definition of RBAC exists today. This lack of a widely accepted model results in uncertainty and confusion about RBAC's utility and meaning. The standard proposed here seeks to resolve this situation by unifying ideas from a base of frequently referenced RBAC models, commercial products, and research

Abstract By now it is widely accepted that learning a task from scratch, i.e., without any prior knowledge, is a daunting undertaking. Humans, however, rarely attempt to learn from scratch. They extract initial biases as well as strategies how to approach a learning problem from instructions and

Abstract-- The rapid evolution of the environment in which information systems are required to operate originated a new kind of systems: they are networked and process-driven applications. There is no well-defined widely accepted approach to such system. A model-based methodology is proposed for the

Model-Driven Software Development (MDSD) is becoming a widely accepted approach for developing complex distributed applications. MDSD advocates the use of models as the key artifacts in all phases of development, from system specification and analysis, to design and implementation. Each

The most widely accepted approach to ‘risk ’ in financial markets focuses on the measurement of volatility in certain returns distributions. 1 The volatility of portfolio returns depends on the variances and covariances between the risk factors of the portfolio, and the sensitivities of individual

The Internet is undergoing substantial changes from a communication and browsing infrastructure to a medium for conducting business and marketing a myriad of services. The World Wide Web provides a uniform and widely-accepted application interface used by these services to reach multitudes

In contrast to wireline networks, not much is known about the flow of information over wireless networks. The main barrier is the complexity of the signal interaction in wireless channels in addition to the noise in the channel. A widely accepted model is the the additive Gaussian channel model

an attention has recently been focused on novel drug delivery of antifungal agents which is the most widely accepted approach.

Reticulate evolution—the umbrella term for processes like hybridization, horizontal gene transfer, and recombination—plays an important role in the history of life of many species. Although the occurrence of such events is widely accepted, approaches to calculate the extent to which reticulation

Abstract. Peer-to-peer systems represent a widely accepted approach to sharing massive data and services among large, diverse and varying sets of nodes in the network. In this paper, we introduce an overlay network which constructs the logical network topologies using a global ontology and peer