B. M. Barry, J. Altoft, D. A. Thomas, and M. Wilson. Using Objects to Design and Build Radar ESM Systems. In Proceedings of OOPSLA '87. SIGPLAN, ACM, 1987.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....of data locality as well as enable actor relocation at execution time for scalable execution. Since the introduction of the Actor model by Hewitt [53] in late 60 s, a number of actorbased programming systems have been developed in software on single processor or multiprocessor platforms [88, 121, 56, 13, 16, 89, 11, 70] and implemented directly on silicon [12, 37] With the availability of low cost, high performance microprocessors, it becomes a challenge to implement actor based programming systems on stock hardware multicomputers in an efficient and scalable way [119, 117, 28, 75] It is challenging because ....

....its presence manifest only when a message is scheduled. 2. 3 Actor Based Languages The Actor model was first introduced by Carl Hewitt [53] refined by many others [55, 54, 30, 56] and defined in its current standard form by Agha [1] Particularly, since its introduction many actor based languages [121, 13, 88, 16, 11, 85, 135, 89, 70, 29] have been proposed for programming concurrent computation. Act1 [88] was an early actor language which was implemented in Lisp. It supported a number of abstractions which are still found in other contemporary actor based languages. For example, it used continuations to support bidirectional ....

B. M. Barry, J. Altoft, D. A. Thomas, and M. Wilson. Using Objects to Design and Build Radar ESM Systems. In Proceedings of OOPSLA '87. SIGPLAN, ACM, 1987.

.... for example, a software based open robot controller [6] a robot vision system [7] and a flexible manufacturing workcell [8] 9] Harmony is also being used as a platform for other research, as exemplified by psychology perception experiments [10] a multiprocessor implementation of Smalltalk [11] and research in human computer interfaces [12] 13] Harmony has reached a level of stability normally expected from a commercial product. There are about 30 organizations that are either evaluating or using Harmony. Arrangements have been made to distribute Harmony to potential users through ....

B.M. Barry, D.A. Thomas, J.R. Altoft and M. Wilson, "Using Objects to Design and Build Radar ESM Systems," Proc. Conference on Object Oriented Programming Systems, Languages and Applications, Orlando, FL, October 4-8 1987, SIGPLAN Notices, Vol. 22, No. 12, December 1987, pp. 192-201.

....purpose of the MARRS system is to take information from a digital signal processor, identify specific aircraft targets, and track those targets over time. While the details of the algorithm can not be described in this paper, the data processing is quite similar to that used by the AMEP 4 system [Bar89, BATW87]. In the AMEP system, a front end processor receives electromagnetic signals from a transmitter at fixed time intervals and translates these signals into pulse descriptors. These pulses are then assigned to track fragments based on sharing common parameters. The fragments are analyzed and merged ....

Brian M. Barry, John R. Altoft, D.A. Thomas, and Mike Wilson. Using objects to design and build radar ESM systems. In OOPSLA-87, pages 192--201, October 1987.

....reporting server, a TCP IP Ethernet network server, a simple terminal server, a multi window terminal server, a Multi Device Emulator server, a virtual terminal server, a clock server, a file system server, a file device server, and a robot arm server. Is Harmony Object Oriented Barry et al. [Barry 87] provide one analysis of Harmony as an object oriented system. Another view can be obtained by extending Wegner s language classifications [Wegner 87] object based = objects class based = objects classes object oriented = objects classes inheritance to complete systems. As detailed above, ....

....Harmony is not an object oriented system because Harmony does not have automatic inheritance, having no concept of super classes to inherit from. A form of inheritance can be implemented by having multiple tasks call the identical function to handle the identical message. However, Barry et al. [Barry 87] describe how Harmony provides a form of delegation [Lieberman 86] using message forwarding. Another example of delegation uses the Harmony connection mechanism. A server that is not prepared to handle a particular kind of connection can simply pass the OPEN CONNECTION message, which it received ....

B.M. Barry, J.R. Altoft, D.A. Thomas, and M. Wilson, "Using Objects to Design and Build Radar ESM Systems," Proceedings of the Conference on Object Oriented Programming Systems, Languages and Applications, Orlando, FL, October 4-8 1987, SIGPLAN Notices, Vol. 22, No. 12, December 1987, pp. 192-201.

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