In the past two decades, step-indexed logical relations and separation logics have both come to play a major role in semantics verification research. More recently, they been married together form of like VST, iCAP, Iris, which provide powerful tools for (among other things) building semantic models richly typed languages Rust. these logics, propositions are given using model, reasoning is refl...

Ad hoc networks are self-configuring networks of mobile nodes, connected by wireless links. If a destination node is beyond the transmission range of an origin node, then the nodes must cooperate to provide a multi-hop route. Any node can act as a sender, receiver or transit node. It is clear that it is in a node’s interest to be a sender or receiver, but it is less clear what the value is of f...

The dataset used in estimation and simulation was constructed from several sources. Table A1 provides an overview of the main variables used in the analysis. The sample of individuals comes from the National Educational Longitudinal Study (NELS). The NELS is a longitudinal survey of a representative sample of U.S. 8th graders in 1988. Interviews were conducted in 1988, 1990, 1992, 1994, and 200...