Discrete cosine transform (DCT) plays an important role in video coding. Integer DCTs which approximate the standard DCT– II have been developed for various sizes i.e., N = 4, 8, 16, etc. In this paper, a review of various integer DCTs used in H.264, AVSchina and VC-1 is provided. For a first order Markov process, with high adjacent correlation coefficient, ρ = 0.95 and N=8 properties like tran...

This paper describes Computer Aided Learning (CAL) methodologies incorporated in teaching at the Electrical and Computer Engineering Program of Texas A&M University at Qatar (TAMUQ). A set of virtual experiments and instruments are in use by the Electrical and Computer Engineering Program exposing students to latest CAL technologies and encourages the study and implementation of computer learni...

PUBLISHED BY THE IEEE COMPUTER SOCIETY ■ 1540-7993/03/$17.00 © 2003 IEEE ■ IEEE SECURITY & PRIVACY 17 A fundamental goal of information security is to design computer systems that prevent the unauthorized disclosure of confidential information. There are many ways to assure this information privacy. One of the oldest and most common techniques is physical isolation: keeping confidential data on...

We present the characterization of short-range ordered hexagonal arrays of subwavelength holes in thin gold films. The hole arrays are fabricated by a low-cost technique using convectively self-assembled polystyrene beads as an initial pattern template. Our results suggest that corrugated, short-range ordered hole arrays allow the excitation of resonant surface plasmons. This opens the door to ...

It has been recently shown that the polarization of the source exciting a guided wave via near-field coupling plays a key role in determining the propagation direction of the guided way. This way, point dipoles exhibiting circularly polarization are converted into guided waves so that opposite excitation spins result in counter-propagating guided waves. This powerful concept, firstly demonstrat...

A Comparison of THz power radiated from dc biased SWCNT, Graphene and Palladium thin films is performed. By controlling the bandwidth using an edge-fed or center-fed antenna, we aim to indirectly probe the radiation mechanism by measuring the total radiated power. The main goal is to compare the measured power with a standard Nyquist thermal noise model.

Vol. 10 No. 1 1998 The template facility within the C++ language allows the user to provide a template for a class or function and then apply specific arguments to the template to specify a type or function. The process of applying arguments to a template, referred to as template instantiation, causes specific code to be generated to implement the functions and static data members of the instan...

This paper represents a template matching using statistical model and parametric template for multi-template. This algorithm consists of two phases: training and matching phases. In the training phase, the statistical model created by principal component analysis method (PCA) can be used to synthesize multi-template. The advantage of PCA is to reduce the variances of multi-template. In the matc...

We demonstrate a novel laser design for room temperature THz emission from a quantum cascade laser. The device concept is based on THz emission by difference-frequency generation in mid-infrared quantum cascade lasers with giant nonlinear properties. In contrast to previously demonstrated lasers the presented design significantly simplifies and improves the active medium of the quantum cascade ...

The recent development of light irradiation systems has facilitated the emergence of new therapies based on light-sensitive drugs. However, photosensitizers have a tendency to self-associate in physiologic environment, leading to a loss of their physical properties. Hence, nanometric formulations have been assessed, because this limits self-association and enables accumulation in solid tumors o...