Abadalsalam T. Hussain

Performance analysis of scheduling policies for VoIP traffic in LTE-Advanced network

Resource allocation mechanisms are important in assigning all available resources in the network. Scheduling is one of the resource allocation mechanism which will determine the performance of the network. This paper provides the performance analysis on three different scheduling algorithms in the Long Term Evolution-Advanced downlink transmission system with realistic channel model for urban macro cell scenario. All scheduling algorithms are evaluated based on throughput, frame delay, packet delay variation and mean opinion score index of voice over internet protocol via simulation executed on OMNET++ based simulator. The maximum of carrier to interference ratio scheme provided the highest value of throughput and mean opinion score index among all schemes in the evaluated network. The scheme also provided the lowest value of frame delay and packet delay variation in the evaluated network scenario.

Real-time robot-human interaction by tracking hand movement & orientation based on morphology

In this paper we present a method that allows real time tracking on a hand in 3D space and notes its orientation and position accordingly, with the goal of ultimately tying it to a robotic spherical wrist as well as the wrists 3D position. Several image processing techniques were used in conjunction with mathematical morphological filters formulae in order to understand the hands position and orientation. The proposed methods have showed great success in identifying the Nonlinear systems, variable 3D levels of hand movements and rotations correctly, which could be applied in different types of robotic manipulators, computer simulations or a number of human-computer remote handling interactions. Real time took place in system response.

Tracking and replication of hand movements by teleguided intelligent manipulator robot

In this paper, a new method is presented that allows an intelligent manipulator robotic system to track a human hand from far distance in 3D space and estimate its orientation and position in real time with the goal of ultimately using the algorithm with a robotic spherical wrist system. In this proposed algorithm, several image processing and morphology techniques are used in conjunction with various mathematical formulas to calculate the hand position and orientation. The proposed technique was tested on Remote teleguided virtual Robotic system. Experimental results show that proposed method is a robust technique in terms of the required processing time of estimation of orientation and position of hand.

Internal air flow analysis of a bladeless micro aerial vehicle hemisphere body using computational fluid dynamic

This paper explain the analysis of internal air flow velocity of a bladeless vertical takeoff and landing (VTOL) Micro Aerial Vehicle (MAV) hemisphere body. In mechanical design, before produce a prototype model, several analyses should be done to ensure the products effectiveness and efficiency. There are two types of analysis method can be done in mechanical design; mathematical modeling and computational fluid dynamic. In this analysis, I used computational fluid dynamic (CFD) by using SolidWorks Flow Simulation software. The idea came through to overcome the problem of ordinary quadrotor UAV which has larger size due to using four rotors and the propellers are exposed to environment. The bladeless MAV body is designed to protect all electronic parts, which means it can be used in rainy condition. It also has been made to increase the thrust produced by the ducted propeller compare to exposed propeller. From the analysis result, the air flow velocity at the ducted area increased to twice the inlet air...

The Performance of a Heat Exchanger Designed for Cooling Electric Vehicle Car Battery System by Use Base Fluid and Nano-Fluid

This study examines the design of heat exchanger made of copper tube for cooling electric vehicle car battery system and the effects of base fluid and nanofluid (as coolants) channeling inside the heat exchanger to increase heat transfer between the compartment of the electric vehicle car and the heat exchanger and comparison between them. The nanofluid (CuO/pure water) was prepared by dispersing a nanoparticle (CuO) in base fluid (pure water). nanofluid (CuO/pure water) with a nominal diameter of 50 nm at volume concentrations (0.27 Vol. %) at batteries’ compartment temperature was used for these investigations. The analysis showed that secondary cooling system by means of nanofluid (CuO/pure water) has advantages in improving the thermal conductivity and heat transfer coefficient, better from base fluid (pure water) also in Nusselt number. This results work on reducing the electric power loss in the form of thermal energy from batteries. This led to increase in the efficiency of the electric vehicle car battery, hence also improved the performance of the EV car and battery lifetime.

Study on Dielectric and Magnetic Properties of MWCNTs/Polyester Composites

This paper is to study the dielectric properties, magnetic properties, and dielectric conductivity of Multi-walled carbon nanotubes (MWCNTs) and polyester (PE) composites. The composites with different amount of MWCNTs (5-15%) have been studied in the Ku-Band range (12.4-18 GHz). The rectangular waveguide (WR-62) was used to measure the dielectric properties and magnetic properties of the samples. The results show the dielectric properties and conductivity of MWCNTs/PE composites is increasing with the MWCNTs filler increases. The real part of dielectric properties values increase from 5.5 to 26.6 with increasing the MWCNTs loading from 5 % to 15 %. The increasing of MWCNTs filler in the MWCNTs/PE composites does not effects on magnetic properties, the real part and imaginary part of magnetic properties are approximate to 1 and 0. The highest conductivity of 15 % MWCNTs loading is reach to 11.02 (S/m) at 18 GHz. Keywords: composites, dielectric properties, magnetic properties, conductivity

A novel approach in ENERGY CONSERVATION SYSTEM “Energy conservation & monitoring control system design”

This paper describes an ENERGY CONSERVATION & MONITORING SYSTEM, designed to avoid usage of extra energy consumption and monitor the usage of energy. Energy crises have caused economic halts to many countries, causing hindrance in development of developing nations. This project is a small effort to solve this problem. The testing and demonstration of this project was conducted in Faculty of Engineering Sciences and Technology, Hamdard University, Karachi, Pakistan. In first stage of the project, load calculation was done in which load of whole campus was determined. After that, implementation of this project was done in defined area. In which motion sensors were used to detect the presence of body in a certain range. The appliances were controlled by motion sensor in that area and this was logged in software connected with computer through serial port. The simulation results show that after implementation of this project around 20- 30 % energy was saved.