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In this paper, we propose the use of the smart environment based on Internet of Things (IoT), P2P technology and Heuristic Diagnostic Teaching (HDT) principles for identifying learning abilities in mathematics and creative traits for students that are diagnosed within Autism Spectrum disorder (ASD). Our new system is combined with various visual systems, such as objects, photographs, pictures, realistic...
In this paper, we implement and evaluate the performance of a new system based on Internet of Things (IoT) and P2P technology for supporting learning and improving the quality of life for children with Autism Spectrum Disorder (ASD). Many children with autism are highly interested and motivated by smart devices such as computers and touch screen tablets. These types of assistive technology devices...
The scope of this paper is the implementation of a positioning algorithm using the approach of post-processing the measurements taken from a real GPS receiver, in order to assess user's position and performance of the algorithm. Recently, there is an increase interest in positioning techniques based on Global Navigation Satellite Systems so we focus on the performance evaluation of a positioning algorithm...
The 3G mobile services are usually accomplished by implementation of multiband antennas at 900 MHz, 1800MHz and 2100MHz. Multiband antennas enable simultaneous services at these three frequency bands, and consequently the higher emitted power density. Within the vicinity of these antennas it is of interest the non ionizing radiation level to be measured for each frequency, then for three frequencies...
MANETs are attracting attention for their potential use in several fields such as collaborative computing and multimedia communications. MANET nodes cooperate in an autonomous way by forwarding packets to each-other. Considering mobility of the terminals, routes change dynamically so routing algorithms are very important for operation of MANETs. These protocols and other algorithms are tested by simulations,...
Online web-based application that heavily require user interaction, either among users or among users and the application, generate huge amounts of data. Recording such user interaction data, usually in the form of log data files, could be very useful for different purposes such as user modelling, user activity analysis, data analytics, security, monitoring, etc. However, such data is not ready to...
Images of outdoor scenes captured in bad weather suffer from poor contrast. Under bad weather conditions, the light reaching a camera is severely scattered by the atmosphere. The resulting decay in contrast varies across the scene and is exponential in the depths of scene points. Since traditional space invariant image processing techniques are not sufficient to remove weather effects from images,...
In this paper, we deal with congestion control for multi-flow traffic in wireless mobile ad-hoc networks (MANET). For simulations, we used ns-3 open source network simulator considering Optimized Link State Routing (OLSR) routing protocol. We present the MANET performance considering random waypoint mobility model for different number of nodes and different area sizes, by sending multi-flow traffic...
Efficient scheduling of jobs to resources is a core service of Computational Grids (CGs). Due to the large scale, the dynamic nature and the highly heterogeneous tasks and resources, scheduling is a challenging problem in CGs. Different methods, from simple heuristics to more sophisticated optimization and artificial intelligence techniques, have been for a while now in the research and development...
Computing efficiently a planning of incoming jobs to available machines in the Grid system is a main requirement for optimized system performance. One version of the problem is that of independent batch scheduling in which jobs are assumed independent and are scheduled in batches aiming to minimize the make span and flow time. Given the hardness of the problem, heuristics are used to find high quality...
Recently, Mobile Ad-hoc Networks (MANETs) have become very attractive for their usage in time-critical applications and indoor environments. In this paper, we evaluate our indoor stairs MANET test bed in terms of throughput and delay. We analyze the behavior of Optimized Link State Routing (OLSR) and Better Approach To Mobile Ad-hoc Network (BATMAN). We design and implement two experimental scenarios...
A Mobile Ad-hoc Network (MANET) is a collection of wireless mobile terminals that are able to dynamically form a temporary network without any aid from fixed infrastructure or centralized administration. In recent years, they are continuing to attract the attention for their potential use in several fields. Mobility and the absence of any fixed infrastructure make MANETs very attractive for mobility...
A Mobile Ad hoc Network (MANET) is a collection of wireless mobile terminals that are able to dynamically form a temporary network without any aid from fixed infrastructure or centralized administration. In recent years, MANETs are continuing to attract the attention for their potential use in several fields such as military activities, rescue operations and time-critical applications. A very important...
Online Learning and Virtual Campuses have become commonplace paradigms for distance teaching and learning. Unlike face to face teaching and learning methods in which teachers and managers can take decisions based on information from everyday classroom activities, decision making in online learning becomes more complex due to the online setting. Teachers need to get information from the online learning...
This work is motivated by the need to develop decentralized P2P approaches for controlling end-devices in a wide-area network without changing the network security policy. Much of current research work on P2P systems is devoted to P2P networks of standard peers such as PCs. Due to improvements of connections capabilities of mobile devices and end-devices, there is an increasing interest to design,...
Data mining algorithms have been proved to be useful for the processing of large data sets in order to extract relevant information and knowledge. Such algorithms are also important for analyzing data collected from the users' activity users. One family of such data analysis is that of mining of log files of online applications that register the actions of online users during long periods of time...
In recent years, MANETs are continuing to attract the attention for their potential use in several fields such as military activities, rescue operations and time-critical applications. In this paper, we present the implementation and analysis of our implemented MANET testbed considering AODV and OLSR protocols for wireless multi-hop networking. We investigate the effect of mobility and topology changing...
In VANETs and MANETs, the topology of the network changes very often, therefore implementation of efficient routing protocols is very important problem. In MANETs, the Random Waypoint (RW) model is used as a simulation model for generating node mobility pattern. On the other hand, in VANETs, the mobility patterns of nodes is restricted along the roads, and is affected by the movement of neighbour...
Mesh router nodes placement is a central problem to Wireless Mesh Networks (WMNs). An efficient placement of mesh router nodes is indispensable for achieving network performance in terms of both network connectivity and user coverage. Unfortunately the problem is computationally hard to solve to optimality even for small deployment areas and a small number of mesh router nodes. As WMNs are becoming...
Estimation of peak power density in the vicinity of cellular base stations and comparison of theoretical values with exposure limits for public, offers the possibility of knowing the safety distance from those antennas. In this paper, we present results of estimations for the peak power density radiated from antennas, by eliminating or not considering reflected waves from different surfaces. This...
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