electrical engineering and electronics
Khwarizmi Science Society is going to participate in the 9th Buraq camp which is going to be held from 19th of December to 31st of December 2012. KSS will be joining on 24th of December and will be delivering four lectures on different topics, which include:
- The Strange, Strange World of Quantum Physics and Quantum Computing.
- A Gentle Introduction to Solar Thermal Energies.
- Earthquakes: The true story.
- Cosmology and Us.
This talk highlights the inventing process – the preparation involved and the small steps to the greater achievements. From his early days as a school boy in Karachi and Lahore to the foundational technology training sites in Chicago, Pasadena, and Schenectady-New York, relayed is a personal journey as an inventor for solving pressing problems in international level engineering and in higher education for Pakistan.
Mr. Zaidi will be talking about the basics of System On Chip(SOC), Embedded Systems Technology and its Applications. Later he would talk about his company namely PalmChip, USA and finally the prospects of Pakistani youth in this emerging field.
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.
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.
Electronic devices have seen tremendous improvement since the discovery of electron. A brief history of the progress in microelectronics industry will be presented with emphasis on memory devices and information technology (IT). The limiting factors in the future progress will be discussed, and need for new concepts and devices will be established. Results of memories and logic circuits based on silicon nano-wires as single electron tunneling transistors (SETTs) will also be presented. Microelectronics research at Cavendish laboratory has resulted in a new device named PLEDM. Results are presented with the courtesy of Prof. H. Ahmed. This is shown to be a replacement of DRAM, which is currently the single largest selling electronic component. A new dimension of future microelectronics research will also be discussed.