The increasing need to share information in dynamic environments has created a requirement for risk-aware access control systems. The standard RBAC model is designed to operate in a relatively stable, closed environment and does not include any support for risk. In this paper, we explore a number of ways in which the RBAC model can be extended to incorporate notions of risk. In particular, we d...

usually, in monitoring schemes the nominal value of the process parameter is assumed known. however, this assumption is violated owing to costly sampling and lack of data particularly in healthcare systems. on the other hand, applying a fixed control limit for the risk-adjusted bernoulli chart causes to a variable in-control average run length performance for patient populations with dissimilar...

In this paper modelling and analysis of the SRM torque characteristics including torque ripples are described. Optimal control strategy based on genetic algorithm (GA) to minimize torque ripple is proposed. The optimization criteria depend on choosing the exact current profile based on the optimal excitation parameters which govern the torque shape. The model and control are carried out on high...

We give an explicit PDE characterization for the solution of the problem of maximizing the utility of both terminal wealth and intertemporal consumption under model uncertainty. The underlying market model consists of a risky asset, whose volatility and long-term trend are driven by an external stochastic factor process. The robust utility functional is defined in terms of a HARA utility functi...

background: breast cancer incidence has increased rapidly inkuwait, but there haven’t been any studies investigating the recognized risk factors of breast cancer inkuwait. the aim of the study was to investigate breast cancer risk factors among women inkuwait.   methods: a case-control study was conducted in kuwait from may 2003 to march 2004 using a questionnaire including socio-demographic da...