Sarah Ali

UNIVERSITY OF INFORMATION TECHNOLOGY & COMMUNICATIONS | UOITC · Engineering

Based on location, positioning systems are generally divided into two groups of indoor and outdoor environments. In the indoor type, the location of the device or the user is obtained within an indoor setting, in which technologies such as Bluetooth are used. The current availability of those indoor positioning systems (IPSs) that employ the Blueto...

An online examination system is a software solution that allows a company or a teaching institute to prepare and manage examinations across an online platform. This can be done through Internet, Intranet and/or LAN environments. The purpose of this paper is to create an online examination system application that utilizes network laboratories availa...

Virtual LANs (VLANs) offer a method of dividing one physical network into multiple broadcast domains. This paper simulates a VLAN using OPNET. Different scenarios are designed and simulated, where a step by step procedure using the workspace of OPNET is given. The first scenario network is tested for the cases when the network composed of (10 PCs &...

The purpose of this project is to explore some simple image enhancement algorithms. This project introduces spatial and frequency domain filters. Thus it involves creating masks, performing convolution, Fourier transforms and inverse Fourier transforms. An in-depth understanding of the Fourier transform is critical to the understanding of this proj...

Operators throughout the developed world are rolling out IP-based next generation networks (NGNs) with different application. The main objectives of this paper is to examine the performance of NGA network by integrating between both wireless technologies (WiMax IEEE 802.16 / WiFi IEEE 802.11g) and fixed line technologies (ADSL) architecture to supp...

The main objectives of this paper is to examine the performance of the wireless broadband infrastructures and their support for Triple Play services under different separated scenarios by using OPNET Modeler 14.5. This simulation network uses several features to study the performances of WiMax on Triple Play services, 3.5GHz band is chosen in our s...

Oxidative stress resulting from enhanced free radical formation or defect in anti-oxidant defence mechanism, implicates in the development of various disorders including impairment of vasodilatation, neuro degeneration, ventricular dysfunction and changes in cardiac muscle cells morphology. Oxidative stress activates renin aldosterone angiotensin s...