Physical Sciences and Mathematics Commons^™

Study Of The Effectiveness Of Cost-Estimation Models And Complexity Metrics On Small Projects, Lein-Lein Chen

FIU Electronic Theses and Dissertations

Software cost overruns and time delay are common occurrences in the software development process. To reduce the occurrences of these problems, software cost estimation models and software complexity metrics measurements are two popular approaches used by the industry.

Most of the related studies are conducted for large scale software projects. In this thesis, we have investigated the effectiveness of three popular cost estimation models and program complexity metrics in so far as their applicability to small scale projects is concerned.

Experiments conducted on the programs collected from FIU and NCR corporation indicate that none of the cost estimation models precisely …

Pulsed Parabolic Equation Model Of Acoustic Transmission (Ppemat), Alicia Gonzalez Acebo

FIU Electronic Theses and Dissertations

Underwater sound is very important in the field of oceanography where it is used for remote sensing in much the same way that radar is used in atmospheric studies. One way to mathematically model sound propagation in the ocean is by using the parabolic-equation method, a technique that allows range dependent environmental parameters. More importantly, this method can model sound transmission where the source emits either a pure tone or a short pulse of sound. Based on the parabolic approximation method and using the split-step Fourier algorithm, a computer model for underwater sound propagation was designed and implemented. This computer …

Investigation Into Possible Causes Of Elevated Ozone Concentrations In Miami, Florida, Dale E. Aspy

FIU Electronic Theses and Dissertations

Ozone readings which exceeded the National Ambient Air Quality Standard of 120 ppbv were recorded in Miami, Florida during 1978 and 1980. Similar elevated concentrations of ozone extended across upper Florida and into the Southeastern portion of the United States. It is concluded that tropospheric transport of ozone into the Miami area occurs. This conclusion is supported by lead analyses of atmospheric samples taken in Miami and by isentropic trajectories. Six case studies are presented. In all cases transport of ozone into Florida appears to occur. In only four of the cases does this result in elevated ozone levels in …