Editor-in-Chief
Professor Pierre Borne
ex IEEE France Section Chair, IEEE Fellow, IEEE/SMC Past President, Ecole Centrale de Lille,
BP 48, 59651 Villeneuve d'Ascq, France
Associate Editors:
Prof. Mikhael Wasfy, IEEE Fellow, University of Central Florida, Orlando, Florida, USA
Prof. Theodore B. Trafalis, University of Oklahoma, Norman, OK, USA
Prof. Ronald R. Yager, IEEE Fellow, Iona College, New Rochelle, NY, USA
Prof. Tadeusz Kaczorek, IEEE Fellow, Warsaw University of Technology, Poland
Prof. Bimal Kumar Bose, Life Fellow IEEE, The University of Tennessee, Knoxville, USA
Prof. D. Subbaram Naidu, IEEE Fellow, University of Minnesota Duluth, USA
Prof. Narsingh Deo, IEEE Fellow, ACM Fellow, University of Central Florida, USA

WSEAS TRANSACTIONS ON SYSTEMS

2001-2016:  15 years of Excellence in SYSTEMS THEORY AND APPLICATIONS

Upload your papers via http://wseas.org/wseas/cms.action?id=4067 

Acceptance Rate (for the years 2013 and 2014): 23.26% 
Acceptance Rate = C/D where: C = the number of accepted papers, D= the number of submitted papers. Withdrawn Papers are not considered for the numbers C and D.

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Title of the Paper: Highly Efficient Ultra-Compact Isolated DC-DC Converter with Fully Integrated Active Clamping H-Bridge and Synchronous Rectifier

Authors: Jan Doutreloigne (BELGIUM)

Abstract: An isolated forward DC-DC converter with monolithically integrated electronics at both sides of the pulse transformer is presented. It converts a 48V DC input voltage into a 12V DC output voltage at 7A load current with a 90.8% overall power efficiency, employing an 800kHz switching frequency, and it occupies a physical volume of 55mm x 35mm x 10mm only. The primary winding of the planar pulse transformer is driven by a new 4-transistor active clamping H-bridge circuit topology that significantly reduces the voltage requirements for the DMOS power devices, thereby enabling monolithic integration of the primary-side electronics in an 80V 0.35?m junction-isolated smart-power IC technology. The switching signal at the secondary winding of the planar pulse transformer is converted into a stable DC output voltage by means of a new synchronous rectifier circuit topology that employs an additional DC-DC buck converter and drastically reduces the dynamic switching losses in the DMOS power devices, thereby boosting the power efficiency and enabling monolithic integration of the secondary-side electronics in an 80V 0.35?m junction-isolated smart-power IC technology.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #12, pp. 102-109

Title of the Paper: Recent Results on Nonlinear, Optimal Regulation and Tracking: Theory and Applications

Authors: Ahmed Khamis, D. Subbaram Naidu (USA)

Abstract: The topic of single or multiple objective, optimal control or design has been a very attractive and desirable feature for many dynamic and static systems such as aerospace, electrical, mechanical and robotics, nuclear and aerospace engineering. In particular, in dynamic optimization of nonlinear systems, recent research interest has been the nonlinear, optimal, feedback control using State-Dependent Riccati Equation (SDRE) arising in regulator and tracking problems. This topic can be thought of as the nonlinear counterpart of the most popular linear, quadratic regulator (LQR) based control design. This paper overviews the recent research results of the authors in the theory of the SDRE for regulation and tracking with applications to many engineering systems under deterministic and stochastic environments. Further, the paper presents some future research directions in the field.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #11, pp. 94-101

Title of the Paper: A Frequency Domain Approach for Design of Stable Fuzzy Logic Systems with Parallel Distributed Compensation

Authors: Snejana Yordanova (BULGARIA)

Abstract: Most industrial processes are nonlinear, multivariable, with time delay, variable parameters and model uncertainty, subjected to disturbances. There exist methods that compensate the impact of these plant peculiarities but are developed for linear control systems. Most of them are based on the system frequency response since they give a compact and easy design solution. A novel frequency domain approach is suggested for the design of fuzzy logic nonlinear systems with parallel distributed compensation (PDC) from requirements for global nonlinear system stability, robustness and good performance. It uses modified transfer functions based Takagi-Sugeno-Kang (TSK) plant model and PDC and the merits of the linear control frequency design methods. The modified PDC-TSK system is represented by a number of equivalent linear systems for which equivalent frequency responses are defined and frequency domain design criteria applied to ensure stability, robustness and desired performance specifications. The approach is demonstrated for the design of a PDC for the real time control of the air temperature in a laboratory scale dryer and its effectiveness confirmed in the experiments.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #10, pp. 85-93

Title of the Paper: A Game-Theoretic Approach for Detection of Overlapping Communities in Dynamic Complex Networks

Authors: Elham Havvaei, Narsingh Deo (USA)

Abstract: Complex networks tend to display communities which are groups of nodes cohesively connected among themselves in one group and sparsely connected to the remainder of the network. Detecting such communities is an important computational problem, since it provides an insight into the functionality of networks. Further, investigating community structure in a dynamic network, where the network is subject to change, is even more challenging. This paper presents a game-theoretic technique for detecting community structures in dynamic as well as static complex networks. In our method, each node takes a role of a player that attempts to gain a higher payoff by joining one or more communities or switching between them. The goal of the game is to reveal community structure formed by these players by finding a Nash-equilibrium point among them. The main contribution of this paper involves the development of a computationally feasible algorithm for extracting high quality community structure by deployment of existing novel game-theoretic techniques. We present the experimental results illustrating the effectiveness of the proposed method on both synthetic and real-world networks.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #9, pp. 73-84

Title of the Paper: An Intelligent Agent Tutor System for Detecting Arabic Children Handwriting Difficulty Based on Immediate Feedback

Authors: Ahmed El-Sawy, Hazem El-Bakry, Mohamed Loey (EGYPT)

Abstract: In this paper, an intelligent tutor application is built for Arabic preschool children called Arab Handwritten Children Educator (AHCE). AHCE allows Arab children to do practice at anytime and anywhere. As an intelligent tutor, the AHCE can automatically check the handwriting errors, such as stroke sequence errors, stroke direction error, stroke position error, and extra stroke errors. The AHCE provide a useful feedback to Arab children to correct their mistakes. In this paper, attributed mathematics and agents are used to locate the handwritten errors. The system applies a fuzzy approach to evaluate Arabic children handwriting. Experimental results indicate that the proposed intelligent system successfully detect handwriting strokes errors with immediate feedback.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #8, pp. 63-72

Title of the Paper: System Reliability, Fault Tolerance and Design Metrics Tradeoffs in the Distributed Minority and Majority Voting Based Redundancy Scheme

Authors: P. Balasubramanian (SINGAPORE)

Abstract: The distributed minority and majority voting based redundancy (DMMR) scheme was recently proposed as an efficient alternative to the conventional N-modular redundancy (NMR) scheme for the physical design of mission/safety-critical circuits and systems. The DMMR scheme enables significant improvements in fault tolerance and design metrics compared to the NMR scheme albeit at the expense of a slight decrease in the system reliability. In this context, this paper studies the system reliability, fault tolerance and design metrics tradeoffs in the DMMR scheme compared to the NMR scheme when the majority logic group of the DMMR scheme is increased in size relative to the minority logic group. Some example DMMR and NMR systems were realized using a 32/28nm CMOS process and compared. The results show that 5-of-M DMMR systems have a similar or better fault tolerance whilst requiring similar or fewer function modules than their counterpart NMR systems and simultaneously achieve optimizations in design metrics. Nevertheless, 3-of-M DMMR systems have the upper hand with respect to fault tolerance and design metrics optimizations than the comparable NMR and 5-of-M DMMR systems. With regard to system reliability, NMR systems are closely followed by 5-of-M DMMR systems which are closely followed by 3-of-M DMMR systems. The verdict is 3-of-M DMMR systems are preferable to implement higher levels of redundancy from a combined system reliability, fault tolerance and design metrics perspective to realize mission/safety-critical circuits and systems.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #7, pp. 59-62

Title of the Paper: Fast Information Detection in Big Data using Neural Networks and Matrix Decomposition

Authors: Hazem M. El-Bakry (EGYPT)

Abstract: In previous work, fast neural networks (FNNs) for information extraction was presented. The operation of these networks relies on performing cross-correlation between the input patterns and the weights of processing elements in the frequency domain. In this paper, a new strategy to accelerate this approach is introduced. Such strategy applies the concept of divide and conquer to reduce the number of calculation steps required by FNNs. The big data matrix is decomposed into smaller sub-matrices. Each generated sub-matrix is processed by using a single FNN implemented in the frequency domain. As a result, the speed up ratio is increased with the size of the input big data matrix. This is in contrast to using only FNNs. Simulation results show that the proposed approach for information detection in big data is faster than the conventional neural networks and FNNs. Moreover, experimental results for big data matrices with different sizes show good performance.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #6, pp. 49-58

Title of the Paper: Shifting Method for Relay Feedback Identification and Control of Delayed Systems

Authors: Milan Hofreiter (CZECH REPUBLIC)

Abstract: The paper deals with identification and control of time delay stable plants. A single relay feedback test and the new method called “shifting method” are used for plant identification. For this purpose an asymmetric relay is used. This approach enables to estimate three points on a plant frequency response for three important frequencies from sustained oscillations obtained by a single relay test without using the FFT algorithm. This technique extends possibilities of relay feedback identification and allows fitting up to five parameters of plant transfer functions. This identification method is used for estimating five parameters of the selected anisochronic model that is very universal and convenient for modelling time delay stable systems. This model is then used for anisochronic controller design. The anisochronic controller is proposed by the Desired Model Method. The shifting method and the anisochronic controller design are demonstrated on one simulation example and on the laboratory apparatus called “Air Aggregate”. These experiments were performed using Matlab/Simulink programing environment. The introduced approach provides an automatic tuning tool for a large class of common control problems.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #5, pp. 39-48

Title of the Paper: Methodological Approach to the Substantiation of the Form of Compact Build-Up Development Areas with the Aim of their Renovation

Authors: Sergei I. Matreninskiy, Valeriy Y. Mischenko (RUSSIA)

Abstract: This paper proposes a methodological approach to the establishment of a rational form of the parts of compact build-up development areas intended for reconstruction in accordance with modern requirements. Modernization of the parts of these areas involves renovation of the entire complex of objects located in these areas and requiring reconstruction. These objects include: residential and public buildings, engineering networks, road infrastructure, parks, squares and others. The basis of substantiation of the form of the parts of urban areas for their reconstruction is the principle of similarity of the indicators of physical and moral depreciation, the number of floors in the residential buildings located in these areas and meant for renovation. This is due to the fact that this principle, on the one hand, realizes one of the main needs of society that is safe and comfortable residential buildings, and on the other hand contributes to typification of constructive and organizational and technological decisions made during the planning of the renovation of residential buildings at the given part of the urban area. The methodological approach includes a combination of the following methods: model representation of compact build-up development areas as a system – city planning formations (CPF); determination of physical and moral depreciation of the CPF and its components; method of generating variants of CPF; method of evaluating the effectiveness of the selected variants; method of selecting rational variants of CPF from the generated ones.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #4, pp. 28-38

Title of the Paper: Proposal of a Model Based Fault Identification Neural Technique for more-Electric Aircraft Flight Control EM Actuators

Authors: Matteo Dalla Vedova, Paolo Maggiore, Lorenzo Pace, Simone Romeo (ITALY)

Abstract: There are many different ways to detect incipient failures of electromechanical actuators (EMA) of primary flight command provoked by progressive wear. With the development of a prognostic algorithm it’s possible to identify the precursors of an electromechanical actuator failure, to gain an early alert and so get a proper maintenance and a servomechanism replacement. The present work aims to go beyond prognostic algorithms strictly technology-oriented and based on accurate analysis of the cause and effect relationships because if on one hand they show great effectiveness for some specific applications, instead they mostly fail for different applications and technologies. Through the development of a simulation test bench the authors have demonstrated a robust method to early identify incoming failures and reduce the possibility of false alarms or non-predicted problems. Authors took into account friction, backlash, coil short circuit and rotor static eccentricity failures and defined a model-based fault detection neural technique to assess data gained through Fast Fourier Transform (FFT) analysis of the components under normal stress conditions.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #3, pp. 19-27

Title of the Paper: Estimation Results on the Location Error when Using Cable Locator

Authors: Hitoshi Kijima,Tomohiko Hattori (JAPAN)

Abstract: A cable locator discovers the location as well as depth of underground pipes, cables and wires. Telecommunications services have been interrupted by cutting off underground telecommunications cables installed inside ducts during road construction. In order to prevent such an accident, it is necessary to identify the location of the cables. The system detecting a burial location of the cables is introduced by measuring the maximum magnetic field distribution on the earth surface generated by signaling current flowing through the cables installed inside the ducts. However, an error occurred in the burial location of the cables, when several ducts (it is called three kinds, a vinyl pipe, a cast iron pipe, and a steel pipe) are installed. Therefore, the magnetic field distributions depending on the duct arrangements were analyzed in order to estimate the errors using finite element method.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #2, pp. 11-18

Title of the Paper: A Three-Stage Framework for Clustering Mixed Data

Authors: Shi-Hua Liu, Liang-Zhong Shen, De-Cai Huang (CHINA)

Abstract: A three-stage framework and a simple implemented algorithm for clustering mixed data are proposed. In the framework, the mixed dataset is divided into several subsets according to the different types of attributes, and each subset is clustered using according off-the-shelf algorithms, the results are combined as a new categorical dataset and then be clustered. The final result is the answer for clustering the original mixed dataset. The experimental results show that the proposed framework and the implemented algorithm can be used to cluster the mixed dataset efficiently and it is prior to the k-prototypes.

WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 15, 2016, Art. #1, pp. 1-10