802 research outputs found
A secure email login system using virtual password
In today's world password compromise by some adversaries is common for
different purpose. In ICC 2008 Lei et al. proposed a new user authentication
system based on the virtual password system. In virtual password system they
have used linear randomized function to be secure against identity theft
attacks, phishing attacks, keylogging attack and shoulder surfing system. In
ICC 2010 Li's given a security attack on the Lei's work. This paper gives
modification on Lei's work to prevent the Li's attack with reducing the server
overhead. This paper also discussed the problems with current password recovery
system and gives the better approach
Signal strength determines the nature of the relationship between perception and working memory
Neurophysiological and behavioral studies have shown that perception and memory share neural substrates and functional properties. But are perception and the active working memory of a stimulus one and the same? To address this question in the spatial domain, we compared the percept and the working memory of the position of a target stimulus embedded within a surround of moving dots. Motion in a particular direction after the target's offset biased the memory of target location in the same direction. However, motion simultaneous with a high-contrast, perceptually strong target biased the percept of target location in the opposite direction. Thus, perception and working memory can be modified by motion in qualitatively different ways. Manipulations to strengthen the memory trace had no effect on the direction of the memory bias, indicating that memory signal strength can never equal that of the percept of a strong stimulus. However, the percept of a weak stimulus was biased in the direction of motion. Thus, although perception and working memory are not inherently different, they can differ behaviorally depending on the strength of the perceptual signal. Understanding how a changing surround biases neural representations in general, and postsensory processes in particular, can help one understand past reports of spatial mislocalization
Single Heavy Flavour Baryons using Coulomb plus Power law interquark Potential
Properties of single heavy flavor baryons in a non relativistic potential
model with colour coulomb plus power law confinement potential have been
studied. The ground state masses of single heavy baryons and the mass
difference between the ( and ) states are
computed using a spin dependent two body potential. Using the spin-flavour
structure of the constituting quarks and by defining an effective confined mass
of the constituent quarks within the baryons, the magnetic moments are
computed. The masses and magnetic moments of the single heavy baryons are found
to be in accordance with the existing experimental values and with other
theoretical predictions. It is found that an additional attractive interaction
of the order of -200 Me is required for the antisymmetric states of
(Q. It is also found that the spin hyperfine
interaction parameters play decisive role in hadron spectroscopy.Comment: 16 Pages, 3 Figures, Paper submitted in EPJ
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