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Voyager Interstellar Mission

The Voyager Interstellar Mission is exploring the interaction of the heliosphere with the local interstellar medium (LISM). Voyager 1 (V1) and Voyager 2 (V2) are both in the heliosheath, making the first in situ observations of the shocked solar wind beyond the termination shock (TS). The heliosheath extends to the heliopause; beyond the heliopause is the interstellar medium. The goal of the Vo...

A Bilingual VOYAGER System

This paper describes our initial efforts at porting the VOYAGER spoken language system to Japanese. In the process we have reorganized the structure of the system so that language dependent information is separated from the core engine as much as possible. For example, this information is encoded in tabular or rule-based form for the natural language understanding and generation components. The...

Asynchronous Rendez-vous in Distributed Logic Programming

In this paper the semantics of the communication mechanism of the distributed logic programming language DLP is studied. DLP combines logic programming with object oriented features and parallelism. For an abstract subset of DLP both an operational and denotational semantics is given. The language DLP supports active objects, method call by rendezvous and moreover (distributed) backtracking ove...

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Resurrecting Ada's Rendez-Vous in Java

Java is a programming language designed with concurrency in mind from its inception. However, the synchronization mechanism provided is a restricted version of Hoare’s Monitors, being too low level for most applications. In this paper we propose a high level synchronization mechanism for Java, based on Ada’s Rendez-Vous, adapting the notation and semantics to Java. The result is a nice and read...