منابع مشابه
Bunching for Regions and Locations
There are a number of applied lambda-calculi in which terms and types are annotated with parameters denoting either locations or locations in machine memory. Such calculi have been designed with safe memory-management operations in mind. It is difficult to construct directly denotational models for existing calculi of this kind. We approach the problem differently, by starting from a class of m...
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An exceedance region is the set of locations in a spatial domain where a process exceeds some threshold. Examples of exceedance regions include areas where ozone concentrations exceed safety standards, there is high risk for tornadoes or floods, or heavy-metal levels are dangerously high. Identifying these regions in a spatial or spatio-temporal setting is an important responsibility in environ...
متن کاملIncoherent and chaotic bunching effects
2014 The origin of the chaotic bunching effect is studied from a theoretical point of view. With this in mind, we propose an incohérent atomic source model consisting of atoms excited at stochastically independent times emitting without any interaction. By comparing the fields emitted by such a source and by a chaotic source, we propose the existence of an incoherent bunching effect, the only o...
متن کاملPhoton bunching in cathodoluminescence.
We have measured the second order correlation function [g^{(2)}(τ)] of the cathodoluminescence intensity resulting from the excitation by fast electrons of defect centers in wide band-gap semiconductor nanocrystals of diamond and hexagonal boron nitride. We show that the cathodoluminescence second order correlation function g^{(2)}(τ) of multiple defect centers is dominated by a large, nanoseco...
متن کاملNew mechanism for impurity-induced step bunching
– Codeposition of impurities during the growth of a vicinal surface leads to an impurity concentration gradient on the terraces, which induces corresponding gradients in the mobility and the chemical potential of the adatoms. Here it is shown that the two types of gradients have opposing effects on the stability of the surface: Step bunching can be caused by impurities which either lower the ad...
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ژورنال
عنوان ژورنال: Electronic Notes in Theoretical Computer Science
سال: 2006
ISSN: 1571-0661
DOI: 10.1016/j.entcs.2006.04.010