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The brain is amazingly complex, and the effects of a brain injury can vary widely. The injury can produce cognitive, sensory or physical impairments; most are amenable to rehabilitation. Some symptoms may appear right away, while others may not show up for days or weeks after the concussion. Disconjugate eye movements have been associated with traumatic brain injury since ancient times. Concussions...
Nowadays VANETs are becoming a dominating technology in automotive industries where vehicles communicate with each other to deliver safety messages or any type of information to other vehicles. However, the increasing numbers of vehicles on the roads poses a challenge on designing an efficient communication protocol for VANETs. The scalability issue in VANETs has a deteriorating effect on latency...
With the fast evolution and advancement of smart mobile phones and their ecosystems, their software applications availability grew at an exponential rate. Nowadays, mobile software applications are widely available as preloaded, embedded and online where they may be easily downloaded by users. One of the biggest challenges for mobile networks operators and mobile devices manufacturers is how to deal...
One of the main reasons for TCP's (Transport Control Protocol) degraded performance in 802.11 wireless networks is the TCP's interpretation that the packet loss is caused by network congestion. However, in wireless networks packet loss occurs mostly due to high bit error rate, packet corruption, and link failure. TCP performance in wired/wireless networks may be substantially improved if the causes...
Range estimation using RSSI (received signal strength indicator) for localization application for wireless sensor networks is a challenging task. Interference from the shared 2.4GHz channel and fading due to multipath propagation and shadowing deteriorate the process of range estimation. In this work an estimation of these noise levels that are present in the environment is being carried out by anchor...
Security frameworks for wireless sensor network localization application can no longer be ignored. Wireless sensor network are being deployed in sensitive environment that require high levels of confidentiality, integrity and authenticity. Employing already existing security algorithms dedicated for wireless networks are infeasible for sensor network environment due to limited resources. In this context,...
This paper proposes a novel relay selection protocol for distributed cooperative networks, that eliminates the effect of asynchronism between different received signals. The suggested protocol maintains a high diversity order, with minimum message complexity and overall time delay, and it also provides a better performance in terms of power consumption and error rates than existing selection protocols...
A scenario to design a Triple Mode FFT is addressed. Based on a Dual Mode FFT structure, we present a methodology to reach a triple mode FFT operator (TMFFT) able to operate over three different fields: complex number domain ℂ, Galois Fields GF(Ft) and GF(2m). We propose a reconfigurable Triple mode Multiplier that constitutes the core of the Butterfly-based FFT. A scalable and flexible unit for the...
In this paper, we investigate a cross layer design for routing in mobile ad hoc networks. The goal is to improve the performance of the existing Ad-hoc On Demand Distance Vector (AODV) routing protocol. The design allows the physical layer sharing the received signal strength (RSS), and the medium access control (MAC) layer sharing the remaining energy, as well as the remaining queue length information...
The popular linear PID controller is mostly effective for linear or nearly linear control problems. Nonlinear PID controllers, however, are needed in order to satisfactorily control (highly) nonlinear plants, time-varying plants, or plants with significant time delay. This paper extends our previous papers in which we show rigorously that some fuzzy controllers are actually nonlinear PI, PD, and PID...
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