Volume 20, Issue 2, June 2013

Design of 6T SRAM Cell Using Independent Double-Gate FinFET in Subthreshold Region [Full Text]

Mr Ngangbam Phalguni Singh, Mr A.Ranjith and Mr R.Thandaiah Prabu

Abstract — Moore's law has enabled the scaling of CMOS technologies over the past several decades. However, the scaling of conventional transistors beyond 22nm is limited by various factors, such as power consumption and process variation effects. Increased transistor leakage and performance variation present challenges for scaling of conventional six-transistor (6-T) SRAM cells. It has been recently shown that advanced transistor structures such as FinFETs are more scalable and that FinFET-based 6-T SRAM cell designs offer improved static noise margin (SNM) with reduced variability, as compared with planar bulk-Si SRAM cells. 

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Video Compression Using Multiwavelet Critically Sampling Transformation [Full Text]

Laith Ali Abdul-Rahaim and Rau'm Saadon Mohammad

Abstract - Video Compression is a process of reducing the size file without degrading the video quality. This is achieved by reducing the redundancy between consecutive frames and within a single frame. Motion estimation is used to reduce temporal redundancy between frames by dividing the frame in to blocks and search for the best match according to the cost function. The proposed compression system uses the conventional red, green and blue color space representation and applies a two dimension discrete Multiwavelet Critically Sampling transform (DMWTCS) on the error residual signal before estimating the motion between frames. A value of threshold is assigned to the subband coefficients; a second of threshold is assigned to the second level detail subband coefficients. The second value is less than the first value. The resulting coefficients are quantized using a non-uniform quantizer and encoded using the EZW encoding algorithm. The system will be tested using two kinds of videos (simple, complex). The performance of the system will be tested by three main parameters; compression ratio (CR), Peak signal to noise ratio(PSNR) and processing time(PT). All graphics and codes are executed using MATLAB2008a. 

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Sustaining Potential of Information and Communication Innovation to Facebook Diversity [Full Text]

Abdullah Ali Alassiri, Mariah Binti Muda, Rahmat Bin Ghazali and Ubani Charles Ahamefula.

Abstract—The innovative communication features of social networking sites depicted a self-expressive media and communication artifacts that have increasingly become more ubiquitous as a cheaper communication medium that have promoted access to users in the remote locations globally. Facebook is popular and most widely used social network with communication features that changes consistently and allows users to modify the information and images posted on their wall. The ease with which information are manipulated to suite the intention of Facebook users has increased the risk associated with the disembodied online interaction. Moving beyond questions about the effects of social networking site consumption, this paper explores the innovative transformation aided by the information technology and communication infrastructure in empowering Facebook users with the communication features to meet the fast growing technology of communication requirements. Facebook is accessible wherever internet infrastructure is provided. To determine its present usefulness, this study reported its penetration depth and its usage pattern across the major region of the world. The innovative diversities of Facebook activities, its effects and limitations were reported as a step towards improving its communication features based on which online social networking services are facilitated. 

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Optimisation of Settling Time for PID Position Control in Mobile Satellite Dish [Full Text]

Network within Nigeria A. T. Ajiboye, T. S. Ibiyemi and J. A. Falade

Abstract— The Proportional-Integral-Derivative (PID) position controller parameters that yield optimum settling time for mobile satellite dish network within Nigeria when the central control office (CCO) was at Abuja were determined. For the determined value of proportional gain value, Kp, the system acceptable stability region was graphically determined in the integral gain value, Ki - derivative gain value, Kd plane. Using Linear Programming, values for Ki and Kd that yielded optimal settling time, ts were determined within the region of acceptable stability. The determined values of Kp , Ki, and Kd were used in compensating the system and the composite transfer function of the com- pensated system was subjected to a unit step forcing function to test the designed system for robustness by varying the time delay from min- imum to maximum values. The test was done using MATLAB as a simulation tool. The result analysis confirmed remarkable improvement in the settling-time of the system with optimal settling-time over the uncompensated system.