Our research concerns the dynamic processes underlying the rapid increase in the geographic distribution of Lyme disease, currently the most frequently reported vector-borne disease of humans in the United States [10, 1]. More specifically, we ask how spatially localized ecological interactions drive the Lyme disease epidemic at extended spatial and temporal scales. We have developed a parallel...

The research focuses on increasing production volume and decreasing costs at a hardness test block manufacturer. A discrete event simulation model is created to investigate potential system wide improvements. Using the results from the simulation a production work-cell is proposed that will allow a single worker to operate 7 machines at a rate that exceeds existing production rates. This result...

We develop a structural caching strategy to improve the performance of simulation for a wide class of models expressed in high-level formalisms. By imposing a Kronecker consistent partition of a model into submodels, we compute once, and cache for future use, the effect of each event on each submodel. This greatly reduces the cost of processing events, updating the current state, and collecting...

Computer simulation of a system described by differential equations requires that some element of the system be approximated by discrete quantities. There are two system aspects that can be made discrete; time and state. When time is discrete, the differential equation is approximated by a difference equation (i.e., a discrete time system), and the solution is calculated at fixed points in time...

The paper introduces a new tool for programmed discrete event simulation in Matlab. As Matlab’s language became one of the most frequently taught languages for computations in mathematics, statistics, and operations research, we need a simple to use and fast to learn tool for creation of simple and mediumscale simulation models. Moreover we need a tool where the code is clearly visible and wher...

The paper introduces OMNeT++, a C++-based discrete event simulation package primarily targeted at simulating computer networks and other distributed systems. OMNeT++ is fully programmable and modular, and it was designed from the ground up to support modeling very large networks built from reusable model components. Large emphasis was placed also on easy traceability and debuggability of simula...

Computer simulation is a method for studying complex systems that are not solvable with the use of standard analytical techniques. This contribution deals with the application of simulation program SIMUL8 to the analysis of production process in company Alteko, Inc. producing radial fans. The main purpose of the computer experiments is to identify the bottleneck processes and to suggest the man...

We describe a production shop which needed to undertake schedule analyses at the macro level of planning and explain the methods of using simulation to obtain valid, credible schedule analyses quickly. After discussion of the simulation model itself we present actual simulation results and conclusions. These successful simulation results help the production shop attain nimble adaptation to prod...