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Frequency: 12 issues per year
ISSN: 2250–3005 (online version)
Published by: IJCER
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International Journal of Computational Engineering Research

(IJCER)

 

Articles

 

Research Article  open access
Constraint Aware Dynamic Web Service Composition for A Specific Business Requirement
Raghu Rajalingam, Shanthi
India
Paper Indexed : :03.3005/xxxxxx
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 01 (January 2015)

Abstract

In today's fast moving technology world everyone wants a better and quality of IT services they consume. Here the IT services are referred to web services. In recent time development IT solutions is reduced and most of the time spent on integrating the existing IT solutions. In this space web services has dominating the software industry. Every one focusing converting the existing solution to some form web services and offering the services to customer. The existing technology of web services are extended to completely customize the way services are composed as per the customer requirement so that it will add or provide value as well as the maximum benefit to the customer. Dynamically composing the web services based on the user constraint and providing services to customer always challenging. The proposed paper focus on to addressing how to compose web services based on the user constraint dynamically. The proposal is win-win for both service provider as well as the service consumer.

Keywords:Service oriented computing; composition of services; dynamic composition; UDDI registry; web services.

 

Research Article  open access
C0 Mixed Layerwise Quadrilateral Plate Element with Variable in and Out-Of-Plane Kinematics and Fixed D.O.F.
Icardi U., Sola F.
Italy
Paper Indexed : : 03.3005/xxxxxx
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 01 (January 2015)

Abstract

A quadrilateral, eight-node, mixed plate element based upon a recent 3D, variable kinematics zig-zag plate model by the authors is developed. Representation can be refined across the thickness though the number of unknown does not depend on the number of constituent layers, the nodal variables being fixed. The out-of-plane stress continuity is a priori satisfied at the interfaces and the material properties are allowed to step-vary moving over the plane of the structure. In order to obtain a C0 model, all derivatives of unknowns are converted with a technique that does not introduce additional d.o.f. Equilibrium equations are satisfied just in approximate integral form, mid-plane displacements and interlaminar stresses, the nodal d.o.f., being interpolated using the same standard serendipity shape functions. As shown by numerical results, this does not result in any precision loss. Accuracy, solvability and convergence are assessed considering multi-layered monolithic and sandwich-like structures with different boundary conditions and abruptly changing material properties across the thickness, for which exact solutions are available. Also a bonded joint is studied, which is treated as a laminate with spatially variable properties. In all these cases, the element is shown to be fast convergent and free from spurious, oscillating results.

Keywords:partial hybrid formulation; intra-element equilibrium in an approximate integral form; fixed d.o.f.; hierarchic representation; C0 plate element;

Research Article  open access
Random Key Pre-distribution Schemes using Multi-Path in Wireless Sensor Networks
Si-Gwan Kim
Korea
Paper Indexed : : 03.3005/xxxxxx
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 01 (January 2015)

Abstract

Low-cost, small-size and low-power sensors that incorporate sensing, signal processing and wireless communication capabilities is becoming popular for the wireless sensor networks. Due to the limited resources and energy constraints, complex security algorithms applied to ad-hoc networks cannot be employed in sensor networks. In this paper, we propose a node-disjoint multi-path hexagon-based routing algorithm with a key pre-distribution scheme in wireless sensor networks. We describe the details of the algorithm and compare it with other works. Simulation results show that the proposed scheme achieves better performance in terms of security, efficiency and message delivery ratio.

Keywords:key pre-distribution, multi-path, routing, security, wireless sensor networks

Research Article  open access
Development of Seakeeping Test and Data Processing System
Fei Yu-Ting, HouGuo-Xiang, Wang Kai, Zhang Yao
China
Paper Indexed : : 03.3005/xxxxxx
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 01 (January 2015)

Abstract

A seakeeping test and data processing system is developed for towing tanks. This system includes two main procedures: wave-generating and data processing. In the wave-generating procedure, the linear filtering method is used to generate irregular waveswith the full consideration of the actual efficiency of the machine and the compensation for the actual stroke of piston. Furthermore, groups of piston motion data meeting the requirements of target spectrum are afforded. To ensure the normal operation of a wave machine, the above data within the range of the rated strokes of piston should be chosen. In the data processing procedure, the correlation function method is used to handle the time domain signals which contain irregular waves, ship swaying motion, hull stress and so on. Then the spectrum curve of these test data can be drawn and some statistical values can be obtained based on the narrow-band spectrum theory. According to these statistical values, the frequency response function can be derived, and the predicted value of ship motion in irregular waves can be calculated. By comparing the predicted and experimental results, the reliability of this system can be evaluated. On the basis of the movement of a boat in irregular waves and a series of dynamic responding experiments, this paper proves that thedeveloped system has many advantages, such as succinctness, completeness, accurate data process, reliability, accurate simulation from actual spectrum to target spectrum and so on.

Keywords:Wave generator; irregular wave; seakeeping test; software

Research Article  open access
Emotion Recognition based on audio signal using GFCC Extraction and BPNN Classification
Shaveta Sharma, Parminder Singh
India
Paper Indexed : : 03.3005/xxxxxx
International Journal of Computational Engineering Resaerch 2014, Volume 05 ~ Issue 01 (January 2015)

Abstract

For automatic speech recognition (ASR) there is a big challenge which deals with momentous presentation reduction in high noisy environments. This paper presents our emotion classification based on Gammatone frequency cepstrum coefficient used for feature extraction along with Back propagation neural network and the experimental results on English speech data. Eventually, we obtained significant presentation gains with the new feature in various noise conditions when compared with traditional approaches. In our proposed work we considered two emotions SAD and HAPPY which are used to show the implementation results. The simulation environment taken to implement the whole process is in MATLAB

Keywords:Back propagation neural network, GFCC, audio signals, filter banks