منابع مشابه
Storing Light with Subradiant Correlations in Arrays of Atoms.
We show how strong light-mediated resonant dipole-dipole interactions between atoms can be utilized in a control and storage of light. The method is based on a high-fidelity preparation of a collective atomic excitation in a single correlated subradiant eigenmode in a lattice. We demonstrate how a simple phenomenological model captures the qualitative features of the dynamics and sharp transmis...
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The concatenable processes of a Petri net N can be characterized abstractly as the arrows of a symmetric monoidal category P[N ]. Yet, this is only a partial axiomatization, since P[N ] is built on a concrete, ad hoc chosen, category of symmetries. In this paper we give a fully equational description of the category of concatenable processes of N , thus yielding an axiomatic theory of the nonin...
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Tree-structured data are abundant today, ranging from Bioinformatics suffix-tree alignments, to multi-resolution video, to directory-file hierarchies, to XML. The storage techniques employed by systems that manage tree-structured data greatly affect their performance. Current approaches either map the tree data to an underlying relational database system, or use the abstraction provided by a ge...
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In natural gas markets, demand exhibits low price elasticity, while supply follows the market price; a phenomenon typically observed in markets for indispensable goods. A significant portion of gas consumption is due to heating and increasingly power generation, which sets a typical demand pattern: high in winter and summer ('high' seasons) and low in shoulder months ('low' seasons). Thus, the ...
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ژورنال
عنوان ژورنال: Journal of Computer and System Sciences
سال: 1977
ISSN: 0022-0000
DOI: 10.1016/s0022-0000(77)80010-x