Revisiting Liveness Properties in the Context of Secure Systems

Revisiting Safety and Liveness in the Context of Failures

Safety and liveness are two fundamental concepts for proving the correctness of concurrent programs. In the context of failures, however, we observe that some properties that are commonly believed to be safety properties are actually liveness properties. In this paper, we propose refinements of the concepts of safety and liveness that avoid this counterintuitive classification.

A Theory of Gray Security Policies

This paper generalizes traditional models of security policies, from specifications of whether programs are secure, to specifications of how secure programs are. This is a generalization from qualitative, black-and-white policies to quantitative, gray policies. Included are generalizations from traditional definitions of safety and liveness policies to definitions of gray-safety and gray-livene...

Revisiting the Relationship Between Systems of Innovation and Health Systems: A Response to Recent Commentaries

Revisiting Beta 2 Glycoprotein I, the Major Autoantigen in the Antiphospholipid Syndrome

Beta 2 glycoprotein I (β2GPI) is a single chain 50 kDa highly glycosylated glycoprotein at an approximate concentration of 4 μM in cells. The abundance of this protein in plasma and its high state of preservation indicate the important role of this protein in mammalian. In addition, β2GPI has a particular structure in the fifth domain, and is categorized as the major antigen recognized by autoa...

Verifying LTL Properties of Hybrid Systems with K-Liveness

The verification of liveness properties is an important challenge in the design of real-time and hybrid systems. In contrast to the verification of safety properties, for which there are several solutions available, there are really few tools that support liveness properties such as general LTL formulas for hybrid systems, even in the case of timed automata. In the context of finite-state model...