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4D-PET reconstruction has the potential to significantly increase the signal-to-noise ratio in dynamic PET by fitting smooth temporal functions during the reconstruction. However, the optimal choice of temporal function remains an open question. A 4D-PET reconstruction algorithm using adaptive-knot cubic B-splines is proposed. Using realistic Monte-Carlo simulated data from a digital patient phantom...
In this paper, we present a novel mathematical model for lossless video compression using Cartesian co-ordinate system. The model is based on our novel approach of explanation to the working principle of Median Edge Detector(MED). Median Edge Detector predicts value of the unknown pixel, xt, using previously encountered three pixel values . This is done using following prediction model.
This paper investigates the various effects that affect the ID-VDS characteristics in a strained-Si over SiGe NMOSFETs. The modeling is done keeping the BSIM4 parameters as the reference. The model thus developed showed precise agreement with the experimental data. It is observed that mobility in strained silicon increases and thereby enhancing current. Bandgap is affected to a lesser extent, but...
The thermal diffusion behavior of ion-implanted Arsenic (As) in SiGe alloy has been investigated and modeled. This paper introduces an empirical model consisting of physics-based and process parameters for evaluating the effective diffusivity of Arsenic through SiGe accurately. The process parameters that were found to dominate the enhancement in arsenic diffusion were the Germanium content, diffusion...
Demands for low power electronics have motivated designers to explore new approaches to VLSI circuits. The classical approaches of reducing energy dissipation in conventional CMOS circuits include reducing the supply voltages, node capacitances, and switching frequencies. Energy-recovery circuitry, on the other hand, is a new promising approach to the design of VLSI circuits with very low energy dissipation...
It is well known fact that organizations diversifies and increase their product line locally and globally. In developing new products, project managers prefer to undertake related projects. As the projects are interdependent and inter related, there is a risk related interdependency. Information Systems(I.S) project selection decision is influenced by a number of factors like long-term plans, profit...
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