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S.S. Chowhan¹, G.N. Shinde²
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 1-12, 2008, DOI:10.3970/icces.2008.006.001
Abstract Authentication plays a very critical role in security-related applications like e-commerce. There are a number of methods and techniques for accomplishing this key process. Biometrics is gaining increasing attention in these days. Security systems, having realized the value of biometrics, use biometrics for two basic purposes: to verify or identify users. The use of fingerprints, facial characteristics and other biometrics for identification is becoming more common. This paper overview best of Biometric application for security management. The acquisition of biometric data introduces human research and privacy concerns that must be addressed by the organizations. This paper focus Iris is the… More >

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783

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K Nagamani Devi¹, D.W. Pepper²
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 13-18, 2008, DOI:10.3970/icces.2008.006.013
Abstract Over the past few years, efforts have been made to solve fluid flow and heat transfer problems using radial basis functions. This approach is meshless, easy to understand, and simple to implement. Preliminary results indicate accuracies on the order of finely meshed conventional techniques, but with considerably less computational effort. In this study, a projection-based technique is used to solve the primitive equations of motion and energy using radial basis functions. Three benchmark test cases are examined: (1\hbox {}) lid-driven cavity flow, (2\hbox {}) natural convection in a square enclosure, and (3\hbox {}) flow with forced convection over backward facing… More >

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776

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M. Patrício¹, R. Mattheij¹, G. de With²
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 19-24, 2008, DOI:10.3970/icces.2008.006.019
Abstract The behaviour of composite materials with periodically distributed constituents is considered. Mathematically, this can be described by a boundary value problem with highly oscillatory coefficient functions. An algorithm is proposed to handle the case when the underlying periodicity is locally disturbed. This procedure is constructed using fundamental concepts from homogenisation theory and domain decomposition techniques. Applications to linearly elastic materials are considered. More >

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668

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S.P. Hu¹, D.L. Young^1,2, C.M. Fan¹
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 25-50, 2008, DOI:10.3970/icces.2008.006.025
Abstract In this paper, a novel numerical scheme called (FDMFS), which combines the finite difference method (FDM) and the method of fundamental solutions (MFS), is proposed to simulate the nonhomogeneous diffusion problem with an unsteady forcing function. Most meshless methods are confined to the investigations of nonhomogeneous diffusion equations with steady forcing functions due to the difficulty to find an unsteady particular solution. Therefore, we proposed a FDM with Cartesian grid to handle the unsteady nonhomogeneous term of the equations. The numerical solution in FDMFS is decomposed into a particular solution and a homogeneous solution. The particular solution is constructed using… More >

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655

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Wolfgang Baer¹, Rita Pizzi²
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 51-71, 2008, DOI:10.3970/icces.2008.006.051
Abstract The difficulties encountered in explaining the capacities of the human brain to generate conscious experiences with a neuron switching model has lead researchers to speculate that quantum phenomena may be involved in the human thinking process. This speculation goes beyond acknowledgement of the quantum mechanical basis for bio-molecular chemistry but suggests the architecture of brain functioning parallels the architecture of quantum computers. In this model classically observed neural components act like transmitting and receiving channels to quantum elements analogous to the state-preparation and measurement components in quantum computer architectures. Theories proposed by Penrose and Hameroff suggest such quantum element fields… More >

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636

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M. Katagiri, H. Onodera¹, H. Ogawa², N. Nishikawa³
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 72-80, 2008, DOI:10.3970/icces.2008.006.072
Abstract The microscopic mechanism of Hydrogen-Induced Amorphization (HIA) in C15 Laves phases of AB$_2$ compounds is studied. Experimentally, compounds in which the AA internuclear distance is reduced and BB internuclear distance expanded compared to pure crystals show Hydrogen-Induced Amorphization which suggests that the relative atomic size is the controlling factor. We investigate the role of the size effect by static and Molecular Dynamics methods using Lennard-Jones potentials. Our simulations show that in such a compound, the bulk modulus is remarkably reduced by hydrogenation compared to the isotropic tensile load, so that elastic instability is facilitated. This situation is caused by the… More >

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702

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M.V.Hosur¹, M. M. Islam, S. Jeelani
The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.1, pp. 81-90, 2008, DOI:10.3970/icces.2008.006.081
Abstract In this paper, low-velocity impact response of braided composites is presented. Three types of braided fabrics were used. They were:$\pm$45, 0/$\pm$45, and 0/$\pm$60. Laminates with 7 layers of$\pm$45 and 4 layers of 0/$\pm$45, and 0/$\pm$60 were fabricated by vacuum assisted resin infusion molding process to get an average thickness ranging from 2.25 to 2.4 mm. Samples of size 10$\times$ 10 cm were then cut from the panels and impacted at 10, 20 and 30 J. Impact parameters like peak load and absorbed energy were calculated and normalized for thickness. All the samples were then subjected to ultrasonic c-scan testing to… More >

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