seminar

Quantum Computing

Myth or Reality?
Registration: 
Open to all.
Date: 
15 July 2008
Time: 
11:00 am
Venue: 
University of Management and Technology, 2S 43 South Block UMT, C-II Johar Town, Lahore
Abstract: 

Quantum computers have occupied the imagination, time, energy and resources of many researchers worldwide. About ten years after the first prototypes became implementable in labs worldwide, are we still too far removed from a practical, useful realization? This talk will cover the basics of what quantum computers are, what they (or might) look like and why is there so much hype about them. This will be an elementary introduction aimed at the college-level science students.

Resource People: 
Speaker
Dr. Sabieh Anwar
LUMS School of Science and Engineering, Lahore University of Management Sciences, Lahore

The Shape of Space

M-Branes and 11-Dimensional Geometry
Registration: 
Open to all.
Date: 
27 November 2007
Time: 
11:00 am
Venue: 
Department of Physics, University of the Punjab, Lahore
Abstract: 

General Relativity tells us that all massive objects deform the backgrounds into which they are placed so that the very shape of space is changed by their presence. If, in addition, these objects happen to be charged, they give rise to a flux which distorts the background still further. In the talk, we will apply these simple ideas to gather information about the elusive 11-dimensional M-theory which gives rise to string theory. We will try to categorize some of the geometries that are allowed in M-Theory by studying what happens to a background when stable hyper-dimensional objects called BPS M-branes are brought into it.

Resource People: 
Speaker
Prof. Dr. Tasneem Zehra Husain
LUMS School of Science and Engineering, Lahore University of Management Sciences, Lahore

Impact of burst aggregation time on optical switching networks

Registration: 
Registration is required.
Date: 
1 December, 2003
Time: 
11:00 am
Venue: 
M-1, Old Electrical Engineering Department, University of Engineering and Technology, Lahore
Resource People: 
Speaker
Dr. Sireen Malik
Hamburg University, Germany

Activity Discovery and Anomolous Activity Explanation in Dynamic Ubiquitous Environments

Registration: 
Open to all.
Date: 
27 October, 2003
Time: 
11:00 am
Venue: 
M.Sc. Seminar Room, Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Resource People: 
Presenter
Raffay Hamid
Georgia Insititute of Technology, USA

Numerical Simulations of RF Induced Heating in MRI

Registration: 
Open to all.
Date: 
26 April, 2003
Time: 
11:00 am
Venue: 
M.Sc. Seminar Room, University of Engineering and Technology (UET), Lahore
Abstract: 

MRI (Magnetic Resonance Imaging) is a very useful medical procedure to get high quality images inside the body. Felix Bloch and Edward Purcell discovered the magnetic resonance phenomenon independently in 1946. They were awarded the Nobel Prize in 1952. The use of MRI is increasing every day and has become a very useful tool for diagnosis. However, patients with artificial implants, e.g. heart pace makers, DBS (Deep Brain Stimulation) systems, which are used for Parkinson's disease, IPG (Implantable Pulse Generator), used for generating pulses for DBS, are in severe danger for MRI testing. The problems for such patients going under MRI are that the generation of the induced eddy currents inside the metallic implants that causes heating. This heating, if goes above a certain level, can cause brain damage and can even result in death. We are doing numerical computations using FDTD (Finite Difference Time Domain) to estimate the heating produced inside the body using the human data set.

Resource People: 
Speaker
Arsalan Amjad
School of Electrical and Computer Engineering, Purdue University, USA

Transport Phoneomena at the Nanoscale

Registration: 
Open to all.
Date: 
9 April, 2003
Time: 
11:00 am
Venue: 
Institute of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, Lahore
Abstract: 

The development of Nanotechnology has enabled the possibilities to fabricate devices and structures at nanoscale (on the order of few nm). The properties of such nanostructures cannot be described by macroscopic physical models like drift-diffusion equations. And that is where the fundamental constants of nature (e.g. charge of an electron, Planck's constant, spin of an electron, etc) come into play. The purpose of this seminar is to describe how these fundamental constants can be connected with the transport phenomenon at nanoscale and how we can come up with a formalism that can describe the transport phenomenon in these nanostructures in terms of the atomistic theory of matter. We will start with a simple one level model to describe transport through individual molecular levels and then extend our discussion to transport through quantum wires using Nonequilibirum Green's Function (NEGF) methodology. Then we will discuss how to include interactions in our formalism which will connect this formalism to Ohm's Law.

Resource People: 
Speaker
Hassan Raza
School of Electrical & Computer Engineering, Purdue University, USA

Smart Antenna Applications for Code Division Multiple Access Wireless Systems

Registration: 
Open to all.
Date: 
19 December, 2002
Time: 
11:00 am
Venue: 
M.Sc. Seminar Room, Electrical Engineering Department, University of Engineering and Technology (UET), Lahore
Abstract: 

Wireless communications for mobile telephone and data transmission is currently undergoing very rapid development. The emerging wireless systems will incorporate considerable signal processing intelligence in order to provide advanced services such as multimedia transmission. In order to make optimum use of available bandwidth, many wireless systems operate as multiple access systems, e.g. Direct Sequence Code Division Multiple Access (DS-CDMA), in which the users are multiplexed by distinct code waveforms. Two major factors that limit the performance of DS-CDMA systems are multiple access interference and multipath channel distortion. Many advanced signal processing techniques have been proposed to combat these factors. Among these techniques, one of the more promising is the use of Smart or Adaptive antennas. This seminar provides an introduction to Smart Antennas for cellular systems. It looks at the various factors affecting propagation in a wireless channel environment and reviews the different approaches towards implementation of adaptive beamforming algorithms for CDMA systems. Finally it reports on the simulation strategy adopted to evaluate the performance of smart antenna systems for CDMA.

Resource People: 
Speaker
Salman Durrani
School of Information Technology, University of Queensland, Brisbane, Australia

Chaos

Dedicated Page: 
Introduction to Chaos
Registration: 
Open to all.
Date: 
19 August, 2002
Time: 
11:00 am
Venue: 
COMSATS Institute of Information Technology, Lahore
Resource People: 
Speaker
Dr Tariq Abdullah
Centre for Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore

Computer Models for the Differential Control of Gene Expression

Registration: 
Open to all.
Date: 
18 May, 2002
Time: 
11:00 am
Venue: 
of Biochemistry and Biotechnology, University of the Punjab, Quaid-e-Azam Campus, Lahore
Abstract: 

We have developed computer models for the control of the activation of the calcium dependent transcription factors. Upon stimulation by foreign proteins, T-lymphocytes display spontaneous oscillation in calcium cellular concentration. Depending on the frequency of these oscillations, either one or more transcription factors are activated. The active transcription factors translocate to the nucleus and initiate gene expression. The model suggests a mechanism by which this differential gene expression occurs. This model faithfully reproduces a wide variety of experimental data. It also suggests key control points for these biochemical signalling pathways, which might suggest novel targets for immunosepressant drugs.

Resource People: 
Speaker
Prof. Dr. Saleet Jafri
School of Computational Sciences, George Mason University, USA
Chair
Dr. Waheed Akhtar
Director, Institute of Biochemistry and Biotechnology, University of the Punjab

Optical Communications and Wavelength Division Multiplexing

Registration: 
Open to all.
Date: 
4 December, 2001
Time: 
11:00 am
Resource People: 
Speaker
Khurarm Shahzad Chaudhary
Electrical Engineering Department, University of Engineering and Technology (UET), Lahore