29 citations
4 papers
A dynamic resource allocation decision model for IT security
Lotfi Hajjem, Salah Benabdallah, Fouad Ben Abdelaziz
Today, with the continued growth in using information and communication technologies (ICT) for business purposes, business organizations become increasingly dependent on their info…
Highly Accurate Log Skew Normal Approximation to the Sum of Correlated Lognormals
Marwane Ben Hcine, Ridha Bouallegue
Several methods have been proposed to approximate the sum of correlated lognormal RVs. However the accuracy of each method relies highly on the region of the resulting distribution…
A Full Performance Analysis of Channel Estimation Methods for Time Varying OFDM Systems
Zaier Aida, Ridha Bouallegue
In this paper, we have evaluated various methods of time-frequency-selective fading channels estimation in OFDM system and some of them improved under time varying conditions. So,…
Managing Delegation in Access Control Models
Meriam Ben Ghorbel-Talbi, Frederic Cuppens, Nora Cuppens-Boulahia +1
In the field of access control, delegation is an important aspect that is considered as a part of the administration mechanism. Thus, a complete access control must provide a flexi…