School choice policies have become a prominent feature of K-12 education in recent decades, reflecting the broader institutionalization market-based political ideology education. In this qualitative multiple case study, we draw on framing theory and interviews with 57 state-level policy actors to explore nature continued debate over school five U.S. states. We find patterns as beneficial, cente...

We specify an algorithm that builds up a hierarchy of referential discourse segments from local centering data. The spatial extension and nesting of these discourse segments constrain the reachability of potential antecedents of an anaphoric expression beyond the local level of adjacent center pairs. Thus, the centering model is scaled up to the level of the global referential structure of disc...

The purpose of the study reported in this paper is to investigate how local focusing structure, analysed in terms of Centering Theory (Grosz, Joshi & Weinstein, 1995), and global d iscourse structure, analysed in terms of discourse segments and discourse segment purposes (Grosz & Sidner, 1986), interact. Swedish dialogue was analysed according to Centering Theory and Grosz and Sidners (1986) di...

A case study on automotive lane centering control is examined in Hybrid Event-B (an extension of Event-B that includes provision for continuously varying behaviour as well as the usual discrete changes of state). This allows aspects beyond the reach of a discrete Event-B treatment to be more deeply investigated. Lane centering offers particular challenges concerning how the monitoring of contin...