line equilibrium, curve equilibrium. This paper reports a 3-D chaotic system with a ...
A novel defect prediction method for web pages using k-means plus

Muhammed Maruf Ozturk; Çavuşoğlu, Ünal; Zengin, Ahmet (PERGAMON-ELSEVIER SCIENCE LTD, 2015)

With the increase of the web software complexity, defect detection and prevention have become crucial processes in the software industry. Over the past decades, defect prediction research has reported encouraging results ...
A novel hybrid encryption algorithm based on chaos and S-AES algorithm

Çavuşoğlu, Ünal; Sezgin Kacar; Zengin, Ahmet; Ihsan Pehlivan (SPRINGER, 2018)

In this study, a novel chaos-based hybrid encryption algorithm design for secure and effective image encryption is presented. To design the algorithm, the Zhongtang chaotic system has been selected because of its rich ...
A Novel Hypogenetic Chaotic Jerk System: Modeling, Circuit Implementation, and Its Application

; Jiancheng Liu; Karthikeyan Rajagopal; Tengfei Lei; Kaçar, Sezgin; Arıcıoğlu, Burak; Çavuşoğlu, Ünal; Kökçam, Abdullah Hulusi; Anitha Karthikeyan (HINDAWI LTD, 2020)

When revising the polarity and amplitude information in the feedback, a unique hypogenetic jerk system was obtained which has two controllers to switch the equilibria between stable and unstable. After providing some basic ...
A NOVEL S-BOX DESIGN ALGORITHM AND FUZZY-PID CONTROLLER DESIGN FOR A 5-D BURKE-SHAW SYSTEM WITH HIDDEN HYPERCHAOS

Qingxia Ma; Wenqiang Luo; Hadi Jahanshahi; Çavuşoğlu, Ünal; Kif Akgul; Xianguang Lin (ACTA PRESS, 2019)

This paper presents a new S-Box design algorithm of hidden hyperchaos in a 5-D hyperchaotic Burke-Shaw system, which is obtained by adding feedback controllers to the classic Burke-Shaw system. Of particular interest is ...
An exponential jerk system, its fractional-order form with dynamical analysis and engineering application

; Karthikeyan Rajagopal; Akgül, Akif; Sajad Jafari; Anitha Karthikeyan; 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

Karthikeyan Rajagopal; Akgül, Akif; Sajad Jafari; Anitha Karthikeyan; Çavuşoğlu, Ünal; Sezgin Kacar (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 ...
Design of A Continuous-Time Autonomous Chaotic Circuit and Application of Signal Masking

Çavuşoğlu, Ünal; Uyaroğlu, Yılmaz; Pehlivan, İhsan (Engineering Architecture, 2014)

Chaos and chaotic systems have many fields of applications. One of the popular practical applications is secure communication. Chaotic signals depend on initial conditions very sensitively. Chaos-based secure communication ...
ENHANCED SECURE DATA TRANSFER FOR WSN USING CHAOTIC-BASED ENCRYPTION

Bayılmış, Cüneyt; Çavuşoğlu, Ünal; Sevin, Abdullah (UNIV OSIJEK, TECH FAC, 2017)

Processes on Wireless Sensor Networks (WSN) and their areas of use have become more widespread, and the issue of net-work security has appeared as one of the primary necessities. As power of the processor, memory and energy ...
New class of chaotic systems with equilibrium points like a three-leaved clover

Saleh Mobayen; Christos K. Volos; Kaçar, Sezgin; Çavuşoğlu, Ünal (SPRINGER, 2018)

This paper presents a new class of chaotic systems with infinite number of equilibrium points like a three-leaved clover. They signify an exciting class of dynamical systems which represent many major characteristics of ...
S-Box Based Image Encryption Application Using a Chaotic System without Equilibrium

Xiong Wang; Çavuşoğlu, Ünal; Sezgin Kacar; Akgül, Akif (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 ...