Janus

Janus

(jay -nŭs) A small satellite of Saturn. The name Janus was originally given to a satellite of Saturn discovered in 1966 by the French astronomer Audouin Dollfus, but its existence was not confirmed. The name Janus has since been given to one of the two coorbital satellites discovered in 1980 at approximately the orbital distance given by Dollfus. The other satellite is Epimetheus. Four craters have been named on Janus: Castor, Idas, Lynceus, and Phoibe. See Table 2, backmatter.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Janus

[′jā·nəs]

(astronomy)

A satellite of Saturn which orbits at a mean distance of 151,000 kilometers (94,000 miles) and has an irregular shape with an average diameter of 190 kilometers (120 miles).

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

bifrons

bifrons

Having two fronts or faces looking in opposite directions, as a double herm.

McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

Janus

(1)

Distributed language with an ask/tell constraint system.

qdjanus is a Janus-to-Prolog compiler for Sicstus Prolog and jc is compiles to C.

["Janus: A Step Towards Distributed Constraint Programming", V. Saraswat <saraswat@parc.xerox.com> et al in Logic Programming: Proc 1990 North Am Conf, S. Debray et al eds, MIT Press 1990].

["Programming in Janus", Saraswat, Kahn, and Levy].

Janus

(2)

W.M. Waite, U Colorado. Intermediate language, claimed as an implementation of UNCOL. Used on CDC 6600.

["Experience with the Universal Intermediate Language Janus", B.K. Haddon et al, Soft Prac & Exp 8(5):601- 616 (Sep 1978)].

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