Model input management: a case study

Article Abstract:

In many cases, model developers deliver models to model users who analyze alternatives by changing model input values. These model users need software capabilities and an interface that supports the process of data entry and editing as well as selection among input values to define a scenario for analysis. In addition, the interface must use context specific language. Such an interface was developed to united, for the model user, three inter-related models of a network of petroleum inventories. A database management system, transparent to the model user, was used to implement the capabilities accessed through the user interface. Thus, this case study illustrates requirements for model user software support and one way of meeting them. (Reprinted by permission of the publisher.)

Technical, User Interface, User interfaces (Computers), Decision Models, Data Base Administration

---

Computing the Input to a Linear Model

Article Abstract:

Most simulation problems involve calculating output from input, given configuration and parameters. Some problems, however, require taking a known output and determining the input. A good approach to this problem in a linear system is to use numerical integration which yields greater stability and accuracy than does numerical differentiation. Outputs and calculated inputs for an example of a linear model are presented.

Linear programming, Mathematical models, Numerical analysis, Models, Integral Equations, Computational Stability, Mathematical Programming

---

Annals of the History of Computing

Article Abstract:

IBM manufactured the first SAGE (Semi-Automatic Ground Environment) computer in 1958. Eventually, twenty-three SAGE centers went into operation, providing air defense support. By early 1984, the six remaining centers will be closed down. The history of the system is described in detail in the October 1983 issue of the Annals of the History of Computing.

Computer history, Computer Systems, Publications, Military, Systems, History of Computing, Air Force, Journals

Similar abstracts:

• Abstracts: Capacity management: pricing strategy, performance and the role of information. Optimal pricing for a target profit: case study on a veterinary diagnostic laboratory
• Abstracts: Managing the company turnaround process: a case study of the Australian heavy engineering industry. Innovation development in biopharmaceutical start-up firms: An Italian case study
• Abstracts: Total quality management in higher education: an application of quality improvement in a university. Applying QFD to internal service system design
• Abstracts: U.S. Standards Group seeks comment on committee drafts of ISO revisions. ISO 14000 revisions likely to be minor
• Abstracts: Simulation Model Simplification Techniques. Techniques for sensitivity analysis of simulation models: a case study of the CO2 greenhouse effect

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.