Showing papers on "System integration published in 1975"

System Integration and Control in a Speech Understanding System

Abstract: : Two important problems in speech understanding are how to effectively integrate multiple sources of knowledge within the system and how to control the activities of the system to arrive at appropriate interpretations tor utterances. This paper first describes the roles played by acoustics, syntax, semantics, and discourse, and shows how a language definition is used to integrate them into a system in a way that allows the interactions to be easily visible. The second part of the paper describes an executive that uses information from these knowledge sources in its control strategy,

Maintenance of the computer sciences teleprocessing system

Abstract: This paper describes the maintenance and enhancement of the Computer Sciences Teleprocessing System (CSTS) and its component processors. CSTS is the system offered by the INFONET Division of Computer Sciences Corporation to provide nationwide conversational and batch teleprocessing service. In the first section, the organization of the project personnel and major activities of project departments are described. The second section describes the process by which functional enhancements and error corrections are implemented. The final section describes testing techniques and procedures used during implementation.The project staff is organized into implementation departments and service departments. Implementation departments develop new features of the system, corrections to errors, and improvements in system operation, especially in reduction of software overhead. Implementation departments are organized by system software functions such as operating system (device control, task management, and file management), language processors and data management systems, communications software, and applications. The service departments are system integration, performance analysis, product management and system test. The functions performed by these departments are described. Also described are the system evolution conferences and the periodic review of enhancements by a Change Advisory Board.During the development of a new version of the system, effective tracking of the status of changed modules is essential. The data base and process used to track new features, error corrections and changed component modules are described. The flow of implemented changes through system integration and system test is delineated, as is the development and verification of change documentation for users, administrators and operations personnel.The final section of the paper describes the design and documentation of test programs and the organization of test sets. Effective test operations are achieved by using self-checking tests as well as automated test operation and verification. Tests for compliance with functional specifications and for conformity to internal design are described.

Maintenance of the computer sciences teleprocessing system

Abstract: This paper describes the maintenance and enhancement of the Computer Sciences Teleprocessing System (CSTS) and its component processors. CSTS is the system offered by the INFONET Division of Computer Sciences Corporation to provide nationwide conversational and batch teleprocessing service. In the first section, the organization of the project personnel and major activities of project departments are described. The second section describes the process by which functional enhancements and error corrections are implemented. The final section describes testing techniques and procedures used during implementation.The project staff is organized into implementation departments and service departments. Implementation departments develop new features of the system, corrections to errors, and improvements in system operation, especially in reduction of software overhead. Implementation departments are organized by system software functions such as operating system (device control, task management, and file management), language processors and data management systems, communications software, and applications. The service departments are system integration, performance analysis, product management and system test. The functions performed by these departments are described. Also described are the system evolution conferences and the periodic review of enhancements by a Change Advisory Board.During the development of a new version of the system, effective tracking of the status of changed modules is essential. The data base and process used to track new features, error corrections and changed component modules are described. The flow of implemented changes through system integration and system test is delineated, as is the development and verification of change documentation for users, administrators and operations personnel.The final section of the paper describes the design and documentation of test programs and the organization of test sets. Effective test operations are achieved by using self-checking tests as well as automated test operation and verification. Tests for compliance with functional specifications and for conformity to internal design are described.

Simulation methods for nuclear production scheduling

Abstract: This paper reviews some of the recent developments and applications of simulation methods for use in nuclear production scheduling and fuel management. A more detailed summary of the state of the art is contained in an Engineering Foundation Conference paper (1). Emphasis in this paper is placed on the various formulations and approaches to the mid-range planning problem, whose objective is the determination of an optimal (least cost) system operating strategy over a multi-year planning horizon. The decomposition of the mid-range problem into power system simulation, reactor core simulation and nuclear fuel management optimization, and system integration models is discussed.

Oak Ridge System Integration Model (ORSIM) for optimization of utility generation planning

Abstract: An electric power generating system integration model has been developed which simulates the multi-year operation of a mixed power system consisting of fossil, nuclear, hydro, and pumped-storage units. This model has been given the name ORSIM, an acrosym derived from Oak Ridge Systems Integration Model. For any specified refueling schedule for nuclear units and forecast of future load, the model determines a plan of operation for the system which attempts to minimize the total discounted operating cost over a specified study period. The analysis considers the effects of forced outages, spinning reserve operating constraints, and schedules introduction and retirement of generating stations. An optimum operating plan, designed to minimize the discounted total production cost, is calculated, as are the cost of operating each station in the system and the discounted total production cost for the derived plan of operation. 13 references. (auth, modified)

Advanced Simulation in Undergraduate Pilot Training: Systems Integration.

Abstract: : Problems and solutions during integration of the ASUPT basic simulator with the computer image generation (CIG) visual system are described. Problems such as spin, stall, attitude control, and timing synchronization are addressed along with the methods and techniques employed to upgrade the basic simulator dynamics to meet the resolution and response fidelity required for smooth, responsive visual imagery. (Author)

Alternative Approaches to Integrated Airborne OMEGA/Inertial Navigation

Abstract: Integrated omega/inertial navigation systems appear attractive in airborne applications since the excellent short-term accuracy of an inertial navigator is well-complemented by the intermittent availability of bounded, moderately accurate OMEGA position fixes. There are a number of different approaches which can be taken to accomplish the desired system integration; three such approaches are considered. The first involves a straightforward output reset, the second is essentially a Kalman-based variant of rate-aiding and the third involves conventional optimal integration. These schemes are evaluated using models for various navigation system errors to yield predictions of system position and velocity error behavior. Additionally, the schemes are compared on the basis of operational factors such as ease of implementation and computer utilization.