The contents of the latest issue of: International Journal of System Dynamics Applications (IJSDA) Official Publication of the Information Resources Management Association Volume 2, Issue 2, April – June 2013 Published: Quarterly in Print and Electronically ISSN: 2160-9772, EISSN: 2160-9799 Published by IGI Publishing, Hershey, Pennsylvania, USA www.igi-global.com/ijsda Editor-in-Chief: Ahmad Taher Azar, Benha University, Egypt EDITORIAL PREFACE Special Issue on Soft Computing Techniques for Image Processing Aboul Ella Hassanien, Department of Information Technology, Cairo University, Giza, Egypt, & Scientific Research Group in Egypt (SRGE), Giza, Egypt Ahmad Taher Azar, Faculty of Computers and Information, Benha University, Egypt To obtain a copy of the entire article, click on the link below. http://www.igi-global.com/Files/Ancillary/011db502-710b-4587-8f6e8180722e3202_Pages%20from%202160-9772_2_2_Text.pdf PAPER ONE A PSO-Inspired Multi-Robot Map Exploration Algorithm Using Frontier-Based Strategy Yi Zhou (School of Software, Shanghai Jiao Tong University, Shanghai, China), Kai Xiao (School of Software, Shanghai Jiao Tong University, Shanghai, China), Yiheng Wang (School of Software, Shanghai Jiao Tong University, Shanghai, China), Alei Liang (School of Software, Shanghai Jiao Tong University, Shanghai, China) and Aboul Ella Hassanien (Information Technology Department, Cairo University, Giza, Egypt) Map exploration is a fundamental problem in mobile robots. This paper presents a distributed algorithm that coordinates a team of autonomous mobile robots to explore an unknown environment. The proposed strategy is based on frontiers which are the regions on the boundary between open and unexplored space. With this strategy, robots are guided to move constantly to the nearest frontier to reduce the size of unknown region. Based on the Particle Swarm Optimization (PSO) model incorporated in the algorithm, robots are navigated towards remote frontier after exploring the local area. The exploration completes when there is no frontier cell in the environment. The experiments implemented on both simulated and real robot scenarios show that the proposed algorithm is capable of completing the exploration task. Compared to the conventional method of randomly selecting frontier, the proposed algorithm proves its efficiency by the decreased 60% exploration time at least. Additional experimental results show the decreased coverage time when the number of robots increases, which further suggests the validity, efficiency and scalability. To obtain a copy of the entire article, click on the link below. http://www.igi-global.com/article/a-pso-inspired-multi-robot-map-exploration-algorithm-using-frontierbased-strategy/78748 To read a PDF sample of this article, click on the link below. http://www.igi-global.com/viewtitlesample.aspx?id=78748 PAPER TWO Reliable Face Recognition Using Artificial Neural Network CShaimaa A. El-said (Department of Electronics and Communications, Zagazig University, Zagazig, Egypt) Facial detection and recognition are among the most heavily researched fields of computer vision and image processing. Most of the current face recognition techniques suffer when the noises affect the global features or the local intensity pixels of the images under consideration. In the proposed Reliable Face Recognition System (RFRS) system, for the first time, a combination of Gabor Filter (GF), Principal component analysis (PCA) for efficient feature extraction, and ANN for classification is employed. This demonstrates how to detect faces in noisy images by training the network several times on various input; ideal and noisy images of faces. Applying GF before PCA reduces PCA sensitivity to noise, provides a greater level of invariance, and trains the ANN on different sets of noisy images. The output of the ANN is a vector whose length equal to the distinct subjects in Olivetti Research Laboratory (ORL). The ANN is trained to output a 1 in the correct position of the output vector and to fill the rest of the output vector with 0’s. Experimentation is carried out on RFRS by using ORL datasets. The experimental results show that training the network on noisy input images of face greatly reduce its errors when it had to classify or recognize noisy images. For noisy face images, the network did not make any errors for faces with noise of mean 0.00 or 0.05, while the average recognition rate varies from 96.8% to 98%. When noise of mean 0.10 is added to the images the network begins to make errors. For noiseless face images, the proposed system achieves correct classification. Performance comparison between RFRS and other face recognition techniques shows that for most of the cases, RFRS performs better than other conventional techniques under different types of noises and it shows the high robustness of the proposed algorithm. To obtain a copy of the entire article, click on the link below. http://www.igi-global.com/article/reliable-face-recognition-using-artificial-neural-network/78749 To read a PDF sample of this article, click on the link below. http://www.igi-global.com/viewtitlesample.aspx?id=78749 PAPER THREE Image Color Transfer Approach by Analogy with Taylor Expansion Hongbo Liu (School of Information, Dalian Maritime University, Dalian, China), Ye Ji (School of Information, Dalian Maritime University, Dalian, China) and Aboul Ella Hassanien (Department of Information Technology, Cairo University, Cairo, Egypt) The Taylor expansion has shown in many fields to be an extremely powerful tool. In this paper, the authors investigated image features and their relationships by analogy with Taylor expansion. The kind of expansion could be helpful for analyzing image feature and engraftment, such as transferring color between images. By analogy with Taylor expansion, the image color transfer algorithm is designed by the first and second-order information. The luminance histogram represents the first-order information of image, and the co-occurrence matrix represents the second-order information of image. Some results illustrate the proposed algorithm is effective. In this study, each polynomial in the Taylor analogy expansion of images is considered as one of image features which help in re-understanding images and its features. By using the proposed technique, the features of image, such as color, texture, dimension, time series, would be not isolated but mutual relational based on image expansion. To obtain a copy of the entire article, click on the link below. http://www.igi-global.com/article/image-color-transfer-approach-by-analogy-with-taylorexpansion/78750 To read a PDF sample of this article, click on the link below. http://www.igi-global.com/viewtitlesample.aspx?id=78750 PAPER FOUR Blind Deconvolution of Sources in Fourier Space Based on Generalized Laplace Distribution M. El-Sayed Waheed (Department of Computer Science, Suez Canal University, Ismailia, Egypt), Mohamed-H Mousa (Department of Computer Science, Suez Canal University, Ismailia, Egypt) and Mohamed-K Hussein (Department of Computer Science, Suez Canal University, Ismailia, Egypt) An approach to multi-channel blind de-convolution is developed, which uses an adaptive filter that performs blind source separation in the Fourier space. The approach keeps (during the learning process) the same permutation and provides appropriate scaling of components for all frequency bins in the frequency space. Experiments indicate that Generalized Laplace Distribution can be used effectively to blind de-convolution of convolution mixtures of sources in Fourier space compared to the conventional Laplacian and Gaussian function. To obtain a copy of the entire article, click on the link below. http://www.igi-global.com/article/blind-deconvolution-of-sources-in-fourier-space-based-ongeneralized-laplace-distribution/78751 To read a PDF sample of this article, click on the link below. http://www.igi-global.com/viewtitlesample.aspx?id=78751 PAPER FIVE A Probabilistic Neural Network-Based Module for Recognition of Objects from their 3-D Images Onsy A. Abdel Alim (Department of Electrical Engineering, Beirut University, Beirut, Lebanon), Amin Shoukry (Computer Department, Egyptian Japanese University of Science and Technology (EJUST), Alexandria, Egypt), Neamat A. Elboughdadly (Department of Electrical Engineering, Faculty of Engineering, Alexandria University, Alexandria, Egypt) and Gehan Abouelseoud (Department of Engineering, Alexandria University, Alexandria, Egypt) In this paper, a pattern recognition module that makes use of 3-D images of objects is presented. The proposed module takes advantage of both the generalization capability of neural networks and the possibility of manipulating 3-D images to generate views at different poses of the object that is to be recognized. This allows the construction of a robust 3-D object recognition module that can find use in various applications including military, biomedical and mine detection applications. The paper proposes an efficient training procedure and decision making strategy for the suggested neural network. Sample results of testing the module on 3-D images of several objects are also included along with an insightful discussion of the implications of the results. To obtain a copy of the entire article, click on the link below. http://www.igi-global.com/article/a-probabilistic-neural-network-based-module-for-recognition-ofobjects-from-their-3-d-images/78752 To read a PDF sample of this article, click on the link below. http://www.igi-global.com/viewtitlesample.aspx?id=78752 ***************************************************** For full copies of the above articles, check for this issue of the International Journal of System Dynamics Applications (IJSDA) in your institution's library. This journal is also included in the IGI Global aggregated "InfoSci-Journals" database: http://www.igi-global.com/EResources/InfoSciJournals.aspx. ***************************************************** CALL FOR PAPERS Mission of IJSDA: The mission of the International Journal of System Dynamics Applications (IJSDA) is to provide a deeper understanding of the dynamic behavior of complex systems. The journal promotes the development of System Dynamics (SD) and the interchange of learning and research in related fields. As limited applications related to systems engineering and non-linear control systems and their dynamics exist in the literature, the journal provides this research from an engineering perspective. The journal publishes advances in mathematical modeling, computer simulations of dynamic feedback systems, and methods and applications of systems thinking approaches to promote this mission. Coverage of IJSDA: Topics to be discussed in this journal include (but are not limited to) the following: Complex nonlinear dynamics and deterministic chaos Complexity/Agent-Based Modeling Control of chaotic systems Corporate planning and policy design based on information feedback and circular causality Decision support systems Discrete event dynamic systems Dynamics decision making Economic dynamics Energy and environmental dynamics Generic structures (dynamic feedback systems that support particular widely applicable behavioural insights) Healthcare dynamics Mathematical modeling and computer simulation of dynamic feedback systems Model calibration and validation Modelling and analysis of engineering systems Modelling physiological systems Nonlinear and linear system identification Nonlinear system control Non-smooth dynamical systems with impacts or discontinuities Operations management and supply chains Optimal control and applications Psychology and social dynamics Qualitative system dynamics Significant contributions to system dynamics teaching Soft computing (artificial intelligence, neural networks, fuzzy logic, genetic algorithms, etc.) Static and dynamic systems modeling System thinking Various control techniques IGI Global is pleased to offer a special Multi-Year Subscription Loyalty Program. In this program, customers who subscribe to one or more journals for a minimum of two years will qualify for secure subscription pricing. IGI Global pledges to cap their annual price increase at 5%, which guarantees that the subscription rates for these customers will not increase by more than 5% annually. Interested authors should consult the journal's manuscript submission guidelines at www.igiglobal.com/ijsda. All inquiries and submissions should be sent to: Ahmad Taher Azar, E-mail: ahmad_t_azar@ieee.org.