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Liu, Mu-Shieung; Lee, Jui-Tine
doi: 10.1177/003754978805100602pmid: N/A
The main purpose of this system is to develop a simulation model as well as to perform an analysis of hospital resources including sick beds, ambulances, and ambulances of Police Rescue Centers called by 119, the emergency telephone number Here, the key items we are going to analyze include the number of sick beds and ambulances, the rate of use of sick beds andambulances, time of each ambulance on duty, and delay time (from calling ambulances to the arrival at hospitals) for an emergency call. With this system, we can assist the related personnel in making a complete program ming such that all resources can be employed both efficiently and sufficiently. By using SLAM II, we can obtain the minimum number of sick beds andambulances required to sustain the indispensable requirements under the existing and abnormal conditions. At the same time, we can observe the delay time for an emergency call and the rate of use of sick beds and ambulances within the limited availability of sick beds and ambulances.
doi: 10.1177/003754978805100603pmid: N/A
Earlier models are extended and combined to provide an analytic means of estimating the average number of inoperative machines in a two-echelon (bases and a depot), two-indenture (machines have components which may have modules) maintenance system with spares and repair. Separate expressions are developed for the no cannibalization and complete, instantaneous cannibaliza tion cases. The expressions are suitable for verification of aircraft maintenance system simulation models as well as for estima tion of system performance and the maximum benefit of cannibalization.
doi: 10.1177/003754978805100604pmid: N/A
A cognizant interface exhibits artificially intelligent knowledge and behavior toward the parties it is to serve in its interfacing role. These parties are the human user, on one hand, and the computer-based simulation software, on the other. The interface is therefore viewed as two-sided. To enable users who are neither computer specialists nor simulation experts to take advantage of sophisticated tools for system modeling and simulation, new approaches to interface design are necessary. They must encompass state-of-the-art technology (e.g. computer graphics and networks) as well as utilize techniques available in the areas of artificial intelligence and human-computer interaction. This paper has a three-fold purpose: to present results of a structured review of the simulation + ar tificial intelligence literature; to focus on criteria for engineering a modifiable interface; and to add to that interface the ability to adapt to the user. An illustrative prototype is outlined and a simulation-oriented framework of knowledge bases is presented.
doi: 10.1177/003754978805100605pmid: N/A
A generalized microcomputer based flight simulator has been developed, one part of this simulator is a numerical solution of the equations of flight. For accurate solution, a simple numerical scheme would demand a very small timestep: A modified scheme is therefore developed which allows a much larger timestep to be used by introducing certain scaling factors. These factors are themselves functions of the timestep and of the characteristic response time of the equations being solved. The modified numerical scheme is shown to be adequate when applied to simultaneous solutions of all the components of an aircraft motion. Within limits, the simulation is independent of the aircraft being simulated. Relevant performance and control parameters are entered before the commencement of solution.
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