This paper is partly born of an increasing sense of uncertainty about how to do syntax. Time was, we linguists had at our disposal a generally accepted arsenal of analytic devices to deal with a familiar range of constructions and phenomena. However, as the phenomena under study began to proliferate, so did the analyses. The increasingly baroque GB architecture began to collapse under the weigh...

The 41 0-kilometer seismic discontinuity is generally considered to be caused by a phase transformation of the main constituent of the upper mantle, olivine, ot-(Mg,Fe)2SiO4, to P-(Mg,Fe)2SiO4. Recent data show that H20 dissolves in olivine and other nominally anhydrous mantle minerals and that the partitioning of H20 between olivine and P-(Mg,Fe)2Si04 is about 1:10. Such behavior strongly affe...

This paper exploits the multi-tiered structure of personal income taxation in Italy to investigate within-tier (horizontal) and between-tiers (vertical diagonal) fiscal externalities. Estimation an unrestricted tax reaction function on municipalities located at internal regional borders using o¤-border Wald-type grouping variables as well staggered schedule mayoral elections instruments for end...

The present work describes the vortex–vortex interactions observed during laboratory experiments, where a single regular water wave is allowed to travel over discontinuous rigid bed promoting generation of both near-bed and surface vortices. While vortices are generated by flow separation occurring at discontinuity, induced breaking in conjunction with breaking-induced jet. A ‘backward breaking...

Abstract The apparent monolithic behaviour of multi-leaf walls is compromised by the discontinuity planes that load transfer mechanisms generate for following reasons: i) difference between mechanical characteristics layers; ii) lack or weakness structural interaction core and external layers. goal this paper to evaluate through parametric analysis dimensional ratios reference confinement effec...

A comprehensive investigation was carried out to minimize the cost price of the rock fragmentation process including: drilling, blasting, secondary blasting and separating the large boulders (oversize rocks) while loading, until the optimized fragmentation, powder factor and ratio of burden (B) to blasthole diameter (?h) were achieved by doing several stages of drilling and blasting practically...

The regression discontinuity (RD) design is one of the most widely used nonexperimental methods for causal inference and program evaluation. Over last two decades, statistical econometric RD analysis have expanded matured, there now a large number methodological results identification, estimation, inference, validation. We offer curated review this literature organized around popular frameworks...

We define and study a calculus of discontinuity, a version of displacement calculus, which is a logic of segmented strings in exactly the same sense that the Lambek calculus is a logic of strings. Like the Lambek calculus, the displacement calculus is a sequence logic free of structural rules, and enjoys Cut-elimination and its corollaries: the subformula property, decidability, and the finite ...