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Mechanical Engineering Commons

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1991

Mechanical Engineering Faculty Research and Publications

Articles 1 - 2 of 2

Full-Text Articles in Mechanical Engineering

Using Optimization And Simulation Techniques To Estimate Initial Weevil Populations, Kunter S. Akbay Jan 1991

Using Optimization And Simulation Techniques To Estimate Initial Weevil Populations, Kunter S. Akbay

Mechanical Engineering Faculty Research and Publications

In this paper, a mathematical programming and simulation method is used to estimate the number of weevils (Neochetina bruchi Hustache, and N. eichhorniae Warner) necessary to initialize the INSECT model which simulates the biological control of waterhyacinth by the weevils. The objective is to estimate the initial input values for the adult population so that the sum of the absolute differences between the observed and the simulated numbers of weevils is minimized. In general, the simulated values using the initial values obtained from the mathematical programming problem were within the 95% confidence intervals of the actual field observations. Also, in ...


A Computer Simulation Model Of Waterhyacinth And Weevil Interactions, Kunter S. Akbay, F. G. Howell, J. W. Wooten Jan 1991

A Computer Simulation Model Of Waterhyacinth And Weevil Interactions, Kunter S. Akbay, F. G. Howell, J. W. Wooten

Mechanical Engineering Faculty Research and Publications

A personal computer simulation model termed "INSECT" has been developed to evaluate biological control of waterhyacinth (Eichhornia crassipes (Mart.) Solms.) by two species of weevil (Neochetina eichhorniae Warner, and N. bruchi Hustache). The model results were compared with the data from three different locations. For each data set, the simulated plant biomass, adult and larva populations were plotted aqainst the 95% confidence intervals of the actual field observations. In many cases, the simulation results were within the 95% confidence intervals, and especially during the growing season, they indicated trends similar to those seen in the field data. However, there were ...