منابع مشابه
Flattening Traits
Traits are fine-grained components that can be used to compose classes, while avoiding many of the problems of multiple inheritance and mixin-based approaches. Since most implementations of traits have focused on dynamically-typed languages, the question naturally arises, how can one best introduce traits to statically-typed languages, like Java and C#? In this paper we argue that the flattenin...
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Nested data-parallelism can be efficiently implemented by mapping it to flat parallelism using Blelloch & Sabot’s flattening transformation. So far, the only dynamic data structure supported by flattening are vectors. We extend it with support for user-defined recursive types, which allow parallel tree structures to be defined. Thus, important parallel algorithms can be implemented more clearly...
متن کاملUniversal Flattening of Frobenius
For a variety X of positive characteristic and a non-negative integer e, we define its e-th F-blowup to be the universal flattening of the e-iterated Frobenius of X. Thus we have the sequence (a set labeled by non-negative integers) of blowups of X. Under some condition, the sequence stabilizes and leads to a nice (for instance, minimal or crepant) resolution. For tame quotient singularities, t...
متن کاملInvestigation of Neutron Contamination of Flattening Filter and Flattening Filter-Free 10-MV Photon Beams in Elekta InfinityTM Accelerator
Introduction: This study aimed to measure the neutron contamination of flattening filter (FF) and flattening filter-free (FFF) 10-MV photon beams delivered by the Elekta InfinityTM accelerator. Material and Methods: The photoneutron spectrum produced by the Linac head was evaluated using a Monte Carlo (MC) simulation. The geometry ...
متن کاملContinuous Flattening of Orthogonal Polyhedra
Can we flatten the surface of any 3-dimensional polyhedron P without cutting or stretching? Such continuous flat folding motions are known when P is convex, but the question remains open for nonconvex polyhedra. In this paper, we give a continuous flat folding motion when the polyhedron P is an orthogonal polyhedron, i.e., when every face is orthogonal to a coordinate axis (x, y, or z). More ge...
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ژورنال
عنوان ژورنال: Journal of Transportation Safety & Security
سال: 2014
ISSN: 1943-9962,1943-9970
DOI: 10.1080/19439962.2014.887597