A fault tolerance routing protocol considering defined reliability and energy consumption in wireless sensor networks

Hamid Hassan Kashi; Amir Masoud Rahamni; Mehdi Hoseinzadeh; Vahid Sadatpour

Volume 1, Issue 1 , February 2015, Pages 1-8

  In wireless sensor networks, optimal consumptionof energy and having maximum life time are important factors. In this article attempt has been made to send the data packets with particular reliability from the beginning based on AODV protocol. In this way two new fields add to the routing packets and ...  Read More

A Fuzzy Realistic Mobility Model for Ad hoc Networks

Alireza Amirshahi; Mahmoud Fathy; Morteza Romoozi; Mohammad Assarian

Volume 1, Issue 1 , February 2015, Pages 9-18

  Realistic mobility models can demonstrate more precise evaluation results because their parameters are closer to the reality. In this paper a realistic Fuzzy Mobility Model has been proposed. This model has rules which are changeable depending on nodes and environmental conditions. It seems that this ...  Read More

A New RSTB Invariant Image Template Matching Based on Log-Spectrum and Modified ICA

Mehran Yazdi; Narjes Pourjafarian; Mehrnaz Fani; Elahe Taherianfard

Volume 1, Issue 1 , February 2015, Pages 19-28

  Template matching is a widely used technique in many of image processing and machine vision applications. In this paper we propose a new as well as a fast and reliable template matching algorithm which is invariant to Rotation, Scale, Translation and Brightness (RSTB) changes. For this purpose, we adopt ...  Read More

An Improved Semantic Schema Matching Approach

Zahra Sheikhnajdy; Mehran Mohsenzadeh; Mashalah Abbasi Dezfuli

Volume 1, Issue 1 , February 2015, Pages 29-36

  Schema matching is a critical step in many applications, such as data warehouse loading, Online Analytical Process (OLAP), Data mining, semantic web [2] and schema integration. This task is defined for finding the semantic correspondences between elements of two schemas. Recently, schema matching has ...  Read More

Two Novel Learning Algorithms for CMAC Neural Network Based on Changeable Learning Rate

Nazal Modhej; Mohammad Teshnehlab; Mashallah Abbasi Dezfouli

Volume 1, Issue 1 , February 2015, Pages 37-42

  Cerebellar Model Articulation Controller Neural Network is a computational model of cerebellum which acts as a lookup table. The advantages of CMAC are fast learning convergence, and capability of mapping nonlinear functions due to its local generalization of weight updating, single structure and easy ...  Read More

A New Shuffled Sub-swarm Particle Swarm Optimization Algorithm for Speech Enhancement

Masoud Geravanchizadeh; Sina Ghalami Osgouei

Volume 1, Issue 1 , February 2015, Pages 43-50

  In this paper, we propose a novel algorithm to enhance the noisy speech in the framework of dual-channel speech enhancement. The new method is a hybrid optimization algorithm, which employs the  combination of  the  conventional θ-PSO and the shuffled sub-swarms particle optimization ...  Read More

Improving Quality of Service Routing in Mobile Ad Hoc Networks Using OLSR

Forouz Ghaffarizadeh; Ahmad Khademzadeh

Volume 1, Issue 1 , February 2015, Pages 51-58

  Mobile ad hoc networks (MANET) are constructed by mobile nodes without access point. Since MANET has certain constraints, including power shortages, an unstable wireless environment and node mobility, more power-efficient and reliable routing protocols are needed. The OLSR protocol is an optimization ...  Read More

A Differentiated Pricing Framework for Improving the Performance of the Elastic Traffics in Data Networks

Pejman Goudarzi

Volume 1, Issue 1 , February 2015, Pages 59-64

  Rate allocation has become a demanding task in data networks as diversity in users and traffics proliferate. Most commonly used algorithm in end hosts is TCP. This is a loss based scheme therefore it exhibits oscillatory behavior which reduces network performance. Moreover, since the price for all sessions ...  Read More