Using SLAM and SDL to Assess Space Shuttle Experiments

Article Abstract:

The SLAM and SDL languages in simulation modeling can be used in the development and analysis and presentation of simulations. SLAM allows th use of both continuous and discreet events and networks combined in one model. Simulation Data Language (SDL), a database management system, facilitates storage, retrieval, and organization of simulation data in a database. The languages were applied to project design to determine the best method of transmitting experimental data from the space shuttle flight to earth. SLAM helped to represent the flow of experimental data packets as a network, use discreet events as models for computations and to interface with the SDL database, and use difference equations for the continuous data. SDL facilitated the comparison of data from all the scenarios and generated reports and plots. Photographs of the authors, graphs of the scenarios' results, diagrams of the network of data transmission, and statistical tables are presented.

Astronomy, Aerospace industry, Databases, Database, Networks, Space Craft, Scientific Research, Data Base Languages

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RSMM - A Network Language for Modeling Pollutants in River Systems

Article Abstract:

A new simulation language, RSMM, or River System Modeling Methodology, allows the construction of a river system model which may be used to evaluate water quality and pollutant levels. Using a network approach, the model contains nodes, representing dams, pollutant sources, etc., and branches, which can represent river segments. Combining both continuous and discrete factors, the models have four sections: external variables and system parameters, physical configurations, water quality parameters, and special features. RSMM models can also support detection of pollution violations and store outputs in a database. Models use a GASP V controller which may be interfaced to data management and graphics packages. Tables of symbols and acronymns, diagrams of river systems, inputs and outputs for an example model, and a graph of oxygen demand in an example model are presented.

Environmental protection, Water quality, Language, Resource Management

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Software Aids for Simulation

Article Abstract:

Because of increasingly inexpensive computer hardware, computer support can be used at all stages of simulation activity. Most software to date has supported program development activities primarily; software for other phases and simulation support software is needed. Interactive programs for model description, statistical software for run analysis, programs to aid presentation, and database management programs to integrate all support components are especially needed.

Software, Statistics (Data), End users, User Need, Interactive Systems, Statistics, Statistical Analysis

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