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(US), luster
a. a shiny metallic surface on some pottery and porcelain
b. (as modifier): lustre decoration
2. Mineralogy the way in which light is reflected from the surface of a mineral. It is one of the properties by which minerals are defined
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005


(A French acronym for Synchronous real-time Lucid). Real-time dataflow language for synchronous systems, especially automatic control and signal processing. A Lucid subset, plus timing operators and user-defined clocks.

Designed for automatic control applications. It is based on the idea that automatic control engineers use to analyse, and specify their systems in terms of functions over sequences (sampled signals). It thus seems both safe and cost effective to try to compile directly those descriptions into executable code. A lot of work has been done, so as to get efficient compilation, and also in formal verification. The language has been used in nuclear plant control, and will be used in aircraft control.

["Outline of a Real-Time Data-Flow Language", J.-L. Bergerand et al, Proc IEE-CS Real Time Systems Symp, San Diego, IEEE Dec 1985, pp. 33-42].

["LUSTRE: A Declarative Language for Programming Synchronous Systems", P. Caspi et al, Conf Rec 14th Ann ACM Symp on Princ Prog Langs, 1987].
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References in periodicals archive ?
A wide range of Cu to Ag ratio has been observed in the luster layers ranging from pure silver to pure copper luster decorations even in the same design.
i) Study of the relative importance of the various factors like (a) strength of colorant; (b) dispersion and stability (c) method and thickness of application (d) glaze composition and (e) fringe factors such as rate atmosphere and temperature to control the development of hard luster glazes
Acid Tests: Luster glaze effects produced from glazes Nos.
In both cinnabar and sulfur containing mixtures different reactions involving sulfur can enrich the reducing atmosphere with the formation of sulphure dioxide gas (SO2) directly in the luster layer aiding the final reduction and formation of the metal nanoparticles.