Karachi, Pakistan

Time filter

Source Type

Musavi S.H.A.,Indus University | Bhatti J.,Sir Syed University of Engineering and Technology
2014 4th International Conference on Wireless Communications, Vehicular Technology, Information Theory and Aerospace and Electronic Systems, VITAE 2014 - Co-located with Global Wireless Summit | Year: 2014

Object Tracking based on Active Contour Modeling is an image processing based technology that uses snapshots of the object under consideration to track it via robot in the real world. The objective has been to implement a unique methodology that employs the pursuing and adapting of contour to the current state of image, and hence track the object. The system can be implemented in drone planes wherein this algorithm can be used to guide the movement of the gun based on the movements of the object, or, in robot games with a slightly more advanced robot. Initially Image Processing is performed to reduce operation complexity and achieve swift real-time performance. A set of contour-based modeling algorithms is then implemented to 'actively' track the subject. Also, relative transformation calculations are made to lock the target via robot, continuously. MATLAB is used to simulate and implement the system and it is tested on field with a ball placed on it and a robot tracking the ball. The experiments prove that the system successfully detects and tracks the object efficiently in the real world for all horizontal and vertical transitions. © 2014 IEEE.


Ahmed Z.,Indus University | Hamma S.,CNRS Research Institute of Communication and Cybernetics of Nantes
International Conference on Wireless Networks and Mobile Communications, WINCOM 2015 | Year: 2015

Two Level Scheduling Algorithm (TLSA) is a QoS-enabled fair and efficient connection admission control and packet scheduling algorithm for WiMAX networks. At the first level, an inter-class scheduling algorithm distributes bandwidth among various WiMAX service classes. Then at the second level, class specific algorithms distribute bandwidth among connections of the associated class. The present paper focuses on a Markov chain based analytical model of TLSA that is comprehensive enough to depict the behavior of inter-class and intra-class scheduling algorithms. Extensive simulations were performed and several criteria were considered to assess the accuracy of the proposed model. We considered bandwidth allocation in both inter-class and intra-class scheduling algorithms, percentage of lost packets and the service ratio. The experiments indicate that the analytical model faithfully captures the behavior of TLSA. © 2015 IEEE.


Jha A.,Indus University | Adlakha N.,Sardar Vallabhbhai National Institute of Technology, Surat
2013 Nirma University International Conference on Engineering, NUiCONE 2013 | Year: 2013

The study of calcium diffusion in neuron cells has gained interest among researchers during the last two decades, due to its wide variety of roles in human body like muscles contraction, secretion, metabolism, signal transduction etc. Most of the theoretical investigations on calcium diffusion in neurons have been carried out for one and two dimensional cases by various research workers and that too by incorporating a point source of influx. In order to have more realistic study a three dimensional model of calcium diffusion in a cylindrical shaped neuron cells has been developed in this paper. Apart from the point source, the line and surface sources of an influx of Ca2+ have been incorporated in the model. Appropriate boundary conditions have been framed. The region is discretized using three dimensional circular sectored elements. Variational finite element method has been employed to obtain the solution. The numerical results have been used to study effect of point source, line source and surface source of an influx on Ca2+ distribution in neuron cell. © 2013 IEEE.


Akhter S.,Jinnah Post Grad Medical Center | Warraich U.A.,Indus University | Rizvi N.,Jinnah Post Grad Medical Center | Idrees N.,Jinnah Post Grad Medical Center | Zaina F.,Jinnah Post Grad Medical Center
Tobacco Induced Diseases | Year: 2014

Background: Measuring eCo is rapid, non-invasive and inexpensive tool and correlate correctly with carboxyhemoglobin levels in blood. The aim of this study was to evaluate and compare the increase in end tidal carbon monoxide (eCO) levels in exhaled breath of passive smokers and healthy smokers after cigarette and shisha smoking.Findings: In a cross sectional study eCO levels were measured in 70 subjects (24 cigarette smokers, 20 shisha smoker, 26 passive smokers) by use of portable device. Smokers were asked to smoke shisha for 30 mins in shisha cafe or to smoke 5 cigarettes in 30 mins in a restaurant. eCo levels were measured at baseline (30 mins), 35 mins, 60 mins and 90 mins in all groups after entry to the venue. The baseline mean eCO level among cigarette smokers was 3.5 +/-0.6 ppm (part per million), passive cigarette smokers 3.7+/-1.0 ppm, shisha smokers 27.7+/-4.9 ppm and passive shisha smokers 18.3+/-8.4 ppm .The mean increase in eCO after 90 min among smokers was 9.4+/-4.6 (p < 0.005), passive cigarette smokers 3.5+/-2.5 (p <0.05), shisha smokers 57.9+/-27.4 (p <0.005) and passive shisha smokers 13.3+/-4.6 (p = 0.03).Conclusion: Exposure to shisha smoke is a cause of elevated eCO in smokers and passive smokers and due to in-door pollution, sitting in shisha bar causes significant increase in eCO levels. © 2014 Akhter et al.


Patel B.,MATS University | Kaurase K.P.,MATS University | Bisen A.M.,Indus University
Materials Science Forum | Year: 2015

Design of Turbo machinery is complex and efficiency is directly related to material performance, material selection is of prime importance. Temperature limitations are the most crucial limiting factors to gas turbine efficiencies. This paper presents the life of GTD 111 applied to gas turbine blade based on LCF and TMF test results. The LCF tests were conducted under various strain ranges based on gas turbine operating conditions. In addition, IP (in-phase) and OP (out of phase) TMF tests were conducted under various strain ranges. The paper will focus light on above issues and each plays an important role within the Gas Turbine Material literature and ultimately influences on planning and development practices. It is expected that this comprehensive contribution will be very beneficial to everyone involved or interested in Gas Turbines. © (2015) Trans Tech Publications, Switzerland.


Bhat S.,Canara Engineering College | Nagaraja H.N.,Indus University
2015 IEEE International Conference on Signal Processing, Informatics, Communication and Energy Systems, SPICES 2015 | Year: 2015

In conventional buck-boost converters, the output voltage is inverted. Hardware circuitry or microcontrollers are used to trigger a switch in the converter. In the proposed study, a non inverting buck-boost converter is implemented for PV system. The Pulse width modulation (PWM) signals for two MOSFETS in the converter are generated by DSP TMS 320 2808. Depending on the solar panel input, buck-boost converter charges the battery. The DC loads are driven from the battery. The load voltage and load current are sensed and compared with the reference voltage. Hardware circuitry or microcontroller is less accurate and using these systems the solar energy cannot be efficiently converted into electrical energy. In industry and commercial applications Digital Signal Processor (DSP) is used for automation. The same DSP can be used to generate PWM signals so as to get maximum electrical energy from solar energy. The DSP is more accurate and this works in real-time scenarios. The efficient utilization of resources such as DSP is achieved in the proposed study as the same DSP is used for generating PWM signal. In the proposed study, PWM signals are generated from DSP depending on load voltage and load current. The proposed work is better as compared to existing systems in terms of line and load regulation, efficiency, accuracy and speed as validated by experimental results. © 2015 IEEE.


Bhat S.,Canara Engineering College | Nagaraja H.N.,Indus University
2014 IEEE International Conference on Computational Intelligence and Computing Research, IEEE ICCIC 2014 | Year: 2014

In Photo-Voltaic (PV) systems to increase the conversion efficiency, efficient converters and efficient PWM switching circuits are required. To design efficient converters and PWM switching circuits mathematical models are necessary. In the proposed study, the mathematical model for photovoltaic cell and for buck-boost converter is developed. In the mathematical model, the parasitic elements of switch, inductor, diode and capacitance are considered. The mathematical model for PWM generator is also developed. The models are developed using volt-sec and ampere-sec equations. The mathematical models developed are validated by experimental results. © 2014 IEEE.


Soomro M.H.,Indus University | Musavi S.H.A.,Indus University | Pandey B.,Chitkara University
International Journal of Bio-Science and Bio-Technology | Year: 2016

In this research, a novel method based on Canonical Correlation Analysis (CCA) and Artificial Neural Network (ANN) to detect epileptic seizures from EEG signals is proposed. CCA was applied on EEG signals and feature vectors corresponding to Eigen values were extracted. These Eigen values were fed as input to Artificial Neural Network (ANN)‘s widely explored model Multilayer Perceptron Neural Networks (MLPNNs) for classification between occurrence of non-epileptic seizures and epileptic seizures. The extracted Eigen values using CCA proved to be a better epileptic seizures detector and provide average classification accuracy, sensitivity and specificity as 92.583%, 93.25% and 91% respectively. © 2016 SERSC.


Islam N.,Indus University | Shaikh Z.A.,National University of Computer and Emerging Sciences | Sheikh G.S.,Indus University
6th International Conference on Computing, Communications and Networking Technologies, ICCCNT 2015 | Year: 2015

Simulations are considered as the most convenient approach for validating any research proposal. A simulator attempts to model a real-world setting in order to analyze the behavior of any algorithm. A large number of simulation software for ad hoc network has been proposed in literature. These simulators are based on execution of simulation on standalone computers. This paper introduces the notion of 'simulation as a service' for mobile ad hoc network's simulation based on cloud computing. Cloud computing is an emerging discipline that enables outsourcing computing task remotely based on pay-as-you-go model. The paper provides a generalized architecture to perform ad hoc network simulations on cloud platforms. Similar to different service models provided by cloud, some service models have been introduced for cloud based simulation. The proposed approach provides different advantages such as dynamic service provisioning to support large scale simulation, sharing of simulation models and reduced cost for simulation etc. The proposed tool has been implemented on Heroku platform that demonstrates the scalability of proposed approach. © 2015 IEEE.


Ali M.G.,Indus University
IOP Conference Series: Materials Science and Engineering | Year: 2013

Calibration and testing of open surface water bath is a new technique and may be used for other liquid bath testing. Due to some critical circumstances the bath is not covered by the manufacturing company so is prone to the effects of surrounding environmental conditions. Due to this effect, bath temperature is not stable and calibration and testing cannot be performed under these conditions. For this type of calibration the reference instruments should measure temperature with very high levels of accuracy. A Platinum Resistance Thermometer (PRT), with super thermometer (indicator), is used for high accuracy calibration. Oil-filled flasks are used as a secondary medium to calibrate the bath and to reduce the evaporation, and instability in the temperature measurements. Therefore, on the basis of stable temperature with good precision and minimum uncertainty, the proposed method is found to be suitable for the calibration of open surface water baths. © Published under licence by IOP Publishing Ltd.

Loading Indus University collaborators
Loading Indus University collaborators