Biometric-based authentication systems are widely deployed for person identification. Recently, an improved scheme for flexible biometrics remote user authentication was proposed by Khan and Zhang. In this paper, we demonstrate that Khan-Zhang’s scheme is still vulnerable to the following two attacks: (1) It is insecure to parallel session attack in which an adversary without knowing a legal us...

Emerson R. Silva,* a ,b Wendel A. Alves, Valeria Castelletto, Mehedi Reza, Janne Ruokolainen, Rohanah Hussain and a Ian W. Hamley * b Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210580, Brazil Department of Chemistry, University of Reading, Whiteknights, Berkshire RG6 6AD, UK Dept of Applied Physics, Aalto University School of Science, P. O. Box 15100, FI00...

We give explicit formulas for the number of distinct elliptic curves over a finite field, up to isomorphism, in the families of Legendre, Jacobi, Hessian and Edwards curves.

A descent family of Dai–Liao conjugate gradient methods Saman Babaie-Kafaki & Reza Ghanbari a Department of Mathematics, Faculty of Mathematics, Statistics and Computer Sciences, Semnan University, P.O. Box 35195-363, Semnan, Iran b School of Mathematics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5746, Tehran, Iran c Faculty of Mathematical Sciences, Ferdowsi Universi...

Correspondence to: Professor Reza Razavi, Cardiac MR Research Group, Division of Imaging Sciences, 5th Floor Thomas Guy House, Guy’s Hospital, London, SE1 9RT, UK; reza. [email protected] . . . . . . . . . . . . . . . . . . . . . . . C ardiac magnetic resonance (MR) is increasingly replacing diagnostic cardiac catheterisation as a method of assessing cardiac anatomy, measuring blood flow, and qu...

1. introduction tazkeres are a kind of considerable sources of investigation in persian literature. in addition to their applications in well-known poet’s biographies, they can also be a resource for studying and representing the literary knowledge. sirajuddin ali khan is one of the indian outstanding scholars and poets of the in twelfth century whose work majma al-nafayesis a significant criti...