Current Issue : January - March Volume : 2013 Issue Number : 1 Articles : 5 Articles
The cities are not static environments. They change constantly. When we talk about traffic in\r\nthe city, the evolution of traffic lights is a journey from mindless automation to increasingly\r\nintelligent, fluid traffic management. In our approach, presented in this paper, reinforcementlearning\r\nmechanism based on cost function is introduced to determine optimal decisions for each\r\ntraffic light, based on the solution given by Larry Page for page ranking in Web environment\r\nPage et al. 1999. Our approach is similar with work presented by Sheng-Chung et al. 2009\r\nand Yousef et al. 2010. We consider that the traffic lights are controlled by servers and a score\r\nfor each road is computed based on efficient PageRank approach and is used in cost function to\r\ndetermine optimal decisions. We demonstrate that the cumulative contribution of each car in the\r\ntraffic respects the main constrain of PageRank approach, preserving all the properties ofMmatrix\r\nconsider in our model....
In this paper,we prove the existence and uniqueness of a new Meir-Keeler type coupled fixed point\r\ntheorem for two mappings F : X Ã?â?? X ? X and g : X ? X on a partially ordered partial metric\r\nspace. We present an application to illustrate our obtained results. Further, we remark that the\r\nmetric case of our results proved recently in Gordji et al. 2012 have gaps. Therefore, our results\r\nrevise and generalize some of those presented in Gordji et al. 2012....
Propagation of nonlinear guided waves is a very attracting phenomenon for structural health\r\nmonitoring applications that has received a lot of attention in the last decades. They exhibit very\r\nlarge sensitivity to structural conditions when compared to traditional approaches based on linear\r\nwave features. On the other hand, the applicability of this technology is still limited because of\r\nthe lack of a solid understanding of the complex phenomena involved when dealing with real\r\nstructures. In fact the mathematical framework governing the nonlinear guided wave propagation\r\nbecomes extremely challenging in the case of waveguides that are complex in either materials\r\ndamping, anisotropy, heterogeneous, etc. or geometry multilayers, geometric periodicity, etc..\r\nThe present work focuses on the analysis of nonlinear second-harmonic generation in complex\r\nwaveguides by extending the classical Semianalytical Finite Element formulation to the nonlinear\r\nregime, and implementing it into a powerful commercial Finite Element package. Results are\r\npresented for the following cases: a railroad track and a viscoelastic plate. For these casestudies\r\noptimum combinations of primary wave modes and resonant double-harmonic nonlinear\r\nwave modes are identified. Knowledge of such combinations is critical to the implementation of\r\nstructural monitoring systems for these structures based on higher-harmonic wave generation....
The concept of residual lifetime has attracted considerable research interest in reliability theory.\r\nIt is useful for evaluating the dynamic behavior of a system. In this paper, we study the extreme\r\nresidual lives, that is, the minimum and maximum residual lives of the remaining components\r\nafter the failure of the system. The system is assumed to have an arbitrary structure. We obtain\r\nsignature-based distributional and ordering results for the extreme residual lives....
This paper investigates the interpolation formulae and the sampling theorem for bandpass signals\r\nin the linear canonical transform LCT domain. Firstly, one of the important relationships between\r\nthe bandpass signals in the Fourier domain and the bandpass signals in the LCT domain is derived.\r\nSecondly, two interpolation formulae from uniformly sampled points at half of the sampling rate\r\nassociated with the bandpass signals and their generalized Hilbert transform or the derivatives\r\nin the LCT domain are obtained. Thirdly, the interpolation formulae from nonuniform samples\r\nare investigated. The simulation results are also proposed to verify the correctness of the derived\r\nresults....
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